# Copyright 1999-2012 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/dev-db/postgresql-server/postgresql-server-8.2.23-r1.ebuild,v 1.7 2012/02/19 11:03:07 klausman Exp $

EAPI="4"

WANT_AUTOMAKE="none"
inherit autotools eutils multilib pam prefix versionator

SLOT="$(get_version_component_range 1-2)"

KEYWORDS="alpha amd64 arm hppa ~ia64 ppc ~s390 ~sh ~sparc x86"

DESCRIPTION="PostgreSQL server"
HOMEPAGE="http://www.postgresql.org/"
SRC_URI="mirror://postgresql/source/v${PV}/postgresql-${PV}.tar.bz2
		 http://dev.gentoo.org/~titanofold/postgresql-patches-8.2-r2.tbz2
		 http://dev.gentoo.org/~titanofold/postgresql-initscript-2.1.tbz2"
LICENSE="POSTGRESQL"

S="${WORKDIR}/postgresql-${PV}"

LINGUAS="af cs de en es fa fr hr hu it ko nb pl pt_BR ro ru sk sl sv tr zh_CN zh_TW"
IUSE="doc kernel_linux nls pam perl python selinux tcl xml"

for lingua in ${LINGUAS} ; do
	IUSE+=" linguas_${lingua}"
done

wanted_languages() {
	local enable_langs

	for lingua in ${LINGUAS} ; do
		use linguas_${lingua} && enable_langs+="${lingua} "
	done

	echo -n ${enable_langs}
}

RDEPEND="~dev-db/postgresql-base-${PV}:${SLOT}[pam?,nls=]
		 perl? ( >=dev-lang/perl-5.8 )
		 selinux? ( sec-policy/selinux-postgresql )
		 tcl? ( >=dev-lang/tcl-8 )
		 xml? ( dev-libs/libxml2 dev-libs/libxslt )"

DEPEND="${RDEPEND}
		sys-devel/flex
		xml? ( dev-util/pkgconfig )"

PDEPEND="doc? ( ~dev-db/postgresql-docs-${PV} )"

# Support /var/run or /run for the socket directory
[[ ! -d /run ]] && RUNDIR=/var

pkg_setup() {
	enewgroup postgres 70
	enewuser postgres 70 /bin/bash /var/lib/postgresql postgres
}

src_prepare() {
	epatch "${WORKDIR}/autoconf.patch" \
		"${WORKDIR}/bool.patch" \
		"${WORKDIR}/darwin.patch" \
		"${WORKDIR}/pg_ctl-exit-status.patch" \
		"${WORKDIR}/server.patch" \
		"${WORKDIR}/SuperH.patch"

	eprefixify src/include/pg_config_manual.h

	if use test ; then
		epatch "${WORKDIR}/regress.patch"
		sed -e "s|@SOCKETDIR@|${T}|g" -i src/test/regress/pg_regress.c
		sed -e "s|/no/such/location|${S}/src/test/regress/tmp_check/no/such/location|g" \
			-i src/test/regress/{input,output}/tablespace.source
	else
		echo "all install:" > "${S}/src/test/regress/GNUmakefile"
	fi

	sed -e "s|@RUNDIR@|${RUNDIR}|g" \
		-i src/include/pg_config_manual.h "${WORKDIR}/postgresql.init" || \
		die "RUNDIR sed failed"
	sed -e "s|@SLOT@|${SLOT}|g" \
		-i "${WORKDIR}/postgresql.init" "${WORKDIR}/postgresql.confd" || \
		die "SLOT sed failed"

	eautoconf
}

src_configure() {
	# eval is needed to get along with pg_config quotation of space-rich entities.
	eval econf "$(${EPREFIX%/}/usr/$(get_libdir)/postgresql-${SLOT}/bin/pg_config --configure)" \
		--with-includes="${EPREFIX%/}/usr/include/postgresql-${SLOT}/" \
		$(use_with perl) \
		$(use_with python) \
		$(use_with tcl) \
		"$(has_version ~dev-db/postgresql-base-${PV}[nls] && use_enable nls nls "$(wanted_languages)")"
}

src_compile() {
	local bd
	for bd in . contrib $(use xml && echo contrib/xml2); do
		PATH="${EROOT%/}/usr/$(get_libdir)/postgresql-${SLOT}/bin:${PATH}" \
			emake -C $bd -j1 \
				PGXS=$(${EROOT%/}/usr/$(get_libdir)/postgresql-${SLOT}/bin/pg_config --pgxs) \
				PGXS_IN_SERVER=1 PGXS_WITH_SERVER="${S}/src/backend/postgres" \
				NO_PGXS=0 USE_PGXS=1 docdir=${EROOT%/}/usr/share/doc/${PF}
	done
}

src_install() {
	if use perl ; then
		mv -f "${S}/src/pl/plperl/GNUmakefile" "${S}/src/pl/plperl/GNUmakefile_orig"
		sed -e "s:\$(DESTDIR)\$(plperl_installdir):\$(plperl_installdir):" \
			"${S}/src/pl/plperl/GNUmakefile_orig" > "${S}/src/pl/plperl/GNUmakefile"
	fi

	local bd
	for bd in . contrib $(use xml && echo contrib/xml2) ; do
		PATH="${EROOT%/}/usr/$(get_libdir)/postgresql-${SLOT}/bin:${PATH}" \
			emake install -C $bd -j1 DESTDIR="${D}" \
			PGXS_IN_SERVER=1 PGXS_WITH_SERVER="${S}/src/backend/postgres" \
			PGXS=$(${EROOT%/}/usr/$(get_libdir)/postgresql-${SLOT}/bin/pg_config --pgxs) \
			NO_PGXS=0 USE_PGXS=1 docdir=${EROOT%/}/usr/share/doc/${PF}
	done

	rm -r "${ED}/usr/share/postgresql-${SLOT}/man/man7/" "${ED}/usr/share/doc/${PF}/html"
	rm "${ED}"/usr/share/postgresql-${SLOT}/man/man1/{clusterdb,create{db,lang,user},drop{db,lang,user},ecpg,pg_{config,dump,dumpall,restore},psql,reindexdb,vacuumdb}.1
	docompress /usr/share/postgresql-${SLOT}/man/man1

	dodoc README HISTORY doc/{README.*,TODO,bug.template}

	dodir /etc/eselect/postgresql/slots/${SLOT}
	echo "postgres_ebuilds=\"\${postgres_ebuilds} ${PF}\"" \
		> "${ED}/etc/eselect/postgresql/slots/${SLOT}/server"

	newconfd "${WORKDIR}/postgresql.confd" postgresql-${SLOT}
	newinitd "${WORKDIR}/postgresql.init" postgresql-${SLOT}

	use pam && pamd_mimic system-auth postgresql auth account session

	if use prefix ; then
		keepdir ${RUNDIR}/run/postgresql
		fperms 0770 ${RUNDIR}/run/postgresql
	fi
}

pkg_postinst() {
	postgresql-config update

	elog "Gentoo specific documentation:"
	elog "http://www.gentoo.org/doc/en/postgres-howto.xml"
	elog
	elog "Official documentation:"
	elog "http://www.postgresql.org/docs/${SLOT}/static/index.html"
	elog
	elog "The default location of the Unix-domain socket is:"
	elog "    ${EROOT%/}${RUNDIR}/run/postgresql/"
	elog
	elog "If you have users and/or services that you would like to utilize the"
	elog "socket, you must add them to the 'postgres' system group:"
	elog "    usermod -a -G postgres <user>"
	elog
	elog "Before initializing the database, you may want to edit PG_INITDB_OPTS"
	elog "so that it contains your preferred locale in:"
	elog "    ${EROOT%/}/etc/conf.d/postgresql-${SLOT}"
	elog
	elog "Then, execute the following command to setup the initial database"
	elog "environment:"
	elog "    emerge --config =${CATEGORY}/${PF}"
}

pkg_postrm() {
	postgresql-config update
}

pkg_config() {
	[[ -f ${EROOT%/}/etc/conf.d/postgresql-${SLOT} ]] && source ${EROOT%/}/etc/conf.d/postgresql-${SLOT}
	[[ -z ${PGDATA} ]] && PGDATA="${EROOT%/}/etc/postgresql-${SLOT}/"
	[[ -z ${DATA_DIR} ]] && DATA_DIR="${EROOT%/}/var/lib/postgresql/${SLOT}/data"

	# environment.bz2 may not contain the same locale as the current system
	# locale. Unset and source from the current system locale.
	if [[ -f ${EROOT%/}/etc/env.d/02locale ]] ; then
		unset LANG
		unset LC_CTYPE
		unset LC_NUMERIC
		unset LC_TIME
		unset LC_COLLATE
		unset LC_MONETARY
		unset LC_MESSAGES
		unset LC_ALL
		source ${EROOT%/}/etc/env.d/02locale
		[[ -n ${LANG} ]] && export LANG
		[[ -n ${LC_CTYPE} ]] && export LC_CTYPE
		[[ -n ${LC_NUMERIC} ]] && export LC_NUMERIC
		[[ -n ${LC_TIME} ]] && export LC_TIME
		[[ -n ${LC_COLLATE} ]] && export LC_COLLATE
		[[ -n ${LC_MONETARY} ]] && export LC_MONETARY
		[[ -n ${LC_MESSAGES} ]] && export LC_MESSAGES
		[[ -n ${LC_ALL} ]] && export LC_ALL
	fi

	einfo "You can modify the paths and options passed to initdb by editing:"
	einfo "    ${EROOT%/}/etc/conf.d/postgresql-${SLOT}"
	einfo
	einfo "Information on options that can be passed to initdb are found at:"
	einfo "    http://www.postgresql.org/docs/${SLOT}/static/creating-cluster.html"
	einfo "    http://www.postgresql.org/docs/${SLOT}/static/app-initdb.html"
	einfo
	einfo "PG_INITDB_OPTS is currently set to:"
	if [[ -z "${PG_INITDB_OPTS}" ]] ; then
		einfo "    (none)"
	else
		einfo "    ${PG_INITDB_OPTS}"
	fi
	einfo
	einfo "Configuration files will be installed to:"
	einfo "    ${PGDATA}"
	einfo
	einfo "The database cluster will be created in:"
	einfo "    ${DATA_DIR}"
	einfo
	while [[ $correct != "true" ]] ; do
		einfo "Are you ready to continue? (y/n)"
		read answer
		if [[ $answer =~ ^[Yy]([Ee][Ss])?$ ]] ; then
			correct="true"
		elif [[ $answer =~ ^[Nn]([Oo])?$ ]] ; then
			die "Aborting initialization."
		else
			echo "Answer not recognized"
		fi
	done

	if [ -n "$(ls -A ${DATA_DIR} 2> /dev/null)" ] ; then
		eerror "The given directory, '${DATA_DIR}', is not empty."
		eerror "Modify DATA_DIR to point to an empty directory."
		die "${DATA_DIR} is not empty."
	fi

	[[ -z ${PG_MAX_CONNECTIONS} ]] && PG_MAX_CONNECTIONS=128
	einfo "Checking system parameters..."

	if ! use kernel_linux ; then
		einfo "Skipped."
		einfo "Tests not supported on this OS (yet)"
	else
		if [[ -z ${SKIP_SYSTEM_TESTS} ]] ; then
			ebegin "Checking whether your system supports at least ${PG_MAX_CONNECTIONS} connections"

			local SEMMSL=$(sysctl -n kernel.sem | cut -f1)
			local SEMMNS=$(sysctl -n kernel.sem | cut -f2)
			local SEMMNI=$(sysctl -n kernel.sem | cut -f4)
			local SHMMAX=$(sysctl -n kernel.shmmax)

			local SEMMSL_MIN=17
			local SEMMNS_MIN=$(( ( ${PG_MAX_CONNECTIONS}/16 ) * 17 ))
			local SEMMNI_MIN=$(( ( ${PG_MAX_CONNECTIONS}+15 ) / 16 ))
			local SHMMAX_MIN=$(( 500000 + ( 30600 * ${PG_MAX_CONNECTIONS} ) ))

			for p in SEMMSL SEMMNS SEMMNI SHMMAX ; do
				if [[ $(eval echo \$$p) -lt $(eval echo \$${p}_MIN) ]] ; then
					eerror "The value for ${p} $(eval echo \$$p) is below the"
					eerror "recommended value $(eval echo \$${p}_MIN)"
					eerror "You have now several options:"
					eerror "  - Change the mentioned system parameter"
					eerror "  - Lower the number of max.connections by setting PG_MAX_CONNECTIONS to"
					eerror "    a value lower than ${PG_MAX_CONNECTIONS}"
					eerror "  - Set SKIP_SYSTEM_TESTS in case you want to ignore this test"
					eerror "    completely"
					eerror "More information can be found here:"
					eerror "  http://www.postgresql.org/docs/${SLOT}/static/kernel-resources.html"
					die "System test failed."
				fi
			done
			eend
		else
			ewarn "SKIP_SYSTEM_TESTS set, so skipping."
		fi
	fi

	if [[ ${EUID} == 0 ]] ; then
		einfo "Creating the data directory ..."
		mkdir -p "${DATA_DIR}"
		chown -Rf postgres:postgres "${DATA_DIR}"
		chmod 0700 "${DATA_DIR}"
	fi

	einfo "Initializing the database ..."
	if [[ ${EUID} == 0 ]] ; then
		su postgres -c "${EROOT%/}/usr/$(get_libdir)/postgresql-${SLOT}/bin/initdb -D \"${DATA_DIR}\" ${PG_INITDB_OPTS}"
	else
		"${EROOT%/}"/usr/$(get_libdir)/postgresql-${SLOT}/bin/initdb -U postgres -D "${DATA_DIR}" ${PG_INITDB_OPTS}
	fi
	mv "${DATA_DIR%/}"/*.conf "${PGDATA}"

	einfo "The autovacuum function, which was in contrib, has been moved to the"
	einfo "main PostgreSQL functions starting with 8.1."
	einfo "You can enable it in the cluster's:"
	einfo "    ${PGDATA%/}/postgresql.conf"
	einfo
	einfo "The PostgreSQL server, by default, will log events to:"
	einfo "    ${DATA_DIR%/}/postmaster.log"
	einfo
	if use prefix ; then
		einfo "The location of the configuration files have moved to:"
		einfo "    ${PGDATA}"
		einfo
		einfo "To start the server:"
		einfo "    pg_ctl start -D ${DATA_DIR} -o '-D ${PGDATA} --data-directory=${DATA_DIR}'"
		einfo
		einfo "To stop:"
		einfo "    pg_ctl stop -D ${DATA_DIR}"
		einfo
		einfo "Or move the configuration files back:"
		einfo "    mv ${PGDATA}*.conf ${DATA_DIR}"
	else
		einfo "You should use the '${EROOT%/}/etc/init.d/postgresql-${SLOT}' script to run PostgreSQL"
		einfo "instead of 'pg_ctl'."
	fi
}

src_test() {
	einfo ">>> Test phase [check]: ${CATEGORY}/${PF}"

	if [[ ${UID} != 0 ]] ; then
		PATH="${EROOT%/}/usr/$(get_libdir)/postgresql-${SLOT}/bin/:${PATH}" \
			emake check \
			PGXS=$("${EROOT%/}"/usr/$(get_libdir)/postgresql-${SLOT}/bin/pg_config --pgxs) \
			NO_PGXS=0 USE_PGXS=1 SLOT="${SLOT}"

		einfo "If you think other tests besides the regression tests are necessary,"
		einfo "please submit a bug including a patch for this ebuild to enable them."
	else
		ewarn "Tests cannot be run as root. Skipping."
		ewarn "HINT: FEATURES=\"userpriv\""
	fi
}