releases: Adds make build-crds-yaml

Makefile

@@ -645,6 +645,10 @@ lint-kgateway-charts: ## Lint the kgateway charts
 	$(HELM) lint $(HELM_CHART_DIR)
 	$(HELM) lint $(HELM_CHART_DIR_CRD)
 
+.PHONY: build-crds-yaml
+build-crds-yaml: $(STAMP_DIR)/go-generate-apis ## Generate a single YAML file containing all kgateway CRDs suitable for use as a release artifact
+	./hack/build-crds-yaml.sh
+
 #----------------------------------------------------------------------------------
 # Release
 #----------------------------------------------------------------------------------

hack/boilerplate/boilerplate.yaml.txt

@@ -0,0 +1,13 @@
+# Copyright YEAR The Kgateway 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.

hack/build-crds-yaml.sh

@@ -0,0 +1,59 @@
+#!/usr/bin/env bash
+
+# This script generates a single YAML file containing all kgateway CRDs for
+# easy installation without Helm.
+#
+# Helm has a 1MiB size limitation on its HELM_DRIVER Secret that makes it
+# suboptimal for CRDs even if they are in their own chart in the templates/
+# directory.
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+readonly SCRIPT_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")"/.. && pwd)"
+readonly CRD_DIR="${SCRIPT_ROOT}/install/helm/kgateway-crds/templates"
+readonly OUTPUT_DIR="${SCRIPT_ROOT}/_output/release"
+readonly OUTPUT_FILE="${OUTPUT_DIR}/kgateway-crds.yaml"
+readonly YEAR=$(date +"%Y")
+
+mkdir -p "${OUTPUT_DIR}"
+
+# Start with the boilerplate
+cat "${SCRIPT_ROOT}/hack/boilerplate/boilerplate.yaml.txt" > "${OUTPUT_FILE}"
+
+# Replace YEAR placeholder with actual year
+if [[ "$OSTYPE" == "linux-gnu"* ]]; then
+    sed -i "s/YEAR/${YEAR}/g" "${OUTPUT_FILE}"
+elif [[ "$OSTYPE" == "darwin"* ]]; then
+    sed -i '' "s/YEAR/${YEAR}/g" "${OUTPUT_FILE}"
+else
+    echo "Unsupported OS: $OSTYPE"
+    exit 1
+fi
+
+# Add header comment
+cat << EOF >> "${OUTPUT_FILE}"
+#
+# kgateway CRDs install
+#
+# This file contains all CustomResourceDefinitions for kgateway.
+# To install: kubectl apply --server-side -f kgateway-crds.yaml
+#
+EOF
+
+# Append each CRD file
+for file in "${CRD_DIR}"/*.yaml; do
+    # Skip non-CRD files like NOTES.txt (though it's .txt so won't match)
+    if [[ ! -f "$file" ]]; then
+        continue
+    fi
+
+    echo "---" >> "${OUTPUT_FILE}"
+    echo "#" >> "${OUTPUT_FILE}"
+    echo "# Source: ${file#${SCRIPT_ROOT}/}" >> "${OUTPUT_FILE}"
+    echo "#" >> "${OUTPUT_FILE}"
+    cat "$file" >> "${OUTPUT_FILE}"
+done
+
+echo "Generated: ${OUTPUT_FILE}"