mirror of https://github.com/knative/client.git
105 lines
2.7 KiB
Go
105 lines
2.7 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 version
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import (
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"encoding/json"
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"fmt"
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"github.com/spf13/cobra"
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"sigs.k8s.io/yaml"
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"knative.dev/client/pkg/kn/commands"
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)
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var Version string
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var BuildDate string
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var GitRevision string
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// update this var as we add more deps
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var apiVersions = map[string][]string{
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"serving": {
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"serving.knative.dev/v1 (knative-serving v0.20.0)",
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},
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"eventing": {
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"sources.knative.dev/v1alpha2 (knative-eventing v0.20.0)",
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"eventing.knative.dev/v1beta1 (knative-eventing v0.20.0)",
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},
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}
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type knVersion struct {
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Version string
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BuildDate string
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GitRevision string
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SupportedAPIs map[string][]string
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}
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// NewVersionCommand implements 'kn version' command
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func NewVersionCommand(p *commands.KnParams) *cobra.Command {
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versionCmd := &cobra.Command{
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Use: "version",
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Short: "Show the version of this client",
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RunE: func(cmd *cobra.Command, args []string) error {
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if cmd.Flags().Changed("output") {
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return printVersionMachineReadable(cmd)
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}
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out := cmd.OutOrStdout()
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fmt.Fprintf(out, "Version: %s\n", Version)
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fmt.Fprintf(out, "Build Date: %s\n", BuildDate)
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fmt.Fprintf(out, "Git Revision: %s\n", GitRevision)
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fmt.Fprintf(out, "Supported APIs:\n")
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fmt.Fprintf(out, "* Serving\n")
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for _, api := range apiVersions["serving"] {
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fmt.Fprintf(out, " - %s\n", api)
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}
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fmt.Fprintf(out, "* Eventing\n")
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for _, api := range apiVersions["eventing"] {
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fmt.Fprintf(out, " - %s\n", api)
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}
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return nil
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},
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}
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versionCmd.Flags().StringP(
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"output",
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"o",
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"",
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"Output format. One of: json|yaml.",
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)
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return versionCmd
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}
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func printVersionMachineReadable(cmd *cobra.Command) error {
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out := cmd.OutOrStdout()
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v := knVersion{Version, BuildDate, GitRevision, apiVersions}
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format := cmd.Flag("output").Value.String()
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switch format {
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case "JSON", "json":
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b, err := json.MarshalIndent(v, "", "\t")
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if err != nil {
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return err
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}
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fmt.Fprint(out, string(b))
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case "YAML", "yaml":
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b, err := yaml.Marshal(v)
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if err != nil {
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return err
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}
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fmt.Fprint(out, string(b))
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default:
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return fmt.Errorf("Invalid value for output flag, choose one among 'json' or 'yaml'.")
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}
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return nil
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}
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