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.beam.runners.fnexecution.control;
  
  import java.util.concurrent.CompletionStage;
  import org.apache.beam.model.fnexecution.v1.BeamFnApi;
  
  /**
   * Interface for any function that can handle a Fn API {@link BeamFnApi.InstructionRequest}. Any
   * error responses will be converted to exceptionally completed futures.
   */
  public interface InstructionRequestHandler extends AutoCloseable {
    void registerProcessBundleDescriptor(BeamFnApi.ProcessBundleDescriptor processBundleDescriptor);
  
    CompletionStage<BeamFnApi.InstructionResponse> handle(BeamFnApi.InstructionRequest request);
  }
  