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fixed issue #1220, 解决一下no alive canal server重试过于频繁

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agapple
2018-12-06 10:31:13 +08:00
parent 19e164b599
commit 1b11aa1d21
3 changed files with 42 additions and 2 deletions
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5
client/src/main/java/com/alibaba/otter/canal/client/impl/ClusterNodeAccessStrategy.java
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@@ -15,7 +15,6 @@ import com.alibaba.otter.canal.common.utils.JsonUtils;
import com.alibaba.otter.canal.common.zookeeper.ZkClientx;
import com.alibaba.otter.canal.common.zookeeper.ZookeeperPathUtils;
import com.alibaba.otter.canal.common.zookeeper.running.ServerRunningData;
import com.alibaba.otter.canal.protocol.exception.CanalClientException;
/**
* 集群模式的调度策略
@@ -25,6 +24,7 @@ import com.alibaba.otter.canal.protocol.exception.CanalClientException;
*/
public class ClusterNodeAccessStrategy implements CanalNodeAccessStrategy {
private String destination;
private IZkChildListener childListener; // 监听所有的服务器列表
private IZkDataListener dataListener; // 监听当前的工作节点
private ZkClientx zkClient;
@@ -32,6 +32,7 @@ public class ClusterNodeAccessStrategy implements CanalNodeAccessStrategy {
private volatile InetSocketAddress runningAddress = null;
public ClusterNodeAccessStrategy(String destination, ZkClientx zkClient){
this.destination = destination;
this.zkClient = zkClient;
childListener = new IZkChildListener() {
@@ -73,7 +74,7 @@ public class ClusterNodeAccessStrategy implements CanalNodeAccessStrategy {
} else if (!currentAddress.isEmpty()) { // 如果不存在已经启动的服务，可能服务是一种lazy启动，随机选择一台触发服务器进行启动
return currentAddress.get(0);// 默认返回第一个节点，之前已经做过shuffle
} else {
throw new CanalClientException("no alive canal server");
throw new ServerNotFoundException("no alive canal server for " + destination);
}
}

29
client/src/main/java/com/alibaba/otter/canal/client/impl/ServerNotFoundException.java Normal file
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@@ -0,0 +1,29 @@
package com.alibaba.otter.canal.client.impl;
import com.alibaba.otter.canal.protocol.exception.CanalClientException;
public class ServerNotFoundException extends CanalClientException {
private static final long serialVersionUID = -3471518241911601774L;
public ServerNotFoundException(String errorCode, String errorDesc, Throwable cause){
super(errorCode, errorDesc, cause);
}
public ServerNotFoundException(String errorCode, String errorDesc){
super(errorCode, errorDesc);
}
public ServerNotFoundException(String errorCode, Throwable cause){
super(errorCode, cause);
}
public ServerNotFoundException(String errorCode){
super(errorCode);
}
public ServerNotFoundException(Throwable cause){
super(cause);
}
}

10
client/src/main/java/com/alibaba/otter/canal/client/impl/running/ClientRunningMonitor.java
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@@ -16,6 +16,7 @@ import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.slf4j.MDC;
import com.alibaba.otter.canal.client.impl.ServerNotFoundException;
import com.alibaba.otter.canal.common.AbstractCanalLifeCycle;
import com.alibaba.otter.canal.common.utils.BooleanMutex;
import com.alibaba.otter.canal.common.utils.JsonUtils;
@@ -141,6 +142,15 @@ public class ClientRunningMonitor extends AbstractCanalLifeCycle {
logger.error(MessageFormat.format("There is an error when execute initRunning method, with destination [{0}].",
destination),
t);
// fixed issue 1220, 针对server节点不工作避免死循环
if (t instanceof ServerNotFoundException) {
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
}
}
// 出现任何异常尝试release
releaseRunning();
throw new CanalClientException("something goes wrong in initRunning method. ", t);