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.cassandra.sidecar.handlers;
  
  import java.util.Collections;
  import java.util.Set;
  
  import com.google.inject.Inject;
  import com.google.inject.Singleton;
  import io.vertx.core.http.HttpServerRequest;
  import io.vertx.core.net.SocketAddress;
  import io.vertx.ext.auth.authorization.Authorization;
  import io.vertx.ext.web.RoutingContext;
  import org.apache.cassandra.sidecar.acl.authorization.BasicPermissions;
  import org.apache.cassandra.sidecar.common.request.data.NodeCommandRequestPayload;
  import org.apache.cassandra.sidecar.common.server.StorageOperations;
  import org.apache.cassandra.sidecar.concurrent.ExecutorPools;
  import org.apache.cassandra.sidecar.utils.InstanceMetadataFetcher;
  import org.jetbrains.annotations.NotNull;
  
  import static org.apache.cassandra.sidecar.modules.ApiModule.OK_STATUS;
  
  
  /**
   * Handler for starting or stopping native transport on a Cassandra node.
   * <p>
   * Expects a JSON body:
   * { "state": "start" }  or  { "state": "stop" }
   * </p>
   */
  @Singleton
  public class NativeUpdateHandler extends NodeCommandHandler implements AccessProtected
  {
      @Inject
      public NativeUpdateHandler(InstanceMetadataFetcher metadataFetcher, ExecutorPools executorPools)
      {
          super(metadataFetcher, executorPools, null);
      }
  
      @Override
      public Set<Authorization> requiredAuthorizations()
      {
          return Collections.singleton(BasicPermissions.MODIFY_NATIVE.toAuthorization());
      }
  
      @Override
      protected void handleInternal(RoutingContext context,
                                    HttpServerRequest httpRequest,
                                    @NotNull String host,
                                    SocketAddress remoteAddress,
                                    NodeCommandRequestPayload request)
      {
          StorageOperations storageOps = metadataFetcher.delegate(host).storageOperations();
  
          executorPools.service().runBlocking(() -> {
              switch (request.state())
              {
                  case START:
                      storageOps.startNativeTransport();
                      break;
                  case STOP:
                      storageOps.stopNativeTransport();
                      break;
                  default:
                      throw new IllegalStateException("Unknown state: " + request.state());
              }
          })
                       .onSuccess(ignored -> context.json(OK_STATUS))
                       .onFailure(cause -> processFailure(cause, context, host, remoteAddress, request));
      }
  }
  
  