Added -logfile option.

[src/xds/xds-server.git] / main.go

diff --git a/main.go b/main.go
index fd1480e..060a927 100644 (file)
--- a/main.go
+++ b/main.go
@@ -7,6 +7,7 @@ import (
        "os"
        "os/exec"
        "os/signal"
+       "path/filepath"
        "strings"
        "syscall"
        "time"
@@ -115,8 +116,25 @@ func xdsApp(cliCtx *cli.Context) error {
        }
        ctx.Config = cfg
 
-       // TODO allow to redirect stdout/sterr into logs file
-       //logFilename := filepath.Join(ctx.Config.FileConf.LogsDir + "xds-server.log")
+       // Logs redirected into a file when logsDir is set
+       logfilename := cliCtx.GlobalString("logfile")
+       if ctx.Config.FileConf.LogsDir != "" && logfilename != "stdout" {
+               if logfilename == "" {
+                       logfilename = "xds-server.log"
+               }
+               // is it an absolute path ?
+               logFile := logfilename
+               if logfilename[0] == '.' || logfilename[0] != '/' {
+                       logFile = filepath.Join(ctx.Config.FileConf.LogsDir, logfilename)
+               }
+               fmt.Printf("Logging file: %s\n", logFile)
+               fdL, err := os.OpenFile(logFile, os.O_CREATE|os.O_TRUNC|os.O_WRONLY, 0666)
+               if err != nil {
+                       msgErr := fmt.Sprintf("Cannot create log file %s", logFile)
+                       return cli.NewExitError(msgErr, int(syscall.EPERM))
+               }
+               ctx.Log.Out = fdL
+       }
 
        // FIXME - add a builder interface and support other builder type (eg. native)
        builderType := "syncthing"
@@ -247,6 +265,12 @@ func main() {
                        Usage:  "logging level (supported levels: panic, fatal, error, warn, info, debug)\n\t",
                        EnvVar: "LOG_LEVEL",
                },
+               cli.StringFlag{
+                       Name:   "logfile",
+                       Value:  "stdout",
+                       Usage:  "filename where logs will be redirected (default stdout)\n\t",
+                       EnvVar: "LOG_FILENAME",
+               },
        }
 
        // only one action: Web Server