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# Copyright 1999-2016 Gentoo Foundation

# Distributed under the terms of the GNU General Public License v2

# $Id$

EAPI=6

inherit linux-info systemd user

if [[ ${PV} == "9999" ]] ; then

EGIT_REPO_URI="git://github.com/firehol/${PN}.git"

inherit git-r3 autotools

SRC_URI=""

KEYWORDS=""

else

SRC_URI="http://firehol.org/download/${PN}/releases/v${PV}/${P}.tar.xz"

KEYWORDS="~amd64 ~x86"

fi

DESCRIPTION="Linux real time system monitoring, done right!"

HOMEPAGE="https://github.com/firehol/netdata http://netdata.firehol.org/"

LICENSE="GPL-3+ MIT BSD"

SLOT="0"

IUSE="+compression nfacct nodejs"

# most unconditional dependencies are for plugins.d/charts.d.plugin:

RDEPEND="

>=app-shells/bash-4:0

net-misc/curl

net-misc/wget

virtual/awk

compression? ( sys-libs/zlib )

nfacct? (

net-firewall/nfacct

net-libs/libmnl

)

nodejs? (

net-libs/nodejs

)"

DEPEND="${RDEPEND}

virtual/pkgconfig"

# check for Kernel-Samepage-Merging (CONFIG_KSM)

CONFIG_CHECK="

~KSM

"

: ${NETDATA_USER:=netdata}

: ${NETDATA_GROUP:=netdata}

pkg_setup() {

linux-info_pkg_setup

enewgroup ${PN}

enewuser ${PN} -1 -1 / ${PN}

}

src_prepare() {

default

[[ ${PV} == "9999" ]] && eautoreconf

}

src_configure() {

econf \

--localstatedir=/var \

--with-user=${NETDATA_USER} \

$(use_enable nfacct plugin-nfacct) \

$(use_with compression zlib)

}

src_install() {

default

fowners ${NETDATA_USER}:${NETDATA_GROUP} /var/log/netdata

fowners ${NETDATA_USER}:${NETDATA_GROUP} /var/cache/netdata

chown -Rc ${NETDATA_USER}:${NETDATA_GROUP} "${ED}"/usr/share/${PN} || die

cat >> "${T}"/${PN}-sysctl <<- EOF

kernel.mm.ksm.run = 1

kernel.mm.ksm.sleep_millisecs = 1000

EOF

dodoc "${T}"/${PN}-sysctl

newinitd system/netdata-openrc ${PN}

systemd_dounit system/netdata.service

}

pkg_postinst() {

if [[ -e "/sys/kernel/mm/ksm/run" ]]; then

elog "INFORMATION:"

echo ""

elog "I see you have kernel memory de-duper (called Kernel Same-page Merging,"

elog "or KSM) available, but it is not currently enabled."

echo ""

elog "To enable it run:"

echo ""

elog "echo 1 >/sys/kernel/mm/ksm/run"

elog "echo 1000 >/sys/kernel/mm/ksm/sleep_millisecs"

echo ""

elog "If you enable it, you will save 20-60% of netdata memory."

else

elog "INFORMATION:"

echo ""

elog "I see you do not have kernel memory de-duper (called Kernel Same-page"

elog "Merging, or KSM) available."

echo ""

elog "To enable it, you need a kernel built with CONFIG_KSM=y"

echo ""

elog "If you can have it, you will save 20-60% of netdata memory."

fi

}