| /* |
| * 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.testutils; |
| |
| import java.io.BufferedOutputStream; |
| import java.io.BufferedWriter; |
| import java.io.File; |
| import java.io.FileOutputStream; |
| import java.io.FileWriter; |
| import java.io.IOException; |
| |
| public class TestFileUtils { |
| |
| private static final String FILE_PREFIX = "flink_test_"; |
| |
| private static final String FILE_SUFFIX = ".tmp"; |
| |
| public static String createTempFile(long bytes) throws IOException { |
| File f = File.createTempFile(FILE_PREFIX, FILE_SUFFIX); |
| f.deleteOnExit(); |
| |
| BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream(f)); |
| try { |
| for (; bytes > 0; bytes--) { |
| out.write(0); |
| } |
| } finally { |
| out.close(); |
| } |
| return f.toURI().toString(); |
| } |
| |
| public static String createTempFileInDirectory(String dir, String contents) throws IOException { |
| File f; |
| do { |
| f = new File(dir + "/" + randomFileName()); |
| } while (f.exists()); |
| f.getParentFile().mkdirs(); |
| f.createNewFile(); |
| f.deleteOnExit(); |
| |
| try (BufferedWriter out = new BufferedWriter(new FileWriter(f))) { |
| out.write(contents); |
| } |
| return f.toURI().toString(); |
| } |
| |
| public static String createTempFileInDirectory(String dir, long bytes) throws IOException { |
| File f; |
| do { |
| f = new File(dir + "/" + randomFileName()); |
| } while (f.exists()); |
| f.getParentFile().mkdirs(); |
| f.createNewFile(); |
| f.deleteOnExit(); |
| |
| try (BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream(f))) { |
| for (; bytes > 0; bytes--) { |
| out.write(0); |
| } |
| } |
| return f.toURI().toString(); |
| } |
| |
| public static String createTempFile(String contents) throws IOException { |
| File f = File.createTempFile(FILE_PREFIX, FILE_SUFFIX); |
| f.deleteOnExit(); |
| |
| try (BufferedWriter out = new BufferedWriter(new FileWriter(f))) { |
| out.write(contents); |
| } |
| return f.toURI().toString(); |
| } |
| |
| // ------------------------------------------------------------------------ |
| |
| public static String createTempFileDir(long ... bytes) throws IOException { |
| File tempDir = new File(System.getProperty("java.io.tmpdir")); |
| File f = null; |
| do { |
| f = new File(tempDir, randomFileName()); |
| } while (f.exists()); |
| f.mkdirs(); |
| f.deleteOnExit(); |
| |
| for (long l : bytes) { |
| File child = new File(f, randomFileName()); |
| child.deleteOnExit(); |
| |
| try (BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream(child))) { |
| for (; l > 0; l--) { |
| out.write(0); |
| } |
| } |
| } |
| return f.toURI().toString(); |
| } |
| |
| public static String createTempFileDir(String ... contents) throws IOException { |
| return createTempFileDirExtension(FILE_SUFFIX, contents); |
| } |
| |
| public static String createTempFileDirExtension(String fileExtension, String ... contents ) throws IOException { |
| File tempDir = new File(System.getProperty("java.io.tmpdir")); |
| File f = null; |
| do { |
| f = new File(tempDir, randomFileName(FILE_SUFFIX)); |
| } while (f.exists()); |
| f.mkdirs(); |
| f.deleteOnExit(); |
| |
| for (String s : contents) { |
| File child = new File(f, randomFileName(fileExtension)); |
| child.deleteOnExit(); |
| |
| try (BufferedWriter out = new BufferedWriter(new FileWriter(child))) { |
| out.write(s); |
| } |
| } |
| return f.toURI().toString(); |
| } |
| |
| public static String randomFileName() { |
| return randomFileName(FILE_SUFFIX); |
| } |
| public static String randomFileName(String fileSuffix) { |
| return FILE_PREFIX + ((int) (Math.random() * Integer.MAX_VALUE)) + fileSuffix; |
| } |
| |
| // ------------------------------------------------------------------------ |
| |
| private TestFileUtils() {} |
| } |