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.stream.cli.commands.namespace;
  
  import static com.google.common.base.Preconditions.checkArgument;
  import static org.apache.bookkeeper.common.concurrent.FutureUtils.result;
  import static org.apache.bookkeeper.stream.cli.Commands.OP_CREATE;
  import static org.apache.bookkeeper.stream.protocol.ProtocolConstants.DEFAULT_STREAM_CONF;
  
  import org.apache.bookkeeper.clients.admin.StorageAdminClient;
  import org.apache.bookkeeper.clients.exceptions.NamespaceExistsException;
  import org.apache.bookkeeper.stream.cli.commands.AdminCommand;
  import org.apache.bookkeeper.stream.cli.commands.namespace.CreateNamespaceCommand.Flags;
  import org.apache.bookkeeper.stream.proto.NamespaceConfiguration;
  import org.apache.bookkeeper.stream.proto.NamespaceProperties;
  import org.apache.bookkeeper.tools.common.BKFlags;
  import org.apache.bookkeeper.tools.framework.CliFlags;
  import org.apache.bookkeeper.tools.framework.CliSpec;
  
  /**
   * Command to create a namespace.
   */
  public class CreateNamespaceCommand extends AdminCommand<Flags> {
  
      private static final String NAME = OP_CREATE;
      private static final String DESC = "Create a namespace";
  
      /**
       * Flags for the create namespace command.
       */
      public static class Flags extends CliFlags {
      }
  
      public CreateNamespaceCommand() {
          super(CliSpec.<Flags>newBuilder()
              .withName(NAME)
              .withDescription(DESC)
              .withFlags(new Flags())
              .withArgumentsUsage("<namespace-name>")
              .build());
      }
  
      @Override
      protected void run(StorageAdminClient admin,
                         BKFlags globalFlags,
                         Flags flags) throws Exception {
          checkArgument(!flags.arguments.isEmpty(),
              "Namespace name is not provided");
  
          String namespaceName = flags.arguments.get(0);
  
          try {
              NamespaceProperties nsProps = result(
                  admin.createNamespace(
                      namespaceName,
                      NamespaceConfiguration.newBuilder()
                          .setDefaultStreamConf(DEFAULT_STREAM_CONF)
                          .build()));
              spec.console().println("Successfully created namespace '" + namespaceName + "':");
              spec.console().println(nsProps);
          } catch (NamespaceExistsException nee) {
              spec.console().println("Namespace '" + namespaceName + "' already exists");
          }
      }
  
  }
  