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.falcon.regression; import org.apache.commons.lang.StringUtils; import org.apache.falcon.entity.v0.EntityType; import org.apache.falcon.entity.v0.cluster.Interfacetype; import org.apache.falcon.entity.v0.feed.ActionType; import org.apache.falcon.entity.v0.feed.ClusterType; import org.apache.falcon.regression.Entities.FeedMerlin; import org.apache.falcon.regression.core.bundle.Bundle; import org.apache.falcon.regression.core.enumsAndConstants.MerlinConstants; import org.apache.falcon.regression.core.helpers.ColoHelper; import org.apache.falcon.regression.core.util.AssertUtil; import org.apache.falcon.regression.core.util.BundleUtil; import org.apache.falcon.regression.core.util.HadoopUtil; import org.apache.falcon.regression.core.util.InstanceUtil; import org.apache.falcon.regression.core.util.MatrixUtil; import org.apache.falcon.regression.core.util.OSUtil; import org.apache.falcon.regression.core.util.OozieUtil; import org.apache.falcon.regression.core.util.TimeUtil; import org.apache.falcon.regression.core.util.Util; import org.apache.falcon.regression.testHelper.BaseTestClass; import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.fs.ContentSummary; import org.apache.hadoop.fs.FileSystem; import org.apache.hadoop.fs.Path; import org.apache.log4j.Logger; import org.apache.oozie.client.CoordinatorAction; import org.apache.oozie.client.OozieClient; import org.joda.time.DateTime; import org.joda.time.DateTimeZone; import org.joda.time.format.DateTimeFormat; import org.joda.time.format.DateTimeFormatter; import org.testng.Assert; import org.testng.annotations.AfterClass; import org.testng.annotations.AfterMethod; import org.testng.annotations.BeforeClass; import org.testng.annotations.BeforeMethod; import org.testng.annotations.DataProvider; import org.testng.annotations.Test; import javax.xml.bind.JAXBException; import java.io.IOException; import java.util.List; import java.util.UUID; /** * Tests for operations with external file systems. */ @Test(groups = "embedded") public class ExternalFSTest extends BaseTestClass { public static final String WASB_END_POINT = "wasb://" + MerlinConstants.WASB_CONTAINER + "@" + MerlinConstants.WASB_ACCOUNT; private ColoHelper cluster = servers.get(0); private FileSystem clusterFS = serverFS.get(0); private OozieClient clusterOC = serverOC.get(0); private FileSystem wasbFS; private Bundle externalBundle; private String baseTestDir = cleanAndGetTestDir(); private String sourcePath = baseTestDir + "/source"; private String baseWasbDir = "/falcon-regression/" + UUID.randomUUID().toString().split("-")[0]; private String testWasbTargetDir = baseWasbDir + '/' + UUID.randomUUID().toString().split("-")[0] + '/'; private static final Logger LOGGER = Logger.getLogger(ExternalFSTest.class); @BeforeClass public void setUpClass() throws IOException { HadoopUtil.recreateDir(clusterFS, baseTestDir); Configuration conf = new Configuration(); conf.set("fs.defaultFS", WASB_END_POINT); conf.set("fs.azure.account.key." + MerlinConstants.WASB_ACCOUNT, MerlinConstants.WASB_SECRET); conf.setBoolean("fs.hdfs.impl.disable.cache", false); wasbFS = FileSystem.get(conf); LOGGER.info("creating base wasb dir" + baseWasbDir); } @BeforeMethod(alwaysRun = true) public void setUp() throws JAXBException, IOException { Bundle bundle = BundleUtil.readFeedReplicationBundle(); bundles[0] = new Bundle(bundle, cluster); externalBundle = new Bundle(bundle, cluster); bundles[0].generateUniqueBundle(this); externalBundle.generateUniqueBundle(this); LOGGER.info("checking wasb credentials with location: " + testWasbTargetDir); wasbFS.create(new Path(testWasbTargetDir)); wasbFS.delete(new Path(testWasbTargetDir), true); } @AfterMethod public void tearDown() throws IOException { removeTestClassEntities(); wasbFS.delete(new Path(testWasbTargetDir), true); } @AfterClass(alwaysRun = true) public void tearDownClass() throws IOException { wasbFS.delete(new Path(baseWasbDir), true); } @Test(dataProvider = "getInvalidTargets") public void invalidCredentialsExtFS(String endpoint) throws Exception { bundles[0].setClusterInterface(Interfacetype.READONLY, endpoint); bundles[0].setClusterInterface(Interfacetype.WRITE, endpoint); AssertUtil.assertFailed(prism.getClusterHelper().submitEntity(bundles[0].getClusterElement().toString())); } @Test(dataProvider = "getData") public void replicateToExternalFS(final FileSystem externalFS, final String separator, final boolean withData) throws Exception { final String endpoint = externalFS.getUri().toString(); Bundle.submitCluster(bundles[0], externalBundle); String startTime = TimeUtil.getTimeWrtSystemTime(0); String endTime = TimeUtil.addMinsToTime(startTime, 5); LOGGER.info("Time range between : " + startTime + " and " + endTime); String datePattern = StringUtils .join(new String[] { "${YEAR}", "${MONTH}", "${DAY}", "${HOUR}", "${MINUTE}" }, separator); //configure feed FeedMerlin feed = new FeedMerlin(bundles[0].getDataSets().get(0)); String targetDataLocation = endpoint + testWasbTargetDir + datePattern; feed.setFilePath(sourcePath + '/' + datePattern); //erase all clusters from feed definition feed.clearFeedClusters(); //set local cluster as source feed.addFeedCluster(new FeedMerlin.FeedClusterBuilder(Util.readEntityName(bundles[0].getClusters().get(0))) .withRetention("days(1000000)", ActionType.DELETE).withValidity(startTime, endTime) .withClusterType(ClusterType.SOURCE).build()); //set externalFS cluster as target feed.addFeedCluster( new FeedMerlin.FeedClusterBuilder(Util.readEntityName(externalBundle.getClusters().get(0))) .withRetention("days(1000000)", ActionType.DELETE).withValidity(startTime, endTime) .withClusterType(ClusterType.TARGET).withDataLocation(targetDataLocation).build()); //submit and schedule feed LOGGER.info("Feed : " + Util.prettyPrintXml(feed.toString())); AssertUtil.assertSucceeded(prism.getFeedHelper().submitAndSchedule(feed.toString())); datePattern = StringUtils.join(new String[] { "yyyy", "MM", "dd", "HH", "mm" }, separator); //upload necessary data DateTime date = new DateTime(startTime, DateTimeZone.UTC); DateTimeFormatter fmt = DateTimeFormat.forPattern(datePattern); String timePattern = fmt.print(date); HadoopUtil.recreateDir(clusterFS, sourcePath + '/' + timePattern); if (withData) { HadoopUtil.copyDataToFolder(clusterFS, sourcePath + '/' + timePattern, OSUtil.SINGLE_FILE); } Path srcPath = new Path(sourcePath + '/' + timePattern); Path dstPath = new Path(endpoint + testWasbTargetDir + '/' + timePattern); //check if coordinator exists TimeUtil.sleepSeconds(10); InstanceUtil.waitTillInstancesAreCreated(clusterOC, feed.toString(), 0); Assert.assertEquals(OozieUtil.checkIfFeedCoordExist(clusterOC, feed.getName(), "REPLICATION"), 1); //replication should start, wait while it ends InstanceUtil.waitTillInstanceReachState(clusterOC, Util.readEntityName(feed.toString()), 1, CoordinatorAction.Status.SUCCEEDED, EntityType.FEED); //check if data has been replicated correctly List<Path> cluster1ReplicatedData = HadoopUtil.getAllFilesRecursivelyHDFS(clusterFS, srcPath); List<Path> cluster2ReplicatedData = HadoopUtil.getAllFilesRecursivelyHDFS(externalFS, dstPath); AssertUtil.checkForListSizes(cluster1ReplicatedData, cluster2ReplicatedData); final ContentSummary srcSummary = clusterFS.getContentSummary(srcPath); final ContentSummary dstSummary = externalFS.getContentSummary(dstPath); Assert.assertEquals(dstSummary.getLength(), srcSummary.getLength()); } @DataProvider public Object[][] getData() { //"-" for single directory, "/" - for dir with subdirs }; return MatrixUtil.crossProduct(new FileSystem[] { wasbFS }, new String[] { "/", "-" }, new Boolean[] { true, false }); } @DataProvider public Object[][] getInvalidTargets() { return new Object[][] { { "wasb://invalid@invalid.blob.core.windows.net/" } }; } }