release.yml

version: 0.2
phases:
  build:
    commands:
      - docker login -u AWS -p $(aws ecr get-login-password --region $AWS_REGION) $ECR_ENDPOINT
      - docker pull $ECR_IMAGE_URL:$PREVIOUS_STAGE_NAME
      - docker tag $ECR_IMAGE_URL:$PREVIOUS_STAGE_NAME $ECR_IMAGE_URL:$STAGE_NAME
      - docker push $ECR_IMAGE_URL:$STAGE_NAME
  post_build:
    on-failure: CONTINUE
    commands:
      - region="${STAGE_REGION:-$AWS_REGION}" 
      - |
        if [ ! -z "$LAMBDA_FUNCTION_NAME" -a  "$LAMBDA_FUNCTION_NAME" != "placeholder" ];
          then
            aws lambda update-function-code --function-name "$LAMBDA_FUNCTION_NAME" --image-uri "$ECR_IMAGE_URL:$STAGE_NAME" --region $region
            imageSha=$(docker images --no-trunc --quiet $ECR_IMAGE_URL:$PREVIOUS_STAGE_NAME);
            aws lambda tag-resource --resource "$LAMBDA_FUNCTION_ARN" --tags "IMAGE_SHA=$imageSha"
          else
            echo 'Not a serverless stage'
            if [ -z "$SERVICE_NAME" ] || [ "$SERVICE_NAME" == "placeholder" ];
              then
                echo 'Service is not ready yet. Repository tagged correctly, exiting now';
              else
                TASK_ARN=$(aws ecs describe-services --cluster $CLUSTER_ARN --services $SERVICE_NAME | jq -r '.services[].taskDefinition') 
                TASK_DEFINITION=$(aws ecs describe-task-definition --task-definition  "$TASK_ARN" | jq -r '.taskDefinition')
                CONTAINER_DEFINITIONS=$(jq -r '.containerDefinitions' <<< $TASK_DEFINITION)
                COMMIT_SHA=$ECR_IMAGE_URL:$(git rev-parse HEAD)  
                CONTAINER_INDEX=$(echo $CONTAINER_DEFINITIONS | jq --arg IMAGE_URL "$ECR_IMAGE_URL" 'map(.image | contains($IMAGE_URL)) | index(true)' )
                NEW_TASK_DEFINTIION=$(echo $TASK_DEFINITION | jq --arg IMAGE "$COMMIT_SHA" --arg INDEX "$CONTAINER_INDEX" '.containerDefinitions[$INDEX | tonumber].image = $IMAGE| del(.revision) | del(.status) | del(.statusString) | del(.registeredAt) | del(.taskDefinitionArn) | del(.compatibilities) | del(.requiresAttributes) | del(.registeredBy)' )
                NEW_DEF_ARN=$(aws ecs register-task-definition --cli-input-json "$NEW_TASK_DEFINTIION" | jq -r '.taskDefinition.taskDefinitionArn')
                aws ecs update-service --service $SERVICE_NAME --cluster $CLUSTER_ARN --task-definition "$NEW_DEF_ARN" --force-new-deployment
            fi
        fi