| /** |
| * 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.hadoop.ipc; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import static org.apache.hadoop.fs.CommonConfigurationKeysPublic.*; |
| import org.apache.hadoop.ipc.TestRPC.TestProtocol; |
| import org.junit.Assert; |
| import org.junit.Test; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.InterruptedIOException; |
| import java.net.ConnectException; |
| import java.net.InetSocketAddress; |
| import java.nio.channels.ClosedByInterruptException; |
| |
| /** |
| * tests that the proxy can be interrupted |
| */ |
| public class TestRPCWaitForProxy extends Assert { |
| private static final String ADDRESS = "0.0.0.0"; |
| private static final Logger |
| LOG = LoggerFactory.getLogger(TestRPCWaitForProxy.class); |
| |
| private static final Configuration conf = new Configuration(); |
| |
| /** |
| * This tests that the time-bounded wait for a proxy operation works, and |
| * times out. |
| * |
| * @throws Throwable any exception other than that which was expected |
| */ |
| @Test(timeout = 10000) |
| public void testWaitForProxy() throws Throwable { |
| RpcThread worker = new RpcThread(0); |
| worker.start(); |
| worker.join(); |
| Throwable caught = worker.getCaught(); |
| assertNotNull("No exception was raised", caught); |
| if (!(caught instanceof ConnectException)) { |
| throw caught; |
| } |
| } |
| |
| /** |
| * This test sets off a blocking thread and then interrupts it, before |
| * checking that the thread was interrupted |
| * |
| * @throws Throwable any exception other than that which was expected |
| */ |
| @Test(timeout = 10000) |
| public void testInterruptedWaitForProxy() throws Throwable { |
| RpcThread worker = new RpcThread(100); |
| worker.start(); |
| Thread.sleep(1000); |
| assertTrue("worker hasn't started", worker.waitStarted); |
| worker.interrupt(); |
| worker.join(); |
| Throwable caught = worker.getCaught(); |
| assertNotNull("No exception was raised", caught); |
| // looking for the root cause here, which can be wrapped |
| // as part of the NetUtils work. Having this test look |
| // a the type of exception there would be brittle to improvements |
| // in exception diagnostics. |
| Throwable cause = caught.getCause(); |
| if (cause == null) { |
| // no inner cause, use outer exception as root cause. |
| cause = caught; |
| } |
| if (!(cause instanceof InterruptedIOException) |
| && !(cause instanceof ClosedByInterruptException)) { |
| throw caught; |
| } |
| } |
| |
| /** |
| * This thread waits for a proxy for the specified timeout, and retains any |
| * throwable that was raised in the process |
| */ |
| |
| private class RpcThread extends Thread { |
| private Throwable caught; |
| private int connectRetries; |
| private volatile boolean waitStarted = false; |
| |
| private RpcThread(int connectRetries) { |
| this.connectRetries = connectRetries; |
| } |
| @Override |
| public void run() { |
| try { |
| Configuration config = new Configuration(conf); |
| config.setInt(IPC_CLIENT_CONNECT_MAX_RETRIES_KEY, |
| connectRetries); |
| config.setInt( |
| IPC_CLIENT_CONNECT_MAX_RETRIES_ON_SOCKET_TIMEOUTS_KEY, |
| connectRetries); |
| waitStarted = true; |
| TestProtocol proxy = RPC.waitForProxy(TestProtocol.class, |
| TestProtocol.versionID, |
| new InetSocketAddress(ADDRESS, 20), |
| config, |
| 15000L); |
| proxy.echo(""); |
| } catch (Throwable throwable) { |
| caught = throwable; |
| } |
| } |
| |
| public Throwable getCaught() { |
| return caught; |
| } |
| } |
| } |