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package org.apache.maven.plugin.internal;
/*
* 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.util.Collection;
import java.util.IdentityHashMap;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.Map;
import org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.resolver.ResolutionListener;
import org.apache.maven.artifact.resolver.filter.ArtifactFilter;
import org.apache.maven.artifact.versioning.VersionRange;
/**
* Assists in detecting wagon providers brought into the plugin class path via legacy Maven core artifacts (e.g.
* maven-core:2.0.6) and excluding them. A plugin should be able to explicitly declare dependencies on specific wagons
* for its use. However, the (old) wagons pulled in transitively via legacy Maven core artifacts are usually not
* intended as dependencies and more importantly screw up artifact resolution because they would get preferred over the
* core wagon versions. This is a hack to provide backward-compat with Maven 2 (MNG-4528, MNG-4561).
*
* @since 3.0
* @author Benjamin Bentmann
*/
class PluginDependencyResolutionListener
implements ResolutionListener
{
private ArtifactFilter coreFilter;
private LinkedList<Artifact> coreArtifacts = new LinkedList<Artifact>();
private Artifact wagonProvider;
private Map<Artifact, Object> bannedArtifacts = new IdentityHashMap<Artifact, Object>();
public PluginDependencyResolutionListener( ArtifactFilter coreFilter )
{
this.coreFilter = coreFilter;
}
public void removeBannedDependencies( Collection<Artifact> artifacts )
{
if ( !bannedArtifacts.isEmpty() && artifacts != null )
{
for ( Iterator<Artifact> it = artifacts.iterator(); it.hasNext(); )
{
Artifact artifact = it.next();
if ( bannedArtifacts.containsKey( artifact ) )
{
it.remove();
}
}
}
}
public void startProcessChildren( Artifact artifact )
{
if ( wagonProvider == null )
{
if ( isLegacyCoreArtifact( artifact ) )
{
coreArtifacts.addFirst( artifact );
}
else if ( !coreArtifacts.isEmpty() && isWagonProvider( artifact ) )
{
wagonProvider = artifact;
bannedArtifacts.put( artifact, null );
}
}
}
private boolean isLegacyCoreArtifact( Artifact artifact )
{
String version = artifact.getVersion();
return version != null && version.startsWith( "2." ) && !coreFilter.include( artifact );
}
public void endProcessChildren( Artifact artifact )
{
if ( wagonProvider == artifact )
{
wagonProvider = null;
}
else if ( coreArtifacts.peek() == artifact )
{
coreArtifacts.removeFirst();
}
}
public void includeArtifact( Artifact artifact )
{
if ( wagonProvider != null )
{
bannedArtifacts.put( artifact, null );
}
}
private boolean isWagonProvider( Artifact artifact )
{
if ( "org.apache.maven.wagon".equals( artifact.getGroupId() ) )
{
return artifact.getArtifactId().startsWith( "wagon-" );
}
return false;
}
public void manageArtifact( Artifact artifact, Artifact replacement )
{
}
public void omitForCycle( Artifact artifact )
{
}
public void omitForNearer( Artifact omitted, Artifact kept )
{
}
public void restrictRange( Artifact artifact, Artifact replacement, VersionRange newRange )
{
}
public void selectVersionFromRange( Artifact artifact )
{
}
public void testArtifact( Artifact node )
{
}
public void updateScope( Artifact artifact, String scope )
{
}
public void updateScopeCurrentPom( Artifact artifact, String ignoredScope )
{
}
}
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