[120] | 1 | /** |
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| 2 | * Licensed to the Apache Software Foundation (ASF) under one |
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| 3 | * or more contributor license agreements. See the NOTICE file |
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| 4 | * distributed with this work for additional information |
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| 5 | * regarding copyright ownership. The ASF licenses this file |
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| 6 | * to you under the Apache License, Version 2.0 (the |
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| 7 | * "License"); you may not use this file except in compliance |
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| 8 | * with the License. You may obtain a copy of the License at |
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| 9 | * |
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| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 11 | * |
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| 12 | * Unless required by applicable law or agreed to in writing, software |
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| 13 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 15 | * See the License for the specific language governing permissions and |
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| 16 | * limitations under the License. |
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| 17 | */ |
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| 18 | package org.apache.hadoop.ipc; |
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| 19 | |
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| 20 | import java.io.IOException; |
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| 21 | import java.net.InetSocketAddress; |
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| 22 | import java.net.Socket; |
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| 23 | import java.net.SocketAddress; |
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| 24 | |
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| 25 | import junit.framework.TestCase; |
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| 26 | |
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| 27 | import org.apache.hadoop.conf.Configuration; |
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| 28 | import org.apache.hadoop.hdfs.DistributedFileSystem; |
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| 29 | import org.apache.hadoop.hdfs.MiniDFSCluster; |
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| 30 | import org.apache.hadoop.fs.FileSystem; |
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| 31 | import org.apache.hadoop.fs.Path; |
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| 32 | import org.apache.hadoop.mapred.JobClient; |
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| 33 | import org.apache.hadoop.mapred.JobConf; |
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| 34 | import org.apache.hadoop.mapred.JobStatus; |
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| 35 | import org.apache.hadoop.mapred.MiniMRCluster; |
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| 36 | import org.apache.hadoop.net.StandardSocketFactory; |
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| 37 | |
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| 38 | /** |
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| 39 | * This class checks that RPCs can use specialized socket factories. |
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| 40 | */ |
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| 41 | public class TestSocketFactory extends TestCase { |
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| 42 | |
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| 43 | /** |
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| 44 | * Check that we can reach a NameNode or a JobTracker using a specific |
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| 45 | * socket factory |
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| 46 | */ |
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| 47 | public void testSocketFactory() throws IOException { |
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| 48 | // Create a standard mini-cluster |
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| 49 | Configuration sconf = new Configuration(); |
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| 50 | MiniDFSCluster cluster = new MiniDFSCluster(sconf, 1, true, null); |
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| 51 | final int nameNodePort = cluster.getNameNodePort(); |
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| 52 | |
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| 53 | // Get a reference to its DFS directly |
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| 54 | FileSystem fs = cluster.getFileSystem(); |
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| 55 | assertTrue(fs instanceof DistributedFileSystem); |
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| 56 | DistributedFileSystem directDfs = (DistributedFileSystem) fs; |
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| 57 | |
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| 58 | // Get another reference via network using a specific socket factory |
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| 59 | Configuration cconf = new Configuration(); |
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| 60 | FileSystem.setDefaultUri(cconf, String.format("hdfs://localhost:%s/", |
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| 61 | nameNodePort + 10)); |
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| 62 | cconf.set("hadoop.rpc.socket.factory.class.default", |
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| 63 | "org.apache.hadoop.ipc.DummySocketFactory"); |
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| 64 | cconf.set("hadoop.rpc.socket.factory.class.ClientProtocol", |
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| 65 | "org.apache.hadoop.ipc.DummySocketFactory"); |
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| 66 | cconf.set("hadoop.rpc.socket.factory.class.JobSubmissionProtocol", |
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| 67 | "org.apache.hadoop.ipc.DummySocketFactory"); |
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| 68 | |
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| 69 | fs = FileSystem.get(cconf); |
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| 70 | assertTrue(fs instanceof DistributedFileSystem); |
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| 71 | DistributedFileSystem dfs = (DistributedFileSystem) fs; |
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| 72 | |
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| 73 | JobClient client = null; |
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| 74 | MiniMRCluster mr = null; |
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| 75 | try { |
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| 76 | // This will test RPC to the NameNode only. |
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| 77 | // could we test Client-DataNode connections? |
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| 78 | Path filePath = new Path("/dir"); |
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| 79 | |
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| 80 | assertFalse(directDfs.exists(filePath)); |
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| 81 | assertFalse(dfs.exists(filePath)); |
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| 82 | |
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| 83 | directDfs.mkdirs(filePath); |
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| 84 | assertTrue(directDfs.exists(filePath)); |
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| 85 | assertTrue(dfs.exists(filePath)); |
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| 86 | |
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| 87 | // This will test TPC to a JobTracker |
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| 88 | fs = FileSystem.get(sconf); |
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| 89 | mr = new MiniMRCluster(1, fs.getUri().toString(), 1); |
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| 90 | final int jobTrackerPort = mr.getJobTrackerPort(); |
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| 91 | |
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| 92 | JobConf jconf = new JobConf(cconf); |
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| 93 | jconf.set("mapred.job.tracker", String.format("localhost:%d", |
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| 94 | jobTrackerPort + 10)); |
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| 95 | client = new JobClient(jconf); |
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| 96 | |
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| 97 | JobStatus[] jobs = client.jobsToComplete(); |
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| 98 | assertTrue(jobs.length == 0); |
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| 99 | |
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| 100 | } finally { |
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| 101 | try { |
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| 102 | if (client != null) |
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| 103 | client.close(); |
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| 104 | } catch (Exception ignored) { |
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| 105 | // nothing we can do |
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| 106 | ignored.printStackTrace(); |
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| 107 | } |
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| 108 | try { |
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| 109 | if (dfs != null) |
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| 110 | dfs.close(); |
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| 111 | |
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| 112 | } catch (Exception ignored) { |
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| 113 | // nothing we can do |
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| 114 | ignored.printStackTrace(); |
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| 115 | } |
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| 116 | try { |
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| 117 | if (directDfs != null) |
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| 118 | directDfs.close(); |
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| 119 | |
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| 120 | } catch (Exception ignored) { |
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| 121 | // nothing we can do |
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| 122 | ignored.printStackTrace(); |
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| 123 | } |
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| 124 | try { |
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| 125 | if (cluster != null) |
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| 126 | cluster.shutdown(); |
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| 127 | |
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| 128 | } catch (Exception ignored) { |
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| 129 | // nothing we can do |
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| 130 | ignored.printStackTrace(); |
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| 131 | } |
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| 132 | if (mr != null) { |
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| 133 | try { |
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| 134 | mr.shutdown(); |
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| 135 | } catch (Exception ignored) { |
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| 136 | ignored.printStackTrace(); |
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| 137 | } |
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| 138 | } |
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| 139 | } |
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| 140 | } |
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| 141 | } |
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| 142 | |
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| 143 | /** |
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| 144 | * Dummy socket factory which shift TPC ports by subtracting 10 when |
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| 145 | * establishing a connection |
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| 146 | */ |
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| 147 | class DummySocketFactory extends StandardSocketFactory { |
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| 148 | /** |
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| 149 | * Default empty constructor (for use with the reflection API). |
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| 150 | */ |
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| 151 | public DummySocketFactory() { |
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| 152 | } |
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| 153 | |
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| 154 | /* @inheritDoc */ |
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| 155 | @Override |
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| 156 | public Socket createSocket() throws IOException { |
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| 157 | return new Socket() { |
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| 158 | @Override |
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| 159 | public void connect(SocketAddress addr, int timeout) |
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| 160 | throws IOException { |
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| 161 | |
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| 162 | assert (addr instanceof InetSocketAddress); |
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| 163 | InetSocketAddress iaddr = (InetSocketAddress) addr; |
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| 164 | SocketAddress newAddr = null; |
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| 165 | if (iaddr.isUnresolved()) |
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| 166 | newAddr = |
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| 167 | new InetSocketAddress(iaddr.getHostName(), |
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| 168 | iaddr.getPort() - 10); |
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| 169 | else |
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| 170 | newAddr = |
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| 171 | new InetSocketAddress(iaddr.getAddress(), iaddr.getPort() - 10); |
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| 172 | System.out.printf("Test socket: rerouting %s to %s\n", iaddr, |
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| 173 | newAddr); |
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| 174 | super.connect(newAddr, timeout); |
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| 175 | } |
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| 176 | }; |
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| 177 | } |
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| 178 | |
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| 179 | /* @inheritDoc */ |
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| 180 | @Override |
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| 181 | public boolean equals(Object obj) { |
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| 182 | if (this == obj) |
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| 183 | return true; |
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| 184 | if (obj == null) |
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| 185 | return false; |
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| 186 | if (!(obj instanceof DummySocketFactory)) |
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| 187 | return false; |
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| 188 | return true; |
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| 189 | } |
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| 190 | |
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| 191 | /* @inheritDoc */ |
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| 192 | @Override |
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| 193 | public int hashCode() { |
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| 194 | // Dummy hash code (to make find bugs happy) |
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| 195 | return 53; |
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| 196 | } |
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| 197 | } |
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