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.arrow.flight;
  
  import io.grpc.stub.AbstractStub;
  import java.util.concurrent.TimeUnit;
  
  /** Common call options. */
  public class CallOptions {
    public static CallOption timeout(long duration, TimeUnit unit) {
      return new Timeout(duration, unit);
    }
  
    static <T extends AbstractStub<T>> T wrapStub(T stub, CallOption[] options) {
      for (CallOption option : options) {
        if (option instanceof GrpcCallOption) {
          stub = ((GrpcCallOption) option).wrapStub(stub);
        }
      }
      return stub;
    }
  
    private static class Timeout implements GrpcCallOption {
      long timeout;
      TimeUnit timeoutUnit;
  
      Timeout(long timeout, TimeUnit timeoutUnit) {
        this.timeout = timeout;
        this.timeoutUnit = timeoutUnit;
      }
  
      @Override
      public <T extends AbstractStub<T>> T wrapStub(T stub) {
        return stub.withDeadlineAfter(timeout, timeoutUnit);
      }
    }
  
    /** CallOptions specific to GRPC stubs. */
    public interface GrpcCallOption extends CallOption {
      <T extends AbstractStub<T>> T wrapStub(T stub);
    }
  }
  