Sources/SparkConnect/FlightDescriptor.swift

// 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.

import Foundation

/// @nodoc
public class FlightDescriptor {
  public enum DescriptorType {
    case unknown
    case path
    case cmd
  }

  public let type: FlightDescriptor.DescriptorType
  public let cmd: Data
  public let paths: [String]

  init(_ descriptor: Arrow_Flight_Protocol_FlightDescriptor) {
    self.type = descriptor.type == .cmd ? .cmd : .path
    self.cmd = descriptor.cmd
    self.paths = descriptor.path
  }

  public init(cmd: Data) {
    self.type = .cmd
    self.cmd = cmd
    self.paths = [String]()
  }

  public init(paths: [String]) {
    self.type = .path
    self.cmd = Data()
    self.paths = paths
  }

  func toProtocol() -> Arrow_Flight_Protocol_FlightDescriptor {
    var descriptor = Arrow_Flight_Protocol_FlightDescriptor()
    descriptor.type = self.type == .cmd ? .cmd : .path
    descriptor.cmd = self.cmd
    descriptor.path = self.paths
    return descriptor
  }
}