Canal入门

1 Canal环境准备

1.1 docker安装数据库

配置文件

[root@other example]# cat /mydata/mysql/master/conf/my.cnf
[client]
default-character-set=utf8

[mysql]
default-character-set=utf8


[mysqld]
init_connect='set collation_connection=utf8_unicode_ci'
init_connect='SET NAMES utf8'
character-set-server=utf8
collation-server=utf8_unicode_ci
skip-character-set-client-handshake
skip-name-resolve

server_id=1
log-bin=mysql-bin
binlog_format=ROW
[root@other example]#

1.2 Mysql配置

canal 的原理是基于 mysql binlog 技术，所以这里一定需要开启 mysql 的 binlog 写入功能，建议配置 binlog 模式为 row。

查看方式：

SHOW VARIABLES LIKE 'binlog_format' ;

修改以下配置项：

[mysqld]
log-bin=mysql-bin  #添加这一行就 ok
binlog_format=ROW   #选择 row 模式
server_id=1      #配置mysql replaction需要定义，不能与canal的slaveId重复

知识小贴士 :

1. Row

日志中会记录成每一行数据被修改的形式，然后在 slave 端再对相同的数据进行修改。

优点：在 row 模式下，bin-log 中可以不记录执行的 SQL 语句的上下文相关的信息，仅仅只需要记录那一条记录被修改了，修改成什么样了。所以 row 的日志内容会非常清楚的记录下每一行数据修改的细节，非常容易理解。而且不会出现某些特定情况下的存储过程或 function ，以及 trigger 的调用和触发无法被正确复制的问题。

2. Statement

每一条会修改数据的 SQL 都会记录到 master 的 bin-log 中。slave 在复制的时候 SQL 进程会解析成和原来 master 端执行过的相同的 SQL 再次执行。

优点：在 statement 模式下，首先就是解决了 row 模式的缺点，不需要记录每一行数据的变化，减少了 bin-log 日志量，节省 I/O 以及存储资源，提高性能。因为他只需要记录在 master 上所执行的语句的细节，以及执行语句时候的上下文的信息。

缺点：在 statement 模式下，由于他是记录的执行语句，所以，为了让这些语句在 slave 端也能正确执行，那么他还必须记录每条语句在执行的时候的一些相关信息，也就是上下文信息，以保证所有语句在 slave 端杯执行的时候能够得到和在 master 端执行时候相同的结果。另外就是，由于 MySQL 现在发展比较快，很多的新功能不断的加入，使 MySQL 的复制遇到了不小的挑战，自然复制的时候涉及到越复杂的内容，bug 也就越容易出现。在 statement 中，目前已经发现的就有不少情况会造成 MySQL 的复制出现问题，主要是修改数据的时候使用了某些特定的函数或者功能的时候会出现，比如：sleep() 函数在有些版本中就不能被正确复制，在存储过程中使用了 last_insert_id() 函数，可能会使 slave 和 master 上得到不一致的 id 等等。由于 row 是基于每一行来记录的变化，所以不会出现类似的问题。

1.3 Mysql创建用户授权

canal 的原理是模拟自己为 mysql slave ，所以这里一定需要做为 mysql slave 的相关权限。 创建一个主从同步的账户，并且赋予权限：

CREATE USER canal@'localhost' IDENTIFIED BY 'canal';
GRANT SELECT, REPLICATION SLAVE, REPLICATION CLIENT ON . TO 'canal'@'localhost'; 
FLUSH PRIVILEGES; 

2 Canal部署安装

2.1 上传解压

解压后的目录如下：

目录介绍：

bin : 存储的是可执行脚本

conf ：存放canal的配置文件

lib ：存放canal的lib目录

logs ：存放的是日志文件

2.2 配置

编辑canal/conf/example/instance.properties :

[root@other canal]# cat conf/example/instance.properties
#################################################
## mysql serverId , v1.0.26+ will autoGen
# canal.instance.mysql.slaveId=0

# enable gtid use true/false
canal.instance.gtidon=false

# position info
canal.instance.master.address=127.0.0.1:3306
canal.instance.master.journal.name=
canal.instance.master.position=
canal.instance.master.timestamp=
canal.instance.master.gtid=

# rds oss binlog
canal.instance.rds.accesskey=
canal.instance.rds.secretkey=
canal.instance.rds.instanceId=

# table meta tsdb info
canal.instance.tsdb.enable=true
#canal.instance.tsdb.url=jdbc:mysql://127.0.0.1:3306/canal_tsdb
#canal.instance.tsdb.dbUsername=canal
#canal.instance.tsdb.dbPassword=canal

#canal.instance.standby.address =
#canal.instance.standby.journal.name =
#canal.instance.standby.position =
#canal.instance.standby.timestamp =
#canal.instance.standby.gtid=

# username/password
canal.instance.dbUsername=canal
canal.instance.dbPassword=canal
canal.instance.connectionCharset = UTF-8
# enable druid Decrypt database password
canal.instance.enableDruid=false
#canal.instance.pwdPublicKey=MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBALK4BUxdDltRRE5/zXpVEVPUgunvscYFtEip3pmLlhrWpacX7y7GCMo2/JM6LeHmiiNdH1FWgGCpUfircSwlWKUCAwEAAQ==

# table regex
canal.instance.filter.regex=.*\..*
# table black regex
canal.instance.filter.black.regex=
# table field filter(format: schema1.tableName1:field1/field2,schema2.tableName2:field1/field2)
#canal.instance.filter.field=test1.t_product:id/subject/keywords,test2.t_company:id/name/contact/ch
# table field black filter(format: schema1.tableName1:field1/field2,schema2.tableName2:field1/field2)
#canal.instance.filter.black.field=test1.t_product:subject/product_image,test2.t_company:id/name/contact/ch

# mq config
canal.mq.topic=example
# dynamic topic route by schema or table regex
#canal.mq.dynamicTopic=mytest1.user,mytest2\..*,.*\..*
canal.mq.partition=0
# hash partition config
#canal.mq.partitionsNum=3
#canal.mq.partitionHash=test.table:id^name,.*\..*
#################################################
[root@other canal]#

启动的话执行startup.sh即可

3 数据拉取测试

拿到官网的测试代码

<dependency>
            <groupId>com.alibaba.otter</groupId>
            <artifactId>canal.client</artifactId>
            <version>1.1.4</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba.otter</groupId>
            <artifactId>canal.protocol</artifactId>
            <version>1.1.4</version>
        </dependency>
        <dependency>
            <groupId>commons-lang</groupId>
            <artifactId>commons-lang</artifactId>
            <version>2.6</version>
        </dependency>

测试类

package com.dalianpai.canal;

import java.io.UnsupportedEncodingException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;

import org.apache.commons.lang.StringUtils;
import org.apache.commons.lang.SystemUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.util.CollectionUtils;

import com.alibaba.otter.canal.client.CanalConnector;
import com.alibaba.otter.canal.protocol.CanalEntry;
import com.alibaba.otter.canal.protocol.CanalEntry.Column;
import com.alibaba.otter.canal.protocol.CanalEntry.Entry;
import com.alibaba.otter.canal.protocol.CanalEntry.EntryType;
import com.alibaba.otter.canal.protocol.CanalEntry.EventType;
import com.alibaba.otter.canal.protocol.CanalEntry.Pair;
import com.alibaba.otter.canal.protocol.CanalEntry.RowChange;
import com.alibaba.otter.canal.protocol.CanalEntry.RowData;
import com.alibaba.otter.canal.protocol.CanalEntry.TransactionBegin;
import com.alibaba.otter.canal.protocol.CanalEntry.TransactionEnd;
import com.alibaba.otter.canal.protocol.Message;
import com.google.protobuf.InvalidProtocolBufferException;

/**
 * @author WGR
 * @create 2020/9/4 -- 23:25
 */
public class BaseCanalClientTest {
    protected final static Logger logger             = LoggerFactory.getLogger(AbstractCanalClientTest.class);
    protected static final String             SEP                = SystemUtils.LINE_SEPARATOR;
    protected static final String             DATE_FORMAT        = "yyyy-MM-dd HH:mm:ss";
    protected volatile boolean                running            = false;
    protected Thread.UncaughtExceptionHandler handler            = new Thread.UncaughtExceptionHandler() {

        @Override
        public void uncaughtException(Thread t, Throwable e) {
            logger.error("parse events has an error", e);
        }
    };
    protected Thread                          thread             = null;
    protected CanalConnector connector;
    protected static String                   context_format     = null;
    protected static String                   row_format         = null;
    protected static String                   transaction_format = null;
    protected String                          destination;

    static {
        context_format = SEP + "****************************************************" + SEP;
        context_format += "* Batch Id: [{}] ,count : [{}] , memsize : [{}] , Time : {}" + SEP;
        context_format += "* Start : [{}] " + SEP;
        context_format += "* End : [{}] " + SEP;
        context_format += "****************************************************" + SEP;

        row_format = SEP
                + "----------------> binlog[{}:{}] , name[{},{}] , eventType : {} , executeTime : {}({}) , gtid : ({}) , delay : {} ms"
                + SEP;

        transaction_format = SEP
                + "================> binlog[{}:{}] , executeTime : {}({}) , gtid : ({}) , delay : {}ms"
                + SEP;

    }

    protected void printSummary(Message message, long batchId, int size) {
        long memsize = 0;
        for (Entry entry : message.getEntries()) {
            memsize += entry.getHeader().getEventLength();
        }

        String startPosition = null;
        String endPosition = null;
        if (!CollectionUtils.isEmpty(message.getEntries())) {
            startPosition = buildPositionForDump(message.getEntries().get(0));
            endPosition = buildPositionForDump(message.getEntries().get(message.getEntries().size() - 1));
        }

        SimpleDateFormat format = new SimpleDateFormat(DATE_FORMAT);
        logger.info(context_format, new Object[] { batchId, size, memsize, format.format(new Date()), startPosition,
                endPosition });
    }

    protected String buildPositionForDump(Entry entry) {
        long time = entry.getHeader().getExecuteTime();
        Date date = new Date(time);
        SimpleDateFormat format = new SimpleDateFormat(DATE_FORMAT);
        String position = entry.getHeader().getLogfileName() + ":" + entry.getHeader().getLogfileOffset() + ":"
                + entry.getHeader().getExecuteTime() + "(" + format.format(date) + ")";
        if (StringUtils.isNotEmpty(entry.getHeader().getGtid())) {
            position += " gtid(" + entry.getHeader().getGtid() + ")";
        }
        return position;
    }

    protected void printEntry(List<Entry> entrys) {
        for (Entry entry : entrys) {
            long executeTime = entry.getHeader().getExecuteTime();
            long delayTime = new Date().getTime() - executeTime;
            Date date = new Date(entry.getHeader().getExecuteTime());
            SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

            if (entry.getEntryType() == EntryType.TRANSACTIONBEGIN || entry.getEntryType() == EntryType.TRANSACTIONEND) {
                if (entry.getEntryType() == EntryType.TRANSACTIONBEGIN) {
                    TransactionBegin begin = null;
                    try {
                        begin = TransactionBegin.parseFrom(entry.getStoreValue());
                    } catch (InvalidProtocolBufferException e) {
                        throw new RuntimeException("parse event has an error , data:" + entry.toString(), e);
                    }
                    // 打印事务头信息，执行的线程id，事务耗时
                    logger.info(transaction_format,
                            new Object[] { entry.getHeader().getLogfileName(),
                                    String.valueOf(entry.getHeader().getLogfileOffset()),
                                    String.valueOf(entry.getHeader().getExecuteTime()), simpleDateFormat.format(date),
                                    entry.getHeader().getGtid(), String.valueOf(delayTime) });
                    logger.info(" BEGIN ----> Thread id: {}", begin.getThreadId());
                    printXAInfo(begin.getPropsList());
                } else if (entry.getEntryType() == EntryType.TRANSACTIONEND) {
                    TransactionEnd end = null;
                    try {
                        end = TransactionEnd.parseFrom(entry.getStoreValue());
                    } catch (InvalidProtocolBufferException e) {
                        throw new RuntimeException("parse event has an error , data:" + entry.toString(), e);
                    }
                    // 打印事务提交信息，事务id
                    logger.info("----------------
");
                    logger.info(" END ----> transaction id: {}", end.getTransactionId());
                    printXAInfo(end.getPropsList());
                    logger.info(transaction_format,
                            new Object[] { entry.getHeader().getLogfileName(),
                                    String.valueOf(entry.getHeader().getLogfileOffset()),
                                    String.valueOf(entry.getHeader().getExecuteTime()), simpleDateFormat.format(date),
                                    entry.getHeader().getGtid(), String.valueOf(delayTime) });
                }

                continue;
            }

            if (entry.getEntryType() == EntryType.ROWDATA) {
                RowChange rowChage = null;
                try {
                    rowChage = RowChange.parseFrom(entry.getStoreValue());
                } catch (Exception e) {
                    throw new RuntimeException("parse event has an error , data:" + entry.toString(), e);
                }

                EventType eventType = rowChage.getEventType();

                logger.info(row_format,
                        new Object[] { entry.getHeader().getLogfileName(),
                                String.valueOf(entry.getHeader().getLogfileOffset()), entry.getHeader().getSchemaName(),
                                entry.getHeader().getTableName(), eventType,
                                String.valueOf(entry.getHeader().getExecuteTime()), simpleDateFormat.format(date),
                                entry.getHeader().getGtid(), String.valueOf(delayTime) });

                if (eventType == EventType.QUERY || rowChage.getIsDdl()) {
                    logger.info(" sql ----> " + rowChage.getSql() + SEP);
                    continue;
                }

                printXAInfo(rowChage.getPropsList());
                for (RowData rowData : rowChage.getRowDatasList()) {
                    if (eventType == EventType.DELETE) {
                        printColumn(rowData.getBeforeColumnsList());
                    } else if (eventType == EventType.INSERT) {
                        printColumn(rowData.getAfterColumnsList());
                    } else {
                        printColumn(rowData.getAfterColumnsList());
                    }
                }
            }
        }
    }

    protected void printColumn(List<Column> columns) {
        for (Column column : columns) {
            StringBuilder builder = new StringBuilder();
            try {
                if (StringUtils.containsIgnoreCase(column.getMysqlType(), "BLOB")
                        || StringUtils.containsIgnoreCase(column.getMysqlType(), "BINARY")) {
                    // get value bytes
                    builder.append(column.getName() + " : "
                            + new String(column.getValue().getBytes("ISO-8859-1"), "UTF-8"));
                } else {
                    builder.append(column.getName() + " : " + column.getValue());
                }
            } catch (UnsupportedEncodingException e) {
            }
            builder.append("    type=" + column.getMysqlType());
            if (column.getUpdated()) {
                builder.append("    update=" + column.getUpdated());
            }
            builder.append(SEP);
            logger.info(builder.toString());
        }
    }

    protected void printXAInfo(List<Pair> pairs) {
        if (pairs == null) {
            return;
        }

        String xaType = null;
        String xaXid = null;
        for (Pair pair : pairs) {
            String key = pair.getKey();
            if (StringUtils.endsWithIgnoreCase(key, "XA_TYPE")) {
                xaType = pair.getValue();
            } else if (StringUtils.endsWithIgnoreCase(key, "XA_XID")) {
                xaXid = pair.getValue();
            }
        }

        if (xaType != null && xaXid != null) {
            logger.info(" ------> " + xaType + " " + xaXid);
        }
    }

    public void setConnector(CanalConnector connector) {
        this.connector = connector;
    }

    /**
     * 获取当前Entry的 GTID信息示例
     *
     * @param header
     * @return
     */
    public static String getCurrentGtid(CanalEntry.Header header) {
        List<CanalEntry.Pair> props = header.getPropsList();
        if (props != null && props.size() > 0) {
            for (CanalEntry.Pair pair : props) {
                if ("curtGtid".equals(pair.getKey())) {
                    return pair.getValue();
                }
            }
        }
        return "";
    }

    /**
     * 获取当前Entry的 GTID Sequence No信息示例
     *
     * @param header
     * @return
     */
    public static String getCurrentGtidSn(CanalEntry.Header header) {
        List<CanalEntry.Pair> props = header.getPropsList();
        if (props != null && props.size() > 0) {
            for (CanalEntry.Pair pair : props) {
                if ("curtGtidSn".equals(pair.getKey())) {
                    return pair.getValue();
                }
            }
        }
        return "";
    }

    /**
     * 获取当前Entry的 GTID Last Committed信息示例
     *
     * @param header
     * @return
     */
    public static String getCurrentGtidLct(CanalEntry.Header header) {
        List<CanalEntry.Pair> props = header.getPropsList();
        if (props != null && props.size() > 0) {
            for (CanalEntry.Pair pair : props) {
                if ("curtGtidLct".equals(pair.getKey())) {
                    return pair.getValue();
                }
            }
        }
        return "";
    }
}

package com.dalianpai.canal;

import org.slf4j.MDC;
import org.springframework.util.Assert;

import com.alibaba.otter.canal.client.CanalConnector;
import com.alibaba.otter.canal.protocol.Message;

/**
 * @author WGR
 * @create 2020/9/4 -- 23:26
 */
public class AbstractCanalClientTest extends BaseCanalClientTest {
    public AbstractCanalClientTest(String destination){
        this(destination, null);
    }

    public AbstractCanalClientTest(String destination, CanalConnector connector){
        this.destination = destination;
        this.connector = connector;
    }

    protected void start() {
        Assert.notNull(connector, "connector is null");
        thread = new Thread(new Runnable() {

            @Override
            public void run() {
                process();
            }
        });

        thread.setUncaughtExceptionHandler(handler);
        running = true;
        thread.start();
    }

    protected void stop() {
        if (!running) {
            return;
        }
        running = false;
        if (thread != null) {
            try {
                thread.join();
            } catch (InterruptedException e) {
                // ignore
            }
        }

        MDC.remove("destination");
    }

    protected void process() {
        int batchSize = 5 * 1024;
        while (running) {
            try {
                MDC.put("destination", destination);
                connector.connect();
                connector.subscribe();
                while (running) {
                    Message message = connector.getWithoutAck(batchSize); // 获取指定数量的数据
                    long batchId = message.getId();
                    int size = message.getEntries().size();
                    if (batchId == -1 || size == 0) {
                        // try {
                        // Thread.sleep(1000);
                        // } catch (InterruptedException e) {
                        // }
                    } else {
                        printSummary(message, batchId, size);
                        printEntry(message.getEntries());
                    }

                    if (batchId != -1) {
                        connector.ack(batchId); // 提交确认
                    }
                }
            } catch (Throwable e) {
                logger.error("process error!", e);
                try {
                    Thread.sleep(1000L);
                } catch (InterruptedException e1) {
                    // ignore
                }

                connector.rollback(); // 处理失败, 回滚数据
            } finally {
                connector.disconnect();
                MDC.remove("destination");
            }
        }
    }
}

package com.dalianpai.canal;

import java.net.InetSocketAddress;

import com.alibaba.otter.canal.client.CanalConnector;
import com.alibaba.otter.canal.client.CanalConnectors;
import com.alibaba.otter.canal.common.utils.AddressUtils;

/**
 * @author WGR
 * @create 2020/9/4 -- 23:23
 */
public class  SimpleCanalClientTest extends AbstractCanalClientTest{

    public SimpleCanalClientTest(String destination){
        super(destination);
    }

    public static void main(String args[]) {
        // 根据ip，直接创建链接，无HA的功能
        String destination = "example";
        String ip = AddressUtils.getHostIp();
        CanalConnector connector = CanalConnectors.newSingleConnector(new InetSocketAddress("192.168.1.121", 11111),
                destination,
                "canal",
                "canal");

        final SimpleCanalClientTest clientTest = new SimpleCanalClientTest(destination);
        clientTest.setConnector(connector);
        clientTest.start();
        Runtime.getRuntime().addShutdownHook(new Thread() {

            @Override
            public void run() {
                try {
                    logger.info("## stop the canal client");
                    clientTest.stop();
                } catch (Throwable e) {
                    logger.warn("##something goes wrong when stopping canal:", e);
                } finally {
                    logger.info("## canal client is down.");
                }
            }

        });
    }

}

3.1 数据变更测试

3.1.1 创建表

创建tb_book表:

CREATE TABLE tb_book (
 id INT(11) NOT NULL AUTO_INCREMENT COMMENT '主键',
 name VARCHAR(100) NOT NULL COMMENT '书名',
 author VARCHAR(100) DEFAULT NULL COMMENT '作者',
 publishtime DATETIME DEFAULT NULL COMMENT '发行日期',
 price DOUBLE(10,2) DEFAULT NULL COMMENT '价格',
 publishgroup VARCHAR(100) DEFAULT NULL COMMENT '发版社',
 PRIMARY KEY (id)
) ENGINE=INNODB DEFAULT CHARSET=utf8mb4;

日志：

23:36:43.256 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - 
----------------> binlog[mysql-bin.000004:405] , name[canal,tb_book] , eventType : CREATE , executeTime : 1599233803000(2020-09-04 23:36:43) , gtid : () , delay : 256 ms

23:36:43.256 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest -  sql ----> CREATE TABLE `tb_book` (
`id` INT(11) NOT NULL AUTO_INCREMENT COMMENT '主键',
`name` VARCHAR(100) NOT NULL COMMENT '书名',
`author` VARCHAR(100) DEFAULT NULL COMMENT '作者',
`publishtime` DATETIME DEFAULT NULL COMMENT '发行日期',
`price` DOUBLE(10,2) DEFAULT NULL COMMENT '价格',
`publishgroup` VARCHAR(100) DEFAULT NULL COMMENT '发版社',
PRIMARY KEY (`id`)
) ENGINE=INNODB DEFAULT CHARSET=utf8mb4

23:36:57.670 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - 
****************************************************
* Batch Id: [4] ,count : [6] , memsize : [452] , Time : 2020-09-04 23:36:57
* Start : [mysql-bin.000004:966:1599233817000(2020-09-04 23:36:57)] 
* End : [mysql-bin.000004:1580:1599233817000(2020-09-04 23:36:57)] 
****************************************************

23:36:57.673 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - 
================> binlog[mysql-bin.000004:966] , executeTime : 1599233817000(2020-09-04 23:36:57) , gtid : () , delay : 671ms

3.1.2 插入数据

执行SQL :

INSERT INTO tb_book(NAME , author , publishtime , price , publishgroup) VALUES('白帽子讲安全协议','吴瀚请',NOW(),99.00,'电子工业出版社');

INSERT INTO tb_book(NAME , author , publishtime , price , publishgroup) VALUES('白帽子讲安全协议2','吴瀚请',NOW(),99.00,'电子工业出版社');

Canal数据监测结果 :

23:36:57.673 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest -  BEGIN ----> Thread id: 10
23:36:57.677 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - 
----------------> binlog[mysql-bin.000004:1111] , name[canal,tb_book] , eventType : INSERT , executeTime : 1599233817000(2020-09-04 23:36:57) , gtid : () , delay : 673 ms

23:36:57.677 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - id : 1    type=INT(11)    update=true

23:36:57.677 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - name : 白帽子讲安全协议    type=VARCHAR(100)    update=true

23:36:57.677 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - author : 吴瀚请    type=VARCHAR(100)    update=true

23:36:57.678 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - publishtime : 2020-09-04 15:36:57    type=DATETIME    update=true

23:36:57.678 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - price : 99.0    type=DOUBLE(10,2)    update=true

23:36:57.678 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - publishgroup : 电子工业出版社    type=VARCHAR(100)    update=true

23:36:57.680 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - ----------------

23:36:57.680 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest -  END ----> transaction id: 64
23:36:57.680 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - 
================> binlog[mysql-bin.000004:1224] , executeTime : 1599233817000(2020-09-04 23:36:57) , gtid : () , delay : 678ms

23:36:57.680 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - 
================> binlog[mysql-bin.000004:1320] , executeTime : 1599233817000(2020-09-04 23:36:57) , gtid : () , delay : 680ms

23:36:57.683 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest -  BEGIN ----> Thread id: 10
23:36:57.684 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - 
----------------> binlog[mysql-bin.000004:1465] , name[canal,tb_book] , eventType : INSERT , executeTime : 1599233817000(2020-09-04 23:36:57) , gtid : () , delay : 683 ms

23:36:57.684 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - id : 2    type=INT(11)    update=true

23:36:57.684 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - name : 白帽子讲安全协议 2    type=VARCHAR(100)    update=true

23:36:57.684 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - author : 吴瀚请    type=VARCHAR(100)    update=true

23:36:57.684 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - publishtime : 2020-09-04 15:36:57    type=DATETIME    update=true

23:36:57.684 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - price : 99.0    type=DOUBLE(10,2)    update=true

23:36:57.684 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - publishgroup : 电子工业出版社    type=VARCHAR(100)    update=true

23:36:57.684 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - ----------------

23:36:57.684 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest -  END ----> transaction id: 65
23:36:57.684 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - 
================> binlog[mysql-bin.000004:1580] , executeTime : 1599233817000(2020-09-04 23:36:57) , gtid : () , delay : 684ms

3.1.3 更新数据

执行SQL语句:

UPDATE tb_book SET NAME = '白帽子讲安全协议第二版' WHERE id = 2;

Canal数据监测结果:

23:39:30.367 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest -  BEGIN ----> Thread id: 10
23:39:30.367 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - 
----------------> binlog[mysql-bin.000004:1813] , name[canal,tb_book] , eventType : UPDATE , executeTime : 1599233970000(2020-09-04 23:39:30) , gtid : () , delay : 367 ms

23:39:30.367 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - id : 2    type=INT(11)

23:39:30.367 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - name : 白帽子讲安全协议第二版    type=VARCHAR(100)    update=true

23:39:30.367 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - author : 吴瀚请    type=VARCHAR(100)

23:39:30.367 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - publishtime : 2020-09-04 15:36:57    type=DATETIME

23:39:30.367 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - price : 99.0    type=DOUBLE(10,2)

23:39:30.367 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - publishgroup : 电子工业出版社    type=VARCHAR(100)

23:39:30.367 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - ----------------

23:39:30.367 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest -  END ----> transaction id: 72
23:39:30.367 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - 
================> binlog[mysql-bin.000004:2016] , executeTime : 1599233970000(2020-09-04 23:39:30) , gtid : () , delay : 367ms

23:40:02.977 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - 

3.1.4 删除数据

执行SQL :

DELETE FROM tb_book WHERE id = 1;

Canal数据监测结果:

23:40:02.977 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - 
================> binlog[mysql-bin.000004:2112] , executeTime : 1599234003000(2020-09-04 23:40:03) , gtid : () , delay : -23ms

23:40:02.977 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest -  BEGIN ----> Thread id: 10
23:40:02.978 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - 
----------------> binlog[mysql-bin.000004:2249] , name[canal,tb_book] , eventType : DELETE , executeTime : 1599234003000(2020-09-04 23:40:03) , gtid : () , delay : -23 ms

23:40:02.978 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - id : 1    type=INT(11)
23:40:02.978 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - name : 白帽子讲安全协议    type=VARCHAR(100)
23:40:02.978 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - author : 吴瀚请    type=VARCHAR(100)
23:40:02.978 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - publishtime : 2020-09-04 15:36:57    type=DATETIME
23:40:02.978 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - price : 99.0    type=DOUBLE(10,2)
23:40:02.978 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - publishgroup : 电子工业出版社    type=VARCHAR(100)
23:40:02.978 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - ----------------
23:40:02.979 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest -  END ----> transaction id: 79
23:40:02.979 [Thread-0] INFO  c.d.canal.AbstractCanalClientTest - 
================> binlog[mysql-bin.000004:2362] , executeTime : 1599234003000(2020-09-04 23:40:03) , gtid : () , delay : -22ms