From aa886e78d62e798aea53f0de3711970c158355df Mon Sep 17 00:00:00 2001
From: irbekrm <irbekrm@gmail.com>
Date: Thu, 6 Oct 2022 14:28:39 +0100
Subject: [PATCH] Adds a script to quickly generate latest SHAs

Signed-off-by: irbekrm <irbekrm@gmail.com>
---
 hack/latest-kubebuilder-shas.sh | 51 +++++++++++++++++++++++++++++++++
 make/tools.mk                   |  2 ++
 2 files changed, 53 insertions(+)
 create mode 100755 hack/latest-kubebuilder-shas.sh

diff --git a/hack/latest-kubebuilder-shas.sh b/hack/latest-kubebuilder-shas.sh
new file mode 100755
index 000000000..8e92485a2
--- /dev/null
+++ b/hack/latest-kubebuilder-shas.sh
@@ -0,0 +1,51 @@
+#!/usr/bin/env bash
+
+# Copyright 2022 The cert-manager Authors.
+#
+# 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 -eu -o pipefail
+
+# This script can be used to view the latest SHAs of kubebuilder-tools.
+# kubebuilder-tools can get re-pushed for the same version of Kubernetes, so the
+# SHAs can change https://kubernetes.slack.com/archives/CAR30FCJZ/p1665057725119059?thread_ts=1665057082.715119&cid=CAR30FCJZ
+
+if [ $# -ne 1 ]; 
+    then echo "error: incorrect number of args: usage ${0} <kubebuilder-tools-version>"
+    exit 1
+fi
+
+BINDIR="${BINDIR:-"_bin"}"
+
+version=$1
+
+kubebuilder_tools_storage_url="https://storage.googleapis.com/kubebuilder-tools/kubebuilder-tools"
+
+os_arches=("linux-amd64" "darwin-amd64" "darwin-arm64")
+
+output=$(printf "Kubebuilder tools SHAs for version %s:" "$version")
+
+for os_arch in ${os_arches[@]}; do
+  filePath="${BINDIR}/kubebuilder-tools-${version}-${os_arch}"
+  curl -L "${kubebuilder_tools_storage_url}-${version}-${os_arch}.tar.gz" \
+    -o "${filePath}"
+    shasum=$(sha256sum $filePath | cut -d ' ' -f1)
+    os_arch="${os_arch//$'-'/'_'}"
+    output=$(printf "%s\nKUBEBUILDER_TOOLS_%s_SHA256SUM=%s\n" "$output" "$os_arch" "$shasum")
+    rm -rf "${filePath}"
+done
+
+output=$(printf "%s\nYou can update the SHAs in ./make/tools.mk if needed.\nCheck https://github.com/kubernetes-sigs/kubebuilder/tree/tools-releases for latest changes that may have caused new binaries published for a version." "$output")
+
+echo "$output"
diff --git a/make/tools.mk b/make/tools.mk
index 6a1dc8e2c..5d44d6323 100644
--- a/make/tools.mk
+++ b/make/tools.mk
@@ -349,6 +349,8 @@ $(K8S_CODEGEN_TOOLS_DOWNLOADS): $(BINDIR)/downloaded/tools/%-gen@$(K8S_CODEGEN_V
 ############################
 # kubebuilder-tools assets #
 # kube-apiserver / etcd    #
+# The SHAs for the same version of kubebuilder tools can change as new versions are published for changes merged to https://github.com/kubernetes-sigs/kubebuilder/tree/tools-releases #
+# You can use ./hack/latest-kubebuilder-shas.sh <version> to get latest SHAs for a particular version of kubebuilder tools #
 ############################
 
 KUBEBUILDER_TOOLS_linux_amd64_SHA256SUM=c9796a0a13ccb79b77e3d64b8d3bb85a14fc850800724c63b85bf5bacbe0b4ba