# Copyright 1999-2015 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Id$

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 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 +tools test"

RDEPEND=">=app-arch/snappy-1.1.2
	>=dev-cpp/yaml-cpp-0.5.1
	>=dev-libs/boost-1.56[threads(+)]
	>=dev-libs/libpcre-8.36[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:= )
	)"
DEPEND="${RDEPEND}
	>=sys-devel/gcc-4.8.2:*
	sys-libs/ncurses
	sys-libs/readline
	dev-util/valgrind
	kerberos? ( dev-libs/cyrus-sasl[kerberos] )
	test? ( 
		dev-python/pymongo 
		dev-python/pyyaml
	)"
PDEPEND="tools? ( >=app-admin/mongo-tools-${PV} )"

S=${WORKDIR}/${MY_P}

pkg_setup() {
	if [[ ${REPLACING_VERSIONS} < 3.0 ]]; then
		ewarn "!! ERROR !!"
                ewarn "You cannot directly upgrade a mongodb version 2.x"
                ewarn "deployment to ${PN}-${PV}. Instead, you must upgrade"
                ewarn "to a 3.0.x version first and then upgrade that to"
                ewarn "${PN}-${PV}. "
                ewarn " "
                ewarn "Terminating ebuild."
                die "Terminating ebuild."
        fi

        # Determine if a mongod is running at this time
        # Issue warning and die if server is running.

        ps -A | grep -q '[m]ongod'
        if [ "$?" -eq "0" ]; then
               ewarn "!! ERROR!!"
               ewarn "You must shut down the running mongod server"
               ewarn "before continuing with this ebuild."
               ewarn "Shut down the mongod server and try again."
               die "Terminating ebuild."
       fi
 
        # If the user mongodb already exists we do not neeed
        # to add these users to the system. If the user and
        # group do not exist, we create them.

        getent group mongodb > /dev/null 2&>1

        if [ "$?" -eq "1" ]; then
       	     enewgroup mongodb
        fi

        getent passwd mongodb > /dev/null 2&>1

        if [ "$?" -eq "1" ]; then
             enewuser mongodb -1 -1 /var/lib/${PN} mongodb
        fi

	# Maintainer notes
	#
	# --use-system-tcmalloc is strongly NOT recommended:
	# https://www.mongodb.org/about/contributors/tutorial/build-mongodb-from-source/
	#
	# --c++11 is required by scons instead of auto detection:
	# https://jira.mongodb.org/browse/SERVER-19661

	scons_opts+=" --disable-warnings-as-errors"
	scons_opts+=" --use-system-boost"
	scons_opts+=" --use-system-pcre"
	scons_opts+=" --use-system-snappy"
	scons_opts+=" --use-system-stemmer"
	scons_opts+=" --use-system-yaml"
	scons_opts+=" --use-system-zlib"

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

	if use prefix; then
		scons_opts+=" --cpppath=${EPREFIX}/usr/include"
		scons_opts+=" --libpath=${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}-3.2.0-fix-scons.patch"
}

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() {
	ewarn "!! IMPORTANT !!"
	ewarn " "
	ewarn "Make sure you check your configuration file in /etc/${PN}.conf"
	ewarn "For more information about configuration options, see:"
	ewarn " "
	ewarn "  https://docs.mongodb.org/manual/reference/configuration-options/"
	ewarn " "
	ewarn "If upgrading from an older deployment of ${PN}, Make sure you also follow"
	ewarn "the upgrading process :"
	ewarn "  https://docs.mongodb.org/manual/release-notes/3.2-upgrade/"
	ewarn " "
	ewarn "MongoDB 3.2 uses the WiredTiger storage engine by default for new deployments. For"
	ewarn "existing deployments in the version 3.0 series, MongoDB 3.2 will use the mmapv1 "
	ewarn "storage engine if your existing databases were created with it. If you want to convert"
	ewarn "from the mmapv1 storage engine to WiredTiger, you will need to dump your databases"
	ewarn "with mongodump. Set the storage engine and specify a new dbpath in /etc/${PN}.conf."
	ewarn "Create the dbpath and chmod it so that user mongodb has owner and group rwx permissions."
	ewarn "You may also want to change the name of the logfile that mongod writes to."
	ewarn " "  
	ewarn "  https://docs.mongodb.org/release-notes/3.0-upgrade/#change-storage-engine-to-wiredtiger"
	ewarn " "
	ewarn "After emerging this package, remember to start the mongod server again. If needed, "
	ewarn "restore databases with mongorestore."
}