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refactor: workflows & renovate
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auricom
175
.github/scripts/helm-release-differ.sh
vendored
Executable file
175
.github/scripts/helm-release-differ.sh
vendored
Executable file
@@ -0,0 +1,175 @@
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#!/usr/bin/env bash
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# shellcheck source=/dev/null
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source "$(dirname "${0}")/lib/functions.sh"
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set -o errexit
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set -o nounset
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set -o pipefail
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shopt -s lastpipe
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show_help() {
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cat << EOF
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Usage: $(basename "$0") <options>
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-h, --help Display help
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--source-file Original helm release
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--target-file New helm release
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--remove-common-labels Remove common labels from manifests
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EOF
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}
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main() {
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local source_file=
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local target_file=
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local remove_common_labels=
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parse_command_line "$@"
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check "helm"
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check "yq"
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entry
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}
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parse_command_line() {
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while :; do
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case "${1:-}" in
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-h|--help)
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show_help
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exit
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;;
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--source-file)
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if [[ -n "${2:-}" ]]; then
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source_file="$2"
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shift
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else
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echo "ERROR: '--source-file' cannot be empty." >&2
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show_help
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exit 1
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fi
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;;
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--target-file)
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if [[ -n "${2:-}" ]]; then
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target_file="$2"
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shift
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else
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echo "ERROR: '--target-file' cannot be empty." >&2
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show_help
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exit 1
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fi
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;;
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--remove-common-labels)
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remove_common_labels=true
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;;
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*)
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break
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;;
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esac
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shift
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done
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if [[ -z "${source_file}" ]]; then
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echo "ERROR: '--source-file' is required." >&2
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show_help
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exit 1
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fi
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if [[ $(yq eval .kind "${source_file}" 2>/dev/null) != "HelmRelease" ]]; then
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echo "ERROR: '--source-file' is not a HelmRelease"
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show_help
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exit 1
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fi
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if [[ -z "${target_file}" ]]; then
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echo "ERROR: '--target-file' is required." >&2
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show_help
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exit 1
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fi
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if [[ $(yq eval .kind "${target_file}" 2>/dev/null) != "HelmRelease" ]]; then
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echo "ERROR: '--target-file' is not a HelmRelease"
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show_help
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exit 1
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fi
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if [[ -z "$remove_common_labels" ]]; then
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remove_common_labels=false
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fi
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}
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_resources() {
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local chart_name=${1}
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local chart_version=${2}
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local chart_registry_url=${3}
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local chart_values=${4}
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local resources=
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helm repo add main "${chart_registry_url}" > /dev/null 2>&1
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pushd "$(mktemp -d)" > /dev/null 2>&1
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helm pull "main/${chart_name}" --untar --version "${chart_version}"
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resources=$(echo "${chart_values}" | helm template "${chart_name}" "${chart_name}" --version "${chart_version}" -f -)
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if [[ "${remove_common_labels}" == "true" ]]; then
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labels='.metadata.labels."helm.sh/chart"'
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labels+=',.metadata.labels.chart'
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labels+=',.metadata.labels."app.kubernetes.io/version"'
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labels+=',.spec.template.metadata.labels."helm.sh/chart"'
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labels+=',.spec.template.metadata.labels.chart'
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labels+=',.spec.template.metadata.labels."app.kubernetes.io/version"'
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echo "${resources}" | yq eval "del($labels)" -
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else
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echo "${resources}"
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fi
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popd > /dev/null 2>&1
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helm repo remove main > /dev/null 2>&1
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}
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entry() {
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local comments=
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source_chart_name=$(chart_name "${source_file}")
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source_chart_version=$(chart_version "${source_file}")
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source_chart_registry_url=$(chart_registry_url "${source_file}")
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source_chart_values=$(chart_values "${source_file}")
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source_resources=$(_resources "${source_chart_name}" "${source_chart_version}" "${source_chart_registry_url}" "${source_chart_values}")
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echo "${source_resources}" > /tmp/source_resources
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target_chart_version=$(chart_version "${target_file}")
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target_chart_name=$(chart_name "${target_file}")
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target_chart_registry_url=$(chart_registry_url "${target_file}")
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target_chart_values=$(chart_values "${target_file}")
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target_resources=$(_resources "${target_chart_name}" "${target_chart_version}" "${target_chart_registry_url}" "${target_chart_values}")
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echo "${target_resources}" > /tmp/target_resources
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# Diff the files and always return true
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diff -u /tmp/source_resources /tmp/target_resources > /tmp/diff || true
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# Remove the filenames
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sed -i -e '1,2d' /tmp/diff
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# Store the comment in an array
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comments=()
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# shellcheck disable=SC2016
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comments+=( "$(printf 'Path: `%s`' "${target_file}")" )
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if [[ "${source_chart_name}" != "${target_chart_name}" ]]; then
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# shellcheck disable=SC2016
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comments+=( "$(printf 'Chart: `%s` -> `%s`' "${source_chart_name}" "${target_chart_name}")" )
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fi
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if [[ "${source_chart_version}" != "${target_chart_version}" ]]; then
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# shellcheck disable=SC2016
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comments+=( "$(printf 'Version: `%s` -> `%s`' "${source_chart_version}" "${target_chart_version}")" )
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fi
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if [[ "${source_chart_registry_url}" != "${target_chart_registry_url}" ]]; then
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# shellcheck disable=SC2016
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comments+=( "$(printf 'Registry URL: `%s` -> `%s`' "${source_chart_registry_url}" "${target_chart_registry_url}")" )
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fi
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comments+=( "$(printf '\n\n')" )
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if [[ -f /tmp/diff && -s /tmp/diff ]]; then
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# shellcheck disable=SC2016
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comments+=( "$(printf '```diff\n%s\n```' "$(cat /tmp/diff)")" )
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else
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# shellcheck disable=SC2016
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comments+=( "$(printf '```\nNo changes in detected in resources\n```')" )
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fi
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# Join the array with a new line and print it
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printf "%s\n" "${comments[@]}"
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}
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main "$@"
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