Go reactive - Manuel Vicente Vivo
- 1. Go Reactive Manuel Vicente Vivo @manuelvicnt
- 2. What is Reactive Programming? Go Reactive @manuelvicnt Programming paradigm based on Propagation of changes Processing data flows Can be used in a Functional style
- 4. Processing Data Flows Output of processing the different flows Source A Source B Source B Modified
- 6. Reactive Extensions C#: Rx.NET Java: RxJava JavaScript: RxJS Scala: RxScala Swift: RxSwift C++: RxCpp Ruby: Rx.rb Python: RxPY Groovy: RxGroovy Kotlin: RxKotlin Android: RxAndroid iOS: RxCocoa Go Reactive @manuelvicnt
- 7. RxJava http://github.com/Netflix/RxJava “ A library for COMPOSING ASYNCHRONOUS and event-based programs using OBSERVABLE SEQUENCES for the Java VM” Go Reactive @manuelvicnt
- 8. Components Go Reactive @manuelvicnt Observables: Emit Items Subscribers: Consume Items Common Methods: onNext onCompleted onError
- 11. Subjects Go Reactive @manuelvicnt Are both an Observable and a Subscriber
- 12. Operators http://rxmarbles.com Go Reactive @manuelvicnt Transformers map, flatMap Filters filter, take, skip Conditions takeWhile Combination concat, zip Aggregate count, toList
- 13. Go Reactive @manuelvicnt Observable Observable Map Operator Observable Zip Operator Observable seen by the Subscriber
- 14. Backpressure Go Reactive @manuelvicnt The Observable is too fast for Subscribers Can happen anywhere in the chain Operators: Throttle Debounce
- 15. Testing Observables Go Reactive @manuelvicnt Create special cases Observable.error() Observable.empty() Observable.never() Use TestSubscriber
- 16. Live Coding https://github.com/manuelvicnt/RxJava-android-structure Fragments Subscribers View Models Subjects Registration API Service Observable UserData Request Manager Observable Login API Service Observable Account API Service Observable Games API Service Observable Authentication Request Manager Observable Retrofit Registration Retrofit Login Retrofit Account Retrofit Games
- 17. Go Reactive @manuelvicnt 1. Registration Retrofit returns Observable 2. Registration API Service propagates the Observable 3. User Auth RM concatenates Login Request 4. User Auth RM gets the Login Observable 5. Subscribers will get this when subscribing to Registration, Registration & Login request will be made and the result will be a Login Response
- 18. Go Reactive @manuelvicnt 1.1 Account Data from Account API Service Observable 3. Subscriber will get the result when both requests come 2. Zip Operator in UserData RM Observable 1.2 Games Data from Games API Service Observable