From fd0707c148ee5a330033c8b571f8b4158e58125e Mon Sep 17 00:00:00 2001
From: Jeff Billimek <jeff@billimek.com>
Date: Sun, 4 Aug 2019 20:40:59 -0400
Subject: [PATCH] initial circleci import

---
 .circleci/config.yml       |  33 ++++++++++++
 .circleci/install_tools.sh |  21 ++++++++
 .circleci/release.sh       | 107 +++++++++++++++++++++++++++++++++++++
 3 files changed, 161 insertions(+)
 create mode 100644 .circleci/config.yml
 create mode 100755 .circleci/install_tools.sh
 create mode 100755 .circleci/release.sh

diff --git a/.circleci/config.yml b/.circleci/config.yml
new file mode 100644
index 00000000..b6b64f8d
--- /dev/null
+++ b/.circleci/config.yml
@@ -0,0 +1,33 @@
+version: 2
+jobs:
+  lint-scripts:
+    docker:
+      - image: koalaman/shellcheck-alpine
+    steps:
+      - checkout
+      - run:
+          name: lint
+          command: shellcheck -x .circleci/*.sh
+  release-charts:
+    machine: true
+    steps:
+      - checkout
+      - run:
+          command: |
+            echo "export GIT_REPOSITORY_URL=$CIRCLE_REPOSITORY_URL" >> $BASH_ENV
+            echo "export GIT_USERNAME=$CIRCLE_PROJECT_USERNAME" >> $BASH_ENV
+            echo "export GIT_REPOSITORY_NAME=$CIRCLE_PROJECT_REPONAME" >> $BASH_ENV
+            .circleci/install_tools.sh
+            .circleci/release.sh
+
+workflows:
+  version: 2
+  release:
+    jobs:
+      - lint-scripts
+      - release-charts:
+          filters:
+            tags:
+              ignore: /.*/
+            branches:
+              only: master
\ No newline at end of file
diff --git a/.circleci/install_tools.sh b/.circleci/install_tools.sh
new file mode 100755
index 00000000..7f886a9d
--- /dev/null
+++ b/.circleci/install_tools.sh
@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+
+set -o errexit
+
+readonly HELM_VERSION=2.13.1
+readonly CHART_RELEASER_VERSION=0.1.4
+
+echo "Installing Helm..."
+curl -LO "https://kubernetes-helm.storage.googleapis.com/helm-v$HELM_VERSION-linux-amd64.tar.gz"
+sudo mkdir -p "/usr/local/helm-v$HELM_VERSION"
+sudo tar -xzf "helm-v$HELM_VERSION-linux-amd64.tar.gz" -C "/usr/local/helm-v$HELM_VERSION"
+sudo ln -s "/usr/local/helm-v$HELM_VERSION/linux-amd64/helm" /usr/local/bin/helm
+rm -f "helm-v$HELM_VERSION-linux-amd64.tar.gz"
+helm init --client-only
+
+echo "Installing chart-releaser..."
+curl -LO "https://github.com/helm/chart-releaser/releases/download/v${CHART_RELEASER_VERSION}/chart-releaser_${CHART_RELEASER_VERSION}_Linux_x86_64.tar.gz"
+sudo mkdir -p "/usr/local/chart-releaser-v$CHART_RELEASER_VERSION"
+sudo tar -xzf "chart-releaser_${CHART_RELEASER_VERSION}_Linux_x86_64.tar.gz" -C "/usr/local/chart-releaser-v$CHART_RELEASER_VERSION"
+sudo ln -s "/usr/local/chart-releaser-v$CHART_RELEASER_VERSION/chart-releaser" /usr/local/bin/chart-releaser
+rm -f "chart-releaser_${CHART_RELEASER_VERSION}_Linux_x86_64.tar.gz"
diff --git a/.circleci/release.sh b/.circleci/release.sh
new file mode 100755
index 00000000..fb40bc57
--- /dev/null
+++ b/.circleci/release.sh
@@ -0,0 +1,107 @@
+#!/usr/bin/env bash
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+: "${CH_TOKEN:?Environment variable CH_TOKEN must be set}"
+: "${GIT_REPOSITORY_URL:?Environment variable GIT_REPO_URL must be set}"
+: "${GIT_USERNAME:?Environment variable GIT_USERNAME must be set}"
+: "${GIT_EMAIL:?Environment variable GIT_EMAIL must be set}"
+: "${GIT_REPOSITORY_NAME:?Environment variable GIT_REPOSITORY_NAME must be set}"
+
+readonly REPO_ROOT="${REPO_ROOT:-$(git rev-parse --show-toplevel)}"
+
+main() {
+    pushd "$REPO_ROOT" > /dev/null
+
+    echo "Fetching tags..."
+    git fetch --tags
+
+    local latest_tag
+    latest_tag=$(find_latest_tag)
+
+    local latest_tag_rev
+    latest_tag_rev=$(git rev-parse --verify "$latest_tag")
+    echo "$latest_tag_rev $latest_tag (latest tag)"
+
+    local head_rev
+    head_rev=$(git rev-parse --verify HEAD)
+    echo "$head_rev HEAD"
+
+    if [[ "$latest_tag_rev" == "$head_rev" ]]; then
+        echo "No code changes. Nothing to release."
+        exit
+    fi
+
+    rm -rf .deploy
+    mkdir -p .deploy
+
+    echo "Identifying changed charts since tag '$latest_tag'..."
+
+    local changed_charts=()
+    readarray -t changed_charts <<< "$(git diff --find-renames --name-only "$latest_tag_rev" -- charts | cut -d '/' -f 2 | uniq)"
+
+    if [[ -n "${changed_charts[*]}" ]]; then
+        for chart in "${changed_charts[@]}"; do
+            echo "Packaging chart '$chart'..."
+            package_chart "charts/$chart"
+        done
+
+        release_charts
+        sleep 5
+        update_index
+    else
+        echo "Nothing to do. No chart changes detected."
+    fi
+
+    popd > /dev/null
+}
+
+find_latest_tag() {
+    if ! git describe --tags --abbrev=0 2> /dev/null; then
+        git rev-list --max-parents=0 --first-parent HEAD
+    fi
+}
+
+package_chart() {
+    local chart="$1"
+    Helm dependency build "$chart"
+    Helm package "$chart" --destination .deploy
+}
+
+release_charts() {
+    chart-releaser upload -o "$GIT_USERNAME" -r "$GIT_REPOSITORY_NAME" -p .deploy
+}
+
+update_index() {
+    chart-releaser index -o "$GIT_USERNAME" -r "$GIT_REPOSITORY_NAME" -p .deploy/index.yaml
+
+    git config user.email "$GIT_EMAIL"
+    git config user.name "$GIT_USERNAME"
+
+    for file in charts/*/*.md; do
+        if [[ -e $file ]]; then
+            mkdir -p ".deploy/docs/$(dirname "$file")"
+            cp --force "$file" ".deploy/docs/$(dirname "$file")"
+        fi
+    done
+
+    git checkout gh-pages
+    cp --force .deploy/index.yaml index.yaml
+
+    if [[ -e ".deploy/docs/charts" ]]; then
+        mkdir -p charts
+        cp --force --recursive .deploy/docs/charts/* charts/
+    fi
+
+    git checkout master -- README.md
+
+    if ! git diff --quiet; then
+        git add .
+        git commit --message="Update index.yaml" --signoff
+        git push "$GIT_REPOSITORY_URL" gh-pages
+    fi
+}
+
+main