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version: add Info func to expose EmbeddedInfo

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To be used to in a different repo.

Updates tailscale/corp#1297

Signed-off-by: Maisem Ali <maisem@tailscale.com>
This commit is contained in:
Maisem Ali 2024-05-15 12:59:44 -04:00 committed by Maisem Ali
parent 7f83f9fc83
commit e3dec086e6
1 changed files with 35 additions and 24 deletions
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59
version/version.go
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@ -77,7 +77,7 @@ func Long() string {
if !bi.valid {
return strings.TrimSpace(tailscaleroot.VersionDotTxt) + "-ERR-BuildInfo"
}
return fmt.Sprintf("%s-dev%s-t%s%s", strings.TrimSpace(tailscaleroot.VersionDotTxt), bi.commitDate, bi.commitAbbrev(), dirtyString())
return fmt.Sprintf("%s-dev%s-t%s%s", strings.TrimSpace(tailscaleroot.VersionDotTxt), bi.CommitDate, bi.commitAbbrev(), dirtyString())
})
}
@ -97,47 +97,58 @@ func Short() string {
if !bi.valid {
return strings.TrimSpace(tailscaleroot.VersionDotTxt) + "-ERR-BuildInfo"
}
return strings.TrimSpace(tailscaleroot.VersionDotTxt) + "-dev" + bi.commitDate
return strings.TrimSpace(tailscaleroot.VersionDotTxt) + "-dev" + bi.CommitDate
})
}
type embeddedInfo struct {
valid bool
commit string
commitDate string
dirty bool
}
func (i embeddedInfo) commitAbbrev() string {
if len(i.commit) >= 9 {
return i.commit[:9]
// Info returns information about the version embedded in the binary.
// If the version information is not present, the second return value is false.
func Info() (EmbeddedInfo, bool) {
ei := getEmbeddedInfo()
if !ei.valid {
return EmbeddedInfo{}, false
}
return i.commit
return ei, true
}
var getEmbeddedInfo = lazy.SyncFunc(func() embeddedInfo {
// EmbeddedInfo contains information about the version embedded in the binary.
type EmbeddedInfo struct {
valid bool
Commit string
CommitDate string
Dirty bool
}
func (i EmbeddedInfo) commitAbbrev() string {
if len(i.Commit) >= 9 {
return i.Commit[:9]
}
return i.Commit
}
var getEmbeddedInfo = lazy.SyncFunc(func() EmbeddedInfo {
bi, ok := debug.ReadBuildInfo()
if !ok {
return embeddedInfo{}
return EmbeddedInfo{}
}
ret := embeddedInfo{valid: true}
ret := EmbeddedInfo{valid: true}
for _, s := range bi.Settings {
switch s.Key {
case "vcs.revision":
ret.commit = s.Value
ret.Commit = s.Value
case "vcs.time":
if len(s.Value) >= len("yyyy-mm-dd") {
ret.commitDate = s.Value[:len("yyyy-mm-dd")]
ret.commitDate = strings.ReplaceAll(ret.commitDate, "-", "")
ret.CommitDate = s.Value[:len("yyyy-mm-dd")]
ret.CommitDate = strings.ReplaceAll(ret.CommitDate, "-", "")
}
case "vcs.modified":
ret.dirty = s.Value == "true"
ret.Dirty = s.Value == "true"
}
}
if ret.commit == "" || ret.commitDate == "" {
if ret.Commit == "" || ret.CommitDate == "" {
// Build info is present in the binary, but has no useful data. Act as
// if it's missing.
return embeddedInfo{}
return EmbeddedInfo{}
}
return ret
})
@ -146,14 +157,14 @@ func gitCommit() string {
if gitCommitStamp != "" {
return gitCommitStamp
}
return getEmbeddedInfo().commit
return getEmbeddedInfo().Commit
}
func gitDirty() bool {
if gitDirtyStamp {
return true
}
return getEmbeddedInfo().dirty
return getEmbeddedInfo().Dirty
}
func dirtyString() string {