working commit

app/server/server.go

@@ -6,8 +6,8 @@ import (
 	"os/signal"
 	"os/user"
 	//"os/user"
-	//"path/filepath"
-	//"strconv"
+	"path/filepath"
+	"strconv"
 	//"sync"
 	"syscall"
 	//"time"
@@ -45,11 +45,19 @@ func (srv *Server) Handler() *handler.Handler {
 func (srv *Server) Configure() error {
 	var err error
 	srv.logg.Infof("Server configure")
-	srv.conf, err = config.NewConfig()
+	srv.conf = config.NewConfig()
+	if err != nil {
+		return err
+	}
+	err = srv.conf.ReadConfigfile()
+	if err != nil {
+		//srv.logg.Warningf("Error loading config file: %v", err)
+		//return err
+	}
+	err = srv.conf.ReadOptions()
 	if err != nil {
 		return err
 	}
-
 	return err
 }
 
@@ -57,21 +65,39 @@ func (srv *Server) Build() error {
 	var err error
 	srv.logg.Infof("Server build")
 
+	confDump := srv.conf.String()
+	srv.logg.Infof("Current server configuration is:\n%s\n", confDump)
+
+	if srv.conf.AsDaemon {
+		logdir := filepath.Dir(srv.conf.Logpath)
+		srv.logg.Infof("Create log directory %s", logdir)
+		err = os.MkdirAll(logdir, 0750)
+		if err != nil {
+			return err
+		}
+		rundir := filepath.Dir(srv.conf.Runpath)
+		srv.logg.Infof("Create run directory %s", rundir)
+		err = os.MkdirAll(rundir, 0750)
+		if err != nil {
+			return err
+		}
+	}
+
 	// Database create
-	srv.logg.Infof("Create database directory")
 	dbdir := srv.conf.Database.Basepath
+	srv.logg.Infof("Create database directory %s ", dbdir)
 	err = os.MkdirAll(dbdir, 0750)
 	if err != nil {
 		return err
 	}
 
 	mdb := maindb.NewDatabase(dbdir)
-	srv.logg.Infof("Open database")
+	srv.logg.Infof("Open main database")
 	err = mdb.OpenDatabase()
 	if err != nil {
 		return err
 	}
-	srv.logg.Infof("Initialize database")
+	srv.logg.Infof("Initialize main database")
 	err = mdb.InitDatabase()
 	if err != nil {
 		return err
@@ -162,3 +188,98 @@ func (srv *Server) Run() error {
 	}
 	return err
 }
+
+func (srv *Server) PseudoFork() error {
+	const successExit int = 0
+	var keyEnv string = "IMX0LTSELMRF8K"
+	var err error
+
+	_, isChild := os.LookupEnv(keyEnv)
+	switch {
+	case !isChild:
+		os.Setenv(keyEnv, "TRUE")
+
+		procAttr := syscall.ProcAttr{}
+		cwd, err := os.Getwd()
+		if err != nil {
+			return err
+		}
+		var sysFiles = make([]uintptr, 3)
+		sysFiles[0] = uintptr(syscall.Stdin)
+		sysFiles[1] = uintptr(syscall.Stdout)
+		sysFiles[2] = uintptr(syscall.Stderr)
+
+		procAttr.Files = sysFiles
+		procAttr.Env = os.Environ()
+		procAttr.Dir = cwd
+
+		_, err = syscall.ForkExec(os.Args[0], os.Args, &procAttr)
+		if err != nil {
+			return err
+		}
+		os.Exit(successExit)
+	case isChild:
+		_, err = syscall.Setsid()
+		if err != nil {
+			return err
+		}
+	}
+	os.Unsetenv(keyEnv)
+	return err
+}
+
+func (srv *Server) Daemonize() error {
+	var err error
+	if srv.conf.AsDaemon {
+		// Restart process process
+		err = srv.PseudoFork()
+		if err != nil {
+			return err
+		}
+
+		// Redirect stdin
+		nullFile, err := os.OpenFile("/dev/null", os.O_RDWR, 0)
+		if err != nil {
+			return err
+		}
+		err = syscall.Dup2(int(nullFile.Fd()), int(os.Stdin.Fd()))
+		if err != nil {
+			return err
+		}
+		// Redirect stderr and stout
+		logdir := filepath.Dir(srv.conf.Logpath)
+		err = os.MkdirAll(logdir, 0750)
+		if err != nil {
+			return err
+		}
+		logFile, err := os.OpenFile(srv.conf.Logpath, os.O_WRONLY|os.O_CREATE|os.O_APPEND, 0640)
+		if err != nil {
+			return err
+		}
+		err = syscall.Dup2(int(logFile.Fd()), int(os.Stdout.Fd()))
+		if err != nil {
+			return err
+		}
+		err = syscall.Dup2(int(logFile.Fd()), int(os.Stderr.Fd()))
+		if err != nil {
+			return err
+		}
+		// Write process ID
+		rundir := filepath.Dir(srv.conf.Runpath)
+		err = os.MkdirAll(rundir, 0750)
+		if err != nil {
+			return err
+		}
+		pidFile, err := os.OpenFile(srv.conf.Runpath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0640)
+		if err != nil {
+			return err
+		}
+		defer pidFile.Close()
+		currPid := os.Getpid()
+		_, err = pidFile.WriteString(strconv.Itoa(currPid))
+		if err != nil {
+			return err
+		}
+	}
+	return err
+}