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Uploaded byToshiaki Maki
Spring Cloud Function & Project riff #jsug
This document discusses Spring Cloud Function and Project Riff. It provides an overview of serverless computing and functions-as-a-service (FaaS). It introduces Spring Cloud Function as a way to write functions in Spring Boot and deploy them to various FaaS providers. It also describes Project Riff, an open source FaaS platform that runs on Kubernetes and provides event-driven functions through containers and sidecars that connect functions to event brokers. It demonstrates packaging functions as containers and connecting them to brokers through sidecars to handle event streaming and scaling of functions.
Spring Cloud Function & Project riff #jsug
- 1. Spring Cloud Function& Project riff Japan Spring User Group 2018-02-06 Toshiaki Maki (@making) / Pivotal
- 2. • Keynote day2 •https://www.youtube.com/watch? v=mlRSp9Z3zwY • Serverless Spring • https://www.youtube.com/watch? v=mPOl3024R4s Featured Sessions
- 4. CONTAINERS EVENT-DRIVEN FUNCTIONS DATA SERVICES MICROSERVICES Batches MONOLITHIC APPLICATIONS Companies havemany ways to package and run their workloads in the cloud
- 5. Their goal: pickthe right runtime for each workload CONTAINERS EVENT-DRIVEN FUNCTIONS DATA SERVICESMICROSERVICES Batches MONOLITHIC APPLICATIONS IaaS Container Orchestrator (CaaS) Application Platform (PaaS) Serverless Functions (FaaS)
- 8. Why Serverless? 8 1. Narrowly-scopedunits of code, and the simplicity of built-in event integration, contribute to software development efficiencies. 2. Functions which don't consume resources when idle can provide significant resource efficiencies. 3. Applying serverless to distributed computing brings operational efficiencies based on automated event-based scheduling and self- scaling.
- 9. Who is offeringFaaS? Hosted • AWS Lambda • Azure Functions • Google Cloud Functions On-Prem / OSS • riff (https://github.com/projectriff ) • Oracle fn • OpenWhisk • Fission • Kubeless • OpenFaaS
- 10. • Focus onthe implementation of business logic via functions • Decouple the business logic from any specific runtime (HTTP, Message) • Support a uniform programming model across FaaS providers • Run standalone (locally or in a PaaS) • Enable Spring Boot features on FaaS providers Spring Cloud Function
- 11. Spring Cloud Function •FaaS Portable • Run in Spring Boot • REST, Tasks, or Streams https://github.com/spring-cloud/spring-cloud-function
- 12. HTTP Message Functions Spring CloudFunction Web Spring Cloud Function Message Spring Boot
- 13. HTTP Message Functions Spring CloudFunction Adapter Faas Provider
- 14. HTTP Message Functions Spring CloudFunction Adapter Faas Provider Currently • AWS lambda • Azure Function • Apache OpenWhisk are supported
- 15. Java Util Function publicinterface Function<T, R> { R apply(T t); } public interface Consumer<T> { void accept(T t); } public interface Supplier<T> { T get(); }
- 16. Write a function packagefunctions; import java.util.function.Function; public class Greeter implements Function<String, String> { public String apply(String name) { return "Hello " + name; } }
- 17. Spring Cloud Function(Web) <dependency> <groupId>org.springframework.cloud<groupId> <artifactId>spring-cloud-function-web</artifactId> <version>1.0.0.M3</version> </dependency>
- 18. Spring Cloud Function(Message) <dependency> <groupId>org.springframework.cloud<groupId> <artifactId>spring-cloud-function-message</ artifactId> <version>1.0.0.M3</version> </dependency>
- 19. Spring Cloud Function @SpringBootApplication publicclass App { @Bean public Greeter greeter() { return new Greeter(); } public static void main(String[] args) { SpringApplication.run(App.class, args); } }
- 20. Spring Cloud Function @SpringBootApplication @FunctionScan publicclass App { public static void main(String[] args) { SpringApplication.run(App.class, args); } }
- 21. Spring Cloud Function(Web) $ curl localhost:8080/greeter -w 'n' -H "Content-Type: text/plain" -d "JSUG" Hello JSUG
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- 24. riff is forfunctions
- 25. Unless otherwise indicated,these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a Creative Commons Attribution- NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ what is riff? 24 riff provides developers with a service for executing Functions in response to Events. Features ★ event streaming ★ polyglot ★ Kubernetes-native Events f(x) f(x) f(x) Functions f(x) riff
- 26. Unless otherwise indicated,these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a Creative Commons Attribution- NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ 25 🚧 Immediate Instant-on Consistent Immutable Containers Efficient Scale to Zero Choice of Compromises: • Launch Function containers on demand => Slow start • Inject Function code into running containers => Breaks container immutability • Keep Function containers running => Pay for idle resources ICE Want serverless?... pick 2
- 27. Unless otherwise indicated,these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a Creative Commons Attribution- NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ functions are packaged as containers 26 Function Invoker Function Code Container Base Image Function Layer Container Registry
- 28. Unless otherwise indicated,these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a Creative Commons Attribution- NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ functions are packaged as containers 26 Function Invoker Function Code Container Base Image Function Layer Container Registry Currently • Java • JavaScript • Bash • Python are supported
- 29. Unless otherwise indicated,these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a Creative Commons Attribution- NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ sidecars connect functions with event brokers 27 Function Pod Function ContainerSidecar Container Event Broker broker-specific API binder dispatcher invoker function HTTP gRPC stdio pipes
- 30. Unless otherwise indicated,these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a Creative Commons Attribution- NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ sidecars connect functions with event brokers 27 Function Pod Function ContainerSidecar Container Event Broker broker-specific API binder dispatcher invoker function HTTP gRPC stdio pipes + maybe rsocket?
- 31. Unless otherwise indicated,these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a Creative Commons Attribution- NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ 28 functions and topics are Kubernetes resources Function Controller Function YAML - name - input / output topics - artifact / params Topic YAML - name - params KafkaHttp Gateway Topic Controller Sc Fn Pod Sc Fn Pod Sc Fn Pod k8s API
- 32. Unless otherwise indicated,these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a Creative Commons Attribution- NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ functions scale with events riff function controller ★ interacts with K8s API ★ scales functions 0-1 and 1-N ★ monitors event-lag in Kafka 29 Function Controller Event Broker f(x) f(x) f(x) k8s API
- 33. kubectl -n kube-systemcreate serviceaccount tiller kubectl create clusterrolebinding tiller --clusterrole cluster-admin --serviceaccount=kube-system:tiller helm init --service-account=tiller helm repo add riffrepo https://riff-charts.storage.googleapis.com helm repo update Set up helm Installing riff via helm
- 34. helm install riffrepo/riff--name demo --version 0.0.3-rbac --set httpGateway.service.type=NodePort Installing riff via helm Set up riff
- 35.