Make AdoptExistingResources optional (#1453)

charts/README.md

@@ -66,6 +66,7 @@ Parameter | Description | Default
 `prometheus.serviceEndpoint` | If prometheus.enabled is false, please assign the prometheus service URL that is accessible by components. | `nil`
 `canaryDeployment.enabled` | Set to true if you need canary deployment feature | `true` in `fission-all`, `false` in `fission-core`
 `extraCoreComponentPodConfig` | Extend the container specs for the core fission pods. Can be used to add things like affinty/tolerations/nodeSelectors/etc. | None
+`executor.adoptExistingResources` | If true, executor will try to adopt existing resources created by the old executor instance. | `false`
 `router.deployAsDaemonSet` | Deploy router as DaemonSet instead of Deployment | `false`
 `router.svcAddressMaxRetries` | Max retries times for router to retry on a certain service URL returns from cache/executor | `5`
 `router.svcAddressUpdateTimeout` | The length of update lock expiry time for router to get a service URL returns from executor | `30`

charts/fission-all/templates/deployment.yaml

@@ -215,6 +215,8 @@ spec:
           value: "{{ .Values.pullPolicy }}"
         - name: RUNTIME_IMAGE_PULL_POLICY
           value: "{{ .Values.pullPolicy }}"
+        - name: ADOPT_EXISTING_RESOURCES
+          value: {{ .Values.executor.adoptExistingResources | default false | quote }}
         - name: ENABLE_ISTIO
           value: "{{ .Values.enableIstio }}"
         - name: TRACE_JAEGER_COLLECTOR_ENDPOINT

charts/fission-all/values.yaml

@@ -65,6 +65,9 @@ logger:
   ## security context and set privileged to true.
   enableSecurityContext: false
 
+executor:
+  adoptExistingResources: false
+
 ## Router config
 router:
   deployAsDaemonSet: false

charts/fission-core/templates/deployment.yaml

@@ -217,6 +217,8 @@ spec:
           value: "{{ .Values.traceCollectorEndpoint }}"
         - name: TRACING_SAMPLING_RATE
           value: {{ .Values.traceSamplingRate | default "0.5" | quote }}
+        - name: ADOPT_EXISTING_RESOURCES
+          value: {{ .Values.executor.adoptExistingResources | default false | quote }}
         - name: ENABLE_ISTIO
           value: "{{ .Values.enableIstio }}"
         - name: FETCHER_MINCPU

charts/fission-core/values.yaml

@@ -45,6 +45,9 @@ builderNamespace: fission-builder
 ## Enable istio integration
 enableIstio: false
 
+executor:
+  adoptExistingResources: false
+
 ## Router config
 router:
   deployAsDaemonSet: false

pkg/executor/executor.go

@@ -20,6 +20,8 @@ import (
 	"context"
 	"fmt"
 	"net/http"
+	"os"
+	"strconv"
 	"strings"
 	"sync"
 	"time"
@@ -242,16 +244,18 @@ func StartExecutor(logger *zap.Logger, functionNamespace string, envBuilderNames
 	executorTypes[gpm.GetTypeName()] = gpm
 	executorTypes[ndm.GetTypeName()] = ndm
 
+	if ok, _ := strconv.ParseBool(os.Getenv("ADOPT_EXISTING_RESOURCES")); ok {
 		wg := &sync.WaitGroup{}
 		for _, et := range executorTypes {
 			wg.Add(1)
 			go func(et executortype.ExecutorType) {
 				defer wg.Done()
-			et.AdoptOrphanResources()
+				et.AdoptExistingResources()
 			}(et)
 		}
 		// set hard timeout for resource adoption
 		util.WaitTimeout(wg, 30*time.Second)
+	}
 
 	cms := cms.MakeConfigSecretController(logger, fissionClient, kubernetesClient, executorTypes)
 

pkg/executor/executortype/executortype.go

@@ -52,5 +52,5 @@ type ExecutorType interface {
 	RefreshFuncPods(*zap.Logger, fv1.Function) error
 
 	// AdoptOrphanResources adopts existing resources created by the deleted executor.
-	AdoptOrphanResources()
+	AdoptExistingResources()
 }

pkg/executor/executortype/newdeploy/newdeploymgr.go

@@ -244,7 +244,7 @@ func (deploy *NewDeploy) RefreshFuncPods(logger *zap.Logger, f fv1.Function) err
 	return nil
 }
 
-func (deploy *NewDeploy) AdoptOrphanResources() {
+func (deploy *NewDeploy) AdoptExistingResources() {
 	l := map[string]string{
 		types.EXECUTOR_TYPE: string(fv1.ExecutorTypeNewdeploy),
 	}

pkg/executor/executortype/poolmgr/gpm.go

@@ -243,7 +243,7 @@ func (gpm *GenericPoolManager) RefreshFuncPods(logger *zap.Logger, f fv1.Functio
 	return nil
 }
 
-func (gpm *GenericPoolManager) AdoptOrphanResources() {
+func (gpm *GenericPoolManager) AdoptExistingResources() {
 	envs, err := gpm.fissionClient.Environments(metav1.NamespaceAll).List(metav1.ListOptions{})
 	if err != nil {
 		gpm.logger.Error("error getting environment list", zap.Error(err))
@@ -573,9 +573,12 @@ func (gpm *GenericPoolManager) idleObjectReaper() {
 				}
 				if deleted {
 					for i := range fsvc.KubernetesObjects {
-						gpm.logger.Debug("release idle function resources",
-							zap.String("function", fsvc.Name), zap.String("address", fsvc.Address),
-							zap.String("executor", string(fsvc.Executor)))
+						gpm.logger.Info("release idle function resources",
+							zap.String("function", fsvc.Function.Name),
+							zap.String("address", fsvc.Address),
+							zap.String("executor", string(fsvc.Executor)),
+							zap.String("pod", fsvc.Name),
+						)
 						reaper.CleanupKubeObject(gpm.logger, gpm.kubernetesClient, &fsvc.KubernetesObjects[i])
 						time.Sleep(50 * time.Millisecond)
 					}