| /** |
| * 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 %s\n", 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; |
| } |
| } |