content: /*
   * Licensed 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.stream.storage.impl.metadata;
  
  import java.util.concurrent.CompletableFuture;
  import org.apache.bookkeeper.stream.proto.storage.CreateNamespaceRequest;
  import org.apache.bookkeeper.stream.proto.storage.CreateNamespaceResponse;
  import org.apache.bookkeeper.stream.proto.storage.StatusCode;
  import org.apache.bookkeeper.stream.storage.impl.AsyncOperationProcessor;
  
  /**
   * The operation process for creating namespace.
   */
  class CreateNamespaceProcessor
      extends AsyncOperationProcessor<CreateNamespaceRequest, CreateNamespaceResponse, RootRangeStoreImpl> {
  
      public static CreateNamespaceProcessor of() {
          return INSTANCE;
      }
  
      private static final CreateNamespaceProcessor INSTANCE = new CreateNamespaceProcessor();
  
      private CreateNamespaceProcessor() {
      }
  
      @Override
      protected StatusCode verifyRequest(RootRangeStoreImpl state,
                                         CreateNamespaceRequest request) {
          return state.verifyCreateNamespaceRequest(request);
      }
  
      @Override
      protected CreateNamespaceResponse failRequest(StatusCode code) {
          return CreateNamespaceResponse.newBuilder()
              .setCode(code)
              .build();
      }
  
      @Override
      protected CompletableFuture<CreateNamespaceResponse> doProcessRequest(RootRangeStoreImpl state,
                                                                            CreateNamespaceRequest request) {
          return state.doProcessCreateNamespaceRequest(request);
      }
  }
  