config.yml

# Immuni CircleCI configuration.
# Copyright (C) 2020 Presidenza del Consiglio dei Ministri.
# Please refer to the AUTHORS file for more information.
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.

version: 2.1

# Custom commands
commands:
  build:
    description: Perform a build of the Immuni Android application.
    steps:
      - run:
          name: "[build] Compile and archive"
          command: |
            ASSIGNED_VERSION_NAME=$(./gradlew -q printVersionName)
            ASSIGNED_VERSION_CODE=$(./gradlew -q printVersionCode)

            echo "⚙️ Preparing to build Immuni!"
            echo "Release version (versionName): $ASSIGNED_VERSION_NAME"
            echo "Build number (versionCode): $ASSIGNED_VERSION_CODE"
            echo "Commit: $CIRCLE_SHA1"

            echo "export ASSIGNED_VERSION_NAME=$ASSIGNED_VERSION_NAME" >> $BASH_ENV
            echo "export ASSIGNED_VERSION_CODE=$ASSIGNED_VERSION_CODE" >> $BASH_ENV

            bundle exec fastlane build target:$BUILD_KIND
      - run:
          name: "[build] Create GitHub release"
          command: |
            RELEASE_NAME="Immuni-${ASSIGNED_VERSION_NAME}build${ASSIGNED_VERSION_CODE}"

            ARTIFACTS_PATH=$([ "$BUILD_KIND" == "dev" ] && echo "apk/debug" || echo "bundle/release")
            ARTIFACTS_PATH="app/build/outputs/${ARTIFACTS_PATH}"

            # Use -soft to prevent release from being re-created if it already exists
            # This takes care of concurrency issues (the build would fail)
            ghr \
            -t $RELEASE_GITHUB_TOKEN \
            -u $CIRCLE_PROJECT_USERNAME \
            -r $CIRCLE_PROJECT_REPONAME \
            -c $CIRCLE_SHA1 \
            -n $RELEASE_NAME \
            -soft \
            $RELEASE_NAME $ARTIFACTS_PATH | tee release_result

            if grep -q aborted release_result; then
              echo "A release with version $ASSIGNED_VERSION_NAME and build number $ASSIGNED_VERSION_CODE already exists. Aborting."
              exit 1
            fi
      - store_artifacts:
          path: app/build/outputs/
      - run:
          name: "[build] Upload to Google Play Store"
          no_output_timeout: 30m
          command: |
            if [[ "${BUILD_KIND}" == "release" ]]; then
                fastlane supply \
                --aab "$(find app/build/outputs -name '*.aab')" \
                --json_key $UPLOAD_PATH \
                --track alpha \
                --skip_upload_screenshots \
                --skip_upload_images
            else
                echo "This is not a production build, skipping the Google Play Store upload phase."
            fi

  check_build_kind:
    description: Check whether the commit should trigger a build or not.
    steps:
      - run:
          name: "[check] Identify build kind"
          command: |
            # Verify if it's a build commit
            GIT_MESSAGE=$(git log --pretty=%s | head -1 || true)

            if [[ ! $GIT_MESSAGE == *"#build"* ]]; then
              echo "Not a build commit. Stopping the execution of the build job."
              circleci-agent step halt
            fi

            # Check the build kind from the git message. The git message must contain either:
            # "#build-release" or "#build-dev", depending on the kind of build.
            BUILD_KIND="$(echo $GIT_MESSAGE | sed -n -E 's/^.*#build-(release|dev).*$/\1/p')"

            if [[ -z "${BUILD_KIND}" ]]; then
                echo "Unrecognized build kind; valid types are: dev, release."
                circleci-agent step halt
            fi

            # Make it available for the rest of the pipeline
            echo "export BUILD_KIND=$BUILD_KIND" >> $BASH_ENV

  check_release_branch:
    description: Verify if the commit of the build being released is on master. 
    steps:
      - run:
          name: "[release] Stop if not executed on master"
          command: |
            # Verify if the commit belongs to master
            ON_MASTER=$(git branch --contains tags/$CIRCLE_TAG | grep '^* master$' || true)

            if [[ -z "${ON_MASTER}" ]]; then
              echo "Releases can only be tagged on master. Stopping the execution of the job."
              exit 1
            fi

  compute_release_changelog:
    description: Compute the release changelog based on conventional commits.
    steps:
      - run:
          name: "[release] Compute changelog"
          command: |
            # Uses conventional-changelog-cli to compute a semantic changelog

            # Configuration
            CHANGELOG_HEADER_LINES=8
            VERSION_REGEX='^v\([0-9]\+\.\?\)\+$'

            # Retrieve the tags associated with the previous release and the newly tagged release
            CURRENT_RELEASE_TAG=$CIRCLE_TAG
            PREVIOUS_RELEASE_TAG=$(git tag -l | grep $VERSION_REGEX | sort -nr | head -2 | tail -1)

            if [[ "${CURRENT_RELEASE_TAG}" == "${PREVIOUS_RELEASE_TAG}" ]]; then
                echo "This is the first release of the project; its changelog must be set manually."
                exit 1
            fi

            # Configure conventional-changelog
            sed "s/PREVIOUS_RELEASE_TAG/$PREVIOUS_RELEASE_TAG/g" ci/changelog_config.tpl > ci/changelog_config.js

            # Compute the changelog
            conventional-changelog -p angular -n ci/changelog_config.js > FULL_CHANGELOG.md

            # Skip the changelog header
            awk 'NF {p=1} p' \<<< "$(< FULL_CHANGELOG.md)" | tail -n +$CHANGELOG_HEADER_LINES > CHANGELOG.md

  fetch_config:
    description: Fetch configuration files necessary to perform builds.
    steps:
      - run:
          name: "[fetch_config] Setup custom environment variables"
          command: |
            # Create necessary files
            echo $KEYSTORE | base64 --decode > app/immuni-android.keystore
            echo $UPLOAD_SERVICE_ACCOUNT_JSON | base64 --decode > app/immuni-upload.json

            # Setup environment variables
            echo "export BUILD_NUMBER=$CIRCLE_BUILD_NUM" >> $BASH_ENV
            echo "export KEYSTORE_PATH='$(pwd)/app/immuni-android.keystore'" >> $BASH_ENV
            echo "export UPLOAD_PATH='$(pwd)/app/immuni-upload.json'" >> $BASH_ENV

  install_android_dependencies:
    description: Install Android dependencies.
    steps:
      - restore_cache:
          name: "[dependencies] Restore the cache"
          key: jars-{{ checksum "build.gradle" }}-{{ checksum "app/build.gradle" }}
      - run:
          name: "[dependencies] Install dependencies"
          command: ./gradlew androidDependencies
      - save_cache:
          name: "[dependencies] Save the cache"
          key: jars-{{ checksum "build.gradle" }}-{{ checksum "app/build.gradle" }}
          paths:
            - ~/.gradle

  post_release_changelog:
    description: Update the changelog of the GitHub released that has been published on the store.
    steps:
      - run:
          name: "[release] Post changelog"
          command: |
            # Configuration
            FULL_REPO_NAME="$CIRCLE_PROJECT_USERNAME/$CIRCLE_PROJECT_REPONAME"
            RELEASE_API="https://api.github.com/repos/$FULL_REPO_NAME/releases"
            RELEASE_REGEX='^Immuni-\([0-9]\+\.\?\)\+build[0-9]\+$'

            # Retrieve the existing release. Note: if multiple exist for the same commit,
            # we take the latest.
            MATCHING_TAG=$(git tag --points-at tags/$CIRCLE_TAG | grep $RELEASE_REGEX | sort -nr | head -1 || true)

            if [[ -z "${MATCHING_TAG}" ]]; then
                echo "No GitHub release associated with this version, halting."
                exit 1
            fi

            RELEASE_ID=$(curl -H "Authorization: token $RELEASE_GITHUB_TOKEN" $RELEASE_API/tags/$MATCHING_TAG -s | jq -r '.id')

            # Edit changelog
            curl \
            --request PATCH \
            --header "Authorization: token $RELEASE_GITHUB_TOKEN" \
            --data "`jq -n --arg msg "$(cat CHANGELOG.md)" '{body: $msg}'`" \
            $RELEASE_API/$RELEASE_ID

  setup_ci:
    description: Configure the CI environment.
    steps:
      - run:
          name: "[ci_setup] Configure ruby"
          command: |
            echo "export PATH=${HOME}/.rubies/ruby-2.6.1/bin:${PATH}" >> $BASH_ENV
            ruby -v
      - restore_cache:
          name: "[ci_setup] Restore the ruby dependencies cache"
          key: 1-gems-{{ checksum "Gemfile.lock" }}
      - run:
          name: "[ci_setup] Install ruby dependencies"
          command: bundle install
      - save_cache:
          name: "[ci_setup] Save the ruby dependencies cache"
          key: 1-gems-{{ checksum "Gemfile.lock" }}
          paths:
            - ~/.gem
      - run:
          name: "[ci_setup] Configure tools"
          command: |
            curl -L https://github.com/tcnksm/ghr/releases/download/v0.13.0/ghr_v0.13.0_linux_amd64.tar.gz -o ghr.tar.gz
            curl -L https://github.com/tcnksm/ghr/releases/download/v0.13.0/v0.13.0_SHASUMS -o v0.13.0_SHASUMS

            TRUSTED_GHR_SHA="$(cat v0.13.0_SHASUMS | grep 'ghr_v0.13.0_linux_amd64.tar.gz' | sed -E 's/(\S+)\s+.*/\1/')"
            LOCAL_GHR_SHA="$(sha256sum ghr.tar.gz | sed -E 's/(\S+)\s+.*/\1/')"

            if [[ ! $LOCAL_GHR_SHA == $TRUSTED_GHR_SHA ]]; then
              echo "Untrusted release of ghr, stopping execution."
              circleci-agent step halt
            fi

            tar xzf ghr.tar.gz
            sudo mv ghr_v0.13.0_linux_amd64/ghr /usr/local/bin/

  setup_pr_tools:
    description: Configure the pull requests environment.
    steps:
      - run:
          name: "[pr_setup] Install ktlint"
          command: |
            # Get binaries from official repository
            curl -sSLO https://github.com/pinterest/ktlint/releases/download/0.36.0/ktlint && chmod a+x ktlint

            # Verify PGP signature
            curl -sS https://keybase.io/pinterestandroid/pgp_keys.asc | sudo gpg --import
            curl -sSLO https://github.com/pinterest/ktlint/releases/download/0.36.0/ktlint.asc
            sudo gpg --verify ktlint.asc

            # Install globally
            sudo mv ktlint /usr/local/bin/
      - run:
          name: "[pr_setup] Install danger"
          command: yarn install --dev

  setup_release_tools:
    description: Configure the release environment.
    steps:
      - run:
          name: "[release_setup] Install dependencies"
          command: sudo npm install -g conventional-changelog-cli

executors:
  default:
    docker:
      - image: circleci/android:api-29-node
    environment:
      GRADLE_OPTS: '-Dorg.gradle.daemon=false'
      JVM_OPTS: -Xmx3200m

jobs:
  build:
    working_directory: ~/code
    executor: default
    resource_class: medium
    steps:
      - checkout:
          name: "[build] Checkout the code"
      - check_build_kind
      - setup_ci
      - fetch_config
      - install_android_dependencies
      - build

  pr_check:
    working_directory: ~/code
    executor: default
    resource_class: small
    steps:
      - run:
          name: "[pr_check] Stop job if not running in PR"
          command: |
            if [[ -z "${CIRCLE_PULL_REQUEST}" ]]; then
                circleci-agent step halt
            fi
      - checkout:
          name: "[pr_check] Checkout the code"
      - setup_pr_tools
      - fetch_config
      - install_android_dependencies
      - run:
          name: "[pr_check] Run danger"
          command: |
            [ -z "${DANGER_GITHUB_API_TOKEN}" ] || yarn danger ci

  release:
    working_directory: ~/code
    executor: default
    resource_class: small
    steps:
      - checkout:
          name: "[release] Checkout the code"
      - check_release_branch
      - setup_release_tools
      - compute_release_changelog
      - post_release_changelog

  scheduler:
    docker:
      - image: cimg/python:3.7.7
    resource_class: small
    steps:
      - checkout
      - run:
          name: "[scheduler] Initialize scheduler submodule"
          command: git submodule update --init
      - restore_cache:
          name: "[scheduler] Restore Python Cache"
          keys:
            - pip-packages-v1-{{ .Branch }}-{{ checksum "scheduler/Pipfile.lock" }}
            - pip-packages-v1-{{ .Branch }}-
            - pip-packages-v1-
      - run:
          name: "[scheduler] Install dependencies"
          working_directory: scheduler
          environment:
            PIPENV_NOSPIN: 1
            PIPENV_VENV_IN_PROJECT: 1
          command: |
            pip install pipenv
            pipenv install
      - save_cache:
          name: "[scheduler] Save Python Cache"
          paths:
            - ~/.cache/pip
            - scheduler/.venv
          key: pip-packages-v1-{{ .Branch }}-{{ checksum "scheduler/Pipfile.lock" }}
      - run:
          name: "[scheduler] Configure scheduler"
          command: |
            mv scheduler_config.json scheduler/config.json
      - run:
          name: "[scheduler] Run scheduler"
          working_directory: scheduler
          command: |
            export REPOSITORY="${CIRCLE_PROJECT_USERNAME}/${CIRCLE_PROJECT_REPONAME}"
            pipenv run python scheduler.py

  unit_tests:
    working_directory: ~/code
    executor: default
    resource_class: medium
    steps:
      - checkout:
          name: "[unit_tests] Checkout the code"
      - fetch_config
      - install_android_dependencies
      - run:
          name: "[unit_tests] Run App Module Unit Tests"
          command: ./gradlew :app:testDebugUnitTest
      - store_artifacts:
          path: app/build/reports
      - store_test_results:
          path: app/build/test-results
      - run:
          name: "[unit_tests] Run Network Module Unit Tests"
          command: ./gradlew :network:testDebugUnitTest
      - store_artifacts:
          path: network/build/reports
      - store_test_results:
          path: network/build/test-results
      - run:
          name: "[unit_tests] Run Extensions Module Unit Tests"
          command: ./gradlew :extensions:testDebugUnitTest
      - store_artifacts:
          path: extensions/build/reports
      - store_test_results:
          path: extensions/build/test-results

workflows:
  version: 2
  build:
    jobs:
      - build:
          context: android
  pr_check:
    jobs:
      - pr_check:
          context: danger
  release:
    jobs:
      - release:
          context: android
          filters:
            branches:
              ignore: /.*/
            tags:
              only: /^v(?:[0-9]+\.?)+$/
  scheduler:
    triggers:
      - schedule:
          cron: "0,15,30,45 * * * *"
          filters:
            branches:
              only:
                - master
    jobs:
      - scheduler:
          context: scheduler
  tests:
    jobs:
      - unit_tests