backgroundjob.swift

class BackgroundJobCreator: JobCreator {

  func create(type: String, params: [String : Any]?)->Job {
    return SendTweetJob(params:[:])
  }
}

class SendTweetJob: Job {
    
    // Type to know which Job to return in job creator
    static let type = "SendTweetJob"
    // Param
    private let tweet: [String: Any]

    required init(params: [String: Any]) {
        // Receive params from JobBuilder.with()
        self.tweet = params
    }

    func onRun(callback: JobResult) {
        
            callback.done(.success)
    }

    func onRetry(error: Error) -> RetryConstraint {
        // Check if error is non fatal
        return RetryConstraint.cancel
    }

    func onRemove(result: JobCompletion) {
        // This job will never run anymore
        switch result {
            case .success:
                // Job success
            break
            
            case .fail(let error):
                // Job fail
            break
       
        }
    }
}