Add -access-log flag to replace the option in config file

The commandline -access-log flag is useful to write the rc script for
this program.

Author: liweitianux

common/config.go

@@ -47,7 +47,6 @@ type MonitorConfig struct {
 type Config struct {
 	Debug		bool   `mapstructure:"debug"`
 	Listen		string `mapstructure:"listen"`
-	LogFile		string `mapstructure:"log_file"`
 	MirrorListFile	string `mapstructure:"mirror_list"`
 	Mirrors		map[string]*Mirror
 	MMDBType	string `mapstructure:"mmdb_type"`

main.go

@@ -54,8 +54,10 @@ import (
 
 func main() {
 	var cfgfile string
+	var accesslog string
 	var f_version bool
 	flag.StringVar(&cfgfile, "config", common.AppName+".toml", "config file")
+	flag.StringVar(&accesslog, "access-log", "", "web access log file")
 	flag.BoolVar(&f_version, "version", false, "show version")
 	flag.Parse()
 
@@ -75,15 +77,15 @@ func main() {
 		gin.SetMode(gin.DebugMode)
 	}
 
-	if cfg.LogFile != "" {
-		f, err := os.OpenFile(cfg.LogFile,
+	if accesslog != "" {
+		f, err := os.OpenFile(accesslog,
 				os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
 		if err != nil {
-			common.Fatalf("Failed to open logfile: %v\n", err)
+			common.Fatalf("Failed to open access log: %v\n", err)
 		}
 		gin.DisableConsoleColor()
 		gin.DefaultWriter = io.MultiWriter(f)
-		common.InfoPrintf("Write log to file: %s\n", cfg.LogFile)
+		common.InfoPrintf("Write access log to file: %s\n", accesslog)
 	}
 
 	router := gin.Default()

mirrorselect.dev.toml

@@ -7,9 +7,6 @@ debug = true
 
 listen = "127.0.0.1:3130"
 
-# Uncomment to write log to a file
-#log_file = "mirrorselect.log"
-
 # File containing the mirrors (path relative to this file)
 mirror_list = "mirrors.dev.toml"
 

mirrorselect.toml

@@ -7,9 +7,6 @@
 
 listen = "127.0.0.1:3130"
 
-# Uncomment to write log to a file
-#log_file = "mirrorselect.log"
-
 # File containing the mirrors (path relative to this file)
 mirror_list = "mirrors.toml"
 
@@ -44,7 +41,7 @@ tls_verify = true
 
 # Executable to invoke when a mirror is down/up
 # The command to run is: $notify_exec <mirror_name> <DOWN|UP>
-notify_exec = "echo"
+#notify_exec = "echo"
 
 # Timeout for executing the above command (unit: second)
 exec_timeout = 2