| /** |
| * 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 org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.hdfs.DistributedFileSystem; |
| import org.apache.hadoop.hdfs.MiniDFSCluster; |
| import org.apache.hadoop.mapred.JobClient; |
| import org.apache.hadoop.mapred.JobConf; |
| import org.apache.hadoop.mapred.JobStatus; |
| import org.apache.hadoop.mapreduce.MRConfig; |
| import org.apache.hadoop.mapreduce.v2.MiniMRYarnCluster; |
| import org.apache.hadoop.net.StandardSocketFactory; |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| /** |
| * This class checks that RPCs can use specialized socket factories. |
| */ |
| public class TestMRCJCSocketFactory { |
| |
| /** |
| * Check that we can reach a NameNode or Resource Manager using a specific |
| * socket factory |
| */ |
| @Test |
| public void testSocketFactory() throws IOException { |
| // Create a standard mini-cluster |
| Configuration sconf = new Configuration(); |
| MiniDFSCluster cluster = new MiniDFSCluster.Builder(sconf).numDataNodes(1) |
| .build(); |
| final int nameNodePort = cluster.getNameNodePort(); |
| |
| // Get a reference to its DFS directly |
| FileSystem fs = cluster.getFileSystem(); |
| Assert.assertTrue(fs instanceof DistributedFileSystem); |
| DistributedFileSystem directDfs = (DistributedFileSystem) fs; |
| |
| Configuration cconf = getCustomSocketConfigs(nameNodePort); |
| |
| fs = FileSystem.get(cconf); |
| Assert.assertTrue(fs instanceof DistributedFileSystem); |
| DistributedFileSystem dfs = (DistributedFileSystem) fs; |
| |
| JobClient client = null; |
| MiniMRYarnCluster miniMRYarnCluster = null; |
| try { |
| // This will test RPC to the NameNode only. |
| // could we test Client-DataNode connections? |
| Path filePath = new Path("/dir"); |
| |
| Assert.assertFalse(directDfs.exists(filePath)); |
| Assert.assertFalse(dfs.exists(filePath)); |
| |
| directDfs.mkdirs(filePath); |
| Assert.assertTrue(directDfs.exists(filePath)); |
| Assert.assertTrue(dfs.exists(filePath)); |
| |
| // This will test RPC to a Resource Manager |
| fs = FileSystem.get(sconf); |
| JobConf jobConf = new JobConf(); |
| FileSystem.setDefaultUri(jobConf, fs.getUri().toString()); |
| miniMRYarnCluster = initAndStartMiniMRYarnCluster(jobConf); |
| JobConf jconf = new JobConf(miniMRYarnCluster.getConfig()); |
| jconf.set("hadoop.rpc.socket.factory.class.default", |
| "org.apache.hadoop.ipc.DummySocketFactory"); |
| jconf.set(MRConfig.FRAMEWORK_NAME, MRConfig.YARN_FRAMEWORK_NAME); |
| String rmAddress = jconf.get("yarn.resourcemanager.address"); |
| String[] split = rmAddress.split(":"); |
| jconf.set("yarn.resourcemanager.address", split[0] + ':' |
| + (Integer.parseInt(split[1]) + 10)); |
| client = new JobClient(jconf); |
| |
| JobStatus[] jobs = client.jobsToComplete(); |
| Assert.assertTrue(jobs.length == 0); |
| |
| } finally { |
| closeClient(client); |
| closeDfs(dfs); |
| closeDfs(directDfs); |
| stopMiniMRYarnCluster(miniMRYarnCluster); |
| shutdownDFSCluster(cluster); |
| } |
| } |
| |
| private MiniMRYarnCluster initAndStartMiniMRYarnCluster(JobConf jobConf) { |
| MiniMRYarnCluster miniMRYarnCluster; |
| miniMRYarnCluster = new MiniMRYarnCluster(this.getClass().getName(), 1); |
| miniMRYarnCluster.init(jobConf); |
| miniMRYarnCluster.start(); |
| return miniMRYarnCluster; |
| } |
| |
| private Configuration getCustomSocketConfigs(final int nameNodePort) { |
| // 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"); |
| return cconf; |
| } |
| |
| private void shutdownDFSCluster(MiniDFSCluster cluster) { |
| try { |
| if (cluster != null) |
| cluster.shutdown(); |
| |
| } catch (Exception ignored) { |
| // nothing we can do |
| ignored.printStackTrace(); |
| } |
| } |
| |
| private void stopMiniMRYarnCluster(MiniMRYarnCluster miniMRYarnCluster) { |
| try { |
| if (miniMRYarnCluster != null) |
| miniMRYarnCluster.stop(); |
| |
| } catch (Exception ignored) { |
| // nothing we can do |
| ignored.printStackTrace(); |
| } |
| } |
| |
| private void closeDfs(DistributedFileSystem dfs) { |
| try { |
| if (dfs != null) |
| dfs.close(); |
| |
| } catch (Exception ignored) { |
| // nothing we can do |
| ignored.printStackTrace(); |
| } |
| } |
| |
| private void closeClient(JobClient client) { |
| try { |
| if (client != null) |
| client.close(); |
| } catch (Exception ignored) { |
| // nothing we can do |
| 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() { |
| } |
| |
| @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); |
| } |
| }; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) |
| return true; |
| if (obj == null) |
| return false; |
| if (!(obj instanceof DummySocketFactory)) |
| return false; |
| return true; |
| } |
| } |