环境如下:

canal: 1.15-alpha-1

mysql  5.6.49

rabbitmq 3.7.14

Erlang 21.3

canal 安装和启动 见上篇文章 canal快速安装启动

但是这个拿到的数据,不知道怎么处理 看看如果丢到mq,我从mq取到的数据格式

{
"data":[
{
"id":"23",
"name":"sdfs",
"age":"10",
"sex":"1",
"created_at":"2010-09-09 11:11:11",
"updated_at":"2020-08-14 23:57:34"
}
],
"database":"test",
"es":1597420654000,
"id":1,
"isDdl":false,
"mysqlType":{
"id":"int(11)",
"name":"varchar(255)",
"age":"int(11)",
"sex":"int(255)",
"created_at":"timestamp",
"updated_at":"timestamp"
},
"old":[
{
"name":"er",
"updated_at":"2020-07-25 09:27:35"
}
],
"pkNames":[
"id"
],
"sql":"",
"sqlType":{
"id":4,
"name":12,
"age":4,
"sex":4,
"created_at":93,
"updated_at":93
},
"table":"user",
"ts":1597422036430,
"type":"UPDATE"
}

这个就很好用了,直接拿data字段进行更新就行了

type 会有  UPDATE  DELETE INSERT

canal 官方文档 说是队列只支持 kafka 和 rocketmq

但是现在的版本已经支持 rabbitmq了

vim conf/canal.properties

canal.mq.servers = 192.168.33.60
canal.mq.vhost=/
canal.mq.exchange=exchange_user_sync
canal.mq.username=admin
canal.mq.password=admin

canal.serverMode = rabbitmq

vim conf/example/instance.properties

canal.instance.master.address=192.168.33.60:3306 改为我的数据库ip

username/password 默认就是这样的,按照官方的例子授权 都可以不用改了,如果自己授权其他用户改动

canal.instance.dbUsername=canal
canal.instance.dbPassword=canal
canal.instance.connectionCharset = UTF-8

enable druid Decrypt database password

canal.instance.enableDruid=false

canal.mq.topic=example mq路由 到时候 交换机和队列绑定要设置route为 example