com.hazelcast.cluster.impl.operations.MasterClaimOperation Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2016, Hazelcast, Inc. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.hazelcast.cluster.impl.operations;
import com.hazelcast.cluster.Joiner;
import com.hazelcast.cluster.impl.TcpIpJoiner;
import com.hazelcast.instance.Node;
import com.hazelcast.logging.ILogger;
import com.hazelcast.nio.Address;
import com.hazelcast.spi.AbstractOperation;
import com.hazelcast.spi.impl.NodeEngineImpl;
public class MasterClaimOperation extends AbstractOperation implements JoinOperation {
private transient boolean approvedAsMaster;
@Override
public void run() {
final NodeEngineImpl nodeEngine = (NodeEngineImpl) getNodeEngine();
Node node = nodeEngine.getNode();
Joiner joiner = node.getJoiner();
final ILogger logger = node.getLogger(getClass().getName());
if (joiner instanceof TcpIpJoiner) {
TcpIpJoiner tcpIpJoiner = (TcpIpJoiner) joiner;
final Address endpoint = getCallerAddress();
final Address masterAddress = node.getMasterAddress();
approvedAsMaster = !tcpIpJoiner.isClaimingMaster() && !node.isMaster()
&& (masterAddress == null || masterAddress.equals(endpoint));
} else {
approvedAsMaster = false;
logger.warning("This node requires MulticastJoin strategy!");
}
if (logger.isFinestEnabled()) {
logger.finest("Sending '" + approvedAsMaster + "' for master claim of node: " + getCallerAddress());
}
}
@Override
public Object getResponse() {
return approvedAsMaster;
}
}