Added support for LumberJack logging and —log argument like caddy

- I don’t think the way I am doing logging is correct, however it was the only way I could figure to get the package level customizations and flags I wanted while leveraging lumberjack.
- altered tunnel end point interface to AJ’s specification in issue #18
- added an InitLogging function package level, that is called by main to init.

html/admin/js/app.js

@@ -74,7 +74,7 @@ app.controller('statusController', function ($scope, $http) {
     console.log("statusController");
     $scope.status_search = "";
 
-    var api = '/api/com.daplie.rvpn/status'
+    var api = '/api/com.daplie.tunnel/status'
    
     $scope.updateView = function() {
         $http.get(api).then(function(response) {
@@ -96,7 +96,7 @@ app.controller('serverController', function ($scope, $http) {
     $scope.servers_trigger_details = [];
     $scope.filtered
 
-    var api = '/api/com.daplie.rvpn/servers'
+    var api = '/api/com.daplie.tunnel/servers'
    
     $scope.updateView = function() {
         $http.get(api).then(function(response) {

main.go

@@ -5,19 +5,24 @@ import (
 	"crypto/tls"
 	"flag"
 	"fmt"
+	"io/ioutil"
 	"log"
 	"os"
 	"time"
 
 	"github.com/spf13/viper"
 
+	"io"
+
 	"git.daplie.com/Daplie/go-rvpn-server/rvpn/genericlistener"
+	lumberjack "gopkg.in/natefinch/lumberjack.v2"
 )
 
 var (
 	loginfo                  *log.Logger
 	logdebug                 *log.Logger
 	logFlags                 = log.Ldate | log.Lmicroseconds | log.Lshortfile
+	logfile                  = "stdout"
 	argWssClientListener     string
 	argGenericBinding        int
 	argServerBinding         string
@@ -35,11 +40,37 @@ var (
 	serverName               string
 )
 
+func init() {
+	flag.StringVar(&logfile, "log", logfile, "Log file (or stdout/stderr; empty for none)")
+}
+
+var logoutput io.Writer
+
 //Main -- main entry point
 func main() {
 	flag.Parse()
-	loginfo = log.New(os.Stdout, "INFO: main: ", logFlags)
-	logdebug = log.New(os.Stdout, "DEBUG: main:", logFlags)
+	switch logfile {
+	case "stdout":
+		logoutput = os.Stdout
+	case "stderr":
+		logoutput = os.Stderr
+	case "":
+		logoutput = ioutil.Discard
+	default:
+		logoutput = &lumberjack.Logger{
+			Filename:   logfile,
+			MaxSize:    100,
+			MaxAge:     120,
+			MaxBackups: 10,
+		}
+	}
+
+	// send the output io.Writing to the other packages
+	genericlistener.InitLogging(logoutput)
+
+	loginfo = log.New(logoutput, "INFO: main: ", logFlags)
+	logdebug = log.New(logoutput, "DEBUG: main:", logFlags)
+
 	viper.SetConfigName("go-rvpn-server")
 	viper.AddConfigPath("./")
 	err := viper.ReadInConfig()
@@ -61,11 +92,6 @@ func main() {
 
 	loginfo.Println("startup")
 
-	loginfo.Println(viper.Get("rvpn.genericlisteners"))
-	loginfo.Println(viper.Get("rvpn.domains"))
-
-	fmt.Println("-=-=-=-=-=-=-=-=-=-=")
-
 	certbundle, err := tls.LoadX509KeyPair("certs/fullchain.pem", "certs/privkey.pem")
 	if err != nil {
 		loginfo.Println(err)

rvpn/genericlistener/api_interface.go

@@ -13,7 +13,7 @@ import (
 )
 
 const (
-	endPointPrefix = "/api/com.daplie.rvpn/"
+	endPointPrefix = "/api/com.daplie.tunnel/"
 )
 
 var connectionTable *Table