Add cpu profiling

cmd/dogtamer.go

@@ -6,6 +6,7 @@ import (
 	"net/http"
 	"os"
 	"os/signal"
+	"runtime/pprof"
 	"strings"
 
 	"github.com/urfave/cli/v2"
@@ -41,6 +42,10 @@ func main() {
 				Usage:   "Path to config-file",
 				Aliases: []string{"c"},
 			},
+			&cli.StringFlag{
+				Name:  "cpu-profile",
+				Usage: "Profile cpu usage and write to file",
+			},
 		},
 		Commands: []*cli.Command{
 			{
@@ -69,11 +74,25 @@ func ActionServe(c *cli.Context) error {
 	cfg.DebugLog(logger)
 
 	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
 	// Setup RTMP-server
 	rtmpServer := server.NewRTMPServer(ctx, cfg.RTMPListenAddr)
 	rtmpServer.Logger = logger
 	rtmpServer.Hostname = cfg.Hostname
 
+	if c.IsSet("cpu-profile") {
+		filename := c.String("cpu-profile")
+		logger.Infow("CPU-profiling enabled.", "filename", filename)
+		f, err := os.Create(filename)
+		if err != nil {
+			return cli.Exit(fmt.Sprintf("Unable to create cpu-profile file '%s': %s", filename, err), 1)
+		}
+		defer f.Close()
+
+		pprof.StartCPUProfile(f)
+		defer pprof.StopCPUProfile()
+	}
+
 	// Setup web-server
 	webDone := make(chan struct{})
 	if cfg.HTTPServerEnable {

version.go

@@ -2,7 +2,7 @@ package dogtamer
 
 import "fmt"
 
-const Version string = "v0.1.7"
+const Version string = "v0.1.8"
 
 var Build string