Makefile

# Setting SHELL to bash allows bash commands to be executed by recipes.
# This is a requirement for 'setup-envtest.sh' in the test target.
# Options are set to exit when a recipe line exits non-zero or a piped command fails.
SHELL = /usr/bin/env bash -o pipefail
.SHELLFLAGS = -ec

########################################################################################################################
### VARIABLES
########################################################################################################################
MAIN_DIR := src

# Image URL to use all building/pushing image targets
VERSION ?= latest
IMG ?= prosimcorp/cluster-autoscaler-status-exporter:v${VERSION}
PLATFORM ?= linux/amd64
# ENVTEST_K8S_VERSION refers to the version of kubebuilder assets to be downloaded by envtest binary.
ENVTEST_K8S_VERSION = 1.23

# Get the currently used golang install path (in GOPATH/bin, unless GOBIN is set)
ifeq (,$(shell go env GOBIN))
GOBIN=$(shell go env GOPATH)/bin
else
GOBIN=$(shell go env GOBIN)
endif

.PHONY: all
all: build docker-build

.PHONY: help
help: ## Display this help.
	@awk 'BEGIN {FS = ":.*##"; printf "\nUsage:\n  make \033[36m<target>\033[0m\n"} /^[a-zA-Z_0-9-]+:.*?##/ { printf "  \033[36m%-15s\033[0m %s\n", $$1, $$2 } /^##@/ { printf "\n\033[1m%s\033[0m\n", substr($$0, 5) } ' $(MAKEFILE_LIST)

########################################################################################################################
### DEVELOPMENT COMMANDS
########################################################################################################################
.PHONY: fmt
fmt: ## Run go fmt against code.
	@cd src && go fmt .

.PHONY: vet
vet: ## Run go vet against code.
	@cd src && go vet .

.PHONY: test
test: fmt vet ## Run tests.

run:
	cd src/ && go run .

########################################################################################################################
### BUILD COMMANDS
########################################################################################################################
build: fmt vet ## Build manager binary.
	cd src/ && go mod tidy && go build -o ../bin/manager .

# If you wish built the manager image targeting other platforms you can use the --platform flag.
# (i.e. docker build --platform linux/arm64 ). However, you must enable docker buildKit for it.
# More info: https://docs.docker.com/develop/develop-images/build_enhancements/
.PHONY: docker-build
docker-build: test ## Build docker image with the manager.
	docker build -t ${IMG} .

.PHONY: docker-push
docker-push: ## Push docker image with the manager.
	docker push ${IMG}

# PLATFORMS defines the target platforms for  the manager image be build to provide support to multiple
# architectures. (i.e. make docker-buildx IMG=myregistry/mypoperator:0.0.1). To use this option you need to:
# - able to use docker buildx . More info: https://docs.docker.com/build/buildx/
# - have enable BuildKit, More info: https://docs.docker.com/develop/develop-images/build_enhancements/
# - be able to push the image for your registry (i.e. if you do not inform a valid value via IMG=<myregistry/image:<tag>> than the export will fail)
# To properly provided solutions that supports more than one platform you should use this option.
PLATFORMS ?= linux/arm64,linux/amd64,linux/s390x,linux/ppc64le
.PHONY: docker-buildx
docker-buildx: test
	# copy existing Dockerfile and insert --platform=${BUILDPLATFORM} into Dockerfile.cross, and preserve the original Dockerfile
	sed -e '1 s/\(^FROM\)/FROM --platform=\$$\{BUILDPLATFORM\}/; t' -e ' 1,// s//FROM --platform=\$$\{BUILDPLATFORM\}/' Dockerfile > Dockerfile.cross
	- docker buildx create --name project-builder
	docker buildx use project-builder
	- docker buildx build --push --platform=$(PLATFORMS) --tag ${IMG} -f Dockerfile.cross .
	- docker buildx rm project-builder
	rm Dockerfile.cross



########################################################################################################################
### CLEAN COMMANDS
########################################################################################################################
clean:
	rm -r ./tmp