Add .gitlab-ci.yml

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+# This file is a template, and might need editing before it works on your project.
+# Auto DevOps
+# This CI/CD configuration provides a standard pipeline for
+# * building a Docker image (using a buildpack if necessary),
+# * storing the image in the container registry,
+# * running tests from a buildpack,
+# * running code quality analysis,
+# * creating a review app for each topic branch,
+# * and continuous deployment to production
+#
+# In order to deploy, you must have a Kubernetes cluster configured either
+# via a project integration, or via group/project variables.
+# AUTO_DEVOPS_DOMAIN must also be set as a variable at the group or project
+# level, or manually added below.
+#
+# If you want to deploy to staging first, or enable canary deploys,
+# uncomment the relevant jobs in the pipeline below.
+#
+# If Auto DevOps fails to detect the proper buildpack, or if you want to
+# specify a custom buildpack, set a project variable `BUILDPACK_URL` to the
+# repository URL of the buildpack.
+# e.g. BUILDPACK_URL=https://github.com/heroku/heroku-buildpack-ruby.git#v142
+# If you need multiple buildpacks, add a file to your project called
+# `.buildpacks` that contains the URLs, one on each line, in order.
+# Note: Auto CI does not work with multiple buildpacks yet
+
+image: alpine:latest
+
+variables:
+  # AUTO_DEVOPS_DOMAIN is the application deployment domain and should be set as a variable at the group or project level.
+  # AUTO_DEVOPS_DOMAIN: domain.example.com
+
+  POSTGRES_USER: user
+  POSTGRES_PASSWORD: testing-password
+  POSTGRES_ENABLED: "true"
+  POSTGRES_DB: $CI_ENVIRONMENT_SLUG
+
+stages:
+  - build
+  - test
+  - review
+  - staging
+  - canary
+  - production
+  - cleanup
+
+build:
+  stage: build
+  image: docker:git
+  services:
+  - docker:dind
+  variables:
+    DOCKER_DRIVER: overlay2
+  script:
+    - setup_docker
+    - build
+  only:
+    - branches
+
+test:
+  services:
+    - postgres:latest
+  variables:
+    POSTGRES_DB: test
+  stage: test
+  image: gliderlabs/herokuish:latest
+  script:
+    - setup_test_db
+    - cp -R . /tmp/app
+    - /bin/herokuish buildpack test
+  only:
+    - branches
+
+codequality:
+  image: docker:latest
+  variables:
+    DOCKER_DRIVER: overlay2
+  allow_failure: true
+  services:
+    - docker:dind
+  script:
+    - setup_docker
+    - codeclimate
+  artifacts:
+    paths: [codeclimate.json]
+
+review:
+  stage: review
+  script:
+    - check_kube_domain
+    - install_dependencies
+    - download_chart
+    - ensure_namespace
+    - install_tiller
+    - create_secret
+    - deploy
+  environment:
+    name: review/$CI_COMMIT_REF_NAME
+    url: http://$CI_PROJECT_PATH_SLUG-$CI_ENVIRONMENT_SLUG.$AUTO_DEVOPS_DOMAIN
+    on_stop: stop_review
+  only:
+    refs:
+      - branches
+    kubernetes: active
+  except:
+    - master
+
+stop_review:
+  stage: cleanup
+  variables:
+    GIT_STRATEGY: none
+  script:
+    - install_dependencies
+    - delete
+  environment:
+    name: review/$CI_COMMIT_REF_NAME
+    action: stop
+  when: manual
+  allow_failure: true
+  only:
+    refs:
+      - branches
+    kubernetes: active
+  except:
+    - master
+
+# Keys that start with a dot (.) will not be processed by GitLab CI.
+# Staging and canary jobs are disabled by default, to enable them
+# remove the dot (.) before the job name.
+# https://docs.gitlab.com/ee/ci/yaml/README.html#hidden-keys
+
+# Staging deploys are disabled by default since
+# continuous deployment to production is enabled by default
+# If you prefer to automatically deploy to staging and
+# only manually promote to production, enable this job by removing the dot (.),
+# and uncomment the `when: manual` line in the `production` job.
+
+.staging:
+  stage: staging
+  script:
+    - check_kube_domain
+    - install_dependencies
+    - download_chart
+    - ensure_namespace
+    - install_tiller
+    - create_secret
+    - deploy
+  environment:
+    name: staging
+    url: http://$CI_PROJECT_PATH_SLUG-staging.$AUTO_DEVOPS_DOMAIN
+  only:
+    refs:
+      - master
+    kubernetes: active
+
+# Canaries are disabled by default, but if you want them,
+# and know what the downsides are, enable this job by removing the dot (.),
+# and uncomment the `when: manual` line in the `production` job.
+
+.canary:
+  stage: canary
+  script:
+    - check_kube_domain
+    - install_dependencies
+    - download_chart
+    - ensure_namespace
+    - install_tiller
+    - create_secret
+    - deploy canary
+  environment:
+    name: production
+    url: http://$CI_PROJECT_PATH_SLUG.$AUTO_DEVOPS_DOMAIN
+  when: manual
+  only:
+    refs:
+      - master
+    kubernetes: active
+
+# This job continuously deploys to production on every push to `master`.
+# To make this a manual process, either because you're enabling `staging`
+# or `canary` deploys, or you simply want more control over when you deploy
+# to production, uncomment the `when: manual` line in the `production` job.
+
+production:
+  stage: production
+  script:
+    - check_kube_domain
+    - install_dependencies
+    - download_chart
+    - ensure_namespace
+    - install_tiller
+    - create_secret
+    - deploy
+    - delete canary
+  environment:
+    name: production
+    url: http://$CI_PROJECT_PATH_SLUG.$AUTO_DEVOPS_DOMAIN
+#  when: manual
+  only:
+    refs:
+      - master
+    kubernetes: active
+
+# ---------------------------------------------------------------------------
+
+.auto_devops: &auto_devops |
+  # Auto DevOps variables and functions
+  [[ "$TRACE" ]] && set -x
+  auto_database_url=postgres://${POSTGRES_USER}:${POSTGRES_PASSWORD}@${CI_ENVIRONMENT_SLUG}-postgres:5432/${POSTGRES_DB}
+  export DATABASE_URL=${DATABASE_URL-$auto_database_url}
+  export CI_APPLICATION_REPOSITORY=$CI_REGISTRY_IMAGE/$CI_COMMIT_REF_SLUG
+  export CI_APPLICATION_TAG=$CI_COMMIT_SHA
+  export CI_CONTAINER_NAME=ci_job_build_${CI_JOB_ID}
+  export TILLER_NAMESPACE=$KUBE_NAMESPACE
+
+  function codeclimate() {
+    cc_opts="--env CODECLIMATE_CODE="$PWD" \
+             --volume "$PWD":/code \
+             --volume /var/run/docker.sock:/var/run/docker.sock \
+             --volume /tmp/cc:/tmp/cc"
+
+    docker run ${cc_opts} codeclimate/codeclimate init
+    docker run ${cc_opts} codeclimate/codeclimate analyze -f json > codeclimate.json
+  }
+
+  function deploy() {
+    track="${1-stable}"
+    name="$CI_ENVIRONMENT_SLUG"
+
+    if [[ "$track" != "stable" ]]; then
+      name="$name-$track"
+    fi
+
+    replicas="1"
+    service_enabled="false"
+    postgres_enabled="$POSTGRES_ENABLED"
+    # canary uses stable db
+    [[ "$track" == "canary" ]] && postgres_enabled="false"
+
+    env_track=$( echo $track | tr -s  '[:lower:]'  '[:upper:]' )
+    env_slug=$( echo ${CI_ENVIRONMENT_SLUG//-/_} | tr -s  '[:lower:]'  '[:upper:]' )
+
+    if [[ "$track" == "stable" ]]; then
+      # for stable track get number of replicas from `PRODUCTION_REPLICAS`
+      eval new_replicas=\$${env_slug}_REPLICAS
+      service_enabled="true"
+    else
+      # for all tracks get number of replicas from `CANARY_PRODUCTION_REPLICAS`
+      eval new_replicas=\$${env_track}_${env_slug}_REPLICAS
+    fi
+    if [[ -n "$new_replicas" ]]; then
+      replicas="$new_replicas"
+    fi
+
+    helm upgrade --install \
+      --wait \
+      --set service.enabled="$service_enabled" \
+      --set releaseOverride="$CI_ENVIRONMENT_SLUG" \
+      --set image.repository="$CI_APPLICATION_REPOSITORY" \
+      --set image.tag="$CI_APPLICATION_TAG" \
+      --set image.pullPolicy=IfNotPresent \
+      --set application.track="$track" \
+      --set application.database_url="$DATABASE_URL" \
+      --set service.url="$CI_ENVIRONMENT_URL" \
+      --set replicaCount="$replicas" \
+      --set postgresql.enabled="$postgres_enabled" \
+      --set postgresql.nameOverride="postgres" \
+      --set postgresql.postgresUser="$POSTGRES_USER" \
+      --set postgresql.postgresPassword="$POSTGRES_PASSWORD" \
+      --set postgresql.postgresDatabase="$POSTGRES_DB" \
+      --namespace="$KUBE_NAMESPACE" \
+      --version="$CI_PIPELINE_ID-$CI_JOB_ID" \
+      "$name" \
+      chart/
+  }
+
+  function install_dependencies() {
+    apk add -U openssl curl tar gzip bash ca-certificates git
+    wget -q -O /etc/apk/keys/sgerrand.rsa.pub https://raw.githubusercontent.com/sgerrand/alpine-pkg-glibc/master/sgerrand.rsa.pub
+    wget https://github.com/sgerrand/alpine-pkg-glibc/releases/download/2.23-r3/glibc-2.23-r3.apk
+    apk add glibc-2.23-r3.apk
+    rm glibc-2.23-r3.apk
+
+    curl https://kubernetes-helm.storage.googleapis.com/helm-v2.6.1-linux-amd64.tar.gz | tar zx
+    mv linux-amd64/helm /usr/bin/
+    helm version --client
+
+    curl -L -o /usr/bin/kubectl https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/linux/amd64/kubectl
+    chmod +x /usr/bin/kubectl
+    kubectl version --client
+  }
+
+  function setup_docker() {
+    if ! docker info &>/dev/null; then
+      if [ -z "$DOCKER_HOST" -a "$KUBERNETES_PORT" ]; then
+        export DOCKER_HOST='tcp://localhost:2375'
+      fi
+    fi
+  }
+
+  function setup_test_db() {
+    if [ -z ${KUBERNETES_PORT+x} ]; then
+      DB_HOST=postgres
+    else
+      DB_HOST=localhost
+    fi
+    export DATABASE_URL="postgres://${POSTGRES_USER}:${POSTGRES_PASSWORD}@${DB_HOST}:5432/${POSTGRES_DB}"
+  }
+
+  function download_chart() {
+    if [[ ! -d chart ]]; then
+      auto_chart=${AUTO_DEVOPS_CHART:-gitlab/auto-deploy-app}
+      auto_chart_name=$(basename $auto_chart)
+      auto_chart_name=${auto_chart_name%.tgz}
+    else
+      auto_chart="chart"
+      auto_chart_name="chart"
+    fi
+
+    helm init --client-only
+    helm repo add gitlab https://charts.gitlab.io
+    if [[ ! -d "$auto_chart" ]]; then
+      helm fetch ${auto_chart} --untar
+    fi
+    if [ "$auto_chart_name" != "chart" ]; then
+      mv ${auto_chart_name} chart
+    fi
+
+    helm dependency update chart/
+    helm dependency build chart/
+  }
+
+  function ensure_namespace() {
+    kubectl describe namespace "$KUBE_NAMESPACE" || kubectl create namespace "$KUBE_NAMESPACE"
+  }
+
+  function check_kube_domain() {
+    if [ -z ${AUTO_DEVOPS_DOMAIN+x} ]; then
+      echo "In order to deploy, AUTO_DEVOPS_DOMAIN must be set as a variable at the group or project level, or manually added in .gitlab-cy.yml"
+      false
+    else
+      true
+    fi
+  }
+
+  function build() {
+    if [[ -f Dockerfile ]]; then
+      echo "Building Dockerfile-based application..."
+      docker build -t "$CI_APPLICATION_REPOSITORY:$CI_APPLICATION_TAG" .
+    else
+      echo "Building Heroku-based application using gliderlabs/herokuish docker image..."
+      docker run -i --name="$CI_CONTAINER_NAME" -v "$(pwd):/tmp/app:ro" gliderlabs/herokuish /bin/herokuish buildpack build
+      docker commit "$CI_CONTAINER_NAME" "$CI_APPLICATION_REPOSITORY:$CI_APPLICATION_TAG"
+      docker rm "$CI_CONTAINER_NAME" >/dev/null
+      echo ""
+
+      echo "Configuring $CI_APPLICATION_REPOSITORY:$CI_APPLICATION_TAG docker image..."
+      docker create --expose 5000 --env PORT=5000 --name="$CI_CONTAINER_NAME" "$CI_APPLICATION_REPOSITORY:$CI_APPLICATION_TAG" /bin/herokuish procfile start web
+      docker commit "$CI_CONTAINER_NAME" "$CI_APPLICATION_REPOSITORY:$CI_APPLICATION_TAG"
+      docker rm "$CI_CONTAINER_NAME" >/dev/null
+      echo ""
+    fi
+
+    if [[ -n "$CI_REGISTRY_USER" ]]; then
+      echo "Logging to GitLab Container Registry with CI credentials..."
+      docker login -u "$CI_REGISTRY_USER" -p "$CI_REGISTRY_PASSWORD" "$CI_REGISTRY"
+      echo ""
+    fi
+
+    echo "Pushing to GitLab Container Registry..."
+    docker push "$CI_APPLICATION_REPOSITORY:$CI_APPLICATION_TAG"
+    echo ""
+  }
+
+  function install_tiller() {
+    echo "Checking Tiller..."
+    helm init --upgrade
+    kubectl rollout status -n "$TILLER_NAMESPACE" -w "deployment/tiller-deploy"
+    if ! helm version --debug; then
+      echo "Failed to init Tiller."
+      return 1
+    fi
+    echo ""
+  }
+
+  function create_secret() {
+    kubectl create secret -n "$KUBE_NAMESPACE" \
+      docker-registry gitlab-registry \
+      --docker-server="$CI_REGISTRY" \
+      --docker-username="$CI_REGISTRY_USER" \
+      --docker-password="$CI_REGISTRY_PASSWORD" \
+      --docker-email="$GITLAB_USER_EMAIL" \
+      -o yaml --dry-run | kubectl replace -n "$KUBE_NAMESPACE" --force -f -
+  }
+
+  function delete() {
+    track="${1-stable}"
+    name="$CI_ENVIRONMENT_SLUG"
+
+    if [[ "$track" != "stable" ]]; then
+      name="$name-$track"
+    fi
+
+    helm delete "$name" || true
+  }
+
+before_script:
+  - *auto_devops