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.integration.tests;
  
  import java.nio.charset.StandardCharsets;
  import java.time.Instant;
  import java.time.temporal.ChronoUnit;
  import java.util.Arrays;
  import java.util.Collections;
  import java.util.List;
  import org.apache.arrow.flight.FlightDescriptor;
  import org.apache.arrow.flight.FlightEndpoint;
  import org.apache.arrow.flight.FlightInfo;
  import org.apache.arrow.flight.NoOpFlightProducer;
  import org.apache.arrow.flight.PollInfo;
  import org.apache.arrow.flight.Ticket;
  import org.apache.arrow.vector.types.Types;
  import org.apache.arrow.vector.types.pojo.Field;
  import org.apache.arrow.vector.types.pojo.Schema;
  
  /** Test PollFlightInfo. */
  class PollFlightInfoProducer extends NoOpFlightProducer {
    static final byte[] POLL_DESCRIPTOR = "poll".getBytes(StandardCharsets.UTF_8);
  
    @Override
    public PollInfo pollFlightInfo(CallContext context, FlightDescriptor descriptor) {
      Schema schema =
          new Schema(
              Collections.singletonList(
                  Field.notNullable("number", Types.MinorType.UINT4.getType())));
      List<FlightEndpoint> endpoints =
          Collections.singletonList(
              new FlightEndpoint(new Ticket("long-running query".getBytes(StandardCharsets.UTF_8))));
      FlightInfo info = new FlightInfo(schema, descriptor, endpoints, -1, -1);
      if (descriptor.isCommand() && Arrays.equals(descriptor.getCommand(), POLL_DESCRIPTOR)) {
        return new PollInfo(info, null, 1.0, null);
      } else {
        return new PollInfo(
            info,
            FlightDescriptor.command(POLL_DESCRIPTOR),
            0.1,
            Instant.now().plus(10, ChronoUnit.SECONDS));
      }
    }
  }
  