| /** |
| * 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.hive.spark.client; |
| |
| import com.google.common.collect.Lists; |
| |
| import java.io.File; |
| import java.net.URL; |
| import java.net.URLClassLoader; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| import org.apache.commons.lang.StringUtils; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.Path; |
| |
| public class SparkClientUtilities { |
| protected static final transient Logger LOG = LoggerFactory.getLogger(SparkClientUtilities.class); |
| |
| private static final Map<String, Long> downloadedFiles = new ConcurrentHashMap<>(); |
| |
| /** |
| * Add new elements to the classpath. |
| * |
| * @param newPaths Map of classpath elements and corresponding timestamp |
| * @return locally accessible files corresponding to the newPaths |
| */ |
| public static List<String> addToClassPath(Map<String, Long> newPaths, Configuration conf, |
| File localTmpDir) throws Exception { |
| URLClassLoader loader = (URLClassLoader) Thread.currentThread().getContextClassLoader(); |
| List<URL> curPath = Lists.newArrayList(loader.getURLs()); |
| List<String> localNewPaths = new ArrayList<>(); |
| |
| boolean newPathAdded = false; |
| for (Map.Entry<String, Long> entry : newPaths.entrySet()) { |
| URL newUrl = urlFromPathString(entry.getKey(), entry.getValue(), conf, localTmpDir); |
| localNewPaths.add(newUrl.toString()); |
| if (newUrl != null && !curPath.contains(newUrl)) { |
| curPath.add(newUrl); |
| LOG.info("Added jar[" + newUrl + "] to classpath."); |
| newPathAdded = true; |
| } |
| } |
| |
| if (newPathAdded) { |
| URLClassLoader newLoader = |
| new URLClassLoader(curPath.toArray(new URL[curPath.size()]), loader); |
| Thread.currentThread().setContextClassLoader(newLoader); |
| } |
| return localNewPaths; |
| } |
| |
| /** |
| * Create a URL from a string representing a path to a local file. |
| * The path string can be just a path, or can start with file:/, file:/// |
| * @param path path string |
| * @return |
| */ |
| private static URL urlFromPathString(String path, Long timeStamp, |
| Configuration conf, File localTmpDir) { |
| URL url = null; |
| try { |
| if (StringUtils.indexOf(path, "file:/") == 0) { |
| url = new URL(path); |
| } else if (StringUtils.indexOf(path, "hdfs:/") == 0) { |
| Path remoteFile = new Path(path); |
| Path localFile = |
| new Path(localTmpDir.getAbsolutePath() + File.separator + remoteFile.getName()); |
| Long currentTS = downloadedFiles.get(path); |
| if (currentTS == null) { |
| currentTS = -1L; |
| } |
| if (!new File(localFile.toString()).exists() || currentTS < timeStamp) { |
| LOG.info("Copying " + remoteFile + " to " + localFile); |
| FileSystem remoteFS = remoteFile.getFileSystem(conf); |
| remoteFS.copyToLocalFile(remoteFile, localFile); |
| downloadedFiles.put(path, timeStamp); |
| } |
| return urlFromPathString(localFile.toString(), timeStamp, conf, localTmpDir); |
| } else { |
| url = new File(path).toURL(); |
| } |
| } catch (Exception err) { |
| LOG.error("Bad URL " + path + ", ignoring path", err); |
| } |
| return url; |
| } |
| |
| public static boolean isYarnClusterMode(String master, String deployMode) { |
| return "yarn-cluster".equals(master) || |
| ("yarn".equals(master) && "cluster".equals(deployMode)); |
| } |
| |
| public static boolean isYarnClientMode(String master, String deployMode) { |
| return "yarn-client".equals(master) || |
| ("yarn".equals(master) && "client".equals(deployMode)); |
| } |
| |
| public static boolean isYarnMaster(String master) { |
| return master != null && master.startsWith("yarn"); |
| } |
| |
| public static boolean isLocalMaster(String master) { |
| return master != null && master.startsWith("local"); |
| } |
| |
| public static String getDeployModeFromMaster(String master) { |
| if (master != null) { |
| if (master.equals("yarn-client")) { |
| return "client"; |
| } else if (master.equals("yarn-cluster")) { |
| return "cluster"; |
| } |
| } |
| return null; |
| } |
| } |