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# Copyright 1999-2011 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Id: $
inherit config multilib
DESCRIPTION="Manage active PostgreSQL client applications and libraries"
MAINTAINER="pgsql-bugs@gentoo.org"
SVN_DATE='$Date: $'
VERSION="1.0.8"
# Global Data
B_PATH="${EROOT%/}/usr"
E_PATH="${EROOT%/}/etc/eselect/postgresql"
ENV_FILE="${EROOT%/}/etc/env.d/50postgresql"
active_slot() {
if [[ -r ${E_PATH}/active && -n ${E_PATH}/active ]] ; then
echo $( <"${E_PATH}"/active )
else
echo "(none)"
fi
}
lib_dir() {
local lib_list=$(list_libdirs)
if [[ ${lib_list} =~ .*lib64.* && \
-n $(ls -d ${B_PATH}/lib64/postgresql-*/lib64 2> /dev/null) ]] ; then
echo "lib64"
elif [[ ${lib_list} =~ .*lib32.* && \
-n $(ls -d ${B_PATH}/lib32/postgresql-*/lib32 2> /dev/null) ]] ; then
echo "lib32"
else
echo "lib"
fi
}
### Linker Function ###
# Takes four arguments:
# - Full source path (e.g. /usr/lib/postgresql-9.0/lib)
# - Pattern to search for
# - Full target directory path (e.g. /usr/bin)
# - Suffix (Optional) (e.g 84 to make /usr/bin/psql84)
linker() {
local source_dir=$1
local pattern=$2
local target_dir=$3
local suffix=$4
local link_source
local findings
# Prevent passed patterns from being globbed
set -f
findings=$(find "${source_dir}" -maxdepth 1 -mindepth 1 ${pattern})
set +f
for link_source in ${findings} ; do
local link_target="${target_dir%/}/$(basename ${link_source})${suffix}"
# For good measure, remove target before creating the symlink
[[ -h ${link_target} ]] && rm -f "${link_target}"
[[ -e ${link_target} ]] && \
die -q "The target '${link_target}' still exists and could not be removed!"
ln -s "${link_source}" "${link_target}" || die -q "Unable to create link!"
echo "${link_target}" >> "${E_PATH}"/active.links${suffix}
done
}
### Unlinker Function ###
# Takes one argument:
# - Full path to active links file (e.g. /etc/eselect/postgresql/active.links)
unlinker() {
local active_link_file=$1
if [[ -r ${active_link_file} ]] ; then
local active_links=($(<"${active_link_file}"))
for (( i=0; $i < ${#active_links[@]}; i++ )) ; do
[[ -h ${active_links[$i]} ]] && rm -f "${active_links[$i]}"
[[ -e ${active_links[$i]} ]] && \
die -q "The target '${active_links[$i]}' still exists and could not be removed!"
done
rm -f "${active_link_file}"
fi
}
### Get Slots Function ###
# Find all available slots in the preferred lib_dir() and return them.
get_slots() {
echo $(find "${B_PATH}/$(lib_dir)" -maxdepth 1 -type d \
-regex '.*postgresql-[0-9][0-9]*\.[0-9][0-9]*' | \
sed -re 's#.*([0-9]+\.[0-9]+)$#\1#' | sort -n)
}
### List Action ###
describe_list() {
echo "List available PostgreSQL slots."
}
do_list() {
write_list_start "Available PostgreSQL Slots"
if $(is_output_mode brief) ; then
echo $(get_slots)
else
local slot
for slot in $(get_slots) ; do
local postgres_ebuilds=""
local src
for src in "${E_PATH}"/slots/${slot}/{server,service,base,docs} ; do
[[ -r ${src} ]] && source "${src}"
done
case "${slot}" in
"$(active_slot)" ) write_kv_list_entry \
"$(highlight_marker ${slot})" "${postgres_ebuilds//postgresql-/}";;
* ) write_kv_list_entry \
"${slot}" "${postgres_ebuilds//postgresql-/}";;
esac
done
[[ -z ${postgres_ebuilds} ]] && write_warning_msg "No slots available."
fi
}
### Show Action ###
describe_show() {
echo "Show which slot is currently active."
}
do_show() {
echo $(active_slot)
}
### Show Service Action ###
# Here for backwards compatibility with ebuilds
describe_show-service() {
echo "Deprecated. For ebuild use; returns no useful information."
}
do_show-service() {
echo 1
}
### Set Action ###
describe_set() {
echo "Create symbolic links for PostgreSQL libraries and applications."
}
do_set() {
local SLOT=$1
if [[ ! -d ${B_PATH}/$(lib_dir)/postgresql-${SLOT} ]] ; then
die -q "Not a valid slot."
fi
echo "Setting ${SLOT} as the default installation..."
# Remove the active links to start a fresh list
echo -ne "\tRemoving old links..."
unlinker ${E_PATH}/active.links
echo "done."
echo -ne "\tGenerating new links..."
# Sources and targets for header files
local sources=(
"${B_PATH}"/include/postgresql-${SLOT}
"${B_PATH}"/include/postgresql-${SLOT}/libpq-fe.h
"${B_PATH}"/include/postgresql-${SLOT}/pg_config_manual.h
"${B_PATH}"/include/postgresql-${SLOT}/libpq
"${B_PATH}"/include/postgresql-${SLOT}/postgres_ext.h
)
local targets=(
"${B_PATH}"/include/postgresql
"${B_PATH}"/include/libpq-fe.h
"${B_PATH}"/include/pg_config_manual.h
"${B_PATH}"/include/libpq
"${B_PATH}"/include/postgres_ext.h
)
# The linker function cannot accomadate this special purpose.
local i
for (( i=0; $i < ${#sources[@]}; i++ )) ; do
# Remove target before creating the symlink
[[ -h ${targets[$i]} ]] && rm -f "${targets[$i]}"
# Check if link_target still exists
[[ -e ${targets[$i]} ]] && \
die -q "The target '${targets[$i]}' exists and could not be removed!"
ln -s "${sources[$i]}" "${targets[$i]}" || die -q "Unable to create link!"
echo "${targets[$i]}" >> "${E_PATH}"/active.links
done
# Link modules to /usr/lib{,32,64}/
local x
for x in $(list_libdirs) ; do
if [[ -d ${B_PATH}/${x}/postgresql-${SLOT}/${x} ]] ; then
# 'linker' function doesn't work for linking directories.
# Default lib path
ln -s "${B_PATH}/${x}/postgresql-${SLOT}/${x}" "${B_PATH}/${x}/postgresql"
echo "${B_PATH}/${x}/postgresql" >> "${E_PATH}"/active.links
# Linker works for files
linker "${B_PATH}/${x}/postgresql-${SLOT}/${x}" \
'-name lib*' "${B_PATH}/${x}"
fi
done
# Link binaries to /usr/bin/
linker "${B_PATH}/$(lib_dir)/postgresql-${SLOT}/bin" \
"-xtype f" "${B_PATH}/bin"
# Default share path
ln -s "${B_PATH}/share/postgresql-${SLOT}" "${B_PATH}/share/postgresql"
echo "${B_PATH}/share/postgresql" >> "${E_PATH}/active.links"
echo ${SLOT} > "${E_PATH}/active"
echo "done."
echo "Setting ${SLOT} as default was successful!"
}
### Unset Action ###
describe_unset() {
echo "Remove symbolic links."
}
do_unset() {
local SLOT=$1
if [[ ${SLOT} = $(active_slot) ]] ; then
echo -n "Unsetting ${SLOT} as the default installation..."
unlinker "${E_PATH}/active.links"
rm -f "${E_PATH}/active"
echo "done."
echo "Setting a new slot as the default."
do_update
else
echo "Inactive slot selected. No work to do."
fi
}
### Reset Action ###
describe_reset() {
echo "Recreate symbolic links for currently active slot."
}
do_reset() {
local SLOT=$(active_slot)
[[ ${SLOT} = "(none)" ]] && die -q "No active slot to reset."
do_unset ${SLOT}
do_set ${SLOT}
}
### Update Action ###
describe_update() {
echo "Refreshes all symbolic links managed by this module"
}
do_update() {
local slot=$(active_slot)
# Check for files managed by postgresql.eselect before 1.0
if [[ -h ${E_PATH}/active ]] ; then
slot="$(basename $(canonicalise ${E_PATH}/active)))"
rm -f "${E_PATH}/active"
fi
# Remove service file outright.
[[ -h ${E_PATH}/service ]] && rm -f "${E_PATH}/service"
local slots=($(get_slots))
local index=${#slots[@]}
# In case all slots have been unmerged
if [[ ${index} -eq 0 ]] ; then
write_warning_msg "No slots found!"
write_warning_msg "Removing files (Control-C to abort) in..."
local i=6
while [[ $[i--] -gt 0 ]] ; do
echo -n " $i"
sleep 1
done
local sym_links
for sym_links in "${E_PATH}"/active.links* ; do
unlinker "${sym_links}"
done
rm -f "${E_PATH}/active"
rm -f "${ENV_FILE}"
do_action env update &> /dev/null
echo "Done!"
return 0
fi
# Reset, otherwise set the highest slot available.
if [[ ${slots[@]} =~ ${slot} ]] ; then
do_set ${slot}
else
# best_version doesn't work here as pkg_postrm runs before the world
# file is updated, thereby returning a false positive.
do_set ${slots[$index-1]}
fi
echo -en "\nCleaning out old links before refreshing..."
local sym_links
for sym_links in "${E_PATH}"/active.links?* ; do
unlinker "${sym_links}"
done
echo "done."
# Update paths to libs and docs
local ldpath
local x
for x in $(list_libdirs) ; do
[[ -h ${B_PATH}/${x}/postgresql ]] && \
ldpath+="${B_PATH}/${x}/postgresql:"
done
ldpath="${ldpath%:}"
local manpath="${B_PATH}/share/postgresql/man/"
while [[ $[--index] -gt -1 ]] ; do
local curslot="${slots[$index]}"
echo -n "Refreshing symbolic links for ${curslot} applications (like "
echo -n "/usr/bin/psql${curslot//.})..."
for x in $(list_libdirs) ; do
local lib_path="${B_PATH}/${x}/postgresql-${curslot}/${x}/"
[[ -d ${lib_path} ]] && ldpath+=":${lib_path}"
done
local tmp_manpath="${B_PATH}/share/postgresql-${curslot}/man/"
[[ -d ${tmp_manpath} ]] && manpath+=":${tmp_manpath}"
linker "${B_PATH}/$(lib_dir)/postgresql-${curslot}/bin" \
"-xtype f" "${B_PATH}/bin" "${curslot//.}"
echo "done."
done
# Remove environment files that have been generated by the ebuilds
rm -f "${ENV_FILE}"-*
store_config "${ENV_FILE}" LDPATH "${ldpath}"
store_config "${ENV_FILE}" MANPATH "${manpath}"
do_action env update &> /dev/null
}
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