core/src/test/java/org/apache/oozie/action/hadoop/TestLauncher.java

/**
 * 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
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package org.apache.oozie.action.hadoop;

import org.apache.commons.io.FileUtils;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.oozie.test.XFsTestCase;
import org.apache.oozie.util.XConfiguration;
import org.apache.oozie.service.HadoopAccessorService;
import org.apache.oozie.service.Services;

import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.net.URI;
import java.nio.charset.StandardCharsets;

public class TestLauncher extends XFsTestCase {

    @Override
    protected void setUp() throws Exception {
        super.setUp();
        new Services().init();
    }

    @Override
    protected void tearDown() throws Exception {
        Services.get().destroy();
        super.tearDown();
    }

    // Test to ensure that the property value "oozie.action.prepare.xml" in the configuration of the job is an empty
    // string when there is no prepare block in workflow XML or there is one with no prepare actions in it
    public void testSetupLauncherInfoWithEmptyPrepareXML() throws Exception {
        Path actionDir = getFsTestCaseDir();

        // Setting up the job configuration
        Configuration appConf = Services.get().get(HadoopAccessorService.class).
                createConfiguration(new URI(getNameNodeUri()).getAuthority());
        appConf.set("user.name", getTestUser());
        appConf.set("fs.default.name", getNameNodeUri());

        Configuration actionConf = new XConfiguration();
        String prepareBlock = "";
        LauncherHelper.setupLauncherInfo(appConf, "1", "1@a", actionDir, "1@a-0", actionConf, prepareBlock);
        assertTrue(appConf.get("oozie.action.prepare.xml").equals(""));
    }

    // Test to ensure that the property value "oozie.action.prepare.xml" in the configuration of the job is properly set
    // when there is prepare block in workflow XML
    public void testSetupLauncherInfoWithNonEmptyPrepareXML() throws Exception {
        Path actionDir = getFsTestCaseDir();
        FileSystem fs = getFileSystem();
        Path newDir = new Path(actionDir, "newDir");

        // Setting up the job configuration
        Configuration appConf = Services.get().get(HadoopAccessorService.class).
                createConfiguration(new URI(getNameNodeUri()).getAuthority());
        appConf.set("user.name", getTestUser());
        appConf.set("fs.default.name", getNameNodeUri());

        Configuration actionConf = new XConfiguration();
        String prepareBlock = "<prepare>" + "<mkdir path='" + newDir + "'/>" + "</prepare>";
        LauncherHelper.setupLauncherInfo(appConf, "1", "1@a", actionDir, "1@a-0", actionConf, prepareBlock);
        assertTrue(appConf.get("oozie.action.prepare.xml").equals(prepareBlock));
    }

    public void testSetupMainClass() throws Exception {
        Configuration conf = new Configuration(false);
        LauncherHelper.setupMainClass(conf, "");
        assertNull(conf.get("oozie.launcher.action.main.class"));

        conf = new Configuration(false);
        LauncherHelper.setupMainClass(conf, "org.blah.myclass1");
        assertEquals(conf.get("oozie.launcher.action.main.class"), "org.blah.myclass1");

        conf = new Configuration(false);
        conf.set("oozie.launcher.action.main.class", "org.blah.myclass2");
        LauncherHelper.setupMainClass(conf, "");
        assertEquals(conf.get("oozie.launcher.action.main.class"), "org.blah.myclass2");

        // the passed argument (myclass1) should have priority
        conf = new Configuration(false);
        conf.set("oozie.launcher.action.main.class", "org.blah.myclass2");
        LauncherHelper.setupMainClass(conf, "org.blah.myclass1");
        assertEquals(conf.get("oozie.launcher.action.main.class"), "org.blah.myclass1");
    }

  // Test to ensure that the property value "oozie.action.prepare.xml" in the configuration of the job is properly set
  // when there is prepare block in workflow XML
  public void testSetupLauncherInfoHadoop2_0_2_alphaWorkaround() throws Exception {
    Path actionDir = getFsTestCaseDir();
    // Setting up the job configuration
      Configuration appConf = Services.get().get(HadoopAccessorService.class).
              createConfiguration(new URI(getNameNodeUri()).getAuthority());
    appConf.set("user.name", getTestUser());
    appConf.set("fs.default.name", getNameNodeUri());

    Configuration actionConf = new XConfiguration();
    actionConf.set("mapreduce.job.cache.files", "a.jar,aa.jar#aa.jar");
    LauncherHelper.setupLauncherInfo(appConf, "1", "1@a", actionDir, "1@a-0", actionConf, "");
    assertFalse(appConf.getBoolean("oozie.hadoop-2.0.2-alpha.workaround.for.distributed.cache", false));
    assertEquals("a.jar,aa.jar#aa.jar", actionConf.get("mapreduce.job.cache.files"));

    Services.get().getConf().setBoolean("oozie.hadoop-2.0.2-alpha.workaround.for.distributed.cache", true);
    actionConf = new XConfiguration();
    actionConf.set("mapreduce.job.cache.files", "a.jar,aa.jar#aa.jar");
    LauncherHelper.setupLauncherInfo(appConf, "1", "1@a", actionDir, "1@a-0", actionConf, "");
    assertTrue(appConf.getBoolean("oozie.hadoop-2.0.2-alpha.workaround.for.distributed.cache", false));
    assertEquals("aa.jar#aa.jar", actionConf.get("mapreduce.job.cache.files"));
  }

    public void testCopyFileMultiplex() throws Exception {
        String contents = "Hello World!\nThis is Oozie";
        File src = new File(getTestCaseDir(), "src.txt");
        Writer w = new OutputStreamWriter(new FileOutputStream(src), StandardCharsets.UTF_8);
        w.write(contents);
        w.close();

        File[] dsts = new File[]{new File(getTestCaseDir(), "dst1.txt"), new File(getTestCaseDir(),"dist2.txt"),
                new File(getTestCaseDir(), "dist3.txt")};
        for (File dst : dsts) {
            dst.delete();
            assertFalse(dst.exists());
        }
        LauncherMain.copyFileMultiplex(src, dsts);
        for (File dst : dsts) {
            assertTrue(dst.exists());
            assertEquals(contents, FileUtils.readFileToString(dst));
        }
    }

}