Makefile

TMP_DIRECTORY = ./tmp
CHARTS ?= opentelemetry-collector opentelemetry-operator opentelemetry-demo opentelemetry-ebpf opentelemetry-kube-stack
OPERATOR_APP_VERSION ?= "$(shell cat ./charts/opentelemetry-operator/Chart.yaml | sed -nr 's/appVersion: ([0-9]+\.[0-9]+\.[0-9]+)/\1/p')"

.PHONY: generate-examples
generate-examples:
	for chart_name in $(CHARTS); do \
		helm dependency build charts/$${chart_name}; \
		EXAMPLES_DIR=charts/$${chart_name}/examples; \
		EXAMPLES=$$(find $${EXAMPLES_DIR} -type d -maxdepth 1 -mindepth 1 -exec basename \{\} \;); \
		for example in $${EXAMPLES}; do \
			echo "Generating example: $${example}"; \
			VALUES=$$(find $${EXAMPLES_DIR}/$${example} -name *values.yaml); \
			rm -rf "$${EXAMPLES_DIR}/$${example}/rendered"; \
			for value in $${VALUES}; do \
				helm template example charts/$${chart_name} --namespace default --values $${value} --output-dir "$${EXAMPLES_DIR}/$${example}/rendered"; \
				mv $${EXAMPLES_DIR}/$${example}/rendered/$${chart_name}/templates/* "$${EXAMPLES_DIR}/$${example}/rendered"; \
				SUBCHARTS_DIR=$${EXAMPLES_DIR}/$${example}/rendered/$${chart_name}/charts; \
				if [ -d "$${SUBCHARTS_DIR}" ]; then \
					SUBCHARTS=$$(find $${SUBCHARTS_DIR} -type d -maxdepth 1 -mindepth 1 -exec basename \{\} \;); \
					for subchart in $${SUBCHARTS}; do \
						mkdir -p "$${EXAMPLES_DIR}/$${example}/rendered/$${subchart}"; \
						mv $${SUBCHARTS_DIR}/$${subchart}/templates/* "$${EXAMPLES_DIR}/$${example}/rendered/$${subchart}"; \
					done; \
				fi; \
				rm -rf $${EXAMPLES_DIR}/$${example}/rendered/$${chart_name}; \
			done; \
		done; \
	done

.PHONY: check-examples
check-examples:
	for chart_name in $(CHARTS); do \
		EXAMPLES_DIR=charts/$${chart_name}/examples; \
		EXAMPLES=$$(find $${EXAMPLES_DIR} -type d -maxdepth 1 -mindepth 1 -exec basename \{\} \;); \
		for example in $${EXAMPLES}; do \
			echo "Checking example: $${example}"; \
			VALUES=$$(find $${EXAMPLES_DIR}/$${example} -name *values.yaml); \
			for value in $${VALUES}; do \
				helm dependency build charts/$${chart_name}; \
				helm template example charts/$${chart_name} --namespace default --values $${value} --output-dir "${TMP_DIRECTORY}/$${example}"; \
				SUBCHARTS_DIR=${TMP_DIRECTORY}/$${example}/$${chart_name}/charts; \
				SUBCHARTS=$$(find $${SUBCHARTS_DIR} -type d -maxdepth 1 -mindepth 1 -exec basename \{\} \;); \
				for subchart in $${SUBCHARTS}; do \
					mkdir -p "${TMP_DIRECTORY}/$${example}/$${chart_name}/templates/$${subchart}"; \
					mv ${TMP_DIRECTORY}/$${example}/$${chart_name}/charts/$${subchart}/templates/* "${TMP_DIRECTORY}/$${example}/$${chart_name}/templates/$${subchart}"; \
				done; \
			done; \
			if diff -r "$${EXAMPLES_DIR}/$${example}/rendered" "${TMP_DIRECTORY}/$${example}/$${chart_name}/templates" > /dev/null; then \
				echo "Passed $${example}"; \
			else \
				diff -r "$${EXAMPLES_DIR}/$${example}/rendered" "${TMP_DIRECTORY}/$${example}/$${chart_name}/templates"; \
				echo "Failed $${example}. run 'make generate-examples' to re-render the example with the latest $${example}/values.yaml"; \
				rm -rf ${TMP_DIRECTORY}; \
				exit 1; \
			fi; \
			rm -rf ${TMP_DIRECTORY}; \
		done; \
	done

.PHONY: update-operator-crds
update-operator-crds:
	$(call get-crd,./charts/opentelemetry-operator/conf/crds/crd-opentelemetrycollector.yaml,https://raw.githubusercontent.com/open-telemetry/opentelemetry-operator/v$(OPERATOR_APP_VERSION)/bundle/manifests/opentelemetry.io_opentelemetrycollectors.yaml)
	$(call get-crd,./charts/opentelemetry-operator/conf/crds/crd-opentelemetryinstrumentation.yaml,https://raw.githubusercontent.com/open-telemetry/opentelemetry-operator/v$(OPERATOR_APP_VERSION)/bundle/manifests/opentelemetry.io_instrumentations.yaml)
	$(call get-crd,./charts/opentelemetry-operator/conf/crds/crd-opentelemetry.io_opampbridges.yaml,https://raw.githubusercontent.com/open-telemetry/opentelemetry-operator/v$(OPERATOR_APP_VERSION)/bundle/manifests/opentelemetry.io_opampbridges.yaml)

.PHONY: check-operator-crds
check-operator-crds:
	mkdir -p ${TMP_DIRECTORY}/crds
	$(call get-crd,${TMP_DIRECTORY}/crds/crd-opentelemetrycollector.yaml,https://raw.githubusercontent.com/open-telemetry/opentelemetry-operator/v$(OPERATOR_APP_VERSION)/bundle/manifests/opentelemetry.io_opentelemetrycollectors.yaml)
	$(call get-crd,${TMP_DIRECTORY}/crds/crd-opentelemetryinstrumentation.yaml,https://raw.githubusercontent.com/open-telemetry/opentelemetry-operator/v$(OPERATOR_APP_VERSION)/bundle/manifests/opentelemetry.io_instrumentations.yaml)
	$(call get-crd,${TMP_DIRECTORY}/crds/crd-opentelemetry.io_opampbridges.yaml,https://raw.githubusercontent.com/open-telemetry/opentelemetry-operator/v$(OPERATOR_APP_VERSION)/bundle/manifests/opentelemetry.io_opampbridges.yaml)
	if diff ${TMP_DIRECTORY}/crds ./charts/opentelemetry-operator/conf/crds > /dev/null; then \
		echo "Passed"; \
		rm -rf ${TMP_DIRECTORY}; \
	else \
		echo "Failed. run 'make update-operator-crds' to update the crds"; \
		rm -rf ${TMP_DIRECTORY}; \
		exit 1; \
	fi; \

define get-crd
@curl -s -o $(1) $(2)
@sed -i '\#path: /convert#a {{ if .caBundle }}{{ cat "caBundle:" .caBundle | indent 8 }}{{ end }}' $(1)
@sed -i 's#opentelemetry-operator-system/opentelemetry-operator-serving-cert#{{ include "opentelemetry-operator.webhookCertAnnotation" . }}#g' $(1)
@sed -i "s/opentelemetry-operator-system/{{ .Release.Namespace }}/g" $(1)
@sed -i 's/opentelemetry-operator-webhook-service/{{ template "opentelemetry-operator.fullname" . }}-webhook/g' $(1)
@sed -i '1s/^/{{- if .Values.crds.create }}\n/' $(1)
@sed -i 's#\(.*\)path: /convert#&\n\1port: {{ .Values.admissionWebhooks.servicePort }}#' $(1)
@echo '{{- end }}' >> $(1)
endef