# Makefile for Gitaly

# You can override options by creating a "config.mak" file in Gitaly's root
# directory.
-include config.mak

# Unexport environment variables which have an effect on Git itself.
# We need to keep GIT_PREFIX because it's used to determine where our
# self-built Git should be installed into. It's probably not going to
# matter much though.
unexport $(filter-out GIT_PREFIX,$(shell git rev-parse --local-env-vars))

# Call `make V=1` in order to print commands verbosely.
ifeq ($(V),1)
    Q =
else
    Q = @
endif

SHELL = /usr/bin/env bash -eo pipefail

# Host information
OS   := $(shell uname)
ARCH := $(shell uname -m)

# Directories
SOURCE_DIR       := $(abspath $(dir $(lastword ${MAKEFILE_LIST})))
BUILD_DIR        := ${SOURCE_DIR}/_build
COVERAGE_DIR     := ${BUILD_DIR}/cover
DEPENDENCY_DIR   := ${BUILD_DIR}/deps
TOOLS_DIR        := ${BUILD_DIR}/tools
GITALY_RUBY_DIR  := ${SOURCE_DIR}/ruby
MODULE_VERSION   := $(notdir $(shell go list -m))

# These variables may be overridden at runtime by top-level make
## The prefix where Gitaly binaries will be installed to. Binaries will end up
## in ${PREFIX}/bin by default.
PREFIX           ?= /usr/local
prefix           ?= ${PREFIX}
exec_prefix      ?= ${prefix}
bindir           ?= ${exec_prefix}/bin
INSTALL_DEST_DIR := ${DESTDIR}${bindir}
## The prefix where Git will be installed to.
GIT_PREFIX       ?= ${GIT_DEFAULT_PREFIX}

# Tools
GIT               := $(shell command -v git)
GOIMPORTS         := ${TOOLS_DIR}/goimports
GOFUMPT           := ${TOOLS_DIR}/gofumpt
GOLANGCI_LINT     := ${TOOLS_DIR}/golangci-lint
GO_LICENSES       := ${TOOLS_DIR}/go-licenses
PROTOC            := ${TOOLS_DIR}/protoc
PROTOC_GEN_GO     := ${TOOLS_DIR}/protoc-gen-go
PROTOC_GEN_GO_GRPC:= ${TOOLS_DIR}/protoc-gen-go-grpc
PROTOC_GEN_GITALY := ${TOOLS_DIR}/protoc-gen-gitaly
GOTESTSUM         := ${TOOLS_DIR}/gotestsum
GOCOVER_COBERTURA := ${TOOLS_DIR}/gocover-cobertura

# Tool options
GOLANGCI_LINT_OPTIONS ?=
GOLANGCI_LINT_CONFIG  ?= ${SOURCE_DIR}/.golangci.yml

# Build information
GITALY_PACKAGE    := gitlab.com/gitlab-org/gitaly/v14
BUILD_TIME        := $(shell date +"%Y%m%d.%H%M%S")
GITALY_VERSION    := $(shell ${GIT} describe --match v* 2>/dev/null | sed 's/^v//' || cat ${SOURCE_DIR}/VERSION 2>/dev/null || echo unknown)
GO_LDFLAGS        := -ldflags '-X ${GITALY_PACKAGE}/internal/version.version=${GITALY_VERSION} -X ${GITALY_PACKAGE}/internal/version.buildtime=${BUILD_TIME} -X ${GITALY_PACKAGE}/internal/version.moduleVersion=${MODULE_VERSION}'
GO_BUILD_TAGS     := tracer_static,tracer_static_jaeger,tracer_static_stackdriver,continuous_profiler_stackdriver,static,system_libgit2

# Dependency versions
GOLANGCI_LINT_VERSION     ?= 1.43.0
GOCOVER_COBERTURA_VERSION ?= aaee18c8195c3f2d90e5ef80ca918d265463842a
GOFUMPT_VERSION           ?= 0.2.0
GOIMPORTS_VERSION         ?= 2538eef75904eff384a2551359968e40c207d9d2
GOSUMTEST_VERSION         ?= v1.7.0
GO_LICENSES_VERSION       ?= 73411c8fa237ccc6a75af79d0a5bc021c9487aad
# https://pkg.go.dev/github.com/protocolbuffers/protobuf
PROTOC_VERSION            ?= v3.17.3
# https://pkg.go.dev/google.golang.org/protobuf
PROTOC_GEN_GO_VERSION     ?= 1.26.0
# https://pkg.go.dev/google.golang.org/grpc/cmd/protoc-gen-go-grpc
PROTOC_GEN_GO_GRPC_VERSION?= 1.1.0
GIT2GO_VERSION            ?= v32
LIBGIT2_VERSION           ?= v1.2.0

# The default version is used in case the caller does not set the variable or
# if it is either set to the empty string or "default".
ifeq (${GIT_VERSION:default=},)
    override GIT_VERSION := v2.33.1
    GIT_APPLY_DEFAULT_PATCHES := YesPlease
else
    # Support both vX.Y.Z and X.Y.Z version patterns, since callers across GitLab
    # use both.
    override GIT_VERSION := $(shell echo ${GIT_VERSION} | awk '/^[0-9]\.[0-9]+\.[0-9]+$$/ { printf "v" } { print $$1 }')
endif

# protoc target
PROTOC_REPO_URL ?= https://github.com/protocolbuffers/protobuf
PROTOC_SOURCE_DIR   ?= ${DEPENDENCY_DIR}/protobuf/source
PROTOC_BUILD_DIR    ?= ${DEPENDENCY_DIR}/protobuf/build
PROTOC_INSTALL_DIR  ?= ${DEPENDENCY_DIR}/protobuf/install

ifeq ($(origin PROTOC_BUILD_OPTIONS),undefined)
    ## Build options for protoc.
    PROTOC_BUILD_OPTIONS ?=
    PROTOC_BUILD_OPTIONS += -DBUILD_SHARED_LIBS=NO
    PROTOC_BUILD_OPTIONS += -DBUILD_TESTS=OFF
    PROTOC_BUILD_OPTIONS += -DCMAKE_INSTALL_PREFIX=${PROTOC_INSTALL_DIR}
endif

# Git target
GIT_REPO_URL       ?= https://gitlab.com/gitlab-org/gitlab-git.git
# The default prefix specifies where Git will be installed to if no GIT_PREFIX
# was given. This directory will be cleaned up before we install into it.
GIT_DEFAULT_PREFIX := ${DEPENDENCY_DIR}/git/install
GIT_SOURCE_DIR     := ${DEPENDENCY_DIR}/git/source
GIT_QUIET          :=
ifeq (${Q},@)
    GIT_QUIET = --quiet
endif

ifdef GIT_APPLY_DEFAULT_PATCHES
    # Before adding custom patches, please read doc/PROCESS.md#Patching-git
    # first to make sure your patches meet our acceptance criteria. Patches
    # must be put into `_support/git-patches`.

    # The following set of patches speeds up connectivity checks and thus
    # pushes into Gitaly. They have been merged into next via a5619d4f8d (Merge
    # branch 'ps/connectivity-optim', 2021-09-03)
    GIT_PATCHES += 0001-fetch-pack-speed-up-loading-of-refs-via-commit-graph.patch
    GIT_PATCHES += 0002-revision-separate-walk-and-unsorted-flags.patch
    GIT_PATCHES += 0003-connected-do-not-sort-input-revisions.patch
    GIT_PATCHES += 0004-revision-stop-retrieving-reference-twice.patch
    GIT_PATCHES += 0005-commit-graph-split-out-function-to-search-commit-pos.patch
    GIT_PATCHES += 0006-revision-avoid-hitting-packfiles-when-commits-are-in.patch

    # Due to a bug, fetches with `--quiet` were slower than those without
    # because Git formatted each reference into the output buffer even though
    # it wasn't used. This has been merged into next via 2440a8a2aa (Merge
    # branch 'ps/fetch-omit-formatting-under-quiet' into next, 2021-09-01)
    GIT_PATCHES += 0007-fetch-skip-formatting-updated-refs-with-quiet.patch

    # This patch set speeds up fetches, most importantly by making better use
    # of the commit graph. They have been merged into next via 99f865125d
    # (Merge branch 'ps/fetch-optim' into next, 2021-09-08).
    GIT_PATCHES += 0008-fetch-speed-up-lookup-of-want-refs-via-commit-graph.patch
    GIT_PATCHES += 0009-fetch-avoid-unpacking-headers-in-object-existence-ch.patch
    GIT_PATCHES += 0010-connected-refactor-iterator-to-return-next-object-ID.patch
    GIT_PATCHES += 0011-fetch-pack-optimize-loading-of-refs-via-commit-graph.patch
    GIT_PATCHES += 0012-fetch-refactor-fetch-refs-to-be-more-extendable.patch
    GIT_PATCHES += 0013-fetch-merge-fetching-and-consuming-refs.patch
    GIT_PATCHES += 0014-fetch-avoid-second-connectivity-check-if-we-already-.patch

    # Buffer ref advertisement writes in upload-pack. Merged into next via
    # c31d871c (Merge branch 'jv/pkt-line-batch' into next, 2021-09-10).
    GIT_PATCHES += 0016-pkt-line-add-stdio-packet-write-functions.patch
    GIT_PATCHES += 0017-upload-pack-use-stdio-in-send_ref-callbacks.patch

    # Increase upload-pack copy buffer size. Merged into next via 3a1afc1ef8
    # (Merge branch 'jv/use-larger-buffer-in-upload-pack' into next,
    # 2021-12-27).
    GIT_PATCHES += 0018-upload-pack.c-increase-output-buffer-size.patch

    # This extra version has two intentions: first, it allows us to detect
    # capabilities of the command at runtime. Second, it helps admins to
    # discover which version is currently in use. As such, this version must be
    # incremented whenever a new patch is added above. When no patches exist,
    # then this should be undefined. Otherwise, it must be set to at least
    # `gl1` given that `0` is the "default" GitLab patch level.
    GIT_EXTRA_VERSION := gl2
endif

ifeq ($(origin GIT_BUILD_OPTIONS),undefined)
    ## Build options for Git.
    GIT_BUILD_OPTIONS ?=
    # activate developer checks
    GIT_BUILD_OPTIONS += DEVELOPER=1
    # but don't cause warnings to fail the build
    GIT_BUILD_OPTIONS += DEVOPTS=no-error
    GIT_BUILD_OPTIONS += USE_LIBPCRE=YesPlease
    GIT_BUILD_OPTIONS += NO_PERL=YesPlease
    GIT_BUILD_OPTIONS += NO_EXPAT=YesPlease
    GIT_BUILD_OPTIONS += NO_TCLTK=YesPlease
    GIT_BUILD_OPTIONS += NO_GETTEXT=YesPlease
    GIT_BUILD_OPTIONS += NO_PYTHON=YesPlease
    GIT_BUILD_OPTIONS += NO_INSTALL_HARDLINKS=YesPlease
endif

ifdef GIT_APPEND_BUILD_OPTIONS
	GIT_BUILD_OPTIONS += ${GIT_APPEND_BUILD_OPTIONS}
endif

# libgit2 target
LIBGIT2_REPO_URL    ?= https://gitlab.com/libgit2/libgit2
LIBGIT2_SOURCE_DIR  ?= ${DEPENDENCY_DIR}/libgit2/source
LIBGIT2_BUILD_DIR   ?= ${DEPENDENCY_DIR}/libgit2/build
LIBGIT2_INSTALL_DIR ?= ${DEPENDENCY_DIR}/libgit2/install

ifeq ($(origin LIBGIT2_BUILD_OPTIONS),undefined)
    ## Build options for libgit2.
    LIBGIT2_BUILD_OPTIONS ?=
    LIBGIT2_BUILD_OPTIONS += -DTHREADSAFE=ON
    LIBGIT2_BUILD_OPTIONS += -DBUILD_CLAR=OFF
    LIBGIT2_BUILD_OPTIONS += -DBUILD_SHARED_LIBS=OFF
    LIBGIT2_BUILD_OPTIONS += -DCMAKE_C_FLAGS=-fPIC
    LIBGIT2_BUILD_OPTIONS += -DCMAKE_BUILD_TYPE=Release
    LIBGIT2_BUILD_OPTIONS += -DCMAKE_INSTALL_PREFIX=${LIBGIT2_INSTALL_DIR}
    LIBGIT2_BUILD_OPTIONS += -DCMAKE_INSTALL_LIBDIR=lib
    LIBGIT2_BUILD_OPTIONS += -DENABLE_TRACE=OFF
    LIBGIT2_BUILD_OPTIONS += -DUSE_SSH=OFF
    LIBGIT2_BUILD_OPTIONS += -DUSE_HTTPS=OFF
    LIBGIT2_BUILD_OPTIONS += -DUSE_ICONV=OFF
    LIBGIT2_BUILD_OPTIONS += -DUSE_NTLMCLIENT=OFF
    LIBGIT2_BUILD_OPTIONS += -DUSE_BUNDLED_ZLIB=ON
    LIBGIT2_BUILD_OPTIONS += -DUSE_HTTP_PARSER=builtin
    LIBGIT2_BUILD_OPTIONS += -DREGEX_BACKEND=builtin
endif

ifdef LIBGIT2_APPEND_BUILD_OPTIONS
	LIBGIT2_BUILD_OPTIONS += ${LIBGIT2_APPEND_BUILD_OPTIONS}
endif

# These variables control test options and artifacts
## List of Go packages which shall be tested.
## Go packages to test when using the test-go target.
TEST_PACKAGES    ?= ${SOURCE_DIR}/...
## Test options passed to `go test`.
TEST_OPTIONS     ?= -count=1
## Specify the output format used to print tests ["standard-verbose", "standard-quiet", "short"]
TEST_FORMAT      ?= short
TEST_REPORT      ?= ${BUILD_DIR}/reports/go-tests-report.xml
## Directory where all runtime test data is being created.
TEST_TMP_DIR     ?=
TEST_REPO_DIR    := ${BUILD_DIR}/testrepos
TEST_REPO        := ${TEST_REPO_DIR}/gitlab-test.git
TEST_REPO_GIT    := ${TEST_REPO_DIR}/gitlab-git-test.git
BENCHMARK_REPO   := ${TEST_REPO_DIR}/benchmark.git

# Find all commands.
find_commands         = $(notdir $(shell find ${SOURCE_DIR}/cmd -mindepth 1 -maxdepth 1 -type d -print))
# Find all command binaries.
find_command_binaries = $(addprefix ${BUILD_DIR}/bin/, $(shell ls ${BUILD_DIR}/bin))
# Find all Go source files.
find_go_sources       = $(shell find ${SOURCE_DIR} -type d \( -name ruby -o -name vendor -o -name testdata -o -name '_*' -o -path '*/proto/go/gitalypb' \) -prune -o -type f -name '*.go' -not -name '*.pb.go' -print | sort -u)

# run_go_tests will execute Go tests with all required parameters. Its
# behaviour can be modified via the following variables:
#
# GO_BUILD_TAGS: tags used to build the executables
# TEST_OPTIONS: any additional options
# TEST_PACKAGES: packages which shall be tested
run_go_tests = PATH='${SOURCE_DIR}/internal/testhelper/testdata/home/bin:${PATH}' \
    TEST_TMP_DIR='${TEST_TMP_DIR}' \
    ${GOTESTSUM} --format ${TEST_FORMAT} --junitfile ${TEST_REPORT} -- ${GO_LDFLAGS} -tags '${GO_BUILD_TAGS}' ${TEST_OPTIONS} ${TEST_PACKAGES}

unexport GOROOT
export GOBIN                      = ${BUILD_DIR}/bin
export GOCACHE                   ?= ${BUILD_DIR}/cache
export GOPROXY                   ?= https://proxy.golang.org
export PATH                      := ${BUILD_DIR}/bin:${PATH}
export PKG_CONFIG_PATH           := ${LIBGIT2_INSTALL_DIR}/lib/pkgconfig
# Allow the linker flag -D_THREAD_SAFE as libgit2 is compiled with it on FreeBSD
export CGO_LDFLAGS_ALLOW          = -D_THREAD_SAFE

.NOTPARALLEL:

# By default, intermediate targets get deleted automatically after a successful
# build. We do not want that though: there's some precious intermediate targets
# like our `*.version` targets which are required in order to determine whether
# a dependency needs to be rebuilt. By specifying `.SECONDARY`, intermediate
# targets will never get deleted automatically.
.SECONDARY:

.PHONY: all
## Default target which builds Gitaly.
all: build

## Print help about available targets and variables.
help:
	@echo "usage: make [<target>...] [<variable>=<value>...]"
	@echo ""
	@echo "These are the available targets:"
	@echo ""

	@ # Match all targets which have preceding `## ` comments.
	${Q}awk '/^## / { sub(/^##/, "", $$0) ; desc = desc $$0 ; next } \
		 /^[[:alpha:]][[:alnum:]_-]+:/ && desc { print "  " $$1 desc } \
		 { desc = "" }' $(MAKEFILE_LIST) | sort | column -s: -t

	${Q}echo ""
	${Q}echo "These are common variables which can be overridden in config.mak:"
	${Q}echo ""

	@ # Match all variables which have preceding `## ` comments and which are assigned via `?=`.
	${Q}awk '/^[[:space:]]*## / { sub(/^[[:space:]]*##/,"",$$0) ; desc = desc $$0 ; next } \
		 /^[[:space:]]*[[:alpha:]][[:alnum:]_-]+[[:space:]]*\?=/ && desc { print "  "$$1 ":" desc } \
		 { desc = "" }' $(MAKEFILE_LIST) | sort | column -s: -t

.PHONY: build
## Build Go binaries and install required Ruby Gems.
build: ${SOURCE_DIR}/.ruby-bundle libgit2
	@ # We used to install Gitaly binaries into the source directory by default when executing
	@ # "make" or "make all", which has been changed in v14.5 to only build binaries into
	@ # `_build/bin`. In order to quickly fail in case any source install still refers to these
	@ # old binaries, we delete them from the source directory. Otherwise, it may happen that a
	@ # source install continues to use the old set of binaries that wasn't updated at all.
	@ # This safety guard can go away in v14.6.
	${Q}rm -f $(addprefix ${SOURCE_DIR}/,$(notdir $(call find_commands)) gitaly-git2go-v14)

	go install ${GO_LDFLAGS} -tags "${GO_BUILD_TAGS}" $(addprefix ${GITALY_PACKAGE}/cmd/, $(call find_commands))
	@ # We use version suffix for the gitaly-git2go binary to support compatibility contract between
	@ # gitaly and gitaly-git2go during upgrade deployment.
	@ # For more information refer to https://gitlab.com/gitlab-org/gitaly/-/issues/3647#note_599082033
	${Q}mv ${BUILD_DIR}/bin/gitaly-git2go "${BUILD_DIR}/bin/gitaly-git2go-${MODULE_VERSION}"

.PHONY: install
## Install Gitaly binaries. The target directory can be modified by setting PREFIX and DESTDIR.
install: build
	${Q}mkdir -p ${INSTALL_DEST_DIR}
	install $(call find_command_binaries) ${INSTALL_DEST_DIR}

ifdef WITH_BUNDLED_GIT
GIT_EXECUTABLES += git
GIT_EXECUTABLES += git-remote-http
GIT_EXECUTABLES += git-http-backend

build: $(patsubst %,${BUILD_DIR}/bin/gitaly-%,${GIT_EXECUTABLES})

install: $(patsubst %,${INSTALL_DEST_DIR}/gitaly-%,${GIT_EXECUTABLES})

prepare-tests: $(patsubst %,${BUILD_DIR}/bin/gitaly-%,${GIT_EXECUTABLES})

${BUILD_DIR}/bin/gitaly-%: ${GIT_SOURCE_DIR}/% | ${BUILD_DIR}/bin
	${Q}install $< $@

${INSTALL_DEST_DIR}/gitaly-%: ${BUILD_DIR}/bin/gitaly-%
	${Q}mkdir -p $(@D)
	${Q}install $< $@

export GITALY_TESTING_BUNDLED_GIT_PATH ?= ${BUILD_DIR}/bin
else
prepare-tests: git

export GITALY_TESTING_GIT_BINARY ?= ${GIT_PREFIX}/bin/git
endif

.PHONY: prepare-tests
prepare-tests: libgit2 prepare-test-repos ${SOURCE_DIR}/.ruby-bundle ${GOTESTSUM}
	${Q}mkdir -p "$(dir ${TEST_REPORT})"

.PHONY: prepare-test-repos
prepare-test-repos: ${TEST_REPO} ${TEST_REPO_GIT}

.PHONY: test
## Run Go and Ruby tests.
test: test-go test-ruby

.PHONY: test-ruby
test-ruby: prepare-tests rspec

.PHONY: test-go
## Run Go tests.
test-go: prepare-tests
	${Q}$(call run_go_tests)

.PHONY: test
## Run Go benchmarks.
bench: TEST_OPTIONS := ${TEST_OPTIONS} -bench=. -run=^$
bench: ${BENCHMARK_REPO} test-go

.PHONY: test-with-proxies
test-with-proxies: TEST_OPTIONS  := ${TEST_OPTIONS} -exec ${SOURCE_DIR}/_support/bad-proxies
test-with-proxies: TEST_PACKAGES := ${GITALY_PACKAGE}/internal/gitaly/rubyserver
test-with-proxies: prepare-tests
	${Q}$(call run_go_tests)

.PHONY: test-with-praefect
## Run Go tests with Praefect.
test-with-praefect: prepare-tests
	${Q}GITALY_TEST_WITH_PRAEFECT=YesPlease $(call run_go_tests)

.PHONY: test-postgres
## Run Go tests with Postgres.
test-postgres: TEST_PACKAGES := gitlab.com/gitlab-org/gitaly/v14/internal/praefect/...
test-postgres: test-go

.PHONY: race-go
## Run Go tests with race detection enabled.
race-go: TEST_OPTIONS := ${TEST_OPTIONS} -race
race-go: test-go

.PHONY: rspec
## Run Ruby tests.
rspec: build prepare-tests
	${Q}cd ${GITALY_RUBY_DIR} && PATH='${SOURCE_DIR}/internal/testhelper/testdata/home/bin:${PATH}' bundle exec rspec

.PHONY: verify
## Verify that various files conform to our expectations.
verify: check-mod-tidy notice-up-to-date check-proto rubocop lint

.PHONY: check-mod-tidy
check-mod-tidy:
	${Q}${GIT} diff --quiet --exit-code go.mod go.sum || (echo "error: uncommitted changes in go.mod or go.sum" && exit 1)
	${Q}go mod tidy
	${Q}${GIT} diff --quiet --exit-code go.mod go.sum || (echo "error: uncommitted changes in go.mod or go.sum" && exit 1)

.PHONY: lint
## Run Go linter.
lint: ${GOLANGCI_LINT} libgit2
	${Q}${GOLANGCI_LINT} run --build-tags "${GO_BUILD_TAGS}" --out-format tab --config ${GOLANGCI_LINT_CONFIG} ${GOLANGCI_LINT_OPTIONS}

.PHONY: format
## Run Go formatter and adjust imports.
format: ${GOIMPORTS} ${GOFUMPT}
	${Q}${GOIMPORTS} -w -l $(call find_go_sources)
	${Q}${GOFUMPT} -w $(call find_go_sources)
	${Q}${GOIMPORTS} -w -l $(call find_go_sources)

.PHONY: notice-up-to-date
notice-up-to-date: ${BUILD_DIR}/NOTICE
	${Q}(cmp ${BUILD_DIR}/NOTICE ${SOURCE_DIR}/NOTICE) || (echo >&2 "NOTICE requires update: 'make notice'" && false)

.PHONY: notice
## Regenerate the NOTICE file.
notice: ${SOURCE_DIR}/NOTICE

.PHONY: clean
## Clean up build artifacts.
clean:
	rm -rf ${BUILD_DIR} ${SOURCE_DIR}/ruby/.bundle/ ${SOURCE_DIR}/ruby/vendor/bundle/

.PHONY: clean-ruby-vendor-go
clean-ruby-vendor-go:
	mkdir -p ${SOURCE_DIR}/ruby/vendor && find ${SOURCE_DIR}/ruby/vendor -type f -name '*.go' -delete

.PHONY: check-proto
check-proto: proto no-proto-changes lint-proto

.PHONY: rubocop
## Run Rubocop.
rubocop: ${SOURCE_DIR}/.ruby-bundle
	${Q}cd ${GITALY_RUBY_DIR} && bundle exec rubocop --parallel

.PHONY: cover
## Generate coverage report via Go tests.
cover: TEST_OPTIONS  := ${TEST_OPTIONS} -coverprofile "${COVERAGE_DIR}/all.merged"
cover: prepare-tests libgit2 ${GOCOVER_COBERTURA}
	${Q}echo "NOTE: make cover does not exit 1 on failure, don't use it to check for tests success!"
	${Q}mkdir -p "${COVERAGE_DIR}"
	${Q}rm -f "${COVERAGE_DIR}/all.merged" "${COVERAGE_DIR}/all.html"
	${Q}$(call run_go_tests)
	${Q}go tool cover -html  "${COVERAGE_DIR}/all.merged" -o "${COVERAGE_DIR}/all.html"
	@ # sed is used below to convert file paths to repository root relative paths. See https://gitlab.com/gitlab-org/gitlab/-/issues/217664
	${Q}${GOCOVER_COBERTURA} <"${COVERAGE_DIR}/all.merged" | sed 's;filename=\"$(shell go list -m)/;filename=\";g' >"${COVERAGE_DIR}/cobertura.xml"
	${Q}echo ""
	${Q}echo "=====> Total test coverage: <====="
	${Q}echo ""
	${Q}go tool cover -func "${COVERAGE_DIR}/all.merged"

.PHONY: proto
## Regenerate protobuf definitions.
proto: SHARED_PROTOC_OPTS = --plugin=${PROTOC_GEN_GO} --plugin=${PROTOC_GEN_GO_GRPC} --go_opt=paths=source_relative --go-grpc_opt=paths=source_relative
proto: ${PROTOC} ${PROTOC_GEN_GO} ${PROTOC_GEN_GO_GRPC} ${SOURCE_DIR}/.ruby-bundle
	${Q}mkdir -p ${SOURCE_DIR}/proto/go/gitalypb
	${Q}rm -f ${SOURCE_DIR}/proto/go/gitalypb/*.pb.go
	${PROTOC} ${SHARED_PROTOC_OPTS} -I ${SOURCE_DIR}/proto -I ${PROTOC_INSTALL_DIR}/include --go_out=${SOURCE_DIR}/proto/go/gitalypb --go-grpc_out=${SOURCE_DIR}/proto/go/gitalypb ${SOURCE_DIR}/proto/*.proto
	${SOURCE_DIR}/_support/generate-proto-ruby
	@ # this part is related to the generation of sources from testing proto files
	${PROTOC} ${SHARED_PROTOC_OPTS} -I ${SOURCE_DIR}/internal --go_out=${SOURCE_DIR}/internal --go-grpc_out=${SOURCE_DIR}/internal ${SOURCE_DIR}/internal/praefect/grpc-proxy/testdata/test.proto
	${PROTOC} ${SHARED_PROTOC_OPTS} -I ${SOURCE_DIR}/proto -I ${SOURCE_DIR}/internal -I ${PROTOC_INSTALL_DIR}/include --go_out=${SOURCE_DIR}/internal --go-grpc_out=${SOURCE_DIR}/internal \
		${SOURCE_DIR}/internal/praefect/mock/mock.proto \
		${SOURCE_DIR}/internal/middleware/cache/testdata/stream.proto \
		${SOURCE_DIR}/internal/helper/chunk/testdata/test.proto \
		${SOURCE_DIR}/internal/middleware/limithandler/testdata/test.proto
	${PROTOC} ${SHARED_PROTOC_OPTS} -I ${SOURCE_DIR}/proto -I ${PROTOC_INSTALL_DIR}/include --go_out=${SOURCE_DIR}/proto --go-grpc_out=${SOURCE_DIR}/proto ${SOURCE_DIR}/proto/go/internal/linter/testdata/*.proto

.PHONY: lint-proto
lint-proto: ${PROTOC} ${PROTOC_GEN_GITALY}
	${Q}${PROTOC} --plugin=${PROTOC_GEN_GITALY} -I ${SOURCE_DIR}/proto -I ${PROTOC_INSTALL_DIR}/include --gitaly_out=proto_dir=${SOURCE_DIR}/proto,gitalypb_dir=${SOURCE_DIR}/proto/go/gitalypb:${SOURCE_DIR} ${SOURCE_DIR}/proto/*.proto

.PHONY: no-changes
no-changes:
	${Q}${GIT} diff --exit-code

.PHONY: no-proto-changes
no-proto-changes: | ${BUILD_DIR}
	${Q}${GIT} diff -- '*.pb.go' 'ruby/proto/gitaly' >${BUILD_DIR}/proto.diff
	${Q}if [ -s ${BUILD_DIR}/proto.diff ]; then echo "There is a difference in generated proto files. Please take a look at ${BUILD_DIR}/proto.diff file." && exit 1; fi

.PHONY: dump-database-schema
## Dump the clean database schema of Praefect into a file.
dump-database-schema: build
	${Q}"${SOURCE_DIR}"/_support/generate-praefect-schema >"${SOURCE_DIR}"/_support/praefect-schema.sql

.PHONY: smoke-test
smoke-test: TEST_PACKAGES := ${SOURCE_DIR}/internal/gitaly/rubyserver
smoke-test: all rspec
	$(call run_go_tests)

.PHONY: upgrade-module
upgrade-module:
	${Q}go run ${SOURCE_DIR}/_support/module-updater/main.go -dir . -from=${FROM_MODULE} -to=${TO_MODULE}
	${Q}${MAKE} proto

.PHONY: git
## Build Git.
git: ${GIT_PREFIX}/bin/git

.PHONY: libgit2
## Build libgit2.
libgit2: ${LIBGIT2_INSTALL_DIR}/lib/libgit2.a

# This file is used by Omnibus and CNG to skip the "bundle install"
# step. Both Omnibus and CNG assume it is in the Gitaly root, not in
# _build. Hence the '../' in front.
${SOURCE_DIR}/.ruby-bundle: ${GITALY_RUBY_DIR}/Gemfile.lock ${GITALY_RUBY_DIR}/Gemfile
	${Q}cd ${GITALY_RUBY_DIR} && bundle install
	${Q}touch $@

${SOURCE_DIR}/NOTICE: ${BUILD_DIR}/NOTICE
	${Q}mv $< $@

${BUILD_DIR}/NOTICE: ${GO_LICENSES} clean-ruby-vendor-go
	${Q}rm -rf ${BUILD_DIR}/licenses
	${Q}GOOS=linux GOFLAGS="-tags=${GO_BUILD_TAGS}" ${GO_LICENSES} save ./... --save_path=${BUILD_DIR}/licenses
	@ # some projects may be copied from the Go module cache
	@ # (GOPATH/pkg/mod) and retain strict permissions (444). These
	@ # permissions are not desirable when removing and rebuilding:
	${Q}find ${BUILD_DIR}/licenses -type d -exec chmod 0755 {} \;
	${Q}find ${BUILD_DIR}/licenses -type f -exec chmod 0644 {} \;
	${Q}go run ${SOURCE_DIR}/_support/noticegen/noticegen.go -source ${BUILD_DIR}/licenses -template ${SOURCE_DIR}/_support/noticegen/notice.template > ${BUILD_DIR}/NOTICE

${BUILD_DIR}:
	${Q}mkdir -p ${BUILD_DIR}
${BUILD_DIR}/bin: | ${BUILD_DIR}
	${Q}mkdir -p ${BUILD_DIR}/bin
${TOOLS_DIR}: | ${BUILD_DIR}
	${Q}mkdir -p ${TOOLS_DIR}
${DEPENDENCY_DIR}: | ${BUILD_DIR}
	${Q}mkdir -p ${DEPENDENCY_DIR}

# This is a build hack to avoid excessive rebuilding of targets. Instead of
# depending on the Makefile, we start to depend on tool versions as defined in
# the Makefile. Like this, we only rebuild if the tool versions actually
# change. The dependency on the phony target is required to always rebuild
# these targets.
.PHONY: dependency-version
${DEPENDENCY_DIR}/libgit2.version: dependency-version | ${DEPENDENCY_DIR}
	${Q}[ x"$$(cat "$@" 2>/dev/null)" = x"${LIBGIT2_VERSION} ${LIBGIT2_BUILD_OPTIONS}" ] || >$@ echo -n "${LIBGIT2_VERSION} ${LIBGIT2_BUILD_OPTIONS}"
${DEPENDENCY_DIR}/git.version: dependency-version | ${DEPENDENCY_DIR}
	${Q}[ x"$$(cat "$@" 2>/dev/null)" = x"${GIT_VERSION}.${GIT_EXTRA_VERSION} ${GIT_BUILD_OPTIONS} ${GIT_PATCHES}" ] || >$@ echo -n "${GIT_VERSION}.${GIT_EXTRA_VERSION} ${GIT_BUILD_OPTIONS} ${GIT_PATCHES}"
${DEPENDENCY_DIR}/protoc.version: dependency-version | ${DEPENDENCY_DIR}
	${Q}[ x"$$(cat "$@" 2>/dev/null)" = x"${PROTOC_VERSION} ${PROTOC_BUILD_OPTIONS}" ] || >$@ echo -n "${PROTOC_VERSION} ${PROTOC_BUILD_OPTIONS}"
${TOOLS_DIR}/%.version: dependency-version | ${TOOLS_DIR}
	${Q}[ x"$$(cat "$@" 2>/dev/null)" = x"${TOOL_VERSION}" ] || >$@ echo -n "${TOOL_VERSION}"

${LIBGIT2_INSTALL_DIR}/lib/libgit2.a: ${DEPENDENCY_DIR}/libgit2.version
	${Q}${GIT} -c init.defaultBranch=master init ${GIT_QUIET} ${LIBGIT2_SOURCE_DIR}
	${Q}${GIT} -C "${LIBGIT2_SOURCE_DIR}" config remote.origin.url ${LIBGIT2_REPO_URL}
	${Q}${GIT} -C "${LIBGIT2_SOURCE_DIR}" config remote.origin.tagOpt --no-tags
	${Q}${GIT} -C "${LIBGIT2_SOURCE_DIR}" fetch --depth 1 ${GIT_QUIET} origin ${LIBGIT2_VERSION}
	${Q}${GIT} -C "${LIBGIT2_SOURCE_DIR}" checkout ${GIT_QUIET} --detach FETCH_HEAD
	${Q}rm -rf ${LIBGIT2_BUILD_DIR}
	${Q}mkdir -p ${LIBGIT2_BUILD_DIR}
	${Q}cd ${LIBGIT2_BUILD_DIR} && cmake ${LIBGIT2_SOURCE_DIR} ${LIBGIT2_BUILD_OPTIONS}
	${Q}CMAKE_BUILD_PARALLEL_LEVEL=$(shell nproc) cmake --build ${LIBGIT2_BUILD_DIR} --target install
	go install -a github.com/libgit2/git2go/${GIT2GO_VERSION}

# This target is responsible for checking out Git sources. In theory, we'd only
# need to depend on the source directory. But given that the source directory
# always changes when anything inside of it changes, like when we for example
# build binaries inside of it, we cannot depend on it directly or we'd
# otherwise try to rebuild all targets depending on it whenever we build
# something else. We thus depend on the Makefile instead.
${GIT_SOURCE_DIR}/Makefile: ${DEPENDENCY_DIR}/git.version
	${Q}${GIT} -c init.defaultBranch=master init ${GIT_QUIET} ${GIT_SOURCE_DIR}
	${Q}${GIT} -C "${GIT_SOURCE_DIR}" config remote.origin.url ${GIT_REPO_URL}
	${Q}${GIT} -C "${GIT_SOURCE_DIR}" config remote.origin.tagOpt --no-tags
	${Q}${GIT} -C "${GIT_SOURCE_DIR}" fetch --depth 1 ${GIT_QUIET} origin ${GIT_VERSION}
	${Q}${GIT} -C "${GIT_SOURCE_DIR}" reset --hard
	${Q}${GIT} -C "${GIT_SOURCE_DIR}" checkout ${GIT_QUIET} --detach FETCH_HEAD
ifdef GIT_PATCHES
	${Q}${GIT} -C "${GIT_SOURCE_DIR}" apply $(addprefix "${SOURCE_DIR}"/_support/git-patches/,${GIT_PATCHES})
endif
	@ # We're writing the version into the "version" file in Git's own source
	@ # directory. If it exists, Git's Makefile will pick it up and use it as
	@ # the version instead of auto-detecting via git-describe(1).
ifdef GIT_EXTRA_VERSION
	${Q}echo ${GIT_VERSION}.${GIT_EXTRA_VERSION} >"${GIT_SOURCE_DIR}"/version
else
	${Q}rm -f "${GIT_SOURCE_DIR}"/version
endif
	${Q}touch $@

${GIT_SOURCE_DIR}/%: ${GIT_SOURCE_DIR}/Makefile
	${Q}env -u PROFILE -u MAKEFLAGS -u GIT_VERSION ${MAKE} -C ${GIT_SOURCE_DIR} -j$(shell nproc) prefix=${GIT_PREFIX} ${GIT_BUILD_OPTIONS} $(notdir $@)
	${Q}touch $@

${GIT_PREFIX}/bin/git: ${GIT_SOURCE_DIR}/Makefile
	@ # Remove the Git installation first in case GIT_PREFIX is the default
	@ # prefix which always points into our build directory. This is done so
	@ # we never end up with mixed Git installations on developer machines.
	@ # We cannot ever remove GIT_PREFIX though in case they're different
	@ # because it may point to a user-controlled directory.
	${Q}if [ "x${GIT_DEFAULT_PREFIX}" = "x${GIT_PREFIX}" ]; then rm -rf "${GIT_DEFAULT_PREFIX}"; fi
	${Q}env -u PROFILE -u MAKEFLAGS -u GIT_VERSION ${MAKE} -C ${GIT_SOURCE_DIR} -j$(shell nproc) prefix=${GIT_PREFIX} ${GIT_BUILD_OPTIONS} install
	${Q}touch $@

${PROTOC}: ${DEPENDENCY_DIR}/protoc.version | ${TOOLS_DIR}
	${Q}${GIT} -c init.defaultBranch=master init ${GIT_QUIET} "${PROTOC_SOURCE_DIR}"
	${Q}${GIT} -C "${PROTOC_SOURCE_DIR}" config remote.origin.url ${PROTOC_REPO_URL}
	${Q}${GIT} -C "${PROTOC_SOURCE_DIR}" config remote.origin.tagOpt --no-tags
	${Q}${GIT} -C "${PROTOC_SOURCE_DIR}" fetch --depth 1 ${GIT_QUIET} origin ${PROTOC_VERSION}
	${Q}${GIT} -C "${PROTOC_SOURCE_DIR}" checkout ${GIT_QUIET} --detach FETCH_HEAD
	${Q}${GIT} -C "${PROTOC_SOURCE_DIR}" submodule update --init --recursive
	${Q}rm -rf "${PROTOC_BUILD_DIR}"
	${Q}cmake "${PROTOC_SOURCE_DIR}"/cmake -B "${PROTOC_BUILD_DIR}" ${PROTOC_BUILD_OPTIONS}
	${Q}cmake --build "${PROTOC_BUILD_DIR}" --target install -- -j $(shell nproc)
	${Q}cp "${PROTOC_INSTALL_DIR}"/bin/protoc ${PROTOC}

${TOOLS_DIR}/%: GOBIN = ${TOOLS_DIR}
${TOOLS_DIR}/%: ${TOOLS_DIR}/%.version
	${Q}go install ${TOOL_PACKAGE}@${TOOL_VERSION}

${PROTOC_GEN_GITALY}: proto | ${TOOLS_DIR}
	${Q}go build -o $@ ${SOURCE_DIR}/proto/go/internal/cmd/protoc-gen-gitaly

# External tools
${GOCOVER_COBERTURA}: TOOL_PACKAGE = github.com/t-yuki/gocover-cobertura
${GOCOVER_COBERTURA}: TOOL_VERSION = ${GOCOVER_COBERTURA_VERSION}
${GOFUMPT}:           TOOL_PACKAGE = mvdan.cc/gofumpt
${GOFUMPT}:           TOOL_VERSION = v${GOFUMPT_VERSION}
${GOIMPORTS}:         TOOL_PACKAGE = golang.org/x/tools/cmd/goimports
${GOIMPORTS}:         TOOL_VERSION = ${GOIMPORTS_VERSION}
${GOLANGCI_LINT}:     TOOL_PACKAGE = github.com/golangci/golangci-lint/cmd/golangci-lint
${GOLANGCI_LINT}:     TOOL_VERSION = v${GOLANGCI_LINT_VERSION}
${GOTESTSUM}:         TOOL_PACKAGE = gotest.tools/gotestsum
${GOTESTSUM}:         TOOL_VERSION = ${GOSUMTEST_VERSION}
${GO_LICENSES}:       TOOL_PACKAGE = github.com/google/go-licenses
${GO_LICENSES}:       TOOL_VERSION = ${GO_LICENSES_VERSION}
${PROTOC_GEN_GO}:     TOOL_PACKAGE = google.golang.org/protobuf/cmd/protoc-gen-go
${PROTOC_GEN_GO}:     TOOL_VERSION = v${PROTOC_GEN_GO_VERSION}
${PROTOC_GEN_GO_GRPC}:TOOL_PACKAGE = google.golang.org/grpc/cmd/protoc-gen-go-grpc
${PROTOC_GEN_GO_GRPC}:TOOL_VERSION = v${PROTOC_GEN_GO_GRPC_VERSION}

${TEST_REPO}:
	${GIT} clone --bare ${GIT_QUIET} https://gitlab.com/gitlab-org/gitlab-test.git $@
	@ # Git notes aren't fetched by default with git clone
	${GIT} -C $@ fetch ${GIT_QUIET} origin refs/notes/*:refs/notes/*
	${Q}rm -rf $@/refs
	${Q}mkdir -p $@/refs/heads $@/refs/tags
	${Q}cp ${SOURCE_DIR}/_support/gitlab-test.git-packed-refs $@/packed-refs
	${Q}${GIT} -C $@ fsck --no-progress --no-dangling

${TEST_REPO_GIT}:
	${GIT} clone --bare ${GIT_QUIET} https://gitlab.com/gitlab-org/gitlab-git-test.git $@
	${Q}rm -rf $@/refs
	${Q}mkdir -p $@/refs/heads $@/refs/tags
	${Q}cp ${SOURCE_DIR}/_support/gitlab-git-test.git-packed-refs $@/packed-refs
	${Q}${GIT} -C $@ fsck --no-progress --no-dangling

${BENCHMARK_REPO}:
	${GIT} clone --bare ${GIT_QUIET} https://gitlab.com/gitlab-org/gitlab.git $@