| /** |
| * 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 java.io.IOException; |
| import java.net.InetSocketAddress; |
| import java.lang.reflect.Method; |
| |
| import junit.framework.TestCase; |
| |
| import java.util.Arrays; |
| |
| import org.apache.commons.logging.*; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.io.UTF8; |
| import org.apache.hadoop.io.Writable; |
| |
| import org.apache.hadoop.ipc.VersionedProtocol; |
| |
| /** Unit tests for RPC. */ |
| public class TestRPC extends TestCase { |
| private static final int PORT = 1234; |
| private static final String ADDRESS = "0.0.0.0"; |
| |
| public static final Log LOG = |
| LogFactory.getLog("org.apache.hadoop.ipc.TestRPC"); |
| |
| private static Configuration conf = new Configuration(); |
| |
| public TestRPC(String name) { super(name); } |
| |
| public interface TestProtocol extends VersionedProtocol { |
| public static final long versionID = 1L; |
| |
| void ping() throws IOException; |
| String echo(String value) throws IOException; |
| String[] echo(String[] value) throws IOException; |
| Writable echo(Writable value) throws IOException; |
| int add(int v1, int v2) throws IOException; |
| int add(int[] values) throws IOException; |
| int error() throws IOException; |
| void testServerGet() throws IOException; |
| } |
| |
| public class TestImpl implements TestProtocol { |
| |
| public long getProtocolVersion(String protocol, long clientVersion) { |
| return TestProtocol.versionID; |
| } |
| |
| public void ping() {} |
| |
| public String echo(String value) throws IOException { return value; } |
| |
| public String[] echo(String[] values) throws IOException { return values; } |
| |
| public Writable echo(Writable writable) { |
| return writable; |
| } |
| public int add(int v1, int v2) { |
| return v1 + v2; |
| } |
| |
| public int add(int[] values) { |
| int sum = 0; |
| for (int i = 0; i < values.length; i++) { |
| sum += values[i]; |
| } |
| return sum; |
| } |
| |
| public int error() throws IOException { |
| throw new IOException("bobo"); |
| } |
| |
| public void testServerGet() throws IOException { |
| if (!(Server.get() instanceof RPC.Server)) { |
| throw new IOException("Server.get() failed"); |
| } |
| } |
| |
| } |
| |
| public void testCalls() throws Exception { |
| Server server = RPC.getServer(new TestImpl(), ADDRESS, PORT, conf); |
| server.start(); |
| |
| InetSocketAddress addr = new InetSocketAddress(PORT); |
| TestProtocol proxy = |
| (TestProtocol)RPC.getProxy(TestProtocol.class, TestProtocol.versionID, addr, conf); |
| |
| proxy.ping(); |
| |
| String stringResult = proxy.echo("foo"); |
| assertEquals(stringResult, "foo"); |
| |
| stringResult = proxy.echo((String)null); |
| assertEquals(stringResult, null); |
| |
| String[] stringResults = proxy.echo(new String[]{"foo","bar"}); |
| assertTrue(Arrays.equals(stringResults, new String[]{"foo","bar"})); |
| |
| stringResults = proxy.echo((String[])null); |
| assertTrue(Arrays.equals(stringResults, null)); |
| |
| UTF8 utf8Result = (UTF8)proxy.echo(new UTF8("hello world")); |
| assertEquals(utf8Result, new UTF8("hello world")); |
| |
| utf8Result = (UTF8)proxy.echo((UTF8)null); |
| assertEquals(utf8Result, null); |
| |
| int intResult = proxy.add(1, 2); |
| assertEquals(intResult, 3); |
| |
| intResult = proxy.add(new int[] {1, 2}); |
| assertEquals(intResult, 3); |
| |
| boolean caught = false; |
| try { |
| proxy.error(); |
| } catch (IOException e) { |
| LOG.debug("Caught " + e); |
| caught = true; |
| } |
| assertTrue(caught); |
| |
| proxy.testServerGet(); |
| |
| // try some multi-calls |
| Method echo = |
| TestProtocol.class.getMethod("echo", new Class[] { String.class }); |
| String[] strings = (String[])RPC.call(echo, new String[][]{{"a"},{"b"}}, |
| new InetSocketAddress[] {addr, addr}, conf); |
| assertTrue(Arrays.equals(strings, new String[]{"a","b"})); |
| |
| Method ping = TestProtocol.class.getMethod("ping", new Class[] {}); |
| Object[] voids = (Object[])RPC.call(ping, new Object[][]{{},{}}, |
| new InetSocketAddress[] {addr, addr}, conf); |
| assertEquals(voids, null); |
| |
| server.stop(); |
| } |
| public static void main(String[] args) throws Exception { |
| |
| new TestRPC("test").testCalls(); |
| |
| } |
| |
| } |