Makefile

# 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

# 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

all: build

##@ General

# The help target prints out all targets with their descriptions organized
# beneath their categories. The categories are represented by '##@' and the
# target descriptions by '##'. The awk commands is responsible for reading the
# entire set of makefiles included in this invocation, looking for lines of the
# file as xyz: ## something, and then pretty-format the target and help. Then,
# if there's a line with ##@ something, that gets pretty-printed as a category.
# More info on the usage of ANSI control characters for terminal formatting:
# https://en.wikipedia.org/wiki/ANSI_escape_code#SGR_parameters
# More info on the awk command:
# http://linuxcommand.org/lc3_adv_awk.php

.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)

.PHONY: fmt
fmt: goimports ## Run goimports against code.
	$(GOIMPORTS) -w .

.PHONY: vet
vet: ## Run go vet against code.
	go vet ./...

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

.PHONY: check
check: check-license # Check project

.PHONY: add-license
add-license: addlicense ## Add license headers to all go files.
	find . -name '*.go' -exec $(ADDLICENSE) -f hack/license-header.txt {} +

.PHONY: check-license
check-license: addlicense ## Check that every file has a license header present.
	find . -name '*.go' -exec $(ADDLICENSE) -check -c 'IronCore authors' {} +

##@ Tools

## Location to install dependencies to
LOCALBIN ?= $(shell pwd)/bin
$(LOCALBIN):
	mkdir -p $(LOCALBIN)

## Tool Binaries
ADDLICENSE ?= $(LOCALBIN)/addlicense
GOIMPORTS ?= $(LOCALBIN)/goimports
GOLANGCI_LINT ?= $(LOCALBIN)/golangci-lint

## Tool Versions
ADDLICENSE_VERSION ?= v1.1.1
GOIMPORTS_VERSION ?= v0.13.0
GOLANGCI_LINT_VERSION ?= v1.55.2

.PHONY: addlicense
addlicense: $(ADDLICENSE) ## Download addlicense locally if necessary.
$(ADDLICENSE): $(LOCALBIN)
	test -s $(LOCALBIN)/addlicense || GOBIN=$(LOCALBIN) go install github.com/google/addlicense@$(ADDLICENSE_VERSION)

.PHONY: goimports
goimports: $(GOIMPORTS) ## Download goimports locally if necessary.
$(GOIMPORTS): $(LOCALBIN)
	test -s $(LOCALBIN)/goimports || GOBIN=$(LOCALBIN) go install golang.org/x/tools/cmd/goimports@$(GOIMPORTS_VERSION)

.PHONY: golangci-lint
golangci-lint: $(GOLANGCI_LINT) ## Download golangci-lint locally if necessary.
$(GOLANGCI_LINT): $(LOCALBIN)
	test -s $(LOCALBIN)/golangci-lint || GOBIN=$(LOCALBIN) go install github.com/golangci/golangci-lint/cmd/golangci-lint@$(GOLANGCI_LINT_VERSION)

##@ Build

.PHONY: build
build: fmt vet ## Build binary.
	go build -o bin/prometheus-dpdk-exporter main.go

.PHONY: install
install:
	go install .

.PHONY: run
run: fmt golangci-lint ## Run exporter from your host.
	go run ./main.go

.PHONY: release
release: fmt lint
	goreleaser release --snapshot --rm-dist