TestSocketFactory.java
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- /**
- * 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.net.Socket;
- import java.net.SocketAddress;
- import junit.framework.TestCase;
- import org.apache.hadoop.conf.Configuration;
- import org.apache.hadoop.hdfs.DistributedFileSystem;
- import org.apache.hadoop.hdfs.MiniDFSCluster;
- import org.apache.hadoop.fs.FileSystem;
- import org.apache.hadoop.fs.Path;
- import org.apache.hadoop.mapred.JobClient;
- import org.apache.hadoop.mapred.JobConf;
- import org.apache.hadoop.mapred.JobStatus;
- import org.apache.hadoop.mapred.MiniMRCluster;
- import org.apache.hadoop.net.StandardSocketFactory;
- /**
- * This class checks that RPCs can use specialized socket factories.
- */
- public class TestSocketFactory extends TestCase {
- /**
- * Check that we can reach a NameNode or a JobTracker using a specific
- * socket factory
- */
- public void testSocketFactory() throws IOException {
- // Create a standard mini-cluster
- Configuration sconf = new Configuration();
- MiniDFSCluster cluster = new MiniDFSCluster(sconf, 1, true, null);
- final int nameNodePort = cluster.getNameNodePort();
- // Get a reference to its DFS directly
- FileSystem fs = cluster.getFileSystem();
- assertTrue(fs instanceof DistributedFileSystem);
- DistributedFileSystem directDfs = (DistributedFileSystem) fs;
- // Get another reference via network using a specific socket factory
- Configuration cconf = new Configuration();
- FileSystem.setDefaultUri(cconf, String.format("hdfs://localhost:%s/",
- nameNodePort + 10));
- cconf.set("hadoop.rpc.socket.factory.class.default",
- "org.apache.hadoop.ipc.DummySocketFactory");
- cconf.set("hadoop.rpc.socket.factory.class.ClientProtocol",
- "org.apache.hadoop.ipc.DummySocketFactory");
- cconf.set("hadoop.rpc.socket.factory.class.JobSubmissionProtocol",
- "org.apache.hadoop.ipc.DummySocketFactory");
- fs = FileSystem.get(cconf);
- assertTrue(fs instanceof DistributedFileSystem);
- DistributedFileSystem dfs = (DistributedFileSystem) fs;
- JobClient client = null;
- MiniMRCluster mr = null;
- try {
- // This will test RPC to the NameNode only.
- // could we test Client-DataNode connections?
- Path filePath = new Path("/dir");
- assertFalse(directDfs.exists(filePath));
- assertFalse(dfs.exists(filePath));
- directDfs.mkdirs(filePath);
- assertTrue(directDfs.exists(filePath));
- assertTrue(dfs.exists(filePath));
- // This will test TPC to a JobTracker
- fs = FileSystem.get(sconf);
- mr = new MiniMRCluster(1, fs.getUri().toString(), 1);
- final int jobTrackerPort = mr.getJobTrackerPort();
- JobConf jconf = new JobConf(cconf);
- jconf.set("mapred.job.tracker", String.format("localhost:%d",
- jobTrackerPort + 10));
- client = new JobClient(jconf);
- JobStatus[] jobs = client.jobsToComplete();
- assertTrue(jobs.length == 0);
- } finally {
- try {
- if (client != null)
- client.close();
- } catch (Exception ignored) {
- // nothing we can do
- ignored.printStackTrace();
- }
- try {
- if (dfs != null)
- dfs.close();
- } catch (Exception ignored) {
- // nothing we can do
- ignored.printStackTrace();
- }
- try {
- if (directDfs != null)
- directDfs.close();
- } catch (Exception ignored) {
- // nothing we can do
- ignored.printStackTrace();
- }
- try {
- if (cluster != null)
- cluster.shutdown();
- } catch (Exception ignored) {
- // nothing we can do
- ignored.printStackTrace();
- }
- if (mr != null) {
- try {
- mr.shutdown();
- } catch (Exception ignored) {
- ignored.printStackTrace();
- }
- }
- }
- }
- }
- /**
- * Dummy socket factory which shift TPC ports by subtracting 10 when
- * establishing a connection
- */
- class DummySocketFactory extends StandardSocketFactory {
- /**
- * Default empty constructor (for use with the reflection API).
- */
- public DummySocketFactory() {
- }
- /* @inheritDoc */
- @Override
- public Socket createSocket() throws IOException {
- return new Socket() {
- @Override
- public void connect(SocketAddress addr, int timeout)
- throws IOException {
- assert (addr instanceof InetSocketAddress);
- InetSocketAddress iaddr = (InetSocketAddress) addr;
- SocketAddress newAddr = null;
- if (iaddr.isUnresolved())
- newAddr =
- new InetSocketAddress(iaddr.getHostName(),
- iaddr.getPort() - 10);
- else
- newAddr =
- new InetSocketAddress(iaddr.getAddress(), iaddr.getPort() - 10);
- System.out.printf("Test socket: rerouting %s to %sn", iaddr,
- newAddr);
- super.connect(newAddr, timeout);
- }
- };
- }
- /* @inheritDoc */
- @Override
- public boolean equals(Object obj) {
- if (this == obj)
- return true;
- if (obj == null)
- return false;
- if (!(obj instanceof DummySocketFactory))
- return false;
- return true;
- }
- /* @inheritDoc */
- @Override
- public int hashCode() {
- // Dummy hash code (to make find bugs happy)
- return 53;
- }
- }