com.streamsets.datacollector.hdfs.standalone.HdfsDestinationPipelineRunIT.java Source code

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Here is the source code for com.streamsets.datacollector.hdfs.standalone.HdfsDestinationPipelineRunIT.java

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/**
 * Copyright 2015 StreamSets Inc.
 *
 * Licensed under 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 com.streamsets.datacollector.hdfs.standalone;

import com.google.common.io.Resources;
import com.streamsets.datacollector.base.PipelineRunStandaloneIT;

import com.streamsets.datacollector.util.TestUtil;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hdfs.DistributedFileSystem;
import org.apache.hadoop.hdfs.HdfsConfiguration;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.hadoop.hdfs.server.namenode.EditLogFileOutputStream;
import org.apache.hadoop.security.UserGroupInformation;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;

import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URI;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Paths;

public class HdfsDestinationPipelineRunIT extends PipelineRunStandaloneIT {

    private static MiniDFSCluster miniDFS;

    @Before
    @Override
    public void setUp() throws Exception {
        super.setUp();
        // setting some dummy kerberos settings to be able to test a mis-setting
        System.setProperty("java.security.krb5.realm", "foo");
        System.setProperty("java.security.krb5.kdc", "localhost:0");

        File minidfsDir = new File("target/minidfs").getAbsoluteFile();
        if (!minidfsDir.exists()) {
            Assert.assertTrue(minidfsDir.mkdirs());
        }
        System.setProperty(MiniDFSCluster.PROP_TEST_BUILD_DATA, minidfsDir.getPath());
        Configuration conf = new HdfsConfiguration();
        conf.set("hadoop.proxyuser." + System.getProperty("user.name") + ".hosts", "*");
        conf.set("hadoop.proxyuser." + System.getProperty("user.name") + ".groups", "*");
        UserGroupInformation.createUserForTesting("foo", new String[] { "all", "supergroup" });
        EditLogFileOutputStream.setShouldSkipFsyncForTesting(true);
        miniDFS = new MiniDFSCluster.Builder(conf).build();
    }

    @After
    @Override
    public void tearDown() {
        if (miniDFS != null) {
            miniDFS.shutdown();
            miniDFS = null;
        }
    }

    @Override
    protected String getPipelineJson() throws Exception {
        URI uri = Resources.getResource("hdfs_destination_pipeline_run.json").toURI();
        String pipelineJson = new String(Files.readAllBytes(Paths.get(uri)), StandardCharsets.UTF_8);
        pipelineJson = pipelineJson.replaceAll("/uri", miniDFS.getURI().toString());
        return pipelineJson;
    }

    @Override
    protected int getRecordsInOrigin() {
        return 500;
    }

    @Override
    protected int getRecordsInTarget() throws IOException {
        int recordsRead = 0;
        DistributedFileSystem fileSystem = miniDFS.getFileSystem();
        FileStatus[] fileStatuses = fileSystem.listStatus(new Path("/tmp/out/" + TestUtil.getCurrentYear()));
        for (FileStatus f : fileStatuses) {
            BufferedReader br = new BufferedReader(new InputStreamReader(fileSystem.open(f.getPath())));
            String line = br.readLine();
            while (line != null) {
                recordsRead++;
                line = br.readLine();
            }
        }
        return recordsRead;
    }

    @Override
    protected String getPipelineName() {
        return "hdfs_destination_pipeline";
    }

    @Override
    protected String getPipelineRev() {
        return "0";
    }
}