Jan Novak
ae434a7167
New internal/version package: ldflags-stamped Commit with a debug.ReadBuildInfo VCS fallback for host builds. Startup log line carries commit + Go version; --version prints the hash and exits. Makefile computes GIT_COMMIT (12 chars, -dirty on any local change) and passes it to docker-build/buildx; Dockerfile injects it via -ldflags and an org.opencontainers.image.revision label. make build now uses ./cmd — file-argument builds skip Go's automatic VCS stamp. Co-Authored-By: Claude <noreply@anthropic.com>
48 lines
1.1 KiB
Go
48 lines
1.1 KiB
Go
// Package version reports which commit the binary was built from. Docker
|
|
// builds stamp it via -ldflags (the build context has no .git, so Go's
|
|
// automatic VCS stamp is absent there); host builds fall back to that
|
|
// automatic stamp.
|
|
package version
|
|
|
|
import "runtime/debug"
|
|
|
|
// Commit is set at link time via
|
|
// -ldflags "-X <module>/internal/version.Commit=<hash>".
|
|
var Commit string
|
|
|
|
// Resolve returns the commit the binary was built from, or "unknown" when
|
|
// neither the ldflags stamp nor build info is available (e.g. go test).
|
|
func Resolve() string {
|
|
return resolve(Commit, debug.ReadBuildInfo)
|
|
}
|
|
|
|
func resolve(ldflagsCommit string, readBuildInfo func() (*debug.BuildInfo, bool)) string {
|
|
if ldflagsCommit != "" {
|
|
return ldflagsCommit
|
|
}
|
|
bi, ok := readBuildInfo()
|
|
if !ok {
|
|
return "unknown"
|
|
}
|
|
var revision string
|
|
var modified bool
|
|
for _, s := range bi.Settings {
|
|
switch s.Key {
|
|
case "vcs.revision":
|
|
revision = s.Value
|
|
case "vcs.modified":
|
|
modified = s.Value == "true"
|
|
}
|
|
}
|
|
if revision == "" {
|
|
return "unknown"
|
|
}
|
|
if len(revision) > 12 {
|
|
revision = revision[:12]
|
|
}
|
|
if modified {
|
|
revision += "-dirty"
|
|
}
|
|
return revision
|
|
}
|