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.sdk.fn.server;
  
  import org.apache.beam.vendor.grpc.v1p69p0.io.grpc.BindableService;
  
  /** An interface sharing common behavior with services used during execution of user Fns. */
  public interface FnService extends AutoCloseable, BindableService {
    /**
     * {@inheritDoc}.
     *
     * <p>There should be no more calls to any service method by the time a call to {@link #close()}
     * begins. Specifically, this means that a {@link
     * org.apache.beam.vendor.grpc.v1p69p0.io.grpc.Server} that this service is bound to should have
     * completed a call to the {@link org.apache.beam.vendor.grpc.v1p69p0.io.grpc.Server#shutdown()}
     * method, and all future incoming calls will be rejected.
     */
    @Override
    void close() throws Exception;
  }
  