The microservice architecture has been adopted by many developer teams around the world. To be successful, it's crucial that you understand how to program a microservice and get it running in the cloud. This book will walk you through the process of how to build, test, and deploy a Java-based Micronaut microservice to the Oracle Cloud with GitHub Actions. You'll learn how to create a Virtual Machine (with both the Oracle Cloud Infrastructure (OCI) CLI and the OCI Gradle Plugin), as well as create and deploy the microservice as a Docker container that can be stored in Oracle Container Infrastructure Registry (OCIR) and deployed to an Oracle Kubernetes Engine (OKE) cluster. The microservice will use Micronaut Data for persistence, Testcontainers for testing, and Liquibase to manage your Oracle DB production schema. After reading or using this book, you'll be able to build, test and deploy your first microservices using theMicronaut framework, Oracle Cloud and more. What You'll Learn Build and deploy Java-based microservices using Micronaut and Oracle Cloud Run tests and publishing reports Deploy to Oracle Cloud using OCI CLI and the OCI Gradle plug-in Add a persistence tier to the microservice Distribute a microservice with persistence Who This Book Is For Programmers and software developers with experience in Java and microservices programming who are new to Micronaut. Table of Contents About the Author Acknowledgments Introduction Chapter 1: Creating a Micronaut Application and Getting Started with GitHub Actions Creating the Service Running the App Adding Support for GitHub Actions Bling TL;DR Next Source Code Chapter 2: Building and Publishing a JAR Runners Intro to “Actions” Checkout Setup Java Progress Check Building the JAR Publishing the JAR TL;DR Next Source Code Chapter 3: Running Tests and Publishing Test Reports Preparing Our App for Spock Create a Spock Test Add a Controller and Test It Add an Action to Run Tests Add an Action to Publish Tests When Failure Happens TL;DR Next Source Code Chapter 4: Deploying a Microservice to Oracle Cloud with GitHub Actions and the OCI CLI Can You Keep a Secret? Using Secrets in Your Workflow Installing the CLI Creating the Instance Deploy the App Wait for SSH Stop App Push JAR Start App Run the Build TL;DR Next Source Code Chapter 5: Deploying a Microservice to Oracle Cloud with GitHub Actions and the OCI Gradle Plugin Configure Gradle TL;DR Next Source Code Chapter 6: Adding a Persistence Tier to the Microservice Managing Schema Modifications Spin Up a DB Liquibase-Micronaut Integration Add Micronaut Data Add Dependencies Start the Application Create a Model Create a Repository Modify the Controller Test Persistence TL;DR Next Source Code Chapter 7: Testing the Persistence Tier with Testcontainers Adding Dependencies Modifying Our Abstract Spec Running the Pipeline Tests with Testcontainers TL;DR Next Source Code Chapter 8: Deploying the Microservice with a Tested Persistence Tier in Place Autonomous Wallet Configure the Local Autonomous DB Datasource Configure the Production Datasource TL;DR Next Source Code Chapter 9: Deploying the Microservice as a Docker Container The Dockerfile Preparing to Build the Docker Image Building the Docker Image Running the Docker Build Locally Modifying the Build TL;DR Next Source Code Chapter 10: Deploying the Microservice Docker Container to Kubernetes Create a Service Account Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Create Kubernetes Deployment Configuration Create a Secret Create Deployment YAML Add a Deployment Step Kill an Existing Pod The Final Build TL;DR Next Source Code Index The microservice architecture has been adopted by many developer teams around the world. To be successful, it's crucial that you understand how to program a microservice and get it running in the cloud. This book will walk you through the process of how to build, test, and deploy a Java-based Micronaut microservice to the Oracle Cloud with GitHub Actions. You'll learn how to create a Virtual Machine (with both the Oracle Cloud Infrastructure (OCI) CLI and the OCI Gradle Plugin), as well as create and deploy the microservice as a Docker container that can be stored in Oracle Container Infrastructure Registry (OCIR) and deployed to an Oracle Kubernetes Engine (OKE) cluster. The microservice will use Micronaut Data for persistence, Testcontainers for testing, and Liquibase to manage your Oracle DB production schema. After reading or using this book, you'll be able to build, test and deploy your first microservices using the Micronaut framework, Oracle Cloud and more. What You'll Learn• Build and deploy Java-based microservices using Micronaut and Oracle Cloud• Run tests and publishing reports• Deploy to Oracle Cloud using OCI CLI and the OCI Gradle plug-in• Add a persistence tier to the microservice• Distribute a microservice with persistence Who This Book Is ForProgrammers and software developers with experience in Java and microservices programming who are new to Micronaut.
