Java tutorial
/* * 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.slider.common.tools; import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.fs.FileSystem; import org.apache.hadoop.fs.Path; import org.apache.hadoop.yarn.api.records.ApplicationReport; import org.apache.hadoop.yarn.api.records.YarnApplicationState; import org.apache.hadoop.yarn.api.records.impl.pb.ApplicationReportPBImpl; import org.apache.slider.tools.TestUtility; import org.junit.Assert; import org.junit.Rule; import org.junit.Test; import org.junit.rules.TemporaryFolder; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.io.InputStream; import java.util.ArrayList; import java.util.List; /** Test slider util methods. */ public class TestSliderUtils { protected static final Logger log = LoggerFactory.getLogger(TestSliderUtils.class); @Rule public TemporaryFolder folder = new TemporaryFolder(); @Test public void testGetMetaInfoStreamFromZip() throws Exception { String zipFileName = TestUtility.createAppPackage(folder, "testpkg", "test.zip", "target/test-classes/org/apache/slider/common/tools/test"); Configuration configuration = new Configuration(); FileSystem fs = FileSystem.getLocal(configuration); log.info("fs working dir is {}", fs.getWorkingDirectory().toString()); SliderFileSystem sliderFileSystem = new SliderFileSystem(fs, configuration); InputStream stream = SliderUtils.getApplicationResourceInputStream(sliderFileSystem.getFileSystem(), new Path(zipFileName), "metainfo.xml"); Assert.assertTrue(stream != null); Assert.assertTrue(stream.available() > 0); } @Test public void testTruncate() { Assert.assertEquals(SliderUtils.truncate(null, 5), null); Assert.assertEquals(SliderUtils.truncate("323", -1), "323"); Assert.assertEquals(SliderUtils.truncate("3232", 5), "3232"); Assert.assertEquals(SliderUtils.truncate("1234567890", 0), "1234567890"); Assert.assertEquals(SliderUtils.truncate("123456789012345", 15), "123456789012345"); Assert.assertEquals(SliderUtils.truncate("123456789012345", 14), "12345678901..."); Assert.assertEquals(SliderUtils.truncate("1234567890", 1), "1"); Assert.assertEquals(SliderUtils.truncate("1234567890", 10), "1234567890"); Assert.assertEquals(SliderUtils.truncate("", 10), ""); } @Test public void testApplicationReportComparison() { List<ApplicationReport> instances = getApplicationReports(); SliderUtils.sortApplicationsByMostRecent(instances); Assert.assertEquals(1000, instances.get(0).getStartTime()); Assert.assertEquals(1000, instances.get(1).getStartTime()); Assert.assertEquals(1000, instances.get(2).getStartTime()); Assert.assertEquals(1000, instances.get(3).getStartTime()); instances = getApplicationReports(); SliderUtils.sortApplicationReport(instances); Assert.assertEquals(1000, instances.get(0).getStartTime()); Assert.assertEquals(1000, instances.get(1).getStartTime()); Assert.assertEquals(1000, instances.get(2).getStartTime()); Assert.assertEquals(1000, instances.get(3).getStartTime()); Assert.assertTrue(instances.get(0).getYarnApplicationState() == YarnApplicationState.ACCEPTED || instances.get(0).getYarnApplicationState() == YarnApplicationState.RUNNING); Assert.assertTrue(instances.get(1).getYarnApplicationState() == YarnApplicationState.ACCEPTED || instances.get(1).getYarnApplicationState() == YarnApplicationState.RUNNING); Assert.assertTrue(instances.get(2).getYarnApplicationState() == YarnApplicationState.ACCEPTED || instances.get(2).getYarnApplicationState() == YarnApplicationState.RUNNING); Assert.assertTrue(instances.get(3).getYarnApplicationState() == YarnApplicationState.KILLED); } private List<ApplicationReport> getApplicationReports() { List<ApplicationReport> instances = new ArrayList<ApplicationReport>(); instances.add(getApplicationReport(1000, 0, "app1", YarnApplicationState.ACCEPTED)); instances.add(getApplicationReport(900, 998, "app1", YarnApplicationState.KILLED)); instances.add(getApplicationReport(900, 998, "app2", YarnApplicationState.FAILED)); instances.add(getApplicationReport(1000, 0, "app2", YarnApplicationState.RUNNING)); instances.add(getApplicationReport(800, 837, "app3", YarnApplicationState.FINISHED)); instances.add(getApplicationReport(1000, 0, "app3", YarnApplicationState.RUNNING)); instances.add(getApplicationReport(900, 998, "app3", YarnApplicationState.KILLED)); instances.add(getApplicationReport(800, 837, "app4", YarnApplicationState.FINISHED)); instances.add(getApplicationReport(1000, 1050, "app4", YarnApplicationState.KILLED)); instances.add(getApplicationReport(900, 998, "app4", YarnApplicationState.FINISHED)); Assert.assertEquals("app1", instances.get(0).getApplicationType()); Assert.assertEquals("app1", instances.get(1).getApplicationType()); Assert.assertEquals("app2", instances.get(2).getApplicationType()); Assert.assertEquals("app2", instances.get(3).getApplicationType()); return instances; } private ApplicationReportPBImpl getApplicationReport(long startTime, long finishTime, String name, YarnApplicationState state) { ApplicationReportPBImpl ar = new ApplicationReportPBImpl(); ar.setFinishTime(finishTime); ar.setStartTime(startTime); ar.setApplicationType(name); ar.setYarnApplicationState(state); return ar; } }