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the sdk for sinacloud sc2 servies

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/*
 * Copyright 2013-2013 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.sinacloud.scs.internal;

import java.io.InputStream;
import java.security.DigestInputStream;
import java.security.MessageDigest;

/**
 * Base class for AWS Java SDK specific {@link DigestInputStream}.
 */
public class SdkDigestInputStream extends DigestInputStream {//implements MetricAware {
    public SdkDigestInputStream(InputStream stream, MessageDigest digest) {
        super(stream, digest);
    }

    public final boolean isMetricActivated() {
//        if (in instanceof MetricAware) {
//            MetricAware metricAware = (MetricAware)in;
//            return metricAware.isMetricActivated();
//        }
        return false;
    }
}