ImageProcessor.swift

struct ImageProcessor {
  static func process(identifier: Int) async throws -> Data {
    // Read image data
    try await Task.sleep(nanoseconds: UInt64(identifier) * UInt64(1e8))
    try Task.checkCancellation()
    // Simulate processing the data and transforming it
    try await Task.sleep(nanoseconds: UInt64(1e8))
    try Task.checkCancellation()
    
    if identifier != 2 {
      print("Success: \(identifier)")
      return Data()
    } 
    else {
      print("Failing: \(identifier)")
      throw ProcessingError.invalidData
    }
  }
        
  enum ProcessingError: Error {
    case invalidData
  }
}