001package org.apache.maven.cli.transfer;
002
003/*
004 * Licensed to the Apache Software Foundation (ASF) under one
005 * or more contributor license agreements.  See the NOTICE file
006 * distributed with this work for additional information
007 * regarding copyright ownership.  The ASF licenses this file
008 * to you under the Apache License, Version 2.0 (the
009 * "License"); you may not use this file except in compliance
010 * with the License.  You may obtain a copy of the License at
011 *
012 *  http://www.apache.org/licenses/LICENSE-2.0
013 *
014 * Unless required by applicable law or agreed to in writing,
015 * software distributed under the License is distributed on an
016 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
017 * KIND, either express or implied.  See the License for the
018 * specific language governing permissions and limitations
019 * under the License.
020 */
021
022import java.io.PrintStream;
023import java.text.DecimalFormat;
024import java.text.DecimalFormatSymbols;
025import java.util.Locale;
026
027import org.eclipse.aether.transfer.AbstractTransferListener;
028import org.eclipse.aether.transfer.TransferCancelledException;
029import org.eclipse.aether.transfer.TransferEvent;
030import org.eclipse.aether.transfer.TransferResource;
031
032public abstract class AbstractMavenTransferListener
033    extends AbstractTransferListener
034{
035
036    protected PrintStream out;
037
038    protected AbstractMavenTransferListener( PrintStream out )
039    {
040        this.out = out;
041    }
042
043    @Override
044    public void transferInitiated( TransferEvent event )
045    {
046        String message = event.getRequestType() == TransferEvent.RequestType.PUT ? "Uploading" : "Downloading";
047
048        out.println( message + ": " + event.getResource().getRepositoryUrl() + event.getResource().getResourceName() );
049    }
050
051    @Override
052    public void transferCorrupted( TransferEvent event )
053        throws TransferCancelledException
054    {
055        TransferResource resource = event.getResource();
056
057        out.println( "[WARNING] " + event.getException().getMessage() + " for " + resource.getRepositoryUrl()
058            + resource.getResourceName() );
059    }
060
061    @Override
062    public void transferSucceeded( TransferEvent event )
063    {
064        TransferResource resource = event.getResource();
065        long contentLength = event.getTransferredBytes();
066        if ( contentLength >= 0 )
067        {
068            String type = ( event.getRequestType() == TransferEvent.RequestType.PUT ? "Uploaded" : "Downloaded" );
069            String len = contentLength >= 1024 ? toKB( contentLength ) + " KB" : contentLength + " B";
070
071            String throughput = "";
072            long duration = System.currentTimeMillis() - resource.getTransferStartTime();
073            if ( duration > 0 )
074            {
075                DecimalFormat format = new DecimalFormat( "0.0", new DecimalFormatSymbols( Locale.ENGLISH ) );
076                double kbPerSec = ( contentLength / 1024.0 ) / ( duration / 1000.0 );
077                throughput = " at " + format.format( kbPerSec ) + " KB/sec";
078            }
079
080            out.println( type + ": " + resource.getRepositoryUrl() + resource.getResourceName() + " (" + len
081                + throughput + ")" );
082        }
083    }
084
085    protected long toKB( long bytes )
086    {
087        return ( bytes + 1023 ) / 1024;
088    }
089
090}