Ballerina (programming language)

Ballerina

Designed by	Sanjiva Weerawarana, James Clark, Sameera Jayasoma, Hasitha Aravinda, Srinath Perera, Frank Leymann and WSO2[1]
Developer	WSO2
First appeared	2017
Typing discipline	Structural, strong, static, inferred
OS	Cross-platform
License	Apache2 License[2]
Website	ballerina.io
Influenced by
Java, Javascript, Go, Rust

Ballerina is a compiled, type-safe, concurrent programming language targeting microservice development and integration.^[3]

It is an open source project started in 2015 by architects from WSO2 as code-based alternative to the configuration-based integration tools such as EAI, ESB, and workflow products.^[4]

Ballerina has various constructs geared toward cloud-native development including support for modern data formats and protocols, reliability, distributed transactions, APIs, and event streams.^[5]

Syntax

A simple hello world REST API is depicted below.

// The simplest hello world REST API
// To run it:
// ballerina run demo.bal
// To invoke:
// curl localhost:9090/hello/hi

import ballerina/http;

service<http:Service> hello bind {port:9090} {
  hi (endpoint caller, http:Request request) {
      http:Response res;
      res.setTextPayload("Hello World!\n");
      _ = caller->respond(res);
  }
}

References

External links

• http://ballerina.io