| /** |
| * 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.yarn.ipc; |
| |
| import java.io.FileNotFoundException; |
| import java.io.IOException; |
| |
| import org.junit.Assert; |
| |
| import org.apache.hadoop.ipc.RemoteException; |
| import org.apache.hadoop.yarn.exceptions.YarnException; |
| import org.junit.Test; |
| |
| import com.google.protobuf.ServiceException; |
| |
| public class TestRPCUtil { |
| |
| @Test |
| public void testUnknownExceptionUnwrapping() { |
| Class<? extends Throwable> exception = YarnException.class; |
| String className = "UnknownException.class"; |
| verifyRemoteExceptionUnwrapping(exception, className); |
| } |
| |
| @Test |
| public void testRemoteIOExceptionUnwrapping() { |
| Class<? extends Throwable> exception = IOException.class; |
| verifyRemoteExceptionUnwrapping(exception, exception.getName()); |
| } |
| |
| @Test |
| public void testRemoteIOExceptionDerivativeUnwrapping() { |
| // Test IOException sub-class |
| Class<? extends Throwable> exception = FileNotFoundException.class; |
| verifyRemoteExceptionUnwrapping(exception, exception.getName()); |
| } |
| |
| @Test |
| public void testRemoteYarnExceptionUnwrapping() { |
| Class<? extends Throwable> exception = YarnException.class; |
| verifyRemoteExceptionUnwrapping(exception, exception.getName()); |
| |
| } |
| |
| @Test |
| public void testRemoteYarnExceptionDerivativeUnwrapping() { |
| Class<? extends Throwable> exception = YarnTestException.class; |
| verifyRemoteExceptionUnwrapping(exception, exception.getName()); |
| } |
| |
| @Test |
| public void testRemoteRuntimeExceptionUnwrapping() { |
| Class<? extends Throwable> exception = NullPointerException.class; |
| verifyRemoteExceptionUnwrapping(exception, exception.getName()); |
| } |
| |
| @Test |
| public void testUnexpectedRemoteExceptionUnwrapping() { |
| // Non IOException, YarnException thrown by the remote side. |
| Class<? extends Throwable> exception = Exception.class; |
| verifyRemoteExceptionUnwrapping(RemoteException.class, exception.getName()); |
| } |
| |
| @Test |
| public void testRemoteYarnExceptionWithoutStringConstructor() { |
| // Derivatives of YarnException should always define a string constructor. |
| Class<? extends Throwable> exception = YarnTestExceptionNoConstructor.class; |
| verifyRemoteExceptionUnwrapping(RemoteException.class, exception.getName()); |
| } |
| |
| @Test |
| public void testRPCServiceExceptionUnwrapping() { |
| String message = "ServiceExceptionMessage"; |
| ServiceException se = new ServiceException(message); |
| |
| Throwable t = null; |
| try { |
| RPCUtil.unwrapAndThrowException(se); |
| } catch (Throwable thrown) { |
| t = thrown; |
| } |
| |
| Assert.assertTrue(IOException.class.isInstance(t)); |
| Assert.assertTrue(t.getMessage().contains(message)); |
| } |
| |
| @Test |
| public void testRPCIOExceptionUnwrapping() { |
| String message = "DirectIOExceptionMessage"; |
| IOException ioException = new FileNotFoundException(message); |
| ServiceException se = new ServiceException(ioException); |
| |
| Throwable t = null; |
| try { |
| RPCUtil.unwrapAndThrowException(se); |
| } catch (Throwable thrown) { |
| t = thrown; |
| } |
| Assert.assertTrue(FileNotFoundException.class.isInstance(t)); |
| Assert.assertTrue(t.getMessage().contains(message)); |
| } |
| |
| @Test |
| public void testRPCRuntimeExceptionUnwrapping() { |
| String message = "RPCRuntimeExceptionUnwrapping"; |
| RuntimeException re = new NullPointerException(message); |
| ServiceException se = new ServiceException(re); |
| |
| Throwable t = null; |
| try { |
| RPCUtil.unwrapAndThrowException(se); |
| } catch (Throwable thrown) { |
| t = thrown; |
| } |
| |
| Assert.assertTrue(NullPointerException.class.isInstance(t)); |
| Assert.assertTrue(t.getMessage().contains(message)); |
| } |
| |
| private void verifyRemoteExceptionUnwrapping( |
| Class<? extends Throwable> expectedLocalException, |
| String realExceptionClassName) { |
| String message = realExceptionClassName + "Message"; |
| RemoteException re = new RemoteException(realExceptionClassName, message); |
| ServiceException se = new ServiceException(re); |
| |
| Throwable t = null; |
| try { |
| RPCUtil.unwrapAndThrowException(se); |
| } catch (Throwable thrown) { |
| t = thrown; |
| } |
| |
| Assert.assertTrue("Expected exception [" + expectedLocalException |
| + "] but found " + t, expectedLocalException.isInstance(t)); |
| Assert.assertTrue( |
| "Expected message [" + message + "] but found " + t.getMessage(), t |
| .getMessage().contains(message)); |
| } |
| |
| private static class YarnTestException extends YarnException { |
| private static final long serialVersionUID = 1L; |
| |
| @SuppressWarnings("unused") |
| public YarnTestException(String message) { |
| super(message); |
| } |
| } |
| |
| private static class YarnTestExceptionNoConstructor extends |
| YarnException { |
| private static final long serialVersionUID = 1L; |
| |
| } |
| } |