elixir.yml

name: Elixir CI

on:
  schedule:
    - cron: '0 5 * * *'
  push:
    branches: master
  pull_request:
  workflow_dispatch:

concurrency:
  group: ci-${{ github.ref }}
  cancel-in-progress: true

jobs:
  asdf:
    name: ASDF
    runs-on: ubuntu-22.04
    steps:
      - uses: actions/checkout@v3
      # cache the ASDF directory, using the values from .tool-versions
      - name: ASDF cache
        uses: actions/cache@v3
        with:
          path: ~/.asdf
          key: ${{ runner.os }}-asdf-v3-${{ hashFiles('.tool-versions') }}
        id: asdf-cache
      # only run `asdf install` if we didn't hit the cache
      - uses: asdf-vm/actions/install@v1
        if: steps.asdf-cache.outputs.cache-hit != 'true'
      - run: |
          mix local.rebar --force
          mix local.hex --force
        if: steps.asdf-cache.outputs.cache-hit != 'true'

  deps:
    name: Get Dependencies
    runs-on: ubuntu-22.04
    needs: asdf

    steps:
      - uses: actions/checkout@v3
      - name: Restore dependencies cache
        id: deps-cache
        uses: actions/cache@v3
        with:
          path: deps
          key: ${{ runner.os }}-mix-v2-${{ hashFiles('**/mix.lock') }}
      - name: ASDF cache
        uses: actions/cache@v3
        with:
          path: ~/.asdf
          key: ${{ runner.os }}-asdf-v3-${{ hashFiles('.tool-versions') }}
        if: steps.deps-cache.outputs.cache-hit != 'true'
      - uses: mbta/actions/reshim-asdf@v1
        if: steps.deps-cache.outputs.cache-hit != 'true'
      - name: Install dependencies
        run: mix deps.get
        if: steps.deps-cache.outputs.cache-hit != 'true'

  dev:
    name: Dev Tasks
    runs-on: ubuntu-22.04
    needs: deps

    steps:
      - uses: actions/checkout@v3
      - name: ASDF cache
        uses: actions/cache@v3
        with:
          path: ~/.asdf
          key: ${{ runner.os }}-asdf-v3-${{ hashFiles('.tool-versions') }}
      - uses: mbta/actions/reshim-asdf@v1
      - name: Restore dependencies cache
        id: deps-cache
        uses: actions/cache@v3
        with:
          path: deps
          key: ${{ runner.os }}-mix-v2-${{ hashFiles('**/mix.lock') }}
      - name: Restore dev build cache
        uses: actions/cache@v3
        with:
          path: _build/dev
          key: ${{ runner.os }}-mix-dev-${{ hashFiles('**/mix.lock') }}
      - name: Check formatting
        run: mix format --check-formatted
      - name: Compile (warnings as errors)
        run: mix compile --force --warnings-as-errors
      - name: Package Audits
        run: |
          mix hex.audit
          mix deps.audit
      - name: Credo
        run: mix credo --strict
      - name: Sobelow (Security)
        run: |
          cd apps/api_web
          mix sobelow --skip --exit

  dialyzer:
    name: Dialyzer
    runs-on: ubuntu-22.04
    needs: deps

    steps:
      - uses: actions/checkout@v3
      - name: ASDF cache
        uses: actions/cache@v3
        with:
          path: ~/.asdf
          key: ${{ runner.os }}-asdf-v3-${{ hashFiles('.tool-versions') }}
      - uses: mbta/actions/reshim-asdf@v1
      - name: Restore dependencies cache
        id: deps-cache
        uses: actions/cache@v3
        with:
          path: deps
          key: ${{ runner.os }}-mix-v2-${{ hashFiles('**/mix.lock') }}
      - uses: mbta/actions/dialyzer@v1

  test:
    name: Test Tasks
    runs-on: ubuntu-22.04
    needs: deps

    services:
      dynamodb:
        image: amazon/dynamodb-local:2.0.0
        ports:
          - 8000:8000
      mosquitto:
        image: eclipse-mosquitto:2.0
        ports:
          - 1883:1883
        volumes:
          - ./mosquitto:/mosquitto/config/
        options: --name mqtt

    steps:
      - uses: actions/checkout@v3
      - name: Restart MQTT to load mosquitto/mosquitto.conf from checkout
        run: docker restart mqtt
      - name: ASDF cache
        uses: actions/cache@v3
        with:
          path: ~/.asdf
          key: ${{ runner.os }}-asdf-v3-${{ hashFiles('.tool-versions') }}
      - uses: mbta/actions/reshim-asdf@v1
      - name: Restore dependencies cache
        id: deps-cache
        uses: actions/cache@v3
        with:
          path: deps
          key: ${{ runner.os }}-mix-v2-${{ hashFiles('**/mix.lock') }}
      - name: Restore test build cache
        uses: actions/cache@v3
        with:
          path: _build/test
          key: ${{ runner.os }}-mix-test-${{ hashFiles('**/mix.lock') }}
      - name: Run lcov and tests
        run: mix lcov --exit
      - name: Run integration tests
        working-directory: apps/state_mediator
        run: mix test --only integration
      - name: Save PR information
        run: |
          mkdir -p cover
          echo "${{ github.event.pull_request.number }}" > cover/PR_NUMBER
          echo "${{ github.event.pull_request.head.sha }}" > cover/PR_SHA
        if: github.event.pull_request
      - name: Upload coverage artifact
        uses: actions/upload-artifact@v3
        with:
          name: elixir-lcov
          path: cover/