Makefile

SHELL := /bin/bash

# ---

# Read default configuration
include config.default
export $(shell sed 's/=.*//' config.default)

# Image to build
BUILD_IMAGE ?= $(BUILD_NAMESPACE)/$(IMAGE_NAME)
export BUILD_IMAGE

# ---

SED_MATCH ?= [^a-zA-Z0-9._-]

ifeq ($(CIRCLECI),true)
# Configure build variables based on CircleCI environment vars
BUILD_NUM = $(CIRCLE_BUILD_NUM)
BRANCH_NAME ?= $(shell sed 's/$(SED_MATCH)/-/g' <<< "$(CIRCLE_BRANCH)")
BUILD_TAG ?= $(shell sed 's/$(SED_MATCH)/-/g' <<< "$(CIRCLE_TAG)")
else
# Not in CircleCI environment, try to set sane defaults
BUILD_NUM = local
BRANCH_NAME ?= $(shell git rev-parse --abbrev-ref HEAD | sed 's/$(SED_MATCH)/-/g')
BUILD_TAG ?= $(shell git tag -l --points-at HEAD | tail -n1 | sed 's/$(SED_MATCH)/-/g')
endif

# If BUILD_TAG is blank there's no tag on this commit
ifeq ($(strip $(BUILD_TAG)),)
# Default to branch name
BUILD_TAG := $(BRANCH_NAME)
else
# Consider this the new :latest image
# FIXME: implement build tests before tagging with :latest
PUSH_LATEST := true
endif

REVISION_TAG = $(shell git rev-parse --short HEAD)

export BUILD_NUM
export BUILD_TAG
export BRANCH_NAME

# ---

# Check necessary commands exist
DOCKER := $(shell command -v docker 2> /dev/null)
COMPOSER := $(shell command -v composer 2> /dev/null)
JQ := $(shell command -v jq 2> /dev/null)
SHELLCHECK := $(shell command -v shellcheck 2> /dev/null)
SHFMT := $(shell command -v shfmt 2> /dev/null)
YAMLLINT := $(shell command -v yamllint 2> /dev/null)
FLAKE8 := $(shell command -v flake8 2> /dev/null)

# ============================================================================

ALL: init prepare lint build push

init:
	@chmod 755 .githooks/*
	@find .git/hooks -type l -exec rm {} \;
	@find .githooks -type f -exec ln -sf ../../{} .git/hooks/ \;

format: format-sh

format-sh:
ifndef SHFMT
	$(error "shfmt is not installed: https://github.com/mvdan/sh")
endif
	@shfmt -i 2 -ci -w .

lint: init lint-sh lint-py lint-yaml lint-json lint-composer lint-docker

lint-sh:
ifndef SHELLCHECK
	$(error "shellcheck is not installed: https://github.com/koalaman/shellcheck")
endif
ifndef SHFMT
	$(error "shfmt is not installed: https://github.com/mvdan/sh")
endif
	@shfmt -f . | xargs shellcheck
	@shfmt -i 2 -ci -d .

lint-py:
ifndef FLAKE8
	$(error "flake8 is not installed: https://pypi.org/project/flake8/")
endif
	@flake8

lint-yaml:
ifndef YAMLLINT
	$(error "yamllint is not installed: https://github.com/adrienverge/yamllint")
endif
	@find . -type f -name '*.yml' | xargs yamllint

lint-json:
ifndef JQ
	$(error "jq is not installed: https://stedolan.github.io/jq/download/")
endif
	@find . -type f -name '*.json' | xargs jq type | grep -q '"object"'

lint-composer:
ifndef COMPOSER
	$(warning "composer is not installed: https://getcomposer.org/doc/00-intro.md#installation-linux-unix-macos")
else
	@find . -type f -name 'composer*.json' | xargs composer validate >/dev/null
endif

lint-docker:
ifndef DOCKER
	$(error "docker is not installed: https://docs.docker.com/install/")
endif
	@docker run --rm -i hadolint/hadolint < src/Dockerfile >/dev/null

prepare: Dockerfile

Dockerfile:
	envsubst '$${BASE_NAMESPACE},$${BASE_IMAGE},$${BASE_TAG},$${CIRCLECI_USER}' \
		< Dockerfile.in > src/Dockerfile

build:
	docker build \
		--tag=$(BUILD_NAMESPACE)/${IMAGE_NAME}:$(BUILD_TAG) \
		--tag=$(BUILD_NAMESPACE)/${IMAGE_NAME}:build-$(BUILD_NUM) \
		--tag=$(BUILD_NAMESPACE)/${IMAGE_NAME}:$(REVISION_TAG) \
		src

push: push-tag push-latest

push-tag:
	docker push $(BUILD_NAMESPACE)/${IMAGE_NAME}:$(BUILD_TAG)
	docker push $(BUILD_NAMESPACE)/${IMAGE_NAME}:build-$(BUILD_NUM)

push-latest:
	if [[ "$(PUSH_LATEST)" = "true" ]]; then { \
		docker tag $(BUILD_NAMESPACE)/${IMAGE_NAME}:$(REVISION_TAG) $(BUILD_NAMESPACE)/${IMAGE_NAME}:latest; \
		docker push $(BUILD_NAMESPACE)/${IMAGE_NAME}:latest; \
	}	else { \
		echo "Not tagged.. skipping latest"; \
	} fi