Makefile.release

# Makefile for releasing CoreDNS
#
# The release is controlled from coremain/version.go. The version found there is
# used to tag the git repo and to build the assets that are uploaded to github
# (after some sanity checks).
#
# The release should be accompanied by release notes published on coredns.io.
# For example: https://coredns.io/2016/09/18/coredns-001-release/ Also send an
# email to coredns-discuss@ to announce the new version.
#
# We use https://github.com/progrium/gh-release to automate github stuff be sure
# to have that binary in your path.
#
# Get a list of authors for this release with:
#
# git log --pretty=format:'%an' v001..master | sort -u (where v001 is the
# previous release, obviously you'll need to adjust this)
#
# Steps:
#
# * Get an access token: https://help.github.com/articles/creating-an-access-token-for-command-line-use/
# * export GITHUB_ACCESS_TOKEN=<token>
# * Up the version in coremain/version.go
# * Run: make DOCKER=coredns -f Makefile.release release
#   * runs make -f Makefile.doc
#   	* this is a noop if ronn can't be found
#   * perform a go generate
#   * will *commit* your change(s) with 'Release $VERSION'
#   * push to github
#   * build the release and do all that fluff.
#
# Steps for docker:
#
# * Login into docker: docker login (should have push creds for coredns registry)
# * We use the manifest-tool from https://github.com/estesp/manifest-tool to build the manifest list
# * Make sure you have the binary in your path.
#
# * Run: make DOCKER=coredns -f Makefile.release docker
#
# Docker push should happen after you make the new release and uploaded it to Github.
#
# If you want to push to a personal registry, point DOCKER to something else, i.e.
#
# * make DOCKER=miek -f Makefile.release docker
EMPTY:=
SPACE:=$(EMPTY) $(EMPTY)
COMMA:=$(EMPTY),$(EMPTY)

ifeq (, $(shell which gh-release))
    $(error "No gh-release in $$PATH, install with: go get github.com/progrium/gh-release")
endif

ifeq (, $(shell which manifest-tool))
    $(error "No manifest-tool in $$PATH, install with: go get github.com/estesp/manifest-tool")
endif

DOCKER:=
NAME:=coredns
VERSION:=$(shell grep 'CoreVersion' coremain/version.go | awk '{ print $$3 }' | tr -d '"')
GITHUB:=coredns
DOCKER_IMAGE_NAME:=$(DOCKER)/$(NAME)
GITCOMMIT:=$(shell git describe --dirty --always)
LINUX_ARCH:=amd64 arm arm64 ppc64le s390x
PLATFORMS:=$(subst $(SPACE),$(COMMA),$(foreach arch,$(LINUX_ARCH),linux/$(arch)))

ifeq ($(DOCKER),)
    $(error "Please specify Docker registry to use. Use DOCKER=coredns for releases")
endif

all:
	@echo Use the 'release' target to start a release

release: pre commit push build tar upload

docker: docker-build docker-push

.PHONY: pre
pre:
	go generate
	$(MAKE) -f Makefile.doc

.PHONY: push
push:
	@echo Pushing release to master
	git push

.PHONY: commit
commit:
	@echo Committing
	git commit -am"Release $(VERSION)"

.PHONY: build
build:
	@echo Cleaning old builds
	@rm -rf build && mkdir build
	@echo Building: darwin $(VERSION)
	mkdir -p build/darwin/amd64 && $(MAKE) coredns BINARY=build/darwin/amd64/$(NAME) SYSTEM="GOOS=darwin GOARCH=amd64" CHECKS="" VERBOSE=""
	@echo Building: windows $(VERSION)
	mkdir -p build/windows/amd64 && $(MAKE) coredns BINARY=build/windows/amd64/$(NAME) SYSTEM="GOOS=windows GOARCH=amd64" CHECKS="" VERBOSE=""
	@echo Building: linux/$(LINUX_ARCH)  $(VERSION) ;\
	for arch in $(LINUX_ARCH); do \
	    mkdir -p build/linux/$$arch  && $(MAKE) coredns BINARY=build/linux/$$arch/$(NAME) SYSTEM="GOOS=linux GOARCH=$$arch" CHECKS="" VERBOSE="" ;\
	done

.PHONY: tar
tar:
	@echo Cleaning old releases
	@rm -rf release && mkdir release
	tar -zcf release/$(NAME)_$(VERSION)_darwin_amd64.tgz -C build/darwin/amd64 $(NAME)
	tar -zcf release/$(NAME)_$(VERSION)_windows_amd64.tgz -C build/windows/amd64 $(NAME)
	for arch in $(LINUX_ARCH); do \
	    tar -zcf release/$(NAME)_$(VERSION)_linux_$$arch.tgz -C build/linux/$$arch $(NAME) ;\
	done

.PHONY: upload
upload:
	@echo Releasing: $(VERSION)
	gh-release create $(GITHUB)/$(NAME) $(VERSION)

.PHONY: docker-build
docker-build: tar
	# Steps:
	# 1. Copy appropriate coredns binary to build/docker/linux/<arch>
	# 2. Copy Dockerfile to build/docker/linux/<arch>
	# 3. Replace base image from alpine:latest to <arch>/alpine:latest
	# 4. Comment RUN in Dockerfile
	# <arch>:
	# arm: arm32v6
	# arm64: arm64v8
	rm -rf build/docker
	for arch in $(LINUX_ARCH); do \
	    mkdir -p build/docker/linux/$$arch ;\
	    tar -xzf release/$(NAME)_$(VERSION)_linux_$$arch.tgz -C build/docker/linux/$$arch ;\
	    cp Dockerfile build/docker/linux/$$arch ;\
	    if [ $$arch != amd64 ]; then \
		case $$arch in \
	        arm) \
	            BASEIMAGE=arm32v6 ;\
	            ;; \
	        arm64) \
	            BASEIMAGE=arm64v8 ;\
	            ;; \
	        *) \
	            BASEIMAGE=$$arch ;\
	            ;; \
	        esac ;\
	        sed -e "s/alpine:latest/$$BASEIMAGE\\/alpine:latest/" -i build/docker/linux/$$arch/Dockerfile ;\
	        sed -e "s/^\\s*RUN/#RUN/" -i build/docker/linux/$$arch/Dockerfile ;\
	    fi ;\
	    docker build -t coredns build/docker/linux/$$arch ;\
	    docker tag coredns $(DOCKER_IMAGE_NAME):coredns-$$arch ;\
	done

.PHONY: docker-push
docker-push:
	@echo Pushing: $(VERSION) to $(DOCKER_IMAGE_NAME)
	for arch in $(LINUX_ARCH); do \
	    docker push $(DOCKER_IMAGE_NAME):coredns-$$arch ;\
	done
	manifest-tool push from-args --platforms $(PLATFORMS) --template $(DOCKER_IMAGE_NAME):coredns-ARCH --target $(DOCKER_IMAGE_NAME):$(VERSION)
	manifest-tool push from-args --platforms $(PLATFORMS) --template $(DOCKER_IMAGE_NAME):coredns-ARCH --target $(DOCKER_IMAGE_NAME):latest

.PHONY: clean
clean:
	rm -rf release
	rm -rf build