From 6f220f830ab10690098f9c53144d31fcab2be33d Mon Sep 17 00:00:00 2001
From: chenshijun <csj_sky@126.com>
Date: 星期三, 15 一月 2020 15:28:35 +0800
Subject: [PATCH] 添加snapShot功能,用于刚加入集群收到一大堆sql的处理

---
 agent.go  |    4 ++--
 config.go |   42 ++++++++++++++++++++++++++++++++++++++++--
 2 files changed, 42 insertions(+), 4 deletions(-)

diff --git a/agent.go b/agent.go
index 45f9ab7..b94b7a7 100644
--- a/agent.go
+++ b/agent.go
@@ -62,9 +62,9 @@
 }
 
 // Create create serf agent with config
-func Create(conf *Config) (*Agent, error) {
+func Create(conf *Config, snapshotPath string) (*Agent, error) {
 	// config cover to serf config
-	serfConf, err := conf.convertToSerf()
+	serfConf, err := conf.convertToSerf(snapshotPath)
 	if err != nil {
 		return nil, err
 	}
diff --git a/config.go b/config.go
index e0d02c8..4b34256 100644
--- a/config.go
+++ b/config.go
@@ -19,7 +19,9 @@
 import (
 	"fmt"
 	"net"
+	"os"
 	"strconv"
+	"strings"
 
 	//"github.com/apache/servicecomb-service-center/syncer/pkg/utils"
 	"github.com/hashicorp/memberlist"
@@ -44,7 +46,12 @@
 	BroadcastInterval  = 5
 	MaxQueryRespSize   = 50 * 1024 * 1024
 	MaxQuerySize       = 50 * 1024 * 1024
-	MaxUserEventSize   = 5 * 1024
+	MaxUserEventSize   = 9 * 1024
+	ReplayOnJoinDefault = false
+	SnapshotPathDefault = "./serfSnapShot"
+	MaxEventBufferCount = 2048
+
+	TcpTransportPort = 30194 //tcp浼犺緭澶ф暟鎹噺鎺ュ彛
 )
 
 // DefaultConfig default config
@@ -84,8 +91,30 @@
 	return nil
 }
 
+func isFileRightful(filePath string) bool {
+	if filePath != "" {
+		_, err := os.Stat(filePath)
+		if err != nil && os.IsNotExist(err) {
+			pos := strings.LastIndex(filePath, "/")
+			if pos != -1 {
+				filePath = filePath[0:pos]
+			}
+
+			_, err = os.Stat(filePath)
+			if err == nil || !os.IsNotExist(err) {
+				return true
+			} else {
+				return false
+			}
+		} else {
+			return false
+		}
+	}
+	return false
+}
+
 // convertToSerf convert Config to serf.Config
-func (c *Config) convertToSerf() (*serf.Config, error) {
+func (c *Config) convertToSerf(snapshotPath string) (*serf.Config, error) {
 	serfConf := serf.DefaultConfig()
 
 	bindIP, bindPort, err := SplitHostPort(c.BindAddr, DefaultBindPort)
@@ -119,9 +148,18 @@
 		c.RetryMaxAttempts = retryMaxAttempts
 	}
 
+	c.SnapshotPath = SnapshotPathDefault
+	if isFileRightful(snapshotPath) {
+		c.SnapshotPath = snapshotPath
+	}
+
+	c.ReplayOnJoin = ReplayOnJoinDefault
+
 	serfConf.QueryResponseSizeLimit = c.QueryResponseSizeLimit
 	serfConf.QuerySizeLimit = c.QuerySizeLimit
 	serfConf.UserEventSizeLimit = c.UserEventSizeLimit
+	serfConf.SnapshotPath = c.SnapshotPath
+	serfConf.EventBuffer = MaxEventBufferCount
 
 	return serfConf, nil
 }

--
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