/*
    * 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.commons.vfs2.provider.http;
  
  import java.util.Collection;
  
  import org.apache.commons.httpclient.HttpClient;
  import org.apache.commons.httpclient.HttpConnectionManager;
  import org.apache.commons.httpclient.MultiThreadedHttpConnectionManager;
  import org.apache.commons.vfs2.Capability;
  import org.apache.commons.vfs2.FileObject;
  import org.apache.commons.vfs2.FileSystemOptions;
  import org.apache.commons.vfs2.provider.AbstractFileName;
  import org.apache.commons.vfs2.provider.AbstractFileSystem;
  import org.apache.commons.vfs2.provider.GenericFileName;
  
  /**
   * An HTTP file system.
   */
  public class HttpFileSystem extends AbstractFileSystem {
  
      private final HttpClient client;
  
      protected HttpFileSystem(final GenericFileName rootName, final HttpClient client,
              final FileSystemOptions fileSystemOptions) {
          super(rootName, null, fileSystemOptions);
          this.client = client;
      }
  
      /**
       * Adds the capabilities of this file system.
       */
      @Override
      protected void addCapabilities(final Collection<Capability> caps) {
          caps.addAll(HttpFileProvider.CAPABILITIES);
      }
  
      /** @since 2.0 */
      @Override
      public void closeCommunicationLink() {
          if (getClient() != null) {
              final HttpConnectionManager mgr = getClient().getHttpConnectionManager();
              if (mgr instanceof MultiThreadedHttpConnectionManager) {
                  ((MultiThreadedHttpConnectionManager) mgr).shutdown();
              }
          }
      }
  
      /**
       * Creates a file object. This method is called only if the requested file is not cached.
       */
      @Override
      protected FileObject createFile(final AbstractFileName name) throws Exception {
          return new HttpFileObject<>(name, this);
      }
  
      protected HttpClient getClient() {
          return client;
      }
  }