package org.eclipse.aether.transport.http;
   
   /*
    * 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 javax.inject.Inject;
  import javax.inject.Named;
  
  import java.util.Collections;
  import java.util.HashMap;
  import java.util.Map;
  
  import org.eclipse.aether.RepositorySystemSession;
  import org.eclipse.aether.repository.RemoteRepository;
  import org.eclipse.aether.spi.connector.transport.Transporter;
  import org.eclipse.aether.spi.connector.transport.TransporterFactory;
  import org.eclipse.aether.transfer.NoTransporterException;
  
  import static java.util.Objects.requireNonNull;
  
  /**
   * A transporter factory for repositories using the {@code http:} or {@code https:} protocol. The provided transporters
   * support uploads to WebDAV servers and resumable downloads.
   */
  @Named( "http" )
  public final class HttpTransporterFactory
      implements TransporterFactory
  {
      private static final Map<String, ChecksumExtractor> EXTRACTORS;
  
      static
      {
          HashMap<String, ChecksumExtractor> map = new HashMap<>();
          map.put( Nexus2ChecksumExtractor.NAME, new Nexus2ChecksumExtractor() );
          map.put( XChecksumChecksumExtractor.NAME, new XChecksumChecksumExtractor() );
          EXTRACTORS = Collections.unmodifiableMap( map );
      }
  
      private float priority = 5.0f;
  
      private final Map<String, ChecksumExtractor> extractors;
  
      /**
       * Ctor for ServiceLocator.
       */
      @Deprecated
      public HttpTransporterFactory()
      {
          this( EXTRACTORS );
      }
  
      /**
       * Creates an (uninitialized) instance of this transporter factory. <em>Note:</em> In case of manual instantiation
       * by clients, the new factory needs to be configured via its various mutators before first use or runtime errors
       * will occur.
       */
      @Inject
      public HttpTransporterFactory( Map<String, ChecksumExtractor> extractors )
      {
          this.extractors = requireNonNull( extractors );
      }
  
      @Override
      public float getPriority()
      {
          return priority;
      }
  
      /**
       * Sets the priority of this component.
       *
       * @param priority The priority.
       * @return This component for chaining, never {@code null}.
       */
      public HttpTransporterFactory setPriority( float priority )
      {
          this.priority = priority;
          return this;
      }
  
      @Override
      public Transporter newInstance( RepositorySystemSession session, RemoteRepository repository )
          throws NoTransporterException
     {
         requireNonNull( session, "session cannot be null" );
         requireNonNull( repository, "repository cannot be null" );
 
         return new HttpTransporter( extractors, repository, session );
     }
 
 }