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/*
 * Copyright 2010-2019 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.
 
 * According to cos feature, we modify some class，comment, field name, etc.
 */


package com.qcloud.cos.transfer;

import java.io.File;

import com.qcloud.cos.model.ObjectMetadata;

/**
 * This is the callback interface which is used by TransferManager.uploadDirectory and
 * TransferManager.uploadFileList. The callback is invoked for each file that is uploaded by
 * TransferManager and given an opportunity to specify the metadata for each file.
 */
public interface ObjectMetadataProvider {
    
    /*
     * This method is called for every file that is uploaded by TransferManager
     * and gives an opportunity to specify the metadata for the file.
     * 
     * @param file
     *          The file being uploaded. 
     * 
     * @param metadata
     *          The default metadata for the file. You can modify this object to specify
     * your own metadata.
     */
    public void provideObjectMetadata(final File file, final ObjectMetadata metadata);
    
}