#!/usr/bin/make -f

#
# Copyright (c) 2023 Wind River Systems, Inc.
#
# SPDX-License-Identifier: Apache-2.0
#

# This debian/rules file is based on:
# https://packages.debian.org/source/bookworm/kubernetes
# http://deb.debian.org/debian/pool/main/k/kubernetes/kubernetes_1.20.5+really1.20.2-1.1.debian.tar.xz

# Customizations support kubernetes upgrades:
# - specific directory locations with kubernetes version, upgrades stage,
#   and version specific golang compiler
# - build output not required on the production host is moved to
#   kubernetes-misc package

kube_version := 1.27.5
kube_git_version := v${kube_version}
name := kubernetes-${kube_version}
go_version := 1.20.7
_stage1 := /usr/local/kubernetes/${kube_version}/stage1
_stage2 := /usr/local/kubernetes/${kube_version}/stage2
_bindir := /usr/bin
kube_dir := src/k8s.io/kubernetes
output_dir := ${kube_dir}/_output
output_bindir := ${output_dir}/bin
output_mandir := ${output_dir}/man
DEBIAN_DESTDIR := $(CURDIR)/debian/tmp
export DH_VERBOSE = 1
export PATH := /usr/lib/go-1.20/bin:$(PATH)
export KUBE_GIT_TREE_STATE="clean"
export KUBE_GIT_COMMIT=${kube_version}
export KUBE_GIT_VERSION=${kube_git_version}
export KUBE_EXTRA_GOPATH=$(pwd)/Godeps/_workspace
export PBR_VERSION=${kube_git_version}

bins = kube-proxy kube-apiserver kube-controller-manager kubelet kubeadm kube-scheduler kubectl

%:
	dh $@ --with=bash-completion --builddirectory=src --without=build-stamp

override_dh_auto_build:
	# we support multiple go compilers; indicate the version we are using
	go version
	which go

	mkdir -pv ${kube_dir}
        # keep the .go-version and ignore unwanted files
	mv -v $$(ls -a -I ".." -I "." -I ".git*" -I ".generated_files" | grep -v "^src$$" | grep -v "^debian$$") ${kube_dir}/.
	cd ${kube_dir} && make WHAT="$(addprefix cmd/,$(bins) genman)"

	# manpages
	mkdir -p ${output_mandir}
	echo $(bins) | xargs --max-args=1 ${output_bindir}/genman ${output_mandir}

	# NOTICE files
	find ${kube_dir}/vendor -name '*NOTICE*' -print0 | xargs -0 head -n1000 > ${output_dir}/NOTICE

override_dh_install:
	# kube_version stage1
	install -m 755 -d ${DEBIAN_DESTDIR}${_stage1}${_bindir}
	install -p -m 755 -t ${DEBIAN_DESTDIR}${_stage1}${_bindir} ${output_bindir}/kubeadm

	# kube_version stage2
	install -m 755 -d ${DEBIAN_DESTDIR}${_stage2}${_bindir}
	install -d -m 0755 ${DEBIAN_DESTDIR}${_stage2}/etc/systemd/system/kubelet.service.d
	install -p -m 0644 -t ${DEBIAN_DESTDIR}${_stage2}/etc/systemd/system/kubelet.service.d debian/kubeadm.conf
	install -p -m 0700 -t ${DEBIAN_DESTDIR}${_stage2}${_bindir} debian/kubelet-cgroup-setup.sh
	install -p -m 750 -t ${DEBIAN_DESTDIR}${_stage2}${_bindir} ${output_bindir}/kubelet
	install -p -m 755 -t ${DEBIAN_DESTDIR}${_stage2}${_bindir} ${output_bindir}/kubectl
	# bash completions
	install -d -m 0755 ${DEBIAN_DESTDIR}${_stage2}/usr/share/bash-completion/completions/
	${DEBIAN_DESTDIR}${_stage2}${_bindir}/kubectl completion bash > ${DEBIAN_DESTDIR}${_stage2}/usr/share/bash-completion/completions/kubectl

	# remaining are not kube_version staged, i.e., kubernetes-master, kubernetes-misc
	install -m 755 -d ${DEBIAN_DESTDIR}${_bindir}
	install -p -m 750 -t ${DEBIAN_DESTDIR}${_bindir} ${output_bindir}/kube-apiserver
	install -p -m 750 -t ${DEBIAN_DESTDIR}${_bindir} ${output_bindir}/kube-controller-manager
	install -p -m 750 -t ${DEBIAN_DESTDIR}${_bindir} ${output_bindir}/kube-scheduler
	install -p -m 750 -t ${DEBIAN_DESTDIR}${_bindir} ${output_bindir}/kube-proxy

	# specific cluster addons for optional use
	install -d -m 0755 ${DEBIAN_DESTDIR}/etc/${name}/addons

	# Addon: volumesnapshots
	install -d -m 0755 ${DEBIAN_DESTDIR}/etc/${name}/addons/volumesnapshots
	install -d -m 0755 ${DEBIAN_DESTDIR}/etc/${name}/addons/volumesnapshots/crd
	install -m 0644 -t ${DEBIAN_DESTDIR}/etc/${name}/addons/volumesnapshots/crd ${kube_dir}/cluster/addons/volumesnapshots/crd/*
	install -d -m 0755 ${DEBIAN_DESTDIR}/etc/${name}/addons/volumesnapshots/volume-snapshot-controller
	install -m 0644 -t ${DEBIAN_DESTDIR}/etc/${name}/addons/volumesnapshots/volume-snapshot-controller ${kube_dir}/cluster/addons/volumesnapshots/volume-snapshot-controller/*

	# unit-test
	# - everything from the root directory is needed
	# - unit-tests needs source code
	# - integration tests needs docs and other files
	# - test-cmd.sh atm needs cluster, examples and other
	install -d -m 0755 ${DEBIAN_DESTDIR}/var/lib/kubernetes-unit-test/
	cp -a src ${DEBIAN_DESTDIR}/var/lib/kubernetes-unit-test/
	# remove generated output, i.e., binaries, go cache, man pages, violations report
	rm -rf ${DEBIAN_DESTDIR}/var/lib/kubernetes-unit-test/${output_dir}

	dh_install

override_dh_auto_test:
	${kube_dir}/hack/test-cmd.sh
	${kube_dir}/hack/benchmark-go.sh
	${kube_dir}/hack/test-go.sh
	${kube_dir}/hack/test-integration.sh --use_go_build

override_dh_fixperms:
	dh_fixperms -Xkube-apiserver -Xkubeadm -Xkubeadm.conf \
		-Xkubelet-cgroup-setup.sh -Xkube-apiserver \
		-Xkube-controller-manager -Xkube-scheduler \
		-Xkube-proxy -Xkubelet -Xkubectl

override_dh_usrlocal: