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generate-crds.sh
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generate-crds.sh
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#!/usr/bin/env bash
#
# Copyright 2021 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
set -o errexit
set -o nounset
set -o pipefail
# Usage:
# generate-crds.sh <file-name-prefix> [<group> ...]
# Generate manifests for all CRDs to the current working directory.
# Useful for development purposes.
#
# <file-name-prefix> File name prefix for manifest files (e.g. '10-crd-')
# -l (Optional) If -l argument is given then the generated CRDs will have label gardener.cloud/deletion-protected: "true"
# <group> List of groups to generate (generate all if unset)
if ! command -v controller-gen &> /dev/null ; then
>&2 echo "controller-gen not available"
exit 1
fi
output_dir="$(pwd)"
file_name_prefix="$1"
add_deletion_protection_label=false
crd_options=""
get_group_package () {
case "$1" in
"extensions.gardener.cloud")
echo "github.com/gardener/gardener/pkg/apis/extensions/v1alpha1"
;;
"resources.gardener.cloud")
echo "github.com/gardener/gardener/pkg/apis/resources/v1alpha1"
;;
"operator.gardener.cloud")
echo "github.com/gardener/gardener/pkg/apis/operator/v1alpha1"
;;
"druid.gardener.cloud")
echo "github.com/gardener/etcd-druid/api/v1alpha1"
;;
"autoscaling.k8s.io")
echo "github.com/gardener/hvpa-controller/api/v1alpha1"
;;
"fluentbit.fluent.io")
echo "github.com/fluent/fluent-operator/v2/apis/fluentbit/v1alpha2"
;;
"machine.sapcloud.io")
echo "github.com/gardener/machine-controller-manager/pkg/apis/machine/v1alpha1"
;;
*)
>&2 echo "unknown group $1"
return 1
esac
}
generate_all_groups () {
generate_group extensions.gardener.cloud
generate_group resources.gardener.cloud
generate_group operator.gardener.cloud
generate_group druid.gardener.cloud
generate_group autoscaling.k8s.io
generate_group fluentbit.fluent.io
generate_group machine.sapcloud.io
}
generate_group () {
local group="$1"
echo "Generating CRDs for $group group"
local package="$(get_group_package "$group")"
if [ -z "$package" ] ; then
exit 1
fi
local package_path="$(go list -f '{{ .Dir }}' "$package")"
if [ -z "$package_path" ] ; then
exit 1
fi
# clean all generated files for this group to account for changed prefix or removed resources
if ls "$output_dir"/*${group}_*.yaml >/dev/null 2>&1; then
rm "$output_dir"/*${group}_*.yaml
fi
controller-gen crd"$crd_options" paths="$package_path" output:crd:dir="$output_dir" output:stdout
while IFS= read -r crd; do
crd_out="$output_dir/$file_name_prefix$(basename $crd)"
if [ "$crd" != "$crd_out" ]; then
mv "$crd" "$crd_out"
fi
if $add_deletion_protection_label; then
if grep -q "clusters.extensions.gardener.cloud" "$crd_out"; then
:
else
sed -i '4 a\ labels:\n\ gardener.cloud/deletion-protected: "true"' "$crd_out"
fi
fi
# TODO(plkokanov): this is needed to add the `api-approved.kubernetes.io` annotaiton to resource from the *.k8s.io api group generated by controller-gen
# Currently there is an issue open to do that automatically: https://github.com/kubernetes-sigs/controller-tools/issues/656
if [[ ${group} =~ .*\.k8s\.io ]]; then
sed -i '/^ annotations:.*/a\ api-approved.kubernetes.io: unapproved, temporarily squatting' "$crd_out"
fi
done < <(ls "$output_dir/${group}"_*.yaml)
}
if [ -n "${2:-}" ]; then
if [ "${2}" == "-l" ]; then
add_deletion_protection_label=true
if [ -n "${3:-}" ]; then
while [ -n "${3:-}" ] ; do
generate_group "$3"
shift
done
else
generate_all_groups
fi
elif [ "${2}" == "-allow-dangerous-types" ]; then
crd_options=":allowDangerousTypes=true"
if [ -n "${3:-}" ]; then
while [ -n "${3:-}" ] ; do
generate_group "$3"
shift
done
else
generate_all_groups
fi
else
while [ -n "${2:-}" ] ; do
generate_group "$2"
shift
done
fi
else
generate_all_groups
fi