feat: generate Makefile with build, test, generate, and release targets

Adds a Makefile template to the controller generation pipeline so that
users can run codegen and release builds directly from the controller
repo without switching to the code-generator directory.

Author: michaelhtm

pkg/generate/ack/controller.go

@@ -331,6 +331,11 @@ func Controller(
 		return nil, err
 	}
 
+	// Add the Makefile template
+	if err = ts.Add("Makefile", "Makefile.tpl", metaVars); err != nil {
+		return nil, err
+	}
+
 	// Finally, add the configuration YAML file templates
 	for _, path := range controllerConfigTemplatePaths {
 		outPath := strings.TrimSuffix(path, ".tpl")

pkg/sdk/repo.go

@@ -75,13 +75,12 @@ func EnsureDir(fp string) (bool, error) {
 // isDirWriteable returns true if the supplied directory path is writeable,
 // false otherwise
 func isDirWriteable(fp string) bool {
-	testPath := filepath.Join(fp, "test")
-	f, err := os.Create(testPath)
+	f, err := os.CreateTemp(fp, ".ack-writeable-check-*")
 	if err != nil {
 		return false
 	}
 	f.Close()
-	os.Remove(testPath)
+	os.Remove(f.Name())
 	return true
 }
 

templates/Makefile.tpl

@@ -0,0 +1,65 @@
+# Code generated by ack-generate. DO NOT EDIT.
+#
+# Makefile for the ACK {{ .ServicePackageName }} controller.
+# Run 'make help' to see available targets.
+
+SHELL := /bin/bash
+
+SERVICE := {{ .ServicePackageName }}
+
+# Build configuration
+VERSION ?= $(shell git describe --tags --always --dirty 2>/dev/null || echo "v0.0.0")
+GITCOMMIT = $(shell git rev-parse HEAD)
+BUILDDATE = $(shell date -u +'%Y-%m-%dT%H:%M:%SZ')
+GO_LDFLAGS = -ldflags "-X main.version=$(VERSION) -X main.buildHash=$(GITCOMMIT) -X main.buildDate=$(BUILDDATE)"
+
+# Code generator — assumes the standard ACK workspace layout (../code-generator)
+CODE_GENERATOR_DIR ?= ../code-generator
+
+# Controller runtime configuration
+AWS_REGION ?= us-west-2
+
+.PHONY: all build test local-test ensure-codegen generate release run version help
+
+all: test
+
+build:              ## Build the controller binary
+	@go build $(GO_LDFLAGS) -o bin/controller cmd/controller/main.go
+
+test:               ## Run unit tests
+	@go test ./...
+
+local-test:         ## Run unit tests using go.local.mod
+	@go test -modfile=go.local.mod ./...
+
+ensure-codegen:
+	@if [ ! -d "$(CODE_GENERATOR_DIR)" ]; then \
+		echo "Error: code-generator not found at $(CODE_GENERATOR_DIR)"; \
+		echo "Clone it with: git clone https://github.com/aws-controllers-k8s/code-generator $(CODE_GENERATOR_DIR)"; \
+		exit 1; \
+	fi
+
+generate: ensure-codegen ## Regenerate controller code from the AWS SDK model
+	@$(MAKE) --no-print-directory -C $(CODE_GENERATOR_DIR) build-controller SERVICE=$(SERVICE)
+
+release: ensure-codegen ## Generate release artifacts (make release V=v1.2.4)
+	@[ -n "$(V)" ] || { echo "Error: version is required"; echo "Usage: make release V=v1.2.4"; exit 1; }
+	@$(MAKE) --no-print-directory -C $(CODE_GENERATOR_DIR) build-ack-generate
+	@RELEASE_VERSION=$(V) $(CODE_GENERATOR_DIR)/scripts/build-controller-release.sh $(SERVICE)
+
+run:                ## Run the controller locally (AWS_REGION=us-west-2)
+	@go run ./cmd/controller/main.go \
+		--aws-region=$(AWS_REGION) \
+		--enable-development-logging \
+		--log-level=debug
+
+version:            ## Print the current version
+	@echo $(VERSION)
+
+help:               ## Show this help
+	@echo "Usage: make [target]"
+	@echo ""
+	@echo "Targets:"
+	@grep -E '^[a-zA-Z_-]+:.*##' $(MAKEFILE_LIST) | awk 'BEGIN {FS = ":.*##"}; {printf "  \033[36m%-15s\033[0m %s\n", $$1, $$2}'
+
+-include Makefile.custom