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version.go
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version.go
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//
// Copyright 2023 The Chainloop 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 cmd
import (
"crypto/sha256"
"fmt"
"hash"
"io"
"os"
"github.com/spf13/cobra"
)
const devVersion = "dev"
var Version = devVersion
type info struct {
Version string
Digest string
}
func NewVersionCmd() *cobra.Command {
return &cobra.Command{
Use: "version",
Short: "Command line version",
Run: func(cmd *cobra.Command, args []string) {
cmd.Printf("%s version %s\n", appName, Version)
},
}
}
func executableInfo() (*info, error) {
h, err := executableDigest()
if err != nil {
return nil, err
}
return &info{
Version: Version,
Digest: fmt.Sprintf("sha256:%x", h.Sum(nil)),
}, nil
}
func executableDigest() (hash.Hash, error) {
ex, err := os.Executable()
if err != nil {
return nil, err
}
f, err := os.Open(ex)
if err != nil {
return nil, err
}
defer f.Close()
h := sha256.New()
if _, err := io.Copy(h, f); err != nil {
return nil, err
}
return h, nil
}