Cloud agnostic serverless with fn project
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Cloud agnostic serverless with fn project
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Cloud agnostic serverless with fn project
- 1. Cloud Agnostic Serverless with Fn Project Todor Todorov | @totollygeek DevOps Evangelist
- 2. Todor Todorov @totollygeek » .NET developer; » clean code fanatic; » DevOps evangelist; » speaker; » father of 3 boys; » karaoke enthusiast;
- 3. The serverless explained Credits: Matthew Gilliard DIY Bare Metal PaaS K8s-aaS Serverless Hardware OS Hypervisor Virtual OS Container Orchestration Application Code @totollygeek
- 7. @totollygeek
- 8. @totollygeek C# F# JavaScript Java (ver 2.x only) PowerShell (ver 2.x only) Python (ver 2.x only) TypeScript (ver 2.x only) some experimental
- 9. @totollygeek JavaScript Python Java (8, 11) C# (dotnetcore2.1) Go (1.x) Ruby (2.5)
- 12. @totollygeek
- 13. @totollygeek
- 14. What is Fn Project? • Independent open-source serverless compute platform • Not tied to any cloud vendor • Can be run on premises • Supported by Oracle • Containers are primitives • Strong enterprise in mind @totollygeek
- 15. What is a function container? • Sandboxed process • Short running • Event-driven • Stateless (-ish) @totollygeek
- 16. Anatomy of an Fn function • Small chunk of code wrapped in a container • Gets input from http-stream and environment • Sends output to http-stream • Logs to STDERR / syslog @totollygeek
- 17. FDK (Function Development Kit) support @totollygeek Go Java Node.js Python Ruby Officially supported C# Community supported
- 18. The Fn Server • Runs in a container also • Handles as an API gateway • Exposes REST interface • Storing logs @totollygeek
- 19. The Fn CLI • Of course we have a CLI! • Used to interact with Fn Server • Initialization • Deployment • Invocation @totollygeek
- 20. Initialization of functions • Calling fn init to create a boilerplate in a folder • Does not do anything on the server • Boilerplate includes: Dockerfile, func.yaml & code @totollygeek
- 21. Invocation of functions • From the CLI • With HTTP request • From the UI @totollygeek
- 22. How deployment works @totollygeek 1. Bumps function version 2.Builds container 3.Pushes it to registry 4.Creates or update function & trigger in server Your code MyFunc:0.0.2 1 & 2 3 MyFunc:0.0.2 MyFunc:0.0.2 Fn Service 4
- 26. Using it in Kubernetes • Recommended way of deployment for production • Helm chart available on GitHub @totollygeek
- 27. Fn Flow • Building scalable distributed applications out of functions • Flows are functions also • Support complex parallel processes with error handling, which is testable • Flow functions scale as normal functions • Currently supports Java, hopefully more to come @totollygeek
- 28. Fn Flow | Licence plate example @totollygeek Scraper Plate detect Plate detect Plate detect Draw Draw Draw Post to Twitter Post to Twitter Post to Twitter Post to Slack Post to Slack Post to Slack
- 29. Fn Flow | Licence plate example @totollygeek Scraper Plate detect Plate detect Plate detect Draw Draw Draw Post to Twitter Post to Twitter Post to Twitter Post to Slack Post to Slack Post to Slack FlowFuture.invoke() thenCompose() thenCompose() allOf() whenComplete()
- 31. Fn Flow UI @totollygeek Source: https://github.com/fnproject/flow
- 33. Thank you! (●’◡’●) Where to find me: Todor Todorov e: todor@todorov.bg / ttodorov@nemetschek.bg b: www.todorov.bg t: www.twitter.com/totollygeek l: www.linkedin.com/in/totollygeek g: www.github.com/totollygeek
Hinweis der Redaktion
- This is me My tagline from twitter I know what you ask yourself – aren’t you 20? I am 24 years and 120 months old.
- You saw that in every serverless session Because the Gods of serverless demand that explanation You pay just for execution
- Generally you have a Monolith, you break to Microservices Microservices are broken to functions I don’t completely agree, but that is the idea Different mindset
- Most likely this is what you have Face it – monoliths are not going anywhere any time soon This is OK
- When you think about it, it is a bit frustrating
- When you think about it, it is a bit frustrating
- DISCLAIMER: I do not work for Oracle I am not affiliated with Oracle in any way shape or form Views are my own
- Apache 2 Licensed, so you can use it however you want Running bit of your code on demand, based on triggers Anything that is a Linux process can be containerized and used as a function Why reinvent the wheel, when you can use already established tools and libraries For example use a NuGet package in a Function in Google cloud? Or ruby gem in a function in Azure?
- How many of you use containers on daily basis ? In production ? Hidden by other processes by a kernel namespacing mechanism You can run long running containers
- Used to use STDIN and STDOUT, but that was not easily supported by all
- FDKs handle the IN, OUT and Hot function support Recently added C# Still not “official”
- Used to use STDIN and STDOUT, but that was not easily supported by all
- Used to use STDIN and STDOUT, but that was not easily supported by all
- Used to use STDIN and STDOUT, but that was not easily supported by all
- Used to use STDIN and STDOUT, but that was not easily supported by all
- Show fn start Fn Init Fn Deploy Fn Invoke Fn UI
- Completable Future Used for Asynchronous programming in Java Kinda like task based programming in C#
- THANK YOU