Book Image

Cloud Native Applications with Ballerina

By : Dhanushka Madushan
Book Image

Cloud Native Applications with Ballerina

By: Dhanushka Madushan

Overview of this book

The Ballerina programming language was created by WSO2 for the modern needs of developers where cloud native development techniques have become ubiquitous. Ballerina simplifies how programmers develop and deploy cloud native distributed apps and microservices. Cloud Native Applications with Ballerina will guide you through Ballerina essentials, including variables, types, functions, flow control, security, and more. You'll explore networking as an in-built feature in Ballerina, which makes it a first-class language for distributed computing. With this app development book, you'll learn about different networking protocols as well as different architectural patterns that you can use to implement services on the cloud. As you advance, you'll explore multiple design patterns used in microservice architecture and use serverless in Amazon Web Services (AWS) and Microsoft Azure platforms. You will also get to grips with Docker, Kubernetes, and serverless platforms to simplify maintenance and the deployment process. Later, you'll focus on the Ballerina testing framework along with deployment tools and monitoring tools to build fully automated observable cloud applications. By the end of this book, you will have learned how to apply the Ballerina language for building scalable, resilient, secured, and easy-to-maintain cloud native Ballerina projects and applications.
Table of Contents (15 chapters)
1
Section 1: The Basics
4
Section 2: Building Microservices with Ballerina
8
Section 3: Moving on with Cloud Native

Managing certificates in Ballerina applications

When a client application needs to access a service over a network, there should be a way to verify that the service that is attempting to access is the service it claims to be. This validation can be done with the use of certificates. Certificates use public-key cryptography to validate endpoints that we need to connect. In this section, we will learn how to use a certificate in Ballerina to secure services. We will discuss creating SSL-enabled services, clients, and mutual SSL to validate both parties.

Securing the Ballerina service with HTTPS

Certificates are often used in computer security to verify a claim given by a service. Public key cryptography uses a private key and a public key to manage certificates. A private key is a key that is only known to the component that generates messages and claims. The private key is used to generate a signature from the content that it needs to send. A public key is a key that can be shared...