# Copyright 1999-2023 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=8

DISTUTILS_USE_PEP517=setuptools
PYTHON_COMPAT=( python3_{9..11} )

inherit distutils-r1 pypi

DESCRIPTION="Backend data caching and persistence daemon for Graphite"
HOMEPAGE="https://graphiteapp.org/"

SLOT="0"
LICENSE="Apache-2.0"
KEYWORDS="~amd64 ~x86"

# whisper appears to have been missed from listing in install_requires in setup.py
RDEPEND="
	dev-python/twisted[${PYTHON_USEDEP}]
	dev-python/cachetools[${PYTHON_USEDEP}]
	dev-python/urllib3[${PYTHON_USEDEP}]
	=dev-python/whisper-${PV}*[${PYTHON_USEDEP}]"

python_prepare_all() {
	# Do not install the configuration and data files. We install them
	# somewhere sensible by hand.
	sed -i -e '/data_files=install_files,/d' setup.py || die
	# We want FHS-style paths instead of /opt/graphite
	export GRAPHITE_NO_PREFIX=yes
	distutils-r1_python_prepare_all
}

python_install_all() {
	distutils-r1_python_install_all

	insinto /etc/carbon
	doins conf/*

	keepdir /var/log/carbon /var/lib/carbon/{whisper,lists,rrd}

	newinitd "${FILESDIR}"/carbon.initd2 carbon-cache
	newinitd "${FILESDIR}"/carbon.initd2 carbon-relay
	newinitd "${FILESDIR}"/carbon.initd2 carbon-aggregator

	newconfd "${FILESDIR}"/carbon.confd carbon-cache
	newconfd "${FILESDIR}"/carbon.confd carbon-relay
	newconfd "${FILESDIR}"/carbon.confd carbon-aggregator
}

pkg_postinst() {
	einfo 'This ebuild installs carbon into FHS-style paths.'
	einfo 'You will probably have to set GRAPHITE_CONF_DIR to /etc/carbon'
	einfo 'and GRAPHITE_STORAGE_DIR to /var/lib/carbon to make use of this'
	einfo '(see /etc/carbon/carbon.conf.example).'
	einfo ' '
	einfo 'OpenRC init script supports multiple instances !'
	einfo 'Example to run an instance b of carbon-cache :'
	einfo '    ln -s /etc/init.d/carbon-cache /etc/init.d/carbon-cache.b'
	einfo '    cp /etc/conf.d/carbon-cache /etc/conf.d/carbon-cache.b'
}