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package org.apache.maven.repository.internal.util;
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License 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.
*/
import java.io.PrintStream;
import java.text.DecimalFormat;
import java.text.DecimalFormatSymbols;
import java.util.Locale;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import org.eclipse.aether.transfer.AbstractTransferListener;
import org.eclipse.aether.transfer.TransferEvent;
import org.eclipse.aether.transfer.TransferResource;
public class ConsoleTransferListener
extends AbstractTransferListener
{
private PrintStream out;
private Map<TransferResource, Long> downloads = new ConcurrentHashMap<TransferResource, Long>();
private int lastLength;
public ConsoleTransferListener()
{
this( null );
}
public ConsoleTransferListener( PrintStream out )
{
this.out = ( out != null ) ? out : System.out;
}
@Override
public void transferInitiated( TransferEvent event )
{
String message = event.getRequestType() == TransferEvent.RequestType.PUT ? "Uploading" : "Downloading";
println( "transferInitiated", message + ": " + event.getResource().getRepositoryUrl() + event.getResource().getResourceName() );
}
@Override
public void transferProgressed( TransferEvent event )
{
TransferResource resource = event.getResource();
downloads.put( resource, event.getTransferredBytes() );
StringBuilder buffer = new StringBuilder( 64 );
for ( Map.Entry<TransferResource, Long> entry : downloads.entrySet() )
{
long total = entry.getKey().getContentLength();
long complete = entry.getValue();
buffer.append( getStatus( complete, total ) ).append( " " );
}
int pad = lastLength - buffer.length();
lastLength = buffer.length();
pad( buffer, pad );
buffer.append( '\r' );
print( "transferProgressed", buffer.toString() );
}
private String getStatus( long complete, long total )
{
if ( total >= 1024 )
{
return toKB( complete ) + "/" + toKB( total ) + " KB ";
}
else if ( total >= 0 )
{
return complete + "/" + total + " B ";
}
else if ( complete >= 1024 )
{
return toKB( complete ) + " KB ";
}
else
{
return complete + " B ";
}
}
private void pad( StringBuilder buffer, int spaces )
{
String block = " ";
while ( spaces > 0 )
{
int n = Math.min( spaces, block.length() );
buffer.append( block, 0, n );
spaces -= n;
}
}
@Override
public void transferSucceeded( TransferEvent event )
{
transferCompleted( event );
TransferResource resource = event.getResource();
long contentLength = event.getTransferredBytes();
if ( contentLength >= 0 )
{
String type = ( event.getRequestType() == TransferEvent.RequestType.PUT ? "Uploaded" : "Downloaded" );
String len = contentLength >= 1024 ? toKB( contentLength ) + " KB" : contentLength + " B";
String throughput = "";
long duration = System.currentTimeMillis() - resource.getTransferStartTime();
if ( duration > 0 )
{
DecimalFormat format = new DecimalFormat( "0.0", new DecimalFormatSymbols( Locale.ENGLISH ) );
double kbPerSec = ( contentLength / 1024.0 ) / ( duration / 1000.0 );
throughput = " at " + format.format( kbPerSec ) + " KB/sec";
}
println( "transferSucceeded", type + ": " + resource.getRepositoryUrl() + resource.getResourceName() + " ("
+ len + throughput + ")" );
}
}
@Override
public void transferFailed( TransferEvent event )
{
transferCompleted( event );
println( "transferFailed", event.getException().getClass() + ": " + event.getException().getMessage() );
}
private void transferCompleted( TransferEvent event )
{
downloads.remove( event.getResource() );
StringBuilder buffer = new StringBuilder( 64 );
pad( buffer, lastLength );
buffer.append( '\r' );
out.println( buffer );
}
@Override
public void transferCorrupted( TransferEvent event )
{
println( "transferCorrupted", event.getException().getClass() + ": " + event.getException().getMessage() );
}
protected long toKB( long bytes )
{
return ( bytes + 1023 ) / 1024;
}
private void println( String event, String message )
{
print( event, message );
out.println();
}
private void print( String event, String message )
{
out.print( "Aether Transfer - " + event );
if ( message != null )
{
out.print( ": " );
out.print( message );
}
}
}
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