org.apache.hama.HamaClusterTestCase.java Source code

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Here is the source code for org.apache.hama.HamaClusterTestCase.java

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/**
 * 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.hama;

import java.io.File;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hdfs.MiniDFSCluster;

public abstract class HamaClusterTestCase extends HamaTestCase {
    public static final Log LOG = LogFactory.getLog(HamaClusterTestCase.class);
    protected MiniDFSCluster dfsCluster;
    protected MiniBSPCluster bspCluster;
    protected MiniZooKeeperCluster zooKeeperCluster;
    protected boolean startDfs;
    protected int numOfGroom = 1;

    /** default constructor */
    public HamaClusterTestCase() {
        this(false);
    }

    public HamaClusterTestCase(boolean startDfs) {
        super();
        this.startDfs = startDfs;
    }

    /**
     * Actually start the MiniBSP instance.
     */
    protected void hamaClusterSetup() throws Exception {
        File testDir = new File(getUnitTestdir(getName()).toString());

        // Note that this is done before we create the MiniHamaCluster because we
        // need to edit the config to add the ZooKeeper servers.
        this.zooKeeperCluster = new MiniZooKeeperCluster();
        int clientPort = this.zooKeeperCluster.startup(testDir);
        conf.set("hama.zookeeper.property.clientPort", Integer.toString(clientPort));
        conf.set(Constants.GROOM_RPC_HOST, "localhost");
        assertEquals(conf.get(Constants.GROOM_RPC_HOST), "localhost");
        bspCluster = new MiniBSPCluster(this.conf, numOfGroom);
        bspCluster.startBSPCluster();
    }

    @Override
    protected void setUp() throws Exception {
        try {
            if (this.startDfs) {
                // This spews a bunch of warnings about missing scheme. TODO: fix.
                this.dfsCluster = new MiniDFSCluster(0, this.conf, 2, true, true, true, null, null, null, null);

                // mangle the conf so that the fs parameter points to the minidfs we
                // just started up
                FileSystem filesystem = dfsCluster.getFileSystem();
                conf.set("fs.defaultFS", filesystem.getUri().toString());
                Path parentdir = filesystem.getHomeDirectory();

                filesystem.mkdirs(parentdir);
            }

            // do the super setup now. if we had done it first, then we would have
            // gotten our conf all mangled and a local fs started up.
            super.setUp();

            // start the instance
            hamaClusterSetup();
        } catch (Exception e) {
            if (zooKeeperCluster != null) {
                zooKeeperCluster.shutdown();
            }
            if (dfsCluster != null) {
                shutdownDfs(dfsCluster);
            }
            throw e;
        }
    }

    @Override
    protected void tearDown() throws Exception {
        super.tearDown();
        try {
            if (startDfs) {
                shutdownDfs(dfsCluster);
            }
            bspCluster.shutdown();
            zooKeeperCluster.shutdown();
        } catch (Exception e) {
            LOG.error(e);
        }
    }
}