Use Kubernetes Client instead of Controller APIs from CLI (#2605)

Use the Kubernetes and Fission Client from CLI instead of Controller API.
This removes port-forwarding for the controller across Fission CLI mostly.

* Use configurable client in CLI
* Move resource namespace under cmd client
* use server to get fission version
* get archive with URL

Signed-off-by: Sanket Sudake <sanketsudake@gmail.com>
Co-authored-by: Sanket Sudake <sanketsudake@gmail.com>

cmd/fission-cli/app/app.go

@@ -14,10 +14,9 @@ limitations under the License.
 package app
 
 import (
+	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
 
-	"github.com/fission/fission/pkg/controller/client"
-	"github.com/fission/fission/pkg/controller/client/rest"
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
 	wrapper "github.com/fission/fission/pkg/fission-cli/cliwrapper/driver/cobra"
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/driver/cobra/helptemplate"
@@ -39,7 +38,6 @@ import (
 	"github.com/fission/fission/pkg/fission-cli/console"
 	"github.com/fission/fission/pkg/fission-cli/flag"
 	flagkey "github.com/fission/fission/pkg/fission-cli/flag/key"
-	"github.com/fission/fission/pkg/fission-cli/util"
 	_ "github.com/fission/fission/pkg/mqtrigger/messageQueue/kafka"
 )
 
@@ -61,19 +59,17 @@ func App() *cobra.Command {
 		PersistentPreRunE: wrapper.Wrapper(
 			func(input cli.Input) error {
 				console.Verbosity = input.Int(flagkey.Verbosity)
-
-				if input.IsSet(flagkey.ClientOnly) || input.IsSet(flagkey.PreCheckOnly) {
+				clientOptions := cmd.ClientOptions{
+					KubeContext: input.String(flagkey.KubeContext),
+				}
 				// TODO: use fake rest client for offline spec generation
-					cmd.SetClientset(client.MakeFakeClientset(nil))
-				} else {
-					serverUrl, err := util.GetServerURL(input)
+				// if input.IsSet(flagkey.ClientOnly) || input.IsSet(flagkey.PreCheckOnly) {
+				// }
+				client, err := cmd.NewClient(clientOptions)
 				if err != nil {
-						return err
+					return errors.Wrap(err, "failed to get fission client")
 				}
-					restClient := rest.NewRESTClient(serverUrl)
-					cmd.SetClientset(client.MakeClientset(restClient))
-				}
-
+				cmd.SetClientset(*client)
 				return nil
 			},
 		),

pkg/controller/api.go

@@ -261,7 +261,7 @@ func (api *API) GetHandler() http.Handler {
 	r.HandleFunc("/proxy/{dbType}", api.FunctionLogsApiPost).Methods("POST")
 	r.HandleFunc("/proxy/storage/v1/archive", api.StorageServiceProxy)
 	r.HandleFunc("/proxy/logs/{function}", api.FunctionPodLogs).Methods("POST")
-	r.HandleFunc("/proxy/workflows-apiserver/{path:.*}", api.WorkflowApiserverProxy)
+	r.HandleFunc("/proxy/workflows-apiserver/{path:.*}", api.WorkflowApiserverProxy) // Deprecated
 	r.HandleFunc("/proxy/svcname", api.GetSvcName).Queries("application", "").Methods("GET")
 
 	r.Handle("/v2/apidocs.json", openAPI()).Methods("GET")

pkg/controller/api_test.go

@@ -44,9 +44,9 @@ import (
 )
 
 var (
-	g struct {
-		cmd.CommandActioner
-	}
+	// g struct {
+	// 	cmd.CommandActioner
+	// }
 	testNS = metav1.NamespaceDefault
 )
 
@@ -105,41 +105,45 @@ func TestFunctionApi(t *testing.T) {
 			},
 		},
 	}
-	_, err := g.Client().V1().Function().Get(&metav1.ObjectMeta{
+
+	restClient := rest.NewRESTClient("http://localhost:8888")
+	dClient := client.MakeClientset(restClient)
+
+	_, err := dClient.V1().Function().Get(&metav1.ObjectMeta{
 		Name:      testFunc.ObjectMeta.Name,
 		Namespace: testNS,
 	})
 	assertNotFoundFailure(err, "function")
 
-	m, err := g.Client().V1().Function().Create(testFunc)
+	m, err := dClient.V1().Function().Create(testFunc)
 	panicIf(err)
 	defer func() {
-		err := g.Client().V1().Function().Delete(m)
+		err := dClient.V1().Function().Delete(m)
 		panicIf(err)
 	}()
 
-	_, err = g.Client().V1().Function().Create(testFunc)
+	_, err = dClient.V1().Function().Create(testFunc)
 	assertNameReuseFailure(err, "function")
 
 	testFunc.ObjectMeta.ResourceVersion = m.ResourceVersion
 	testFunc.Spec.Package.FunctionName = "yyy"
-	_, err = g.Client().V1().Function().Update(testFunc)
+	_, err = dClient.V1().Function().Update(testFunc)
 	panicIf(err)
 
 	testFunc.ObjectMeta.ResourceVersion = ""
 	testFunc.ObjectMeta.Name = "bar"
-	m2, err := g.Client().V1().Function().Create(testFunc)
+	m2, err := dClient.V1().Function().Create(testFunc)
 	panicIf(err)
 	defer func() {
-		err := g.Client().V1().Function().Delete(m2)
+		err := dClient.V1().Function().Delete(m2)
 		panicIf(err)
 	}()
 
-	funcs, err := g.Client().V1().Function().List(testNS)
+	funcs, err := dClient.V1().Function().List(testNS)
 	panicIf(err)
 	assert(len(funcs) == 2, fmt.Sprintf("created two functions, but found %v", len(funcs)))
 
-	funcs_url := g.Client().ServerURL() + "/v2/functions"
+	funcs_url := dClient.ServerURL() + "/v2/functions"
 	resp, err := http.Get(funcs_url)
 	panicIf(err)
 	defer resp.Body.Close()
@@ -169,23 +173,27 @@ func TestHTTPTriggerApi(t *testing.T) {
 			},
 		},
 	}
-	_, err := g.Client().V1().HTTPTrigger().Get(&metav1.ObjectMeta{
+
+	restClient := rest.NewRESTClient("http://localhost:8888")
+	dClient := client.MakeClientset(restClient)
+
+	_, err := dClient.V1().HTTPTrigger().Get(&metav1.ObjectMeta{
 		Name:      testTrigger.ObjectMeta.Name,
 		Namespace: testNS,
 	})
 	assertNotFoundFailure(err, "httptrigger")
 
-	m, err := g.Client().V1().HTTPTrigger().Create(testTrigger)
+	m, err := dClient.V1().HTTPTrigger().Create(testTrigger)
 	panicIf(err)
 	defer func() {
-		err := g.Client().V1().HTTPTrigger().Delete(m)
+		err := dClient.V1().HTTPTrigger().Delete(m)
 		panicIf(err)
 	}()
 
-	_, err = g.Client().V1().HTTPTrigger().Create(testTrigger)
+	_, err = dClient.V1().HTTPTrigger().Create(testTrigger)
 	assertNameReuseFailure(err, "httptrigger")
 
-	tr, err := g.Client().V1().HTTPTrigger().Get(m)
+	tr, err := dClient.V1().HTTPTrigger().Get(m)
 	panicIf(err)
 	assert(len(testTrigger.Spec.Methods) == len(tr.Spec.Methods) &&
 		testTrigger.Spec.RelativeURL == tr.Spec.RelativeURL &&
@@ -194,23 +202,23 @@ func TestHTTPTriggerApi(t *testing.T) {
 
 	testTrigger.ObjectMeta.ResourceVersion = m.ResourceVersion
 	testTrigger.Spec.RelativeURL = "/hi"
-	_, err = g.Client().V1().HTTPTrigger().Update(testTrigger)
+	_, err = dClient.V1().HTTPTrigger().Update(testTrigger)
 	panicIf(err)
 
 	testTrigger.ObjectMeta.ResourceVersion = ""
 	testTrigger.ObjectMeta.Name = "yyy"
-	_, err = g.Client().V1().HTTPTrigger().Create(testTrigger)
+	_, err = dClient.V1().HTTPTrigger().Create(testTrigger)
 	assert(err != nil, "duplicate trigger should not be allowed")
 
 	testTrigger.Spec.RelativeURL = "/hi2"
-	m2, err := g.Client().V1().HTTPTrigger().Create(testTrigger)
+	m2, err := dClient.V1().HTTPTrigger().Create(testTrigger)
 	panicIf(err)
 	defer func() {
-		err = g.Client().V1().HTTPTrigger().Delete(m2)
+		err = dClient.V1().HTTPTrigger().Delete(m2)
 		panicIf(err)
 	}()
 
-	ts, err := g.Client().V1().HTTPTrigger().List(testNS)
+	ts, err := dClient.V1().HTTPTrigger().List(testNS)
 	panicIf(err)
 	assert(len(ts) == 2, fmt.Sprintf("created two triggers, but found %v", len(ts)))
 }
@@ -237,7 +245,9 @@ func createFissionFnForMultipleTrigger() {
 		},
 	}
 
-	_, err := g.Client().V1().Function().Create(testFunc)
+	restClient := rest.NewRESTClient("http://localhost:8888")
+	dClient := client.MakeClientset(restClient)
+	_, err := dClient.V1().Function().Create(testFunc)
 	panicIf(err)
 	defer func() {
 		panicIf(err)
@@ -245,7 +255,7 @@ func createFissionFnForMultipleTrigger() {
 
 	testFunc.Name = "foo2"
 
-	_, err = g.Client().V1().Function().Create(testFunc)
+	_, err = dClient.V1().Function().Create(testFunc)
 	panicIf(err)
 	defer func() {
 		panicIf(err)
@@ -272,9 +282,11 @@ func TestHTTPTriggerCreateMultipleTrigger(t *testing.T) {
 		},
 	}
 
-	m, err := g.Client().V1().HTTPTrigger().Create(testTrigger)
+	restClient := rest.NewRESTClient("http://localhost:8888")
+	dClient := client.MakeClientset(restClient)
+	m, err := dClient.V1().HTTPTrigger().Create(testTrigger)
 	panicIf(err)
-	defer panicIf(g.Client().V1().HTTPTrigger().Delete(m))
+	defer panicIf(dClient.V1().HTTPTrigger().Delete(m))
 
 	prefix_2 := "url_another"
 	testTrigger2 := &fv1.HTTPTrigger{
@@ -293,7 +305,7 @@ func TestHTTPTriggerCreateMultipleTrigger(t *testing.T) {
 		},
 	}
 
-	m2, err := g.Client().V1().HTTPTrigger().Create(testTrigger2)
+	m2, err := dClient.V1().HTTPTrigger().Create(testTrigger2)
 
 	if err != nil {
 		t.Fatal()
@@ -301,7 +313,7 @@ func TestHTTPTriggerCreateMultipleTrigger(t *testing.T) {
 
 	defer func() {
 		if m2 != nil {
-			err := g.Client().V1().HTTPTrigger().Delete(m2)
+			err := dClient.V1().HTTPTrigger().Delete(m2)
 			if err != nil {
 				logger.Error("Error deleting http trigger", zap.String("name", m2.Name), zap.Error(err))
 			}
@@ -324,42 +336,46 @@ func TestEnvironmentApi(t *testing.T) {
 			Resources: v1.ResourceRequirements{},
 		},
 	}
-	_, err := g.Client().V1().Environment().Get(&metav1.ObjectMeta{
+
+	restClient := rest.NewRESTClient("http://localhost:8888")
+	dClient := client.MakeClientset(restClient)
+
+	_, err := dClient.V1().Environment().Get(&metav1.ObjectMeta{
 		Name:      testEnv.ObjectMeta.Name,
 		Namespace: testNS,
 	})
 	assertNotFoundFailure(err, "environment")
 
-	m, err := g.Client().V1().Environment().Create(testEnv)
+	m, err := dClient.V1().Environment().Create(testEnv)
 	panicIf(err)
 	defer func() {
-		err := g.Client().V1().Environment().Delete(m)
+		err := dClient.V1().Environment().Delete(m)
 		panicIf(err)
 	}()
 
-	_, err = g.Client().V1().Environment().Create(testEnv)
+	_, err = dClient.V1().Environment().Create(testEnv)
 	assertNameReuseFailure(err, "environment")
 
-	e, err := g.Client().V1().Environment().Get(m)
+	e, err := dClient.V1().Environment().Get(m)
 	panicIf(err)
 	assert(reflect.DeepEqual(testEnv.Spec, e.Spec), "env should match after reading")
 
 	testEnv.ObjectMeta.ResourceVersion = m.ResourceVersion
 	testEnv.Spec.Runtime.Image = "another-img"
-	_, err = g.Client().V1().Environment().Update(testEnv)
+	_, err = dClient.V1().Environment().Update(testEnv)
 	panicIf(err)
 
 	testEnv.ObjectMeta.ResourceVersion = ""
 	testEnv.ObjectMeta.Name = "bar"
 
-	m2, err := g.Client().V1().Environment().Create(testEnv)
+	m2, err := dClient.V1().Environment().Create(testEnv)
 	panicIf(err)
 	defer func() {
-		err := g.Client().V1().Environment().Delete(m2)
+		err := dClient.V1().Environment().Delete(m2)
 		panicIf(err)
 	}()
 
-	ts, err := g.Client().V1().Environment().List(testNS)
+	ts, err := dClient.V1().Environment().List(testNS)
 	panicIf(err)
 	assert(len(ts) == 2, fmt.Sprintf("created two envs, but found %v", len(ts)))
 }
@@ -379,23 +395,27 @@ func TestWatchApi(t *testing.T) {
 			},
 		},
 	}
-	_, err := g.Client().V1().KubeWatcher().Get(&metav1.ObjectMeta{
+
+	restClient := rest.NewRESTClient("http://localhost:8888")
+	dClient := client.MakeClientset(restClient)
+
+	_, err := dClient.V1().KubeWatcher().Get(&metav1.ObjectMeta{
 		Name:      testWatch.ObjectMeta.Name,
 		Namespace: testNS,
 	})
 	assertNotFoundFailure(err, "watch")
 
-	m, err := g.Client().V1().KubeWatcher().Create(testWatch)
+	m, err := dClient.V1().KubeWatcher().Create(testWatch)
 	panicIf(err)
 	defer func() {
-		err := g.Client().V1().KubeWatcher().Delete(m)
+		err := dClient.V1().KubeWatcher().Delete(m)
 		panicIf(err)
 	}()
 
-	_, err = g.Client().V1().KubeWatcher().Create(testWatch)
+	_, err = dClient.V1().KubeWatcher().Create(testWatch)
 	assertNameReuseFailure(err, "watch")
 
-	w, err := g.Client().V1().KubeWatcher().Get(m)
+	w, err := dClient.V1().KubeWatcher().Get(m)
 	panicIf(err)
 	assert(testWatch.Spec.Namespace == w.Spec.Namespace &&
 		testWatch.Spec.Type == w.Spec.Type &&
@@ -403,14 +423,14 @@ func TestWatchApi(t *testing.T) {
 		testWatch.Spec.FunctionReference.Name == w.Spec.FunctionReference.Name, "watch should match after reading")
 
 	testWatch.ObjectMeta.Name = "yyy"
-	m2, err := g.Client().V1().KubeWatcher().Create(testWatch)
+	m2, err := dClient.V1().KubeWatcher().Create(testWatch)
 	panicIf(err)
 	defer func() {
-		err := g.Client().V1().KubeWatcher().Delete(m2)
+		err := dClient.V1().KubeWatcher().Delete(m2)
 		panicIf(err)
 	}()
 
-	ws, err := g.Client().V1().KubeWatcher().List(testNS)
+	ws, err := dClient.V1().KubeWatcher().List(testNS)
 	panicIf(err)
 	assert(len(ws) == 2, fmt.Sprintf("created two watches, but found %v", len(ws)))
 }
@@ -429,20 +449,24 @@ func TestTimeTriggerApi(t *testing.T) {
 			},
 		},
 	}
-	_, err := g.Client().V1().TimeTrigger().Get(&metav1.ObjectMeta{Name: testTrigger.ObjectMeta.Name})
+
+	restClient := rest.NewRESTClient("http://localhost:8888")
+	dClient := client.MakeClientset(restClient)
+
+	_, err := dClient.V1().TimeTrigger().Get(&metav1.ObjectMeta{Name: testTrigger.ObjectMeta.Name})
 	assertNotFoundFailure(err, "trigger")
 
-	m, err := g.Client().V1().TimeTrigger().Create(testTrigger)
+	m, err := dClient.V1().TimeTrigger().Create(testTrigger)
 	panicIf(err)
 	defer func() {
-		err := g.Client().V1().TimeTrigger().Delete(m)
+		err := dClient.V1().TimeTrigger().Delete(m)
 		panicIf(err)
 	}()
 
-	_, err = g.Client().V1().TimeTrigger().Create(testTrigger)
+	_, err = dClient.V1().TimeTrigger().Create(testTrigger)
 	assertNameReuseFailure(err, "trigger")
 
-	tr, err := g.Client().V1().TimeTrigger().Get(m)
+	tr, err := dClient.V1().TimeTrigger().Get(m)
 	panicIf(err)
 	assert(testTrigger.Spec.Cron == tr.Spec.Cron &&
 		testTrigger.Spec.FunctionReference.Type == tr.Spec.FunctionReference.Type &&
@@ -450,16 +474,16 @@ func TestTimeTriggerApi(t *testing.T) {
 
 	testTrigger.ObjectMeta.ResourceVersion = m.ResourceVersion
 	testTrigger.Spec.Cron = "@hourly"
-	_, err = g.Client().V1().TimeTrigger().Update(testTrigger)
+	_, err = dClient.V1().TimeTrigger().Update(testTrigger)
 	panicIf(err)
 
 	testTrigger.ObjectMeta.ResourceVersion = ""
 	testTrigger.ObjectMeta.Name = "yyy"
 	testTrigger.Spec.Cron = "Not valid cron spec"
-	_, err = g.Client().V1().TimeTrigger().Create(testTrigger)
+	_, err = dClient.V1().TimeTrigger().Create(testTrigger)
 	assertCronSpecFails(err)
 
-	ts, err := g.Client().V1().TimeTrigger().List(testNS)
+	ts, err := dClient.V1().TimeTrigger().List(testNS)
 	panicIf(err)
 	assert(len(ts) == 1, fmt.Sprintf("created two time triggers, but found %v", len(ts)))
 }
@@ -497,9 +521,10 @@ func TestMain(m *testing.M) {
 
 	time.Sleep(5 * time.Second)
 
-	restClient := rest.NewRESTClient("http://localhost:8888")
+	client, err := cmd.NewClient(cmd.ClientOptions{})
+	panicIf(err)
 	// TODO: use fake rest client for offline spec generation
-	cmd.SetClientset(client.MakeClientset(restClient))
+	cmd.SetClientset(*client)
 
 	resp, err := http.Get("http://localhost:8888/")
 	panicIf(err)

pkg/controller/client/v1/canaryconfig.go

@@ -20,11 +20,10 @@ import (
 	"encoding/json"
 	"fmt"
 
-	"github.com/fission/fission/pkg/controller/client/rest"
-
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
 	fv1 "github.com/fission/fission/pkg/apis/core/v1"
+	"github.com/fission/fission/pkg/controller/client/rest"
 )
 
 type (

pkg/controller/client/v1/fake/fake_package.go

@@ -17,11 +17,10 @@ limitations under the License.
 package fake
 
 import (
-	v1 "github.com/fission/fission/pkg/controller/client/v1"
-
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
 	fv1 "github.com/fission/fission/pkg/apis/core/v1"
+	v1 "github.com/fission/fission/pkg/controller/client/v1"
 )
 
 type (

pkg/controller/client/v1/fake/fake_timetrigger.go

@@ -17,11 +17,10 @@ limitations under the License.
 package fake
 
 import (
-	v1 "github.com/fission/fission/pkg/controller/client/v1"
-
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
 	fv1 "github.com/fission/fission/pkg/apis/core/v1"
+	v1 "github.com/fission/fission/pkg/controller/client/v1"
 )
 
 type (

pkg/controller/client/v1/httptrigger.go

@@ -20,11 +20,10 @@ import (
 	"encoding/json"
 	"fmt"
 
-	"github.com/fission/fission/pkg/controller/client/rest"
-
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
 	fv1 "github.com/fission/fission/pkg/apis/core/v1"
+	"github.com/fission/fission/pkg/controller/client/rest"
 )
 
 type (

pkg/controller/client/v1/kuberneteswatchtrigger.go

@@ -20,11 +20,10 @@ import (
 	"encoding/json"
 	"fmt"
 
-	"github.com/fission/fission/pkg/controller/client/rest"
-
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
 	fv1 "github.com/fission/fission/pkg/apis/core/v1"
+	"github.com/fission/fission/pkg/controller/client/rest"
 	ferror "github.com/fission/fission/pkg/error"
 )
 

pkg/controller/client/v1/mqtrigger.go

@@ -20,11 +20,10 @@ import (
 	"encoding/json"
 	"fmt"
 
-	"github.com/fission/fission/pkg/controller/client/rest"
-
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
 	fv1 "github.com/fission/fission/pkg/apis/core/v1"
+	"github.com/fission/fission/pkg/controller/client/rest"
 )
 
 type (

pkg/controller/client/v1/package.go

@@ -20,11 +20,10 @@ import (
 	"encoding/json"
 	"fmt"
 
-	"github.com/fission/fission/pkg/controller/client/rest"
-
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
 	fv1 "github.com/fission/fission/pkg/apis/core/v1"
+	"github.com/fission/fission/pkg/controller/client/rest"
 )
 
 type (

pkg/controller/client/v1/timetrigger.go

@@ -20,11 +20,10 @@ import (
 	"encoding/json"
 	"fmt"
 
-	"github.com/fission/fission/pkg/controller/client/rest"
-
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
 	fv1 "github.com/fission/fission/pkg/apis/core/v1"
+	"github.com/fission/fission/pkg/controller/client/rest"
 )
 
 type (

pkg/controller/client/v1/v1.go

@@ -20,9 +20,8 @@ import (
 	"io"
 	"net/http"
 
-	ferror "github.com/fission/fission/pkg/error"
-
 	"github.com/fission/fission/pkg/controller/client/rest"
+	ferror "github.com/fission/fission/pkg/error"
 )
 
 type (

pkg/fission-cli/cmd/archive/command.go

@@ -32,7 +32,7 @@ func Commands() *cobra.Command {
 	}
 	wrapper.SetFlags(uploadCmd, flag.FlagSet{
 		Required: []flag.Flag{flag.ArchiveName},
-		Optional: []flag.Flag{flag.KubeContext},
+		Optional: []flag.Flag{},
 	})
 
 	listCmd := &cobra.Command{
@@ -41,7 +41,7 @@ func Commands() *cobra.Command {
 		RunE:  wrapper.Wrapper(List),
 	}
 	wrapper.SetFlags(listCmd, flag.FlagSet{
-		Optional: []flag.Flag{flag.KubeContext},
+		Optional: []flag.Flag{},
 	})
 
 	deleteCmd := &cobra.Command{
@@ -61,7 +61,7 @@ func Commands() *cobra.Command {
 	}
 	wrapper.SetFlags(geturlCmd, flag.FlagSet{
 		Required: []flag.Flag{flag.ArchiveID},
-		Optional: []flag.Flag{flag.KubeContext},
+		Optional: []flag.Flag{},
 	})
 
 	downloadCmd := &cobra.Command{
@@ -71,7 +71,7 @@ func Commands() *cobra.Command {
 	}
 	wrapper.SetFlags(downloadCmd, flag.FlagSet{
 		Required: []flag.Flag{flag.ArchiveID},
-		Optional: []flag.Flag{flag.KubeContext, flag.ArchiveOutput},
+		Optional: []flag.Flag{flag.ArchiveOutput},
 	})
 
 	command := &cobra.Command{

pkg/fission-cli/cmd/archive/delete.go

@@ -36,10 +36,9 @@ func Delete(input cli.Input) error {
 
 func (opts *DeleteSubCommand) do(input cli.Input) error {
 
-	kubeContext := input.String(flagkey.KubeContext)
 	archiveID := input.String(flagkey.ArchiveID)
 
-	storagesvcURL, err := util.GetStorageURL(input.Context(), kubeContext)
+	storagesvcURL, err := util.GetStorageURL(input.Context(), opts.Client())
 	if err != nil {
 		return err
 	}

pkg/fission-cli/cmd/archive/download.go

@@ -37,7 +37,6 @@ func Download(input cli.Input) error {
 
 func (opts *DownloadSubCommand) do(input cli.Input) error {
 
-	kubeContext := input.String(flagkey.KubeContext)
 	archiveID := input.String(flagkey.ArchiveID)
 	archiveOutput := input.String(flagkey.ArchiveOutput)
 
@@ -45,7 +44,7 @@ func (opts *DownloadSubCommand) do(input cli.Input) error {
 		archiveOutput = strings.TrimPrefix(archiveID, "/fission/fission-functions/")
 	}
 
-	storageAccessURL, err := util.GetStorageURL(input.Context(), kubeContext)
+	storageAccessURL, err := util.GetStorageURL(input.Context(), opts.Client())
 	if err != nil {
 		return err
 	}

pkg/fission-cli/cmd/archive/geturl.go

@@ -38,10 +38,9 @@ func GetURL(input cli.Input) error {
 
 func (opts *GetURLSubCommand) do(input cli.Input) error {
 
-	kubeContext := input.String(flagkey.KubeContext)
 	archiveID := input.String(flagkey.ArchiveID)
 
-	serverURL, err := util.GetStorageURL(input.Context(), kubeContext)
+	serverURL, err := util.GetStorageURL(input.Context(), opts.Client())
 	if err != nil {
 		return err
 	}
@@ -67,7 +66,7 @@ func (opts *GetURLSubCommand) do(input cli.Input) error {
 	storageType := resp.Header.Get("X-FISSION-STORAGETYPE")
 
 	if storageType == "local" {
-		storageSvc, err := opts.Client().V1().Misc().GetSvcURL("application=fission-storage")
+		storageSvc, err := util.GetSvcName(input.Context(), opts.Client().KubernetesClient, "fission-storage")
 		if err != nil {
 			return err
 		}

pkg/fission-cli/cmd/archive/list.go

@@ -21,7 +21,6 @@ import (
 
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
 	"github.com/fission/fission/pkg/fission-cli/cmd"
-	flagkey "github.com/fission/fission/pkg/fission-cli/flag/key"
 	"github.com/fission/fission/pkg/fission-cli/util"
 	storagesvcClient "github.com/fission/fission/pkg/storagesvc/client"
 )
@@ -36,9 +35,7 @@ func List(input cli.Input) error {
 
 func (opts *ListSubCommand) do(input cli.Input) error {
 
-	kubeContext := input.String(flagkey.KubeContext)
-
-	storageAccessURL, err := util.GetStorageURL(input.Context(), kubeContext)
+	storageAccessURL, err := util.GetStorageURL(input.Context(), opts.Client())
 	if err != nil {
 		return err
 	}

pkg/fission-cli/cmd/archive/upload.go

@@ -36,10 +36,9 @@ func Upload(input cli.Input) error {
 
 func (opts *UploadSubCommand) do(input cli.Input) error {
 
-	kubeContext := input.String(flagkey.KubeContext)
 	archiveName := input.String(flagkey.ArchiveName)
 
-	storagesvcURL, err := util.GetStorageURL(input.Context(), kubeContext)
+	storagesvcURL, err := util.GetStorageURL(input.Context(), opts.Client())
 	if err != nil {
 		return err
 	}

pkg/fission-cli/cmd/canaryconfig/create.go

@@ -54,7 +54,8 @@ func (opts *CreateSubCommand) complete(input cli.Input) (err error) {
 	ht := input.String(flagkey.CanaryHTTPTriggerName)
 	newFunc := input.String(flagkey.CanaryNewFunc)
 	oldFunc := input.String(flagkey.CanaryOldFunc)
-	_, fnNs, err := util.GetResourceNamespace(input, flagkey.NamespaceFunction)
+
+	_, fnNs, err := opts.GetResourceNamespace(input, flagkey.NamespaceFunction)
 	if err != nil {
 		return errors.Wrap(err, "error in creating canaryconfig")
 	}
@@ -69,10 +70,7 @@ func (opts *CreateSubCommand) complete(input cli.Input) (err error) {
 	}
 
 	// check that the trigger exists in the same namespace.
-	htTrigger, err := opts.Client().V1().HTTPTrigger().Get(&metav1.ObjectMeta{
-		Name:      ht,
-		Namespace: fnNs,
-	})
+	htTrigger, err := opts.Client().FissionClientSet.CoreV1().HTTPTriggers(fnNs).Get(input.Context(), ht, metav1.GetOptions{})
 	if err != nil {
 		return errors.Wrap(err, "error finding http trigger referenced in the canary config")
 	}
@@ -95,7 +93,7 @@ func (opts *CreateSubCommand) complete(input cli.Input) (err error) {
 
 	// check that the functions exist in the same namespace
 	fnList := []string{newFunc, oldFunc}
-	err = util.CheckFunctionExistence(opts.Client(), fnList, fnNs)
+	err = util.CheckFunctionExistence(input.Context(), opts.Client(), fnList, fnNs)
 	if err != nil {
 		return errors.Wrap(err, "error checking functions existence")
 	}
@@ -124,7 +122,7 @@ func (opts *CreateSubCommand) complete(input cli.Input) (err error) {
 }
 
 func (opts *CreateSubCommand) run(input cli.Input) error {
-	_, err := opts.Client().V1().CanaryConfig().Create(opts.canary)
+	_, err := opts.Client().FissionClientSet.CoreV1().CanaryConfigs(opts.canary.ObjectMeta.Namespace).Create(input.Context(), opts.canary, metav1.CreateOptions{})
 	if err != nil {
 		return errors.Wrap(err, "error creating canary config")
 	}

pkg/fission-cli/cmd/canaryconfig/delete.go

@@ -37,16 +37,12 @@ func Delete(input cli.Input) error {
 }
 
 func (opts *DeleteSubCommand) run(input cli.Input) (err error) {
-	_, namespace, err := util.GetResourceNamespace(input, flagkey.NamespaceCanary)
+	_, namespace, err := opts.GetResourceNamespace(input, flagkey.NamespaceCanary)
 	if err != nil {
 		return errors.Wrap(err, "error in deleting canaryConfig ")
 	}
-	m := &metav1.ObjectMeta{
-		Name:      input.String(flagkey.CanaryName),
-		Namespace: namespace,
-	}
 
-	err = opts.Client().V1().CanaryConfig().Delete(m)
+	err = opts.Client().FissionClientSet.CoreV1().CanaryConfigs(namespace).Delete(input.Context(), input.String(flagkey.CanaryName), metav1.DeleteOptions{})
 	if err != nil {
 		if input.Bool(flagkey.IgnoreNotFound) && util.IsNotFound(err) {
 			return nil
@@ -54,6 +50,6 @@ func (opts *DeleteSubCommand) run(input cli.Input) (err error) {
 		return errors.Wrap(err, "error deleting canary config")
 	}
 
-	fmt.Printf("canaryconfig '%v.%v' deleted\n", m.Name, m.Namespace)
+	fmt.Printf("canaryconfig '%v.%v' deleted\n", input.String(flagkey.CanaryName), namespace)
 	return nil
 }

pkg/fission-cli/cmd/canaryconfig/get.go

@@ -27,7 +27,6 @@ import (
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
 	"github.com/fission/fission/pkg/fission-cli/cmd"
 	flagkey "github.com/fission/fission/pkg/fission-cli/flag/key"
-	"github.com/fission/fission/pkg/fission-cli/util"
 )
 
 type GetSubCommand struct {
@@ -40,15 +39,12 @@ func Get(input cli.Input) error {
 
 func (opts *GetSubCommand) run(input cli.Input) (err error) {
 
-	_, namespace, err := util.GetResourceNamespace(input, flagkey.NamespaceCanary)
+	_, namespace, err := opts.GetResourceNamespace(input, flagkey.NamespaceCanary)
 	if err != nil {
 		return errors.Wrap(err, "error getting canary config")
 	}
 
-	canaryCfg, err := opts.Client().V1().CanaryConfig().Get(&metav1.ObjectMeta{
-		Name:      input.String(flagkey.CanaryName),
-		Namespace: namespace,
-	})
+	canaryCfg, err := opts.Client().FissionClientSet.CoreV1().CanaryConfigs(namespace).Get(input.Context(), input.String(flagkey.CanaryName), metav1.GetOptions{})
 	if err != nil {
 		return errors.Wrap(err, "error getting canary config")
 	}

pkg/fission-cli/cmd/canaryconfig/list.go

@@ -22,12 +22,11 @@ import (
 	"text/tabwriter"
 
 	"github.com/pkg/errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
-	v1 "github.com/fission/fission/pkg/apis/core/v1"
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
 	"github.com/fission/fission/pkg/fission-cli/cmd"
 	flagkey "github.com/fission/fission/pkg/fission-cli/flag/key"
-	"github.com/fission/fission/pkg/fission-cli/util"
 )
 
 type ListSubCommand struct {
@@ -48,7 +47,7 @@ func (opts *ListSubCommand) do(input cli.Input) error {
 }
 
 func (opts *ListSubCommand) complete(input cli.Input) (err error) {
-	_, opts.namespace, err = util.GetResourceNamespace(input, flagkey.NamespaceCanary)
+	_, opts.namespace, err = opts.GetResourceNamespace(input, flagkey.NamespaceCanary)
 	if err != nil {
 		return errors.Wrap(err, "error in listing canary config ")
 	}
@@ -57,19 +56,18 @@ func (opts *ListSubCommand) complete(input cli.Input) (err error) {
 
 func (opts *ListSubCommand) run(input cli.Input) (err error) {
 
-	var canaryCfgs []v1.CanaryConfig
 	if input.Bool(flagkey.AllNamespaces) {
-		canaryCfgs, err = opts.Client().V1().CanaryConfig().List("")
-	} else {
-		canaryCfgs, err = opts.Client().V1().CanaryConfig().List(opts.namespace)
+		opts.namespace = metav1.NamespaceAll
 	}
+	canaryCfgs, err := opts.Client().FissionClientSet.CoreV1().CanaryConfigs(opts.namespace).List(input.Context(), metav1.ListOptions{})
+
 	if err != nil {
 		return errors.Wrap(err, "error listing canary config")
 	}
 
 	w := tabwriter.NewWriter(os.Stdout, 0, 0, 1, ' ', 0)
 	fmt.Fprintf(w, "%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\n", "NAME", "TRIGGER", "FUNCTION-N", "FUNCTION-N-1", "WEIGHT-INCREMENT", "INTERVAL", "FAILURE-THRESHOLD", "FAILURE-TYPE", "STATUS")
-	for _, canaryCfg := range canaryCfgs {
+	for _, canaryCfg := range canaryCfgs.Items {
 		fmt.Fprintf(w, "%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\n",
 			canaryCfg.ObjectMeta.Name, canaryCfg.Spec.Trigger, canaryCfg.Spec.NewFunction, canaryCfg.Spec.OldFunction, canaryCfg.Spec.WeightIncrement, canaryCfg.Spec.WeightIncrementDuration,
 			canaryCfg.Spec.FailureThreshold, canaryCfg.Spec.FailureType, canaryCfg.Status.Status)

pkg/fission-cli/cmd/canaryconfig/update.go

@@ -27,7 +27,6 @@ import (
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
 	"github.com/fission/fission/pkg/fission-cli/cmd"
 	flagkey "github.com/fission/fission/pkg/fission-cli/flag/key"
-	"github.com/fission/fission/pkg/fission-cli/util"
 )
 
 type UpdateSubCommand struct {
@@ -49,8 +48,7 @@ func (opts *UpdateSubCommand) do(input cli.Input) error {
 
 func (opts *UpdateSubCommand) complete(input cli.Input) (err error) {
 	// get the current config
-	name := input.String(flagkey.CanaryName)
-	_, ns, err := util.GetResourceNamespace(input, flagkey.NamespaceCanary)
+	_, ns, err := opts.GetResourceNamespace(input, flagkey.NamespaceCanary)
 	if err != nil {
 		return errors.Wrap(err, "error updating canary config")
 	}
@@ -64,10 +62,7 @@ func (opts *UpdateSubCommand) complete(input cli.Input) (err error) {
 		return errors.Wrap(err, "error parsing time duration")
 	}
 
-	canaryCfg, err := opts.Client().V1().CanaryConfig().Get(&metav1.ObjectMeta{
-		Name:      name,
-		Namespace: ns,
-	})
+	canaryCfg, err := opts.Client().FissionClientSet.CoreV1().CanaryConfigs(ns).Get(input.Context(), input.String(flagkey.CanaryName), metav1.GetOptions{})
 	if err != nil {
 		return errors.Wrap(err, "error getting canary config")
 	}
@@ -96,7 +91,7 @@ func (opts *UpdateSubCommand) complete(input cli.Input) (err error) {
 }
 
 func (opts *UpdateSubCommand) run(input cli.Input) error {
-	_, err := opts.Client().V1().CanaryConfig().Update(opts.canary)
+	_, err := opts.Client().FissionClientSet.CoreV1().CanaryConfigs(opts.canary.ObjectMeta.Namespace).Update(input.Context(), opts.canary, metav1.UpdateOptions{})
 	if err != nil {
 		return errors.Wrap(err, "error updating canary config")
 	}

pkg/fission-cli/cmd/check/check.go

@@ -30,8 +30,6 @@ func Check(input cli.Input) error {
 
 func (opts *CheckSubCommand) do(input cli.Input) error {
 
-	kubeContext := input.String(flagkey.KubeContext)
-
 	checks := []healthcheck.CategoryID{}
 
 	if input.IsSet(flagkey.PreCheckOnly) {
@@ -40,11 +38,8 @@ func (opts *CheckSubCommand) do(input cli.Input) error {
 		checks = append(checks, healthcheck.FissionServices, healthcheck.FissionVersion)
 	}
 
-	hc := healthcheck.NewHealthChecker(checks, &healthcheck.Options{
-		KubeContext:   kubeContext,
-		FissionClient: opts.Client(),
-	})
+	hc := healthcheck.NewHealthChecker(opts.Client(), checks)
 
-	healthcheck.RunChecks(input.Context(), hc)
+	healthcheck.RunChecks(input.Context(), input, opts.Client(), hc)
 	return nil
 }

pkg/fission-cli/cmd/client.go

@@ -0,0 +1,134 @@
+/*
+Copyright 2022 The Fission Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package cmd
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"os/user"
+	"path/filepath"
+
+	"k8s.io/client-go/kubernetes"
+	"k8s.io/client-go/rest"
+	"k8s.io/client-go/tools/clientcmd"
+
+	"github.com/fission/fission/pkg/fission-cli/console"
+	"github.com/fission/fission/pkg/generated/clientset/versioned"
+)
+
+type (
+	ClientOptions struct {
+		KubeContext string
+	}
+	Client struct {
+		Options          ClientOptions
+		ClientConfig     clientcmd.ClientConfig
+		RestConfig       *rest.Config
+		FissionClientSet versioned.Interface
+		KubernetesClient kubernetes.Interface
+		Namespace        string
+	}
+)
+
+func (c *Client) SetFissionClientset(fissionClientSet versioned.Interface) {
+	c.FissionClientSet = fissionClientSet
+}
+
+func (c *Client) SetKubernetesClient(kubernetesClient kubernetes.Interface) {
+	c.KubernetesClient = kubernetesClient
+}
+
+func getLoadingRules() (loadingRules *clientcmd.ClientConfigLoadingRules, err error) {
+	loadingRules = clientcmd.NewDefaultClientConfigLoadingRules()
+
+	kubeConfigPath := os.Getenv("KUBECONFIG")
+	if len(kubeConfigPath) == 0 {
+		var homeDir string
+		usr, err := user.Current()
+		if err != nil {
+			// In case that user.Current() may be unable to work under some circumstances and return errors like
+			// "user: Current not implemented on darwin/amd64" due to cross-compilation problem. (https://github.com/golang/go/issues/6376).
+			// Instead of doing fatal here, we fallback to get home directory from the environment $HOME.
+			console.Warn(fmt.Sprintf("Could not get the current user's directory (%s), fallback to get it from env $HOME", err))
+			homeDir = os.Getenv("HOME")
+		} else {
+			homeDir = usr.HomeDir
+		}
+		kubeConfigPath = filepath.Join(homeDir, ".kube", "config")
+
+		if _, err := os.Stat(kubeConfigPath); os.IsNotExist(err) {
+			return nil, errors.New("couldn't find kubeconfig file. " +
+				"Set the KUBECONFIG environment variable to your kubeconfig's path.")
+		}
+		loadingRules.ExplicitPath = kubeConfigPath
+		console.Verbose(2, "Using kubeconfig from %q", kubeConfigPath)
+	} else {
+		console.Verbose(2, "Using kubeconfig from environment %q", kubeConfigPath)
+	}
+	return loadingRules, nil
+}
+
+func GetClientConfig(kubeContext string) (clientcmd.ClientConfig, error) {
+	loadingRules, err := getLoadingRules()
+	if err != nil {
+		return nil, err
+	}
+	overrides := &clientcmd.ConfigOverrides{}
+	if len(kubeContext) > 0 {
+		console.Verbose(2, "Using kubeconfig context %q", kubeContext)
+		overrides.CurrentContext = kubeContext
+	}
+	return clientcmd.NewNonInteractiveDeferredLoadingClientConfig(loadingRules, overrides), nil
+}
+
+func NewClient(opts ClientOptions) (*Client, error) {
+	client := &Client{
+		Options: opts,
+	}
+	cmdConfig, err := GetClientConfig(opts.KubeContext)
+	if err != nil {
+		return nil, err
+	}
+	client.ClientConfig = cmdConfig
+
+	namespace, _, err := cmdConfig.Namespace()
+	if err != nil {
+		return nil, err
+	}
+	client.Namespace = namespace
+	console.Verbose(2, "Kubeconfig default namespace %q", namespace)
+
+	restConfig, err := cmdConfig.ClientConfig()
+	if err != nil {
+		return nil, err
+	}
+	client.RestConfig = restConfig
+	clientset, err := kubernetes.NewForConfig(restConfig)
+	if err != nil {
+		return nil, err
+	}
+	client.KubernetesClient = clientset
+
+	fissionClientset, err := versioned.NewForConfig(restConfig)
+	if err != nil {
+		return nil, err
+	}
+	client.FissionClientSet = fissionClientset
+
+	return client, nil
+}

pkg/fission-cli/cmd/cmd.go

@@ -17,10 +17,12 @@ limitations under the License.
 package cmd
 
 import (
+	"os"
 	"sync"
 
-	"github.com/fission/fission/pkg/controller/client"
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
+	"github.com/fission/fission/pkg/fission-cli/console"
+	flagkey "github.com/fission/fission/pkg/fission-cli/flag/key"
 )
 
 type (
@@ -30,15 +32,39 @@ type (
 
 var (
 	once          = sync.Once{}
-	defaultClientset client.Interface
+	defaultClient Client
 )
 
-func SetClientset(clientset client.Interface) {
+func SetClientset(client Client) {
 	once.Do(func() {
-		defaultClientset = clientset
+		defaultClient = client
 	})
 }
 
-func (c *CommandActioner) Client() client.Interface {
-	return defaultClientset
+func (c *CommandActioner) Client() Client {
+	return defaultClient
+}
+
+func (c *CommandActioner) GetResourceNamespace(input cli.Input, deprecatedFlag string) (namespace, currentNS string, err error) {
+	namespace = input.String(deprecatedFlag)
+	currentNS = namespace
+
+	if input.String(flagkey.Namespace) != "" {
+		namespace = input.String(flagkey.Namespace)
+		currentNS = namespace
+		console.Verbose(2, "Namespace for resource %s ", currentNS)
+		return namespace, currentNS, err
+	}
+
+	if namespace == "" {
+		if os.Getenv("FISSION_DEFAULT_NAMESPACE") != "" {
+			currentNS = os.Getenv("FISSION_DEFAULT_NAMESPACE")
+		} else {
+			currentNS = c.Client().Namespace
+			return namespace, currentNS, err
+		}
+	}
+
+	console.Verbose(2, "Namespace for resource %s ", currentNS)
+	return namespace, currentNS, nil
 }

pkg/fission-cli/cmd/environment/create.go

@@ -66,16 +66,16 @@ func (opts *CreateSubCommand) complete(input cli.Input) error {
 func (opts *CreateSubCommand) run(input cli.Input) (err error) {
 	m := opts.env.ObjectMeta
 
-	envList, err := opts.Client().V1().Environment().List(m.Namespace)
+	envList, err := opts.Client().FissionClientSet.CoreV1().Environments(m.Namespace).List(input.Context(), metav1.ListOptions{})
 	if err != nil {
 		return err
-	} else if len(envList) > 0 {
+	} else if len(envList.Items) > 0 {
 		console.Verbose(2, "%d environment(s) are present in the %s namespace.  "+
 			"These environments are not isolated from each other; use separate namespaces if you need isolation.",
-			len(envList), m.Namespace)
+			len(envList.Items), m.Namespace)
 	}
 
-	userDefinedNS, currentNS, err := util.GetResourceNamespace(input, flagkey.NamespaceEnvironment)
+	userDefinedNS, currentNS, err := opts.GetResourceNamespace(input, flagkey.NamespaceEnvironment)
 	if err != nil {
 		return fv1.AggregateValidationErrors("Environment", err)
 	}
@@ -108,14 +108,10 @@ func (opts *CreateSubCommand) run(input cli.Input) (err error) {
 	}
 
 	opts.env.ObjectMeta.Namespace = currentNS
-	err = opts.env.Validate()
-	if err != nil {
-		return fv1.AggregateValidationErrors("Environment", err)
-	}
 
-	_, err = opts.Client().V1().Environment().Create(opts.env)
+	_, err = opts.Client().FissionClientSet.CoreV1().Environments(opts.env.Namespace).Create(input.Context(), opts.env, metav1.CreateOptions{})
 	if err != nil {
-		return errors.Wrap(err, "error creating environment")
+		return errors.Wrap(err, "error creating resource")
 	}
 
 	fmt.Printf("environment '%v' created\n", m.Name)

pkg/fission-cli/cmd/environment/delete.go

@@ -20,13 +20,13 @@ import (
 	"fmt"
 
 	"github.com/pkg/errors"
+	kerrors "k8s.io/apimachinery/pkg/api/errors"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
 	"github.com/fission/fission/pkg/fission-cli/cmd"
 	"github.com/fission/fission/pkg/fission-cli/console"
 	flagkey "github.com/fission/fission/pkg/fission-cli/flag/key"
-	"github.com/fission/fission/pkg/fission-cli/util"
 )
 
 type DeleteSubCommand struct {
@@ -39,40 +39,36 @@ func Delete(input cli.Input) error {
 
 func (opts *DeleteSubCommand) do(input cli.Input) (err error) {
 
-	_, currentContextNS, err := util.GetResourceNamespace(input, flagkey.NamespaceEnvironment)
+	_, currentContextNS, err := opts.GetResourceNamespace(input, flagkey.NamespaceEnvironment)
 	if err != nil {
 		return errors.Wrap(err, "error creating environment")
 	}
 	console.Verbose(2, "Searching for resource in  %s Namespace", currentContextNS)
-
-	m := &metav1.ObjectMeta{
-		Name:      input.String(flagkey.EnvName),
-		Namespace: currentContextNS,
-	}
+	envName := input.String(flagkey.EnvName)
 
 	if !input.Bool(flagkey.EnvForce) {
-		fns, err := opts.Client().V1().Function().List(metav1.NamespaceAll)
+		fns, err := opts.Client().FissionClientSet.CoreV1().Functions(metav1.NamespaceAll).List(input.Context(), metav1.ListOptions{})
 		if err != nil {
 			return errors.Wrap(err, "Error getting functions wrt environment.")
 		}
 
-		for _, fn := range fns {
-			if fn.Spec.Environment.Name == m.Name &&
-				fn.Spec.Environment.Namespace == m.Namespace {
+		for _, fn := range fns.Items {
+			if fn.Spec.Environment.Name == envName &&
+				fn.Spec.Environment.Namespace == currentContextNS {
 				return errors.New("Environment is used by at least one function.")
 			}
 		}
 	}
 
-	err = opts.Client().V1().Environment().Delete(m)
+	err = opts.Client().FissionClientSet.CoreV1().Environments(currentContextNS).Delete(input.Context(), envName, metav1.DeleteOptions{})
 	if err != nil {
-		if input.Bool(flagkey.IgnoreNotFound) && util.IsNotFound(err) {
+		if input.Bool(flagkey.IgnoreNotFound) && kerrors.IsNotFound(err) {
 			return nil
 		}
 		return errors.Wrap(err, "error deleting environment")
 	}
 
-	fmt.Printf("environment '%v' deleted\n", m.Name)
+	fmt.Printf("environment '%s' deleted\n", envName)
 
 	return nil
 }

pkg/fission-cli/cmd/environment/get.go

@@ -27,7 +27,6 @@ import (
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
 	"github.com/fission/fission/pkg/fission-cli/cmd"
 	flagkey "github.com/fission/fission/pkg/fission-cli/flag/key"
-	"github.com/fission/fission/pkg/fission-cli/util"
 )
 
 type GetSubCommand struct {
@@ -40,17 +39,12 @@ func Get(input cli.Input) error {
 
 func (opts *GetSubCommand) do(input cli.Input) (err error) {
 
-	_, currentNS, err := util.GetResourceNamespace(input, flagkey.NamespaceEnvironment)
+	_, currentNS, err := opts.GetResourceNamespace(input, flagkey.NamespaceEnvironment)
 	if err != nil {
 		return errors.Wrap(err, "error creating environment")
 	}
 
-	m := &metav1.ObjectMeta{
-		Name:      input.String(flagkey.EnvName),
-		Namespace: currentNS,
-	}
-
-	env, err := opts.Client().V1().Environment().Get(m)
+	env, err := opts.Client().FissionClientSet.CoreV1().Environments(currentNS).Get(input.Context(), input.String(flagkey.EnvName), metav1.GetOptions{})
 	if err != nil {
 		return errors.Wrap(err, "error getting environment")
 	}

pkg/fission-cli/cmd/environment/list.go

@@ -22,12 +22,11 @@ import (
 	"text/tabwriter"
 
 	"github.com/pkg/errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
-	v1 "github.com/fission/fission/pkg/apis/core/v1"
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
 	"github.com/fission/fission/pkg/fission-cli/cmd"
 	flagkey "github.com/fission/fission/pkg/fission-cli/flag/key"
-	"github.com/fission/fission/pkg/fission-cli/util"
 )
 
 type ListSubCommand struct {
@@ -40,22 +39,22 @@ func List(input cli.Input) error {
 
 func (opts *ListSubCommand) do(input cli.Input) (err error) {
 
-	_, currentNS, err := util.GetResourceNamespace(input, flagkey.NamespaceEnvironment)
+	_, currentNS, err := opts.GetResourceNamespace(input, flagkey.NamespaceEnvironment)
 	if err != nil {
 		return errors.Wrap(err, "error creating environment")
 	}
 
-	var envs []v1.Environment
 	if input.Bool(flagkey.AllNamespaces) {
-		envs, err = opts.Client().V1().Environment().List("")
-	} else {
-		envs, err = opts.Client().V1().Environment().List(currentNS)
+		currentNS = metav1.NamespaceAll
 	}
 
+	response, err := opts.Client().FissionClientSet.CoreV1().Environments(currentNS).List(input.Context(), metav1.ListOptions{})
 	if err != nil {
 		return errors.Wrap(err, "error listing environments")
 	}
 
+	envs := response.Items
+
 	w := tabwriter.NewWriter(os.Stdout, 0, 0, 1, ' ', 0)
 	fmt.Fprintf(w, "%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\n", "NAME", "IMAGE", "BUILDER_IMAGE", "POOLSIZE", "MINCPU", "MAXCPU", "MINMEMORY", "MAXMEMORY", "EXTNET", "GRACETIME", "NAMESPACE")
 	for _, env := range envs {

pkg/fission-cli/cmd/environment/pods.go

@@ -23,12 +23,12 @@ import (
 
 	"github.com/pkg/errors"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/labels"
 
 	v1 "github.com/fission/fission/pkg/apis/core/v1"
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
 	"github.com/fission/fission/pkg/fission-cli/cmd"
 	flagkey "github.com/fission/fission/pkg/fission-cli/flag/key"
-	"github.com/fission/fission/pkg/fission-cli/util"
 	"github.com/fission/fission/pkg/utils"
 )
 
@@ -42,37 +42,35 @@ func ListPods(input cli.Input) error {
 
 func (opts *ListPodsSubCommand) do(input cli.Input) (err error) {
 
-	_, currentNS, err := util.GetResourceNamespace(input, flagkey.NamespaceEnvironment)
+	_, currentNS, err := opts.GetResourceNamespace(input, flagkey.NamespaceEnvironment)
 	if err != nil {
 		return errors.Wrap(err, "error creating environment")
 	}
 
-	// validate environment
-	_, err = opts.Client().V1().Environment().Get(
-		&metav1.ObjectMeta{
-			Name:      input.String(flagkey.EnvName),
-			Namespace: currentNS,
-		})
+	_, err = opts.Client().FissionClientSet.CoreV1().Environments(currentNS).Get(input.Context(), input.String(flagkey.EnvName), metav1.GetOptions{})
 	if err != nil {
 		return errors.Wrap(err, "error getting environment")
 	}
 
-	m := &metav1.ObjectMeta{
-		Name: input.String(flagkey.EnvName),
-		Labels: map[string]string{
-			v1.ENVIRONMENT_NAMESPACE: currentNS,
-			v1.EXECUTOR_TYPE:         input.String(flagkey.EnvExecutorType),
-		},
+	// label selector
+	selector := map[string]string{
+		v1.ENVIRONMENT_NAME: input.String(flagkey.EnvName),
+	}
+	selector[v1.ENVIRONMENT_NAMESPACE] = currentNS
+	if len(input.String(flagkey.EnvExecutorType)) > 0 {
+		selector[v1.EXECUTOR_TYPE] = input.String(flagkey.EnvExecutorType)
 	}
 
-	pods, err := opts.Client().V1().Environment().ListPods(m)
+	podsList, err := opts.Client().KubernetesClient.CoreV1().Pods(metav1.NamespaceAll).List(input.Context(), metav1.ListOptions{
+		LabelSelector: labels.Set(selector).AsSelector().String(),
+	})
 	if err != nil {
 		return errors.Wrap(err, "error listing environments")
 	}
 
 	w := tabwriter.NewWriter(os.Stdout, 0, 0, 2, ' ', 0)
 	fmt.Fprintf(w, "%v\t%v\t%v\t%v\t%v\t%v\t%v\t\n", "NAME", "NAMESPACE", "READY", "STATUS", "IP", "EXECUTORTYPE", "MANAGED")
-	for _, pod := range pods {
+	for _, pod := range podsList.Items {
 
 		// A deletion timestamp indicates that a pod is terminating. Do not count this pod.
 		if pod.ObjectMeta.DeletionTimestamp != nil {

pkg/fission-cli/cmd/environment/update.go

@@ -54,14 +54,11 @@ func (opts *UpdateSubCommand) do(input cli.Input) error {
 
 func (opts *UpdateSubCommand) complete(input cli.Input) (err error) {
 
-	_, currentContextNS, err := util.GetResourceNamespace(input, flagkey.NamespaceEnvironment)
+	_, currentContextNS, err := opts.GetResourceNamespace(input, flagkey.NamespaceEnvironment)
 	if err != nil {
 		return errors.Wrap(err, "error creating environment")
 	}
-	env, err := opts.Client().V1().Environment().Get(&metav1.ObjectMeta{
-		Name:      input.String(flagkey.EnvName),
-		Namespace: currentContextNS,
-	})
+	env, err := opts.Client().FissionClientSet.CoreV1().Environments(currentContextNS).Get(input.Context(), input.String(flagkey.EnvName), metav1.GetOptions{})
 	if err != nil {
 		return errors.Wrap(err, "error finding environment")
 	}
@@ -81,12 +78,16 @@ func (opts *UpdateSubCommand) complete(input cli.Input) (err error) {
 }
 
 func (opts *UpdateSubCommand) run(input cli.Input) error {
-	_, err := opts.Client().V1().Environment().Update(opts.env)
+
+	enew, err := opts.Client().FissionClientSet.CoreV1().Environments(opts.env.ObjectMeta.Namespace).Update(input.Context(), opts.env, metav1.UpdateOptions{})
+	if err != nil {
+		return errors.Wrap(err, "error updating environment")
+	}
 	if err != nil {
 		return errors.Wrap(err, "error updating environment")
 	}
 
-	fmt.Printf("environment '%v' updated\n", opts.env.ObjectMeta.Name)
+	fmt.Printf("environment '%v' updated\n", enew.ObjectMeta.Name)
 	return nil
 }
 

pkg/fission-cli/cmd/function/create.go

@@ -65,7 +65,7 @@ func (opts *CreateSubCommand) do(input cli.Input) error {
 func (opts *CreateSubCommand) complete(input cli.Input) error {
 	fnName := input.String(flagkey.FnName)
 
-	userProvidedNS, fnNamespace, err := util.GetResourceNamespace(input, flagkey.NamespaceFunction)
+	userProvidedNS, fnNamespace, err := opts.GetResourceNamespace(input, flagkey.NamespaceFunction)
 	if err != nil {
 		return errors.Wrap(err, "error retrieving namespace information")
 	}
@@ -81,13 +81,10 @@ func (opts *CreateSubCommand) complete(input cli.Input) error {
 
 	if !toSpec {
 		// check for unique function names within a namespace
-		fn, err := opts.Client().V1().Function().Get(&metav1.ObjectMeta{
-			Name:      input.String(flagkey.FnName),
-			Namespace: fnNamespace,
-		})
-		if err != nil && !ferror.IsNotFound(err) {
+		fn, err := opts.Client().FissionClientSet.CoreV1().Functions(fnNamespace).Get(input.Context(), input.String(flagkey.FnName), metav1.GetOptions{})
+		if err != nil && !k8serrors.IsNotFound(err) {
 			return err
-		} else if fn != nil {
+		} else if fn.Name != "" && fn.Namespace != "" {
 			return errors.New("a function with the same name already exists")
 		}
 	}
@@ -155,10 +152,7 @@ func (opts *CreateSubCommand) complete(input cli.Input) error {
 			pkgMetadata = &pkg.ObjectMeta
 		} else {
 			// use existing package
-			pkg, err = opts.Client().V1().Package().Get(&metav1.ObjectMeta{
-				Namespace: fnNamespace,
-				Name:      pkgName,
-			})
+			pkg, err = opts.Client().FissionClientSet.CoreV1().Packages(fnNamespace).Get(input.Context(), pkgName, metav1.GetOptions{})
 			if err != nil {
 				return errors.Wrap(err, fmt.Sprintf("read package in '%s' in Namespace: %s. Package needs to be present in the same namespace as function", pkgName, fnNamespace))
 			}
@@ -196,10 +190,7 @@ func (opts *CreateSubCommand) complete(input cli.Input) error {
 					fnName, envName))
 			}
 		} else {
-			_, err := opts.Client().V1().Environment().Get(&metav1.ObjectMeta{
-				Namespace: fnNamespace,
-				Name:      envName,
-			})
+			_, err := opts.Client().FissionClientSet.CoreV1().Environments(fnNamespace).Get(input.Context(), envName, metav1.GetOptions{})
 			if err != nil {
 				if e, ok := err.(ferror.Error); ok && e.Code == ferror.ErrorNotFound {
 					console.Warn(fmt.Sprintf("Environment \"%s\" does not exist. Please create the environment before executing the function. \nFor example: `fission env create --name %s --envns %s --image <image>`\n", envName, envName, fnNamespace))
@@ -246,10 +237,7 @@ func (opts *CreateSubCommand) complete(input cli.Input) error {
 		// check the referenced secret is in the same ns as the function, if not give a warning.
 		if !toSpec { // TODO: workaround in order not to block users from creating function spec, remove it.
 			for _, secretName := range secretNames {
-				err := opts.Client().V1().Misc().SecretExists(&metav1.ObjectMeta{
-					Namespace: fnNamespace,
-					Name:      secretName,
-				})
+				err := util.SecretExists(input.Context(), &metav1.ObjectMeta{Namespace: fnNamespace, Name: secretName}, opts.Client().KubernetesClient)
 				if err != nil {
 					if k8serrors.IsNotFound(err) {
 						console.Warn(fmt.Sprintf("Secret %s not found in Namespace: %s. Secret needs to be present in the same namespace as function", secretName, fnNamespace))
@@ -279,10 +267,7 @@ func (opts *CreateSubCommand) complete(input cli.Input) error {
 		// check the referenced cfgmap is in the same ns as the function, if not give a warning.
 		if !toSpec {
 			for _, cfgMapName := range cfgMapNames {
-				err := opts.Client().V1().Misc().ConfigMapExists(&metav1.ObjectMeta{
-					Namespace: fnNamespace,
-					Name:      cfgMapName,
-				})
+				err := util.ConfigMapExists(input.Context(), &metav1.ObjectMeta{Namespace: fnNamespace, Name: cfgMapName}, opts.Client().KubernetesClient)
 				if err != nil {
 					if k8serrors.IsNotFound(err) {
 						console.Warn(fmt.Sprintf("ConfigMap %s not found in Namespace: %s. ConfigMap needs to be present in the same namespace as function", cfgMapName, fnNamespace))
@@ -385,7 +370,7 @@ func (opts *CreateSubCommand) run(input cli.Input) error {
 		return nil
 	}
 
-	_, err := opts.Client().V1().Function().Create(opts.function)
+	_, err := opts.Client().FissionClientSet.CoreV1().Functions(opts.function.ObjectMeta.Namespace).Create(input.Context(), opts.function, metav1.CreateOptions{})
 	if err != nil {
 		return errors.Wrap(err, "error creating function")
 	}
@@ -434,7 +419,7 @@ func (opts *CreateSubCommand) run(input cli.Input) error {
 			},
 		},
 	}
-	_, err = opts.Client().V1().HTTPTrigger().Create(ht)
+	_, err = opts.Client().FissionClientSet.CoreV1().HTTPTriggers(opts.function.ObjectMeta.Namespace).Create(input.Context(), ht, metav1.CreateOptions{})
 	if err != nil {
 		return errors.Wrap(err, "error creating HTTP trigger")
 	}

pkg/fission-cli/cmd/function/delete.go

@@ -38,7 +38,7 @@ func Delete(input cli.Input) error {
 
 func (opts *DeleteSubCommand) do(input cli.Input) error {
 
-	_, namespace, err := util.GetResourceNamespace(input, flagkey.NamespaceFunction)
+	_, namespace, err := opts.GetResourceNamespace(input, flagkey.NamespaceFunction)
 	if err != nil {
 		return errors.Wrap(err, "error in deleting function ")
 	}
@@ -47,7 +47,7 @@ func (opts *DeleteSubCommand) do(input cli.Input) error {
 		Namespace: namespace,
 	}
 
-	err = opts.Client().V1().Function().Delete(m)
+	err = opts.Client().FissionClientSet.CoreV1().Functions(namespace).Delete(input.Context(), input.String(flagkey.FnName), metav1.DeleteOptions{})
 	if err != nil {
 		if input.Bool(flagkey.IgnoreNotFound) && util.IsNotFound(err) {
 			return nil

pkg/fission-cli/cmd/function/get.go

@@ -25,7 +25,6 @@ import (
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
 	"github.com/fission/fission/pkg/fission-cli/cmd"
 	flagkey "github.com/fission/fission/pkg/fission-cli/flag/key"
-	"github.com/fission/fission/pkg/fission-cli/util"
 )
 
 type GetSubCommand struct {
@@ -37,22 +36,16 @@ func Get(input cli.Input) error {
 }
 
 func (opts *GetSubCommand) do(input cli.Input) error {
-	_, namespace, err := util.GetResourceNamespace(input, flagkey.NamespaceFunction)
+	_, namespace, err := opts.GetResourceNamespace(input, flagkey.NamespaceFunction)
 	if err != nil {
 		return errors.Wrap(err, "error in get function ")
 	}
-	fn, err := opts.Client().V1().Function().Get(&metav1.ObjectMeta{
-		Name:      input.String(flagkey.FnName),
-		Namespace: namespace,
-	})
+	fn, err := opts.Client().FissionClientSet.CoreV1().Functions(namespace).Get(input.Context(), input.String(flagkey.FnName), metav1.GetOptions{})
 	if err != nil {
 		return errors.Wrap(err, "error getting function")
 	}
 
-	pkg, err := opts.Client().V1().Package().Get(&metav1.ObjectMeta{
-		Name:      fn.Spec.Package.PackageRef.Name,
-		Namespace: fn.Spec.Package.PackageRef.Namespace,
-	})
+	pkg, err := opts.Client().FissionClientSet.CoreV1().Packages(fn.Spec.Package.PackageRef.Namespace).Get(input.Context(), fn.Spec.Package.PackageRef.Name, metav1.GetOptions{})
 	if err != nil {
 		return errors.Wrap(err, "error getting package")
 	}

pkg/fission-cli/cmd/function/getmeta.go

@@ -25,7 +25,6 @@ import (
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
 	"github.com/fission/fission/pkg/fission-cli/cmd"
 	flagkey "github.com/fission/fission/pkg/fission-cli/flag/key"
-	"github.com/fission/fission/pkg/fission-cli/util"
 )
 
 type GetMetaSubCommand struct {
@@ -37,15 +36,12 @@ func GetMeta(input cli.Input) error {
 }
 
 func (opts *GetMetaSubCommand) do(input cli.Input) error {
-	_, namespace, err := util.GetResourceNamespace(input, flagkey.NamespaceFunction)
+	_, namespace, err := opts.GetResourceNamespace(input, flagkey.NamespaceFunction)
 	if err != nil {
 		return errors.Wrap(err, "error in getting meta function ")
 	}
 
-	fn, err := opts.Client().V1().Function().Get(&metav1.ObjectMeta{
-		Name:      input.String(flagkey.FnName),
-		Namespace: namespace,
-	})
+	fn, err := opts.Client().FissionClientSet.CoreV1().Functions(namespace).Get(input.Context(), input.String(flagkey.FnName), metav1.GetOptions{})
 	if err != nil {
 		return errors.Wrap(err, "error getting function")
 	}

pkg/fission-cli/cmd/function/list.go

@@ -23,12 +23,11 @@ import (
 	"text/tabwriter"
 
 	"github.com/pkg/errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
-	v1 "github.com/fission/fission/pkg/apis/core/v1"
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
 	"github.com/fission/fission/pkg/fission-cli/cmd"
 	flagkey "github.com/fission/fission/pkg/fission-cli/flag/key"
-	"github.com/fission/fission/pkg/fission-cli/util"
 )
 
 type ListSubCommand struct {
@@ -40,17 +39,16 @@ func List(input cli.Input) error {
 }
 
 func (opts *ListSubCommand) do(input cli.Input) error {
-	_, namespace, err := util.GetResourceNamespace(input, flagkey.NamespaceFunction)
+	_, namespace, err := opts.GetResourceNamespace(input, flagkey.NamespaceFunction)
 	if err != nil {
 		return errors.Wrap(err, "error in listing function ")
 	}
 
-	var fns []v1.Function
 	if input.Bool(flagkey.AllNamespaces) {
-		fns, err = opts.Client().V1().Function().List("")
-	} else {
-		fns, err = opts.Client().V1().Function().List(namespace)
+		namespace = metav1.NamespaceAll
 	}
+	fns, err := opts.Client().FissionClientSet.CoreV1().Functions(namespace).List(input.Context(), metav1.ListOptions{})
+
 	if err != nil {
 		return errors.Wrap(err, "error listing functions")
 	}
@@ -58,7 +56,7 @@ func (opts *ListSubCommand) do(input cli.Input) error {
 	w := tabwriter.NewWriter(os.Stdout, 0, 0, 1, ' ', 0)
 
 	fmt.Fprintf(w, "%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\n", "NAME", "ENV", "EXECUTORTYPE", "MINSCALE", "MAXSCALE", "MINCPU", "MAXCPU", "MINMEMORY", "MAXMEMORY", "SECRETS", "CONFIGMAPS", "NAMESPACE")
-	for _, f := range fns {
+	for _, f := range fns.Items {
 		secrets := f.Spec.Secrets
 		configMaps := f.Spec.ConfigMaps
 		var secretsList, configMapList []string

pkg/fission-cli/cmd/function/log.go

@@ -40,14 +40,13 @@ func Log(input cli.Input) error {
 }
 
 func (opts *LogSubCommand) do(input cli.Input) error {
-	_, namespace, err := util.GetResourceNamespace(input, flagkey.NamespaceFunction)
+	_, namespace, err := opts.GetResourceNamespace(input, flagkey.NamespaceFunction)
 	if err != nil {
 		return errors.Wrap(err, "error in logs for function ")
 	}
 
 	dbType := input.String(flagkey.FnLogDBType)
 	fnPod := input.String(flagkey.FnLogPod)
-	kubeContext := input.String(flagkey.KubeContext)
 
 	logReverseQuery := !input.Bool(flagkey.FnLogFollow) && input.Bool(flagkey.FnLogReverseQuery)
 
@@ -56,15 +55,12 @@ func (opts *LogSubCommand) do(input cli.Input) error {
 		recordLimit = 1000
 	}
 
-	f, err := opts.Client().V1().Function().Get(&metav1.ObjectMeta{
-		Name:      input.String(flagkey.FnName),
-		Namespace: namespace,
-	})
+	f, err := opts.Client().FissionClientSet.CoreV1().Functions(namespace).Get(input.Context(), input.String(flagkey.FnName), metav1.GetOptions{})
 	if err != nil {
 		return errors.Wrap(err, "error getting function")
 	}
 
-	server, err := util.GetApplicationUrl(input.Context(), "application=fission-api", kubeContext)
+	server, err := util.GetApplicationUrl(input.Context(), opts.Client(), "application=fission-api")
 	if err != nil {
 		return err
 	}

pkg/fission-cli/cmd/function/pods.go

@@ -23,12 +23,12 @@ import (
 
 	"github.com/pkg/errors"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/labels"
 
 	v1 "github.com/fission/fission/pkg/apis/core/v1"
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
 	"github.com/fission/fission/pkg/fission-cli/cmd"
 	flagkey "github.com/fission/fission/pkg/fission-cli/flag/key"
-	"github.com/fission/fission/pkg/fission-cli/util"
 	"github.com/fission/fission/pkg/utils"
 )
 
@@ -42,35 +42,34 @@ func ListPods(input cli.Input) error {
 
 func (opts *ListPodsSubCommand) do(input cli.Input) error {
 
-	_, namespace, err := util.GetResourceNamespace(input, flagkey.NamespaceFunction)
+	_, namespace, err := opts.GetResourceNamespace(input, flagkey.NamespaceFunction)
 
 	if err != nil {
 		return errors.Wrap(err, "error in finding pod for function ")
 	}
 	// validate function
-	_, err = opts.Client().V1().Function().Get(&metav1.ObjectMeta{
-		Name:      input.String(flagkey.FnName),
-		Namespace: namespace,
-	})
+	_, err = opts.Client().FissionClientSet.CoreV1().Functions(namespace).Get(input.Context(), input.String(flagkey.FnName), metav1.GetOptions{})
 	if err != nil {
 		return errors.Wrap(err, "error getting function")
 	}
 
-	m := &metav1.ObjectMeta{
-		Name: input.String(flagkey.FnName),
-		Labels: map[string]string{
-			v1.FUNCTION_NAMESPACE: namespace,
-		},
+	selector := map[string]string{
+		v1.FUNCTION_NAME: input.String(flagkey.FnName),
+	}
+	if len(namespace) != 0 {
+		selector[v1.FUNCTION_NAMESPACE] = namespace
 	}
 
-	pods, err := opts.Client().V1().Function().ListPods(m)
+	pods, err := opts.Client().KubernetesClient.CoreV1().Pods(metav1.NamespaceAll).List(input.Context(), metav1.ListOptions{
+		LabelSelector: labels.Set(selector).AsSelector().String(),
+	})
 	if err != nil {
 		return errors.Wrap(err, "error listing environments")
 	}
 
 	w := tabwriter.NewWriter(os.Stdout, 0, 0, 2, ' ', 0)
 	fmt.Fprintf(w, "%v\t%v\t%v\t%v\t%v\t%v\t%v\t\n", "NAME", "NAMESPACE", "READY", "STATUS", "IP", "EXECUTORTYPE", "MANAGED")
-	for _, pod := range pods {
+	for _, pod := range pods.Items {
 
 		// A deletion timestamp indicates that a pod is terminating. Do not count this pod.
 		if pod.ObjectMeta.DeletionTimestamp != nil {

pkg/fission-cli/cmd/function/run_container.go

@@ -22,11 +22,10 @@ import (
 
 	"github.com/pkg/errors"
 	apiv1 "k8s.io/api/core/v1"
-	k8serrors "k8s.io/apimachinery/pkg/api/errors"
+	kerrors "k8s.io/apimachinery/pkg/api/errors"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
 	fv1 "github.com/fission/fission/pkg/apis/core/v1"
-	ferror "github.com/fission/fission/pkg/error"
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
 	"github.com/fission/fission/pkg/fission-cli/cmd"
 	"github.com/fission/fission/pkg/fission-cli/cmd/spec"
@@ -56,7 +55,7 @@ func (opts *RunContainerSubCommand) do(input cli.Input) error {
 func (opts *RunContainerSubCommand) complete(input cli.Input) error {
 	fnName := input.String(flagkey.FnName)
 
-	_, fnNamespace, err := util.GetResourceNamespace(input, flagkey.NamespaceFunction)
+	_, fnNamespace, err := opts.GetResourceNamespace(input, flagkey.NamespaceFunction)
 	if err != nil {
 		return errors.Wrap(err, "error in running container for function ")
 	}
@@ -70,13 +69,11 @@ func (opts *RunContainerSubCommand) complete(input cli.Input) error {
 
 	if !toSpec {
 		// check for unique function names within a namespace
-		fn, err := opts.Client().V1().Function().Get(&metav1.ObjectMeta{
-			Name:      input.String(flagkey.FnName),
-			Namespace: fnNamespace,
-		})
-		if err != nil && !ferror.IsNotFound(err) {
+		fn, err := opts.Client().FissionClientSet.CoreV1().Functions(fnNamespace).Get(input.Context(), input.String(flagkey.FnName), metav1.GetOptions{})
+
+		if err != nil && !kerrors.IsNotFound(err) {
 			return err
-		} else if fn != nil {
+		} else if fn.Name != "" && fn.Namespace != "" {
 			return errors.New("a function with the same name already exists")
 		}
 	}
@@ -128,12 +125,9 @@ func (opts *RunContainerSubCommand) complete(input cli.Input) error {
 		// check the referenced secret is in the same ns as the function, if not give a warning.
 		if !toSpec { // TODO: workaround in order not to block users from creating function spec, remove it.
 			for _, secretName := range secretNames {
-				err := opts.Client().V1().Misc().SecretExists(&metav1.ObjectMeta{
-					Namespace: fnNamespace,
-					Name:      secretName,
-				})
+				err := util.SecretExists(input.Context(), &metav1.ObjectMeta{Namespace: fnNamespace, Name: secretName}, opts.Client().KubernetesClient)
 				if err != nil {
-					if k8serrors.IsNotFound(err) {
+					if kerrors.IsNotFound(err) {
 						console.Warn(fmt.Sprintf("Secret %s not found in Namespace: %s. Secret needs to be present in the same namespace as function", secretName, fnNamespace))
 					} else {
 						return errors.Wrapf(err, "error checking secret %s", secretName)
@@ -154,12 +148,10 @@ func (opts *RunContainerSubCommand) complete(input cli.Input) error {
 		// check the referenced cfgmap is in the same ns as the function, if not give a warning.
 		if !toSpec {
 			for _, cfgMapName := range cfgMapNames {
-				err := opts.Client().V1().Misc().ConfigMapExists(&metav1.ObjectMeta{
-					Namespace: fnNamespace,
-					Name:      cfgMapName,
-				})
+				err := util.ConfigMapExists(input.Context(), &metav1.ObjectMeta{Namespace: fnNamespace, Name: cfgMapName}, opts.Client().KubernetesClient)
+
 				if err != nil {
-					if k8serrors.IsNotFound(err) {
+					if kerrors.IsNotFound(err) {
 						console.Warn(fmt.Sprintf("ConfigMap %s not found in Namespace: %s. ConfigMap needs to be present in the same namespace as function", cfgMapName, fnNamespace))
 					} else {
 						return errors.Wrapf(err, "error checking configmap %s", cfgMapName)
@@ -238,7 +230,7 @@ func (opts *RunContainerSubCommand) run(input cli.Input) error {
 		return nil
 	}
 
-	_, err := opts.Client().V1().Function().Create(opts.function)
+	_, err := opts.Client().FissionClientSet.CoreV1().Functions(opts.function.ObjectMeta.Namespace).Create(input.Context(), opts.function, metav1.CreateOptions{})
 	if err != nil {
 		return errors.Wrap(err, "error creating function")
 	}

pkg/fission-cli/cmd/function/test.go

@@ -32,7 +32,6 @@ import (
 	"go.opentelemetry.io/otel"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
-	"github.com/fission/fission/pkg/controller/client"
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
 	"github.com/fission/fission/pkg/fission-cli/cmd"
 	"github.com/fission/fission/pkg/fission-cli/cmd/httptrigger"
@@ -52,7 +51,7 @@ func Test(input cli.Input) error {
 
 func (opts *TestSubCommand) do(input cli.Input) error {
 
-	_, namespace, err := util.GetResourceNamespace(input, flagkey.NamespaceFunction)
+	_, namespace, err := opts.GetResourceNamespace(input, flagkey.NamespaceFunction)
 	if err != nil {
 		return errors.Wrap(err, "error in testing function ")
 	}
@@ -61,14 +60,13 @@ func (opts *TestSubCommand) do(input cli.Input) error {
 		Name:      input.String(flagkey.FnName),
 		Namespace: namespace,
 	}
-	kubeContext := input.String(flagkey.KubeContext)
 	routerURL := os.Getenv("FISSION_ROUTER")
 	if len(routerURL) != 0 {
 		console.Warn("The environment variable FISSION_ROUTER is no longer supported for this command")
 	}
 
 	// Portforward to the fission router
-	localRouterPort, err := util.SetupPortForward(input.Context(), util.GetFissionNamespace(), "application=fission-router", kubeContext)
+	localRouterPort, err := util.SetupPortForward(input.Context(), opts.Client(), util.GetFissionNamespace(), "application=fission-router")
 	if err != nil {
 		return err
 	}
@@ -150,15 +148,13 @@ func (opts *TestSubCommand) do(input cli.Input) error {
 	}
 
 	console.Errorf("Error calling function %s: %d; Please try again or fix the error: %s\n", m.Name, resp.StatusCode, string(body))
-	log, err := printPodLogs(opts.Client(), m)
+	err = printPodLogs(input.Context(), opts.Client(), m)
 	if err != nil {
 		console.Errorf("Error getting function logs from controller: %v. Try to get logs from log database.", err)
 		err = Log(input)
 		if err != nil {
 			return errors.Wrapf(err, "error retrieving function log from log database")
 		}
-	} else {
-		console.Info(log)
 	}
 	return errors.New("error getting function response")
 }
@@ -224,21 +220,12 @@ func doHTTPRequest(ctx context.Context, url string, headers []string, method, bo
 	return resp, nil
 }
 
-func printPodLogs(client client.Interface, fnMeta *metav1.ObjectMeta) (string, error) {
-	reader, statusCode, err := client.V1().Misc().PodLogs(fnMeta)
+func printPodLogs(ctx context.Context, client cmd.Client, fnMeta *metav1.ObjectMeta) error {
+	err := util.FunctionPodLogs(ctx, fnMeta.Name, fnMeta.Namespace, client)
+
 	if err != nil {
-		return "", errors.Wrap(err, "error executing get logs request")
-	}
-	defer reader.Close()
-
-	body, err := io.ReadAll(reader)
-	if err != nil {
-		return "", errors.Wrap(err, "error reading the response body")
+		return errors.Wrap(err, "error executing get logs request")
 	}
 
-	if statusCode != http.StatusOK {
-		return string(body), errors.Errorf("error getting logs from controller, status code: '%v'", statusCode)
-	}
-
-	return string(body), nil
+	return nil
 }

pkg/fission-cli/cmd/function/update.go

@@ -51,15 +51,12 @@ func (opts *UpdateSubCommand) do(input cli.Input) error {
 
 func (opts *UpdateSubCommand) complete(input cli.Input) error {
 	fnName := input.String(flagkey.FnName)
-	_, fnNamespace, err := util.GetResourceNamespace(input, flagkey.NamespaceFunction)
+	_, fnNamespace, err := opts.GetResourceNamespace(input, flagkey.NamespaceFunction)
 	if err != nil {
 		return errors.Wrap(err, "error in updating function ")
 	}
 
-	function, err := opts.Client().V1().Function().Get(&metav1.ObjectMeta{
-		Name:      input.String(flagkey.FnName),
-		Namespace: fnNamespace,
-	})
+	function, err := opts.Client().FissionClientSet.CoreV1().Functions(fnNamespace).Get(input.Context(), input.String(flagkey.FnName), metav1.GetOptions{})
 	if err != nil {
 		return errors.Wrap(err, fmt.Sprintf("read function '%v'", fnName))
 	}
@@ -90,10 +87,7 @@ func (opts *UpdateSubCommand) complete(input cli.Input) error {
 
 		// check that the referenced secret is in the same ns as the function, if not give a warning.
 		for _, secretName := range secretNames {
-			err := opts.Client().V1().Misc().SecretExists(&metav1.ObjectMeta{
-				Namespace: fnNamespace,
-				Name:      secretName,
-			})
+			err := util.SecretExists(input.Context(), &metav1.ObjectMeta{Namespace: fnNamespace, Name: secretName}, opts.Client().KubernetesClient)
 			if k8serrors.IsNotFound(err) {
 				console.Warn(fmt.Sprintf("secret %s not found in Namespace: %s. Secret needs to be present in the same namespace as function", secretName, fnNamespace))
 			}
@@ -114,10 +108,7 @@ func (opts *UpdateSubCommand) complete(input cli.Input) error {
 
 		// check that the referenced cfgmap is in the same ns as the function, if not give a warning.
 		for _, cfgMapName := range cfgMapNames {
-			err := opts.Client().V1().Misc().ConfigMapExists(&metav1.ObjectMeta{
-				Namespace: fnNamespace,
-				Name:      cfgMapName,
-			})
+			err := util.ConfigMapExists(input.Context(), &metav1.ObjectMeta{Namespace: fnNamespace, Name: cfgMapName}, opts.Client().KubernetesClient)
 			if k8serrors.IsNotFound(err) {
 				console.Warn(fmt.Sprintf("ConfigMap %s not found in Namespace: %s. ConfigMap needs to be present in the same namespace as the function", cfgMapName, fnNamespace))
 			}
@@ -186,17 +177,14 @@ func (opts *UpdateSubCommand) complete(input cli.Input) error {
 
 	function.Spec.Resources = *resReqs
 
-	pkg, err := opts.Client().V1().Package().Get(&metav1.ObjectMeta{
-		Namespace: fnNamespace,
-		Name:      pkgName,
-	})
+	pkg, err := opts.Client().FissionClientSet.CoreV1().Packages(fnNamespace).Get(input.Context(), pkgName, metav1.GetOptions{})
 	if err != nil {
 		return errors.Wrap(err, fmt.Sprintf("read package '%v.%v'. Pkg should be present in the same ns as the function", pkgName, fnNamespace))
 	}
 
 	forceUpdate := input.Bool(flagkey.PkgForce)
 
-	fnList, err := _package.GetFunctionsByPackage(opts.Client(), pkg.ObjectMeta.Name, pkg.ObjectMeta.Namespace)
+	fnList, err := _package.GetFunctionsByPackage(input.Context(), opts.Client(), pkg.ObjectMeta.Name, pkg.ObjectMeta.Namespace)
 	if err != nil {
 		return errors.Wrap(err, "error getting function list")
 	}
@@ -222,7 +210,7 @@ func (opts *UpdateSubCommand) complete(input cli.Input) error {
 				fns = append(fns, fn)
 			}
 		}
-		err = _package.UpdateFunctionPackageResourceVersion(opts.Client(), newPkgMeta, fns...)
+		err = _package.UpdateFunctionPackageResourceVersion(input.Context(), opts.Client(), newPkgMeta, fns...)
 		if err != nil {
 			return errors.Wrap(err, "error updating function package reference resource version")
 		}
@@ -255,7 +243,7 @@ func (opts *UpdateSubCommand) complete(input cli.Input) error {
 }
 
 func (opts *UpdateSubCommand) run(input cli.Input) error {
-	_, err := opts.Client().V1().Function().Update(opts.function)
+	_, err := opts.Client().FissionClientSet.CoreV1().Functions(opts.function.Namespace).Update(input.Context(), opts.function, metav1.UpdateOptions{})
 	if err != nil {
 		return errors.Wrap(err, "error updating function")
 	}

pkg/fission-cli/cmd/function/update_container.go

@@ -53,15 +53,13 @@ func (opts *UpdateContainerSubCommand) do(input cli.Input) error {
 func (opts *UpdateContainerSubCommand) complete(input cli.Input) error {
 	fnName := input.String(flagkey.FnName)
 
-	_, fnNamespace, err := util.GetResourceNamespace(input, flagkey.NamespaceFunction)
+	_, fnNamespace, err := opts.GetResourceNamespace(input, flagkey.NamespaceFunction)
 	if err != nil {
 		return errors.Wrap(err, "error in updating container for function ")
 	}
 
-	function, err := opts.Client().V1().Function().Get(&metav1.ObjectMeta{
-		Name:      input.String(flagkey.FnName),
-		Namespace: fnNamespace,
-	})
+	function, err := opts.Client().FissionClientSet.CoreV1().Functions(fnNamespace).Get(input.Context(), input.String(flagkey.FnName), metav1.GetOptions{})
+
 	if err != nil {
 		return errors.Wrap(err, fmt.Sprintf("read function '%v'", fnName))
 	}
@@ -84,10 +82,7 @@ func (opts *UpdateContainerSubCommand) complete(input cli.Input) error {
 
 		// check that the referenced secret is in the same ns as the function, if not give a warning.
 		for _, secretName := range secretNames {
-			err := opts.Client().V1().Misc().SecretExists(&metav1.ObjectMeta{
-				Namespace: fnNamespace,
-				Name:      secretName,
-			})
+			err := util.SecretExists(input.Context(), &metav1.ObjectMeta{Namespace: fnNamespace, Name: secretName}, opts.Client().KubernetesClient)
 			if k8serrors.IsNotFound(err) {
 				console.Warn(fmt.Sprintf("secret %s not found in Namespace: %s. Secret needs to be present in the same namespace as function", secretName, fnNamespace))
 			}
@@ -108,10 +103,7 @@ func (opts *UpdateContainerSubCommand) complete(input cli.Input) error {
 
 		// check that the referenced cfgmap is in the same ns as the function, if not give a warning.
 		for _, cfgMapName := range cfgMapNames {
-			err := opts.Client().V1().Misc().ConfigMapExists(&metav1.ObjectMeta{
-				Namespace: fnNamespace,
-				Name:      cfgMapName,
-			})
+			err := util.ConfigMapExists(input.Context(), &metav1.ObjectMeta{Namespace: fnNamespace, Name: cfgMapName}, opts.Client().KubernetesClient)
 			if k8serrors.IsNotFound(err) {
 				console.Warn(fmt.Sprintf("ConfigMap %s not found in Namespace: %s. ConfigMap needs to be present in the same namespace as the function", cfgMapName, fnNamespace))
 			}
@@ -192,7 +184,7 @@ func (opts *UpdateContainerSubCommand) complete(input cli.Input) error {
 }
 
 func (opts *UpdateContainerSubCommand) run(input cli.Input) error {
-	_, err := opts.Client().V1().Function().Update(opts.function)
+	_, err := opts.Client().FissionClientSet.CoreV1().Functions(opts.function.Namespace).Update(input.Context(), opts.function, metav1.UpdateOptions{})
 	if err != nil {
 		return errors.Wrap(err, "error updating function")
 	}

pkg/fission-cli/cmd/httptrigger/create.go

@@ -24,10 +24,10 @@ import (
 
 	"github.com/pkg/errors"
 	uuid "github.com/satori/go.uuid"
+	kerrors "k8s.io/apimachinery/pkg/api/errors"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
 	fv1 "github.com/fission/fission/pkg/apis/core/v1"
-	ferror "github.com/fission/fission/pkg/error"
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
 	"github.com/fission/fission/pkg/fission-cli/cmd"
 	"github.com/fission/fission/pkg/fission-cli/cmd/spec"
@@ -77,7 +77,7 @@ func (opts *CreateSubCommand) complete(input cli.Input) error {
 		triggerName = id.String()
 	}
 
-	userProvidedNS, fnNamespace, err := util.GetResourceNamespace(input, flagkey.NamespaceFunction)
+	userProvidedNS, fnNamespace, err := opts.GetResourceNamespace(input, flagkey.NamespaceFunction)
 	if err != nil {
 		return errors.Wrap(err, "error in deleting function ")
 	}
@@ -129,11 +129,11 @@ func (opts *CreateSubCommand) complete(input cli.Input) error {
 	// For Specs, the spec validate checks for function reference
 	if input.Bool(flagkey.SpecSave) {
 
-		htTrigger, err := opts.Client().V1().HTTPTrigger().Get(&m)
-		if err != nil && !ferror.IsNotFound(err) {
+		htTrigger, err := opts.Client().FissionClientSet.CoreV1().HTTPTriggers(m.Namespace).Get(input.Context(), m.Name, metav1.GetOptions{})
+		if err != nil && !kerrors.IsNotFound(err) {
 			return err
 		}
-		if htTrigger != nil {
+		if htTrigger.Name != "" && htTrigger.Namespace != "" {
 			return errors.New("duplicate trigger exists, choose a different name or leave it empty for fission to auto-generate it")
 		}
 
@@ -164,16 +164,16 @@ func (opts *CreateSubCommand) complete(input cli.Input) error {
 			Name:      triggerName,
 			Namespace: fnNamespace,
 		}
+		htTrigger, err := opts.Client().FissionClientSet.CoreV1().HTTPTriggers(m.Namespace).Get(input.Context(), m.Name, metav1.GetOptions{})
 
-		htTrigger, err := opts.Client().V1().HTTPTrigger().Get(&m)
-		if err != nil && !ferror.IsNotFound(err) {
+		if err != nil && !kerrors.IsNotFound(err) {
 			return err
 		}
-		if htTrigger != nil {
+		if htTrigger != nil && htTrigger.Namespace != "" {
 			return errors.New("duplicate trigger exists, choose a different name or leave it empty for fission to auto-generate it")
 		}
 
-		err = util.CheckFunctionExistence(opts.Client(), functionList, fnNamespace)
+		err = util.CheckFunctionExistence(input.Context(), opts.Client(), functionList, fnNamespace)
 		if err != nil {
 			console.Warn(err.Error())
 		}
@@ -226,7 +226,13 @@ func (opts *CreateSubCommand) run(input cli.Input) error {
 		return nil
 	}
 
-	_, err := opts.Client().V1().HTTPTrigger().Create(opts.trigger)
+	// Ensure we don't have a duplicate HTTP route defined (same URL and method)
+	err := util.CheckHTTPTriggerDuplicates(input.Context(), opts.Client(), opts.trigger)
+	if err != nil {
+		return errors.Wrap(err, "Error while creating HTTP Trigger")
+	}
+
+	_, err = opts.Client().FissionClientSet.CoreV1().HTTPTriggers(opts.trigger.Namespace).Create(input.Context(), opts.trigger, metav1.CreateOptions{})
 	if err != nil {
 		return errors.Wrap(err, "create HTTP trigger")
 	}

pkg/fission-cli/cmd/httptrigger/delete.go

@@ -58,7 +58,7 @@ func (opts *DeleteSubCommand) complete(input cli.Input) (err error) {
 		return errors.Errorf("need either of --%v or --%v and not both arguments", flagkey.HtName, flagkey.HtFnName)
 	}
 
-	_, opts.namespace, err = util.GetResourceNamespace(input, flagkey.NamespaceTrigger)
+	_, opts.namespace, err = opts.GetResourceNamespace(input, flagkey.NamespaceTrigger)
 	if err != nil {
 		return errors.Wrap(err, "error in deleting function ")
 	}
@@ -66,7 +66,7 @@ func (opts *DeleteSubCommand) complete(input cli.Input) (err error) {
 }
 
 func (opts *DeleteSubCommand) run(input cli.Input) error {
-	triggers, err := opts.Client().V1().HTTPTrigger().List(opts.namespace)
+	triggers, err := opts.Client().FissionClientSet.CoreV1().HTTPTriggers(opts.namespace).List(input.Context(), metav1.ListOptions{})
 	if err != nil {
 		return errors.Wrap(err, "error getting HTTP trigger list")
 	}
@@ -74,7 +74,7 @@ func (opts *DeleteSubCommand) run(input cli.Input) error {
 	var triggersToDelete []string
 
 	if len(opts.functionName) > 0 {
-		for _, trigger := range triggers {
+		for _, trigger := range triggers.Items {
 			// TODO: delete canary http triggers as well.
 			if trigger.Spec.FunctionReference.Name == opts.functionName {
 				triggersToDelete = append(triggersToDelete, trigger.ObjectMeta.Name)
@@ -87,10 +87,7 @@ func (opts *DeleteSubCommand) run(input cli.Input) error {
 	errs := utils.MultiErrorWithFormat()
 
 	for _, name := range triggersToDelete {
-		err := opts.Client().V1().HTTPTrigger().Delete(&metav1.ObjectMeta{
-			Name:      name,
-			Namespace: opts.namespace,
-		})
+		err := opts.Client().FissionClientSet.CoreV1().HTTPTriggers(opts.namespace).Delete(input.Context(), name, metav1.DeleteOptions{})
 		if err != nil {
 			errs = multierror.Append(errs, err)
 		} else {

pkg/fission-cli/cmd/httptrigger/get.go

@@ -29,7 +29,6 @@ import (
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
 	"github.com/fission/fission/pkg/fission-cli/cmd"
 	flagkey "github.com/fission/fission/pkg/fission-cli/flag/key"
-	"github.com/fission/fission/pkg/fission-cli/util"
 )
 
 type GetSubCommand struct {
@@ -45,16 +44,12 @@ func (opts *GetSubCommand) do(input cli.Input) error {
 }
 
 func (opts *GetSubCommand) run(input cli.Input) (err error) {
-	_, namespace, err := util.GetResourceNamespace(input, flagkey.NamespaceFunction)
+	_, namespace, err := opts.GetResourceNamespace(input, flagkey.NamespaceFunction)
 	if err != nil {
 		return errors.Wrap(err, "error in deleting function ")
 	}
 
-	m := &metav1.ObjectMeta{
-		Name:      input.String(flagkey.HtName),
-		Namespace: namespace,
-	}
-	ht, err := opts.Client().V1().HTTPTrigger().Get(m)
+	ht, err := opts.Client().FissionClientSet.CoreV1().HTTPTriggers(namespace).Get(input.Context(), input.String(flagkey.HtName), metav1.GetOptions{})
 	if err != nil {
 		return errors.Wrap(err, "error getting http trigger")
 	}

pkg/fission-cli/cmd/httptrigger/list.go

@@ -18,12 +18,12 @@ package httptrigger
 
 import (
 	"github.com/pkg/errors"
+	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
 	fv1 "github.com/fission/fission/pkg/apis/core/v1"
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
 	"github.com/fission/fission/pkg/fission-cli/cmd"
 	flagkey "github.com/fission/fission/pkg/fission-cli/flag/key"
-	"github.com/fission/fission/pkg/fission-cli/util"
 )
 
 type ListSubCommand struct {
@@ -40,17 +40,15 @@ func (opts *ListSubCommand) do(input cli.Input) error {
 
 func (opts *ListSubCommand) run(input cli.Input) (err error) {
 
-	_, namespace, err := util.GetResourceNamespace(input, flagkey.NamespaceTrigger)
+	_, namespace, err := opts.GetResourceNamespace(input, flagkey.NamespaceTrigger)
 	if err != nil {
 		return errors.Wrap(err, "error in deleting function ")
 	}
 
-	var hts []fv1.HTTPTrigger
 	if input.Bool(flagkey.AllNamespaces) {
-		hts, err = opts.Client().V1().HTTPTrigger().List("")
-	} else {
-		hts, err = opts.Client().V1().HTTPTrigger().List(namespace)
+		namespace = v1.NamespaceAll
 	}
+	hts, err := opts.Client().FissionClientSet.CoreV1().HTTPTriggers(namespace).List(input.Context(), v1.ListOptions{})
 
 	if err != nil {
 		return errors.Wrap(err, "error listing HTTP triggers")
@@ -59,7 +57,7 @@ func (opts *ListSubCommand) run(input cli.Input) (err error) {
 	filterFunctionName := input.String(flagkey.HtFnName)
 
 	var triggers []fv1.HTTPTrigger
-	for _, ht := range hts {
+	for _, ht := range hts.Items {
 		// TODO: list canary http triggers as well.
 		if len(filterFunctionName) == 0 ||
 			(len(filterFunctionName) > 0 && filterFunctionName == ht.Spec.FunctionReference.Name) {

pkg/fission-cli/cmd/httptrigger/update.go

@@ -51,15 +51,12 @@ func (opts *UpdateSubCommand) do(input cli.Input) error {
 func (opts *UpdateSubCommand) complete(input cli.Input) (err error) {
 	htName := input.String(flagkey.HtName)
 
-	_, triggerNamespace, err := util.GetResourceNamespace(input, flagkey.NamespaceTrigger)
+	_, triggerNamespace, err := opts.GetResourceNamespace(input, flagkey.NamespaceTrigger)
 	if err != nil {
 		return errors.Wrap(err, "error in deleting function ")
 	}
 
-	ht, err := opts.Client().V1().HTTPTrigger().Get(&metav1.ObjectMeta{
-		Name:      htName,
-		Namespace: triggerNamespace,
-	})
+	ht, err := opts.Client().FissionClientSet.CoreV1().HTTPTriggers(triggerNamespace).Get(input.Context(), htName, metav1.GetOptions{})
 	if err != nil {
 		return errors.Wrap(err, "error getting HTTP trigger")
 	}
@@ -102,7 +99,7 @@ func (opts *UpdateSubCommand) complete(input cli.Input) (err error) {
 	if input.IsSet(flagkey.HtFnName) {
 		// get the functions and their weights if specified
 		functionList := input.StringSlice(flagkey.HtFnName)
-		err := util.CheckFunctionExistence(opts.Client(), functionList, triggerNamespace)
+		err := util.CheckFunctionExistence(input.Context(), opts.Client(), functionList, triggerNamespace)
 		if err != nil {
 			console.Warn(err.Error())
 		}
@@ -151,7 +148,13 @@ func (opts *UpdateSubCommand) complete(input cli.Input) (err error) {
 }
 
 func (opts *UpdateSubCommand) run(input cli.Input) error {
-	_, err := opts.Client().V1().HTTPTrigger().Update(opts.trigger)
+
+	err := util.CheckHTTPTriggerDuplicates(input.Context(), opts.Client(), opts.trigger)
+	if err != nil {
+		return errors.Wrap(err, "Error while creating HTTP Trigger")
+	}
+
+	_, err = opts.Client().FissionClientSet.CoreV1().HTTPTriggers(opts.trigger.ObjectMeta.Namespace).Update(input.Context(), opts.trigger, metav1.UpdateOptions{})
 	if err != nil {
 		return errors.Wrap(err, "error updating the HTTP trigger")
 	}

pkg/fission-cli/cmd/kubewatch/create.go

@@ -61,7 +61,7 @@ func (opts *CreateSubCommand) complete(input cli.Input) error {
 	}
 	fnName := input.String(flagkey.KwFnName)
 
-	_, namespace, err := util.GetResourceNamespace(input, flagkey.KwNamespace)
+	_, namespace, err := opts.GetResourceNamespace(input, flagkey.KwNamespace)
 	if err != nil {
 		return errors.Wrap(err, "error in listing function ")
 	}
@@ -126,7 +126,7 @@ func (opts *CreateSubCommand) run(input cli.Input) error {
 		return nil
 	}
 
-	_, err := opts.Client().V1().KubeWatcher().Create(opts.watcher)
+	_, err := opts.Client().FissionClientSet.CoreV1().KubernetesWatchTriggers(opts.watcher.ObjectMeta.Namespace).Create(input.Context(), opts.watcher, metav1.CreateOptions{})
 	if err != nil {
 		return errors.Wrap(err, "error creating kubewatch")
 	}

pkg/fission-cli/cmd/kubewatch/delete.go

@@ -48,7 +48,7 @@ func (opts *DeleteSubCommand) do(input cli.Input) error {
 
 func (opts *DeleteSubCommand) complete(input cli.Input) (err error) {
 	opts.name = input.String(flagkey.KwName)
-	_, opts.namespace, err = util.GetResourceNamespace(input, flagkey.NamespaceTrigger)
+	_, opts.namespace, err = opts.GetResourceNamespace(input, flagkey.NamespaceTrigger)
 	if err != nil {
 		return errors.Wrap(err, "error in deleting kubewatch")
 	}
@@ -56,10 +56,7 @@ func (opts *DeleteSubCommand) complete(input cli.Input) (err error) {
 }
 
 func (opts *DeleteSubCommand) run(input cli.Input) error {
-	err := opts.Client().V1().KubeWatcher().Delete(&metav1.ObjectMeta{
-		Name:      opts.name,
-		Namespace: opts.namespace,
-	})
+	err := opts.Client().FissionClientSet.CoreV1().KubernetesWatchTriggers(opts.namespace).Delete(input.Context(), opts.name, metav1.DeleteOptions{})
 	if err != nil {
 		if input.Bool(flagkey.IgnoreNotFound) && util.IsNotFound(err) {
 			return nil

pkg/fission-cli/cmd/kubewatch/list.go

@@ -22,12 +22,12 @@ import (
 	"text/tabwriter"
 
 	"github.com/pkg/errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
 	v1 "github.com/fission/fission/pkg/apis/core/v1"
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
 	"github.com/fission/fission/pkg/fission-cli/cmd"
 	flagkey "github.com/fission/fission/pkg/fission-cli/flag/key"
-	"github.com/fission/fission/pkg/fission-cli/util"
 )
 
 type ListSubCommand struct {
@@ -48,7 +48,7 @@ func (opts *ListSubCommand) do(input cli.Input) error {
 }
 
 func (opts *ListSubCommand) complete(input cli.Input) (err error) {
-	_, opts.namespace, err = util.GetResourceNamespace(input, flagkey.NamespaceTrigger)
+	_, opts.namespace, err = opts.GetResourceNamespace(input, flagkey.NamespaceTrigger)
 	if err != nil {
 		return errors.Wrap(err, "error listing kubewatchers")
 	}
@@ -56,12 +56,12 @@ func (opts *ListSubCommand) complete(input cli.Input) (err error) {
 }
 
 func (opts *ListSubCommand) run(input cli.Input) (err error) {
-	var ws []v1.KubernetesWatchTrigger
+	var ws *v1.KubernetesWatchTriggerList
 	if input.Bool(flagkey.AllNamespaces) {
-		ws, err = opts.Client().V1().KubeWatcher().List("")
-	} else {
-		ws, err = opts.Client().V1().KubeWatcher().List(opts.namespace)
+		opts.namespace = metav1.NamespaceAll
 	}
+	ws, err = opts.Client().FissionClientSet.CoreV1().KubernetesWatchTriggers(opts.namespace).List(input.Context(), metav1.ListOptions{})
+
 	if err != nil {
 		return errors.Wrap(err, "error listing kubewatchers")
 	}
@@ -70,7 +70,7 @@ func (opts *ListSubCommand) run(input cli.Input) (err error) {
 
 	fmt.Fprintf(w, "%v\t%v\t%v\t%v\t%v\n",
 		"NAME", "NAMESPACE", "OBJTYPE", "LABELS", "FUNCTION_NAME")
-	for _, wa := range ws {
+	for _, wa := range ws.Items {
 		fmt.Fprintf(w, "%v\t%v\t%v\t%v\t%v\n",
 			wa.ObjectMeta.Name, wa.Spec.Namespace, wa.Spec.Type, wa.Spec.LabelSelector, wa.Spec.FunctionReference.Name)
 	}

pkg/fission-cli/cmd/mqtrigger/create.go

@@ -62,7 +62,7 @@ func (opts *CreateSubCommand) complete(input cli.Input) error {
 	}
 	fnName := input.String(flagkey.MqtFnName)
 
-	userProvidedNS, fnNamespace, err := util.GetResourceNamespace(input, flagkey.NamespaceFunction)
+	userProvidedNS, fnNamespace, err := opts.GetResourceNamespace(input, flagkey.NamespaceFunction)
 	if err != nil {
 		return errors.Wrap(err, "error in deleting function ")
 	}
@@ -151,7 +151,7 @@ func (opts *CreateSubCommand) complete(input cli.Input) error {
 				mqtName, fnName))
 		}
 	} else {
-		err = util.CheckFunctionExistence(opts.Client(), []string{fnName}, fnNamespace)
+		err = util.CheckFunctionExistence(input.Context(), opts.Client(), []string{fnName}, fnNamespace)
 		if err != nil {
 			return err
 		}
@@ -210,7 +210,7 @@ func (opts *CreateSubCommand) run(input cli.Input) error {
 		return nil
 	}
 
-	_, err := opts.Client().V1().MessageQueueTrigger().Create(opts.trigger)
+	_, err := opts.Client().FissionClientSet.CoreV1().MessageQueueTriggers(opts.trigger.ObjectMeta.Namespace).Create(input.Context(), opts.trigger, metav1.CreateOptions{})
 	if err != nil {
 		return errors.Wrap(err, "create message queue trigger")
 	}

pkg/fission-cli/cmd/mqtrigger/delete.go

@@ -20,12 +20,12 @@ import (
 	"fmt"
 
 	"github.com/pkg/errors"
+	kerrors "k8s.io/apimachinery/pkg/api/errors"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
 	"github.com/fission/fission/pkg/fission-cli/cmd"
 	flagkey "github.com/fission/fission/pkg/fission-cli/flag/key"
-	"github.com/fission/fission/pkg/fission-cli/util"
 )
 
 type DeleteSubCommand struct {
@@ -47,7 +47,7 @@ func (opts *DeleteSubCommand) do(input cli.Input) error {
 
 func (opts *DeleteSubCommand) complete(input cli.Input) (err error) {
 
-	_, namespace, err := util.GetResourceNamespace(input, flagkey.NamespaceTrigger)
+	_, namespace, err := opts.GetResourceNamespace(input, flagkey.NamespaceTrigger)
 	if err != nil {
 		return errors.Wrap(err, "error in deleting function ")
 	}
@@ -60,9 +60,9 @@ func (opts *DeleteSubCommand) complete(input cli.Input) (err error) {
 }
 
 func (opts *DeleteSubCommand) run(input cli.Input) error {
-	err := opts.Client().V1().MessageQueueTrigger().Delete(opts.metadata)
+	err := opts.Client().FissionClientSet.CoreV1().MessageQueueTriggers(opts.metadata.Namespace).Delete(input.Context(), opts.metadata.Name, metav1.DeleteOptions{})
 	if err != nil {
-		if input.Bool(flagkey.IgnoreNotFound) && util.IsNotFound(err) {
+		if input.Bool(flagkey.IgnoreNotFound) && kerrors.IsNotFound(err) {
 			return nil
 		}
 		return errors.Wrap(err, "error deleting message queue trigger")

pkg/fission-cli/cmd/mqtrigger/list.go

@@ -22,12 +22,11 @@ import (
 	"text/tabwriter"
 
 	"github.com/pkg/errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
-	v1 "github.com/fission/fission/pkg/apis/core/v1"
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
 	"github.com/fission/fission/pkg/fission-cli/cmd"
 	flagkey "github.com/fission/fission/pkg/fission-cli/flag/key"
-	"github.com/fission/fission/pkg/fission-cli/util"
 )
 
 type ListSubCommand struct {
@@ -48,7 +47,7 @@ func (opts *ListSubCommand) do(input cli.Input) error {
 }
 
 func (opts *ListSubCommand) complete(input cli.Input) (err error) {
-	_, opts.namespace, err = util.GetResourceNamespace(input, flagkey.NamespaceTrigger)
+	_, opts.namespace, err = opts.GetResourceNamespace(input, flagkey.NamespaceTrigger)
 	if err != nil {
 		return errors.Wrap(err, "error in deleting function ")
 	}
@@ -57,12 +56,11 @@ func (opts *ListSubCommand) complete(input cli.Input) (err error) {
 
 func (opts *ListSubCommand) run(input cli.Input) (err error) {
 
-	var mqts []v1.MessageQueueTrigger
 	if input.Bool(flagkey.AllNamespaces) {
-		mqts, err = opts.Client().V1().MessageQueueTrigger().List(input.String(flagkey.MqtMQType), "")
-	} else {
-		mqts, err = opts.Client().V1().MessageQueueTrigger().List(input.String(flagkey.MqtMQType), opts.namespace)
+		opts.namespace = metav1.NamespaceAll
 	}
+	mqts, err := opts.Client().FissionClientSet.CoreV1().MessageQueueTriggers(opts.namespace).List(input.Context(), metav1.ListOptions{})
+
 	if err != nil {
 		return errors.Wrap(err, "error listing message queue triggers")
 	}
@@ -71,7 +69,7 @@ func (opts *ListSubCommand) run(input cli.Input) (err error) {
 
 	fmt.Fprintf(w, "%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\n",
 		"NAME", "FUNCTION_NAME", "MESSAGE_QUEUE_TYPE", "TOPIC", "RESPONSE_TOPIC", "ERROR_TOPIC", "MAX_RETRIES", "PUB_MSG_CONTENT_TYPE", "NAMESPACE")
-	for _, mqt := range mqts {
+	for _, mqt := range mqts.Items {
 		fmt.Fprintf(w, "%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\t%v\n",
 			mqt.ObjectMeta.Name, mqt.Spec.FunctionReference.Name, mqt.Spec.MessageQueueType, mqt.Spec.Topic, mqt.Spec.ResponseTopic, mqt.Spec.ErrorTopic, mqt.Spec.MaxRetries, mqt.Spec.ContentType, mqt.ObjectMeta.Namespace)
 	}

pkg/fission-cli/cmd/mqtrigger/update.go

@@ -48,15 +48,12 @@ func (opts *UpdateSubCommand) do(input cli.Input) error {
 }
 
 func (opts *UpdateSubCommand) complete(input cli.Input) (err error) {
-	_, namespace, err := util.GetResourceNamespace(input, flagkey.NamespaceTrigger)
+	_, namespace, err := opts.GetResourceNamespace(input, flagkey.NamespaceTrigger)
 	if err != nil {
 		return errors.Wrap(err, "error in deleting function ")
 	}
 
-	mqt, err := opts.Client().V1().MessageQueueTrigger().Get(&metav1.ObjectMeta{
-		Name:      input.String(flagkey.MqtName),
-		Namespace: namespace,
-	})
+	mqt, err := opts.Client().FissionClientSet.CoreV1().MessageQueueTriggers(namespace).Get(input.Context(), input.String(flagkey.MqtName), metav1.GetOptions{})
 	if err != nil {
 		return errors.Wrap(err, "error getting message queue trigger")
 	}
@@ -100,7 +97,7 @@ func (opts *UpdateSubCommand) complete(input cli.Input) (err error) {
 	}
 	if len(fnName) > 0 {
 		functionList := []string{fnName}
-		err := util.CheckFunctionExistence(opts.Client(), functionList, namespace)
+		err := util.CheckFunctionExistence(input.Context(), opts.Client(), functionList, namespace)
 		if err != nil {
 			console.Warn(err.Error())
 		}
@@ -151,7 +148,7 @@ func (opts *UpdateSubCommand) complete(input cli.Input) (err error) {
 }
 
 func (opts *UpdateSubCommand) run(input cli.Input) error {
-	_, err := opts.Client().V1().MessageQueueTrigger().Update(opts.trigger)
+	_, err := opts.Client().FissionClientSet.CoreV1().MessageQueueTriggers(opts.trigger.ObjectMeta.Namespace).Update(input.Context(), opts.trigger, metav1.UpdateOptions{})
 	if err != nil {
 		return errors.Wrap(err, "error updating message queue trigger")
 	}

pkg/fission-cli/cmd/package/create.go

@@ -28,7 +28,6 @@ import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
 	fv1 "github.com/fission/fission/pkg/apis/core/v1"
-	"github.com/fission/fission/pkg/controller/client"
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
 	"github.com/fission/fission/pkg/fission-cli/cmd"
 	"github.com/fission/fission/pkg/fission-cli/cmd/spec"
@@ -65,7 +64,7 @@ func (opts *CreateSubCommand) run(input cli.Input) error {
 
 	envName := input.String(flagkey.PkgEnvironment)
 
-	userProvidedNS, pkgNamespace, err := util.GetResourceNamespace(input, flagkey.NamespacePackage)
+	userProvidedNS, pkgNamespace, err := opts.GetResourceNamespace(input, flagkey.NamespacePackage)
 	if err != nil {
 		return fv1.AggregateValidationErrors("Environment", err)
 	}
@@ -126,7 +125,7 @@ func (opts *CreateSubCommand) run(input cli.Input) error {
 }
 
 // TODO: get all necessary value from CLI input directly
-func CreatePackage(input cli.Input, client client.Interface, pkgName string, pkgNamespace string, envName string,
+func CreatePackage(input cli.Input, client cmd.Client, pkgName string, pkgNamespace string, envName string,
 	srcArchiveFiles []string, deployArchiveFiles []string, buildcmd string, specDir string, specFile string, noZip bool, userProvidedNS string) (*metav1.ObjectMeta, error) {
 
 	insecure := input.Bool(flagkey.PkgInsecure)
@@ -224,11 +223,12 @@ func CreatePackage(input cli.Input, client client.Interface, pkgName string, pkg
 		return &pkg.ObjectMeta, nil
 	} else {
 		pkg.ObjectMeta.Namespace = pkgNamespace
-		pkgMetadata, err := client.V1().Package().Create(pkg)
+
+		pkgMetadata, err := client.FissionClientSet.CoreV1().Packages(pkgNamespace).Create(input.Context(), pkg, metav1.CreateOptions{})
 		if err != nil {
 			return nil, errors.Wrap(err, "error creating package")
 		}
 		fmt.Printf("Package '%v' created\n", pkgMetadata.GetName())
-		return pkgMetadata, nil
+		return &pkgMetadata.ObjectMeta, nil
 	}
 }

pkg/fission-cli/cmd/package/delete.go

@@ -17,17 +17,17 @@ limitations under the License.
 package _package
 
 import (
+	"context"
 	"fmt"
 
 	"github.com/pkg/errors"
+	kerrors "k8s.io/apimachinery/pkg/api/errors"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
 	fv1 "github.com/fission/fission/pkg/apis/core/v1"
-	"github.com/fission/fission/pkg/controller/client"
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
 	"github.com/fission/fission/pkg/fission-cli/cmd"
 	flagkey "github.com/fission/fission/pkg/fission-cli/flag/key"
-	"github.com/fission/fission/pkg/fission-cli/util"
 )
 
 type DeleteSubCommand struct {
@@ -52,7 +52,7 @@ func (opts *DeleteSubCommand) do(input cli.Input) error {
 
 func (opts *DeleteSubCommand) complete(input cli.Input) (err error) {
 	opts.name = input.String(flagkey.PkgName)
-	_, opts.namespace, err = util.GetResourceNamespace(input, flagkey.NamespacePackage)
+	_, opts.namespace, err = opts.GetResourceNamespace(input, flagkey.NamespacePackage)
 	if err != nil {
 		return fv1.AggregateValidationErrors("Environment", err)
 	}
@@ -69,18 +69,15 @@ func (opts *DeleteSubCommand) complete(input cli.Input) (err error) {
 
 func (opts *DeleteSubCommand) run(input cli.Input) error {
 	if len(opts.name) != 0 {
-		_, err := opts.Client().V1().Package().Get(&metav1.ObjectMeta{
-			Namespace: opts.namespace,
-			Name:      opts.name,
-		})
+		_, err := opts.Client().FissionClientSet.CoreV1().Packages(opts.namespace).Get(input.Context(), opts.name, metav1.GetOptions{})
 		if err != nil {
-			if input.Bool(flagkey.IgnoreNotFound) && util.IsNotFound(err) {
+			if input.Bool(flagkey.IgnoreNotFound) && kerrors.IsNotFound(err) {
 				return nil
 			}
 			return errors.Wrap(err, "find package")
 		}
 
-		fnList, err := GetFunctionsByPackage(opts.Client(), opts.name, opts.namespace)
+		fnList, err := GetFunctionsByPackage(input.Context(), opts.Client(), opts.name, opts.namespace)
 		if err != nil {
 			return err
 		}
@@ -88,7 +85,7 @@ func (opts *DeleteSubCommand) run(input cli.Input) error {
 		if !opts.force && len(fnList) > 0 {
 			return errors.New("Package is used by at least one function, use -f to force delete")
 		}
-		err = deletePackage(opts.Client(), opts.name, opts.namespace)
+		err = deletePackage(input.Context(), opts.Client(), opts.name, opts.namespace)
 		if err != nil {
 			return err
 		}
@@ -97,7 +94,7 @@ func (opts *DeleteSubCommand) run(input cli.Input) error {
 
 	// TODO improve list speed when --orphan
 	if opts.deleteOrphans {
-		err := deleteOrphanPkgs(opts.Client(), opts.namespace)
+		err := deleteOrphanPkgs(input.Context(), opts.Client(), opts.namespace)
 		if err != nil {
 			return errors.Wrap(err, "deleting orphan packages")
 		}
@@ -107,20 +104,20 @@ func (opts *DeleteSubCommand) run(input cli.Input) error {
 	return nil
 }
 
-func deleteOrphanPkgs(client client.Interface, pkgNamespace string) error {
-	pkgList, err := client.V1().Package().List(pkgNamespace)
+func deleteOrphanPkgs(ctx context.Context, client cmd.Client, pkgNamespace string) error {
+	pkgList, err := client.FissionClientSet.CoreV1().Packages(pkgNamespace).List(ctx, metav1.ListOptions{})
 	if err != nil {
 		return err
 	}
 
 	// range through all packages and find out the ones not referenced by any function
-	for _, pkg := range pkgList {
-		fnList, err := GetFunctionsByPackage(client, pkg.ObjectMeta.Name, pkgNamespace)
+	for _, pkg := range pkgList.Items {
+		fnList, err := GetFunctionsByPackage(ctx, client, pkg.ObjectMeta.Name, pkgNamespace)
 		if err != nil {
 			return errors.Wrap(err, fmt.Sprintf("get functions sharing package %s", pkg.ObjectMeta.Name))
 		}
 		if len(fnList) == 0 {
-			err = deletePackage(client, pkg.ObjectMeta.Name, pkgNamespace)
+			err = deletePackage(ctx, client, pkg.ObjectMeta.Name, pkgNamespace)
 			if err != nil {
 				return err
 			}
@@ -129,9 +126,6 @@ func deleteOrphanPkgs(client client.Interface, pkgNamespace string) error {
 	return nil
 }
 
-func deletePackage(client client.Interface, pkgName string, pkgNamespace string) error {
-	return client.V1().Package().Delete(&metav1.ObjectMeta{
-		Namespace: pkgNamespace,
-		Name:      pkgName,
-	})
+func deletePackage(ctx context.Context, client cmd.Client, pkgName string, pkgNamespace string) error {
+	return client.FissionClientSet.CoreV1().Packages(pkgNamespace).Delete(ctx, pkgName, metav1.DeleteOptions{})
 }

pkg/fission-cli/cmd/package/get.go

@@ -21,6 +21,7 @@ import (
 	"io"
 	"os"
 
+	"github.com/pkg/errors"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
 	fv1 "github.com/fission/fission/pkg/apis/core/v1"
@@ -28,7 +29,6 @@ import (
 	"github.com/fission/fission/pkg/fission-cli/cmd"
 	pkgutil "github.com/fission/fission/pkg/fission-cli/cmd/package/util"
 	flagkey "github.com/fission/fission/pkg/fission-cli/flag/key"
-	"github.com/fission/fission/pkg/fission-cli/util"
 )
 
 const (
@@ -61,7 +61,7 @@ func (opts *GetSubCommand) do(input cli.Input) error {
 
 func (opts *GetSubCommand) complete(input cli.Input) (err error) {
 	opts.name = input.String(flagkey.PkgName)
-	_, opts.namespace, err = util.GetResourceNamespace(input, flagkey.NamespacePackage)
+	_, opts.namespace, err = opts.GetResourceNamespace(input, flagkey.NamespacePackage)
 	if err != nil {
 		return fv1.AggregateValidationErrors("Environment", err)
 	}
@@ -70,10 +70,8 @@ func (opts *GetSubCommand) complete(input cli.Input) (err error) {
 }
 
 func (opts *GetSubCommand) run(input cli.Input) error {
-	pkg, err := opts.Client().V1().Package().Get(&metav1.ObjectMeta{
-		Namespace: opts.namespace,
-		Name:      opts.name,
-	})
+
+	pkg, err := opts.Client().FissionClientSet.CoreV1().Packages(opts.namespace).Get(input.Context(), opts.name, metav1.GetOptions{})
 	if err != nil {
 		return err
 	}
@@ -87,10 +85,12 @@ func (opts *GetSubCommand) run(input cli.Input) error {
 	if pkg.Spec.Deployment.Type == fv1.ArchiveTypeLiteral {
 		reader = bytes.NewReader(archive.Literal)
 	} else if pkg.Spec.Deployment.Type == fv1.ArchiveTypeUrl {
-		readCloser, err := pkgutil.DownloadStoragesvcURL(opts.Client(), archive.URL)
+
+		readCloser, err := pkgutil.DownloadStrorageURL(input.Context(), opts.Client(), archive.URL)
 		if err != nil {
-			return err
+			return errors.Wrapf(err, "error downloading from storage service url: %s", archive.URL)
 		}
+
 		defer readCloser.Close()
 		reader = readCloser
 	}

pkg/fission-cli/cmd/package/info.go

@@ -27,7 +27,6 @@ import (
 	"github.com/fission/fission/pkg/fission-cli/cmd"
 	pkgutil "github.com/fission/fission/pkg/fission-cli/cmd/package/util"
 	flagkey "github.com/fission/fission/pkg/fission-cli/flag/key"
-	"github.com/fission/fission/pkg/fission-cli/util"
 )
 
 type InfoSubCommand struct {
@@ -51,7 +50,7 @@ func (opts *InfoSubCommand) do(input cli.Input) error {
 func (opts *InfoSubCommand) complete(input cli.Input) (err error) {
 	opts.name = input.String(flagkey.PkgName)
 
-	_, opts.namespace, err = util.GetResourceNamespace(input, flagkey.NamespacePackage)
+	_, opts.namespace, err = opts.GetResourceNamespace(input, flagkey.NamespacePackage)
 	if err != nil {
 		return fv1.AggregateValidationErrors("Environment", err)
 	}
@@ -59,10 +58,11 @@ func (opts *InfoSubCommand) complete(input cli.Input) (err error) {
 }
 
 func (opts *InfoSubCommand) run(input cli.Input) error {
-	pkg, err := opts.Client().V1().Package().Get(&metav1.ObjectMeta{
-		Namespace: opts.namespace,
-		Name:      opts.name,
-	})
+	pkg, err := opts.Client().FissionClientSet.CoreV1().Packages(opts.namespace).Get(input.Context(), opts.name, metav1.GetOptions{})
+	if err != nil {
+		return err
+	}
+
 	if err != nil {
 		return errors.Wrapf(err, "error finding package %s", opts.name)
 	}

pkg/fission-cli/cmd/package/list.go

@@ -24,12 +24,12 @@ import (
 	"time"
 
 	"github.com/pkg/errors"
+	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
 	fv1 "github.com/fission/fission/pkg/apis/core/v1"
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
 	"github.com/fission/fission/pkg/fission-cli/cmd"
 	flagkey "github.com/fission/fission/pkg/fission-cli/flag/key"
-	"github.com/fission/fission/pkg/fission-cli/util"
 )
 
 type ListSubCommand struct {
@@ -55,7 +55,7 @@ func (opts *ListSubCommand) complete(input cli.Input) (err error) {
 	// option for the user to list all orphan packages (not referenced by any function)
 	opts.listOrphans = input.Bool(flagkey.PkgOrphan)
 	opts.status = input.String(flagkey.PkgStatus)
-	_, opts.pkgNamespace, err = util.GetResourceNamespace(input, flagkey.NamespacePackage)
+	_, opts.pkgNamespace, err = opts.GetResourceNamespace(input, flagkey.NamespacePackage)
 	if err != nil {
 		return fv1.AggregateValidationErrors("Environment", err)
 	}
@@ -64,29 +64,28 @@ func (opts *ListSubCommand) complete(input cli.Input) (err error) {
 
 func (opts *ListSubCommand) run(input cli.Input) (err error) {
 
-	var pkgList []fv1.Package
 	if input.Bool(flagkey.AllNamespaces) {
-		pkgList, err = opts.Client().V1().Package().List("")
-	} else {
-		pkgList, err = opts.Client().V1().Package().List(opts.pkgNamespace)
+		opts.pkgNamespace = v1.NamespaceAll
 	}
+	pkgList, err := opts.Client().FissionClientSet.CoreV1().Packages(opts.pkgNamespace).List(input.Context(), v1.ListOptions{})
+
 	if err != nil {
 		return err
 	}
 
 	// sort the package list by lastUpdatedTimestamp
-	sort.Slice(pkgList, func(i, j int) bool {
-		return pkgList[i].Status.LastUpdateTimestamp.After(pkgList[j].Status.LastUpdateTimestamp.Time)
+	sort.Slice(pkgList.Items, func(i, j int) bool {
+		return pkgList.Items[i].Status.LastUpdateTimestamp.After(pkgList.Items[j].Status.LastUpdateTimestamp.Time)
 	})
 
 	w := tabwriter.NewWriter(os.Stdout, 0, 0, 1, ' ', 0)
 	fmt.Fprintf(w, "%v\t%v\t%v\t%v\t%v\n", "NAME", "BUILD_STATUS", "ENV", "LASTUPDATEDAT", "NAMESPACE")
 
-	for _, pkg := range pkgList {
+	for _, pkg := range pkgList.Items {
 		show := true
 		// TODO improve list speed when --orphan
 		if opts.listOrphans {
-			fnList, err := GetFunctionsByPackage(opts.Client(), pkg.ObjectMeta.Name, pkg.ObjectMeta.Namespace)
+			fnList, err := GetFunctionsByPackage(input.Context(), opts.Client(), pkg.ObjectMeta.Name, pkg.ObjectMeta.Namespace)
 			if err != nil {
 				return errors.Wrap(err, fmt.Sprintf("get functions sharing package %s", pkg.ObjectMeta.Name))
 			}

pkg/fission-cli/cmd/package/package.go

@@ -17,6 +17,7 @@ limitations under the License.
 package _package
 
 import (
+	"context"
 	"fmt"
 	"net/http"
 	"os"
@@ -27,10 +28,11 @@ import (
 	"github.com/hashicorp/go-multierror"
 	"github.com/pkg/errors"
 	uuid "github.com/satori/go.uuid"
+	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
 	fv1 "github.com/fission/fission/pkg/apis/core/v1"
-	"github.com/fission/fission/pkg/controller/client"
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
+	"github.com/fission/fission/pkg/fission-cli/cmd"
 	pkgutil "github.com/fission/fission/pkg/fission-cli/cmd/package/util"
 	"github.com/fission/fission/pkg/fission-cli/cmd/spec"
 	spectypes "github.com/fission/fission/pkg/fission-cli/cmd/spec/types"
@@ -44,7 +46,7 @@ import (
 // create an archive upload spec in the specs directory; otherwise
 // upload the archive using client.  noZip avoids zipping the
 // includeFiles, but is ignored if there's more than one includeFile.
-func CreateArchive(client client.Interface, input cli.Input, includeFiles []string, noZip bool, insecure bool, checksum string, specDir string, specFile string) (*fv1.Archive, error) {
+func CreateArchive(client cmd.Client, input cli.Input, includeFiles []string, noZip bool, insecure bool, checksum string, specDir string, specFile string) (*fv1.Archive, error) {
 	// get root dir
 	var rootDir string
 	var err error
@@ -251,13 +253,13 @@ func archiveName(givenNameHint string, includedFiles []string) string {
 	return fmt.Sprintf("%v-%v", util.KubifyName(includedFiles[0]), uniuri.NewLen(4))
 }
 
-func GetFunctionsByPackage(client client.Interface, pkgName, pkgNamespace string) ([]fv1.Function, error) {
-	fnList, err := client.V1().Function().List(pkgNamespace)
+func GetFunctionsByPackage(ctx context.Context, client cmd.Client, pkgName, pkgNamespace string) ([]fv1.Function, error) {
+	fnList, err := client.FissionClientSet.CoreV1().Functions(pkgNamespace).List(ctx, v1.ListOptions{})
 	if err != nil {
 		return nil, err
 	}
 	fns := []fv1.Function{}
-	for _, fn := range fnList {
+	for _, fn := range fnList.Items {
 		if fn.Spec.Package.PackageRef.Name == pkgName {
 			fns = append(fns, fn)
 		}

pkg/fission-cli/cmd/package/rebuild.go

@@ -26,7 +26,6 @@ import (
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
 	"github.com/fission/fission/pkg/fission-cli/cmd"
 	flagkey "github.com/fission/fission/pkg/fission-cli/flag/key"
-	"github.com/fission/fission/pkg/fission-cli/util"
 )
 
 type RebuildSubCommand struct {
@@ -49,7 +48,7 @@ func (opts *RebuildSubCommand) do(input cli.Input) error {
 
 func (opts *RebuildSubCommand) complete(input cli.Input) (err error) {
 	opts.name = input.String(flagkey.PkgName)
-	_, opts.namespace, err = util.GetResourceNamespace(input, flagkey.NamespacePackage)
+	_, opts.namespace, err = opts.GetResourceNamespace(input, flagkey.NamespacePackage)
 	if err != nil {
 		return fv1.AggregateValidationErrors("Environment", err)
 	}
@@ -57,10 +56,10 @@ func (opts *RebuildSubCommand) complete(input cli.Input) (err error) {
 }
 
 func (opts *RebuildSubCommand) run(input cli.Input) error {
-	pkg, err := opts.Client().V1().Package().Get(&metav1.ObjectMeta{
-		Name:      opts.name,
-		Namespace: opts.namespace,
-	})
+	pkg, err := opts.Client().FissionClientSet.CoreV1().Packages(opts.namespace).Get(input.Context(), opts.name, metav1.GetOptions{})
+	if err != nil {
+		return err
+	}
 	if err != nil {
 		return errors.Wrap(err, "find package")
 	}
@@ -70,7 +69,7 @@ func (opts *RebuildSubCommand) run(input cli.Input) error {
 			pkg.ObjectMeta.Name, fv1.BuildStatusFailed))
 	}
 
-	_, err = updatePackageStatus(opts.Client(), pkg, fv1.BuildStatusPending)
+	_, err = updatePackageStatus(input.Context(), opts.Client(), pkg, fv1.BuildStatusPending)
 	if err != nil {
 		return errors.Wrap(err, "update package status")
 	}

pkg/fission-cli/cmd/package/update.go

@@ -17,6 +17,7 @@ limitations under the License.
 package _package
 
 import (
+	"context"
 	"fmt"
 	"time"
 
@@ -25,11 +26,9 @@ import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
 	fv1 "github.com/fission/fission/pkg/apis/core/v1"
-	"github.com/fission/fission/pkg/controller/client"
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
 	"github.com/fission/fission/pkg/fission-cli/cmd"
 	flagkey "github.com/fission/fission/pkg/fission-cli/flag/key"
-	"github.com/fission/fission/pkg/fission-cli/util"
 )
 
 type UpdateSubCommand struct {
@@ -53,7 +52,7 @@ func (opts *UpdateSubCommand) do(input cli.Input) error {
 
 func (opts *UpdateSubCommand) complete(input cli.Input) (err error) {
 	opts.pkgName = input.String(flagkey.PkgName)
-	_, opts.pkgNamespace, err = util.GetResourceNamespace(input, flagkey.NamespacePackage)
+	_, opts.pkgNamespace, err = opts.GetResourceNamespace(input, flagkey.NamespacePackage)
 	if err != nil {
 		return fv1.AggregateValidationErrors("Environment", err)
 	}
@@ -62,17 +61,17 @@ func (opts *UpdateSubCommand) complete(input cli.Input) (err error) {
 }
 
 func (opts *UpdateSubCommand) run(input cli.Input) error {
-	pkg, err := opts.Client().V1().Package().Get(&metav1.ObjectMeta{
-		Namespace: opts.pkgNamespace,
-		Name:      opts.pkgName,
-	})
+	pkg, err := opts.Client().FissionClientSet.CoreV1().Packages(opts.pkgNamespace).Get(input.Context(), opts.pkgName, metav1.GetOptions{})
+	if err != nil {
+		return err
+	}
 	if err != nil {
 		return errors.Wrap(err, "get package")
 	}
 
 	forceUpdate := input.Bool(flagkey.PkgForce)
 
-	fnList, err := GetFunctionsByPackage(opts.Client(), pkg.ObjectMeta.Name, pkg.ObjectMeta.Namespace)
+	fnList, err := GetFunctionsByPackage(input.Context(), opts.Client(), pkg.ObjectMeta.Name, pkg.ObjectMeta.Namespace)
 	if err != nil {
 		return errors.Wrap(err, "error getting function list")
 	}
@@ -87,7 +86,7 @@ func (opts *UpdateSubCommand) run(input cli.Input) error {
 	}
 
 	if pkg.ObjectMeta.ResourceVersion != newPkgMeta.ResourceVersion {
-		err = UpdateFunctionPackageResourceVersion(opts.Client(), newPkgMeta, fnList...)
+		err = UpdateFunctionPackageResourceVersion(input.Context(), opts.Client(), newPkgMeta, fnList...)
 		if err != nil {
 			return errors.Wrap(err, "error updating function package reference resource version")
 		}
@@ -96,7 +95,7 @@ func (opts *UpdateSubCommand) run(input cli.Input) error {
 	return nil
 }
 
-func UpdatePackage(input cli.Input, client client.Interface, pkg *fv1.Package) (*metav1.ObjectMeta, error) {
+func UpdatePackage(input cli.Input, client cmd.Client, pkg *fv1.Package) (*metav1.ObjectMeta, error) {
 	envName := input.String(flagkey.PkgEnvironment)
 	srcArchiveFiles := input.StringSlice(flagkey.PkgSrcArchive)
 	deployArchiveFiles := input.StringSlice(flagkey.PkgDeployArchive)
@@ -175,23 +174,23 @@ func UpdatePackage(input cli.Input, client client.Interface, pkg *fv1.Package) (
 		}
 	}
 
-	newPkgMeta, err := client.V1().Package().Update(pkg)
+	newPkgMeta, err := client.FissionClientSet.CoreV1().Packages(pkg.ObjectMeta.Namespace).Update(input.Context(), pkg, metav1.UpdateOptions{})
 	if err != nil {
 		return nil, errors.Wrap(err, "update package")
 	}
 
 	fmt.Printf("Package '%v' updated\n", newPkgMeta.GetName())
 
-	return newPkgMeta, err
+	return &newPkgMeta.ObjectMeta, err
 }
 
-func UpdateFunctionPackageResourceVersion(client client.Interface, pkgMeta *metav1.ObjectMeta, fnList ...fv1.Function) error {
+func UpdateFunctionPackageResourceVersion(ctx context.Context, client cmd.Client, pkgMeta *metav1.ObjectMeta, fnList ...fv1.Function) error {
 	errs := &multierror.Error{}
 
 	// update resource version of package reference of functions that shared the same package
 	for _, fn := range fnList {
 		fn.Spec.Package.PackageRef.ResourceVersion = pkgMeta.ResourceVersion
-		_, err := client.V1().Function().Update(&fn)
+		_, err := client.FissionClientSet.CoreV1().Functions(fn.ObjectMeta.Namespace).Update(ctx, &fn, metav1.UpdateOptions{})
 		if err != nil {
 			errs = multierror.Append(errs, errors.Wrapf(err, "error updating package resource version of function '%v'", fn.ObjectMeta.Name))
 		}
@@ -200,15 +199,15 @@ func UpdateFunctionPackageResourceVersion(client client.Interface, pkgMeta *meta
 	return errs.ErrorOrNil()
 }
 
-func updatePackageStatus(client client.Interface, pkg *fv1.Package, status fv1.BuildStatus) (*metav1.ObjectMeta, error) {
+func updatePackageStatus(ctx context.Context, client cmd.Client, pkg *fv1.Package, status fv1.BuildStatus) (*metav1.ObjectMeta, error) {
 	switch status {
 	case fv1.BuildStatusNone, fv1.BuildStatusPending, fv1.BuildStatusRunning, fv1.BuildStatusSucceeded, fv1.CanaryConfigStatusAborted:
 		pkg.Status = fv1.PackageStatus{
 			BuildStatus:         status,
 			LastUpdateTimestamp: metav1.Time{Time: time.Now().UTC()},
 		}
-		pkg, err := client.V1().Package().Update(pkg)
-		return pkg, err
+		pkg, err := client.FissionClientSet.CoreV1().Packages(pkg.Namespace).Update(ctx, pkg, metav1.UpdateOptions{})
+		return &pkg.ObjectMeta, err
 	}
 	return nil, errors.New("unknown package status")
 }

pkg/fission-cli/cmd/package/util/util.go

@@ -31,11 +31,13 @@ import (
 
 	fv1 "github.com/fission/fission/pkg/apis/core/v1"
 	"github.com/fission/fission/pkg/controller/client"
+	"github.com/fission/fission/pkg/fission-cli/cmd"
+	"github.com/fission/fission/pkg/fission-cli/util"
 	storageSvcClient "github.com/fission/fission/pkg/storagesvc/client"
 	"github.com/fission/fission/pkg/utils"
 )
 
-func UploadArchiveFile(ctx context.Context, client client.Interface, fileName string) (*fv1.Archive, error) {
+func UploadArchiveFile(ctx context.Context, client cmd.Client, fileName string) (*fv1.Archive, error) {
 	var archive fv1.Archive
 
 	size, err := utils.FileSize(fileName)
@@ -50,26 +52,24 @@ func UploadArchiveFile(ctx context.Context, client client.Interface, fileName st
 			return nil, err
 		}
 	} else {
-		u := strings.TrimSuffix(client.ServerURL(), "/") + "/proxy/storage"
-		ssClient := storageSvcClient.MakeClient(u)
 
+		storagesvcURL, err := util.GetStorageURL(ctx, client)
+		if err != nil {
+			return nil, errors.Wrapf(err, "error getting fission storage service URL")
+		}
+
+		storageClient := storageSvcClient.MakeClient(storagesvcURL.String())
 		// TODO add a progress bar
-		id, err := ssClient.Upload(ctx, fileName, nil)
+		id, err := storageClient.Upload(ctx, fileName, nil)
 		if err != nil {
-			return nil, errors.Wrapf(err, "error uploading file %v", fileName)
+			return nil, errors.Wrapf(err, "error uploading to fission storage service")
 		}
 
-		storageSvc, err := client.V1().Misc().GetSvcURL("application=fission-storage")
-		storageSvcURL := "http://" + storageSvc
+		archiveURL, err := getArchiveURL(ctx, client, id, storagesvcURL)
 		if err != nil {
-			return nil, errors.Wrapf(err, "error getting fission storage service name")
+			return nil, errors.Wrapf(err, "could not get URL of archive")
 		}
 
-		// We make a new client with actual URL of Storage service so that the URL is not
-		// pointing to 127.0.0.1 i.e. proxy. DON'T reuse previous ssClient
-		pkgClient := storageSvcClient.MakeClient(storageSvcURL)
-		archiveURL := pkgClient.GetUrl(id)
-
 		archive.Type = fv1.ArchiveTypeUrl
 		archive.URL = archiveURL
 
@@ -84,6 +84,42 @@ func UploadArchiveFile(ctx context.Context, client client.Interface, fileName st
 	return &archive, nil
 }
 
+func getArchiveURL(ctx context.Context, client cmd.Client, archiveID string, serverURL *url.URL) (archiveURL string, err error) {
+	relativeURL, _ := url.Parse(util.FISSION_STORAGE_URI)
+
+	queryString := relativeURL.Query()
+	queryString.Set("id", archiveID)
+	relativeURL.RawQuery = queryString.Encode()
+
+	storageAccessURL := serverURL.ResolveReference(relativeURL)
+
+	resp, err := http.Head(storageAccessURL.String())
+	if err != nil {
+		return "", err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		return "", fmt.Errorf("error getting URL. Exited with Status:  %s", resp.Status)
+	}
+
+	storageType := resp.Header.Get("X-FISSION-STORAGETYPE")
+
+	if storageType == "local" {
+		storageSvc, err := util.GetSvcName(ctx, client.KubernetesClient, "fission-storage")
+		if err != nil {
+			return "", err
+		}
+		storagesvcURL := "http://" + storageSvc
+		client := storageSvcClient.MakeClient(storagesvcURL)
+		return client.GetUrl(archiveID), nil
+	} else if storageType == "s3" {
+		storageBucket := resp.Header.Get("X-FISSION-BUCKET")
+		s3url := fmt.Sprintf("https://%s.s3.amazonaws.com/%s", storageBucket, archiveID)
+		return s3url, nil
+	}
+	return "", nil
+}
 func GetContents(filePath string) ([]byte, error) {
 	code, err := os.ReadFile(filePath)
 	if err != nil {
@@ -133,6 +169,42 @@ func DownloadURL(fileUrl string) (io.ReadCloser, error) {
 	return resp.Body, nil
 }
 
+func DownloadStrorageURL(ctx context.Context, client cmd.Client, fileUrl string) (io.ReadCloser, error) {
+	var resp *http.Response
+	storageSvc, err := util.GetSvcName(ctx, client.KubernetesClient, "fission-storage")
+	if err != nil {
+		return nil, err
+	}
+
+	if strings.HasPrefix(fileUrl, "http://"+storageSvc+"/v1/archive?id=") {
+		url, err := url.Parse(fileUrl)
+		if err != nil {
+			return nil, err
+		}
+		id := url.Query().Get("id")
+		storageAccessURL, err := util.GetStorageURL(ctx, client)
+		if err != nil {
+			return nil, err
+		}
+
+		client := storageSvcClient.MakeClient(storageAccessURL.String())
+		resp, err = client.GetFile(ctx, id)
+		if err != nil {
+			return nil, err
+		}
+	} else {
+		resp, err = http.Get(fileUrl)
+	}
+
+	if err != nil {
+		return nil, err
+	}
+	if resp.StatusCode != http.StatusOK {
+		return nil, fmt.Errorf("%v - HTTP response returned non 200 status", resp.StatusCode)
+	}
+	return resp.Body, nil
+}
+
 func WriteArchiveToFile(fileName string, reader io.Reader) error {
 	tmpDir, err := utils.GetTempDir()
 	if err != nil {

pkg/fission-cli/cmd/spec/apply.go

@@ -32,7 +32,6 @@ import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
 	fv1 "github.com/fission/fission/pkg/apis/core/v1"
-	"github.com/fission/fission/pkg/controller/client"
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
 	"github.com/fission/fission/pkg/fission-cli/cmd"
 	pkgutil "github.com/fission/fission/pkg/fission-cli/cmd/package/util"
@@ -71,7 +70,7 @@ func (opts *ApplySubCommand) do(input cli.Input) error {
 func (opts *ApplySubCommand) insertNamespace(input cli.Input, fr *FissionResources) error {
 
 	result := utils.MultiErrorWithFormat()
-	_, currentNS, err := util.GetResourceNamespace(input, flagkey.NamespaceEnvironment)
+	_, currentNS, err := opts.GetResourceNamespace(input, flagkey.NamespaceEnvironment)
 	if err != nil {
 		return fv1.AggregateValidationErrors("Environment", err)
 	}
@@ -196,7 +195,7 @@ func (opts *ApplySubCommand) run(input cli.Input) error {
 		}
 
 		// make changes to the cluster based on the specs
-		pkgMetas, as, err := applyResources(input.Context(), opts.Client(), specDir, fr, deleteResources, input.Bool(flagkey.SpecAllowConflicts))
+		pkgMetas, as, err := applyResources(input, opts.Client(), specDir, fr, deleteResources, input.Bool(flagkey.SpecAllowConflicts))
 		if err != nil {
 			return errors.Wrap(err, "error applying specs")
 		}
@@ -349,7 +348,7 @@ func pluralize(num int, word string) string {
 }
 
 // applyArchives figures out the set of archives that need to be uploaded, and uploads them.
-func applyArchives(ctx context.Context, fclient client.Interface, specDir string, fr *FissionResources) error {
+func applyArchives(input cli.Input, fclient cmd.Client, specDir string, fr *FissionResources) error {
 
 	// archive:// URL -> archive map.
 	archiveFiles := make(map[string]fv1.Archive)
@@ -369,11 +368,11 @@ func applyArchives(ctx context.Context, fclient client.Interface, specDir string
 
 	// get list of packages, make content-indexed map of available archives
 	availableArchives := make(map[string]string) // (sha256 -> url)
-	pkgs, err := fclient.V1().Package().List(metav1.NamespaceAll)
+	pkgs, err := fclient.FissionClientSet.CoreV1().Packages(metav1.NamespaceAll).List(input.Context(), metav1.ListOptions{})
 	if err != nil {
 		return err
 	}
-	for _, pkg := range pkgs {
+	for _, pkg := range pkgs.Items {
 		for _, ar := range []fv1.Archive{pkg.Spec.Source, pkg.Spec.Deployment} {
 			if ar.Type == fv1.ArchiveTypeUrl && len(ar.URL) > 0 {
 				availableArchives[ar.Checksum.Sum] = ar.URL
@@ -395,7 +394,7 @@ func applyArchives(ctx context.Context, fclient client.Interface, specDir string
 			// doesn't exist, upload
 			fmt.Printf("uploading archive %v\n", name)
 			// ar.URL is actually a local filename at this stage
-			uploadedAr, err := pkgutil.UploadArchiveFile(ctx, fclient, ar.URL)
+			uploadedAr, err := pkgutil.UploadArchiveFile(input.Context(), fclient, ar.URL)
 			if err != nil {
 				return err
 			}
@@ -422,23 +421,23 @@ func applyArchives(ctx context.Context, fclient client.Interface, specDir string
 }
 
 // applyResources applies the given set of fission resources.
-func applyResources(ctx context.Context, fclient client.Interface, specDir string, fr *FissionResources, delete bool, specAllowConflicts bool) (map[string]metav1.ObjectMeta, map[string]ResourceApplyStatus, error) {
+func applyResources(input cli.Input, fclient cmd.Client, specDir string, fr *FissionResources, delete bool, specAllowConflicts bool) (map[string]metav1.ObjectMeta, map[string]ResourceApplyStatus, error) {
 
 	applyStatus := make(map[string]ResourceApplyStatus)
 
 	// upload archives that need to be uploaded. Changes archive references in fr.Packages.
-	err := applyArchives(ctx, fclient, specDir, fr)
+	err := applyArchives(input, fclient, specDir, fr)
 	if err != nil {
 		return nil, nil, err
 	}
 
-	_, ras, err := applyEnvironments(fclient, fr, delete, specAllowConflicts)
+	_, ras, err := applyEnvironments(input.Context(), fclient, fr, delete, specAllowConflicts)
 	if err != nil {
 		return nil, nil, errors.Wrap(err, "environment apply failed")
 	}
 	applyStatus["environment"] = *ras
 
-	pkgMeta, ras, err := applyPackages(fclient, fr, delete, specAllowConflicts)
+	pkgMeta, ras, err := applyPackages(input.Context(), fclient, fr, delete, specAllowConflicts)
 	if err != nil {
 		return nil, nil, errors.Wrap(err, "package apply failed")
 	}
@@ -467,31 +466,31 @@ func applyResources(ctx context.Context, fclient client.Interface, specDir strin
 		fr.Functions[i].Spec.Package.PackageRef.ResourceVersion = m.ResourceVersion
 	}
 
-	_, ras, err = applyFunctions(fclient, fr, delete, specAllowConflicts)
+	_, ras, err = applyFunctions(input.Context(), fclient, fr, delete, specAllowConflicts)
 	if err != nil {
 		return nil, nil, errors.Wrap(err, "function apply failed")
 	}
 	applyStatus["function"] = *ras
 
-	_, ras, err = applyHTTPTriggers(fclient, fr, delete, specAllowConflicts)
+	_, ras, err = applyHTTPTriggers(input.Context(), fclient, fr, delete, specAllowConflicts)
 	if err != nil {
 		return nil, nil, errors.Wrap(err, "HTTPTrigger apply failed")
 	}
 	applyStatus["HTTPTrigger"] = *ras
 
-	_, ras, err = applyKubernetesWatchTriggers(fclient, fr, delete, specAllowConflicts)
+	_, ras, err = applyKubernetesWatchTriggers(input.Context(), fclient, fr, delete, specAllowConflicts)
 	if err != nil {
 		return nil, nil, errors.Wrap(err, "KubernetesWatchTrigger apply failed")
 	}
 	applyStatus["KubernetesWatchTrigger"] = *ras
 
-	_, ras, err = applyTimeTriggers(fclient, fr, delete, specAllowConflicts)
+	_, ras, err = applyTimeTriggers(input.Context(), fclient, fr, delete, specAllowConflicts)
 	if err != nil {
 		return nil, nil, errors.Wrap(err, "TimeTrigger apply failed")
 	}
 	applyStatus["TimeTrigger"] = *ras
 
-	_, ras, err = applyMessageQueueTriggers(fclient, fr, delete, specAllowConflicts)
+	_, ras, err = applyMessageQueueTriggers(input.Context(), fclient, fr, delete, specAllowConflicts)
 	if err != nil {
 		return nil, nil, errors.Wrap(err, "MessageQueueTrigger apply failed")
 	}
@@ -626,7 +625,7 @@ func hasDeploymentConfig(m *metav1.ObjectMeta, fr *FissionResources) bool {
 	return false
 }
 
-func waitForPackageBuild(fclient client.Interface, pkg *fv1.Package) (*fv1.Package, error) {
+func waitForPackageBuild(ctx context.Context, fclient cmd.Client, pkg *fv1.Package) (*fv1.Package, error) {
 	start := time.Now()
 	for {
 		if pkg.Status.BuildStatus != fv1.BuildStatusRunning {
@@ -640,16 +639,16 @@ func waitForPackageBuild(fclient client.Interface, pkg *fv1.Package) (*fv1.Packa
 		time.Sleep(time.Second)
 
 		var err error
-		pkg, err = fclient.V1().Package().Get(&pkg.ObjectMeta)
+		pkg, err = fclient.FissionClientSet.CoreV1().Packages(pkg.ObjectMeta.Namespace).Get(ctx, pkg.ObjectMeta.Name, metav1.GetOptions{})
 		if err != nil {
 			return nil, err
 		}
 	}
 }
 
-func applyPackages(fclient client.Interface, fr *FissionResources, delete bool, specAllowConflicts bool) (map[string]metav1.ObjectMeta, *ResourceApplyStatus, error) {
+func applyPackages(ctx context.Context, fclient cmd.Client, fr *FissionResources, delete bool, specAllowConflicts bool) (map[string]metav1.ObjectMeta, *ResourceApplyStatus, error) {
 	// get list
-	allObjs, err := fclient.V1().Package().List(metav1.NamespaceAll)
+	allObjs, err := fclient.FissionClientSet.CoreV1().Packages(metav1.NamespaceAll).List(ctx, metav1.ListOptions{})
 	if err != nil {
 		return nil, nil, err
 	}
@@ -657,9 +656,9 @@ func applyPackages(fclient client.Interface, fr *FissionResources, delete bool,
 	// filter
 	objs := make([]fv1.Package, 0)
 	if specAllowConflicts {
-		objs = allObjs
+		objs = allObjs.Items
 	} else {
-		for _, o := range allObjs {
+		for _, o := range allObjs.Items {
 			if hasDeploymentConfig(&o.ObjectMeta, fr) {
 				objs = append(objs, o)
 			}
@@ -711,7 +710,7 @@ func applyPackages(fclient client.Interface, fr *FissionResources, delete bool,
 				// We may be racing against the package builder to update the
 				// package (a previous version might have been getting built).  So,
 				// wait for the package to have a non-running build status.
-				pkg, err := waitForPackageBuild(fclient, &o)
+				pkg, err := waitForPackageBuild(ctx, fclient, &o)
 				if err != nil {
 					// log and ignore
 					console.Warn(fmt.Sprintf("Error waiting for package '%v' build, ignoring", o.ObjectMeta.Name))
@@ -723,23 +722,24 @@ func applyPackages(fclient client.Interface, fr *FissionResources, delete bool,
 					pkg.Status.BuildStatus = fv1.BuildStatusPending
 				}
 
-				newmeta, err := fclient.V1().Package().Update(pkg)
+				newmeta, err := fclient.FissionClientSet.CoreV1().Packages(pkg.ObjectMeta.Namespace).Update(ctx, pkg, metav1.UpdateOptions{})
 				if err != nil {
 					return nil, nil, err
 					// TODO check for resourceVersion conflict errors and retry
 				}
-				ras.Updated = append(ras.Updated, newmeta)
+				ras.Updated = append(ras.Updated, &newmeta.ObjectMeta)
 				// keep track of metadata in case we need to create a reference to it
-				metadataMap[mapKey(&o.ObjectMeta)] = *newmeta
+				metadataMap[mapKey(&o.ObjectMeta)] = newmeta.ObjectMeta
 			}
 		} else {
+
 			// create
-			newmeta, err := fclient.V1().Package().Create(&o)
+			newmeta, err := fclient.FissionClientSet.CoreV1().Packages(o.ObjectMeta.Namespace).Create(ctx, &o, metav1.CreateOptions{})
 			if err != nil {
 				return nil, nil, err
 			}
-			ras.Created = append(ras.Created, newmeta)
-			metadataMap[mapKey(&o.ObjectMeta)] = *newmeta
+			ras.Created = append(ras.Created, &newmeta.ObjectMeta)
+			metadataMap[mapKey(&o.ObjectMeta)] = newmeta.ObjectMeta
 		}
 	}
 
@@ -749,7 +749,7 @@ func applyPackages(fclient client.Interface, fr *FissionResources, delete bool,
 		for _, o := range objs {
 			_, wanted := desired[mapKey(&o.ObjectMeta)]
 			if !wanted {
-				err := fclient.V1().Package().Delete(&o.ObjectMeta)
+				err := fclient.FissionClientSet.CoreV1().Packages(o.ObjectMeta.Namespace).Delete(ctx, o.ObjectMeta.Name, metav1.DeleteOptions{})
 				if err != nil {
 					return nil, nil, err
 				}
@@ -762,9 +762,9 @@ func applyPackages(fclient client.Interface, fr *FissionResources, delete bool,
 	return metadataMap, &ras, nil
 }
 
-func applyFunctions(fclient client.Interface, fr *FissionResources, delete bool, specAllowConflicts bool) (map[string]metav1.ObjectMeta, *ResourceApplyStatus, error) {
+func applyFunctions(ctx context.Context, fclient cmd.Client, fr *FissionResources, delete bool, specAllowConflicts bool) (map[string]metav1.ObjectMeta, *ResourceApplyStatus, error) {
 	// get list
-	allObjs, err := fclient.V1().Function().List(metav1.NamespaceAll)
+	allObjs, err := fclient.FissionClientSet.CoreV1().Functions(metav1.NamespaceAll).List(ctx, metav1.ListOptions{})
 	if err != nil {
 		return nil, nil, err
 	}
@@ -772,9 +772,9 @@ func applyFunctions(fclient client.Interface, fr *FissionResources, delete bool,
 	// filter
 	objs := make([]fv1.Function, 0)
 	if specAllowConflicts {
-		objs = allObjs
+		objs = allObjs.Items
 	} else {
-		for _, o := range allObjs {
+		for _, o := range allObjs.Items {
 			if hasDeploymentConfig(&o.ObjectMeta, fr) {
 				objs = append(objs, o)
 			}
@@ -811,22 +811,22 @@ func applyFunctions(fclient client.Interface, fr *FissionResources, delete bool,
 			} else {
 				// update
 				o.ObjectMeta.ResourceVersion = existingObj.ObjectMeta.ResourceVersion
-				newmeta, err := fclient.V1().Function().Update(&o)
+				newmeta, err := fclient.FissionClientSet.CoreV1().Functions(o.ObjectMeta.Namespace).Update(ctx, &o, metav1.UpdateOptions{})
 				if err != nil {
 					return nil, nil, err
 				}
-				ras.Updated = append(ras.Updated, newmeta)
+				ras.Updated = append(ras.Updated, &newmeta.ObjectMeta)
 				// keep track of metadata in case we need to create a reference to it
-				metadataMap[mapKey(&o.ObjectMeta)] = *newmeta
+				metadataMap[mapKey(&o.ObjectMeta)] = newmeta.ObjectMeta
 			}
 		} else {
 			// create
-			newmeta, err := fclient.V1().Function().Create(&o)
+			newmeta, err := fclient.FissionClientSet.CoreV1().Functions(o.ObjectMeta.Namespace).Create(ctx, &o, metav1.CreateOptions{})
 			if err != nil {
 				return nil, nil, err
 			}
-			ras.Created = append(ras.Created, newmeta)
-			metadataMap[mapKey(&o.ObjectMeta)] = *newmeta
+			ras.Created = append(ras.Created, &newmeta.ObjectMeta)
+			metadataMap[mapKey(&o.ObjectMeta)] = newmeta.ObjectMeta
 		}
 	}
 
@@ -836,7 +836,7 @@ func applyFunctions(fclient client.Interface, fr *FissionResources, delete bool,
 		for _, o := range objs {
 			_, wanted := desired[mapKey(&o.ObjectMeta)]
 			if !wanted {
-				err := fclient.V1().Function().Delete(&o.ObjectMeta)
+				err := fclient.FissionClientSet.CoreV1().Functions(o.ObjectMeta.Namespace).Delete(ctx, o.ObjectMeta.Name, metav1.DeleteOptions{})
 				if err != nil {
 					return nil, nil, err
 				}
@@ -849,9 +849,9 @@ func applyFunctions(fclient client.Interface, fr *FissionResources, delete bool,
 	return metadataMap, &ras, nil
 }
 
-func applyEnvironments(fclient client.Interface, fr *FissionResources, delete bool, specAllowConflicts bool) (map[string]metav1.ObjectMeta, *ResourceApplyStatus, error) {
+func applyEnvironments(ctx context.Context, fclient cmd.Client, fr *FissionResources, delete bool, specAllowConflicts bool) (map[string]metav1.ObjectMeta, *ResourceApplyStatus, error) {
 	// get list
-	allObjs, err := fclient.V1().Environment().List(metav1.NamespaceAll)
+	allObjs, err := fclient.FissionClientSet.CoreV1().Environments(metav1.NamespaceAll).List(ctx, metav1.ListOptions{})
 	if err != nil {
 		return nil, nil, err
 	}
@@ -859,9 +859,9 @@ func applyEnvironments(fclient client.Interface, fr *FissionResources, delete bo
 	// filter
 	objs := make([]fv1.Environment, 0)
 	if specAllowConflicts {
-		objs = allObjs
+		objs = allObjs.Items
 	} else {
-		for _, o := range allObjs {
+		for _, o := range allObjs.Items {
 			if hasDeploymentConfig(&o.ObjectMeta, fr) {
 				objs = append(objs, o)
 			}
@@ -898,22 +898,22 @@ func applyEnvironments(fclient client.Interface, fr *FissionResources, delete bo
 			} else {
 				// update
 				o.ObjectMeta.ResourceVersion = existingObj.ObjectMeta.ResourceVersion
-				newmeta, err := fclient.V1().Environment().Update(&o)
+				newmeta, err := fclient.FissionClientSet.CoreV1().Environments(o.ObjectMeta.Namespace).Update(ctx, &o, metav1.UpdateOptions{})
 				if err != nil {
 					return nil, nil, err
 				}
-				ras.Updated = append(ras.Updated, newmeta)
+				ras.Updated = append(ras.Updated, &newmeta.ObjectMeta)
 				// keep track of metadata in case we need to create a reference to it
-				metadataMap[mapKey(&o.ObjectMeta)] = *newmeta
+				metadataMap[mapKey(&o.ObjectMeta)] = newmeta.ObjectMeta
 			}
 		} else {
 			// create
-			newmeta, err := fclient.V1().Environment().Create(&o)
+			newmeta, err := fclient.FissionClientSet.CoreV1().Environments(o.ObjectMeta.Namespace).Create(ctx, &o, metav1.CreateOptions{})
 			if err != nil {
 				return nil, nil, err
 			}
-			ras.Created = append(ras.Created, newmeta)
-			metadataMap[mapKey(&o.ObjectMeta)] = *newmeta
+			ras.Created = append(ras.Created, &newmeta.ObjectMeta)
+			metadataMap[mapKey(&o.ObjectMeta)] = newmeta.ObjectMeta
 		}
 	}
 
@@ -923,7 +923,7 @@ func applyEnvironments(fclient client.Interface, fr *FissionResources, delete bo
 		for _, o := range objs {
 			_, wanted := desired[mapKey(&o.ObjectMeta)]
 			if !wanted {
-				err := fclient.V1().Environment().Delete(&o.ObjectMeta)
+				err := fclient.FissionClientSet.CoreV1().Environments(o.ObjectMeta.Namespace).Delete(ctx, o.ObjectMeta.Namespace, metav1.DeleteOptions{})
 				if err != nil {
 					return nil, nil, err
 				}
@@ -936,9 +936,9 @@ func applyEnvironments(fclient client.Interface, fr *FissionResources, delete bo
 	return metadataMap, &ras, nil
 }
 
-func applyHTTPTriggers(fclient client.Interface, fr *FissionResources, delete bool, specAllowConflicts bool) (map[string]metav1.ObjectMeta, *ResourceApplyStatus, error) {
+func applyHTTPTriggers(ctx context.Context, fclient cmd.Client, fr *FissionResources, delete bool, specAllowConflicts bool) (map[string]metav1.ObjectMeta, *ResourceApplyStatus, error) {
 	// get list
-	allObjs, err := fclient.V1().HTTPTrigger().List(metav1.NamespaceAll)
+	allObjs, err := fclient.FissionClientSet.CoreV1().HTTPTriggers(metav1.NamespaceAll).List(ctx, metav1.ListOptions{})
 	if err != nil {
 		return nil, nil, err
 	}
@@ -946,9 +946,9 @@ func applyHTTPTriggers(fclient client.Interface, fr *FissionResources, delete bo
 	// filter
 	objs := make([]fv1.HTTPTrigger, 0)
 	if specAllowConflicts {
-		objs = allObjs
+		objs = allObjs.Items
 	} else {
-		for _, o := range allObjs {
+		for _, o := range allObjs.Items {
 			if hasDeploymentConfig(&o.ObjectMeta, fr) {
 				objs = append(objs, o)
 			}
@@ -983,24 +983,34 @@ func applyHTTPTriggers(fclient client.Interface, fr *FissionResources, delete bo
 				// nothing to do on the server
 				metadataMap[mapKey(&o.ObjectMeta)] = existingObj.ObjectMeta
 			} else {
+
+				err := util.CheckHTTPTriggerDuplicates(ctx, fclient, &o)
+				if err != nil {
+					return nil, nil, err
+				}
 				// update
 				o.ObjectMeta.ResourceVersion = existingObj.ObjectMeta.ResourceVersion
-				newmeta, err := fclient.V1().HTTPTrigger().Update(&o)
+				newmeta, err := fclient.FissionClientSet.CoreV1().HTTPTriggers(o.ObjectMeta.Namespace).Update(ctx, &o, metav1.UpdateOptions{})
 				if err != nil {
 					return nil, nil, err
 				}
-				ras.Updated = append(ras.Updated, newmeta)
+				ras.Updated = append(ras.Updated, &newmeta.ObjectMeta)
 				// keep track of metadata in case we need to create a reference to it
-				metadataMap[mapKey(&o.ObjectMeta)] = *newmeta
+				metadataMap[mapKey(&o.ObjectMeta)] = newmeta.ObjectMeta
 			}
 		} else {
-			// create
-			newmeta, err := fclient.V1().HTTPTrigger().Create(&o)
+
+			err := util.CheckHTTPTriggerDuplicates(ctx, fclient, &o)
 			if err != nil {
 				return nil, nil, err
 			}
-			ras.Created = append(ras.Created, newmeta)
-			metadataMap[mapKey(&o.ObjectMeta)] = *newmeta
+			// create
+			newmeta, err := fclient.FissionClientSet.CoreV1().HTTPTriggers(o.ObjectMeta.Namespace).Create(ctx, &o, metav1.CreateOptions{})
+			if err != nil {
+				return nil, nil, err
+			}
+			ras.Created = append(ras.Created, &newmeta.ObjectMeta)
+			metadataMap[mapKey(&o.ObjectMeta)] = newmeta.ObjectMeta
 		}
 	}
 
@@ -1010,7 +1020,7 @@ func applyHTTPTriggers(fclient client.Interface, fr *FissionResources, delete bo
 		for _, o := range objs {
 			_, wanted := desired[mapKey(&o.ObjectMeta)]
 			if !wanted {
-				err := fclient.V1().HTTPTrigger().Delete(&o.ObjectMeta)
+				err := fclient.FissionClientSet.CoreV1().HTTPTriggers(o.ObjectMeta.Namespace).Delete(ctx, o.ObjectMeta.Name, metav1.DeleteOptions{})
 				if err != nil {
 					return nil, nil, err
 				}
@@ -1023,9 +1033,9 @@ func applyHTTPTriggers(fclient client.Interface, fr *FissionResources, delete bo
 	return metadataMap, &ras, nil
 }
 
-func applyKubernetesWatchTriggers(fclient client.Interface, fr *FissionResources, delete bool, specAllowConflicts bool) (map[string]metav1.ObjectMeta, *ResourceApplyStatus, error) {
+func applyKubernetesWatchTriggers(ctx context.Context, fclient cmd.Client, fr *FissionResources, delete bool, specAllowConflicts bool) (map[string]metav1.ObjectMeta, *ResourceApplyStatus, error) {
 	// get list
-	allObjs, err := fclient.V1().KubeWatcher().List(metav1.NamespaceAll)
+	allObjs, err := fclient.FissionClientSet.CoreV1().KubernetesWatchTriggers(metav1.NamespaceAll).List(ctx, metav1.ListOptions{})
 	if err != nil {
 		return nil, nil, err
 	}
@@ -1033,9 +1043,9 @@ func applyKubernetesWatchTriggers(fclient client.Interface, fr *FissionResources
 	// filter
 	objs := make([]fv1.KubernetesWatchTrigger, 0)
 	if specAllowConflicts {
-		objs = allObjs
+		objs = allObjs.Items
 	} else {
-		for _, o := range allObjs {
+		for _, o := range allObjs.Items {
 			if hasDeploymentConfig(&o.ObjectMeta, fr) {
 				objs = append(objs, o)
 			}
@@ -1072,22 +1082,22 @@ func applyKubernetesWatchTriggers(fclient client.Interface, fr *FissionResources
 			} else {
 				// update
 				o.ObjectMeta.ResourceVersion = existingObj.ObjectMeta.ResourceVersion
-				newmeta, err := fclient.V1().KubeWatcher().Update(&o)
+				newmeta, err := fclient.FissionClientSet.CoreV1().KubernetesWatchTriggers(o.ObjectMeta.Namespace).Update(ctx, &o, metav1.UpdateOptions{})
 				if err != nil {
 					return nil, nil, err
 				}
-				ras.Updated = append(ras.Updated, newmeta)
+				ras.Updated = append(ras.Updated, &newmeta.ObjectMeta)
 				// keep track of metadata in case we need to create a reference to it
-				metadataMap[mapKey(&o.ObjectMeta)] = *newmeta
+				metadataMap[mapKey(&o.ObjectMeta)] = newmeta.ObjectMeta
 			}
 		} else {
 			// create
-			newmeta, err := fclient.V1().KubeWatcher().Create(&o)
+			newmeta, err := fclient.FissionClientSet.CoreV1().KubernetesWatchTriggers(o.ObjectMeta.Namespace).Create(ctx, &o, metav1.CreateOptions{})
 			if err != nil {
 				return nil, nil, err
 			}
-			ras.Created = append(ras.Created, newmeta)
-			metadataMap[mapKey(&o.ObjectMeta)] = *newmeta
+			ras.Created = append(ras.Created, &newmeta.ObjectMeta)
+			metadataMap[mapKey(&o.ObjectMeta)] = newmeta.ObjectMeta
 		}
 	}
 
@@ -1097,7 +1107,7 @@ func applyKubernetesWatchTriggers(fclient client.Interface, fr *FissionResources
 		for _, o := range objs {
 			_, wanted := desired[mapKey(&o.ObjectMeta)]
 			if !wanted {
-				err := fclient.V1().KubeWatcher().Delete(&o.ObjectMeta)
+				err := fclient.FissionClientSet.CoreV1().KubernetesWatchTriggers(o.ObjectMeta.Namespace).Delete(ctx, o.ObjectMeta.Name, metav1.DeleteOptions{})
 				if err != nil {
 					return nil, nil, err
 				}
@@ -1110,9 +1120,9 @@ func applyKubernetesWatchTriggers(fclient client.Interface, fr *FissionResources
 	return metadataMap, &ras, nil
 }
 
-func applyTimeTriggers(fclient client.Interface, fr *FissionResources, delete bool, specAllowConflicts bool) (map[string]metav1.ObjectMeta, *ResourceApplyStatus, error) {
+func applyTimeTriggers(ctx context.Context, fclient cmd.Client, fr *FissionResources, delete bool, specAllowConflicts bool) (map[string]metav1.ObjectMeta, *ResourceApplyStatus, error) {
 	// get list
-	allObjs, err := fclient.V1().TimeTrigger().List(metav1.NamespaceAll)
+	allObjs, err := fclient.FissionClientSet.CoreV1().TimeTriggers(metav1.NamespaceAll).List(ctx, metav1.ListOptions{})
 	if err != nil {
 		return nil, nil, err
 	}
@@ -1120,9 +1130,9 @@ func applyTimeTriggers(fclient client.Interface, fr *FissionResources, delete bo
 	// filter
 	objs := make([]fv1.TimeTrigger, 0)
 	if specAllowConflicts {
-		objs = allObjs
+		objs = allObjs.Items
 	} else {
-		for _, o := range allObjs {
+		for _, o := range allObjs.Items {
 			if hasDeploymentConfig(&o.ObjectMeta, fr) {
 				objs = append(objs, o)
 			}
@@ -1159,22 +1169,22 @@ func applyTimeTriggers(fclient client.Interface, fr *FissionResources, delete bo
 			} else {
 				// update
 				o.ObjectMeta.ResourceVersion = existingObj.ObjectMeta.ResourceVersion
-				newmeta, err := fclient.V1().TimeTrigger().Update(&o)
+				newmeta, err := fclient.FissionClientSet.CoreV1().TimeTriggers(o.ObjectMeta.Namespace).Update(ctx, &o, metav1.UpdateOptions{})
 				if err != nil {
 					return nil, nil, err
 				}
-				ras.Updated = append(ras.Updated, newmeta)
+				ras.Updated = append(ras.Updated, &newmeta.ObjectMeta)
 				// keep track of metadata in case we need to create a reference to it
-				metadataMap[mapKey(&o.ObjectMeta)] = *newmeta
+				metadataMap[mapKey(&o.ObjectMeta)] = newmeta.ObjectMeta
 			}
 		} else {
 			// create
-			newmeta, err := fclient.V1().TimeTrigger().Create(&o)
+			newmeta, err := fclient.FissionClientSet.CoreV1().TimeTriggers(o.Namespace).Create(ctx, &o, metav1.CreateOptions{})
 			if err != nil {
 				return nil, nil, err
 			}
-			ras.Created = append(ras.Created, newmeta)
-			metadataMap[mapKey(&o.ObjectMeta)] = *newmeta
+			ras.Created = append(ras.Created, &newmeta.ObjectMeta)
+			metadataMap[mapKey(&o.ObjectMeta)] = newmeta.ObjectMeta
 		}
 	}
 
@@ -1184,7 +1194,7 @@ func applyTimeTriggers(fclient client.Interface, fr *FissionResources, delete bo
 		for _, o := range objs {
 			_, wanted := desired[mapKey(&o.ObjectMeta)]
 			if !wanted {
-				err := fclient.V1().TimeTrigger().Delete(&o.ObjectMeta)
+				err := fclient.FissionClientSet.CoreV1().TimeTriggers(o.ObjectMeta.Namespace).Delete(ctx, o.ObjectMeta.Name, metav1.DeleteOptions{})
 				if err != nil {
 					return nil, nil, err
 				}
@@ -1197,9 +1207,9 @@ func applyTimeTriggers(fclient client.Interface, fr *FissionResources, delete bo
 	return metadataMap, &ras, nil
 }
 
-func applyMessageQueueTriggers(fclient client.Interface, fr *FissionResources, delete bool, specAllowConflicts bool) (map[string]metav1.ObjectMeta, *ResourceApplyStatus, error) {
+func applyMessageQueueTriggers(ctx context.Context, fclient cmd.Client, fr *FissionResources, delete bool, specAllowConflicts bool) (map[string]metav1.ObjectMeta, *ResourceApplyStatus, error) {
 	// get list
-	allObjs, err := fclient.V1().MessageQueueTrigger().List("", metav1.NamespaceAll)
+	allObjs, err := fclient.FissionClientSet.CoreV1().MessageQueueTriggers(metav1.NamespaceAll).List(ctx, metav1.ListOptions{})
 	if err != nil {
 		return nil, nil, err
 	}
@@ -1207,9 +1217,9 @@ func applyMessageQueueTriggers(fclient client.Interface, fr *FissionResources, d
 	// filter
 	objs := make([]fv1.MessageQueueTrigger, 0)
 	if specAllowConflicts {
-		objs = allObjs
+		objs = allObjs.Items
 	} else {
-		for _, o := range allObjs {
+		for _, o := range allObjs.Items {
 			if hasDeploymentConfig(&o.ObjectMeta, fr) {
 				objs = append(objs, o)
 			}
@@ -1246,22 +1256,22 @@ func applyMessageQueueTriggers(fclient client.Interface, fr *FissionResources, d
 			} else {
 				// update
 				o.ObjectMeta.ResourceVersion = existingObj.ObjectMeta.ResourceVersion
-				newmeta, err := fclient.V1().MessageQueueTrigger().Update(&o)
+				newmeta, err := fclient.FissionClientSet.CoreV1().MessageQueueTriggers(o.ObjectMeta.Namespace).Update(ctx, &o, metav1.UpdateOptions{})
 				if err != nil {
 					return nil, nil, err
 				}
-				ras.Updated = append(ras.Updated, newmeta)
+				ras.Updated = append(ras.Updated, &newmeta.ObjectMeta)
 				// keep track of metadata in case we need to create a reference to it
-				metadataMap[mapKey(&o.ObjectMeta)] = *newmeta
+				metadataMap[mapKey(&o.ObjectMeta)] = newmeta.ObjectMeta
 			}
 		} else {
 			// create
-			newmeta, err := fclient.V1().MessageQueueTrigger().Create(&o)
+			newmeta, err := fclient.FissionClientSet.CoreV1().MessageQueueTriggers(o.ObjectMeta.Namespace).Create(ctx, &o, metav1.CreateOptions{})
 			if err != nil {
 				return nil, nil, err
 			}
-			ras.Created = append(ras.Created, newmeta)
-			metadataMap[mapKey(&o.ObjectMeta)] = *newmeta
+			ras.Created = append(ras.Created, &newmeta.ObjectMeta)
+			metadataMap[mapKey(&o.ObjectMeta)] = newmeta.ObjectMeta
 		}
 	}
 
@@ -1271,7 +1281,7 @@ func applyMessageQueueTriggers(fclient client.Interface, fr *FissionResources, d
 		for _, o := range objs {
 			_, wanted := desired[mapKey(&o.ObjectMeta)]
 			if !wanted {
-				err := fclient.V1().MessageQueueTrigger().Delete(&o.ObjectMeta)
+				err := fclient.FissionClientSet.CoreV1().MessageQueueTriggers(o.ObjectMeta.Namespace).Delete(ctx, o.ObjectMeta.Name, metav1.DeleteOptions{})
 				if err != nil {
 					return nil, nil, err
 				}

pkg/fission-cli/cmd/spec/buildwatch.go

@@ -25,7 +25,7 @@ import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
 	fv1 "github.com/fission/fission/pkg/apis/core/v1"
-	"github.com/fission/fission/pkg/controller/client"
+	"github.com/fission/fission/pkg/fission-cli/cmd"
 	"github.com/fission/fission/pkg/fission-cli/cmd/package/util"
 )
 
@@ -33,8 +33,7 @@ type (
 	// packageBuildWatcher is used to watch a set of in-progress builds.
 	packageBuildWatcher struct {
 		// fission client
-		fclient client.Interface
-
+		fclient cmd.Client
 		// set of packages already printed, ensures we don't duplicate the notifications
 		finished map[string]bool
 
@@ -43,7 +42,7 @@ type (
 	}
 )
 
-func makePackageBuildWatcher(fclient client.Interface) *packageBuildWatcher {
+func makePackageBuildWatcher(fclient cmd.Client) *packageBuildWatcher {
 	return &packageBuildWatcher{
 		fclient:  fclient,
 		finished: make(map[string]bool),
@@ -67,7 +66,7 @@ func (w *packageBuildWatcher) watch(ctx context.Context) {
 		}
 
 		// pull list of packages (TODO: convert to watch)
-		pkgs, err := w.fclient.V1().Package().List(metav1.NamespaceAll)
+		pkgs, err := w.fclient.FissionClientSet.CoreV1().Packages(metav1.NamespaceAll).List(ctx, metav1.ListOptions{})
 		if err != nil {
 			fmt.Printf("Getting list of packages: %v", err)
 			os.Exit(1)
@@ -77,7 +76,7 @@ func (w *packageBuildWatcher) watch(ctx context.Context) {
 		// build status (either succeeded or failed; not "none")
 		keepWaiting := false
 		buildpkgs := make([]fv1.Package, 0)
-		for _, pkg := range pkgs {
+		for _, pkg := range pkgs.Items {
 			_, ok := w.pkgMeta[mapKey(&pkg.ObjectMeta)]
 			if !ok {
 				continue

pkg/fission-cli/cmd/spec/destroy.go

@@ -17,13 +17,14 @@ limitations under the License.
 package spec
 
 import (
+	"context"
 	"fmt"
 	"strings"
 
 	"github.com/pkg/errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
 	fv1 "github.com/fission/fission/pkg/apis/core/v1"
-	"github.com/fission/fission/pkg/controller/client"
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
 	"github.com/fission/fission/pkg/fission-cli/cmd"
 	"github.com/fission/fission/pkg/fission-cli/console"
@@ -68,14 +69,14 @@ func (opts *DestroySubCommand) run(input cli.Input) error {
 		emptyFr.DeploymentConfig = fr.DeploymentConfig
 
 		// "apply" the empty state
-		err = forceDeleteResources(opts.Client(), &emptyFr)
+		err = forceDeleteResources(input.Context(), opts.Client(), &emptyFr)
 		if err != nil {
 			return errors.Wrap(err, "error deleting resources")
 		}
 		return nil
 	}
 	forceDelete := input.Bool(flagkey.ForceDelete)
-	err = deleteResources(opts.Client(), fr, forceDelete)
+	err = deleteResources(input.Context(), opts.Client(), fr, forceDelete)
 	if err != nil {
 		return errors.Wrap(err, "error deleting resources")
 	}
@@ -83,41 +84,41 @@ func (opts *DestroySubCommand) run(input cli.Input) error {
 	return nil
 }
 
-func forceDeleteResources(fclient client.Interface, fr *FissionResources) error {
+func forceDeleteResources(ctx context.Context, fclient cmd.Client, fr *FissionResources) error {
 
 	var err error
 
-	_, _, err = applyHTTPTriggers(fclient, fr, true, false)
+	_, _, err = applyHTTPTriggers(ctx, fclient, fr, true, false)
 	if err != nil {
 		return errors.Wrap(err, "HTTPTrigger delete failed")
 	}
 
-	_, _, err = applyKubernetesWatchTriggers(fclient, fr, true, false)
+	_, _, err = applyKubernetesWatchTriggers(ctx, fclient, fr, true, false)
 	if err != nil {
 		return errors.Wrap(err, "KubernetesWatchTrigger delete failed")
 	}
 
-	_, _, err = applyTimeTriggers(fclient, fr, true, false)
+	_, _, err = applyTimeTriggers(ctx, fclient, fr, true, false)
 	if err != nil {
 		return errors.Wrap(err, "TimeTrigger delete failed")
 	}
 
-	_, _, err = applyMessageQueueTriggers(fclient, fr, true, false)
+	_, _, err = applyMessageQueueTriggers(ctx, fclient, fr, true, false)
 	if err != nil {
 		return errors.Wrap(err, "MessageQueueTrigger delete failed")
 	}
 
-	_, _, err = applyFunctions(fclient, fr, true, false)
+	_, _, err = applyFunctions(ctx, fclient, fr, true, false)
 	if err != nil {
 		return errors.Wrap(err, "function delete failed")
 	}
 
-	_, _, err = applyPackages(fclient, fr, true, false)
+	_, _, err = applyPackages(ctx, fclient, fr, true, false)
 	if err != nil {
 		return errors.Wrap(err, "package delete failed")
 	}
 
-	_, _, err = applyEnvironments(fclient, fr, true, false)
+	_, _, err = applyEnvironments(ctx, fclient, fr, true, false)
 	if err != nil {
 		return errors.Wrap(err, "environment delete failed")
 	}
@@ -131,7 +132,7 @@ func (opts *DestroySubCommand) insertNSToResource(input cli.Input, fr *FissionRe
 
 	result := utils.MultiErrorWithFormat()
 
-	_, currentNS, err := util.GetResourceNamespace(input, flagkey.NamespaceEnvironment)
+	_, currentNS, err := opts.GetResourceNamespace(input, flagkey.NamespaceEnvironment)
 	if err != nil {
 		return fv1.AggregateValidationErrors("Environment", err)
 	}
@@ -175,41 +176,41 @@ func (opts *DestroySubCommand) insertNSToResource(input cli.Input, fr *FissionRe
 	return result.ErrorOrNil()
 }
 
-func deleteResources(fclient client.Interface, fr *FissionResources, forceDelete bool) error {
+func deleteResources(ctx context.Context, fclient cmd.Client, fr *FissionResources, forceDelete bool) error {
 
 	var err error
 
-	err = destroyHTTPTriggers(fclient, fr)
+	err = destroyHTTPTriggers(ctx, fclient, fr)
 	if err != nil {
 		return errors.Wrap(err, "HTTPTrigger delete failed")
 	}
 
-	err = destroyKubernetesWatchTriggers(fclient, fr)
+	err = destroyKubernetesWatchTriggers(ctx, fclient, fr)
 	if err != nil {
 		return errors.Wrap(err, "KubernetesWatchTrigger delete failed")
 	}
 
-	err = destroyTimeTriggers(fclient, fr)
+	err = destroyTimeTriggers(ctx, fclient, fr)
 	if err != nil {
 		return errors.Wrap(err, "TimeTrigger delete failed")
 	}
 
-	err = destroyMessageQueueTriggers(fclient, fr)
+	err = destroyMessageQueueTriggers(ctx, fclient, fr)
 	if err != nil {
 		return errors.Wrap(err, "MessageQueueTrigger delete failed")
 	}
 
-	err = destroyFunctions(fclient, fr)
+	err = destroyFunctions(ctx, fclient, fr)
 	if err != nil {
 		return errors.Wrap(err, "function delete failed")
 	}
 
-	err = destroyPackages(fclient, fr)
+	err = destroyPackages(ctx, fclient, fr)
 	if err != nil {
 		return errors.Wrap(err, "package delete failed")
 	}
 
-	err = destroyEnvironments(fclient, fr)
+	err = destroyEnvironments(ctx, fclient, fr)
 	if err != nil {
 		return errors.Wrap(err, "environment delete failed")
 	}
@@ -217,9 +218,9 @@ func deleteResources(fclient client.Interface, fr *FissionResources, forceDelete
 	return nil
 }
 
-func destroyHTTPTriggers(fclient client.Interface, fr *FissionResources) error {
+func destroyHTTPTriggers(ctx context.Context, fclient cmd.Client, fr *FissionResources) error {
 	for _, o := range fr.HttpTriggers {
-		err := fclient.V1().HTTPTrigger().Delete(&o.ObjectMeta)
+		err := fclient.FissionClientSet.CoreV1().HTTPTriggers(o.ObjectMeta.Namespace).Delete(ctx, o.ObjectMeta.Name, metav1.DeleteOptions{})
 		if err != nil && strings.Contains(err.Error(), "not found") {
 			console.Verbose(2, fmt.Sprintf("could not delete httptrigger: %s Namespace: %s", o.ObjectMeta.Name, o.ObjectMeta.Namespace))
 			err = nil
@@ -233,10 +234,10 @@ func destroyHTTPTriggers(fclient client.Interface, fr *FissionResources) error {
 	return nil
 }
 
-func destroyKubernetesWatchTriggers(fclient client.Interface, fr *FissionResources) error {
+func destroyKubernetesWatchTriggers(ctx context.Context, fclient cmd.Client, fr *FissionResources) error {
 
 	for _, o := range fr.KubernetesWatchTriggers {
-		err := fclient.V1().KubeWatcher().Delete(&o.ObjectMeta)
+		err := fclient.FissionClientSet.CoreV1().KubernetesWatchTriggers(o.ObjectMeta.Namespace).Delete(ctx, o.ObjectMeta.Name, metav1.DeleteOptions{})
 		if err != nil && strings.Contains(err.Error(), "not found") {
 			console.Verbose(2, fmt.Sprintf("could not delete watch: %s Namespace: %s", o.ObjectMeta.Name, o.ObjectMeta.Namespace))
 			err = nil
@@ -251,10 +252,10 @@ func destroyKubernetesWatchTriggers(fclient client.Interface, fr *FissionResourc
 	return nil
 }
 
-func destroyTimeTriggers(fclient client.Interface, fr *FissionResources) error {
+func destroyTimeTriggers(ctx context.Context, fclient cmd.Client, fr *FissionResources) error {
 
 	for _, o := range fr.TimeTriggers {
-		err := fclient.V1().TimeTrigger().Delete(&o.ObjectMeta)
+		err := fclient.FissionClientSet.CoreV1().TimeTriggers(o.ObjectMeta.Namespace).Delete(ctx, o.ObjectMeta.Name, metav1.DeleteOptions{})
 		if err != nil && strings.Contains(err.Error(), "not found") {
 			console.Verbose(2, fmt.Sprintf("could not delete Time trigger: %s Namespace: %s", o.ObjectMeta.Name, o.ObjectMeta.Namespace))
 			err = nil
@@ -269,10 +270,10 @@ func destroyTimeTriggers(fclient client.Interface, fr *FissionResources) error {
 	return nil
 }
 
-func destroyMessageQueueTriggers(fclient client.Interface, fr *FissionResources) error {
+func destroyMessageQueueTriggers(ctx context.Context, fclient cmd.Client, fr *FissionResources) error {
 
 	for _, o := range fr.MessageQueueTriggers {
-		err := fclient.V1().MessageQueueTrigger().Delete(&o.ObjectMeta)
+		err := fclient.FissionClientSet.CoreV1().MessageQueueTriggers(o.ObjectMeta.Namespace).Delete(ctx, o.ObjectMeta.Name, metav1.DeleteOptions{})
 		if err != nil && strings.Contains(err.Error(), "not found") {
 			console.Verbose(2, fmt.Sprintf("could not delete Message trigger: %s Namespace: %s", o.ObjectMeta.Name, o.ObjectMeta.Namespace))
 			err = nil
@@ -287,10 +288,10 @@ func destroyMessageQueueTriggers(fclient client.Interface, fr *FissionResources)
 	return nil
 }
 
-func destroyFunctions(fclient client.Interface, fr *FissionResources) error {
+func destroyFunctions(ctx context.Context, fclient cmd.Client, fr *FissionResources) error {
 
 	for _, o := range fr.Functions {
-		err := fclient.V1().Function().Delete(&o.ObjectMeta)
+		err := fclient.FissionClientSet.CoreV1().Functions(o.ObjectMeta.Namespace).Delete(ctx, o.ObjectMeta.Name, metav1.DeleteOptions{})
 		if err != nil && strings.Contains(err.Error(), "not found") {
 			console.Verbose(2, fmt.Sprintf("could not delete Functions: %s Namespace: %s", o.ObjectMeta.Name, o.ObjectMeta.Namespace))
 			err = nil
@@ -305,10 +306,10 @@ func destroyFunctions(fclient client.Interface, fr *FissionResources) error {
 	return nil
 }
 
-func destroyPackages(fclient client.Interface, fr *FissionResources) error {
+func destroyPackages(ctx context.Context, fclient cmd.Client, fr *FissionResources) error {
 
 	for _, o := range fr.Packages {
-		err := fclient.V1().Package().Delete(&o.ObjectMeta)
+		err := fclient.FissionClientSet.CoreV1().Packages(o.ObjectMeta.Namespace).Delete(ctx, o.ObjectMeta.Name, metav1.DeleteOptions{})
 		if err != nil && strings.Contains(err.Error(), "not found") {
 			console.Verbose(2, fmt.Sprintf("could not delete Package: %s Namespace: %s", o.ObjectMeta.Name, o.ObjectMeta.Namespace))
 			err = nil
@@ -323,10 +324,10 @@ func destroyPackages(fclient client.Interface, fr *FissionResources) error {
 	return nil
 }
 
-func destroyEnvironments(fclient client.Interface, fr *FissionResources) error {
+func destroyEnvironments(ctx context.Context, fclient cmd.Client, fr *FissionResources) error {
 
 	for _, o := range fr.Environments {
-		err := fclient.V1().Environment().Delete(&o.ObjectMeta)
+		err := fclient.FissionClientSet.CoreV1().Environments(o.ObjectMeta.Namespace).Delete(ctx, o.ObjectMeta.Name, metav1.DeleteOptions{})
 		if err != nil && strings.Contains(err.Error(), "not found") {
 			console.Verbose(2, fmt.Sprintf("could not delete Env: %s Namespace: %s", o.ObjectMeta.Name, o.ObjectMeta.Namespace))
 			err = nil

pkg/fission-cli/cmd/spec/list.go

@@ -17,6 +17,7 @@ limitations under the License.
 package spec
 
 import (
+	"context"
 	"fmt"
 	"os"
 	"strings"
@@ -24,9 +25,9 @@ import (
 	"time"
 
 	"github.com/pkg/errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
 	fv1 "github.com/fission/fission/pkg/apis/core/v1"
-	"github.com/fission/fission/pkg/controller/client"
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
 	"github.com/fission/fission/pkg/fission-cli/cmd"
 	flagkey "github.com/fission/fission/pkg/fission-cli/flag/key"
@@ -60,27 +61,27 @@ func (opts *ListSubCommand) run(input cli.Input) error {
 		deployID = fr.DeploymentConfig.UID
 	}
 
-	_, currentNS, err := util.GetResourceNamespace(input, flagkey.NamespaceEnvironment)
+	_, currentNS, err := opts.GetResourceNamespace(input, flagkey.NamespaceEnvironment)
 	if err != nil {
 		return fv1.AggregateValidationErrors("Environment", err)
 	}
 
 	if input.Bool(flagkey.AllNamespaces) {
-		return opts.getResource(input, "", deployID)
-	} else {
-		return opts.getResource(input, currentNS, deployID)
+		currentNS = metav1.NamespaceAll
 	}
 
+	return opts.getResource(input, currentNS, deployID)
+
 }
 
 func (opts *ListSubCommand) getResource(input cli.Input, namespace string, deployID string) (err error) {
 	var allfn []fv1.Function
 	printNS := namespace
-	if printNS == "" {
+	if printNS == metav1.NamespaceAll {
 		printNS = "all"
 	}
 
-	allfn, err = getAllFunctions(opts.Client(), namespace)
+	allfn, err = getAllFunctions(input.Context(), opts.Client(), namespace)
 	if err != nil {
 		return errors.Wrap(err, fmt.Sprintf("error getting Functions from %s namespaces", printNS))
 	}
@@ -88,7 +89,7 @@ func (opts *ListSubCommand) getResource(input cli.Input, namespace string, deplo
 	ShowFunctions(specfns)
 
 	var allenvs []fv1.Environment
-	allenvs, err = getAllEnvironments(opts.Client(), namespace)
+	allenvs, err = getAllEnvironments(input.Context(), opts.Client(), namespace)
 	if err != nil {
 		return errors.Wrap(err, fmt.Sprintf("error getting Environments from  %s namespaces", printNS))
 	}
@@ -96,7 +97,7 @@ func (opts *ListSubCommand) getResource(input cli.Input, namespace string, deplo
 	ShowEnvironments(specenvs)
 
 	var pkglists []fv1.Package
-	pkglists, err = getAllPackages(opts.Client(), namespace)
+	pkglists, err = getAllPackages(input.Context(), opts.Client(), namespace)
 	if err != nil {
 		return errors.Wrap(err, fmt.Sprintf("error getting Packages from  %s namespaces", printNS))
 	}
@@ -104,7 +105,7 @@ func (opts *ListSubCommand) getResource(input cli.Input, namespace string, deplo
 	ShowPackages(specPkgs)
 
 	var canaryCfgs []fv1.CanaryConfig
-	canaryCfgs, err = getAllCanaryConfigs(opts.Client(), namespace)
+	canaryCfgs, err = getAllCanaryConfigs(input.Context(), opts.Client(), namespace)
 	if err != nil {
 		return errors.Wrap(err, fmt.Sprintf("error getting Canary Config from  %s namespaces", printNS))
 	}
@@ -112,7 +113,7 @@ func (opts *ListSubCommand) getResource(input cli.Input, namespace string, deplo
 	ShowCanaryConfigs(specCanaryCfgs)
 
 	var hts []fv1.HTTPTrigger
-	hts, err = getAllHTTPTriggers(opts.Client(), namespace)
+	hts, err = getAllHTTPTriggers(input.Context(), opts.Client(), namespace)
 	if err != nil {
 		return errors.Wrap(err, fmt.Sprintf("error getting HTTP Triggers from  %s namespaces", printNS))
 	}
@@ -120,7 +121,7 @@ func (opts *ListSubCommand) getResource(input cli.Input, namespace string, deplo
 	ShowHTTPTriggers(specHTTPTriggers)
 
 	var mqts []fv1.MessageQueueTrigger
-	mqts, err = getAllMessageQueueTriggers(opts.Client(), input.String(flagkey.MqtMQType), namespace)
+	mqts, err = getAllMessageQueueTriggers(input.Context(), opts.Client(), input.String(flagkey.MqtMQType), namespace)
 	if err != nil {
 		return errors.Wrap(err, fmt.Sprintf("error getting MessageQueue Triggers from  %s namespaces", printNS))
 	}
@@ -128,7 +129,7 @@ func (opts *ListSubCommand) getResource(input cli.Input, namespace string, deplo
 	ShowMQTriggers(specMessageQueueTriggers)
 
 	var tts []fv1.TimeTrigger
-	tts, err = getAllTimeTriggers(opts.Client(), namespace)
+	tts, err = getAllTimeTriggers(input.Context(), opts.Client(), namespace)
 	if err != nil {
 		return errors.Wrap(err, fmt.Sprintf("error getting Time Triggers from  %s namespaces", printNS))
 	}
@@ -136,7 +137,7 @@ func (opts *ListSubCommand) getResource(input cli.Input, namespace string, deplo
 	ShowTimeTriggers(specTimeTriggers)
 
 	var kws []fv1.KubernetesWatchTrigger
-	kws, err = getAllKubeWatchTriggers(opts.Client(), namespace)
+	kws, err = getAllKubeWatchTriggers(input.Context(), opts.Client(), namespace)
 	if err != nil {
 		return errors.Wrap(err, fmt.Sprintf("error getting Kube Watchers from  %s namespaces", printNS))
 	}
@@ -420,73 +421,73 @@ func ShowAppliedKubeWatchers(ws []fv1.KubernetesWatchTrigger) {
 }
 
 // getAllFunctions get lists of functions in provided namespaces
-func getAllFunctions(client client.Interface, namespace string) ([]fv1.Function, error) {
-	fns, err := client.V1().Function().List(namespace)
+func getAllFunctions(ctx context.Context, client cmd.Client, namespace string) ([]fv1.Function, error) {
+	fns, err := client.FissionClientSet.CoreV1().Functions(namespace).List(ctx, metav1.ListOptions{})
 	if err != nil {
 		return nil, errors.Errorf("Unable to get Functions %v", err.Error())
 	}
-	return fns, nil
+	return fns.Items, nil
 }
 
 // getAllEnvironments get lists of environments in all namespaces
-func getAllEnvironments(client client.Interface, namespace string) ([]fv1.Environment, error) {
-	envs, err := client.V1().Environment().List(namespace)
+func getAllEnvironments(ctx context.Context, client cmd.Client, namespace string) ([]fv1.Environment, error) {
+	envs, err := client.FissionClientSet.CoreV1().Environments(namespace).List(ctx, metav1.ListOptions{})
 	if err != nil {
 		return nil, errors.Errorf("Unable to get Environments %v", err.Error())
 	}
-	return envs, nil
+	return envs.Items, nil
 }
 
 // getAllPackages get lists of packages in all namespaces
-func getAllPackages(client client.Interface, namespace string) ([]fv1.Package, error) {
-	pkgList, err := client.V1().Package().List(namespace)
+func getAllPackages(ctx context.Context, client cmd.Client, namespace string) ([]fv1.Package, error) {
+	pkgList, err := client.FissionClientSet.CoreV1().Packages(namespace).List(ctx, metav1.ListOptions{})
 	if err != nil {
 		return nil, errors.Errorf("Unable to get Packages %v", err.Error())
 	}
-	return pkgList, nil
+	return pkgList.Items, nil
 }
 
 // getAllCanaryConfigs get lists of canary configs in all namespaces
-func getAllCanaryConfigs(client client.Interface, namespace string) ([]fv1.CanaryConfig, error) {
-	canaryCfgs, err := client.V1().CanaryConfig().List(namespace)
+func getAllCanaryConfigs(ctx context.Context, client cmd.Client, namespace string) ([]fv1.CanaryConfig, error) {
+	canaryCfgs, err := client.FissionClientSet.CoreV1().CanaryConfigs(namespace).List(ctx, metav1.ListOptions{})
 	if err != nil {
 		return nil, errors.Errorf("Unable to get Canary Configs %v", err.Error())
 	}
-	return canaryCfgs, nil
+	return canaryCfgs.Items, nil
 }
 
 // getAllHTTPTriggers get lists of HTTP Triggers in all namespaces
-func getAllHTTPTriggers(client client.Interface, namespace string) ([]fv1.HTTPTrigger, error) {
-	hts, err := client.V1().HTTPTrigger().List(namespace)
+func getAllHTTPTriggers(ctx context.Context, client cmd.Client, namespace string) ([]fv1.HTTPTrigger, error) {
+	hts, err := client.FissionClientSet.CoreV1().HTTPTriggers(namespace).List(ctx, metav1.ListOptions{})
 	if err != nil {
 		return nil, errors.Errorf("Unable to get HTTP Triggers %v", err.Error())
 	}
-	return hts, nil
+	return hts.Items, nil
 }
 
 // getAllMessageQueueTriggers get lists of MessageQueue Triggers in all namespaces
-func getAllMessageQueueTriggers(client client.Interface, mqttype string, namespace string) ([]fv1.MessageQueueTrigger, error) {
-	mqts, err := client.V1().MessageQueueTrigger().List(mqttype, namespace)
+func getAllMessageQueueTriggers(ctx context.Context, client cmd.Client, mqttype string, namespace string) ([]fv1.MessageQueueTrigger, error) {
+	mqts, err := client.FissionClientSet.CoreV1().MessageQueueTriggers(namespace).List(ctx, metav1.ListOptions{})
 	if err != nil {
 		return nil, errors.Errorf("Unable to get MessageQueue Triggers %v", err.Error())
 	}
-	return mqts, nil
+	return mqts.Items, nil
 }
 
 // getAllTimeTriggers get lists of Time Triggers in all namespaces
-func getAllTimeTriggers(client client.Interface, namespace string) ([]fv1.TimeTrigger, error) {
-	tts, err := client.V1().TimeTrigger().List(namespace)
+func getAllTimeTriggers(ctx context.Context, client cmd.Client, namespace string) ([]fv1.TimeTrigger, error) {
+	tts, err := client.FissionClientSet.CoreV1().TimeTriggers(namespace).List(ctx, metav1.ListOptions{})
 	if err != nil {
 		return nil, errors.Errorf("Unable to get Time Triggers %v", err.Error())
 	}
-	return tts, nil
+	return tts.Items, nil
 }
 
 // getAllKubeWatchTriggers get lists of Kube Watchers in all namespaces
-func getAllKubeWatchTriggers(client client.Interface, namespace string) ([]fv1.KubernetesWatchTrigger, error) {
-	ws, err := client.V1().KubeWatcher().List(namespace)
+func getAllKubeWatchTriggers(ctx context.Context, client cmd.Client, namespace string) ([]fv1.KubernetesWatchTrigger, error) {
+	ws, err := client.FissionClientSet.CoreV1().KubernetesWatchTriggers(namespace).List(ctx, metav1.ListOptions{})
 	if err != nil {
 		return nil, errors.Errorf("Unable to get Kube Watchers %v", err.Error())
 	}
-	return ws, nil
+	return ws.Items, nil
 }

pkg/fission-cli/cmd/spec/spec.go

@@ -31,6 +31,7 @@ import (
 
 	fv1 "github.com/fission/fission/pkg/apis/core/v1"
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
+	"github.com/fission/fission/pkg/fission-cli/cmd"
 	"github.com/fission/fission/pkg/fission-cli/cmd/spec/types"
 	"github.com/fission/fission/pkg/fission-cli/console"
 	"github.com/fission/fission/pkg/fission-cli/util"
@@ -297,7 +298,7 @@ func (fr *FissionResources) validateFunctionReference(functions map[string]bool,
 }
 
 // Validate validates the spec file for irregular references
-func (fr *FissionResources) Validate(input cli.Input) ([]string, error) {
+func (fr *FissionResources) Validate(input cli.Input, client cmd.Client) ([]string, error) {
 	result := utils.MultiErrorWithFormat()
 	var warnings []string
 
@@ -397,25 +398,17 @@ func (fr *FissionResources) Validate(input cli.Input) ([]string, error) {
 			}
 		}
 
-		client, err := util.GetServer(input)
-		if err != nil {
-			return warnings, err
-		}
 		for _, cm := range f.Spec.ConfigMaps {
-			err := client.V1().Misc().ConfigMapExists(&metav1.ObjectMeta{
-				Name:      cm.Name,
-				Namespace: cm.Namespace,
-			})
+
+			err := util.ConfigMapExists(input.Context(), &metav1.ObjectMeta{Namespace: cm.Namespace, Name: cm.Name}, client.KubernetesClient)
 			if k8serrors.IsNotFound(err) {
 				warnings = append(warnings, fmt.Sprintf("Configmap %s is referred in the spec but not present in the cluster", cm.Name))
 			}
 		}
 
 		for _, s := range f.Spec.Secrets {
-			err := client.V1().Misc().SecretExists(&metav1.ObjectMeta{
-				Name:      s.Name,
-				Namespace: s.Namespace,
-			})
+			err := util.SecretExists(input.Context(), &metav1.ObjectMeta{Namespace: s.Namespace, Name: s.Name}, client.KubernetesClient)
+
 			if k8serrors.IsNotFound(err) {
 				warnings = append(warnings, fmt.Sprintf("Secret %s is referred in the spec but not present in the cluster", s.Name))
 			}

pkg/fission-cli/cmd/spec/validate.go

@@ -18,6 +18,7 @@ package spec
 
 import (
 	"bytes"
+	"context"
 	"fmt"
 	"os"
 	"path/filepath"
@@ -29,7 +30,6 @@ import (
 	"k8s.io/apimachinery/pkg/runtime/schema"
 
 	fv1 "github.com/fission/fission/pkg/apis/core/v1"
-	"github.com/fission/fission/pkg/controller/client"
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
 	"github.com/fission/fission/pkg/fission-cli/cmd"
 	"github.com/fission/fission/pkg/fission-cli/console"
@@ -81,12 +81,12 @@ func (opts *ValidateSubCommand) run(input cli.Input, fr *FissionResources) (err
 
 	var warnings []string
 	// this does the rest of the checks, like dangling refs
-	warnings, err = fr.Validate(input)
+	warnings, err = fr.Validate(input, opts.Client())
 	if err != nil {
 		return errors.Wrap(err, "error validating specs")
 	}
 
-	err = resourceConflictCheck(opts.Client(), fr, input.Bool(flagkey.SpecAllowConflicts), "")
+	err = resourceConflictCheck(input.Context(), opts.Client(), fr, input.Bool(flagkey.SpecAllowConflicts), "")
 	if err != nil {
 		return errors.Wrap(err, "name conflict error")
 	}
@@ -104,11 +104,11 @@ func (opts *ValidateSubCommand) run(input cli.Input, fr *FissionResources) (err
 // the same name is already present in the same cluster namespace.
 // If a same name resource exists in the same namespace, a name
 // conflict error will be returned.
-func resourceConflictCheck(c client.Interface, fr *FissionResources, specAllowConflicts bool, namespace string) error {
+func resourceConflictCheck(ctx context.Context, c cmd.Client, fr *FissionResources, specAllowConflicts bool, namespace string) error {
 	deployUID := fr.DeploymentConfig.UID
 	result := utils.MultiErrorWithFormat()
 
-	fnList, err := getAllFunctions(c, namespace)
+	fnList, err := getAllFunctions(ctx, c, namespace)
 	if err != nil {
 		return errors.Errorf("Unable to get Functions %v", err.Error())
 	}
@@ -121,7 +121,7 @@ func resourceConflictCheck(c client.Interface, fr *FissionResources, specAllowCo
 		}
 	}
 
-	envList, err := getAllEnvironments(c, namespace)
+	envList, err := getAllEnvironments(ctx, c, namespace)
 	if err != nil {
 		return errors.Errorf("Unable to get Environments %v", err.Error())
 	}
@@ -134,7 +134,7 @@ func resourceConflictCheck(c client.Interface, fr *FissionResources, specAllowCo
 		}
 	}
 
-	pkgList, err := getAllPackages(c, namespace)
+	pkgList, err := getAllPackages(ctx, c, namespace)
 	if err != nil {
 		return errors.Errorf("Unable to get Packages %v", err.Error())
 	}
@@ -147,7 +147,7 @@ func resourceConflictCheck(c client.Interface, fr *FissionResources, specAllowCo
 		}
 	}
 
-	httptriggerList, err := getAllHTTPTriggers(c, namespace)
+	httptriggerList, err := getAllHTTPTriggers(ctx, c, namespace)
 	if err != nil {
 		return errors.Errorf("Unable to get HTTPTrigger %v", err.Error())
 	}
@@ -160,7 +160,7 @@ func resourceConflictCheck(c client.Interface, fr *FissionResources, specAllowCo
 		}
 	}
 
-	mqtriggerList, err := getAllMessageQueueTriggers(c, "", namespace)
+	mqtriggerList, err := getAllMessageQueueTriggers(ctx, c, "", namespace)
 	if err != nil {
 		return errors.Errorf("Unable to get Message Queue Trigger %v", err.Error())
 	}
@@ -173,7 +173,7 @@ func resourceConflictCheck(c client.Interface, fr *FissionResources, specAllowCo
 		}
 	}
 
-	timetriggerList, err := getAllTimeTriggers(c, namespace)
+	timetriggerList, err := getAllTimeTriggers(ctx, c, namespace)
 	if err != nil {
 		return errors.Errorf("Unable to get Time Trigger %v", err.Error())
 	}
@@ -186,7 +186,7 @@ func resourceConflictCheck(c client.Interface, fr *FissionResources, specAllowCo
 		}
 	}
 
-	kubewatchtriggerList, err := getAllKubeWatchTriggers(c, namespace)
+	kubewatchtriggerList, err := getAllKubeWatchTriggers(ctx, c, namespace)
 	if err != nil {
 		return errors.Errorf("Unable to get Kubernetes Watch Trigger %v", err.Error())
 	}

pkg/fission-cli/cmd/support/dump.go

@@ -29,7 +29,6 @@ import (
 	"github.com/fission/fission/pkg/fission-cli/cmd"
 	"github.com/fission/fission/pkg/fission-cli/cmd/support/resources"
 	flagkey "github.com/fission/fission/pkg/fission-cli/flag/key"
-	"github.com/fission/fission/pkg/fission-cli/util"
 	"github.com/fission/fission/pkg/utils"
 )
 
@@ -51,7 +50,6 @@ func (opts *DumpSubCommand) do(input cli.Input) error {
 
 	nozip := input.Bool(flagkey.SupportNoZip)
 	outputDir := input.String(flagkey.SupportOutput)
-	kubeContext := input.String(flagkey.KubeContext)
 	// check whether the dump directory exists.
 	_, err := os.Stat(outputDir)
 	if err != nil && os.IsNotExist(err) {
@@ -68,10 +66,7 @@ func (opts *DumpSubCommand) do(input cli.Input) error {
 		panic(errors.Wrap(err, "Error creating dump directory for dumping files"))
 	}
 
-	_, k8sClient, err := util.GetKubernetesClient(kubeContext)
-	if err != nil {
-		return err
-	}
+	k8sClient := opts.Client().KubernetesClient
 
 	ress := map[string]resources.Resource{
 		// kubernetes info
@@ -79,7 +74,7 @@ func (opts *DumpSubCommand) do(input cli.Input) error {
 		"kubernetes-nodes":   resources.NewKubernetesObjectDumper(k8sClient, resources.KubernetesNode, ""),
 
 		// fission info
-		"fission-version": resources.NewFissionVersion(opts.Client()),
+		"fission-version": resources.NewFissionVersion(opts.Client(), input),
 
 		// fission component logs & spec
 		"fission-components-svc-spec": resources.NewKubernetesObjectDumper(k8sClient, resources.KubernetesService,

pkg/fission-cli/cmd/support/resources/crd.go

@@ -23,7 +23,7 @@ import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
 	fv1 "github.com/fission/fission/pkg/apis/core/v1"
-	"github.com/fission/fission/pkg/controller/client"
+	"github.com/fission/fission/pkg/fission-cli/cmd"
 	"github.com/fission/fission/pkg/fission-cli/console"
 )
 
@@ -39,11 +39,11 @@ const (
 )
 
 type CrdDumper struct {
-	client  client.Interface
+	client  cmd.Client
 	crdType string
 }
 
-func NewCrdDumper(client client.Interface, crdType string) Resource {
+func NewCrdDumper(client cmd.Client, crdType string) Resource {
 	return CrdDumper{client: client, crdType: crdType}
 }
 
@@ -51,62 +51,62 @@ func (res CrdDumper) Dump(ctx context.Context, dumpDir string) {
 
 	switch res.crdType {
 	case CrdEnvironment:
-		items, err := res.client.V1().Environment().List(metav1.NamespaceAll)
+		items, err := res.client.FissionClientSet.CoreV1().Environments(metav1.NamespaceAll).List(ctx, metav1.ListOptions{})
 		if err != nil {
 			console.Warn(fmt.Sprintf("Error getting %v list: %v", res.crdType, err))
 			return
 		}
 
-		for _, item := range items {
+		for _, item := range items.Items {
 			f := getFileName(dumpDir, item.ObjectMeta)
 			writeToFile(f, item)
 		}
 
 	case CrdFunction:
-		items, err := res.client.V1().Function().List(metav1.NamespaceAll)
+		items, err := res.client.FissionClientSet.CoreV1().Functions(metav1.NamespaceAll).List(ctx, metav1.ListOptions{})
 		if err != nil {
 			console.Warn(fmt.Sprintf("Error getting %v list: %v", res.crdType, err))
 			return
 		}
 
-		for _, item := range items {
+		for _, item := range items.Items {
 			f := getFileName(dumpDir, item.ObjectMeta)
 			writeToFile(f, item)
 		}
 
 	case CrdPackage:
-		items, err := res.client.V1().Package().List(metav1.NamespaceAll)
+		items, err := res.client.FissionClientSet.CoreV1().Packages(metav1.NamespaceAll).List(ctx, metav1.ListOptions{})
 		if err != nil {
 			console.Warn(fmt.Sprintf("Error getting %v list: %v", res.crdType, err))
 			return
 		}
 
-		for _, item := range items {
+		for _, item := range items.Items {
 			item = pkgClean(item)
 			f := getFileName(dumpDir, item.ObjectMeta)
 			writeToFile(f, item)
 		}
 
 	case CrdHttpTrigger:
-		items, err := res.client.V1().HTTPTrigger().List(metav1.NamespaceAll)
+		items, err := res.client.FissionClientSet.CoreV1().HTTPTriggers(metav1.NamespaceAll).List(ctx, metav1.ListOptions{})
 		if err != nil {
 			console.Warn(fmt.Sprintf("Error getting %v list: %v", res.crdType, err))
 			return
 		}
 
-		for _, item := range items {
+		for _, item := range items.Items {
 			f := getFileName(dumpDir, item.ObjectMeta)
 			writeToFile(f, item)
 		}
 
 	case CrdKubeWatcher:
-		items, err := res.client.V1().KubeWatcher().List(metav1.NamespaceAll)
+		items, err := res.client.FissionClientSet.CoreV1().KubernetesWatchTriggers(metav1.NamespaceAll).List(ctx, metav1.ListOptions{})
 		if err != nil {
 			console.Warn(fmt.Sprintf("Error getting %v list: %v", res.crdType, err))
 			return
 		}
 
-		for _, item := range items {
+		for _, item := range items.Items {
 			f := getFileName(dumpDir, item.ObjectMeta)
 			writeToFile(f, item)
 		}
@@ -114,14 +114,12 @@ func (res CrdDumper) Dump(ctx context.Context, dumpDir string) {
 	case CrdMessageQueueTrigger:
 		var triggers []fv1.MessageQueueTrigger
 
-		for _, mqType := range []string{fv1.MessageQueueTypeKafka} {
-			l, err := res.client.V1().MessageQueueTrigger().List(mqType, metav1.NamespaceAll)
+		l, err := res.client.FissionClientSet.CoreV1().MessageQueueTriggers(metav1.NamespaceAll).List(ctx, metav1.ListOptions{})
 		if err != nil {
 			console.Warn(fmt.Sprintf("Error getting %v list: %v", res.crdType, err))
 			break
 		}
-			triggers = append(triggers, l...)
-		}
+		triggers = append(triggers, l.Items...)
 
 		for _, item := range triggers {
 			f := getFileName(dumpDir, item.ObjectMeta)
@@ -129,13 +127,13 @@ func (res CrdDumper) Dump(ctx context.Context, dumpDir string) {
 		}
 
 	case CrdTimeTrigger:
-		items, err := res.client.V1().TimeTrigger().List(metav1.NamespaceAll)
+		items, err := res.client.FissionClientSet.CoreV1().TimeTriggers(metav1.NamespaceAll).List(ctx, metav1.ListOptions{})
 		if err != nil {
 			console.Warn(fmt.Sprintf("Error getting %v list: %v", res.crdType, err))
 			return
 		}
 
-		for _, item := range items {
+		for _, item := range items.Items {
 			f := getFileName(dumpDir, item.ObjectMeta)
 			writeToFile(f, item)
 		}

pkg/fission-cli/cmd/support/resources/fissionversion.go

@@ -21,20 +21,22 @@ import (
 	"fmt"
 	"path/filepath"
 
-	"github.com/fission/fission/pkg/controller/client"
+	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
+	"github.com/fission/fission/pkg/fission-cli/cmd"
 	"github.com/fission/fission/pkg/fission-cli/util"
 )
 
 type FissionVersion struct {
-	client client.Interface
+	client cmd.Client
+	input  cli.Input
 }
 
-func NewFissionVersion(client client.Interface) Resource {
-	return FissionVersion{client: client}
+func NewFissionVersion(client cmd.Client, input cli.Input) Resource {
+	return FissionVersion{client: client, input: input}
 }
 
 func (res FissionVersion) Dump(ctx context.Context, dumpDir string) {
-	ver := util.GetVersion(ctx, res.client)
+	ver := util.GetVersion(ctx, res.input, res.client)
 	file := filepath.Clean(fmt.Sprintf("%v/%v", dumpDir, "fission-version.txt"))
 	writeToFile(file, ver)
 }

pkg/fission-cli/cmd/timetrigger/create.go

@@ -28,7 +28,6 @@ import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
 	fv1 "github.com/fission/fission/pkg/apis/core/v1"
-	"github.com/fission/fission/pkg/controller/client"
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
 	"github.com/fission/fission/pkg/fission-cli/cmd/spec"
 	"github.com/fission/fission/pkg/fission-cli/console"
@@ -68,7 +67,7 @@ func (opts *CreateSubCommand) complete(input cli.Input) (err error) {
 		return errors.New("Need a function name to create a trigger, use --function")
 	}
 
-	userProvidedNS, fnNamespace, err := util.GetResourceNamespace(input, flagkey.NamespaceFunction)
+	userProvidedNS, fnNamespace, err := opts.GetResourceNamespace(input, flagkey.NamespaceFunction)
 	if err != nil {
 		return errors.Wrap(err, "error in deleting function ")
 	}
@@ -143,17 +142,14 @@ func (opts *CreateSubCommand) run(input cli.Input) error {
 		return nil
 	}
 
-	_, err := opts.Client().V1().TimeTrigger().Create(opts.trigger)
+	_, err := opts.Client().FissionClientSet.CoreV1().TimeTriggers(opts.trigger.Namespace).Create(input.Context(), opts.trigger, metav1.CreateOptions{})
 	if err != nil {
 		return errors.Wrap(err, "error creating Time trigger")
 	}
 
 	fmt.Printf("trigger '%v' created\n", opts.trigger.ObjectMeta.Name)
 
-	t, err := getAPITimeInfo(opts.Client())
-	if err != nil {
-		return err
-	}
+	t := util.GetServerInfo(input, opts.Client()).ServerTime.CurrentTime.UTC()
 
 	err = getCronNextNActivationTime(opts.trigger.Spec.Cron, t, 1)
 	if err != nil {
@@ -163,14 +159,6 @@ func (opts *CreateSubCommand) run(input cli.Input) error {
 	return nil
 }
 
-func getAPITimeInfo(client client.Interface) (time.Time, error) {
-	serverInfo, err := client.V1().Misc().ServerInfo()
-	if err != nil {
-		return time.Time{}, errors.Errorf("Error syncing server time information: %v", err)
-	}
-	return serverInfo.ServerTime.CurrentTime, nil
-}
-
 func getCronNextNActivationTime(cronSpec string, serverTime time.Time, round int) error {
 	sched, err := cron.Parse(cronSpec)
 	if err != nil {

pkg/fission-cli/cmd/timetrigger/delete.go

@@ -20,12 +20,12 @@ import (
 	"fmt"
 
 	"github.com/pkg/errors"
+	kerrors "k8s.io/apimachinery/pkg/api/errors"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
 	"github.com/fission/fission/pkg/fission-cli/cmd"
 	flagkey "github.com/fission/fission/pkg/fission-cli/flag/key"
-	"github.com/fission/fission/pkg/fission-cli/util"
 )
 
 type DeleteSubCommand struct {
@@ -38,23 +38,19 @@ func Delete(input cli.Input) error {
 
 func (opts *DeleteSubCommand) do(input cli.Input) (err error) {
 
-	_, namespace, err := util.GetResourceNamespace(input, flagkey.NamespaceTrigger)
+	_, namespace, err := opts.GetResourceNamespace(input, flagkey.NamespaceTrigger)
 	if err != nil {
 		return errors.Wrap(err, "error in deleting function ")
 	}
-	m := &metav1.ObjectMeta{
-		Name:      input.String(flagkey.TtName),
-		Namespace: namespace,
-	}
 
-	err = opts.Client().V1().TimeTrigger().Delete(m)
+	err = opts.Client().FissionClientSet.CoreV1().TimeTriggers(namespace).Delete(input.Context(), input.String(flagkey.TtName), metav1.DeleteOptions{})
 	if err != nil {
-		if input.Bool(flagkey.IgnoreNotFound) && util.IsNotFound(err) {
+		if input.Bool(flagkey.IgnoreNotFound) && kerrors.IsNotFound(err) {
 			return nil
 		}
 		return errors.Wrap(err, "error deleting trigger")
 	}
 
-	fmt.Printf("trigger '%v' deleted\n", m.Name)
+	fmt.Printf("trigger '%v' deleted\n", input.String(flagkey.TtName))
 	return nil
 }

pkg/fission-cli/cmd/timetrigger/list.go

@@ -22,12 +22,11 @@ import (
 	"text/tabwriter"
 
 	"github.com/pkg/errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
-	v1 "github.com/fission/fission/pkg/apis/core/v1"
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
 	"github.com/fission/fission/pkg/fission-cli/cmd"
 	flagkey "github.com/fission/fission/pkg/fission-cli/flag/key"
-	"github.com/fission/fission/pkg/fission-cli/util"
 )
 
 type ListSubCommand struct {
@@ -39,17 +38,15 @@ func List(input cli.Input) error {
 }
 
 func (opts *ListSubCommand) do(input cli.Input) (err error) {
-	_, ttNs, err := util.GetResourceNamespace(input, flagkey.NamespaceTrigger)
+	_, ttNs, err := opts.GetResourceNamespace(input, flagkey.NamespaceTrigger)
 	if err != nil {
 		return errors.Wrap(err, "error in deleting function ")
 	}
 
-	var tts []v1.TimeTrigger
 	if input.Bool(flagkey.AllNamespaces) {
-		tts, err = opts.Client().V1().TimeTrigger().List("")
-	} else {
-		tts, err = opts.Client().V1().TimeTrigger().List(ttNs)
+		ttNs = metav1.NamespaceAll
 	}
+	tts, err := opts.Client().FissionClientSet.CoreV1().TimeTriggers(ttNs).List(input.Context(), metav1.ListOptions{})
 
 	if err != nil {
 		return errors.Wrap(err, "list Time triggers")
@@ -58,7 +55,7 @@ func (opts *ListSubCommand) do(input cli.Input) (err error) {
 	w := tabwriter.NewWriter(os.Stdout, 0, 0, 1, ' ', 0)
 
 	fmt.Fprintf(w, "%v\t%v\t%v\n", "NAME", "CRON", "FUNCTION_NAME")
-	for _, tt := range tts {
+	for _, tt := range tts.Items {
 		fmt.Fprintf(w, "%v\t%v\t%v\n",
 			tt.ObjectMeta.Name, tt.Spec.Cron, tt.Spec.FunctionReference.Name)
 	}

pkg/fission-cli/cmd/timetrigger/test.go

@@ -22,6 +22,7 @@ import (
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
 	"github.com/fission/fission/pkg/fission-cli/cmd"
 	flagkey "github.com/fission/fission/pkg/fission-cli/flag/key"
+	"github.com/fission/fission/pkg/fission-cli/util"
 )
 
 type ShowSubCommand struct {
@@ -44,12 +45,9 @@ func (opts *ShowSubCommand) run(flaginput cli.Input) error {
 		return errors.New("need a cron spec like '0 30 * * * *', '@every 1h30m', or '@hourly'; use --cron")
 	}
 
-	t, err := getAPITimeInfo(opts.Client())
-	if err != nil {
-		return err
-	}
+	t := util.GetServerInfo(flaginput, opts.Client()).ServerTime.CurrentTime.UTC()
 
-	err = getCronNextNActivationTime(cronSpec, t, round)
+	err := getCronNextNActivationTime(cronSpec, t, round)
 	if err != nil {
 		return errors.Wrap(err, "error passing cron spec examination")
 	}

pkg/fission-cli/cmd/timetrigger/update.go

@@ -48,14 +48,12 @@ func (opts *UpdateSubCommand) do(input cli.Input) error {
 }
 
 func (opts *UpdateSubCommand) complete(input cli.Input) error {
-	_, namespace, err := util.GetResourceNamespace(input, flagkey.NamespaceTrigger)
+	_, namespace, err := opts.GetResourceNamespace(input, flagkey.NamespaceTrigger)
 	if err != nil {
 		return errors.Wrap(err, "error in deleting function ")
 	}
-	tt, err := opts.Client().V1().TimeTrigger().Get(&metav1.ObjectMeta{
-		Name:      input.String(flagkey.TtName),
-		Namespace: namespace,
-	})
+
+	tt, err := opts.Client().FissionClientSet.CoreV1().TimeTriggers(namespace).Get(input.Context(), input.String(flagkey.TtName), metav1.GetOptions{})
 	if err != nil {
 		return errors.Wrap(err, "error getting time trigger")
 	}
@@ -70,7 +68,7 @@ func (opts *UpdateSubCommand) complete(input cli.Input) error {
 	fnName := input.String("function")
 	if len(fnName) > 0 {
 		functionList := []string{fnName}
-		err := util.CheckFunctionExistence(opts.Client(), functionList, namespace)
+		err := util.CheckFunctionExistence(input.Context(), opts.Client(), functionList, namespace)
 		if err != nil {
 			console.Warn(err.Error())
 		}
@@ -88,14 +86,14 @@ func (opts *UpdateSubCommand) complete(input cli.Input) error {
 }
 
 func (opts *UpdateSubCommand) run(input cli.Input) error {
-	_, err := opts.Client().V1().TimeTrigger().Update(opts.trigger)
+	_, err := opts.Client().FissionClientSet.CoreV1().TimeTriggers(opts.trigger.ObjectMeta.Namespace).Update(input.Context(), opts.trigger, metav1.UpdateOptions{})
 	if err != nil {
 		return errors.Wrap(err, "error updating Time trigger")
 	}
 
 	fmt.Printf("trigger '%v' updated\n", opts.trigger.ObjectMeta.Name)
 
-	t, err := getAPITimeInfo(opts.Client())
+	t := util.GetServerInfo(input, opts.Client()).ServerTime.CurrentTime.UTC()
 	if err != nil {
 		return err
 	}

pkg/fission-cli/cmd/token/create.go

@@ -64,9 +64,8 @@ func (opts *CreateSubCommand) run(input cli.Input) error {
 
 	jsonValue, _ := json.Marshal(values)
 
-	kubeContext := input.String(flagkey.KubeContext)
 	// Portforward to the fission router
-	localRouterPort, err := util.SetupPortForward(input.Context(), util.GetFissionNamespace(), "application=fission-router", kubeContext)
+	localRouterPort, err := util.SetupPortForward(input.Context(), opts.Client(), util.GetFissionNamespace(), "application=fission-router")
 	if err != nil {
 		return err
 	}

pkg/fission-cli/cmd/version/version.go

@@ -36,7 +36,7 @@ func Version(input cli.Input) error {
 }
 
 func (opts *VersionSubCommand) do(input cli.Input) error {
-	ver := util.GetVersion(input.Context(), opts.Client())
+	ver := util.GetVersion(input.Context(), input, opts.Client())
 	bs, err := yaml.Marshal(ver)
 	if err != nil {
 		return errors.Wrap(err, "error formatting versions")

pkg/fission-cli/util/portforward.go

@@ -32,6 +32,7 @@ import (
 	"k8s.io/client-go/tools/portforward"
 	"k8s.io/client-go/transport/spdy"
 
+	"github.com/fission/fission/pkg/fission-cli/cmd"
 	"github.com/fission/fission/pkg/fission-cli/console"
 	"github.com/fission/fission/pkg/utils"
 )
@@ -43,7 +44,7 @@ const maxDuration time.Duration = 2000
 // is found by looking for a service in the same namespace and using
 // its targetPort. Once the port forward is started, wait for it to
 // start accepting connections before returning.
-func SetupPortForward(ctx context.Context, namespace, labelSelector string, kubeContext string) (string, error) {
+func SetupPortForward(ctx context.Context, client cmd.Client, namespace, labelSelector string) (string, error) {
 	console.Verbose(2, "Setting up port forward to %s in namespace %s",
 		labelSelector, namespace)
 
@@ -71,7 +72,7 @@ func SetupPortForward(ctx context.Context, namespace, labelSelector string, kube
 
 	console.Verbose(2, "Starting port forward from local port %v", localPort)
 
-	readyC, _, err := runPortForward(ctx, labelSelector, localPort, namespace, kubeContext)
+	readyC, _, err := runPortForward(ctx, client, labelSelector, localPort, namespace)
 	if err != nil {
 		fmt.Printf("Error forwarding to port %v: %s", localPort, err.Error())
 		return "", err
@@ -119,11 +120,7 @@ func findFreePort() (string, error) {
 }
 
 // runPortForward creates a local port forward to the specified pod
-func runPortForward(ctx context.Context, labelSelector string, localPort string, ns string, kubeContext string) (chan struct{}, chan struct{}, error) {
-	config, clientset, err := GetKubernetesClient(kubeContext)
-	if err != nil {
-		return nil, nil, err
-	}
+func runPortForward(ctx context.Context, client cmd.Client, labelSelector string, localPort string, ns string) (chan struct{}, chan struct{}, error) {
 
 	console.Verbose(2, "Connected to Kubernetes API")
 
@@ -133,7 +130,7 @@ func runPortForward(ctx context.Context, labelSelector string, localPort string,
 	}
 
 	// get the pod; if there is more than one, ask the user to disambiguate
-	podList, err := clientset.CoreV1().Pods(ns).
+	podList, err := client.KubernetesClient.CoreV1().Pods(ns).
 		List(ctx, metav1.ListOptions{LabelSelector: labelSelector})
 	if err != nil {
 		return nil, nil, errors.Wrapf(err, "error getting pod for port-forwarding with label selector %v", labelSelector)
@@ -179,7 +176,7 @@ func runPortForward(ctx context.Context, labelSelector string, localPort string,
 	}
 
 	// get the service and the target port
-	svcs, err := clientset.CoreV1().Services(podNameSpace).
+	svcs, err := client.KubernetesClient.CoreV1().Services(podNameSpace).
 		List(ctx, metav1.ListOptions{LabelSelector: labelSelector})
 	if err != nil {
 		return nil, nil, errors.Wrapf(err, "Error getting %v service", labelSelector)
@@ -199,7 +196,7 @@ func runPortForward(ctx context.Context, labelSelector string, localPort string,
 	readyChannel := make(chan struct{})
 
 	// create request URL
-	req := clientset.CoreV1().RESTClient().Post().Resource("pods").
+	req := client.KubernetesClient.CoreV1().RESTClient().Post().Resource("pods").
 		Namespace(podNameSpace).Name(podName).SubResource("portforward")
 	url := req.URL()
 
@@ -208,7 +205,7 @@ func runPortForward(ctx context.Context, labelSelector string, localPort string,
 	ports := []string{portCombo}
 
 	// actually start the port-forwarding process here
-	transport, upgrader, err := spdy.RoundTripperFor(config)
+	transport, upgrader, err := spdy.RoundTripperFor(client.RestConfig)
 	if err != nil {
 		return nil, nil, errors.Errorf("Failed to connect to Fission service on Kubernetes")
 	}

pkg/fission-cli/util/util.go

@@ -19,11 +19,12 @@ package util
 import (
 	"context"
 	"fmt"
+	"io"
 	"net/url"
 	"os"
-	"os/user"
 	"path/filepath"
 	"regexp"
+	"sort"
 	"strconv"
 	"strings"
 
@@ -36,12 +37,12 @@ import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/labels"
 	"k8s.io/client-go/kubernetes"
-	restclient "k8s.io/client-go/rest"
-	"k8s.io/client-go/tools/clientcmd"
 
+	fv1 "github.com/fission/fission/pkg/apis/core/v1"
 	"github.com/fission/fission/pkg/controller/client"
 	"github.com/fission/fission/pkg/controller/client/rest"
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
+	"github.com/fission/fission/pkg/fission-cli/cmd"
 	"github.com/fission/fission/pkg/fission-cli/console"
 	flagkey "github.com/fission/fission/pkg/fission-cli/flag/key"
 	"github.com/fission/fission/pkg/info"
@@ -54,13 +55,13 @@ func GetFissionNamespace() string {
 	return fissionNamespace
 }
 
-func GetApplicationUrl(ctx context.Context, selector string, kubeContext string) (string, error) {
+func GetApplicationUrl(ctx context.Context, client cmd.Client, selector string) (string, error) {
 	var serverUrl string
 	// Use FISSION_URL env variable if set; otherwise, port-forward to controller.
 	fissionUrl := os.Getenv("FISSION_URL")
 	if len(fissionUrl) == 0 {
 		fissionNamespace := GetFissionNamespace()
-		localPort, err := SetupPortForward(ctx, fissionNamespace, selector, kubeContext)
+		localPort, err := SetupPortForward(ctx, client, fissionNamespace, selector)
 		if err != nil {
 			return "", err
 		}
@@ -104,87 +105,11 @@ func KubifyName(old string) string {
 	return newName
 }
 
-func getLoadingRules() (loadingRules *clientcmd.ClientConfigLoadingRules, err error) {
-	loadingRules = clientcmd.NewDefaultClientConfigLoadingRules()
-
-	kubeConfigPath := os.Getenv("KUBECONFIG")
-	if len(kubeConfigPath) == 0 {
-		var homeDir string
-		usr, err := user.Current()
-		if err != nil {
-			// In case that user.Current() may be unable to work under some circumstances and return errors like
-			// "user: Current not implemented on darwin/amd64" due to cross-compilation problem. (https://github.com/golang/go/issues/6376).
-			// Instead of doing fatal here, we fallback to get home directory from the environment $HOME.
-			console.Warn(fmt.Sprintf("Could not get the current user's directory (%s), fallback to get it from env $HOME", err))
-			homeDir = os.Getenv("HOME")
-		} else {
-			homeDir = usr.HomeDir
-		}
-		kubeConfigPath = filepath.Join(homeDir, ".kube", "config")
-
-		if _, err := os.Stat(kubeConfigPath); os.IsNotExist(err) {
-			return nil, errors.New("Couldn't find kubeconfig file. " +
-				"Set the KUBECONFIG environment variable to your kubeconfig's path.")
-		}
-		loadingRules.ExplicitPath = kubeConfigPath
-		console.Verbose(2, "Using kubeconfig from %q", kubeConfigPath)
-	} else {
-		console.Verbose(2, "Using kubeconfig from environment %q", kubeConfigPath)
-	}
-	return loadingRules, nil
-}
-
-// GetKubernetesClient builds a new kubernetes client. If the KUBECONFIG
-// environment variable is empty or doesn't exist, ~/.kube/config is used for
-// the kube config path
-func GetKubernetesClient(kubeContext string) (*restclient.Config, kubernetes.Interface, error) {
-	loadingRules, err := getLoadingRules()
-	if err != nil {
-		return nil, nil, err
-	}
-
-	config, err := clientcmd.NewNonInteractiveDeferredLoadingClientConfig(
-		loadingRules, &clientcmd.ConfigOverrides{CurrentContext: kubeContext}).ClientConfig()
-	if err != nil {
-		return nil, nil, errors.Wrap(err, "Failed to build Kubernetes config")
-	}
-
-	clientset, err := kubernetes.NewForConfig(config)
-	if err != nil {
-		return nil, nil, errors.Wrap(err, "Failed to connect to Kubernetes")
-	}
-
-	return config, clientset, nil
-}
-
-// GetKubernetesNamespace builds a new kubernetes client. If the KUBECONFIG
-// environment variable is empty or doesn't exist, ~/.kube/config is used for
-// the kube config path
-func GetKubernetesNamespace(kubeContext string) (currentNS string, err error) {
-	loadingRules, err := getLoadingRules()
-	if err != nil {
-		return "", err
-	}
-
-	namespace, _, err := clientcmd.NewNonInteractiveDeferredLoadingClientConfig(
-		loadingRules, &clientcmd.ConfigOverrides{CurrentContext: kubeContext}).Namespace()
-	if err != nil {
-		return "", errors.Wrap(err, "Failed to build Kubernetes config")
-	}
-
-	return namespace, nil
-}
-
 // given a list of functions, this checks if the functions actually exist on the cluster
-func CheckFunctionExistence(client client.Interface, functions []string, fnNamespace string) (err error) {
+func CheckFunctionExistence(ctx context.Context, client cmd.Client, functions []string, fnNamespace string) (err error) {
 	fnMissing := make([]string, 0)
 	for _, fnName := range functions {
-		meta := &metav1.ObjectMeta{
-			Name:      fnName,
-			Namespace: fnNamespace,
-		}
-
-		_, err := client.V1().Function().Get(meta)
+		_, err := client.FissionClientSet.CoreV1().Functions(fnNamespace).Get(ctx, fnName, metav1.GetOptions{})
 		if err != nil {
 			fnMissing = append(fnMissing, fnName)
 		}
@@ -197,7 +122,7 @@ func CheckFunctionExistence(client client.Interface, functions []string, fnNames
 	return nil
 }
 
-func GetVersion(ctx context.Context, client client.Interface) info.Versions {
+func GetVersion(ctx context.Context, input cli.Input, cmdClient cmd.Client) info.Versions {
 	// Fetch client versions
 	versions := info.Versions{
 		Client: map[string]info.BuildMeta{
@@ -211,11 +136,7 @@ func GetVersion(ctx context.Context, client client.Interface) info.Versions {
 		}
 	}
 
-	serverInfo, err := client.V1().Misc().ServerInfo()
-	if err != nil {
-		console.Warn(fmt.Sprintf("Error getting Fission API version: %v", err))
-		serverInfo = &info.ServerInfo{}
-	}
+	serverInfo := GetServerInfo(input, cmdClient)
 
 	// Fetch server versions
 	versions.Server = map[string]info.BuildMeta{
@@ -227,20 +148,28 @@ func GetVersion(ctx context.Context, client client.Interface) info.Versions {
 	return versions
 }
 
-func GetServer(input cli.Input) (c client.Interface, err error) {
-	serverUrl, err := GetServerURL(input)
+func GetServerInfo(input cli.Input, cmdClient cmd.Client) *info.ServerInfo {
+	serverUrl, err := GetServerURL(input, cmdClient)
 	if err != nil {
-		return nil, err
+		return &info.ServerInfo{}
 	}
-	return client.MakeClientset(rest.NewRESTClient(serverUrl)), nil
+	restClient := rest.NewRESTClient(serverUrl)
+	client := client.MakeClientset(restClient)
+
+	serverInfo, err := client.V1().Misc().ServerInfo()
+	if err != nil {
+		console.Warn(fmt.Sprintf("Error getting Fission API version: %v", err))
+		serverInfo = &info.ServerInfo{}
+	}
+
+	return serverInfo
 }
 
-func GetServerURL(input cli.Input) (serverUrl string, err error) {
+func GetServerURL(input cli.Input, client cmd.Client) (serverUrl string, err error) {
 	serverUrl = input.GlobalString(flagkey.Server)
-	kubeContext := input.String(flagkey.KubeContext)
 	if len(serverUrl) == 0 {
 		// starts local portforwarder etc.
-		serverUrl, err = GetApplicationUrl(input.Context(), "application=fission-api", kubeContext)
+		serverUrl, err = GetApplicationUrl(input.Context(), client, "application=fission-api")
 		if err != nil {
 			return "", err
 		}
@@ -472,8 +401,8 @@ func ApplyLabelsAndAnnotations(input cli.Input, objectMeta *metav1.ObjectMeta) e
 	return nil
 }
 
-func GetStorageURL(ctx context.Context, kubeContext string) (*url.URL, error) {
-	storageLocalPort, err := SetupPortForward(ctx, GetFissionNamespace(), "application=fission-storage", kubeContext)
+func GetStorageURL(ctx context.Context, client cmd.Client) (*url.URL, error) {
+	storageLocalPort, err := SetupPortForward(ctx, client, GetFissionNamespace(), "application=fission-storage")
 	if err != nil {
 		return nil, err
 	}
@@ -486,30 +415,151 @@ func GetStorageURL(ctx context.Context, kubeContext string) (*url.URL, error) {
 	return serverURL, nil
 }
 
-func GetResourceNamespace(input cli.Input, deprecatedFlag string) (namespace, currentNS string, err error) {
-	namespace = input.String(deprecatedFlag)
-	currentNS = namespace
-
-	if input.String(flagkey.Namespace) != "" {
-		namespace = input.String(flagkey.Namespace)
-		currentNS = namespace
-		console.Verbose(2, "Namespace for resource %s ", currentNS)
-		return namespace, currentNS, err
-	}
-
-	if namespace == "" {
-		if os.Getenv("FISSION_DEFAULT_NAMESPACE") != "" {
-			currentNS = os.Getenv("FISSION_DEFAULT_NAMESPACE")
-		} else {
-			kubeContext := input.String(flagkey.KubeContext)
-			currentNS, err = GetKubernetesNamespace(kubeContext)
+// CheckHTTPTriggerDuplicates checks whether the tuple (Method, Host, URL) is duplicate or not.
+func CheckHTTPTriggerDuplicates(ctx context.Context, client cmd.Client, t *fv1.HTTPTrigger) error {
+	triggers, err := client.FissionClientSet.CoreV1().HTTPTriggers(metav1.NamespaceAll).List(ctx, metav1.ListOptions{})
 	if err != nil {
-				return namespace, currentNS, err
+		return err
+	}
+	for _, ht := range triggers.Items {
+		if ht.ObjectMeta.UID == t.ObjectMeta.UID {
+			// Same resource. No need to check.
+			continue
+		}
+		urlMatch := false
+		if (ht.Spec.RelativeURL != "" && ht.Spec.RelativeURL == t.Spec.RelativeURL) || (ht.Spec.Prefix != nil && t.Spec.Prefix != nil && *ht.Spec.Prefix != "" && *ht.Spec.Prefix == *t.Spec.Prefix) {
+			urlMatch = true
+		}
+		methodMatch := false
+		if ht.Spec.Method == t.Spec.Method && len(ht.Spec.Methods) == len(t.Spec.Methods) {
+			methodMatch = true
+			sort.Strings(ht.Spec.Methods)
+			sort.Strings(t.Spec.Methods)
+			for i, m1 := range ht.Spec.Methods {
+				if m1 != t.Spec.Methods[i] {
+					methodMatch = false
 				}
 			}
 		}
-
-	console.Verbose(2, "Namespace for resource %s ", currentNS)
-
-	return namespace, currentNS, nil
+		if urlMatch && methodMatch && ht.Spec.Method == t.Spec.Method && ht.Spec.Host == t.Spec.Host {
+			return fmt.Errorf("HTTPTrigger with same Host, URL & method already exists (%v)",
+				ht.ObjectMeta.Name)
+		}
+	}
+	return nil
+}
+
+func SecretExists(ctx context.Context, m *metav1.ObjectMeta, kClient kubernetes.Interface) error {
+
+	_, err := kClient.CoreV1().Secrets(m.Namespace).Get(ctx, m.Name, metav1.GetOptions{})
+	return err
+}
+
+func ConfigMapExists(ctx context.Context, m *metav1.ObjectMeta, kClient kubernetes.Interface) error {
+
+	_, err := kClient.CoreV1().ConfigMaps(m.Namespace).Get(ctx, m.Name, metav1.GetOptions{})
+	return err
+}
+
+func GetSvcName(ctx context.Context, kClient kubernetes.Interface, application string) (string, error) {
+	var podNamespace = os.Getenv("POD_NAMESPACE")
+	if podNamespace == "" {
+		podNamespace = "fission"
+	}
+
+	appLabelSelector := "application=" + application
+
+	services, err := kClient.CoreV1().Services(podNamespace).List(ctx, metav1.ListOptions{
+		LabelSelector: appLabelSelector,
+	})
+	if err != nil {
+		return "", err
+	}
+
+	if len(services.Items) > 1 || len(services.Items) == 0 {
+		return "", errors.Errorf("more than one service found for application=%s", application)
+	}
+	service := services.Items[0]
+	return service.Name + "." + podNamespace, nil
+}
+
+// FunctionPodLogs : Get logs for a function directly from pod
+func FunctionPodLogs(ctx context.Context, fnName, ns string, client cmd.Client) (err error) {
+
+	podNs := "fission-function"
+
+	if len(ns) == 0 {
+		ns = metav1.NamespaceDefault
+	} else if ns != metav1.NamespaceDefault {
+		podNs = ns
+	}
+
+	f, err := client.FissionClientSet.CoreV1().Functions(ns).Get(ctx, fnName, metav1.GetOptions{})
+	if err != nil {
+		return err
+	}
+
+	// Get function Pods first
+	selector := map[string]string{
+		fv1.FUNCTION_UID:          string(f.ObjectMeta.UID),
+		fv1.ENVIRONMENT_NAME:      f.Spec.Environment.Name,
+		fv1.ENVIRONMENT_NAMESPACE: f.Spec.Environment.Namespace,
+	}
+	podList, err := client.KubernetesClient.CoreV1().Pods(podNs).List(ctx, metav1.ListOptions{
+		LabelSelector: labels.Set(selector).AsSelector().String(),
+	})
+	if err != nil {
+		return err
+	}
+
+	// Get the logs for last Pod executed
+	pods := podList.Items
+	sort.Slice(pods, func(i, j int) bool {
+		rv1, _ := strconv.ParseInt(pods[i].ObjectMeta.ResourceVersion, 10, 32)
+		rv2, _ := strconv.ParseInt(pods[j].ObjectMeta.ResourceVersion, 10, 32)
+		return rv1 > rv2
+	})
+
+	if len(pods) <= 0 {
+		return errors.New("no active pods found")
+
+	}
+
+	// get the pod with highest resource version
+	err = getContainerLog(ctx, client.KubernetesClient, f, &pods[0])
+	if err != nil {
+		return errors.Wrapf(err, "error getting container logs")
+
+	}
+	return err
+}
+
+func getContainerLog(ctx context.Context, kubernetesClient kubernetes.Interface, fn *fv1.Function, pod *v1.Pod) (err error) {
+	seq := strings.Repeat("=", 35)
+
+	for _, container := range pod.Spec.Containers {
+		podLogOpts := v1.PodLogOptions{Container: container.Name} // Only the env container, not fetcher
+		podLogsReq := kubernetesClient.CoreV1().Pods(pod.Namespace).GetLogs(pod.ObjectMeta.Name, &podLogOpts)
+
+		podLogs, err := podLogsReq.Stream(ctx)
+		if err != nil {
+			return errors.Wrapf(err, "error streaming pod log")
+		}
+
+		msg := fmt.Sprintf("\n%v\nFunction: %v\nEnvironment: %v\nNamespace: %v\nPod: %v\nContainer: %v\nNode: %v\n%v\n", seq,
+			fn.ObjectMeta.Name, fn.Spec.Environment.Name, pod.Namespace, pod.Name, container.Name, pod.Spec.NodeName, seq)
+
+		if _, err := io.WriteString(os.Stdout, msg); err != nil {
+			return errors.Wrapf(err, "error copying pod log")
+		}
+
+		_, err = io.Copy(os.Stdout, podLogs)
+		if err != nil {
+			return errors.Wrapf(err, "error copying pod log")
+		}
+
+		podLogs.Close()
+	}
+
+	return nil
 }

pkg/fission-cli/util/util_test.go

@@ -65,10 +65,10 @@ func TestGetEnvVarFromStringSlice(t *testing.T) {
 	}
 }
 
-func TestGetConfig(t *testing.T) {
-	response, err := GetKubernetesNamespace("")
-	if err != nil {
-		t.Log(err)
-	}
-	t.Log("Current NS: ", response)
-}
+// func TestGetConfig(t *testing.T) {
+// 	response, err := GetKubernetesNamespace("")
+// 	if err != nil {
+// 		t.Log(err)
+// 	}
+// 	t.Log("Current NS: ", response)
+// }

pkg/healthcheck/healthcheck.go

@@ -24,7 +24,8 @@ import (
 	"k8s.io/client-go/kubernetes"
 
 	fv1 "github.com/fission/fission/pkg/apis/core/v1"
-	"github.com/fission/fission/pkg/controller/client"
+	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
+	"github.com/fission/fission/pkg/fission-cli/cmd"
 	"github.com/fission/fission/pkg/fission-cli/util"
 )
 
@@ -50,18 +51,11 @@ type Category struct {
 
 type Checker struct {
 	successMsg string
-	check      func(ctx context.Context) error
-}
-
-type Options struct {
-	KubeContext   string
-	FissionClient client.Interface
+	check      func(ctx context.Context, input cli.Input, client cmd.Client) error
 }
 
 type HealthChecker struct {
 	categories       []*Category
-	*Options
-
 	kubeAPI          kubernetes.Interface
 	fissionNamespace string
 }
@@ -120,8 +114,8 @@ func (hc *HealthChecker) CheckServiceStatus(ctx context.Context, namespace strin
 	return nil
 }
 
-func (hc *HealthChecker) CheckFissionVersion(ctx context.Context) error {
-	ver := util.GetVersion(ctx, hc.FissionClient)
+func (hc *HealthChecker) CheckFissionVersion(ctx context.Context, input cli.Input, client cmd.Client) error {
+	ver := util.GetVersion(ctx, input, client)
 
 	clientVersion := ver.Client["fission/core"].Version
 	serverVersion := ver.Server["fission/core"].Version
@@ -148,7 +142,7 @@ func (hc *HealthChecker) allCategories() []*Category {
 			[]Checker{
 				{
 					successMsg: "kubernetes version is compatible",
-					check: func(ctx context.Context) (err error) {
+					check: func(ctx context.Context, input cli.Input, client cmd.Client) (err error) {
 						return hc.CheckKubeVersion()
 					},
 				},
@@ -160,25 +154,25 @@ func (hc *HealthChecker) allCategories() []*Category {
 			[]Checker{
 				{
 					successMsg: "controller is running fine",
-					check: func(ctx context.Context) error {
+					check: func(ctx context.Context, input cli.Input, client cmd.Client) error {
 						return hc.CheckServiceStatus(ctx, hc.fissionNamespace, "controller")
 					},
 				},
 				{
 					successMsg: "executor is running fine",
-					check: func(ctx context.Context) error {
+					check: func(ctx context.Context, input cli.Input, client cmd.Client) error {
 						return hc.CheckServiceStatus(ctx, hc.fissionNamespace, "executor")
 					},
 				},
 				{
 					successMsg: "router is running fine",
-					check: func(ctx context.Context) error {
+					check: func(ctx context.Context, input cli.Input, client cmd.Client) error {
 						return hc.CheckServiceStatus(ctx, hc.fissionNamespace, "router")
 					},
 				},
 				{
 					successMsg: "storagesvc is running fine",
-					check: func(ctx context.Context) error {
+					check: func(ctx context.Context, input cli.Input, client cmd.Client) error {
 						return hc.CheckServiceStatus(ctx, hc.fissionNamespace, "storagesvc")
 					},
 				},
@@ -190,8 +184,8 @@ func (hc *HealthChecker) allCategories() []*Category {
 			[]Checker{
 				{
 					successMsg: "fission is up-to-date",
-					check: func(ctx context.Context) error {
-						return hc.CheckFissionVersion(ctx)
+					check: func(ctx context.Context, input cli.Input, client cmd.Client) error {
+						return hc.CheckFissionVersion(ctx, input, client)
 					},
 				},
 			},
@@ -200,15 +194,12 @@ func (hc *HealthChecker) allCategories() []*Category {
 	}
 }
 
-func NewHealthChecker(categoryIDs []CategoryID, options *Options) *HealthChecker {
+func NewHealthChecker(cmd cmd.Client, categoryIDs []CategoryID) *HealthChecker {
 	hc := &HealthChecker{
-		Options: options,
+		kubeAPI:          cmd.KubernetesClient,
+		fissionNamespace: "fission",
 	}
 
-	_, clientset, _ := util.GetKubernetesClient(hc.KubeContext)
-	hc.kubeAPI = clientset
-	hc.fissionNamespace = "fission"
-
 	hc.categories = hc.allCategories()
 
 	checkMap := map[CategoryID]struct{}{}
@@ -224,13 +215,13 @@ func NewHealthChecker(categoryIDs []CategoryID, options *Options) *HealthChecker
 	return hc
 }
 
-func RunChecks(ctx context.Context, hc *HealthChecker) {
+func RunChecks(ctx context.Context, input cli.Input, client cmd.Client, hc *HealthChecker) {
 	for _, c := range hc.categories {
 		if c.enabled {
 			fmt.Println(c.ID)
 			fmt.Println(strings.Repeat("-", 20))
 			for _, checker := range c.checkers {
-				err := checker.check(ctx)
+				err := checker.check(ctx, input, client)
 				if err != nil {
 					fmt.Printf("%s %s\n", failStatus, err)
 				} else {

pkg/storagesvc/client/client.go

@@ -185,6 +185,21 @@ func (c *Client) Download(ctx context.Context, id string, filePath string) error
 	return nil
 }
 
+// Download fetches the file identified by ID to the local file path.
+// filePath must not exist.
+func (c *Client) GetFile(ctx context.Context, id string) (resp *http.Response, err error) {
+	// url for id
+	url := c.GetUrl(id)
+
+	// make request
+	resp, err = ctxhttp.Get(ctx, c.httpClient, url)
+	if err != nil {
+		return resp, err
+	}
+
+	return resp, err
+}
+
 func (c *Client) Delete(ctx context.Context, id string) error {
 	url := c.GetUrl(id)
 

pkg/utils/otel/log.go

@@ -22,8 +22,8 @@ import (
 	"go.uber.org/zap"
 )
 
-func LoggerWithTraceID(context context.Context, logger *zap.Logger) *zap.Logger {
-	if span := trace.SpanContextFromContext(context); span.TraceID().IsValid() {
+func LoggerWithTraceID(ctx context.Context, logger *zap.Logger) *zap.Logger {
+	if span := trace.SpanContextFromContext(ctx); span.TraceID().IsValid() {
 		return logger.With(zap.String("trace_id", span.TraceID().String()))
 	}
 	return logger