A command pattern implementation written in Swift


Keywords
block, cancel, closure, command, concurrency, current, dispatcher, dispatchqueue, error, execute, execution, kommand, kommander, main, operationqueue, pattern, success, swift, task, thread
License
MIT
Install
pod try Kommander

Documentation

Kommander

Twitter Version License Platform Swift Carthage compatible Swift Package Manager Compatible Build Status Documentation Downloads Help Contribute to Open Source

Kommander is a Swift library to manage the task execution in different threads. Through the definition a simple but powerful concept, Kommand.

Inspired on the Java library Kommander from Wokdsem.

Kommander

🌟 Features

  • Make kommand or multiple kommands
  • Execute kommand or multiple kommands
  • Cancel kommand or multiple kommands
  • Retry kommand or multiple kommands
  • Set kommand success closure
  • Set kommand error closure
  • Set kommand error closure specifying Error type
  • Main thread dispatcher
  • Current thread dispatcher
  • Custom OperationQueue dispatcher
  • Execute single or multiple Operation
  • Execute sequential or concurrent closures
  • Execute DispatchWorkItem
  • Kommand state
  • iOS compatible
  • watchOS compatible
  • tvOS compatible
  • macOS compatible
  • Swift 4 version
  • Swift 3 version
  • Swift 2 version
  • Objective-C version

📲 Installation

Kommander is available through CocoaPods. To install it, simply add the following line to your Podfile:

pod 'Kommander'

For Swift 3 compatibility use:

pod 'Kommander', '~> 0.7'

For Swift 2 compatibility use:

pod 'Kommander', :git => 'https://github.com/intelygenz/Kommander-iOS.git', :tag => '0.3.0-swift2'

For Objective-C compatibility use:

pod 'Kommander', :git => 'https://github.com/intelygenz/Kommander-iOS.git', :tag => '0.2.3-objc'

Or you can install it with Carthage:

github "intelygenz/Kommander-iOS"

Or install it with Swift Package Manager:

dependencies: [
    .package(url: "https://github.com/intelygenz/Kommander-iOS.git")
]

🐒 Usage

Making, executing, cancelling and retrying Kommands:

Kommander().make {
    // Your code here
}.execute()
Kommander().make {
    // Your code here
}.execute(after: .seconds(2))
Kommander().make {
    return "Your string"
}.success { yourString in
    print(yourString)
}.execute()
Kommander().make {
    throw CocoaError(.featureUnsupported)
}.error { error in
    print(String(describing: error!))
}.execute()
Specify Error type:
Kommander().make {
    throw MyError.error
}.error(MyError.self) { error in
    // error is MyError type.
}.execute()
Retry after cancellation:
let kommand = Kommander().make { () -> Any? in
    // Your code here
}.success { result in
    // Your success handling here
}.error { error in
    // Your error handling here
}.execute()

kommand.cancel()

kommand.retry()
Retry after failure:
let kommand = Kommander().make { () -> Any? in
    // Your code here
}.error { error in
    // Your error handling here
}.retry { error, executionCount in
    return executionCount < 2
}.execute()

Creating Kommanders:

Kommander(deliverer: Dispatcher = .current, executor: Dispatcher = .default)

Kommander(deliverer: Dispatcher = .current, name: String, qos: QualityOfService = .default, maxConcurrentOperations: Int = .default)
Shortcuts:
Kommander.main

Kommander.current

Kommander.default

Kommander.userInteractive

Kommander.userInitiated

Kommander.utility

Kommander.background

Creating Dispatchers:

CurrentDispatcher()

MainDispatcher()

Dispatcher(name: String, qos: QualityOfService = .default, maxConcurrentOperations: Int = .default)
Shortcuts:
Dispatcher.main

Dispatcher.current

Dispatcher.default

Dispatcher.userInteractive

Dispatcher.userInitiated

Dispatcher.utility

Dispatcher.background

❤️ Etc.

  • Contributions are very welcome.
  • Attribution is appreciated (let's spread the word!), but not mandatory.

👨‍💻 Authors

alexruperez, alejandro.ruperez@intelygenz.com

juantrias, juan.trias@intelygenz.com

RobertoEstrada, roberto.estrada@intelygenz.com

👮‍♂️ License

Kommander is available under the MIT license. See the LICENSE file for more info.