feat: functionality to change Docker tags and apply manifests (#35)

Author: felix-seifert

kubernetes/Makefile

@@ -0,0 +1,52 @@
+KUBECTL ?= kubectl
+K8S_RESOURCES_DIR := .
+
+# Arg APP is used to define applying resources only for specific app/subdir
+ifdef APP
+  TARGET_DIR := $(K8S_RESOURCES_DIR)/$(APP)
+else
+  TARGET_DIR := $(K8S_RESOURCES_DIR)
+endif
+
+.PHONY: apply-namespaces apply-all apply update-image
+
+.DEFAULT_GOAL := help
+
+apply-namespaces: ## Apply all namespaces defined in YAML files (of specific APP if specified)
+	@echo "Applying all manifests with kind Namespace from $(TARGET_DIR)/..."
+	@find $(TARGET_DIR) -type f -name "*.yaml" -o -name "*.yml" \
+		| xargs grep --files-with-matches "^kind: *Namespace" \
+		| xargs --no-run-if-empty $(KUBECTL) apply --filename
+
+apply-all: ## Apply all resources (also namespaces) defined in YAML files (of specific APP if specified)
+	@echo "Applying all Kubernetes manifests from $(TARGET_DIR)/..."
+	@$(KUBECTL) apply --filename $(TARGET_DIR)
+
+apply: apply-namespaces apply-all ## Apply first namespaces and then all resources defined in YAML files (of specific APP if specified)
+
+update-image: ## Update tag of given IMAGE to TAG of all resources defined in YAML files (of specific APP if specified)
+	@if [ -z "$(IMAGE)" ] || [ -z "$(TAG)" ]; then \
+		echo "Usage: make update-image IMAGE=<image> TAG=<tag> [APP=<app>]"; \
+		exit 1; \
+	fi
+	@echo "Updating image '$(IMAGE)' to tag '$(TAG)' in $(TARGET_DIR)/..."
+	@find $(TARGET_DIR) -type f -print0 -name "*.yaml" -o -name "*.yml" \
+		| xargs -0 grep --files-with-matches "image: *$(IMAGE):" \
+		| while read -r file; do \
+			old_image=$$(grep --only-matching --extended-regexp "$(IMAGE):[^ \"']+" "$$file" | head -n1); \
+			if [ -n "$$old_image" ]; then \
+				old_tag=$$(echo "$$old_image" | sed --regexp-extended 's|^$(IMAGE):||'); \
+				new_image="$(IMAGE):$(TAG)"; \
+				if [ "$$old_tag" = "$(TAG)" ]; then \
+					echo " → No change in $$file (already using $(IMAGE):\033[1;32m$(TAG)\033[0m)"; \
+				else \
+					highlight_old="$$(printf "%s:\033[1;31m%s\033[0m" "$(IMAGE)" "$$old_tag")"; \
+					highlight_new="$$(printf "%s:\033[1;32m%s\033[0m" "$(IMAGE)" "$(TAG)")"; \
+					sed --in-place --regexp-extended "s|$(IMAGE):[^ \"']+|$$new_image|g" "$$file"; \
+					echo " → Updated $$file: $$highlight_old → $$highlight_new"; \
+				fi; \
+			fi; \
+		done
+
+help: ## Show this help
+	@awk 'BEGIN {FS = ":.*?## "} /^[a-zA-Z0-9._-]+:.*?## / {printf "\033[1m\033[36m%-24s\033[0m %s\n", $$1, $$2}' $(MAKEFILE_LIST)