chore: Report git version/tag/hash in the startup logs

Makefile

@@ -1,3 +1,17 @@
+# Build variables
+PACKAGE = github.com/l7mp/stunner
+BUILD_DIR ?= bin/
+VERSION ?= $(shell (git describe --tags --abbrev=8 --always --long) | tr "/" "-")
+COMMIT_HASH ?= $(shell git rev-parse --short HEAD 2>/dev/null)
+BUILD_DATE ?= $(shell date +%FT%T%z)
+LDFLAGS += -X main.version=${VERSION} -X main.commitHash=${COMMIT_HASH} -X main.buildDate=${BUILD_DATE}
+
+ifeq (${VERBOSE}, 1)
+ifeq ($(filter -v,${GOARGS}),)
+	GOARGS += -v
+endif
+endif
+
 .PHONY: all
 all: build
 
@@ -14,20 +28,16 @@ vet: ## Run go vet against code.
 	go vet ./...
 
 .PHONY: test
-test: manifests generate fmt vet test ## Run tests.
+test: generate fmt vet
+	go test ./... -v
 
 ##@ Build
 
 .PHONY: build
-build: generate fmt vet ## Build binary.
-	go build -o bin/stunnerd cmd/stunnerd/main.go
-	go build -o bin/turncat cmd/turncat/main.go
-
-.PHONY: run
-run: manifests generate fmt vet ## Run a controller from your host.
-	go run cmd/stunnerd/main.go
+build: generate fmt vet
+	go build ${GOARGS} -ldflags "${LDFLAGS}" -o ${BUILD_DIR}/stunnerd cmd/stunnerd/main.go
+	go build ${GOARGS} -o ${BUILD_DIR}/turncat cmd/turncat/main.go
 
-# clean up generated files
 .PHONY: clean
 clean:
 	echo 'Use "make generate` to autogenerate server code' > pkg/server/server.go

cmd/stunnerd/main.go

@@ -13,10 +13,15 @@ import (
 
 	"github.com/l7mp/stunner"
 	stnrv1 "github.com/l7mp/stunner/pkg/apis/v1"
+	"github.com/l7mp/stunner/pkg/buildinfo"
 	cdsclient "github.com/l7mp/stunner/pkg/config/client"
 )
 
-// usage: stunnerd -v turn://user1:passwd1@127.0.0.1:3478?transport=udp
+var (
+	version    = "dev"
+	commitHash = "n/a"
+	buildDate  = "<unknown>"
+)
 
 func main() {
 	os.Args[0] = "stunnerd"
@@ -74,7 +79,8 @@ func main() {
 
 	log := st.GetLogger().NewLogger("stunnerd")
 
-	log.Infof("starting stunnerd instance %q", st.GetId())
+	buildInfo := buildinfo.BuildInfo{Version: version, CommitHash: commitHash, BuildDate: buildDate}
+	log.Infof("starting stunnerd id %q, STUNner %s ", st.GetId(), buildInfo.String())
 
 	conf := make(chan *stnrv1.StunnerConfig, 1)
 	defer close(conf)

pkg/buildinfo/build_info.go

@@ -0,0 +1,13 @@
+package buildinfo
+
+import "fmt"
+
+type BuildInfo struct {
+	Version    string
+	CommitHash string
+	BuildDate  string
+}
+
+func (i BuildInfo) String() string {
+	return fmt.Sprintf("version %s (%s) built on %s", i.Version, i.CommitHash, i.BuildDate)
+}