| /* |
| * 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.tests.util; |
| |
| import org.apache.flink.tests.util.parameters.ParameterProperty; |
| |
| import java.io.FileNotFoundException; |
| import java.io.IOException; |
| import java.nio.file.FileAlreadyExistsException; |
| import java.nio.file.FileVisitOption; |
| import java.nio.file.FileVisitResult; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.nio.file.Paths; |
| import java.nio.file.SimpleFileVisitor; |
| import java.nio.file.StandardCopyOption; |
| import java.nio.file.attribute.BasicFileAttributes; |
| import java.util.EnumSet; |
| import java.util.List; |
| import java.util.regex.Pattern; |
| import java.util.stream.Collectors; |
| import java.util.stream.Stream; |
| |
| /** General test utilities. */ |
| public enum TestUtils { |
| ; |
| |
| private static final ParameterProperty<Path> MODULE_DIRECTORY = |
| new ParameterProperty<>("moduleDir", Paths::get); |
| |
| /** |
| * Searches for a resource file matching the given regex in the given directory. This method is |
| * primarily intended to be used for the initialization of static {@link Path} fields for |
| * resource file(i.e. jar, config file) that reside in the modules {@code target} directory. |
| * |
| * @param resourceNameRegex regex pattern to match against |
| * @return Path pointing to the matching jar |
| * @throws RuntimeException if none or multiple resource files could be found |
| */ |
| public static Path getResource(final String resourceNameRegex) { |
| // if the property is not set then we are most likely running in the IDE, where the working |
| // directory is the |
| // module of the test that is currently running, which is exactly what we want |
| Path moduleDirectory = MODULE_DIRECTORY.get(Paths.get("").toAbsolutePath()); |
| |
| try (Stream<Path> dependencyResources = Files.walk(moduleDirectory)) { |
| final List<Path> matchingResources = |
| dependencyResources |
| .filter( |
| jar -> |
| Pattern.compile(resourceNameRegex) |
| .matcher(jar.toAbsolutePath().toString()) |
| .find()) |
| .collect(Collectors.toList()); |
| switch (matchingResources.size()) { |
| case 0: |
| throw new RuntimeException( |
| new FileNotFoundException( |
| String.format( |
| "No resource file could be found that matches the pattern %s. " |
| + "This could mean that the test module must be rebuilt via maven.", |
| resourceNameRegex))); |
| case 1: |
| return matchingResources.get(0); |
| default: |
| throw new RuntimeException( |
| new IOException( |
| String.format( |
| "Multiple resource files were found matching the pattern %s. Matches=%s", |
| resourceNameRegex, matchingResources))); |
| } |
| } catch (final IOException ioe) { |
| throw new RuntimeException("Could not search for resource resource files.", ioe); |
| } |
| } |
| |
| /** |
| * Copy all the files and sub-directories under source directory to destination directory |
| * recursively. |
| * |
| * @param source directory or file path to copy from. |
| * @param destination directory or file path to copy to. |
| * @return Path of the destination directory. |
| * @throws IOException if any IO error happen. |
| */ |
| public static Path copyDirectory(final Path source, final Path destination) throws IOException { |
| Files.walkFileTree( |
| source, |
| EnumSet.of(FileVisitOption.FOLLOW_LINKS), |
| Integer.MAX_VALUE, |
| new SimpleFileVisitor<Path>() { |
| @Override |
| public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes ignored) |
| throws IOException { |
| final Path targetDir = destination.resolve(source.relativize(dir)); |
| try { |
| Files.copy(dir, targetDir, StandardCopyOption.COPY_ATTRIBUTES); |
| } catch (FileAlreadyExistsException e) { |
| if (!Files.isDirectory(targetDir)) { |
| throw e; |
| } |
| } |
| return FileVisitResult.CONTINUE; |
| } |
| |
| @Override |
| public FileVisitResult visitFile(Path file, BasicFileAttributes ignored) |
| throws IOException { |
| Files.copy( |
| file, |
| destination.resolve(source.relativize(file)), |
| StandardCopyOption.COPY_ATTRIBUTES); |
| return FileVisitResult.CONTINUE; |
| } |
| }); |
| |
| return destination; |
| } |
| } |