com.amazonaws.services.sqs.QueueUrlHandler Maven / Gradle / Ivy
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/*
* Copyright 2010-2014 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file 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 com.amazonaws.services.sqs;
import java.net.URI;
import java.net.URISyntaxException;
import com.amazonaws.AmazonClientException;
import com.amazonaws.Request;
import com.amazonaws.handlers.AbstractRequestHandler;
/**
* Custom request handler for SQS that processes the request before it gets
* routed to the client runtime layer.
*
* SQS MessageQueue operations take a QueueUrl parameter that needs special
* handling to update the endpoint and resource path on the request before it's
* executed.
*/
public class QueueUrlHandler extends AbstractRequestHandler {
private static final String QUEUE_URL_PARAMETER = "QueueUrl";
public void beforeRequest(Request request) {
if (request.getParameters().get(QUEUE_URL_PARAMETER) != null) {
String queueUrl = (String)request.getParameters().remove(QUEUE_URL_PARAMETER);
try {
URI uri = new URI(queueUrl);
request.setResourcePath(uri.getPath());
if (uri.getHost() != null) {
// If the URI has a host specified, set the request's endpoint to the queue URLs
// endpoint, so that queue URLs from different regions will send the request to
// the correct endpoint.
URI uriWithoutPath = new URI(uri.toString().replace(uri.getPath(), ""));
request.setEndpoint(uriWithoutPath);
}
} catch (URISyntaxException e) {
throw new AmazonClientException("Unable to parse SQS queue URL '" + queueUrl + "'", e);
}
}
}
}