/**

  * Copyright (c) 2012-2014, jcabi.com

  * All rights reserved.

  *

  * Redistribution and use in source and binary forms, with or without

  * modification, are permitted provided that the following conditions

  * are met: 1) Redistributions of source code must retain the above

  * copyright notice, this list of conditions and the following

  * disclaimer. 2) Redistributions in binary form must reproduce the above

  * copyright notice, this list of conditions and the following

  * disclaimer in the documentation and/or other materials provided

  * with the distribution. 3) Neither the name of the jcabi.com nor

  * the names of its contributors may be used to endorse or promote

  * products derived from this software without specific prior written

  * permission.

  *

  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT

  * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND

  * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL

  * THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,

  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED

  * OF THE POSSIBILITY OF SUCH DAMAGE.

  */

 package com.jcabi.aether;

 import com.jcabi.aspects.Immutable;

 import com.jcabi.aspects.Loggable;

 import lombok.EqualsAndHashCode;

 import lombok.ToString;

 import org.apache.maven.repository.internal.DefaultArtifactDescriptorReader;

 import org.apache.maven.repository.internal.DefaultVersionRangeResolver;

 import org.apache.maven.repository.internal.DefaultVersionResolver;

 import org.sonatype.aether.RepositorySystem;

 import org.sonatype.aether.connector.async.AsyncRepositoryConnectorFactory;

 import org.sonatype.aether.connector.file.FileRepositoryConnectorFactory;

 import org.sonatype.aether.connector.wagon.PlexusWagonConfigurator;

 import org.sonatype.aether.connector.wagon.WagonConfigurator;

 import org.sonatype.aether.connector.wagon.WagonProvider;

 import org.sonatype.aether.connector.wagon.WagonRepositoryConnectorFactory;

 import org.sonatype.aether.impl.ArtifactDescriptorReader;

 import org.sonatype.aether.impl.VersionRangeResolver;

 import org.sonatype.aether.impl.VersionResolver;

 import org.sonatype.aether.impl.internal.DefaultRepositorySystem;

 import org.sonatype.aether.impl.internal.DefaultServiceLocator;

 import org.sonatype.aether.spi.connector.RepositoryConnectorFactory;

 /**

  * Builder of {@link RepositorySystem} class.

  *

  * @author Yegor Bugayenko (yegor@tpc2.com)

  * @version $Id$

  * @since 0.1.6

  */

 @Immutable

 @ToString

 @EqualsAndHashCode

 final class RepositorySystemBuilder {

     /**

      * Build it.

      * @return The repo system.

      */

     @Loggable(Loggable.DEBUG)

     public RepositorySystem build() {

         final DefaultServiceLocator locator = new DefaultServiceLocator();

         locator.addService(

             RepositoryConnectorFactory.class,

             FileRepositoryConnectorFactory.class

         );

         locator.addService(

             RepositoryConnectorFactory.class,

             AsyncRepositoryConnectorFactory.class

         );

         locator.addService(

             WagonProvider.class,

             AmazonWagonProvider.class

         );

         locator.addService(

             WagonConfigurator.class,

             PlexusWagonConfigurator.class

         );

         locator.addService(

             RepositoryConnectorFactory.class,

             WagonRepositoryConnectorFactory.class

         );

         locator.addService(

             RepositorySystem.class,

             DefaultRepositorySystem.class

         );

         locator.addService(

             VersionResolver.class,

             DefaultVersionResolver.class

         );

         locator.addService(

             VersionRangeResolver.class,

             DefaultVersionRangeResolver.class

         );

         locator.addService(

             ArtifactDescriptorReader.class,

             DefaultArtifactDescriptorReader.class

         );

         final RepositorySystem system =

             locator.getService(RepositorySystem.class);

         if (system == null) {

             throw new IllegalStateException("failed to get service");

         }

         return system;

     }

 }