| /** |
| * 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 com.alibaba.jstorm.utils; |
| |
| import java.io.BufferedOutputStream; |
| import java.io.DataOutputStream; |
| import java.io.File; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class JStormUtilsTest { |
| private static final Logger LOG = LoggerFactory.getLogger(JStormUtilsTest.class); |
| |
| private static final int RESTART_TIMES = 1000; |
| |
| private static String cmd = ""; |
| |
| private static String pidDir = "/tmp/pids"; |
| |
| private static int killedTimes = 0; |
| private static int forkTimes = 0; |
| |
| public static void testRestartProcess() { |
| final int intervalSec = Integer.valueOf("10"); |
| new Thread(new Runnable() { |
| |
| @Override |
| public void run() { |
| LOG.info("Begin to start fork thread"); |
| Map<String, String> environment = new HashMap<String, String>(); |
| |
| // TODO Auto-generated method stub |
| while (forkTimes < RESTART_TIMES) { |
| |
| try { |
| JStormUtils.launch_process(cmd + " " + forkTimes, environment, true); |
| } catch (IOException e) { |
| // TODO Auto-generated catch block |
| LOG.error("Failed to fork process " + cmd + forkTimes, e); |
| continue; |
| } |
| |
| LOG.info("Successfully launch " + forkTimes); |
| |
| JStormUtils.sleepMs(1000); |
| |
| forkTimes++; |
| |
| } |
| LOG.info("Successfully shutdown fok thread"); |
| } |
| |
| }).start(); |
| |
| new Thread(new Runnable() { |
| |
| @Override |
| public void run() { |
| LOG.info("Begin to start killing thread"); |
| |
| File file = new File(pidDir); |
| // TODO Auto-generated method stub |
| while (killedTimes < RESTART_TIMES) { |
| File[] pids = file.listFiles(); |
| if (pids == null) { |
| JStormUtils.sleepMs(100); |
| continue; |
| } |
| |
| for (File pidFile : pids) { |
| String pid = pidFile.getName(); |
| |
| JStormUtils.ensure_process_killed(Integer.valueOf(pid)); |
| |
| killedTimes++; |
| |
| pidFile.delete(); |
| } |
| |
| JStormUtils.sleepMs(100); |
| |
| } |
| LOG.info("Successfully shutdown killing thread"); |
| } |
| |
| }).start(); |
| |
| while (killedTimes < RESTART_TIMES) { |
| JStormUtils.sleepMs(100); |
| } |
| } |
| |
| public static void fillData() { |
| Map<Long, String> map = new HashMap<Long, String>(); |
| |
| for (long l = 0; l < 1000000; l++) { |
| map.put(l, String.valueOf(l)); |
| } |
| } |
| |
| public static void testJar(String id) { |
| try { |
| |
| PathUtils.local_mkdirs(pidDir); |
| } catch (IOException e) { |
| LOG.error("Failed to rmr " + pidDir, e); |
| } |
| |
| fillData(); |
| LOG.info("Finish load data"); |
| |
| String pid = JStormUtils.process_pid(); |
| |
| String pidFile = pidDir + File.separator + pid; |
| |
| try { |
| PathUtils.touch(pidFile); |
| } catch (IOException e) { |
| // TODO Auto-generated catch block |
| LOG.error("Failed to touch " + pidFile, e); |
| } |
| try { |
| |
| DataOutputStream raf = new DataOutputStream(new BufferedOutputStream(new FileOutputStream(new File(pidFile), true))); |
| |
| raf.writeBytes(pid); |
| } catch (Exception e) { |
| LOG.error("", e); |
| } |
| |
| while (true) { |
| JStormUtils.sleepMs(1000); |
| LOG.info(id + " is living"); |
| } |
| |
| } |
| |
| public static void main(String[] args) { |
| |
| if (args.length == 0) { |
| testRestartProcess(); |
| } else { |
| testJar(args[0]); |
| } |
| } |
| |
| } |