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thockinthockin
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Use the go-build-template
Faster builds and versions from tags. Also use alpine as a base image. We need alpine for other architectures...
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‎.gitignore

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/bin
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/.go
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/.push-*
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/.container-*
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/.dockerfile-*

‎Dockerfile

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‎Dockerfile.in

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# Copyright 2016 The Kubernetes Authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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FROM ARG_FROM
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MAINTAINER Tim Hockin <thockin@google.com>
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ADD bin/ARG_ARCH/ARG_BIN /ARG_BIN
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ENV GIT_SYNC_DEST /git
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# Move the existing SSH binary, then replace it with the wrapper script
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RUN apk update --no-cache && apk add \
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ca-certificates \
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coreutils \
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git \
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openssh-client
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RUN mv /usr/bin/ssh /usr/bin/ssh-binary
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ADD ssh-wrapper.sh /usr/bin/ssh
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RUN chmod 755 /usr/bin/ssh
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USER nobody:nobody
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ENTRYPOINT ["/ARG_BIN"]

‎Makefile

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# See the License for the specific language governing permissions and
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# limitations under the License.
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.PHONY: all push push-legacy container clean
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# The binary to build (just the basename).
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BIN := git-sync
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REGISTRY ?= gcr.io/google_containers
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IMAGE = $(REGISTRY)/git-sync-$(ARCH)
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LEGACY_AMD64_IMAGE = $(REGISTRY)/git-sync
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# This repo's root import path (under GOPATH).
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PKG := k8s.io/git-sync
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TAG = v2.0.2
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# Where to push the docker image.
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REGISTRY ?= gcr.io/google-containers
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# Architectures supported: amd64, arm, arm64 and ppc64le
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# Which architecture to build - see $(ALL_ARCH) for options.
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ARCH ?= amd64
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# TODO: get a base image for non-x86 archs
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# arm arm64 ppc64le
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ALL_ARCH = amd64
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KUBE_CROSS_IMAGE ?= gcr.io/google_containers/kube-cross
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KUBE_CROSS_VERSION ?= v1.6.3-2
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GO_PKG = k8s.io/git-sync
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BIN = git-sync
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# If you want to build all containers, see the 'all-container' rule.
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# If you want to build AND push all containers, see the 'all-push' rule.
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all: all-build
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sub-container-%:
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$(MAKE) ARCH=$* container
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sub-push-%:
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$(MAKE) ARCH=$* push
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all-build: $(addprefix bin/$(BIN)-,$(ALL_ARCH))
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# This version-strategy uses git tags to set the version string
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VERSION := $(shell git describe --tags --always --dirty)
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#
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# This version-strategy uses a manual value to set the version string
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#VERSION := 1.2.3
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all-container: $(addprefix sub-container-,$(ALL_ARCH))
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###
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### These variables should not need tweaking.
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###
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all-push: $(addprefix sub-push-,$(ALL_ARCH))
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SRC_DIRS := cmd pkg # directories which hold app source (not vendored)
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build: bin/$(BIN)-$(ARCH)
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ALL_ARCH := amd64
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bin/$(BIN)-$(ARCH): FORCE
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mkdir -p bin
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docker run \
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-u $$(id -u):$$(id -g) \
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-v $$(pwd):/go/src/$(GO_PKG) \
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$(KUBE_CROSS_IMAGE):$(KUBE_CROSS_VERSION) \
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/bin/bash -c " \
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cd /go/src/$(GO_PKG) && \
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CGO_ENABLED=0 go build \
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-installsuffix cgo \
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-ldflags '-w' \
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-o $@"
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# TODO: get a baseimage that works for other architectures
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# arm arm64 ppc64le
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container: .container-$(ARCH)
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.container-$(ARCH): bin/$(BIN)-$(ARCH)
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docker build -t $(IMAGE):$(TAG) --build-arg ARCH=$(ARCH) .
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# Set default base image dynamically for each arch
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ifeq ($(ARCH),amd64)
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docker tag $(IMAGE):$(TAG) $(LEGACY_AMD64_IMAGE):$(TAG)
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BASEIMAGE?=alpine
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endif
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touch $@
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push: .push-$(ARCH)
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.push-$(ARCH): .container-$(ARCH)
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gcloud docker push $(IMAGE):$(TAG)
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touch $@
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push-legacy: .push-legacy-$(ARCH)
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.push-legacy-$(ARCH): .container-$(ARCH)
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ifeq ($(ARCH),amd64)
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gcloud docker push $(LEGACY_AMD64_IMAGE):$(TAG)
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ifeq ($(ARCH),arm)
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BASEIMAGE?=armel/busybox
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endif
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ifeq ($(ARCH),arm64)
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BASEIMAGE?=aarch64/busybox
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endif
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ifeq ($(ARCH),ppc64le)
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BASEIMAGE?=ppc64le/busybox
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endif
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touch $@
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test:
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@./test.sh
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IMAGE := $(REGISTRY)/$(BIN)-$(ARCH)
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LEGACY_IMAGE := $(REGISTRY)/$(BIN)
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clean:
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rm -rf .container-* .push-* bin/
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BUILD_IMAGE ?= golang:1.7-alpine
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FORCE:
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# If you want to build all binaries, see the 'all-build' rule.
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# If you want to build all containers, see the 'all-container' rule.
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# If you want to build AND push all containers, see the 'all-push' rule.
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all: build
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build-%:
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@$(MAKE) --no-print-directory ARCH=$* build
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container-%:
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@$(MAKE) --no-print-directory ARCH=$* container
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push-%:
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@$(MAKE) --no-print-directory ARCH=$* push
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all-build: $(addprefix build-, $(ALL_ARCH))
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all-container: $(addprefix container-, $(ALL_ARCH))
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all-push: $(addprefix push-, $(ALL_ARCH))
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build: bin/$(ARCH)/$(BIN)
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bin/$(ARCH)/$(BIN): build-dirs
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@echo "building: $@"
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@docker run \
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-ti \
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-u $$(id -u):$$(id -g) \
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-v $$(pwd)/.go:/go \
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-v $$(pwd):/go/src/$(PKG) \
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-v $$(pwd)/bin/$(ARCH):/go/bin \
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-v $$(pwd)/bin/$(ARCH):/go/bin/linux_$(ARCH) \
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-v $$(pwd)/.go/std/$(ARCH):/usr/local/go/pkg/linux_$(ARCH)_static \
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-w /go/src/$(PKG) \
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$(BUILD_IMAGE) \
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/bin/sh -c " \
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ARCH=$(ARCH) \
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VERSION=$(VERSION) \
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PKG=$(PKG) \
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./build/build.sh \
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"
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DOTFILE_IMAGE = $(subst /,_,$(IMAGE))-$(VERSION)
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container: .container-$(DOTFILE_IMAGE) container-name
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.container-$(DOTFILE_IMAGE): bin/$(ARCH)/$(BIN) Dockerfile.in
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@sed \
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-e 's|ARG_BIN|$(BIN)|g' \
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-e 's|ARG_ARCH|$(ARCH)|g' \
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-e 's|ARG_FROM|$(BASEIMAGE)|g' \
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Dockerfile.in > .dockerfile-$(ARCH)
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@docker build -t $(IMAGE):$(VERSION) -f .dockerfile-$(ARCH) .
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@docker images -q $(IMAGE):$(VERSION) > $@
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@if [ "$(ARCH)" == "amd64" ]; then \
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docker tag -f $(IMAGE):$(VERSION) $(LEGACY_IMAGE):$(VERSION); \
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fi
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container-name:
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@echo "container: $(IMAGE):$(VERSION)"
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push: .push-$(DOTFILE_IMAGE) push-name
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.push-$(DOTFILE_IMAGE): .container-$(DOTFILE_IMAGE)
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@gcloud docker push $(IMAGE):$(VERSION)
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@docker images -q $(IMAGE):$(VERSION) > $@
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@if [ "$(ARCH)" == "amd64" ]; then \
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gcloud docker push $(LEGACY_IMAGE):$(TAG); \
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fi
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push-name:
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@echo "pushed: $(IMAGE):$(VERSION)"
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version:
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@echo $(VERSION)
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test: build-dirs
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@docker run \
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-ti \
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-u $$(id -u):$$(id -g) \
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-v $$(pwd)/.go:/go \
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-v $$(pwd):/go/src/$(PKG) \
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-v $$(pwd)/bin/$(ARCH):/go/bin \
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-v $$(pwd)/.go/std/$(ARCH):/usr/local/go/pkg/linux_$(ARCH)_static \
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-w /go/src/$(PKG) \
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$(BUILD_IMAGE) \
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/bin/sh -c " \
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./build/test.sh $(SRC_DIRS) \
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"
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@./test_e2e.sh
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build-dirs:
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@mkdir -p bin/$(ARCH)
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@mkdir -p .go/src/$(PKG) .go/pkg .go/bin .go/std/$(ARCH)
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clean: container-clean bin-clean
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container-clean:
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rm -rf .container-* .dockerfile-* .push-*
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bin-clean:
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rm -rf .go bin

‎build/build.sh

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#!/bin/sh
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#
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# Copyright 2016 The Kubernetes Authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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set -o errexit
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set -o nounset
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set -o pipefail
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if [ -z "${PKG}" ]; then
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echo "PKG must be set"
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exit 1
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fi
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if [ -z "${ARCH}" ]; then
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echo "ARCH must be set"
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exit 1
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fi
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if [ -z "${VERSION}" ]; then
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echo "VERSION must be set"
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exit 1
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fi
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export CGO_ENABLED=0
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export GOARCH="${ARCH}"
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go install \
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-installsuffix "static" \
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-ldflags "-X ${PKG}/pkg/version.VERSION=${VERSION}" \
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./...

‎build/test.sh

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#!/bin/sh
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#
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# Copyright 2016 The Kubernetes Authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14+
# See the License for the specific language governing permissions and
15+
# limitations under the License.
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set -o errexit
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set -o nounset
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set -o pipefail
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export CGO_ENABLED=0
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TARGETS=$(for d in "$@"; do echo ./$d/...; done)
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echo "Running tests:"
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go test -i -installsuffix "static" ${TARGETS}
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go test -installsuffix "static" ${TARGETS}
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echo
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echo -n "Checking gofmt: "
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ERRS=$(find "$@" -type f -name \*.go | xargs gofmt -l 2>&1 || true)
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if [ -n "${ERRS}" ]; then
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echo "FAIL - the following files need to be gofmt'ed:"
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for e in ${ERRS}; do
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echo " $e"
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done
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echo
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exit 1
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fi
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echo "PASS"
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echo
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echo -n "Checking go vet: "
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ERRS=$(go vet ${TARGETS} 2>&1 || true)
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if [ -n "${ERRS}" ]; then
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echo "FAIL"
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echo "${ERRS}"
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echo
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exit 1
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fi
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echo "PASS"
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echo

‎main.go renamed to ‎cmd/git-sync/main.go

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// git-sync is a command that pull a git repository to a local directory.
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19-
package main // import "k8s.io/git-sync"
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package main // import "k8s.io/git-sync/cmd/git-sync"
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2121
import (
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"bytes"

‎main_test.go renamed to ‎cmd/git-sync/main_test.go

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‎pkg/version/version.go

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/*
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Copyright 2016 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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8+
http://www.apache.org/licenses/LICENSE-2.0
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10+
Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13+
See the License for the specific language governing permissions and
14+
limitations under the License.
15+
*/
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package version
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var VERSION = "UNKNOWN"

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