From 804836b7cbfefdc622ca23dee7851d5248ab93a6 Mon Sep 17 00:00:00 2001
From: dingjun <fangdingjun@gmail.com>
Date: Mon, 15 Apr 2019 12:10:51 +0800
Subject: [PATCH] change log library

---
 conf_test.go |  7 ++++---
 main.go      | 31 +++++++++++++++++++++++--------
 2 files changed, 27 insertions(+), 11 deletions(-)

diff --git a/conf_test.go b/conf_test.go
index 70cf334..7cf5547 100644
--- a/conf_test.go
+++ b/conf_test.go
@@ -2,9 +2,10 @@ package main
 
 import (
 	"fmt"
-	"github.com/go-yaml/yaml"
 	"io/ioutil"
 	"testing"
+
+	yaml "gopkg.in/yaml.v2"
 )
 
 func TestConf(t *testing.T) {
@@ -18,8 +19,8 @@ func TestConf(t *testing.T) {
 	}
 	fmt.Printf("%+v\n", c)
 	var testdata = map[string]string{
-		"www.example.com": "127.0.0.1:8443",
-		"b.example.com":   "127.0.0.1:8541",
+		"www.example.com": "127.0.0.1:8443 proxy-v2",
+		"b.example.com":   "127.0.0.1:8542",
 	}
 	r := forwardRules(c.ForwardRules)
 	for k, v := range testdata {
diff --git a/main.go b/main.go
index 5f188db..7722469 100644
--- a/main.go
+++ b/main.go
@@ -1,19 +1,16 @@
 package main
 
 import (
+	"flag"
 	"fmt"
 	"io"
 	"io/ioutil"
+	"net"
 	"strings"
 
-	"github.com/go-yaml/yaml"
-	"github.com/golang/glog"
+	glog "github.com/fangdingjun/go-log"
 	proxyproto "github.com/pires/go-proxyproto"
-
-	//"crypto/tls"
-	"flag"
-	//"log"
-	"net"
+	yaml "gopkg.in/yaml.v2"
 )
 
 func getSNIServerName(buf []byte) string {
@@ -99,6 +96,7 @@ func forward(c net.Conn, data []byte, dst string) {
 	defer c1.Close()
 
 	if proxyProto != 0 {
+		glog.Debugf("send proxy proto v%d to %s", proxyProto, addr)
 		hdr.WriteTo(c1)
 	}
 
@@ -143,12 +141,14 @@ func serve(c net.Conn) {
 	}
 	servername := getSNIServerName(buf[:n])
 	if servername == "" {
+		glog.Debugf("no sni, send to default")
 		forward(c, buf[:n], getDefaultDST())
 		return
 	}
 	dst := getDST(c, servername)
 	if dst == "" {
 		dst = getDefaultDST()
+		glog.Debugf("use default dst %s for sni %s", dst, servername)
 	}
 	forward(c, buf[:n], dst)
 }
@@ -157,8 +157,11 @@ var cfg conf
 
 func main() {
 	var cfgfile string
+	var logfile string
+	var loglevel string
 	flag.StringVar(&cfgfile, "c", "config.yaml", "config file")
-	flag.Set("logtostderr", "true")
+	flag.StringVar(&logfile, "log_file", "", "log file")
+	flag.StringVar(&loglevel, "log_level", "INFO", "log level")
 	flag.Parse()
 
 	data, err := ioutil.ReadFile(cfgfile)
@@ -169,6 +172,18 @@ func main() {
 		glog.Fatal(err)
 	}
 
+	if logfile != "" {
+		glog.Default.Out = &glog.FixedSizeFileWriter{
+			MaxCount: 4,
+			Name:     logfile,
+			MaxSize:  10 * 1024 * 1024,
+		}
+	}
+
+	if lv, err := glog.ParseLevel(loglevel); err == nil {
+		glog.Default.Level = lv
+	}
+
 	for _, d := range cfg.Listen {
 		glog.Infof("listen on :%d", d)
 		l, err := net.Listen("tcp", fmt.Sprintf(":%d", d))