001package org.apache.maven.toolchain;
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.Collections;
024import java.util.HashMap;
025import java.util.List;
026import java.util.Map;
027
028import org.apache.maven.execution.MavenSession;
029import org.apache.maven.plugin.descriptor.PluginDescriptor;
030import org.apache.maven.project.MavenProject;
031import org.apache.maven.toolchain.model.ToolchainModel;
032import org.codehaus.plexus.component.annotations.Component;
033import org.codehaus.plexus.component.annotations.Requirement;
034import org.codehaus.plexus.logging.Logger;
035
036/**
037 * @author mkleint
038 */
039@Component( role = ToolchainManager.class )
040public class DefaultToolchainManager
041    implements ToolchainManager
042{
043    @Requirement
044    Logger logger;
045
046    @Requirement( role = ToolchainFactory.class )
047    Map<String, ToolchainFactory> factories;
048    
049    @Override
050    public Toolchain getToolchainFromBuildContext( String type, MavenSession session )
051    {
052        Map<String, Object> context = retrieveContext( session );
053
054        ToolchainModel model = (ToolchainModel) context.get( getStorageKey( type ) );
055
056        if ( model != null )
057        {
058            List<Toolchain> toolchains = selectToolchains( Collections.singletonList( model ), type, null );
059            
060            if ( !toolchains.isEmpty() )
061            {
062                return toolchains.get( 0 );
063            }
064        }
065
066        return null;
067    }
068
069    @Override
070    public List<Toolchain> getToolchains( MavenSession session, String type, Map<String, String> requirements )
071    {
072        List<ToolchainModel> models = session.getRequest().getToolchains().get( type );
073
074        return selectToolchains( models, type, requirements );
075    }
076
077    private List<Toolchain> selectToolchains( List<ToolchainModel> models, String type,
078                                              Map<String, String> requirements )
079    {
080        List<Toolchain> toolchains = new ArrayList<Toolchain>();
081
082        if ( models != null )
083        {
084            ToolchainFactory fact = factories.get( type );
085
086            if ( fact == null )
087            {
088                logger.error( "Missing toolchain factory for type: " + type
089                    + ". Possibly caused by misconfigured project." );
090            }
091            else
092            {
093                for ( ToolchainModel model : models )
094                {
095                    try
096                    {
097                        ToolchainPrivate toolchain = fact.createToolchain( model );
098                        if ( requirements == null || toolchain.matchesRequirements( requirements ) )
099                        {
100                            toolchains.add( toolchain );
101                        }
102                    }
103                    catch ( MisconfiguredToolchainException ex )
104                    {
105                        logger.error( "Misconfigured toolchain.", ex );
106                    }
107                }
108            }
109        }
110        return toolchains;
111    }
112    
113    Map<String, Object> retrieveContext( MavenSession session )
114    {
115        Map<String, Object> context = null;
116
117        if ( session != null )
118        {
119            PluginDescriptor desc = new PluginDescriptor();
120            desc.setGroupId( PluginDescriptor.getDefaultPluginGroupId() );
121            desc.setArtifactId( PluginDescriptor.getDefaultPluginArtifactId( "toolchains" ) );
122
123            MavenProject current = session.getCurrentProject();
124
125            if ( current != null )
126            {
127                //TODO: why is this using the context
128                context = session.getPluginContext( desc, current );
129            }
130        }
131
132        return ( context != null ) ? context : new HashMap<String, Object>();
133    }
134
135    public static final String getStorageKey( String type )
136    {
137        return "toolchain-" + type; // NOI18N
138    }
139
140}