org.apache.maven.mae.conf.MAELibraries Maven / Gradle / Ivy

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/*
 * 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.
 */

package org.apache.maven.mae.conf;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;

import org.apache.log4j.Logger;
import org.apache.maven.mae.conf.ext.ExtensionConfigurationException;
import org.apache.maven.mae.conf.loader.MAELibraryLoader;

public final class MAELibraries
{

    private static final Logger logger = Logger.getLogger( MAEConfiguration.STANDARD_LOG_HANDLE_LOADER );

    public static Collection loadLibraries( final MAEConfiguration embConfig,
                                                        final List loaders )
        throws IOException
    {
        Set libraries = new LinkedHashSet();
        for ( final MAELibraryLoader loader : loaders )
        {
            libraries.addAll( loader.loadLibraries( embConfig ) );
        }

        for ( final MAELibrary library : libraries )
        {
            try
            {
                library.loadConfiguration( embConfig );
            }
            catch ( final ExtensionConfigurationException e )
            {
                if ( logger.isDebugEnabled() )
                {
                    logger.debug( "Failed to load library configuration for: '" + library.getId() + "'. Reason: "
                                      + e.getMessage(), e );
                }
            }
        }

        return Collections.unmodifiableList( new ArrayList( libraries ) );
    }

}