commitchecker: expose version

Signed-off-by: Steve Kuznetsov <skuznets@redhat.com>

commitchecker/commitchecker.go

@@ -6,9 +6,11 @@ import (
 	"os"
 
 	"github.com/openshift/build-machinery-go/commitchecker/commitchecker"
+	"github.com/openshift/build-machinery-go/commitchecker/pkg/version"
 )
 
 func main() {
+	_, _ = fmt.Fprintf(os.Stdout, "commitchecker verson %v\n", version.Get().String())
 	opts := commitchecker.DefaultOptions()
 	opts.Bind(flag.CommandLine)
 	flag.Parse()

commitchecker/go.mod

@@ -4,5 +4,6 @@ go 1.20
 
 require (
 	github.com/google/go-cmp v0.5.9
+	k8s.io/apimachinery v0.28.4
 	sigs.k8s.io/yaml v1.4.0
 )

commitchecker/go.sum

@@ -2,5 +2,7 @@ github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
 github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+k8s.io/apimachinery v0.28.4 h1:zOSJe1mc+GxuMnFzD4Z/U1wst50X28ZNsn5bhgIIao8=
+k8s.io/apimachinery v0.28.4/go.mod h1:wI37ncBvfAoswfq626yPTe6Bz1c22L7uaJ8dho83mgg=
 sigs.k8s.io/yaml v1.4.0 h1:Mk1wCc2gy/F0THH0TAp1QYyJNzRm2KCLy3o5ASXVI5E=
 sigs.k8s.io/yaml v1.4.0/go.mod h1:Ejl7/uTz7PSA4eKMyQCUTnhZYNmLIl+5c2lQPGR2BPY=

commitchecker/pkg/version/version.go

@@ -0,0 +1,41 @@
+package version
+
+import (
+	"fmt"
+	"runtime"
+
+	"k8s.io/apimachinery/pkg/version"
+)
+
+var (
+	// commitFromGit is a constant representing the source version that
+	// generated this build. It should be set during build via -ldflags.
+	commitFromGit string
+	// versionFromGit is a constant representing the version tag that
+	// generated this build. It should be set during build via -ldflags.
+	versionFromGit = "unknown"
+	// major version
+	majorFromGit string
+	// minor version
+	minorFromGit string
+	// build date in ISO8601 format, output of $(date -u +'%Y-%m-%dT%H:%M:%SZ')
+	buildDate string
+	// state of git tree, either "clean" or "dirty"
+	gitTreeState string
+)
+
+// Get returns the overall codebase version. It's for detecting
+// what code a binary was built from.
+func Get() version.Info {
+	return version.Info{
+		Major:        majorFromGit,
+		Minor:        minorFromGit,
+		GitCommit:    commitFromGit,
+		GitVersion:   versionFromGit,
+		GitTreeState: gitTreeState,
+		BuildDate:    buildDate,
+		GoVersion:    runtime.Version(),
+		Compiler:     runtime.Compiler,
+		Platform:     fmt.Sprintf("%s/%s", runtime.GOOS, runtime.GOARCH),
+	}
+}