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fixed issue #483 , support show slave hosts

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agapple
2018-01-10 14:35:26 +08:00
parent 9316a3df6d
commit 91ac0e30aa
4 changed files with 195 additions and 4 deletions
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35
parse/src/main/java/com/alibaba/otter/canal/parse/inbound/mysql/MysqlConnection.java
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@@ -14,7 +14,9 @@ import com.alibaba.otter.canal.parse.driver.mysql.MysqlQueryExecutor;
import com.alibaba.otter.canal.parse.driver.mysql.MysqlUpdateExecutor;
import com.alibaba.otter.canal.parse.driver.mysql.packets.HeaderPacket;
import com.alibaba.otter.canal.parse.driver.mysql.packets.client.BinlogDumpCommandPacket;
import com.alibaba.otter.canal.parse.driver.mysql.packets.client.RegisterSlaveCommandPacket;
import com.alibaba.otter.canal.parse.driver.mysql.packets.client.SemiAckCommandPacket;
import com.alibaba.otter.canal.parse.driver.mysql.packets.server.ErrorPacket;
import com.alibaba.otter.canal.parse.driver.mysql.packets.server.ResultSetPacket;
import com.alibaba.otter.canal.parse.driver.mysql.utils.PacketManager;
import com.alibaba.otter.canal.parse.exception.CanalParseException;
@@ -130,6 +132,7 @@ public class MysqlConnection implements ErosaConnection {
public void dump(String binlogfilename, Long binlogPosition, SinkFunction func) throws IOException {
updateSettings();
sendRegisterSlave();
sendBinlogDump(binlogfilename, binlogPosition);
DirectLogFetcher fetcher = new DirectLogFetcher(connector.getReceiveBufferSize());
fetcher.start(connector.getChannel());
@@ -157,11 +160,40 @@ public class MysqlConnection implements ErosaConnection {
throw new NullPointerException("Not implement yet");
}
private void sendRegisterSlave() throws IOException {
RegisterSlaveCommandPacket cmd = new RegisterSlaveCommandPacket();
cmd.reportHost = authInfo.getAddress().getAddress().getHostAddress();
cmd.reportPasswd = authInfo.getPassword();
cmd.reportUser = authInfo.getUsername();
cmd.reportPort = authInfo.getAddress().getPort(); // 暂时先用master节点的port
cmd.serverId = this.slaveId;
byte[] cmdBody = cmd.toBytes();
logger.info("Register slave {}", cmd);
HeaderPacket header = new HeaderPacket();
header.setPacketBodyLength(cmdBody.length);
header.setPacketSequenceNumber((byte) 0x00);
PacketManager.writePkg(connector.getChannel(), header.toBytes(), cmdBody);
header = PacketManager.readHeader(connector.getChannel(), 4);
byte[] body = PacketManager.readBytes(connector.getChannel(), header.getPacketBodyLength());
assert body != null;
if (body[0] < 0) {
if (body[0] == -1) {
ErrorPacket err = new ErrorPacket();
err.fromBytes(body);
throw new IOException("Error When doing Register slave:" + err.toString());
} else {
throw new IOException("unpexpected packet with field_count=" + body[0]);
}
}
}
private void sendBinlogDump(String binlogfilename, Long binlogPosition) throws IOException {
BinlogDumpCommandPacket binlogDumpCmd = new BinlogDumpCommandPacket();
binlogDumpCmd.binlogFileName = binlogfilename;
binlogDumpCmd.binlogPosition = binlogPosition;
// binlogDumpCmd.slaveServerId = this.slaveId;
binlogDumpCmd.slaveServerId = this.slaveId;
byte[] cmdBody = binlogDumpCmd.toBytes();
@@ -185,7 +217,6 @@ public class MysqlConnection implements ErosaConnection {
semiAckHeader.setPacketBodyLength(cmdBody.length);
semiAckHeader.setPacketSequenceNumber((byte) 0x00);
PacketManager.writePkg(connector.getChannel(), semiAckHeader.toBytes(), cmdBody);
}
public MysqlConnection fork() {

102
parse/src/test/java/com/alibaba/otter/canal/parse/DirectLogFetcherTest.java
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@@ -3,27 +3,38 @@ package com.alibaba.otter.canal.parse;
import java.io.IOException;
import java.net.InetSocketAddress;
import org.apache.commons.lang.StringUtils;
import org.junit.Assert;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.alibaba.otter.canal.parse.driver.mysql.MysqlConnector;
import com.alibaba.otter.canal.parse.driver.mysql.MysqlUpdateExecutor;
import com.alibaba.otter.canal.parse.driver.mysql.packets.HeaderPacket;
import com.alibaba.otter.canal.parse.driver.mysql.packets.client.BinlogDumpCommandPacket;
import com.alibaba.otter.canal.parse.driver.mysql.packets.client.RegisterSlaveCommandPacket;
import com.alibaba.otter.canal.parse.driver.mysql.packets.server.ErrorPacket;
import com.alibaba.otter.canal.parse.driver.mysql.utils.PacketManager;
import com.alibaba.otter.canal.parse.inbound.mysql.dbsync.DirectLogFetcher;
import com.taobao.tddl.dbsync.binlog.LogContext;
import com.taobao.tddl.dbsync.binlog.LogDecoder;
import com.taobao.tddl.dbsync.binlog.LogEvent;
import com.taobao.tddl.dbsync.binlog.event.RotateLogEvent;
public class DirectLogFetcherTest {
protected final Logger logger = LoggerFactory.getLogger(this.getClass());
@Test
public void testSimple() {
DirectLogFetcher fetcher = new DirectLogFetcher();
try {
MysqlConnector connector = new MysqlConnector(new InetSocketAddress("127.0.0.1", 3306), "xxxxx", "xxxxx");
MysqlConnector connector = new MysqlConnector(new InetSocketAddress("127.0.0.1", 3306), "xxxx", "xxxx");
connector.connect();
sendBinlogDump(connector, "mysql-bin.001016", 4L, 3);
updateSettings(connector);
sendRegisterSlave(connector, 3);
sendBinlogDump(connector, "mysql-bin.000001", 4L, 3);
fetcher.start(connector.getChannel());
@@ -42,6 +53,7 @@ public class DirectLogFetcherTest {
case LogEvent.ROTATE_EVENT:
// binlogFileName = ((RotateLogEvent)
// event).getFilename();
System.out.println(((RotateLogEvent) event).getFilename());
break;
case LogEvent.WRITE_ROWS_EVENT_V1:
case LogEvent.WRITE_ROWS_EVENT:
@@ -82,6 +94,33 @@ public class DirectLogFetcherTest {
}
private void sendRegisterSlave(MysqlConnector connector, int slaveId) throws IOException {
RegisterSlaveCommandPacket cmd = new RegisterSlaveCommandPacket();
cmd.reportHost = connector.getAddress().getAddress().getHostAddress();
cmd.reportPasswd = connector.getPassword();
cmd.reportUser = connector.getUsername();
cmd.serverId = slaveId;
byte[] cmdBody = cmd.toBytes();
HeaderPacket header = new HeaderPacket();
header.setPacketBodyLength(cmdBody.length);
header.setPacketSequenceNumber((byte) 0x00);
PacketManager.writePkg(connector.getChannel(), header.toBytes(), cmdBody);
header = PacketManager.readHeader(connector.getChannel(), 4);
byte[] body = PacketManager.readBytes(connector.getChannel(), header.getPacketBodyLength());
assert body != null;
if (body[0] < 0) {
if (body[0] == -1) {
ErrorPacket err = new ErrorPacket();
err.fromBytes(body);
throw new IOException("Error When doing Register slave:" + err.toString());
} else {
throw new IOException("unpexpected packet with field_count=" + body[0]);
}
}
}
private void sendBinlogDump(MysqlConnector connector, String binlogfilename, Long binlogPosition, int slaveId)
throws IOException {
BinlogDumpCommandPacket binlogDumpCmd = new BinlogDumpCommandPacket();
@@ -95,4 +134,63 @@ public class DirectLogFetcherTest {
binlogDumpHeader.setPacketSequenceNumber((byte) 0x00);
PacketManager.writePkg(connector.getChannel(), binlogDumpHeader.toBytes(), cmdBody);
}
private void updateSettings(MysqlConnector connector) throws IOException {
try {
update("set wait_timeout=9999999", connector);
} catch (Exception e) {
logger.warn("update wait_timeout failed", e);
}
try {
update("set net_write_timeout=1800", connector);
} catch (Exception e) {
logger.warn("update net_write_timeout failed", e);
}
try {
update("set net_read_timeout=1800", connector);
} catch (Exception e) {
logger.warn("update net_read_timeout failed", e);
}
try {
// 设置服务端返回结果时不做编码转化，直接按照数据库的二进制编码进行发送，由客户端自己根据需求进行编码转化
update("set names 'binary'", connector);
} catch (Exception e) {
logger.warn("update names failed", e);
}
try {
// mysql5.6针对checksum支持需要设置session变量
// 如果不设置会出现错误： Slave can not handle replication events with the
// checksum that master is configured to log
// 但也不能乱设置，需要和mysql server的checksum配置一致，不然RotateLogEvent会出现乱码
update("set @master_binlog_checksum= '@@global.binlog_checksum'", connector);
} catch (Exception e) {
logger.warn("update master_binlog_checksum failed", e);
}
try {
// 参考:https://github.com/alibaba/canal/issues/284
// mysql5.6需要设置slave_uuid避免被server kill链接
update("set @slave_uuid=uuid()", connector);
} catch (Exception e) {
if (!StringUtils.contains(e.getMessage(), "Unknown system variable")) {
logger.warn("update slave_uuid failed", e);
}
}
try {
// mariadb针对特殊的类型，需要设置session变量
update("SET @mariadb_slave_capability='" + LogEvent.MARIA_SLAVE_CAPABILITY_MINE + "'", connector);
} catch (Exception e) {
logger.warn("update mariadb_slave_capability failed", e);
}
}
public void update(String cmd, MysqlConnector connector) throws IOException {
MysqlUpdateExecutor exector = new MysqlUpdateExecutor(connector);
exector.update(cmd);
}
}