org.apache.accumulo.tserver.DirectoryDecommissionerTest.java Source code

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Here is the source code for org.apache.accumulo.tserver.DirectoryDecommissionerTest.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.accumulo.tserver;

import java.io.File;
import java.io.IOException;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FSDataOutputStream;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.junit.Assert;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TemporaryFolder;

/**
 * 
 */
public class DirectoryDecommissionerTest {

    @Rule
    public TemporaryFolder tempFolder = new TemporaryFolder(new File(System.getProperty("user.dir") + "/target"));

    @Test
    public void testSame() throws Exception {
        FileSystem fs = FileSystem.getLocal(new Configuration());

        Path subdir1 = new Path(tempFolder.newFolder().toURI());
        Path subdir2 = new Path(tempFolder.newFolder().toURI());
        Path subdir3 = new Path(tempFolder.newFolder().toURI());

        Assert.assertFalse(DirectoryDecommissioner.same(fs, subdir1, fs,
                new Path(tempFolder.getRoot().toURI().toString(), "8854339269459287524098238497")));
        Assert.assertFalse(DirectoryDecommissioner.same(fs,
                new Path(tempFolder.getRoot().toURI().toString(), "8854339269459287524098238497"), fs, subdir1));
        Assert.assertTrue(DirectoryDecommissioner.same(fs, subdir1, fs, subdir1));

        writeFile(fs, subdir1, "abc", "foo");
        writeFile(fs, subdir2, "abc", "bar");
        writeFile(fs, subdir3, "abc", "foo");

        Assert.assertTrue(DirectoryDecommissioner.same(fs, subdir1, fs, subdir1));
        Assert.assertFalse(DirectoryDecommissioner.same(fs, subdir1, fs, subdir2));
        Assert.assertFalse(DirectoryDecommissioner.same(fs, subdir2, fs, subdir1));
        Assert.assertTrue(DirectoryDecommissioner.same(fs, subdir1, fs, subdir3));
        Assert.assertTrue(DirectoryDecommissioner.same(fs, subdir3, fs, subdir1));

        writeFile(fs, subdir1, "def", "123456");
        writeFile(fs, subdir2, "def", "123456");
        writeFile(fs, subdir3, "def", "123456");

        Assert.assertTrue(DirectoryDecommissioner.same(fs, subdir1, fs, subdir1));
        Assert.assertFalse(DirectoryDecommissioner.same(fs, subdir1, fs, subdir2));
        Assert.assertFalse(DirectoryDecommissioner.same(fs, subdir2, fs, subdir1));
        Assert.assertTrue(DirectoryDecommissioner.same(fs, subdir1, fs, subdir3));
        Assert.assertTrue(DirectoryDecommissioner.same(fs, subdir3, fs, subdir1));

        writeFile(fs, subdir3, "ghi", "09876");

        Assert.assertFalse(DirectoryDecommissioner.same(fs, subdir1, fs, subdir3));
        Assert.assertFalse(DirectoryDecommissioner.same(fs, subdir3, fs, subdir1));

        fs.mkdirs(new Path(subdir2, "dir1"));

        try {
            DirectoryDecommissioner.same(fs, subdir1, fs, subdir2);
            Assert.fail();
        } catch (IllegalArgumentException e) {
        }

        try {
            DirectoryDecommissioner.same(fs, subdir2, fs, subdir1);
            Assert.fail();
        } catch (IllegalArgumentException e) {
        }

        try {
            DirectoryDecommissioner.same(fs, subdir1, fs, new Path(subdir2, "def"));
            Assert.fail();
        } catch (IllegalArgumentException e) {
        }

        try {
            DirectoryDecommissioner.same(fs, new Path(subdir2, "def"), fs, subdir3);
            Assert.fail();
        } catch (IllegalArgumentException e) {
        }

    }

    private void writeFile(FileSystem fs, Path dir, String filename, String data) throws IOException {
        FSDataOutputStream out = fs.create(new Path(dir, filename));
        try {
            out.writeUTF(data);
        } finally {
            out.close();
        }
    }
}