/*
 * 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 java.util.concurrent.TimeUnit;

import io.grpc.stub.AbstractStub;

/**
 * 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.
   */
  interface GrpcCallOption extends CallOption {
    <T extends AbstractStub<T>> T wrapStub(T stub);
  }
}
