| /* |
| * 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.flink.configuration; |
| |
| import javax.annotation.Nonnull; |
| |
| import java.io.File; |
| |
| /** |
| * Utility class for {@link Configuration} related helper functions. |
| */ |
| public class ConfigurationUtils { |
| |
| private static final String[] EMPTY = new String[0]; |
| |
| /** |
| * Extracts the task manager directories for temporary files as defined by |
| * {@link org.apache.flink.configuration.CoreOptions#TMP_DIRS}. |
| * |
| * @param configuration configuration object |
| * @return array of configured directories (in order) |
| */ |
| @Nonnull |
| public static String[] parseTempDirectories(Configuration configuration) { |
| return splitPaths(configuration.getString(CoreOptions.TMP_DIRS)); |
| } |
| |
| /** |
| * Extracts the local state directories as defined by |
| * {@link CheckpointingOptions#LOCAL_RECOVERY_TASK_MANAGER_STATE_ROOT_DIRS}. |
| * |
| * @param configuration configuration object |
| * @return array of configured directories (in order) |
| */ |
| @Nonnull |
| public static String[] parseLocalStateDirectories(Configuration configuration) { |
| String configValue = configuration.getString(CheckpointingOptions.LOCAL_RECOVERY_TASK_MANAGER_STATE_ROOT_DIRS, ""); |
| return splitPaths(configValue); |
| } |
| |
| /** |
| * Extracts the working state directories as defined by {@link CheckpointingOptions#WORKING_DIRS}. |
| * |
| * @param configuration configuration object |
| * @return array of configured directories (in order) |
| */ |
| @Nonnull |
| public static String[] parseWorkingDirectories(Configuration configuration) { |
| String configValue = configuration.getString(CheckpointingOptions.WORKING_DIRS, ""); |
| return splitPaths(configValue); |
| } |
| |
| @Nonnull |
| private static String[] splitPaths(@Nonnull String separatedPaths) { |
| return separatedPaths.length() > 0 ? separatedPaths.split(",|" + File.pathSeparator) : EMPTY; |
| } |
| |
| // Make sure that we cannot instantiate this class |
| private ConfigurationUtils() { |
| } |
| } |