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/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.elasticsearch.cloud.aws;
import com.amazonaws.AmazonClientException;
import com.amazonaws.AmazonServiceException;
import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.model.*;
import org.elasticsearch.ElasticsearchException;
import org.elasticsearch.common.logging.ESLogger;
import org.elasticsearch.common.logging.Loggers;
import org.elasticsearch.common.settings.Settings;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.atomic.AtomicLong;
import static com.carrotsearch.randomizedtesting.RandomizedTest.randomDouble;
/**
*
*/
public class TestAmazonS3 extends AmazonS3Wrapper {
protected final ESLogger logger = Loggers.getLogger(getClass());
private double writeFailureRate = 0.0;
private double readFailureRate = 0.0;
private String randomPrefix;
ConcurrentMap<String, AtomicLong> accessCounts = new ConcurrentHashMap<String, AtomicLong>();
private long incrementAndGet(String path) {
AtomicLong value = accessCounts.get(path);
if (value == null) {
value = accessCounts.putIfAbsent(path, new AtomicLong(1));
}
if (value != null) {
return value.incrementAndGet();
}
return 1;
}
public TestAmazonS3(AmazonS3 delegate, Settings settings) {
super(delegate);
randomPrefix = settings.get("cloud.aws.test.random");
writeFailureRate = settings.getAsDouble("cloud.aws.test.write_failures", 0.0);
readFailureRate = settings.getAsDouble("cloud.aws.test.read_failures", 0.0);
}
@Override
public PutObjectResult putObject(String bucketName, String key, InputStream input, ObjectMetadata metadata) throws AmazonClientException, AmazonServiceException {
if (shouldFail(bucketName, key, writeFailureRate)) {
long length = metadata.getContentLength();
long partToRead = (long) (length * randomDouble());
byte[] buffer = new byte[1024];
for (long cur = 0; cur < partToRead; cur += buffer.length) {
try {
input.read(buffer, 0, (int) (partToRead - cur > buffer.length ? buffer.length : partToRead - cur));
} catch (IOException ex) {
throw new ElasticsearchException("cannot read input stream", ex);
}
}
logger.info("--> random write failure on putObject method: throwing an exception for [bucket={}, key={}]", bucketName, key);
AmazonS3Exception ex = new AmazonS3Exception("Random S3 exception");
ex.setStatusCode(400);
ex.setErrorCode("RequestTimeout");
throw ex;
} else {
return super.putObject(bucketName, key, input, metadata);
}
}
@Override
public UploadPartResult uploadPart(UploadPartRequest request) throws AmazonClientException, AmazonServiceException {
if (shouldFail(request.getBucketName(), request.getKey(), writeFailureRate)) {
long length = request.getPartSize();
long partToRead = (long) (length * randomDouble());
byte[] buffer = new byte[1024];
for (long cur = 0; cur < partToRead; cur += buffer.length) {
try (InputStream input = request.getInputStream()){
input.read(buffer, 0, (int) (partToRead - cur > buffer.length ? buffer.length : partToRead - cur));
} catch (IOException ex) {
throw new ElasticsearchException("cannot read input stream", ex);
}
}
logger.info("--> random write failure on uploadPart method: throwing an exception for [bucket={}, key={}]", request.getBucketName(), request.getKey());
AmazonS3Exception ex = new AmazonS3Exception("Random S3 write exception");
ex.setStatusCode(400);
ex.setErrorCode("RequestTimeout");
throw ex;
} else {
return super.uploadPart(request);
}
}
@Override
public S3Object getObject(String bucketName, String key) throws AmazonClientException, AmazonServiceException {
if (shouldFail(bucketName, key, readFailureRate)) {
logger.info("--> random read failure on getObject method: throwing an exception for [bucket={}, key={}]", bucketName, key);
AmazonS3Exception ex = new AmazonS3Exception("Random S3 read exception");
ex.setStatusCode(404);
throw ex;
} else {
return super.getObject(bucketName, key);
}
}
private boolean shouldFail(String bucketName, String key, double probability) {
if (probability > 0.0) {
String path = randomPrefix + "-" + bucketName + "+" + key;
path += "/" + incrementAndGet(path);
return Math.abs(hashCode(path)) < Integer.MAX_VALUE * probability;
} else {
return false;
}
}
private int hashCode(String path) {
try {
MessageDigest digest = MessageDigest.getInstance("MD5");
byte[] bytes = digest.digest(path.getBytes("UTF-8"));
int i = 0;
return ((bytes[i++] & 0xFF) << 24) | ((bytes[i++] & 0xFF) << 16)
| ((bytes[i++] & 0xFF) << 8) | (bytes[i++] & 0xFF);
} catch (UnsupportedEncodingException ex) {
throw new ElasticsearchException("cannot calculate hashcode", ex);
} catch (NoSuchAlgorithmException ex) {
throw new ElasticsearchException("cannot calculate hashcode", ex);
}
}
}
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