| /* |
| * 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.s3a.prefetch; |
| |
| import java.nio.ByteBuffer; |
| |
| import org.junit.Test; |
| |
| import org.apache.hadoop.test.AbstractHadoopTestBase; |
| |
| import static org.apache.hadoop.test.LambdaTestUtils.intercept; |
| import static org.junit.Assert.assertEquals; |
| |
| public class TestS3ARemoteObjectReader extends AbstractHadoopTestBase { |
| |
| private static final int FILE_SIZE = 9; |
| |
| private static final int BUFFER_SIZE = 2; |
| |
| private final S3ARemoteObject remoteObject = |
| new MockS3ARemoteObject(FILE_SIZE, false); |
| |
| @Test |
| public void testArgChecks() throws Exception { |
| // Should not throw. |
| S3ARemoteObjectReader reader = new S3ARemoteObjectReader(remoteObject); |
| |
| // Verify it throws correctly. |
| |
| intercept( |
| IllegalArgumentException.class, |
| "'remoteObject' must not be null", |
| () -> new S3ARemoteObjectReader(null)); |
| |
| intercept( |
| IllegalArgumentException.class, |
| "'buffer' must not be null", |
| () -> reader.read(null, 10, 2)); |
| |
| ByteBuffer buffer = ByteBuffer.allocate(BUFFER_SIZE); |
| |
| intercept( |
| IllegalArgumentException.class, |
| "'offset' (-1) must be within the range [0, 9]", |
| () -> reader.read(buffer, -1, 2)); |
| |
| intercept( |
| IllegalArgumentException.class, |
| "'offset' (11) must be within the range [0, 9]", |
| () -> reader.read(buffer, 11, 2)); |
| |
| intercept( |
| IllegalArgumentException.class, |
| "'size' must be a positive integer", |
| () -> reader.read(buffer, 1, 0)); |
| |
| intercept( |
| IllegalArgumentException.class, |
| "'size' must be a positive integer", |
| () -> reader.read(buffer, 1, -1)); |
| } |
| |
| @Test |
| public void testGetWithOffset() throws Exception { |
| for (int i = 0; i < FILE_SIZE; i++) { |
| testGetHelper(false, i); // no retry |
| testGetHelper(true, i); // with retry |
| } |
| } |
| |
| private void testGetHelper(boolean testWithRetry, long startOffset) |
| throws Exception { |
| int numBlocks = 0; |
| ByteBuffer buffer; |
| S3ARemoteObjectReader reader = |
| new S3ARemoteObjectReader( |
| new MockS3ARemoteObject(FILE_SIZE, testWithRetry)); |
| int remainingSize = FILE_SIZE - (int) startOffset; |
| for (int bufferSize = 0; bufferSize <= FILE_SIZE + 1; bufferSize++) { |
| buffer = ByteBuffer.allocate(bufferSize); |
| for (int readSize = 1; readSize <= FILE_SIZE; readSize++) { |
| buffer.clear(); |
| int numBytesRead = reader.read(buffer, startOffset, readSize); |
| int expectedNumBytesRead = Math.min(readSize, remainingSize); |
| expectedNumBytesRead = Math.min(bufferSize, expectedNumBytesRead); |
| assertEquals(expectedNumBytesRead, numBytesRead); |
| |
| byte[] bytes = buffer.array(); |
| for (int i = 0; i < expectedNumBytesRead; i++) { |
| assertEquals(startOffset + i, bytes[i]); |
| } |
| } |
| } |
| } |
| } |