added simple log rotator

app/config/config.go

@@ -48,6 +48,7 @@ type Config struct {
 	Datadir   string   `json:"datadir"            yaml:datadir`
 	Hostname  string   `json:"hostname"           yaml:hostname`
 	Hostnames []string `json:"hostnames"          yaml:hostnames`
+	LogLimit  int64    `json:"logLimit"           yaml:logLimit`
 }
 
 func NewConfig() *Config {
@@ -82,6 +83,7 @@ func NewConfig() *Config {
 		//Certpath: certpath,
 		//Keypath:  keypath,
 		Hostnames: make([]string, 0),
+		LogLimit:  1024 * 1024 * 10, // 10 Mb
 	}
 }
 

app/server/server.go

@@ -431,6 +431,24 @@ func (srv *Server) Daemonize() error {
 		if err != nil {
 			return err
 		}
+		// Log file rotator
+		logFunc := func() {
+			for {
+				stat, err := os.Stat(srv.conf.Logpath)
+				if err == nil && stat.Size() > srv.conf.LogLimit {
+					os.Rename(srv.conf.Logpath+".2", srv.conf.Logpath+".3")
+					os.Rename(srv.conf.Logpath+".1", srv.conf.Logpath+".2")
+					os.Rename(srv.conf.Logpath, srv.conf.Logpath+".1")
+					logFile.Close()
+					logFile, err = os.OpenFile(srv.conf.Logpath, os.O_WRONLY|os.O_CREATE|os.O_APPEND, 0640)
+					syscall.Dup2(int(logFile.Fd()), int(os.Stdout.Fd()))
+					syscall.Dup2(int(logFile.Fd()), int(os.Stderr.Fd()))
+					time.Sleep(10 * time.Second)
+				}
+
+			}
+		}
+		go logFunc()
 		// Write process ID
 		rundir := filepath.Dir(srv.conf.Runpath)
 		err = os.MkdirAll(rundir, 0750)