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.bifromq.sessiondict.server;
  
  import org.apache.bifromq.baserpc.server.ResponsePipeline;
  import io.grpc.stub.StreamObserver;
  import java.util.Optional;
  import java.util.concurrent.CompletableFuture;
  import org.apache.bifromq.sessiondict.rpc.proto.ExistReply;
  import org.apache.bifromq.sessiondict.rpc.proto.ExistRequest;
  import org.apache.bifromq.type.ClientInfo;
  
  class SessionExistPipeline extends ResponsePipeline<ExistRequest, ExistReply> {
      private final ISessionRegistry sessionRegistry;
  
      public SessionExistPipeline(ISessionRegistry sessionRegistry, StreamObserver<ExistReply> responseObserver) {
          super(responseObserver);
          this.sessionRegistry = sessionRegistry;
      }
  
      @Override
      protected CompletableFuture<ExistReply> handleRequest(String tenantId, ExistRequest request) {
          ExistReply.Builder respBuilder = ExistReply.newBuilder()
              .setReqId(request.getReqId())
              .setCode(ExistReply.Code.OK);
          for (ExistRequest.Client client : request.getClientList()) {
              Optional<ClientInfo> clientOpt = sessionRegistry.get(tenantId, client.getUserId(), client.getClientId());
              respBuilder.addExist(clientOpt.isPresent());
          }
          return CompletableFuture.completedFuture(respBuilder.build());
      }
  }
  