/**
* 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.
*/
package org.apache.s4.deploy;
import java.io.IOException;
import org.apache.s4.comm.topology.ZkClient;
import org.apache.s4.core.App;
import org.apache.s4.core.ProcessingElement;
import org.apache.zookeeper.CreateMode;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.google.common.io.ByteStreams;
public class SimplePE extends ProcessingElement {
private static Logger logger = LoggerFactory.getLogger(SimplePE.class);
private ZkClient zk;
public SimplePE() {
}
public SimplePE(App app) {
super(app);
}
public void onEvent(org.apache.s4.base.Event event) {
try {
LoggerFactory.getLogger(getClass()).debug("processing envent {}", event.get("line"));
// test s4r resource access
// need to strip ASL text from reference content file
String strippedContent = new String(
ByteStreams.toByteArray(getClass().getResourceAsStream("/resource.txt"))).substring(new String(
ByteStreams.toByteArray(getClass().getResourceAsStream("/ASL2.txt"))).length());
zk.create("/resourceData", strippedContent, CreateMode.PERSISTENT);
// test event processing
zk.create("/onEvent@" + event.get("line"), new byte[0], CreateMode.PERSISTENT);
zk.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
@Override
protected void onCreate() {
if (zk == null) {
zk = new ZkClient("localhost:" + 2181);
}
}
@Override
protected void onRemove() {
}
}