/*
* 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.jclouds.aws.handlers;
import static org.jclouds.http.HttpUtils.closeClientButKeepContentStream;
import java.util.Set;
import org.jclouds.aws.domain.AWSError;
import org.jclouds.aws.util.AWSUtils;
import org.jclouds.http.HttpCommand;
import org.jclouds.http.HttpResponse;
import org.jclouds.http.annotation.ServerError;
import org.jclouds.http.handlers.BackoffLimitedRetryHandler;
import com.google.inject.Inject;
import com.google.inject.Singleton;
/**
* Handles Retryable responses with error codes in the 5xx range
*
* @author Andrew Bayer
*/
@Singleton
public class AWSServerErrorRetryHandler extends BackoffLimitedRetryHandler {
private final AWSUtils utils;
private final Set<String> retryableServerCodes;
@Inject
public AWSServerErrorRetryHandler(AWSUtils utils,
@ServerError Set<String> retryableServerCodes) {
this.utils = utils;
this.retryableServerCodes = retryableServerCodes;
}
@Override
public boolean shouldRetryRequest(HttpCommand command, HttpResponse response) {
if (response.getStatusCode() == 503) {
// Content can be null in the case of HEAD requests
if (response.getPayload() != null) {
closeClientButKeepContentStream(response);
AWSError error = utils.parseAWSErrorFromContent(command.getCurrentRequest(), response);
if (error != null) {
return shouldRetryRequestOnError(command, response, error);
}
}
}
return false;
}
protected boolean shouldRetryRequestOnError(HttpCommand command, HttpResponse response, AWSError error) {
if (retryableServerCodes.contains(error.getCode()))
return super.shouldRetryRequest(command, response);
return false;
}
public void imposeBackoffExponentialDelay(long period, int pow, int failureCount, int max, String commandDescription) {
imposeBackoffExponentialDelay(period, period * 100l, pow, failureCount, max, commandDescription);
}
}