todo-chronicles

Make sure you have Java11 installed before running the code in this repository:

$ java -version

This repository contains 3 projects:

• example-todo-app-project which is a slightly modified version of TODO Demo Application part of the Helidon examples. This project has 2 modules, both using Dekorate to generate Kubernetes manifest files:
  • helidon-examples-todo-frontend
  • helidon-examples-todo-backend
• todo-app_quarkus is a slightly modified version of TODO Application with Quarkus.
• todo_app_springboot is a modified version of TODO Application with Spring Boot. The version in this repo uses a different Java version, an H2 database and way to persist its data.

How to run the Helidon examples

You can run both Helidon example projects by going to todo_app_helidon folder:

$ cd todo-app-helidon

1. If you would like to generate Kubernetes/Knative or Helm charts using the existing Docker image, please comment the Tekton dependency in the each pom.xml:

<!--        <dependency>-->
<!--            <groupId>io.dekorate</groupId>-->
<!--            <artifactId>tekton-annotations</artifactId>-->
<!--            <version>${dekorate-annotations.version}</version>-->
<!--        </dependency>-->

Then run:

$ mvn package  -Ddekorate.build=false -Ddekorate.push=false

The above command will generate:

• the Kubernetes manifests (kubernetes.json and kubernetes.yml) under: todo-app-helidon/backend/target/classes/META-INF/dekorate for the backend module or todo-app-helidon/frontend/target/classes/META-INF/dekorate for the frontend module.

• the Knative manifests (knative.json and knative.yml) under: todo-app-helidon/backend/target/classes/META-INF/dekorate for the backend module or todo-app-helidon/frontend/target/classes/META-INF/dekorate for the frontend module.

• the Helm manifests under: todo-app-helidon/backend/target/classes/META-INF/dekorate/helm for the backend module or todo-app-helidon/frontend/target/classes/META-INF/dekorate/helm for the frontend module.

2. If you would like to generate Tekton resources, comment the Knative and Helm Dekorate dependencies present in the pom.xml files:

<!--        <dependency>-->
<!--            <groupId>io.dekorate</groupId>-->
<!--            <artifactId>knative-annotations</artifactId>-->
<!--            <version>${dekorate-annotations.version}</version>-->
<!--        </dependency>-->
<!--        <dependency>-->
<!--            <groupId>io.dekorate</groupId>-->
<!--            <artifactId>helm-annotations</artifactId>-->
<!--            <version>${dekorate-annotations.version}</version>-->
<!--        </dependency>-->

Uncomment the following dependency (if commented in previous use case):

        <dependency>
            <groupId>io.dekorate</groupId>
            <artifactId>tekton-annotations</artifactId>
            <version>${dekorate-annotations.version}</version>
        </dependency>

And now run:

$ mvn package  -Ddekorate.build=false -Ddekorate.push=false

The above command will generate the Tekton manifests under:

• todo-app-helidon/backend/target/classes/META-INF/dekorate for the backend module or
• todo-app-helidon/frontend/target/classes/META-INF/dekorate for the frontend module.

How to run the Quarkus examples

You can run the Quarkus example project by going to todo_app_quarkus folder:

cd todo-app-quarkus

If you run the following command:

mvn clean package

you will obtain the following under todo-app-quarkus/target:

• helm folder containing the Helm charts generated for the app.
• kubernetes folder containing knative.json and knative.yml manifests.

If you would like to generate Kubernetes manifests, please comment the following line in todo-app-quarkus/src/main/resources/application.properties :

quarkus.kubernetes.deployment-target=knative

and run again mvn clean package. This will result in generating todo-app-quarkus/target/kubernetes/kubernetes.json and todo-app-quarkus/target/kubernetes/kubernetes.yml

How to run the SpringBoot examples

You can run both SpringBoot example projects by going to todo_app_springboot folder:

$ cd todo-app-springboot

1. If you would like to generate Kubernetes/Knative or Helm charts using the existing Docker image, please comment the Tekton dependency in the pom.xml:

<!--        <dependency>-->
<!--            <groupId>io.dekorate</groupId>-->
<!--            <artifactId>tekton-annotations</artifactId>-->
<!--            <version>${dekorate-annotations.version}</version>-->
<!--        </dependency>-->

Then run:

$ mvn package  -Ddekorate.build=false -Ddekorate.push=false

The above command will generate:

• the Kubernetes manifests (kubernetes.json and kubernetes.yml) under todo-app-springboot/target/classes/META-INF/dekorate.

• the Knative manifests (knative.json and knative.yml) under todo-app-springboot/target/classes/META-INF/dekorate.

• the Helm manifests under: todo-app-springboot/target/classes/META-INF/dekorate/helm.

2. If you would like to generate Tekton resources, comment the Knative and Helm Dekorate dependencies present in the pom.xml files:

<!--        <dependency>-->
<!--            <groupId>io.dekorate</groupId>-->
<!--            <artifactId>knative-annotations</artifactId>-->
<!--            <version>${dekorate-annotations.version}</version>-->
<!--        </dependency>-->
<!--        <dependency>-->
<!--            <groupId>io.dekorate</groupId>-->
<!--            <artifactId>helm-annotations</artifactId>-->
<!--            <version>${dekorate-annotations.version}</version>-->
<!--        </dependency>-->

Uncomment the following dependency (if commented in previous use case):

        <dependency>
            <groupId>io.dekorate</groupId>
            <artifactId>tekton-annotations</artifactId>
            <version>${dekorate-annotations.version}</version>
        </dependency>

And now run:

$ mvn package  -Ddekorate.build=false -Ddekorate.push=false

The above command will generate the Tekton manifests under todo-app-springboot/target/classes/META-INF/dekorate.