/**
* 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.azure;
import java.io.IOException;
import java.net.URI;
import java.util.Arrays;
import org.apache.commons.lang.RandomStringUtils;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FSDataInputStream;
import org.apache.hadoop.fs.FSDataOutputStream;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.test.GenericTestUtils;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
public class TestNativeAzureFileSystemAppend extends AbstractWasbTestBase {
private static final String TEST_FILE = "test.dat";
private static final Path TEST_PATH = new Path(TEST_FILE);
private AzureBlobStorageTestAccount testAccount = null;
@Before
public void setUp() throws Exception {
super.setUp();
testAccount = createTestAccount();
fs = testAccount.getFileSystem();
Configuration conf = fs.getConf();
conf.setBoolean(NativeAzureFileSystem.APPEND_SUPPORT_ENABLE_PROPERTY_NAME, true);
URI uri = fs.getUri();
fs.initialize(uri, conf);
}
/*
* Helper method that creates test data of size provided by the
* "size" parameter.
*/
private static byte[] getTestData(int size) {
byte[] testData = new byte[size];
System.arraycopy(RandomStringUtils.randomAlphabetic(size).getBytes(), 0, testData, 0, size);
return testData;
}
// Helper method to create file and write fileSize bytes of data on it.
private byte[] createBaseFileWithData(int fileSize, Path testPath) throws Throwable {
FSDataOutputStream createStream = null;
try {
createStream = fs.create(testPath);
byte[] fileData = null;
if (fileSize != 0) {
fileData = getTestData(fileSize);
createStream.write(fileData);
}
return fileData;
} finally {
if (createStream != null) {
createStream.close();
}
}
}
/*
* Helper method to verify a file data equal to "dataLength" parameter
*/
private boolean verifyFileData(int dataLength, byte[] testData, int testDataIndex,
FSDataInputStream srcStream) {
try {
byte[] fileBuffer = new byte[dataLength];
byte[] testDataBuffer = new byte[dataLength];
int fileBytesRead = srcStream.read(fileBuffer);
if (fileBytesRead < dataLength) {
return false;
}
System.arraycopy(testData, testDataIndex, testDataBuffer, 0, dataLength);
if (!Arrays.equals(fileBuffer, testDataBuffer)) {
return false;
}
return true;
} catch (Exception ex) {
return false;
}
}
/*
* Helper method to verify Append on a testFile.
*/
private boolean verifyAppend(byte[] testData, Path testFile) {
FSDataInputStream srcStream = null;
try {
srcStream = fs.open(testFile);
int baseBufferSize = 2048;
int testDataSize = testData.length;
int testDataIndex = 0;
while (testDataSize > baseBufferSize) {
if (!verifyFileData(baseBufferSize, testData, testDataIndex, srcStream)) {
return false;
}
testDataIndex += baseBufferSize;
testDataSize -= baseBufferSize;
}
if (!verifyFileData(testDataSize, testData, testDataIndex, srcStream)) {
return false;
}
return true;
} catch(Exception ex) {
return false;
} finally {
if (srcStream != null) {
try {
srcStream.close();
} catch(IOException ioe) {
// Swallowing
}
}
}
}
/*
* Test case to verify if an append on small size data works. This tests
* append E2E
*/
@Test
public void testSingleAppend() throws Throwable{
FSDataOutputStream appendStream = null;
try {
int baseDataSize = 50;
byte[] baseDataBuffer = createBaseFileWithData(baseDataSize, TEST_PATH);
int appendDataSize = 20;
byte[] appendDataBuffer = getTestData(appendDataSize);
appendStream = fs.append(TEST_PATH, 10);
appendStream.write(appendDataBuffer);
appendStream.close();
byte[] testData = new byte[baseDataSize + appendDataSize];
System.arraycopy(baseDataBuffer, 0, testData, 0, baseDataSize);
System.arraycopy(appendDataBuffer, 0, testData, baseDataSize, appendDataSize);
Assert.assertTrue(verifyAppend(testData, TEST_PATH));
} finally {
if (appendStream != null) {
appendStream.close();
}
}
}
/*
* Test case to verify append to an empty file.
*/
@Test
public void testSingleAppendOnEmptyFile() throws Throwable {
FSDataOutputStream appendStream = null;
try {
createBaseFileWithData(0, TEST_PATH);
int appendDataSize = 20;
byte[] appendDataBuffer = getTestData(appendDataSize);
appendStream = fs.append(TEST_PATH, 10);
appendStream.write(appendDataBuffer);
appendStream.close();
Assert.assertTrue(verifyAppend(appendDataBuffer, TEST_PATH));
} finally {
if (appendStream != null) {
appendStream.close();
}
}
}
/*
* Test to verify that we can open only one Append stream on a File.
*/
@Test
public void testSingleAppenderScenario() throws Throwable {
FSDataOutputStream appendStream1 = null;
FSDataOutputStream appendStream2 = null;
IOException ioe = null;
try {
createBaseFileWithData(0, TEST_PATH);
appendStream1 = fs.append(TEST_PATH, 10);
boolean encounteredException = false;
try {
appendStream2 = fs.append(TEST_PATH, 10);
} catch(IOException ex) {
encounteredException = true;
ioe = ex;
}
appendStream1.close();
Assert.assertTrue(encounteredException);
GenericTestUtils.assertExceptionContains("Unable to set Append lease on the Blob", ioe);
} finally {
if (appendStream1 != null) {
appendStream1.close();
}
if (appendStream2 != null) {
appendStream2.close();
}
}
}
/*
* Tests to verify multiple appends on a Blob.
*/
@Test
public void testMultipleAppends() throws Throwable {
int baseDataSize = 50;
byte[] baseDataBuffer = createBaseFileWithData(baseDataSize, TEST_PATH);
int appendDataSize = 100;
int targetAppendCount = 50;
byte[] testData = new byte[baseDataSize + (appendDataSize*targetAppendCount)];
int testDataIndex = 0;
System.arraycopy(baseDataBuffer, 0, testData, testDataIndex, baseDataSize);
testDataIndex += baseDataSize;
int appendCount = 0;
FSDataOutputStream appendStream = null;
try {
while (appendCount < targetAppendCount) {
byte[] appendDataBuffer = getTestData(appendDataSize);
appendStream = fs.append(TEST_PATH, 30);
appendStream.write(appendDataBuffer);
appendStream.close();
System.arraycopy(appendDataBuffer, 0, testData, testDataIndex, appendDataSize);
testDataIndex += appendDataSize;
appendCount++;
}
Assert.assertTrue(verifyAppend(testData, TEST_PATH));
} finally {
if (appendStream != null) {
appendStream.close();
}
}
}
/*
* Test to verify we multiple appends on the same stream.
*/
@Test
public void testMultipleAppendsOnSameStream() throws Throwable {
int baseDataSize = 50;
byte[] baseDataBuffer = createBaseFileWithData(baseDataSize, TEST_PATH);
int appendDataSize = 100;
int targetAppendCount = 50;
byte[] testData = new byte[baseDataSize + (appendDataSize*targetAppendCount)];
int testDataIndex = 0;
System.arraycopy(baseDataBuffer, 0, testData, testDataIndex, baseDataSize);
testDataIndex += baseDataSize;
int appendCount = 0;
FSDataOutputStream appendStream = null;
try {
while (appendCount < targetAppendCount) {
appendStream = fs.append(TEST_PATH, 50);
int singleAppendChunkSize = 20;
int appendRunSize = 0;
while (appendRunSize < appendDataSize) {
byte[] appendDataBuffer = getTestData(singleAppendChunkSize);
appendStream.write(appendDataBuffer);
System.arraycopy(appendDataBuffer, 0, testData,
testDataIndex + appendRunSize, singleAppendChunkSize);
appendRunSize += singleAppendChunkSize;
}
appendStream.close();
testDataIndex += appendDataSize;
appendCount++;
}
Assert.assertTrue(verifyAppend(testData, TEST_PATH));
} finally {
if (appendStream != null) {
appendStream.close();
}
}
}
@Test(expected=UnsupportedOperationException.class)
/*
* Test to verify the behavior when Append Support configuration flag is set to false
*/
public void testFalseConfigurationFlagBehavior() throws Throwable {
fs = testAccount.getFileSystem();
Configuration conf = fs.getConf();
conf.setBoolean(NativeAzureFileSystem.APPEND_SUPPORT_ENABLE_PROPERTY_NAME, false);
URI uri = fs.getUri();
fs.initialize(uri, conf);
FSDataOutputStream appendStream = null;
try {
createBaseFileWithData(0, TEST_PATH);
appendStream = fs.append(TEST_PATH, 10);
} finally {
if (appendStream != null) {
appendStream.close();
}
}
}
@Override
protected AzureBlobStorageTestAccount createTestAccount() throws Exception {
return AzureBlobStorageTestAccount.create();
}
}