com.cloudera.cdk.morphline.hadoop.core.MiniDFSTest.java Source code

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/*
 * Copyright 2013 Cloudera.
 *
 * Licensed 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 com.cloudera.cdk.morphline.hadoop.core;

import java.io.IOException;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.junit.AfterClass;
import org.junit.BeforeClass;

/**
 * Provides setup/teardown of a MiniDFSCluster for tests that need one.
 */
public class MiniDFSTest {
    private static MiniDFSCluster cluster = null;
    private static FileSystem dfs = null;
    private static FileSystem lfs = null;

    protected static FileSystem getDFS() {
        return dfs;
    }

    protected static FileSystem getFS() {
        return lfs;
    }

    @BeforeClass
    public static void setupFS() throws IOException {
        final Configuration conf = new Configuration();
        cluster = new MiniDFSCluster.Builder(conf).build();
        dfs = cluster.getFileSystem();
        lfs = FileSystem.getLocal(conf);
    }

    @AfterClass
    public static void teardownFS() throws IOException {
        dfs = null;
        lfs = null;
        if (cluster != null) {
            cluster.shutdown();
            cluster = null;
        }
    }
}