Hedge The New Serverless Framework By Janne Kujanpää

Transcription

1 Hedge The New Serverless Framework By Janne Kujanpää

2 Introduction

3 INTRODUCTION Who am I Janne Kujanpää Junior Consultant Hedge Developer Siili Solutions www: siili.com 3

4 Hedge

5 HEDGE What is Hedge? Hedge is a platform agnostic ClojureScript framework for deploying ring compatible handlers to various environments with focus on serverless deployments Esko Suomi 5

6 HEDGE That was too many words Platform agnostic Write code and configuration once and deploy to all supported clouds Unified serverless function handlers Clojure CLI tool is written with Clojure CLI commands are Boot tasks which are easy to combine programmatically or in command line (Future feature) Clojure support for JVM FaaS services ClojureScript Function handlers are written with ClojureScript 6

7 HEDGE Teaser $ boot Build and deploy function app(s) Options: -h, --help Print this help info., --stack-name STACK STACK sets name of the stack. -O, --optimizations LEVEL LEVEL sets the optimization level. $ boot <not so interesting output here > Uploading functions zip into bucket Deploying to AWS Stack is ready! API endpoint : 7

8 HEDGE That was too many words Framework Hedge will build, package artifacts and deploy for you Hedge generates wrapper between your handler code and cloud native code Future version of Hedge will contain libraries for other service call abstractions Deployment Hedge will deploy your project Ring compatible handlers Current serverless handler abstraction has been inspired by Ring (Future feature) Use 100 % Ring compatible handlers and support third party middleware 8

9 HEDGE Teaser 1. Implement the handler (ns hedge-test.core) (defn hello [req] "Hello, AWS Helsinki Meetup") 2. Describe your API with EDN {:api { aws-meetup-hello" {:handler hedge-test.core/hello :authorization :anonymous}}} 9

10 HEDGE That was too many words Serverless Yes, please AWS implementation notes Uses Cloudformation with SAM templates Boot and JDK are only required tools. All dependencies are downloaded automatically AWS CLI recommended as extra tool Credential creation Cleaning test deployments 10

11 HEDGE Open source Source code available in GitHub: Gitter chat: Hedge is licensed under the Eclipse Public License

12 HEDGE Why yet another new tool? Clojure(Script) Clojure(Script) is in high demand in Finland and in Siili Solutions Functional programming suits well for stateless serverless functions Platform agnostic One of the main goals of Hedge Code reusability Current tools Serverless Framework not designed for languages with separated build step(s) CLI tools + Cloudformation/ARM templates + scripts for multistage deployments, automated template creation, No, please! It is possible but hard to maintain. Also not platform agnostic. 12

13 The demo

14 HELLO, WORLD! build.boot (set-env! :source-paths #{"src"} :resource-paths #{"resources"} :dependencies '[[siili/boot-hedge "0.0.4" :scope "test"] [siili/hedge "0.0.4"]]) (require '[boot-hedge.aws.core :refer :all]) 14

15 HEDGE The Handler Code 1. Implement the handler (ns hedge-test.core) (defn hello [req] "Hello, AWS Helsinki Meetup") 2. Describe your API with EDN {:api {" aws-meetup-hello " {:handler hedge-test.core/hello :authorization :anonymous}}} 15

16 DEMO Basic command line usage 1. To deploy project run boot 2. To update stack run same command again 16

17 DEMO Live demo Live demo? 17

18 Future

19 FUTURE Upcoming features YES! Hedge itself Timers and Queues Persistent storage Proper Node module support Clojure Single function updates YES! More platforms Docker Ring Cloud? Maybe? Live REPL Lumo support 19

20 FUTURE Questions? Questions? 20

21 SECTION TITLE Links Ring handler specification: EDN specification: Spikes : Demo repository: 21