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# Copyright 1999-2016 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Id$

EAPI=6

inherit golang-base systemd user

GO_PN="github.com/hashicorp/consul"

DESCRIPTION="A tool for service discovery, monitoring and configuration"
HOMEPAGE="http://www.consul.io"
SRC_URI="https://github.com/hashicorp/consul/archive/v${PV}.tar.gz -> ${P}.tar.gz
	https://github.com/mitchellh/gox/archive/c9740af9c6574448fd48eb30a71f964014c7a837.tar.gz -> gox-c9740af9c6574448fd48eb30a71f964014c7a837.tar.gz
	https://github.com/mitchellh/iochan/archive/87b45ffd0e9581375c491fef3d32130bb15c5bd7.tar.gz -> iochan-87b45ffd0e9581375c491fef3d32130bb15c5bd7.tar.gz
"

SLOT="0"
LICENSE="MPL-2.0"
KEYWORDS="~amd64"
IUSE=""

RESTRICT="test"

DEPEND="
	app-arch/zip
	>=dev-lang/go-1.6:=
	>=dev-go/go-tools-0_pre20160121"
RDEPEND=""

STRIP_MASK="*.a"

S="${WORKDIR}/src/${GO_PN}"

pkg_setup() {
	enewgroup consul
	enewuser consul -1 -1 /var/lib/${PN} consul
}

get_archive_go_package() {
	local archive=${1} uri x
	for x in ${SRC_URI}; do
		if [[ ${x} == http* ]]; then
			uri=${x}
		elif [[ ${x} == ${archive} ]]; then
			break
		fi
	done
	uri=${uri#https://}
	echo ${uri%/archive/*}
}

unpack_go_packages() {
	local go_package x
	# Unpack packages to appropriate locations for GOPATH
	for x in ${A}; do
		unpack ${x}
		if [[ ${x} == *.tar.gz ]]; then
			go_package=$(get_archive_go_package ${x})
			mkdir -p src/${go_package%/*}
			mv ${go_package##*/}-* src/${go_package} || die
		fi
	done
}

src_unpack() {
	unpack_go_packages
}

src_prepare() {
	eapply_user
	# Avoid the need to have a git checkout
	sed -e 's:^GIT.*::' \
		-e 's:-X main.GitCommit.*:" \\:' \
		-i scripts/build.sh || die

	# go install golang.org/x/tools/cmd/stringer: mkdir /usr/lib/go-gentoo/bin/: permission denied
	sed -e 's:go get -u -v $(GOTOOLS)::' \
		-i GNUmakefile || die
}

src_compile() {
	export GOPATH="${WORKDIR}:$(get_golibdir_gopath)"
	go install -v -work -x ${EGO_BUILD_FLAGS} "github.com/mitchellh/gox/..." || die
	go install -v -work -x ${EGO_BUILD_FLAGS} "${GO_PN}/..." || die
	PATH=${PATH}:${WORKDIR}/bin XC_ARCH=$(go env GOARCH) XC_OS=$(go env GOOS) emake
}

src_install() {
	local x

	dobin "${WORKDIR}/bin/${PN}"
	rm -rf bin || die

	keepdir /etc/consul.d
	insinto /etc/consul.d
	doins "${FILESDIR}/"*.json.example
	rm "${ED}etc/consul.d/ui-dir.json.example" || die

	for x in /var/{lib,log}/${PN}; do
		keepdir "${x}"
		fowners consul:consul "${x}"
	done

	newinitd "${FILESDIR}/consul.initd" "${PN}"
	newconfd "${FILESDIR}/consul.confd" "${PN}"
	systemd_dounit "${FILESDIR}/consul.service"

	find "${WORKDIR}"/src/${GO_PN} -mindepth 1 -maxdepth 1 -type f -delete || die
	rm -rf "${WORKDIR}"/{src,pkg/$(go env GOOS)_$(go env GOARCH)}/${GO_PN}/vendor

	while read -r -d '' x; do
		x=${x#${WORKDIR}/src}
		[[ -d ${WORKDIR}/pkg/$(go env GOOS)_$(go env GOARCH)/${x} ||
			-f ${WORKDIR}/pkg/$(go env GOOS)_$(go env GOARCH)/${x}.a ]] && continue
		rm -rf "${WORKDIR}"/src/${x}
	done < <(find "${WORKDIR}"/src/${GO_PN} -mindepth 1 -maxdepth 1 -type d -print0)
	insopts -m0644 -p # preserve timestamps for bug 551486
	insinto "$(get_golibdir)/pkg/$(go env GOOS)_$(go env GOARCH)/${GO_PN%/*}"
	doins -r "${WORKDIR}"/pkg/$(go env GOOS)_$(go env GOARCH)/${GO_PN}
	insinto "$(get_golibdir)/src/${GO_PN%/*}"
	doins -r "${WORKDIR}"/src/${GO_PN}
}