Sameera Jayasoma presented on Ballerina, a programming language for integration and microservices. Ballerina aims to make every developer an integration developer by providing abstractions for consuming and providing services. It addresses challenges like transactions, events, and protocol handling that are common in integration. The Ballerina platform includes tools for developing, testing, running and deploying Ballerina programs.

1. Sameera Jayasoma
Architect - Ballerina Platform
Senior Director at WSO2
Could Native Middleware as a programming Language
WSO2 Integration Summit - San Francisco 2019
@sameerajayasoma

3. Everything is
An Endpoint
Functions
APIs
Data
SaaS apps
Legacy apps
Devices

4. Bazillion SaaS services to use
Everything you make is useful to someone else
Need for agility

5. https://en.wikipedia.org/wiki/Middleware

6. Middleware is dead,
Middleware is everywhere

7. Middleware is disappearing:
- in to code
- in to infrastructure

8. Makes
Every Developer
an Integration
Developer.

10. ● It isn’t easy
● The challenges include
○ Compensation
○ Transactions
○ Events
○ Circuit breakers
○ Discovery
○ Protocol handling
○ Various message formats
● These are all hard problems

11. ● Many messages are exchanged between endpoints
● Typically schemas describe these messages
● Data binding converts these messages into types/values in programming
languages
● Creates a lot of friction for application that exchange messages

12. ● Requires a lightweight thread implementation to maximize the usage of
computing resources
● Software unit of concurrency (thread) vs domain’s unit of concurrency
(user, transaction, interaction)
● Inefficient to match the scale of domain’s unit of concurrency with kernel
threads.

13. https://cr.openjdk.java.net/~rpressler/loom/Loom-Proposal.html

14. Microservices with BallerinaCould Native Middleware as a programming Language

15. ● Works for Mort, Elvis and Einstein
● Familiar
● Pragmatic
○ not a research language
● Readability
● Design language together with platform

16. Demo

17. Hello World

18. caller hello
GET
Hello World

19. Annotations

20. caller hello
POST (name)
Hello, name!

22. caller hello
POST (status)
response
twitter
tweet (status)
response

23. Based on sequence diagrams

25. Ballerina Platform

26. ● Collection of tools that helps you to develop, build, test, run and deploy
programs written in Ballerina.
○ A language specification
○ Compiler and runtime
○ A set of standard libraries
○ Ballerina tool — the build tool++
○ A centralized module management architecture
○ LSP implementation, IDE plugins
○ and many more…

27. Batteries Included

29. ○ Test
○ Documentation
○ Swagger tooling
○ gRPC tooling
○ Secret encryption
○ Docker / Kubernetes integration
○ Istio integration

31. Ballerina fits into your ecosystem

32. Serverless

36. Observability

40. Continuous Integration

42. https://ballerina.io/learn/by-example/

43. https://github.com/ballerina-platform/ballerina-spec

44. ● Ballerina is an attempt to build a modern application development
programming language
○ For a future with lots of network endpoints
● Abstractions for providing and consuming services
● Type system is designed to make network data processing easier
● Framework to encourage more secure code
● Fully open source and developed openly

45. Learn more
Open source
Get support
http://ballerina.io
Stack Overflow #ballerina tag
Contact me ;-) sameera@wso2.com @sameerajayasoma