com.amazonaws.services.sqs.internal.auth.SQSSignerProvider Maven / Gradle / Ivy

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The AWS SDK for Java with support for OSGi. The AWS SDK for Java provides Java APIs for building software on AWS' cost-effective, scalable, and reliable infrastructure products. The AWS Java SDK allows developers to code against APIs for all of Amazon's infrastructure web services (Amazon S3, Amazon EC2, Amazon SQS, Amazon Relational Database Service, Amazon AutoScaling, etc).

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/*
 * Copyright 2010-2016 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.internal.auth;

import com.amazonaws.AmazonWebServiceClient;
import com.amazonaws.auth.Signer;
import com.amazonaws.internal.auth.SignerProviderContext;
import com.amazonaws.internal.auth.SignerProvider;

/**
 * SQS alters the request endpoint as part of a request handler which inspects
 * the request's parameters.  As a result we must always look up the signer
 * by the resulting request URI.  This signer provider always does that lookup
 * instead of defaulting to a cached signer.
 */
public class SQSSignerProvider extends SignerProvider {

    private final AmazonWebServiceClient awsClient;

    public SQSSignerProvider(AmazonWebServiceClient awsClient,
                             Signer signer) {
        this.awsClient = awsClient;
    }

    @Override
    public Signer getSigner(SignerProviderContext context) {
        return awsClient.getSignerByURI(context.getUri());
    }

}