| /* |
| * 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.fs.contract.router; |
| |
| import static org.apache.hadoop.hdfs.server.federation.FederationTestUtils.NAMENODES; |
| |
| import java.io.IOException; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.contract.AbstractFSContractTestBase; |
| import org.apache.hadoop.fs.contract.hdfs.HDFSContract; |
| import org.apache.hadoop.hdfs.MiniDFSCluster; |
| import org.apache.hadoop.hdfs.server.federation.MiniRouterDFSCluster; |
| import org.junit.Assert; |
| |
| /** |
| * The contract of Router-based Federated HDFS. |
| */ |
| public class RouterHDFSContract extends HDFSContract { |
| |
| public static final int BLOCK_SIZE = |
| AbstractFSContractTestBase.TEST_FILE_LEN; |
| private static MiniRouterDFSCluster cluster; |
| |
| public RouterHDFSContract(Configuration conf) { |
| super(conf); |
| } |
| |
| public static void createCluster() throws IOException { |
| createCluster(null); |
| } |
| |
| public static void createCluster(Configuration conf) throws IOException { |
| try { |
| cluster = new MiniRouterDFSCluster(true, 2, conf); |
| |
| // Start NNs and DNs and wait until ready |
| cluster.startCluster(conf); |
| |
| cluster.addRouterOverrides(conf); |
| // Start routers with only an RPC service |
| cluster.startRouters(); |
| |
| // Register and verify all NNs with all routers |
| cluster.registerNamenodes(); |
| cluster.waitNamenodeRegistration(); |
| |
| // Setup the mount table |
| cluster.installMockLocations(); |
| |
| // Making one Namenodes active per nameservice |
| if (cluster.isHighAvailability()) { |
| for (String ns : cluster.getNameservices()) { |
| cluster.switchToActive(ns, NAMENODES[0]); |
| cluster.switchToStandby(ns, NAMENODES[1]); |
| } |
| } |
| |
| cluster.waitActiveNamespaces(); |
| } catch (Exception e) { |
| destroyCluster(); |
| throw new IOException("Cannot start federated cluster", e); |
| } |
| } |
| |
| public static void destroyCluster() throws IOException { |
| if (cluster != null) { |
| cluster.shutdown(); |
| cluster = null; |
| } |
| } |
| |
| public static MiniDFSCluster getCluster() { |
| return cluster.getCluster(); |
| } |
| |
| public static FileSystem getFileSystem() throws IOException { |
| //assumes cluster is not null |
| Assert.assertNotNull("cluster not created", cluster); |
| return cluster.getRandomRouter().getFileSystem(); |
| } |
| |
| @Override |
| public FileSystem getTestFileSystem() throws IOException { |
| return getFileSystem(); |
| } |
| } |