001package org.eclipse.aether.internal.impl;
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.util.ArrayList;
023import java.util.Collection;
024import java.util.Set;
025
026import javax.inject.Inject;
027import javax.inject.Named;
028
029import org.eclipse.aether.RepositoryEvent;
030import org.eclipse.aether.RepositoryListener;
031import org.eclipse.aether.impl.RepositoryEventDispatcher;
032import org.eclipse.aether.spi.locator.Service;
033import org.eclipse.aether.spi.locator.ServiceLocator;
034import org.eclipse.aether.spi.log.Logger;
035import org.eclipse.aether.spi.log.LoggerFactory;
036import org.eclipse.aether.spi.log.NullLoggerFactory;
037
038/**
039 */
040@Named
041public class DefaultRepositoryEventDispatcher
042    implements RepositoryEventDispatcher, Service
043{
044
045    private Logger logger = NullLoggerFactory.LOGGER;
046
047    private Collection<RepositoryListener> listeners = new ArrayList<RepositoryListener>();
048
049    public DefaultRepositoryEventDispatcher()
050    {
051        // enables no-arg constructor
052    }
053
054    @Inject
055    DefaultRepositoryEventDispatcher( Set<RepositoryListener> listeners, LoggerFactory loggerFactory )
056    {
057        setRepositoryListeners( listeners );
058        setLoggerFactory( loggerFactory );
059    }
060
061    public DefaultRepositoryEventDispatcher setLoggerFactory( LoggerFactory loggerFactory )
062    {
063        this.logger = NullLoggerFactory.getSafeLogger( loggerFactory, getClass() );
064        return this;
065    }
066
067    public DefaultRepositoryEventDispatcher addRepositoryListener( RepositoryListener listener )
068    {
069        if ( listener == null )
070        {
071            throw new IllegalArgumentException( "repository listener has not been specified" );
072        }
073        this.listeners.add( listener );
074        return this;
075    }
076
077    public DefaultRepositoryEventDispatcher setRepositoryListeners( Collection<RepositoryListener> listeners )
078    {
079        if ( listeners == null )
080        {
081            this.listeners = new ArrayList<RepositoryListener>();
082        }
083        else
084        {
085            this.listeners = listeners;
086        }
087        return this;
088    }
089
090    public void initService( ServiceLocator locator )
091    {
092        setLoggerFactory( locator.getService( LoggerFactory.class ) );
093        setRepositoryListeners( locator.getServices( RepositoryListener.class ) );
094    }
095
096    public void dispatch( RepositoryEvent event )
097    {
098        if ( !listeners.isEmpty() )
099        {
100            for ( RepositoryListener listener : listeners )
101            {
102                dispatch( event, listener );
103            }
104        }
105
106        RepositoryListener listener = event.getSession().getRepositoryListener();
107
108        if ( listener != null )
109        {
110            dispatch( event, listener );
111        }
112    }
113
114    private void dispatch( RepositoryEvent event, RepositoryListener listener )
115    {
116        try
117        {
118            switch ( event.getType() )
119            {
120                case ARTIFACT_DEPLOYED:
121                    listener.artifactDeployed( event );
122                    break;
123                case ARTIFACT_DEPLOYING:
124                    listener.artifactDeploying( event );
125                    break;
126                case ARTIFACT_DESCRIPTOR_INVALID:
127                    listener.artifactDescriptorInvalid( event );
128                    break;
129                case ARTIFACT_DESCRIPTOR_MISSING:
130                    listener.artifactDescriptorMissing( event );
131                    break;
132                case ARTIFACT_DOWNLOADED:
133                    listener.artifactDownloaded( event );
134                    break;
135                case ARTIFACT_DOWNLOADING:
136                    listener.artifactDownloading( event );
137                    break;
138                case ARTIFACT_INSTALLED:
139                    listener.artifactInstalled( event );
140                    break;
141                case ARTIFACT_INSTALLING:
142                    listener.artifactInstalling( event );
143                    break;
144                case ARTIFACT_RESOLVED:
145                    listener.artifactResolved( event );
146                    break;
147                case ARTIFACT_RESOLVING:
148                    listener.artifactResolving( event );
149                    break;
150                case METADATA_DEPLOYED:
151                    listener.metadataDeployed( event );
152                    break;
153                case METADATA_DEPLOYING:
154                    listener.metadataDeploying( event );
155                    break;
156                case METADATA_DOWNLOADED:
157                    listener.metadataDownloaded( event );
158                    break;
159                case METADATA_DOWNLOADING:
160                    listener.metadataDownloading( event );
161                    break;
162                case METADATA_INSTALLED:
163                    listener.metadataInstalled( event );
164                    break;
165                case METADATA_INSTALLING:
166                    listener.metadataInstalling( event );
167                    break;
168                case METADATA_INVALID:
169                    listener.metadataInvalid( event );
170                    break;
171                case METADATA_RESOLVED:
172                    listener.metadataResolved( event );
173                    break;
174                case METADATA_RESOLVING:
175                    listener.metadataResolving( event );
176                    break;
177                default:
178                    throw new IllegalStateException( "unknown repository event type " + event.getType() );
179            }
180        }
181        catch ( Exception e )
182        {
183            logError( e, listener );
184        }
185        catch ( LinkageError e )
186        {
187            logError( e, listener );
188        }
189    }
190
191    private void logError( Throwable e, Object listener )
192    {
193        String msg =
194            "Failed to dispatch repository event to " + listener.getClass().getCanonicalName() + ": " + e.getMessage();
195
196        if ( logger.isDebugEnabled() )
197        {
198            logger.warn( msg, e );
199        }
200        else
201        {
202            logger.warn( msg );
203        }
204    }
205
206}