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version.go
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version.go
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// Package gov4git provides protocol versioning.
package gov4git
import (
_ "embed"
"runtime/debug"
"strings"
"sync"
"time"
)
var (
lk sync.Mutex
versionInfo = VersionInfo{DirtyBuild: true}
)
func GetVersionInfo() VersionInfo {
lk.Lock()
defer lk.Unlock()
return versionInfo
}
type VersionInfo struct {
Version string `json:"version"` // Version is the Go version of the protocol module.
Revision string `json:"revision"` // Revision is the git commit hash of the protocol source.
LastCommit time.Time `json:"last_commit"`
DirtyBuild bool `json:"dirty_build"`
}
func init() {
info, ok := debug.ReadBuildInfo()
if !ok {
return
}
lk.Lock()
defer lk.Unlock()
versionInfo.Version = info.Main.Version
if versionInfo.Version == "(devel)" {
versionInfo.Version = "dev"
}
for _, kv := range info.Settings {
if kv.Value == "" {
continue
}
switch kv.Key {
case "vcs.revision":
versionInfo.Revision = kv.Value
case "vcs.time":
versionInfo.LastCommit, _ = time.Parse(time.RFC3339, kv.Value)
case "vcs.modified":
versionInfo.DirtyBuild = kv.Value == "true"
}
}
}
// Short provides a short string summarizing available version information.
func Short() string {
vi := GetVersionInfo()
parts := make([]string, 0, 3)
if vi.Version != "" {
parts = append(parts, vi.Version)
}
if vi.Revision != "" {
parts = append(parts, "rev")
commit := vi.Revision
if len(commit) > 7 {
commit = commit[:7]
}
parts = append(parts, commit)
parts = append(parts, vi.LastCommit.Format(time.DateOnly))
}
if vi.DirtyBuild {
parts = append(parts, "dirty")
}
if len(parts) == 0 {
return "dev"
}
return strings.Join(parts, "-")
}