| /** |
| * 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.falcon.cluster.util; |
| |
| import org.apache.falcon.entity.v0.cluster.Cluster; |
| import org.apache.falcon.entity.v0.cluster.Interface; |
| import org.apache.falcon.entity.v0.cluster.Interfaces; |
| import org.apache.falcon.entity.v0.cluster.Interfacetype; |
| import org.apache.falcon.entity.v0.cluster.Location; |
| import org.apache.falcon.entity.v0.cluster.Locations; |
| import org.apache.falcon.hadoop.JailedFileSystem; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.security.UserGroupInformation; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.IOException; |
| import java.security.PrivilegedExceptionAction; |
| |
| /** |
| * A utility class that doles out an embedded Hadoop cluster with DFS and/or MR. |
| */ |
| public class EmbeddedCluster { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(EmbeddedCluster.class); |
| |
| protected EmbeddedCluster() { |
| } |
| |
| protected Configuration conf = newConfiguration(); |
| protected Cluster clusterEntity; |
| |
| public Configuration getConf() { |
| return conf; |
| } |
| |
| public static Configuration newConfiguration() { |
| Configuration configuration = new Configuration(); |
| configuration.set("fs.jail.impl", JailedFileSystem.class.getName()); |
| return configuration; |
| } |
| |
| public static EmbeddedCluster newCluster(final String name) throws Exception { |
| return createClusterAsUser(name, false); |
| } |
| |
| public static EmbeddedCluster newCluster(final String name, boolean global) throws Exception { |
| return createClusterAsUser(name, global); |
| } |
| |
| public static EmbeddedCluster newCluster(final String name, |
| final String user) throws Exception { |
| UserGroupInformation hdfsUser = UserGroupInformation.createRemoteUser(user); |
| return hdfsUser.doAs(new PrivilegedExceptionAction<EmbeddedCluster>() { |
| @Override |
| public EmbeddedCluster run() throws Exception { |
| return createClusterAsUser(name, false); |
| } |
| }); |
| } |
| |
| private static EmbeddedCluster createClusterAsUser(String name, boolean global) throws IOException { |
| EmbeddedCluster cluster = new EmbeddedCluster(); |
| cluster.conf.set("fs.default.name", "jail://" + (global ? "global" : name) + ":00"); |
| |
| String hdfsUrl = cluster.conf.get("fs.default.name"); |
| LOG.info("Cluster Namenode = {}", hdfsUrl); |
| cluster.buildClusterObject(name); |
| return cluster; |
| } |
| |
| public FileSystem getFileSystem() throws IOException { |
| return FileSystem.get(conf); |
| } |
| |
| protected void buildClusterObject(String name) { |
| clusterEntity = new Cluster(); |
| clusterEntity.setName(name); |
| clusterEntity.setColo("local"); |
| clusterEntity.setDescription("Embedded cluster: " + name); |
| |
| Interfaces interfaces = new Interfaces(); |
| interfaces.getInterfaces().add(newInterface(Interfacetype.WORKFLOW, |
| "http://localhost:41000/oozie", "0.1")); |
| String fsUrl = conf.get("fs.default.name"); |
| interfaces.getInterfaces().add(newInterface(Interfacetype.READONLY, fsUrl, "0.1")); |
| interfaces.getInterfaces().add(newInterface(Interfacetype.WRITE, fsUrl, "0.1")); |
| interfaces.getInterfaces().add(newInterface(Interfacetype.EXECUTE, |
| "localhost:41021", "0.1")); |
| interfaces.getInterfaces().add( |
| newInterface(Interfacetype.REGISTRY, "thrift://localhost:49083", "0.1")); |
| interfaces.getInterfaces().add( |
| newInterface(Interfacetype.MESSAGING, "vm://localhost", "0.1")); |
| clusterEntity.setInterfaces(interfaces); |
| |
| Location location = new Location(); |
| location.setName("staging"); |
| location.setPath("/projects/falcon/staging"); |
| Locations locs = new Locations(); |
| locs.getLocations().add(location); |
| location = new Location(); |
| location.setName("working"); |
| location.setPath("/project/falcon/working"); |
| locs.getLocations().add(location); |
| clusterEntity.setLocations(locs); |
| } |
| |
| private Interface newInterface(Interfacetype type, |
| String endPoint, String version) { |
| Interface iface = new Interface(); |
| iface.setType(type); |
| iface.setEndpoint(endPoint); |
| iface.setVersion(version); |
| return iface; |
| } |
| |
| public void shutdown() { |
| } |
| |
| public Cluster getCluster() { |
| return clusterEntity; |
| } |
| } |