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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 2015-2016 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.internal;

import java.io.IOException;
import java.io.InputStream;
import java.net.Socket;

import com.amazonaws.util.AWSRequestMetrics;

/**
 * A wrapper to Socket with metrics feature to record socket read time.
 */
public class SdkMetricsSocket extends DelegateSocket {

    private MetricsInputStream metricsIS;

    public SdkMetricsSocket(Socket sock) {
        super(sock);
    }

    /**
     * {@link AWSRequestMetrics} is set per request.
     */
    public void setMetrics(AWSRequestMetrics metrics) {
        if (metricsIS == null) {
            throw new IllegalStateException(
                    "The underlying input stream must be initialized!");
        }
        metricsIS.setMetrics(metrics);
    }

    @Override
    public InputStream getInputStream() throws IOException {
        metricsIS = new MetricsInputStream(sock.getInputStream());
        return metricsIS;
    }

}