| package org.apache.maven.resolver.examples.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.MetadataNotFoundException; |
| import org.eclipse.aether.transfer.TransferEvent; |
| import org.eclipse.aether.transfer.TransferResource; |
| |
| /** |
| * A simplistic transfer listener that logs uploads/downloads to the console. |
| */ |
| 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"; |
| |
| out.println( message + ": " + event.getResource().getRepositoryUrl() + event.getResource().getResourceName() ); |
| } |
| |
| @Override |
| public void transferProgressed( TransferEvent event ) |
| { |
| TransferResource resource = event.getResource(); |
| downloads.put( resource, Long.valueOf( event.getTransferredBytes() ) ); |
| |
| StringBuilder buffer = new StringBuilder( 64 ); |
| |
| for ( Map.Entry<TransferResource, Long> entry : downloads.entrySet() ) |
| { |
| long total = entry.getKey().getContentLength(); |
| long complete = entry.getValue().longValue(); |
| |
| buffer.append( getStatus( complete, total ) ).append( " " ); |
| } |
| |
| int pad = lastLength - buffer.length(); |
| lastLength = buffer.length(); |
| pad( buffer, pad ); |
| buffer.append( '\r' ); |
| |
| out.print( buffer ); |
| } |
| |
| 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 ) |
| { |
| long bytes = contentLength - resource.getResumeOffset(); |
| DecimalFormat format = new DecimalFormat( "0.0", new DecimalFormatSymbols( Locale.ENGLISH ) ); |
| double kbPerSec = ( bytes / 1024.0 ) / ( duration / 1000.0 ); |
| throughput = " at " + format.format( kbPerSec ) + " KB/sec"; |
| } |
| |
| out.println( type + ": " + resource.getRepositoryUrl() + resource.getResourceName() + " (" + len |
| + throughput + ")" ); |
| } |
| } |
| |
| @Override |
| public void transferFailed( TransferEvent event ) |
| { |
| transferCompleted( event ); |
| |
| if ( !( event.getException() instanceof MetadataNotFoundException ) ) |
| { |
| event.getException().printStackTrace( out ); |
| } |
| } |
| |
| private void transferCompleted( TransferEvent event ) |
| { |
| downloads.remove( event.getResource() ); |
| |
| StringBuilder buffer = new StringBuilder( 64 ); |
| pad( buffer, lastLength ); |
| buffer.append( '\r' ); |
| out.print( buffer ); |
| } |
| |
| public void transferCorrupted( TransferEvent event ) |
| { |
| event.getException().printStackTrace( out ); |
| } |
| |
| protected long toKB( long bytes ) |
| { |
| return ( bytes + 1023 ) / 1024; |
| } |
| |
| } |