PLT-6080 moving clustering to memberlist (#6499)

* PLT-6080 adding cluster discovery service

* Adding memberlist lib

* Adding memberlist lib

* WIP

* WIP

* WIP

* WIP

* Rolling back config changes

* Fixing make file

* Fixing config for cluster

* WIP

* Fixing system console for clustering

* Fixing default config

* Fixing config

* Fixing system console for clustering

* Tweaking hub setting

* Bumping up time

* merging vendor dir

* Updating vendor dir

* Fixing unit test

* Fixing bad merge

* Remove some testing code

* Moving comment

* PLT-6868 adding db ping retry

* Removing unused loc strings

* Adding defer to cancel

2 files changed, 84 insertions, 0 deletions

diff --git a/utils/config_test.go b/utils/config_test.go
index bce85d2ae..3032766ec 100644
--- a/utils/config_test.go
+++ b/utils/config_test.go
@@ -6,6 +6,7 @@ package utils
 import (
 	"os"
 	"testing"
+	"time"
 
 	"github.com/mattermost/platform/model"
 )
@@ -59,7 +60,25 @@ func TestConfigFromEnviroVars(t *testing.T) {
 	if Cfg.TeamSettings.SiteName != "Mattermost" {
 		t.Fatal("should have been reset")
 	}
+}
+
+func TestRedirectStdLog(t *testing.T) {
+	TranslationsPreInit()
+	LoadConfig("config.json")
+	InitTranslations(Cfg.LocalizationSettings)
+
+	log := NewRedirectStdLog("test", false)
+
+	log.Println("[DEBUG] this is a message")
+	log.Println("[DEBG] this is a message")
+	log.Println("[WARN] this is a message")
+	log.Println("[ERROR] this is a message")
+	log.Println("[EROR] this is a message")
+	log.Println("[ERR] this is a message")
+	log.Println("[INFO] this is a message")
+	log.Println("this is a message")
 
+	time.Sleep(time.Second * 1)
 }
 
 func TestAddRemoveConfigListener(t *testing.T) {
diff --git a/utils/redirect_std_log.go b/utils/redirect_std_log.go
new file mode 100644
index 000000000..4fbfcf8ec
--- /dev/null
+++ b/utils/redirect_std_log.go
@@ -0,0 +1,65 @@
+// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package utils
+
+import (
+	"bufio"
+	"log"
+	"os"
+	"strings"
+
+	l4g "github.com/alecthomas/log4go"
+)
+
+type RedirectStdLog struct {
+	reader      *os.File
+	writer      *os.File
+	system      string
+	ignoreDebug bool
+}
+
+func NewRedirectStdLog(system string, ignoreDebug bool) *log.Logger {
+	r, w, _ := os.Pipe()
+	logger := &RedirectStdLog{
+		reader:      r,
+		writer:      w,
+		system:      system,
+		ignoreDebug: ignoreDebug,
+	}
+
+	go func(l *RedirectStdLog) {
+		scanner := bufio.NewScanner(l.reader)
+		for scanner.Scan() {
+			line := scanner.Text()
+
+			if strings.Index(line, "[DEBUG]") == 0 {
+				if !ignoreDebug {
+					l4g.Debug("%v%v", system, line[7:])
+				}
+			} else if strings.Index(line, "[DEBG]") == 0 {
+				if !ignoreDebug {
+					l4g.Debug("%v%v", system, line[6:])
+				}
+			} else if strings.Index(line, "[WARN]") == 0 {
+				l4g.Info("%v%v", system, line[6:])
+			} else if strings.Index(line, "[ERROR]") == 0 {
+				l4g.Error("%v%v", system, line[7:])
+			} else if strings.Index(line, "[EROR]") == 0 {
+				l4g.Error("%v%v", system, line[6:])
+			} else if strings.Index(line, "[ERR]") == 0 {
+				l4g.Error("%v%v", system, line[5:])
+			} else if strings.Index(line, "[INFO]") == 0 {
+				l4g.Info("%v%v", system, line[6:])
+			} else {
+				l4g.Info("%v %v", system, line)
+			}
+		}
+	}(logger)
+
+	return log.New(logger.writer, "", 0)
+}
+
+func (l *RedirectStdLog) Write(p []byte) (n int, err error) {
+	return l.writer.Write(p)
+}