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authorAaron W. Swenson <titanofold@gentoo.org>2017-09-03 10:39:15 -0400
committerAaron W. Swenson <titanofold@gentoo.org>2017-09-03 10:39:15 -0400
commitd2c3a3108e4cfb57a9da8964bf73b4275ad5a5d6 (patch)
tree19ba0737b41dc3f2023f7b7b7fbfd76f0c37c5ed /postgres.eclass
parentclean up (diff)
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Diffstat (limited to 'postgres.eclass')
-rw-r--r--postgres.eclass177
1 files changed, 139 insertions, 38 deletions
diff --git a/postgres.eclass b/postgres.eclass
index 77851c1..13483a9 100644
--- a/postgres.eclass
+++ b/postgres.eclass
@@ -1,58 +1,159 @@
-# Copyright 1999-2013 Gentoo Foundation
+# Copyright 1999-2017 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
-# $Header: $
+
+inherit user
+EXPORT_FUNCTIONS pkg_setup
# @ECLASS: postgres.eclass
# @MAINTAINER:
-# Aaron W. Swenson <titanofold@gentoo.org>
-# @BLURB: Functions to aid PostgreSQL-related packages
+# PostgreSQL <pgsql-bugs@gentoo.org>
+# @AUTHOR: Aaron W. Swenson <titanofold@gentoo.org>
+# @BLURB: An eclass for PostgreSQL-related packages
# @DESCRIPTION:
-# The postgres eclass is a suite that enable ebuilds to build against
-# multiple slots, properly add a new daemon user, and query
-# PostgreSQL-related information from the system.
+# This eclass provides common utility functions that many
+# PostgreSQL-related packages perform, such as checking that the
+# currently selected PostgreSQL slot is within a range, adding a system
+# user to the postgres system group, and generating dependencies.
+
+
+case ${EAPI:-0} in
+ 5|6) ;;
+ *) die "Unsupported EAPI=${EAPI} (unknown) for ${ECLASS}" ;;
+esac
-inherit user
-# @FUNCTION: postgres_depend
-# @USAGE: postgres_depend [USE,flags] [server] [server,USE,flags]
+# @ECLASS-VARIABLE: POSTGRES_COMPAT
+# @DEFAULT_UNSET
# @DESCRIPTION:
-# Called after DEPEND is declared. Takes up to two optional arguments. The 'server'
-postgres_depend() {
- if [[ -n ${POSTGRES_ONLY} ]] ; then
- DEPEND+=" dev-db/postgresql-base:${POSTGRES_ONLY}[${BASE_FLAGS}]"
- elif [[ -n ${POSTGRES_MIN} ]]
- if [[ -n ${POSTGRES_MAX} ]] ; then
+# A Bash array containing a list of compatible PostgreSQL slots as
+# defined by the developer. If declared, must be declared before
+# inheriting this eclass. Example: POSTGRES_COMPAT=( 9.4 9.{5,6} )
- else
- #blarg
- fi
- elif [[ -n ${POSGRES_MAX} ]] ; then
- #blah
+# @ECLASS-VARIABLE: POSTGRES_USEDEP
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# Add the 2-Style and/or 4-Style use dependencies without brackets to be used
+# for POSTGRES_DEP. If declared, must be done before inheriting this eclass.
+
+# @ECLASS-VARIABLE: POSTGRES_DEP
+# @DESCRIPTION:
+# An automatically generated dependency string suitable for use in
+# DEPEND and RDEPEND declarations.
+
+# @ECLASS-VARIABLE: POSTGRES_REQ_USE
+# @DESCRIPTION:
+# An automatically generated REQUIRED_USE-compatible string built upon
+# POSTGRES_COMPAT. REQUIRED_USE="... ${POSTGRES_REQ_USE}" is only
+# required if the package must build against one of the PostgreSQL slots
+# declared in POSTGRES_COMPAT.
+
+if declare -p POSTGRES_COMPAT &> /dev/null ; then
+ # Reverse sort the given POSTGRES_COMPAT so that the most recent
+ # slot is preferred over an older slot.
+ # -- do we care if dependencies are deterministic by USE flags?
+ readarray -t POSTGRES_COMPAT < <(printf '%s\n' "${POSTGRES_COMPAT[@]}" | sort -nr)
+
+ POSTGRES_DEP=""
+ POSTGRES_REQ_USE=" || ("
+ for slot in "${POSTGRES_COMPAT[@]}" ; do
+ POSTGRES_DEP+=" postgres_targets_postgres${slot/\./_}? ( dev-db/postgresql:${slot}="
+ declare -p POSTGRES_USEDEP &>/dev/null && \
+ POSTGRES_DEP+="[${POSTGRES_USEDEP}]"
+ POSTGRES_DEP+=" )"
+
+ IUSE+=" postgres_targets_postgres${slot/\./_}"
+ POSTGRES_REQ_USE+=" postgres_targets_postgres${slot/\./_}"
+ done
+ POSTGRES_REQ_USE+=" )"
+else
+ POSTGRES_DEP="dev-db/postgresql:="
+ declare -p POSTGRES_USEDEP &>/dev/null && \
+ POSTGRES_DEP+="[${POSTGRES_USEDEP}]"
+fi
+
+
+# @FUNCTION: postgres_check_slot
+# @DESCRIPTION:
+# Verify that the currently selected PostgreSQL slot is set to one of
+# the slots defined in POSTGRES_COMPAT. Automatically dies unless a
+# POSTGRES_COMPAT slot is selected. Should be called in pkg_pretend().
+postgres_check_slot() {
+ if ! declare -p POSTGRES_COMPAT &>/dev/null; then
+ die 'POSTGRES_COMPAT not declared.'
+ fi
+
+ # Don't die because we can't run postgresql-config during pretend.
+ [[ "$EBUILD_PHASE" = "pretend" && -z "$(which postgresql-config 2> /dev/null)" ]] \
+ && return 0
+
+ if has $(postgresql-config show 2> /dev/null) "${POSTGRES_COMPAT[@]}"; then
+ return 0
else
- [[POSTGRES_MAX]]
- [[POSTGRES_MIN]]
- [[POSTGRES_ONLY]]
+ eerror "PostgreSQL slot must be set to one of: "
+ eerror " ${POSTGRES_COMPAT[@]}"
+ die "Incompatible PostgreSQL slot eselected"
fi
}
-length=$(expr length ${POSTGRES_MAX})
-
-pgsql_pkg_setup() {
+# @FUNCTION: postgres_new_user
+# @DESCRIPTION:
+# Creates the "postgres" system group and user -- which is separate from
+# the database user -- in addition to the developer defined user. Takes
+# the same arguments as "enewuser".
+postgres_new_user() {
enewgroup postgres 70
enewuser postgres 70 /bin/bash /var/lib/postgresql postgres
+
+ if [[ $# -gt 0 ]] ; then
+ if [[ "$1" = "postgres" ]] ; then
+ ewarn "Username 'postgres' implied, skipping"
+ else
+ local groups=$5
+ [[ -n "${groups}" ]] && groups+=",postgres" || groups="postgres"
+ enewuser "$1" "${2:--1}" "${3:--1}" "${4:--1}" "${groups}"
+ fi
+ fi
}
-# @FUNCTION: pgsql_enewuser
-# @USAGE: <user> [uid] [shell] [homedir]
+# @FUNCTION: postgres_pkg_setup
+# @USAGE: postgres_pkg_setup
# @DESCRIPTION:
-# Same as enewuser, in fact it uses enewuser, you are not required to
-# understand how to properly add a user to the system. The only required
-# parameter is the username. Default uid is (pass -1 for this) next
-# available, default shell is /bin/false, default homedir is /dev/null,
-# and is assigned to the postgres group.
-pgsql_new_user() {
- local user=$1 uid=$2 shell=$3 home=$4
+# Initialize environment variable(s) according to the best
+# installed version of PostgreSQL that is also in POSTGRES_COMPAT. This
+# is required if pkg_setup() is declared in the ebuild.
+# Exports PG_SLOT, PG_CONFIG, and PKG_CONFIG_PATH.
+postgres_pkg_setup() {
+ debug-print-function ${FUNCNAME} "${@}"
+
+ local compat_slot
+ local best_slot
+ for compat_slot in "${POSTGRES_COMPAT[@]}"; do
+ if use "postgres_targets_postgres${compat_slot/\./_}"; then
+ best_slot="${compat_slot}"
+ break
+ fi
+ done
+
+ if [[ -z "${best_slot}" ]]; then
+ local flags f
+ for f in "${POSTGRES_COMPAT[@]}"; do
+ flags+=" postgres${f/./_}"
+ done
+
+ eerror "POSTGRES_TARGETS must contain at least one of:"
+ eerror " ${flags}"
+ die "No suitable POSTGRES_TARGETS enabled."
+ fi
+
+ export PG_SLOT=${best_slot}
+ export PG_CONFIG=$(which pg_config${best_slot//./})
+
+ local pg_pkg_config_path="$(${PG_CONFIG} --libdir)/pkgconfig"
+ if [[ -n "${PKG_CONFIG_PATH}" ]]; then
+ export PKG_CONFIG_PATH="${pg_pkg_config_path}:${PKG_CONFIG_PATH}"
+ else
+ export PKG_CONFIG_PATH="${pg_pkg_config_path}"
+ fi
- pgsql_pkg_setup
- enewuser $1 $2 $3 $4 postgres
+ elog "PostgreSQL Target: ${best_slot}"
}