| /** |
| * 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 |
| zk.create("/resourceData", |
| new String(ByteStreams.toByteArray(getClass().getResourceAsStream("/resource.txt"))), |
| 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() { |
| } |
| |
| } |