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# Copyright 1999-2020 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=7
inherit golang-build golang-vcs-snapshot systemd
EGO_PN="github.com/prometheus/node_exporter"
EGIT_COMMIT="v${PV/_rc/-rc.}"
NODE_EXPORTER_COMMIT="ef7c058"
ARCHIVE_URI="https://${EGO_PN}/archive/${EGIT_COMMIT}.tar.gz -> ${P}.tar.gz"
KEYWORDS="~amd64"
DESCRIPTION="Prometheus exporter for machine metrics"
HOMEPAGE="https://github.com/prometheus/node_exporter"
SRC_URI="${ARCHIVE_URI}"
LICENSE="Apache-2.0 BSD BSD-2 MIT"
SLOT="0"
IUSE=""
CDEPEND="acct-group/node_exporter
acct-user/node_exporter"
DEPEND=">=dev-lang/go-1.12
>=dev-util/promu-0.3.0
${CDEPEND}"
RDEPEND="${CDEPEND}"
src_prepare() {
default
sed -i -e "s/{{.Revision}}/${NODE_EXPORTER_COMMIT}/" src/${EGO_PN}/.promu.yml || die
}
src_compile() {
pushd src/${EGO_PN} || die
mkdir -p bin || die
GO111MODULE=on GOPATH="${S}" GOCACHE="${T}"/go-cache promu build -v --prefix node_exporter || die
popd || die
}
src_install() {
# binary and docs
dobin src/"${EGO_PN}"/node_exporter/node_exporter
dodoc src/"${EGO_PN}"/{README,CHANGELOG,CONTRIBUTING}.md
# systemd
systemd_dounit "${FILESDIR}/${PN}.service"
insinto /etc/sysconfig
newins src/"${EGO_PN}"/examples/systemd/sysconfig.node_exporter node_exporter
# openrc
newinitd "${FILESDIR}"/${PN}-1.initd ${PN}
newconfd "${FILESDIR}"/${PN}.confd ${PN}
# maintence
keepdir /var/lib/node_exporter /var/log/node_exporter
fowners ${PN}:${PN} /var/lib/node_exporter /var/log/node_exporter
}
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