.gitlab-ci.yml

# Stages for my CI/CD Pipeline
stages:
  - build
  - test
  - image-build
  - deploy-dev

# Global Variable 
variables:
    IMAGE_NAME: gitlabci-app


# Build stage with maven docker image and uploading artifacts to 
# Gitlab CI 
build:
  image: 
    name: maven:3.6.1-jdk-14
  stage: build
  # using the runner with docker tag in build stage
  tags: 
    - docker       
  script:
    - mvn package
  artifacts:
    paths:
      - target/demo.war
    expire_in: 1 week


# Test stage with maven docker image
test:
  image: maven:3.6.1-jdk-14
  stage: test
  script:
    - mvn test
  # using runner with docker tag in Test stage
  tags: 
    - docker


# image-build stage for Docker build and Dokcer push the 
# maven artifacts
image-build:
  image:
    name: docker:stable
  stage: image-build
  # using runner with docker build tag to use the other runner
  # that can perform docker commands
  tags:
    - docker build  
  script:
    - docker login -u $REPOSITORY_NAME -p $PASSWORD
    - docker build -t $REPOSITORY_NAME/$IMAGE_NAME:$CI_COMMIT_SHORT_SHA .
    - docker push $REPOSITORY_NAME/$IMAGE_NAME:$CI_COMMIT_SHORT_SHA
  # downloading artifact from build stage
  dependencies:
    - build

# Deply the Docker image to kubernetes(EKS) cluster
deploy-to-dev:
  image:
    # customized docker image to setup kubeconfig and run kubectl for EKS 
    name: suryalolla/kubectl-docker:0.0.1
  stage: deploy-dev
  # using runner with docker build tag to use the other runner
  # that can perform docker commands
  tags:
    - docker build
  variables:
    DEPLOYMENT_NAME: web-application
    SERVICE_NAME: web-application-service
    KUBE_NAMESPACE: dev-env
    APP_NAME: demo-app
    APP_REPLICAS: 2
    AWS_REGION: us-east-1
    CLUSTER_NAME: EKS-Levvel
  script:
    - aws eks --region $AWS_REGION update-kubeconfig --name $CLUSTER_NAME
    - chmod +x templates/*
    - ./templates/deployment-template.sh true $DEPLOYMENT_NAME $KUBE_NAMESPACE $APP_NAME $APP_REPLICAS $REPOSITORY_NAME $IMAGE_NAME 
    - ./templates/service-template.sh true $SERVICE_NAME $KUBE_NAMESPACE $APP_NAME
    - kubectl apply -f deployment.yaml
    - kubectl apply -f service.yaml