refactor: enhance bird metrics polling with context support

Updated the `startBirdMetricsPoller` function to accept a context parameter, allowing for better control over the polling lifecycle. This change was applied in both `evobgp-all` and `evobgp-api` main files. Additionally, modified the `StartBirdProtocolsPoller` function to handle context cancellation, ensuring graceful shutdown of the polling routine. Introduced a new service in the Docker Compose configuration for logging runtime service outputs, improving observability during deployment.

cmd/evobgp-all/main.go

@@ -51,7 +51,7 @@ func main() {
 	go render.Run(ctx, renderDeps)
 	go deploy.Run(ctx, deployDeps)
 
-	startBirdMetricsPoller()
+	startBirdMetricsPoller(ctx)
 
 	httpSrv := &http.Server{
 		Addr:    cfg.HTTPAddr,
@@ -75,7 +75,7 @@ func main() {
 	log.Printf("%s stopped", platform.ServiceName("evobgp-all"))
 }
 
-func startBirdMetricsPoller() {
+func startBirdMetricsPoller(ctx context.Context) {
 	sock := strings.TrimSpace(os.Getenv("EVOBGP_BIRDC_SOCKET"))
 	if sock == "" {
 		return
@@ -85,7 +85,7 @@ func startBirdMetricsPoller() {
 		interval = d
 	}
 	bin := strings.TrimSpace(os.Getenv("EVOBGP_BIRDC_BIN"))
-	observability.StartBirdProtocolsPoller(sock, bin, interval,
+	observability.StartBirdProtocolsPoller(ctx, sock, bin, interval,
 		func(ctx context.Context, socket, birdcBin string) (string, error) {
 			return birdfmt.ShowProtocols(ctx, socket, birdcBin)
 		},

cmd/evobgp-api/main.go

@@ -35,11 +35,11 @@ func main() {
 	defer srv.Close()
 
 	observability.SetBuildInfo("0.1.0", strings.TrimSpace(os.Getenv("EVOBGP_GIT_SHA")))
-	startBirdMetricsPoller()
-
 	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
 	defer stop()
 
+	startBirdMetricsPoller(ctx)
+
 	httpSrv := &http.Server{
 		Addr:    cfg.HTTPAddr,
 		Handler: srv.Handler(),
@@ -68,7 +68,7 @@ func main() {
 	log.Printf("%s stopped", platform.ServiceName("evobgp-api"))
 }
 
-func startBirdMetricsPoller() {
+func startBirdMetricsPoller(ctx context.Context) {
 	sock := strings.TrimSpace(os.Getenv("EVOBGP_BIRDC_SOCKET"))
 	if sock == "" {
 		return
@@ -78,7 +78,7 @@ func startBirdMetricsPoller() {
 		interval = d
 	}
 	bin := strings.TrimSpace(os.Getenv("EVOBGP_BIRDC_BIN"))
-	observability.StartBirdProtocolsPoller(sock, bin, interval,
+	observability.StartBirdProtocolsPoller(ctx, sock, bin, interval,
 		func(ctx context.Context, socket, birdcBin string) (string, error) {
 			return birdfmt.ShowProtocols(ctx, socket, birdcBin)
 		},