Makefile.docker

# See `Makefile` for details.
# vim: sw=8

IS_CONTAINER := $(shell test -d /go && echo isContainer)

ifndef IS_CONTAINER
    $(error "This Makefile must be used inside the godev container.")
endif

# The BUILD_TAG logic is duplicated from Makefile.  In a dev workspace, the
# build tag is usually set by Makefile.  But a CI workspace might directly use
# Makefile.docker.
ifndef BUILD_TAG
GIT_COMMIT_TAG := $(shell \
    TZ=UTC git show -s \
	 --date=format-local:%Y%m%dT%H%M%SZ --abbrev=6 --pretty=%cd-g%h \
)
GIT_DIRTY := $(shell \
    if [ -n "$$(git status -s)" ]; then echo "-dirty"; fi \
)
BUILD_DATE := $(shell \
    date -u +%s \
)
BUILD_TAG := $(GIT_COMMIT_TAG)-b$(BUILD_DATE)$(GIT_DIRTY)
endif

# Semvers are maintained in a file, so that they can be kept in sync with the
# changelog.  The build tag is received from `Makefile`, where it is determined
# from the host Git workspace.
BCPFS_PERMS_VERSION := $(shell \
    grep '^bcpfs-perms:' versions.yml | cut -d : -f 2 | tr -d ' ' \
)
BCPFS_CHOWN_VERSION := $(shell \
    grep '^bcpfs-chown:' versions.yml | cut -d : -f 2 | tr -d ' ' \
)
BCPSUCD_VERSION := $(shell \
    grep '^bcpsucd:' versions.yml | cut -d : -f 2 | tr -d ' ' \
)
BCPCTL_VERSION := $(shell \
    grep '^bcpctl:' versions.yml | cut -d : -f 2 | tr -d ' ' \
)

GOFLAGS := -ldflags "\
    -X github.com/nogproject/bcpfs/cmd/bcpfs-perms/v.Version=$(BCPFS_PERMS_VERSION) \
    -X github.com/nogproject/bcpfs/cmd/bcpfs-perms/v.Build=$(BUILD_TAG) \
    -X github.com/nogproject/bcpfs/cmd/bcpsucd/v.Version=$(BCPSUCD_VERSION) \
    -X github.com/nogproject/bcpfs/cmd/bcpsucd/v.Build=$(BUILD_TAG) \
    -X github.com/nogproject/bcpfs/cmd/bcpctl/v.Version=$(BCPCTL_VERSION) \
    -X github.com/nogproject/bcpfs/cmd/bcpctl/v.Build=$(BUILD_TAG) \
    "

# See <https://blog.docker.com/2016/09/docker-golang/> for netgo build.
GOFLAGS_STATIC := -ldflags "\
    -extldflags -static \
    -X github.com/nogproject/bcpfs/cmd/bcpfs-perms/v.Version=$(BCPFS_PERMS_VERSION) \
    -X github.com/nogproject/bcpfs/cmd/bcpfs-perms/v.Build=$(BUILD_TAG) \
    -X github.com/nogproject/bcpfs/cmd/bcpsucd/v.Version=$(BCPSUCD_VERSION) \
    -X github.com/nogproject/bcpfs/cmd/bcpsucd/v.Build=$(BUILD_TAG) \
    -X github.com/nogproject/bcpfs/cmd/bcpctl/v.Version=$(BCPCTL_VERSION) \
    -X github.com/nogproject/bcpfs/cmd/bcpctl/v.Build=$(BUILD_TAG) \
    " \
    -tags netgo -installsuffix netgo

GOPKGS := ./pkg/... ./internal/... ./cmd/...

BINARIES := bcpfs-perms bcpsucd bcpctl

# Use `find` with excludes to list only our `.proto` files.
PROTO_PB_GO := $(shell \
    find . \
	-path ./vendor -prune \
	-o -name '*.proto' -print \
    | sed -e 's/\.proto$$/\.pb.go/' \
)

.PHONY: install
install: pbgo
	@echo '    GO INSTALL'
	go install $(GOFLAGS) -v $(GOPKGS)

.PHONY: binaries
binaries: pbgo
	@echo '    GO INSTALL static (rebuild)'
	go install $(GOFLAGS_STATIC) -v -a $(GOPKGS)
	@echo '    CP $(addprefix product/bin/, $(BINARIES))'
	@tar -C /go/bin --xform 's,^,product/bin/,' -cf- $(BINARIES) \
	| tar -xvf-
	@echo '    GEN product/bin/bcpfs-chown'
	@cat bin/bcpfs-chown \
	| sed -e "s/^semver=.*/semver='$(BCPFS_CHOWN_VERSION)+$(BUILD_TAG)'/" \
	| install -m 0755 /dev/stdin product/bin/bcpfs-chown

.PHONY: deb
deb: binaries
	@./tools/bin/make-deb

.PHONY: clean
clean:
	@echo '    GO CLEAN'
	go clean ${GOFLAGS} -i $(GOPKGS)
	@echo '    RM *.pb.go'
	@find . \
	    -path ./vendor -prune \
	    -o -name '*.pb.go' -exec rm -fv '{}' ';'
	@echo '    RM vendor/'
	@rm -rf vendor/

.PHONY: vet
vet:
	@echo '    GO VET'
	go vet $(GOPKGS)

.PHONY: test
test:
	@echo '    GO TEST'
	go test $(GOPKGS)

.PHONY: errcheck
errcheck:
	@echo '    ERRCHECK'
	errcheck $(GOPKGS)

# Implicit rules for protoc.
#
# Example protoc call:
#
# ```
# cd pkg/hello && protoc --go_out=plugins=grpc:. hello.proto
# ```
#
# See <https://www.gnu.org/software/make/manual/make.html#Automatic-Variables>
# for variables in implicit rules.
pbgo: $(PROTO_PB_GO)

%.pb.go : %.proto
	@echo '    PROTOC $@'
	cd $(@D) && protoc --go_out=plugins=grpc:. $(<F)