mirror of https://github.com/knative/client.git
131 lines
3.5 KiB
Go
131 lines
3.5 KiB
Go
// Copyright © 2019 The Knative Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package trigger
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import (
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"errors"
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"fmt"
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"strings"
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"k8s.io/cli-runtime/pkg/genericclioptions"
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"github.com/spf13/cobra"
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v1beta1 "knative.dev/eventing/pkg/apis/eventing/v1beta1"
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"knative.dev/client/lib/printing"
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"knative.dev/client/pkg/kn/commands"
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"knative.dev/client/pkg/printers"
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)
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var describeExample = `
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# Describe a trigger with name 'my-trigger'
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kn trigger describe my-trigger
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# Describe a trigger 'my-trigger' in YAML format
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kn trigger describe my-trigger -o yaml`
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// NewTriggerDescribeCommand returns a new command for describe a trigger
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func NewTriggerDescribeCommand(p *commands.KnParams) *cobra.Command {
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// For machine readable output
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machineReadablePrintFlags := genericclioptions.NewPrintFlags("")
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command := &cobra.Command{
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Use: "describe NAME",
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Short: "Show details of a trigger",
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Example: describeExample,
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RunE: func(cmd *cobra.Command, args []string) error {
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if len(args) != 1 {
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return errors.New("'kn trigger describe' requires name of the trigger as single argument")
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}
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name := args[0]
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// get namespace
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namespace, err := p.GetNamespace(cmd)
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if err != nil {
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return err
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}
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// get client
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eventingClient, err := p.NewEventingClient(namespace)
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if err != nil {
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return err
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}
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trigger, err := eventingClient.GetTrigger(name)
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if err != nil {
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return err
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}
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out := cmd.OutOrStdout()
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// Print out machine readable output if requested
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if machineReadablePrintFlags.OutputFlagSpecified() {
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printer, err := machineReadablePrintFlags.ToPrinter()
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if err != nil {
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return err
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}
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return printer.PrintObj(trigger, out)
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}
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dw := printers.NewPrefixWriter(out)
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printDetails, err := cmd.Flags().GetBool("verbose")
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if err != nil {
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return err
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}
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writeTrigger(dw, trigger, printDetails)
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dw.WriteLine()
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if err := dw.Flush(); err != nil {
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return err
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}
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// Revisions summary info
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printing.DescribeSink(dw, "Sink", trigger.Namespace, &trigger.Spec.Subscriber)
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dw.WriteLine()
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if err := dw.Flush(); err != nil {
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return err
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}
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// Condition info
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commands.WriteConditions(dw, trigger.Status.Conditions, printDetails)
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if err := dw.Flush(); err != nil {
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return err
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}
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return nil
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},
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}
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flags := command.Flags()
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commands.AddNamespaceFlags(flags, false)
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flags.BoolP("verbose", "v", false, "More output.")
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machineReadablePrintFlags.AddFlags(command)
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command.Flag("output").Usage = fmt.Sprintf("Output format. One of: %s.", strings.Join(machineReadablePrintFlags.AllowedFormats(), "|"))
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return command
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}
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func writeTrigger(dw printers.PrefixWriter, trigger *v1beta1.Trigger, printDetails bool) {
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commands.WriteMetadata(dw, &trigger.ObjectMeta, printDetails)
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dw.WriteAttribute("Broker", trigger.Spec.Broker)
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if trigger.Spec.Filter != nil && trigger.Spec.Filter.Attributes != nil {
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subWriter := dw.WriteAttribute("Filter", "")
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for key, value := range trigger.Spec.Filter.Attributes {
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subWriter.WriteAttribute(key, value)
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}
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}
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}
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