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

EAPI=5
SCONS_MIN_VERSION="2.3.0"
CHECKREQS_DISK_BUILD="2400M"
CHECKREQS_DISK_USR="512M"
CHECKREQS_MEMORY="1024M"

inherit eutils flag-o-matic multilib pax-utils scons-utils systemd toolchain-funcs user versionator check-reqs

MY_P=${PN}-src-r${PV/_rc/-rc}

DESCRIPTION="A high-performance, open source, schema-free document-oriented database"
HOMEPAGE="http://www.mongodb.org"
SRC_URI="https://fastdl.mongodb.org/src/${MY_P}.tar.gz"

LICENSE="AGPL-3 Apache-2.0"
SLOT="0"
KEYWORDS="~amd64 ~x86"
IUSE="debug kerberos libressl mms-agent ssl test +tools"

RDEPEND=">=app-arch/snappy-1.1.3
	>=dev-cpp/yaml-cpp-0.5.3
	>=dev-libs/boost-1.60[threads(+)]
	>=dev-libs/libpcre-8.39[cxx]
	dev-libs/snowball-stemmer
	net-libs/libpcap
	>=sys-libs/zlib-1.2.8
	mms-agent? ( app-admin/mms-agent )
	ssl? (
		!libressl? ( >=dev-libs/openssl-1.0.1g:0= )
		libressl? ( dev-libs/libressl:0= )
	)"
DEPEND="${RDEPEND}
	>=sys-devel/gcc-5.3.0:*
	sys-libs/ncurses
	sys-libs/readline
	debug? ( dev-util/valgrind )
	kerberos? ( dev-libs/cyrus-sasl[kerberos] )
	test? (
		dev-python/pymongo
		dev-python/pyyaml
	)"
PDEPEND="tools? ( >=app-admin/mongo-tools-${PV} )"

S=${WORKDIR}/${MY_P}

pkg_pretend() {
	if [[ ${REPLACING_VERSIONS} < 3.0 ]]; then
		ewarn "To upgrade from a version earlier than the 3.0-series, you must"
		ewarn "successively upgrade major releases until you have upgraded"
		ewarn "to 3.2-series. Then upgrade to 3.4 series."
	fi
}

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

	# Maintainer notes
	#
	# --use-system-tcmalloc is strongly NOT recommended:
	# https://www.mongodb.org/about/contributors/tutorial/build-mongodb-from-source/

	scons_opts=(
		CC="$(tc-getCC)"
		CXX="$(tc-getCXX)"

		--disable-warnings-as-errors
		--use-system-boost
		--use-system-pcre
		--use-system-snappy
		--use-system-stemmer
		--use-system-yaml
		--use-system-zlib
	)

	# wiredtiger not supported on 32bit platforms #572166
	use x86 && scons_opts+=( --wiredtiger=off )

	if use debug; then
		scons_opts+=( --dbg=on )
	fi

	if use prefix; then
		scons_opts+=(
			--cpppath="${EPREFIX}/usr/include"
			--libpath="${EPREFIX}/usr/$(get_libdir)"
		)
	fi

	if use kerberos; then
		scons_opts+=( --use-sasl-client )
	fi

	if use ssl; then
		scons_opts+=( --ssl )
	fi
}

src_prepare() {
	epatch \
		"${FILESDIR}/${PN}-3.4.0-fix-scons.patch" \
		"${FILESDIR}/${PN}-3.4.4-Replace-string-with-explicit-std-string.patch"
	if has_version ">=dev-libs/boost-1.62"; then
		epatch "${FILESDIR}/${PN}-3.2.10-boost-1.62.patch"
	fi
	epatch_user
}

src_compile() {
	# respect mongoDB upstream's basic recommendations
	# see bug #536688 and #526114
	if ! use debug; then
		filter-flags '-m*'
		filter-flags '-O?'
	fi
	escons "${scons_opts[@]}" core tools
}

src_install() {
	escons "${scons_opts[@]}" --nostrip install --prefix="${ED}"/usr

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

	doman debian/mongo*.1
	dodoc README docs/building.md

	newinitd "${FILESDIR}/${PN}.initd-r2" ${PN}
	newconfd "${FILESDIR}/${PN}.confd-r2" ${PN}
	newinitd "${FILESDIR}/${PN/db/s}.initd-r2" ${PN/db/s}
	newconfd "${FILESDIR}/${PN/db/s}.confd-r2" ${PN/db/s}

	insinto /etc
	newins "${FILESDIR}/${PN}.conf-r3" ${PN}.conf
	newins "${FILESDIR}/${PN/db/s}.conf-r2" ${PN/db/s}.conf

	systemd_dounit "${FILESDIR}/${PN}.service"

	insinto /etc/logrotate.d/
	newins "${FILESDIR}/${PN}.logrotate" ${PN}

	# see bug #526114
	pax-mark emr "${ED}"/usr/bin/{mongo,mongod,mongos}
}

pkg_preinst() {
	# wrt bug #461466
	if [[ "$(get_libdir)" == "lib64" ]]; then
		rmdir "${ED}"/usr/lib/ &>/dev/null
	fi
}

src_test() {
	# this one test fails
	rm jstests/core/repl_write_threads_start_param.js

	./buildscripts/resmoke.py --dbpathPrefix=test --suites core || die "Tests failed"
}

pkg_postinst() {
	local v
	for v in ${REPLACING_VERSIONS}; do
		if ! version_is_at_least 3.0 ${v}; then
			ewarn "!! IMPORTANT !!"
			ewarn " "
			ewarn "${PN} configuration files have changed !"
			ewarn " "
			ewarn "Make sure you migrate from /etc/conf.d/${PN} to the new YAML standard in /etc/${PN}.conf"
			ewarn "  http://docs.mongodb.org/manual/reference/configuration-options/"
			ewarn " "
			ewarn "Make sure you also follow the upgrading process :"
			ewarn "  http://docs.mongodb.org/master/release-notes/3.0-upgrade/"
			ewarn " "
			ewarn "MongoDB 3.0 introduces the WiredTiger storage engine."
			ewarn "WiredTiger is incompatible with MMAPv1 and you need to dump/reload your data if you want to use it."
			ewarn "Once you have your data dumped, you need to set storage.engine: wiredTiger in /etc/${PN}.conf"
			ewarn "  http://docs.mongodb.org/master/release-notes/3.0-upgrade/#change-storage-engine-to-wiredtiger"
			break
		fi
	done

	ewarn "Make sure to read the release notes and follow the upgrade process:"
	ewarn "  https://docs.mongodb.org/manual/release-notes/3.4/"
	ewarn "  https://docs.mongodb.com/manual/release-notes/3.4/#upgrade-procedures"
}