/
version.go
85 lines (73 loc) · 2.21 KB
/
version.go
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/*
Copyright 2018 The Kubernetes 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 version
import (
"encoding/json"
"fmt"
"io"
"github.com/pkg/errors"
"github.com/spf13/cobra"
"sigs.k8s.io/cluster-api-provider-aws/version"
"sigs.k8s.io/yaml"
)
// Version provides the version information of clusterawsadm
type Version struct {
ClientVersion *version.Info `json:"awsProviderVersion"`
}
// VersionCmd provides the version information clusterawsadm.
func VersionCmd(out io.Writer) *cobra.Command {
cmd := &cobra.Command{
Use: "version",
Short: "Print version of clusterawsadm",
Args: cobra.ExactArgs(0),
RunE: func(cmd *cobra.Command, args []string) error {
return RunVersion(out, cmd)
},
}
cmd.Flags().StringP("output", "o", "", "Output format; available options are 'yaml', 'json' and 'short'")
return cmd
}
// RunVersion provides the version information of clusterawsadm in format depending on arguments
// specified in cobra.Command.
func RunVersion(out io.Writer, cmd *cobra.Command) error {
clientVersion := version.Get()
v := Version{
ClientVersion: &clientVersion,
}
const flag = "output"
of, err := cmd.Flags().GetString(flag)
if err != nil {
return errors.Wrapf(err, "error accessing flag %s for command %s", flag, cmd.Name())
}
switch of {
case "":
fmt.Fprintf(out, "clusterawsadm version: %#v\n", v.ClientVersion)
case "short":
fmt.Fprintf(out, "%s\n", v.ClientVersion.GitVersion)
case "yaml":
y, err := yaml.Marshal(&v)
if err != nil {
return err
}
fmt.Fprintln(out, string(y))
case "json":
y, err := json.MarshalIndent(&v, "", " ")
if err != nil {
return err
}
fmt.Fprintln(out, string(y))
default:
return errors.Errorf("invalid output format: %s", of)
}
return nil
}