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