fix: 多个 destination 时的 zk 竞争问题 (#68)

.gitignore

@@ -0,0 +1,22 @@
+# Created by .ignore support plugin (hsz.mobi)
+### Go template
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Dependency directories (remove the comment below to include it)
+# vendor/
+
+.vscode
+.idea
+
+vendor

.travis.yml

@@ -1,7 +1,6 @@
 language: go
 
 go:
-  - "1.10.x"
-  - "1.11.x"
+  - "1.14.x"
 
-go_import_path: github.com/CanalClient/canal-go
+go_import_path: github.com/withlin/canal-go

README.md

@@ -1,176 +1,5 @@
 
-# canal-go                                              |[中文](https://github.com/CanalSharp/canal-go/blob/master/README.zh-cn.md)
+# canal-go
 
-[![Build Status](https://travis-ci.org/CanalClient/canal-go.svg?branch=master)](https://travis-ci.org/CanalSharp/canal-go)
-
-## Ⅰ.What is canal-go
-
-canal-go is a golang Client of alibaba's open source component `Canal`,and it provides golang developer a much easier way to use Canal.
-
- `Cancal` is a incremental Publish&Subscription component based on mysql's `binlog`.To learn more a bout Cancal,please visit ` https://github.com/alibaba/canal/wiki`
-
- log based incremental pub&sub model  can be applied to  many business cases:
-
-1) Database Mirroring
-2) Realtime Database backup
-3) Multi-level index
-4) search build
-5) Busienss cache refresh
-6) Notification on price change(in e-commerce site) and so on
-
-## Ⅱ.Using scenarios
-
-`canal-go` as a golang client of canal,it can be used in situations where Canal is being used.We have listed some using scenarios above,here are some more detailed use cases:
-
-1) As a substitution of polling Database to monitor Database changes,it is much more effective than polling.
-
-2) Realtime Update data in search engine when data in mysql database changed.For example,in a E-commerce site,when Product information changed,it can be updated to Elasticsearch、solr,etc in a realtime way.
-
-3) Realtime update data in cache,Also take E-commerce site as an example,when price,inventory and other product information changed,it can be updated to Redis in a realtime way.
-
-4) Database Backup,synchronization.
-
-5) To trigger some other business logics on data change,for example,when a customer place an order without payment in a certain period of time and so the order is cancelled automatically,we get the changed status of the order and then we can push a notification to the customer(or take some other actions)
-
-6) Push changed data to RabbitMq,kafak or other message queues for consuming.
-
-## Ⅲ.Working  mechanism
-
-As a golang client of Canal,it use `Socket` for communication,the transfer Protocol is `TCP`,and the data exchange Protocol is Google's Protocol Buffer 3.0
-
-## Ⅳ.Workflow
-
-1) Canal connect to Mysql database ,pretented to be a slave of mysql
-
-2) canal-go(as mentioned it is a client of Cancal) connect to Canal
-
-3) When data in the database changed,it write the changes to binlog
-
-4) Canal send dump request to mysql database,get binlog and then parse it.
-
-5) canal-go send request to Canal for data.
-
-6) Canal send parsed data to canal-go
-
-7) canal-go get data successfully and then send an acknowledgement to Canal(optional)
-
-8) Canal record the consumption position
-
-The following picture shows how it works:
-
-
-![1537860226808](assets/668104-20180925182816462-2110152563.png)
-
-## Ⅴ.Quick Start
-
-### 1. Install Canal
-
-To Install and configure Canal,please visit `https://github.com/alibaba/canal/wiki/QuickStart` for information
-
-### 2.Create a golang Console Project
-
-### 3. Install go get  from github source
-
-````shell
-go get  github.com/CanalSharp/canal-go
-````
-
-or you can install it from nuget manager(a graphic ui)  in visual studio
-
-### 4. Connect to Canal
-
-
-````golang
-
-connector := client.NewSimpleCanalConnector("192.168.199.17", 11111, "", "", "example", 60000, 60*60*1000)
-	err :=connector.Connect()
-	if err != nil {
-		log.Println(err)
-		os.Exit(1)
-	}
-	err = connector.Subscribe(".*\\\\..*")
-	if err != nil {
-		log.Println(err)
-		os.Exit(1)
-	}
-
-	for {
-
-		message,err := connector.Get(100, nil, nil)
-		if err != nil {
-			log.Println(err)
-			os.Exit(1)
-		}
-		batchId := message.Id
-		if batchId == -1 || len(message.Entries) <= 0 {
-			time.Sleep(300 * time.Millisecond)
-			fmt.Println("===没有数据了===")
-			continue
-		}
-
-		printEntry(message.Entries)
-
-	}
-
-````
-
-for more detailed information please visit [Sample](https://github.com/CanalSharp/canal-go/tree/master/samples)
-
-## Ⅵ Run canal-go via Docker quickly
-
-### 1. Run mysql and canal by command
-
-````shell
-git clone https://github.com/CanalClient/canal-go.git
-cd canal-go
-cd docker
-docker-compose up -d
-````
-
-### 2. Use navicat or orther  client to connect to mysql
-
-ip：the ip address of the server where docker running
-
-mysql username：root
-
-mysql password：000000
-
-mysql port：4406
-
-There is a default database named `test`,which contains a table named `test`
-
-![1537866852816](assets/668104-20180925182815646-1209020640.png)
-
-### 3.run the sample project
-
-### 4.Test it
-
-Execute the following sql:
-
-````sql
-insert into test values(1000,'111');
-update test set name='222' where id=1000;
-delete from test where id=1000;
-````
-
-![](assets/ys.gif)
-
-we can see that after executing `insrt,update,delete` sql,Our canal-go get the changed data.
-
-
-
-## Ⅶ What we will do next
-
-canal-go clustering support
-
-## Ⅷ Contribute
-
-We gladly accept community contributions.
-
-1.fork the canal-go Project
-
-2.make changes to it
-
-3.make a pull request
-
-Please do not hesitate to make a pull request,your effort will not in vain.
+[![Build Status](https://travis-ci.org/withlin/canal-go.svg?branch=master)](https://travis-ci.org/withlin/canal-go)
+[![Go Report Card](https://goreportcard.com/badge/github.com/withlin/canal-go)](https://goreportcard.com/badge/github.com/withlin/canal-go)