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A single bundled dependency that includes all service and dependent JARs with third-party libraries relocated to different namespaces.

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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.util.Collection;
import java.util.concurrent.atomic.AtomicBoolean;

import com.qcloud.cos.event.ProgressEventType;
import com.qcloud.cos.event.ProgressListenerChain;

/**
 * Interface for multiple file transfers
 */
public abstract class MultipleFileTransfer extends AbstractTransfer {

    protected final Collection subTransfers;

    /** Whether any of the sub-transfers has started. **/
    private AtomicBoolean subTransferStarted = new AtomicBoolean(false);

    MultipleFileTransfer(String description, TransferProgress transferProgress,
            ProgressListenerChain progressListenerChain, Collection subTransfers) {
        super(description, transferProgress, progressListenerChain);
        this.subTransfers = subTransfers;
    }

    /**
     * Set the state based on the states of all file downloads. Assumes all file
     * downloads are done.
     * 

* A single failed sub-transfer makes the entire transfer failed. If there * are no failed sub-transfers, a single canceled sub-transfer makes the * entire transfer canceled. Otherwise, we consider ourselves Completed. */ public void collateFinalState() { boolean seenCanceled = false; for ( T download : subTransfers ) { if ( download.getState() == TransferState.Failed ) { setState(TransferState.Failed); return; } else if ( download.getState() == TransferState.Canceled ) { seenCanceled = true; } } if ( seenCanceled ) setState(TransferState.Canceled); else setState(TransferState.Completed); } /** * Override this method so that TransferState updates are also sent out to the * progress listener chain in forms of ProgressEvent. */ @Override public void setState(TransferState state) { super.setState(state); switch (state) { case Waiting: fireProgressEvent(ProgressEventType.TRANSFER_PREPARING_EVENT); break; case InProgress: if ( subTransferStarted.compareAndSet(false, true) ) { /* The first InProgress signal */ fireProgressEvent(ProgressEventType.TRANSFER_STARTED_EVENT); } /* Don't need any event code update for subsequent InProgress signals */ break; case Completed: fireProgressEvent(ProgressEventType.TRANSFER_COMPLETED_EVENT); break; case Canceled: fireProgressEvent(ProgressEventType.TRANSFER_CANCELED_EVENT); break; case Failed: fireProgressEvent(ProgressEventType.TRANSFER_FAILED_EVENT); break; default: break; } } }





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