| /** |
| * 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.hadoop.fs.azurebfs; |
| |
| import java.util.Arrays; |
| import java.util.Random; |
| |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| |
| import org.apache.hadoop.fs.FSDataInputStream; |
| import org.apache.hadoop.fs.FSDataOutputStream; |
| import org.apache.hadoop.fs.Path; |
| |
| import static org.apache.hadoop.fs.azurebfs.constants.FileSystemConfigurations.DEFAULT_READ_BUFFER_SIZE; |
| import static org.apache.hadoop.fs.azurebfs.constants.FileSystemConfigurations.MAX_BUFFER_SIZE; |
| import static org.apache.hadoop.fs.azurebfs.constants.FileSystemConfigurations.MIN_BUFFER_SIZE; |
| |
| /** |
| * Test read, write and seek. |
| * Uses package-private methods in AbfsConfiguration, which is why it is in |
| * this package. |
| */ |
| @RunWith(Parameterized.class) |
| public class ITestAbfsReadWriteAndSeek extends AbstractAbfsScaleTest { |
| private static final Path TEST_PATH = new Path("/testfile"); |
| |
| @Parameterized.Parameters(name = "Size={0}") |
| public static Iterable<Object[]> sizes() { |
| return Arrays.asList(new Object[][]{{MIN_BUFFER_SIZE}, |
| {DEFAULT_READ_BUFFER_SIZE}, |
| {MAX_BUFFER_SIZE}}); |
| } |
| |
| private final int size; |
| |
| public ITestAbfsReadWriteAndSeek(final int size) throws Exception { |
| this.size = size; |
| } |
| |
| @Test |
| public void testReadAndWriteWithDifferentBufferSizesAndSeek() throws Exception { |
| testReadWriteAndSeek(size); |
| } |
| |
| private void testReadWriteAndSeek(int bufferSize) throws Exception { |
| final AzureBlobFileSystem fs = getFileSystem(); |
| final AbfsConfiguration abfsConfiguration = fs.getAbfsStore().getAbfsConfiguration(); |
| |
| abfsConfiguration.setWriteBufferSize(bufferSize); |
| abfsConfiguration.setReadBufferSize(bufferSize); |
| |
| |
| final byte[] b = new byte[2 * bufferSize]; |
| new Random().nextBytes(b); |
| try (FSDataOutputStream stream = fs.create(TEST_PATH)) { |
| stream.write(b); |
| } |
| |
| final byte[] readBuffer = new byte[2 * bufferSize]; |
| int result; |
| try (FSDataInputStream inputStream = fs.open(TEST_PATH)) { |
| inputStream.seek(bufferSize); |
| result = inputStream.read(readBuffer, bufferSize, bufferSize); |
| assertNotEquals(-1, result); |
| inputStream.seek(0); |
| result = inputStream.read(readBuffer, 0, bufferSize); |
| } |
| assertNotEquals("data read in final read()", -1, result); |
| assertArrayEquals(readBuffer, b); |
| } |
| } |