/*
* Copyright 1999-2015 dangdang.com.
* <p>
* 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.
* </p>
*/
package com.dangdang.ddframe.job.lite.internal.listener;
import com.google.common.base.Charsets;
import org.apache.curator.framework.CuratorFramework;
import org.apache.curator.framework.recipes.cache.ChildData;
import org.apache.curator.framework.recipes.cache.TreeCacheEvent;
import org.apache.curator.framework.recipes.cache.TreeCacheEvent.Type;
import org.apache.curator.framework.recipes.cache.TreeCacheListener;
/**
* 作业注册中心的监听器.
*
* @author zhangliang
*/
public abstract class AbstractJobListener implements TreeCacheListener {
@Override
public final void childEvent(final CuratorFramework client, final TreeCacheEvent event) throws Exception {
ChildData childData = event.getData();
if (null == childData) {
return;
}
String path = childData.getPath();
if (path.isEmpty()) {
return;
}
dataChanged(path, event.getType(), null == childData.getData() ? "" : new String(childData.getData(), Charsets.UTF_8));
}
protected abstract void dataChanged(final String path, final Type eventType, final String data);
}