content: /*
   *
   * 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.bookkeeper.auth;
  
  import java.io.IOException;
  import org.apache.bookkeeper.client.BKException;
  import org.apache.bookkeeper.common.util.ReflectionUtils;
  import org.apache.bookkeeper.conf.ClientConfiguration;
  import org.apache.bookkeeper.conf.ServerConfiguration;
  import org.apache.bookkeeper.proto.BookieConnectionPeer;
  import org.apache.bookkeeper.proto.ClientConnectionPeer;
  
  /**
   * A factory to manage the authentication provider factories.
   */
  public class AuthProviderFactoryFactory {
  
      public static BookieAuthProvider.Factory newBookieAuthProviderFactory(ServerConfiguration conf) throws IOException {
          String factoryClassName = conf.getBookieAuthProviderFactoryClass();
  
          if (factoryClassName == null || factoryClassName.length() == 0) {
              return new AuthenticationDisabledAuthProviderFactory();
          }
  
          BookieAuthProvider.Factory factory = ReflectionUtils.newInstance(factoryClassName,
                                                                           BookieAuthProvider.Factory.class);
          factory.init(conf);
          return factory;
      }
  
      public static ClientAuthProvider.Factory newClientAuthProviderFactory(ClientConfiguration conf) throws IOException {
          String factoryClassName = conf.getClientAuthProviderFactoryClass();
  
          if (factoryClassName == null || factoryClassName.length() == 0) {
              return new NullClientAuthProviderFactory();
          }
  
          ClientAuthProvider.Factory factory = ReflectionUtils.newInstance(factoryClassName,
                                                                           ClientAuthProvider.Factory.class);
          factory.init(conf);
          return factory;
      }
  
      public static final String AUTHENTICATION_DISABLED_PLUGIN_NAME = "AuthDisabledPlugin";
  
      private static class AuthenticationDisabledAuthProviderFactory implements BookieAuthProvider.Factory {
          @Override
          public String getPluginName() {
              return AUTHENTICATION_DISABLED_PLUGIN_NAME;
          }
  
          @Override
          public void init(ServerConfiguration conf) {}
  
          @Override
          public BookieAuthProvider newProvider(BookieConnectionPeer addr,
                                                AuthCallbacks.GenericCallback<Void> completeCb) {
              completeCb.operationComplete(BKException.Code.OK, null);
              return new BookieAuthProvider() {
                  @Override
                  public void process(AuthToken m, AuthCallbacks.GenericCallback<AuthToken> cb) {
                      // any request of authentication for clients is going to be answered with a standard response
                      // the client will d
                      addr.setAuthorizedId(BookKeeperPrincipal.ANONYMOUS);
                      cb.operationComplete(BKException.Code.OK, AuthToken.NULL);
                  }
              };
          }
      }
  
      private static class NullClientAuthProviderFactory implements ClientAuthProvider.Factory {
          @Override
          public String getPluginName() {
              return AUTHENTICATION_DISABLED_PLUGIN_NAME;
          }
  
          @Override
          public void init(ClientConfiguration conf) {}
  
          @Override
          public ClientAuthProvider newProvider(ClientConnectionPeer addr,
                                                AuthCallbacks.GenericCallback<Void> completeCb) {
              addr.setAuthorizedId(BookKeeperPrincipal.ANONYMOUS);
              completeCb.operationComplete(BKException.Code.OK, null);
              return new ClientAuthProvider() {
                  @Override
                  public void init(AuthCallbacks.GenericCallback<AuthToken> cb) {}
                  @Override
                  public void process(AuthToken m, AuthCallbacks.GenericCallback<AuthToken> cb) {}
              };
          }
      }
  }
  