001    package 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    
022    import java.text.DecimalFormat;
023    import java.text.DecimalFormatSymbols;
024    import java.util.Locale;
025    
026    import org.eclipse.aether.transfer.AbstractTransferListener;
027    import org.eclipse.aether.transfer.TransferCancelledException;
028    import org.eclipse.aether.transfer.TransferEvent;
029    import org.eclipse.aether.transfer.TransferResource;
030    import org.slf4j.Logger;
031    import org.slf4j.LoggerFactory;
032    
033    public class Slf4jMavenTransferListener
034        extends AbstractTransferListener
035    {
036    
037        protected final Logger out;
038    
039        public Slf4jMavenTransferListener()
040        {
041            this.out = LoggerFactory.getLogger( Slf4jMavenTransferListener.class );
042        }
043    
044        // TODO should we deprecate?
045        public Slf4jMavenTransferListener( Logger out )
046        {
047            this.out = out;
048        }
049    
050        @Override
051        public void transferInitiated( TransferEvent event )
052        {
053            String message = event.getRequestType() == TransferEvent.RequestType.PUT ? "Uploading" : "Downloading";
054    
055            out.info( message + ": " + event.getResource().getRepositoryUrl() + event.getResource().getResourceName() );
056        }
057    
058        @Override
059        public void transferCorrupted( TransferEvent event )
060            throws TransferCancelledException
061        {
062            TransferResource resource = event.getResource();
063    
064            out.warn( event.getException().getMessage() + " for " + resource.getRepositoryUrl() + resource.getResourceName() );
065        }
066    
067        @Override
068        public void transferSucceeded( TransferEvent event )
069        {
070            TransferResource resource = event.getResource();
071            long contentLength = event.getTransferredBytes();
072            if ( contentLength >= 0 )
073            {
074                String type = ( event.getRequestType() == TransferEvent.RequestType.PUT ? "Uploaded" : "Downloaded" );
075                String len = contentLength >= 1024 ? toKB( contentLength ) + " KB" : contentLength + " B";
076    
077                String throughput = "";
078                long duration = System.currentTimeMillis() - resource.getTransferStartTime();
079                if ( duration > 0 )
080                {
081                    DecimalFormat format = new DecimalFormat( "0.0", new DecimalFormatSymbols( Locale.ENGLISH ) );
082                    double kbPerSec = ( contentLength / 1024.0 ) / ( duration / 1000.0 );
083                    throughput = " at " + format.format( kbPerSec ) + " KB/sec";
084                }
085    
086                out.info( type + ": " + resource.getRepositoryUrl() + resource.getResourceName() + " (" + len
087                    + throughput + ")" );
088            }
089        }
090    
091        protected long toKB( long bytes )
092        {
093            return ( bytes + 1023 ) / 1024;
094        }
095    
096    }