chore(ci): Include charts-only CI in this repo

.github/scripts/check-releasenotes.sh

@@ -0,0 +1,49 @@
+#!/usr/bin/env bash
+
+set -e
+
+# Check if release notes have been changed
+# Usage ./check-releasenotes.sh path
+
+# require yq
+command -v yq >/dev/null 2>&1 || {
+    printf >&2 "%s\n" "yq (https://github.com/mikefarah/yq) is not installed. Aborting."
+    exit 1
+}
+
+# Absolute path of repository
+repository=$(git rev-parse --show-toplevel)
+
+# Allow for a specific chart to be passed in as a argument
+if [ $# -ge 1 ] && [ -n "$1" ]; then
+    root="$1"
+    chart_file="${1}/Chart.yaml"
+    if [ ! -f "$chart_file" ]; then
+        printf >&2 "File %s\n does not exist.\n" "${chart_file}"
+        exit 1
+    fi
+
+    cd $root
+
+    if [ -z "$DEFAULT_BRANCH" ]; then
+      DEFAULT_BRANCH=$(git remote show origin | awk '/HEAD branch/ {print $NF}')
+    fi
+
+    CURRENT=$(cat Chart.yaml | yq e '.annotations."artifacthub.io/changes"' -P -)
+
+    if [ "$CURRENT" == "" ] || [ "$CURRENT" == "null" ]; then
+      printf >&2 "Changelog annotation has not been set in %s!\n" "$chart_file"
+      exit 1
+    fi
+
+    DEFAULT_BRANCH=$(git remote show origin | awk '/HEAD branch/ {print $NF}')
+    ORIGINAL=$(git show origin/$DEFAULT_BRANCH:./Chart.yaml | yq e '.annotations."artifacthub.io/changes"' -P -)
+
+    if [ "$CURRENT" == "$ORIGINAL" ]; then
+      printf >&2 "Changelog annotation has not been updated in %s!\n" "$chart_file"
+      exit 1
+    fi
+else
+    printf >&2 "%s\n" "No chart folder has been specified."
+    exit 1
+fi

.github/scripts/gen-helm-docs.sh

@@ -0,0 +1,47 @@
+#!/usr/bin/env bash
+set -eu
+
+# Generate helm-docs for Helm charts
+# Usage ./gen-helm-docs.sh [stable/incubator] [chart]
+
+# require helm-docs
+command -v helm-docs >/dev/null 2>&1 || {
+    echo >&2 "helm-docs (https://github.com/k8s-at-home/helm-docs) is not installed. Aborting."
+    exit 1
+}
+
+# Absolute path of repository
+repository=$(git rev-parse --show-toplevel)
+
+# Templates to copy into each chart directory
+readme_template="${repository}/hack/templates/README.md.gotmpl"
+readme_config_template="${repository}/hack/templates/README_CONFIG.md.gotmpl"
+
+# Gather all charts using the common library, excluding common-test
+charts=$(find "${repository}" -name "Chart.yaml")
+
+# Allow for a specific chart to be passed in as a argument
+if [ $# -ge 1 ] && [ -n "$1" ] && [ -n "$2" ]; then
+    charts="${repository}/charts/$1/$2/Chart.yaml"
+    root="$(dirname "${charts}")"
+    if [ ! -f "$charts" ]; then
+        echo "File ${charts} does not exist."
+        exit 1
+    fi
+else
+    root="${repository}/charts/stable"
+fi
+
+for chart in ${charts}; do
+    chart_directory="$(dirname "${chart}")"
+    echo "-] Copying templates to ${chart_directory}"
+    # Copy CONFIG template to each Chart directory, do not overwrite if exists
+    cp -n "${readme_config_template}" "${chart_directory}" || true
+done
+
+# Run helm-docs for charts using the common library and the common library itself
+helm-docs \
+    --ignore-file="${repository}/.helmdocsignore" \
+    --template-files="${readme_template}" \
+    --template-files="$(basename "${readme_config_template}")" \
+    --chart-search-root="${root}"

.github/scripts/renovate-releasenotes.sh

@@ -0,0 +1,52 @@
+#!/usr/bin/env bash
+
+set -e
+
+# Check if release notes have been changed
+# Usage ./check-releasenotes.sh path
+
+# require yq
+command -v yq >/dev/null 2>&1 || {
+    printf >&2 "%s\n" "yq (https://github.com/mikefarah/yq) is not installed. Aborting."
+    exit 1
+}
+
+# Allow for a specific chart to be passed in as a argument
+if [ $# -ge 1 ] && [ -n "$1" ]; then
+    root="$1"
+    chart_file="${1}/Chart.yaml"
+    if [ ! -f "$chart_file" ]; then
+        printf >&2 "File %s does not exist.\n" "${chart_file}"
+        exit 1
+    fi
+    cd "${root}"
+
+    if [ -z "$DEFAULT_BRANCH" ]; then
+      DEFAULT_BRANCH=$(git remote show origin | awk '/HEAD branch/ {print $NF}')
+    fi
+
+    printf "Updating changelog annotation for chart %s\n" "$root"
+
+    # Loop over all dependencies in current chart version
+    NEW_DEPENDENCIES=()
+    while IFS='' read -r line; do NEW_DEPENDENCIES+=("$line"); done < <(yq e '.dependencies[].name' -P Chart.yaml | LC_ALL=C sort)
+    OLD_DEPENDENCIES=$(git show "origin/$DEFAULT_BRANCH:./Chart.yaml" | yq e '.dependencies[].name' -P - | LC_ALL=C sort)
+
+    tmpfile=$(mktemp)
+    trap 'rm -f "$tmpfile"' EXIT
+
+    for DEP_NAME in "${NEW_DEPENDENCIES[@]}"
+    do
+      NEW_VERSION=$(yq e ".dependencies[] | select(.name == \"$DEP_NAME\") | .version" -P Chart.yaml)
+      OLD_VERSION=$(git show "origin/$DEFAULT_BRANCH:./Chart.yaml" | yq e ".dependencies[] | select(.name == \"$DEP_NAME\") | .version" -P -)
+      if [ "${NEW_VERSION}" != "${OLD_VERSION}" ]; then
+        printf "%s\n" "- kind: changed" >> "${tmpfile}"
+        printf "  description: Upgraded \`%s\` chart dependency to version \`%s\`.\n" "${DEP_NAME}" "${NEW_VERSION}" >> "${tmpfile}"
+      fi
+    done
+
+    yq eval-all --inplace 'select(fileIndex == 0).annotations."artifacthub.io/changes" = (select(fileIndex == 1) | to_yaml) | select(fileIndex==0)' Chart.yaml "${tmpfile}"
+else
+    printf >&2 "%s\n" "No chart folder has been specified."
+    exit 1
+fi