| package org.apache.helix.zookeeper.impl; |
| |
| /* |
| * 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 java.io.IOException; |
| import java.lang.reflect.Method; |
| import java.net.ServerSocket; |
| import java.util.Arrays; |
| |
| import org.apache.helix.zookeeper.zkclient.ZkServer; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.testng.Assert; |
| |
| |
| public class TestHelper { |
| private static final Logger LOG = LoggerFactory.getLogger(TestHelper.class); |
| public static final long WAIT_DURATION = 60 * 1000L; // 60 seconds |
| |
| /** |
| * Returns a unused random port. |
| */ |
| public static int getRandomPort() |
| throws IOException { |
| ServerSocket sock = new ServerSocket(); |
| sock.bind(null); |
| int port = sock.getLocalPort(); |
| sock.close(); |
| |
| return port; |
| } |
| |
| static public void stopZkServer(ZkServer zkServer) { |
| if (zkServer != null) { |
| zkServer.shutdown(); |
| System.out.println( |
| "Shut down zookeeper at port " + zkServer.getPort() + " in thread " + Thread |
| .currentThread().getName()); |
| } |
| } |
| |
| /** |
| * generic method for verification with a timeout |
| * @param verifierName |
| * @param args |
| */ |
| public static void verifyWithTimeout(String verifierName, long timeout, Object... args) { |
| final long sleepInterval = 1000; // in ms |
| final int loop = (int) (timeout / sleepInterval) + 1; |
| try { |
| boolean result = false; |
| int i = 0; |
| for (; i < loop; i++) { |
| Thread.sleep(sleepInterval); |
| // verifier should be static method |
| result = (Boolean) TestHelper.getMethod(verifierName).invoke(null, args); |
| |
| if (result) { |
| break; |
| } |
| } |
| |
| System.err.println( |
| verifierName + ": wait " + ((i + 1) * 1000) + "ms to verify " + " (" + result + ")"); |
| LOG.debug("args:" + Arrays.toString(args)); |
| // System.err.println("args:" + Arrays.toString(args)); |
| |
| if (!result) { |
| LOG.error(verifierName + " fails"); |
| LOG.error("args:" + Arrays.toString(args)); |
| } |
| |
| Assert.assertTrue(result); |
| } catch (Exception e) { |
| LOG.error("Exception in verify: " + verifierName, e); |
| } |
| } |
| |
| private static Method getMethod(String name) { |
| Method[] methods = TestHelper.class.getMethods(); |
| for (Method method : methods) { |
| if (name.equals(method.getName())) { |
| return method; |
| } |
| } |
| return null; |
| } |
| |
| public static String getTestMethodName() { |
| StackTraceElement[] calls = Thread.currentThread().getStackTrace(); |
| return calls[2].getMethodName(); |
| } |
| |
| public static String getTestClassName() { |
| StackTraceElement[] calls = Thread.currentThread().getStackTrace(); |
| String fullClassName = calls[2].getClassName(); |
| return fullClassName.substring(fullClassName.lastIndexOf('.') + 1); |
| } |
| |
| public static void resetSystemProperty(String key, String originValue) { |
| if (originValue == null) { |
| System.clearProperty(key); |
| } else { |
| System.setProperty(key, originValue); |
| } |
| } |
| |
| public interface Verifier { |
| boolean verify() |
| throws Exception; |
| } |
| |
| public static boolean verify(Verifier verifier, long timeout) |
| throws Exception { |
| long start = System.currentTimeMillis(); |
| do { |
| boolean result = verifier.verify(); |
| if (result || (System.currentTimeMillis() - start) > timeout) { |
| return result; |
| } |
| Thread.sleep(50); |
| } while (true); |
| } |
| } |