Refactor HTTP trigger command (#1367)

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

@@ -0,0 +1,74 @@
+/*
+Copyright 2019 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 httptrigger
+
+import (
+	"github.com/pkg/errors"
+
+	fv1 "github.com/fission/fission/pkg/apis/fission.io/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"
+)
+
+type ListSubCommand struct {
+	client             *client.Client
+	triggerNamespace   string
+	filterFunctionName string
+}
+
+func List(flags cli.Input) error {
+	opts := ListSubCommand{
+		client: cmd.GetServer(flags),
+	}
+	return opts.do(flags)
+}
+
+func (opts *ListSubCommand) do(flags cli.Input) error {
+	err := opts.complete(flags)
+	if err != nil {
+		return err
+	}
+	return opts.run(flags)
+}
+
+// complete creates a environment objects and populates it with default value and CLI inputs.
+func (opts *ListSubCommand) complete(flags cli.Input) error {
+	opts.triggerNamespace = flags.String("triggerNamespace")
+	opts.filterFunctionName = flags.String("function")
+	return nil
+}
+
+func (opts *ListSubCommand) run(flags cli.Input) error {
+	hts, err := opts.client.HTTPTriggerList(opts.triggerNamespace)
+	if err != nil {
+		return errors.Wrap(err, "error listing HTTP triggers")
+	}
+
+	var triggers []fv1.HTTPTrigger
+	for _, ht := range hts {
+		// TODO: list canary http triggers as well.
+		if len(opts.filterFunctionName) == 0 ||
+			(len(opts.filterFunctionName) > 0 && opts.filterFunctionName == ht.Spec.FunctionReference.Name) {
+
+			triggers = append(triggers, ht)
+		}
+	}
+
+	printHtSummary(triggers)
+	return nil
+}