# Copyright 1999-2017 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

EAPI=6
inherit user golang-build golang-vcs-snapshot

EGO_PN="github.com/prometheus/prometheus"
EGIT_COMMIT="v${PV}"
PROMETHEUS_COMMIT="3a7c51a"
ARCHIVE_URI="https://${EGO_PN}/archive/${EGIT_COMMIT}.tar.gz -> ${P}.tar.gz"
KEYWORDS="~amd64"

DESCRIPTION="Prometheus monitoring system and time series database"
HOMEPAGE="https://github.com/prometheus/prometheus"
SRC_URI="${ARCHIVE_URI}"
LICENSE="Apache-2.0"
SLOT="0"
IUSE=""

DEPEND=">=dev-lang/go-1.8
	dev-util/promu"

PROMETHEUS_HOME="/var/lib/prometheus"

RESTRICT="test"

pkg_setup() {
	enewgroup prometheus
	enewuser prometheus -1 -1 "${PROMETHEUS_HOME}" prometheus
}

src_prepare() {
	default
	sed -i -e "s/{{.Revision}}/${PROMETHEUS_COMMIT}/" src/${EGO_PN}/.promu.yml || die
}

src_compile() {
	pushd src/${EGO_PN} || die
	GOPATH="${S}" promu build -v || die
	popd || die
}

src_install() {
	pushd src/${EGO_PN} || die
	dobin promtool prometheus
	dodoc -r {documentation,{README,CHANGELOG,CONTRIBUTING}.md}
	insinto /etc/prometheus
	doins documentation/examples/prometheus.yml
	insinto /usr/share/prometheus
	doins -r console_libraries consoles
	dosym ../../usr/share/prometheus/console_libraries /etc/prometheus/console_libraries
	dosym ../../usr/share/prometheus/consoles /etc/prometheus/consoles
	popd || die

	newinitd "${FILESDIR}"/prometheus.initd prometheus
	newconfd "${FILESDIR}"/prometheus.confd prometheus
	keepdir /var/log/prometheus /var/lib/prometheus
	fowners prometheus:prometheus /var/log/prometheus /var/lib/prometheus
}