package org.apache.helix.mock.participant;
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
import org.I0Itec.zkclient.DataUpdater;
import org.I0Itec.zkclient.exception.ZkNoNodeException;
import org.apache.helix.AccessOption;
import org.apache.helix.HelixManager;
import org.apache.helix.NotificationContext;
import org.apache.helix.ZNRecord;
import org.apache.helix.api.id.PartitionId;
import org.apache.helix.model.Message;
import org.apache.helix.store.zk.ZkHelixPropertyStore;
// simulate access property store and update one znode
public class StoreAccessOneNodeTransition extends MockTransition {
@Override
public void doTransition(Message message, NotificationContext context) {
HelixManager manager = context.getManager();
ZkHelixPropertyStore<ZNRecord> store = manager.getHelixPropertyStore();
final String setPath = "/TEST_PERF/set";
final String updatePath = "/TEST_PERF/update";
final PartitionId key = message.getPartitionId();
try {
// get/set once
ZNRecord record = null;
try {
record = store.get(setPath, null, 0);
} catch (ZkNoNodeException e) {
record = new ZNRecord(setPath);
}
record.setSimpleField("setTimestamp", "" + System.currentTimeMillis());
store.set(setPath, record, AccessOption.PERSISTENT);
// update once
store.update(updatePath, new DataUpdater<ZNRecord>() {
@Override
public ZNRecord update(ZNRecord currentData) {
if (currentData == null) {
currentData = new ZNRecord(updatePath);
}
currentData.setSimpleField(key.stringify(), "" + System.currentTimeMillis());
return currentData;
}
}, AccessOption.PERSISTENT);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}