fix container logger #176

backend/logger/logger.go

@@ -8,16 +8,14 @@ import (
 	"github.com/op/go-logging"
 )
 
-var logger *logging.Logger
-var logBuffer []struct {
-	time  string
-	level logging.Level
-	log   string
-}
-
-func init() {
-	InitLogger(logging.INFO)
-}
+var (
+	logger    *logging.Logger
+	logBuffer []struct {
+		time  string
+		level logging.Level
+		log   string
+	}
+)
 
 func InitLogger(level logging.Level) {
 	newLogger := logging.MustGetLogger("s-ui")
@@ -28,10 +26,10 @@ func InitLogger(level logging.Level) {
 
 	backend, err = logging.NewSyslogBackend("")
 	if err != nil {
-		println(err)
+		println("Unable to use syslog: " + err.Error())
 		backend = logging.NewLogBackend(os.Stderr, "", 0)
 	}
-	if ppid > 0 && err != nil {
+	if ppid > 1 && err != nil {
 		format = logging.MustStringFormatter(`%{time:2006/01/02 15:04:05} %{level} - %{message}`)
 	} else {
 		format = logging.MustStringFormatter(`%{level} - %{message}`)

backend/service/server.go

@@ -141,21 +141,27 @@ func (s *ServerService) GetSystemInfo() map[string]interface{} {
 
 func (s *ServerService) GetLogs(service string, count string, level string) []string {
 	c, _ := strconv.Atoi(count)
-	var lines []string
-	if service == "sing-box" {
-		cmdArgs := []string{"journalctl", "-u", service, "--no-pager", "-n", count, "-p", level}
-		// Run the command
-		cmd := exec.Command(cmdArgs[0], cmdArgs[1:]...)
-		var out bytes.Buffer
-		cmd.Stdout = &out
-		err := cmd.Run()
-		if err != nil {
-			return []string{"Failed to run journalctl command!"}
-		}
-		lines = strings.Split(out.String(), "\n")
-	} else {
-		lines = logger.GetLogs(c, level)
+
+	if service == "s-ui" {
+		return logger.GetLogs(c, level)
 	}
+	ppid := os.Getppid()
+	var lines []string
+	var cmdArgs []string
+	if ppid > 1 {
+		cmdArgs = []string{"journalctl", "-u", service, "--no-pager", "-n", count, "-p", level}
+	} else {
+		cmdArgs = []string{"tail", "/logs/" + service + ".log", "-n", count}
+	}
+	// Run the command
+	cmd := exec.Command(cmdArgs[0], cmdArgs[1:]...)
+	var out bytes.Buffer
+	cmd.Stdout = &out
+	err := cmd.Run()
+	if err != nil {
+		return []string{"Failed to get logs!", err.Error()}
+	}
+	lines = strings.Split(out.String(), "\n")
 
 	return lines
 }