| /* |
| * 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.solr.util; |
| |
| import java.io.File; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.solr.common.SolrException; |
| import org.apache.solr.common.SolrException.ErrorCode; |
| |
| public class HdfsUtil { |
| |
| // Allows tests to easily add additional conf |
| public static Configuration TEST_CONF = null; |
| |
| private static final String[] HADOOP_CONF_FILES = {"core-site.xml", |
| "hdfs-site.xml", "mapred-site.xml", "yarn-site.xml", "hadoop-site.xml"}; |
| |
| public static void addHdfsResources(Configuration conf, String confDir) { |
| |
| if (confDir != null && confDir.length() > 0) { |
| File confDirFile = new File(confDir); |
| if (!confDirFile.exists()) { |
| throw new SolrException(ErrorCode.SERVER_ERROR, "Resource directory does not exist: " + confDirFile.getAbsolutePath()); |
| } |
| if (!confDirFile.isDirectory()) { |
| throw new SolrException(ErrorCode.SERVER_ERROR, "Specified resource directory is not a directory" + confDirFile.getAbsolutePath()); |
| } |
| if (!confDirFile.canRead()) { |
| throw new SolrException(ErrorCode.SERVER_ERROR, "Resource directory must be readable by the Solr process: " + confDirFile.getAbsolutePath()); |
| } |
| for (String file : HADOOP_CONF_FILES) { |
| if (new File(confDirFile, file).exists()) { |
| conf.addResource(new Path(confDir, file)); |
| } |
| } |
| } |
| |
| if (TEST_CONF != null) { |
| conf.addResource(TEST_CONF); |
| } |
| } |
| } |