Learning RSocket Using RSC
•
0 likes•314 views
SpringOne 2021 Session Title: Learning RSocket Using RSC Speaker: Toshiaki Maki, Staff Cloud Native Architect at VMware
Recommended
More Related Content
What's hot
What's hot (20)
Similar to Learning RSocket Using RSC
Similar to Learning RSocket Using RSC (20)
More from VMware Tanzu
More from VMware Tanzu (20)
Recently uploaded
Recently uploaded (20)
Learning RSocket Using RSC
- 1. Learning RSocket Using RSC September 1–2, 2021 springone.io Toshiaki Maki (@making) Staff Cloud Native Architect at VMware https://github.com/making/learning-rsocket-using-rsc 1
- 2. What is RSocket? ● RSocket is a binary protocol for multiplexed, bidirectional over TCP or WebSocket ○ https://rsocket.io ○ Layer 5 or 6 in the OSI model / Application layer in the TCP/IP model ● 4 interaction models ○ Request Response ○ Request Stream ○ Request Channel ○ Fire and Forget ● Support Reactive Streams semantics (Backpressure) ● A Reactive Foundation project ○ https://www.reactive.foundation 2
- 3. FAQ: What’s different from gRPC? 3 Transport Agnostic (TCP / WebSocket / …) RSocket Protocol Message Format Agnostic (JSON / CBOR / Protocol Buffers / ...) Programming Model Agnostic (Messaging / RPC / Functional Style) Language Agnostic (Java / Kotlin / JavaScript / Swift / ...) HTTP/2 Protocol Buffers RPC Style Language Agnostic (Go / C++ / Java / Python / C# / ...) Transport Message Format Programming Model Language
- 4. Spring ❤ RSocket Spring Framework provides a “Messaging Style” and “Functional Style” programming model for RSocket And a convenient RSocket Client like WebClient for Spring WebFlux https://docs.spring.io/spring-framework/docs/current/reference/html/web-reactive.html#rsocket 4 @Controller public class UpperCase { @MessageMapping("uc") String uc(@Payload String s) { return s.toUpperCase(); } } RSocketRequester requester = RSocketRequester.builder() .tcp("localhost", 7000); Mono<String> response = requester.route("uc") .data("Hello") .retrieveMono(String.class); Server Client
- 5. What is RSC? RSC is a CLI for RSocket like curl for HTTP. https://github.com/making/rsc Uses RSocket Java SDK and built with GraalVM into a native image. Available for Mac, Linux and Windows. Very convenient for testing RSocket Server API. 5 $ brew install making/tap/rsc $ rsc --route=uc --data=Hello tcp://localhost:7000 HELLO
- 6. 4 Interaction Models ● Request Response … send one message and receive one back ● Request Stream … send one message and receive a stream of messages ● Request Channel … send streams of messages in both directions ● Fire and Forget … send a one-way message 6
- 7. Request Response Request Response Payload Payload send one message and receive one back 7
- 8. Request Stream Request Stream Payload Payload Payload Payload … Payload send one message and receive a stream of messages back 8
- 9. Request Channel Request Channel Payload Payload Payload Payload … Payload Payload … send streams of messages in both directions 9
- 10. Fire and Forget Fire and Forget Payload send a one-way message 10
- 11. DEMO: 4 interaction models 11
- 12. RSocket Features Demo ● Reactive Streams (Back Pressure) ● Session Resumption ● Client Responder ● Authentication ● Tracing 12
- 13. Reactive Streams (Back Pressure support) Request_N N=3 Payload Payload Payload Request_N N=2 Payload Payload ... ... 13
- 14. Demo: Reactive Streams (Back Pressure support) 14
- 15. Session Resumption Request Stream E D C B A ... Connectivity Lost 15
- 16. Session Resumption Resume G F E D C ... Backpressure works, so stream data generation will stop until the connection is resumed. 16
- 17. DEMO: Session Resumption RSocket Server RSC socat Listens on port 7000 rsc --route ... --stream --resume 180 --delayElements 1000 --limitRate 1 tcp://localhost:7002 socat -d TCP-LISTEN:7002,fork,reuseaddr TCP:localhost:7000 17 Port 7002 Port 7000
- 20. Client Responder Request Response Payload Payload Requester Responder Client Server Server can be a Requester! 2 0
- 21. Firewall Client Responder Request Response Payload Payload Requester Responder Client Server 21 ✅ Allow ❌ Deny ✅ ✅ inside outside
- 22. DEMO: Client Responder 2 2 REQUEST: SpringOne RESPONSE: Hello SpringOne! Responder Client Requester Server Server initiates a request response flow
- 24. Authentication RSocket protocol supports Simple Authentication ( username / password ) and Bearer Token Authentication https://github.com/rsocket/rsocket/blob/master/Extensions/Security/Authentication.md Spring Security supports RSocket Authentication 2 4
- 26. Tracing RSocket protocol supports Zipkin Tracing (B3 Format). https://github.com/rsocket/rsocket/blob/master/Extensions/Tracing-Zipkin.md Spring Cloud Sleuth ( since 3.1 🆕 ) provides an instrumentation for RSocket Tracing. 2 6
- 27. DEMO: Tracing 27
- 28. Wrap up ● RSocket is a binary protocol for multiplexed, bidirectional over TCP or WebSocket ● Spring ❤ RSocket ● RSC is a CLI for RSocket like curl for HTTP. ● 4 interaction models ○ Request Response ○ Request Stream ○ Request Channel ○ Fire and Forget ● Highlighted features ○ Backpressure ○ Session Resumption ○ Client Responder ○ Authentication ○ Tracing 2 8
- 29. https://github.com/making/learning-rsocket-using-rsc Event Sourcing with RSocket—Now We’re Talking! - Steven van Beelen Collaborative Applications at Scale with RSocket - Sergey Tselovalnikov Multiplatform Apps with Spring, Kotlin, and RSocket - Anton Arhipov, Oleh Dokuka #springone @SpringOne Stay Connected.