.gitlab-ci.yml

variables:
  DOCKER_TARGET_IMAGE: registry.ddbuild.io/ci/dd-trace-dotnet-aws-lambda-layer
  DOCKER_TARGET_VERSION: latest
  # Default version for development builds
  # This will be overwritten by the tag version if it is a release.
  VERSION: dev
  # Manual trigger variables
  TRACER_BRANCH:
    description: "Branch of the dd-trace-dotnet repository to use (default empty). For a basic testing, you can use master or something."
    value: ""
  TRACER_VERSION:
    description: "Latest release version of the dd-trace-dotnet to tag the build with (default empty)."
    value: ""
  LAYER_SUFFIX:
    description: "Suffix to be appended to the layer name (default empty)."
    value: ""

stages:
  - pre 
  - build

.go-cache: &go-cache
  key: dd-trace-dotnet-aws-lambda-layer-go-cache
  policy: pull

ci image:
  stage: build
  image: registry.ddbuild.io/images/docker:20.10
  tags: ["arch:arm64"]
  rules:
    - if: '$CI_COMMIT_BRANCH == "main" && $CI_PIPELINE_SOURCE == "push"'
      changes:
        - .gitlab/Dockerfile
      when: on_success
  variables:
    DOCKER_TARGET: ${DOCKER_TARGET_IMAGE}:${DOCKER_TARGET_VERSION}
  script:
    - docker buildx build --platform linux/amd64,linux/arm64 --no-cache --pull --push --tag ${DOCKER_TARGET} -f .gitlab/Dockerfile .

generator:
  stage: pre
  image: registry.ddbuild.io/images/mirror/golang:alpine
  tags: ["arch:amd64"]
  cache: *go-cache
  rules:
    - if: '$CI_PIPELINE_SOURCE =~ /external_pull_request_event|merge_request_event|push/'
      when: never
    - when: always
  script:
    - if [[ "$CI_COMMIT_TAG" =~ ^v[0-9]+$ ]]; then echo "VERSION=${CI_COMMIT_TAG//[!0-9]/}" >> .env; fi
    # These variables are used to trigger the build job manually, when the pipeline is triggered by an external source
    # these are not set, so we reset them to a placeholder.
    - if [ -z "$TRACER_BRANCH" ] || [ "$TRACER_BRANCH" = "placeholder" ]; then echo "TRACER_BRANCH=placeholder" >> .env; fi
    - if [ -z "$TRACER_VERSION" ] || [ "$TRACER_VERSION" = "placeholder" ]; then echo "TRACER_VERSION=placeholder" >> .env; fi
    - if [ -z "$UPSTREAM_PIPELINE_ID" ] || [ "$UPSTREAM_PIPELINE_ID" = "placeholder" ]; then echo "UPSTREAM_PIPELINE_ID=placeholder" >> .env; fi
    - if [ -z "$LAYER_SUFFIX" ] || [ "$LAYER_SUFFIX" = "placeholder" ]; then echo "LAYER_SUFFIX=placeholder" >> .env; fi
    - apk add --no-cache gomplate
    - gomplate --config .gitlab/config.yaml
  artifacts:
    paths:
      - .gitlab/build-pipeline.yaml
    reports:
      dotenv: .env

build:
  stage: build
  needs: ["generator"]
  trigger:
    include:
      - artifact: .gitlab/build-pipeline.yaml
        job: generator
    strategy: depend
  needs:
    - job: generator
      artifacts: true
  rules:
    - if: '$CI_PIPELINE_SOURCE =~ /external_pull_request_event|merge_request_event|push/'
      when: never
    - when: always
  variables:
    UPSTREAM_PIPELINE_ID: $UPSTREAM_PIPELINE_ID
    VERSION: $VERSION
    TRACER_BRANCH: $TRACER_BRANCH
    LAYER_SUFFIX: $LAYER_SUFFIX
    TRACER_VERSION: $TRACER_VERSION