Allow for excluding CRD template files

Signed-off-by: Erik Godding Boye <egboye@gmail.com>

Author: erikgb

modules/helm/crds.mk

@@ -40,6 +40,18 @@ endif
 crds_dir ?= deploy/crds
 crds_dir_readme := $(dir $(lastword $(MAKEFILE_LIST)))/crds_dir.README.md
 crds_expression ?= .Values.crds.enabled
+crds_template_include_pattern := *.yaml
+# Space-separated list of basenames to exclude (e.g. foo.yaml *_test.yaml)
+crds_template_exclude_pattern ?=
+
+define filter-out-basenames
+  $(if $(strip $(2)), \
+    $(foreach f,$(1),$(if $(filter $(2),$(notdir $(f))),,$(f))), \
+    $(1))
+endef
+define crd-template-path
+$(helm_chart_source_dir)/templates/crd-$(1)
+endef
 
 .PHONY: generate-crds
 ## Generate CRD manifests.
@@ -57,14 +69,20 @@ generate-crds: | $(NEEDS_CONTROLLER-GEN) $(NEEDS_YQ)
 
 	@echo "Updating CRDs with helm templating, writing to $(helm_chart_source_dir)/templates"
 
-	@for i in $$(ls $(crds_gen_temp)); do \
-		crd_name=$$($(YQ) eval '.metadata.name' $(crds_gen_temp)/$$i); \
-		cat $(crd_template_header) > $(helm_chart_source_dir)/templates/crd-$$i; \
-		$(sed_inplace) "s/REPLACE_CRD_EXPRESSION/$(crds_expression)/g" $(helm_chart_source_dir)/templates/crd-$$i; \
-		$(sed_inplace) "s/REPLACE_CRD_NAME/$$crd_name/g" $(helm_chart_source_dir)/templates/crd-$$i; \
-		$(sed_inplace) "s/REPLACE_LABELS_TEMPLATE/$(helm_labels_template_name)/g" $(helm_chart_source_dir)/templates/crd-$$i; \
-		$(YQ) -I2 '{"spec": .spec}' $(crds_gen_temp)/$$i >> $(helm_chart_source_dir)/templates/crd-$$i; \
-		cat $(crd_template_footer) >> $(helm_chart_source_dir)/templates/crd-$$i; \
+	$(eval crds_gen_temp_all_files := $(wildcard $(crds_gen_temp)/$(crds_template_include_pattern)))
+	$(eval crds_gen_temp_files := $(if $(crds_template_exclude_pattern), \
+		$(call filter-out-basenames,$(crds_gen_temp_all_files),$(crds_template_exclude_pattern)), \
+		$(crds_gen_temp_all_files)))
+
+	@for i in $(crds_gen_temp_files); do \
+		crd_name=$$($(YQ) eval '.metadata.name' $$i); \
+		crd_template_file="$(call crd-template-path,$$(basename $$i))"; \
+		cat $(crd_template_header) > $$crd_template_file; \
+		$(sed_inplace) "s/REPLACE_CRD_EXPRESSION/$(crds_expression)/g" $$crd_template_file; \
+		$(sed_inplace) "s/REPLACE_CRD_NAME/$$crd_name/g" $$crd_template_file; \
+		$(sed_inplace) "s/REPLACE_LABELS_TEMPLATE/$(helm_labels_template_name)/g" $$crd_template_file; \
+		$(YQ) -I2 '{"spec": .spec}' $$i >> $$crd_template_file; \
+		cat $(crd_template_footer) >> $$crd_template_file; \
 	done
 
 	@if [ -n "$$(ls $(crds_gen_temp) 2>/dev/null)" ]; then \