cdist configuration management Latest manual: https://www.cdi.st/manual/latest/ Home page: https://www.cdi.st
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#!/bin/sh -e
# -*- mode: sh; indent-tabs-mode: t -*-
#
# 2019-2021 Dennis Camera (dennis.camera at ssrq-sds-fds.ch)
# 2020 Beni Ruef (bernhard.ruef at ssrq-sds-fds.ch)
#
# This file is part of cdist.
#
# cdist is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# cdist is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with cdist. If not, see <http://www.gnu.org/licenses/>.
#
state_is=$(cat "${__object:?}/explorer/state")
state_should=$(cat "${__object:?}/parameter/state")
postgres_user=$(cat "${__object:?}/explorer/postgres_user")
conf_name=${__object_id:?}
if test "${state_is}" = "${state_should}"
then
exit 0
fi
quote() {
for _arg
do
shift
if test -n "$(printf '%s' "${_arg}" | tr -d -c '\t\n \042-\047\050-\052\073-\077\133\\`|~' | tr -c '' '.')"
then
# needs quoting
set -- "$@" "'$(printf '%s' "${_arg}" | sed -e "s/'/'\\\\''/g")'"
else
set -- "$@" "${_arg}"
fi
done
unset _arg
# NOTE: Use printf because POSIX echo interprets escape sequences
printf '%s' "$*"
}
psql_cmd() {
printf 'su - %s -c %s\n' "$(quote "${postgres_user}")" "$(quote "$(quote psql "$@")")"
}
case ${state_should}
in
(present)
test -s "${__object:?}/parameter/value" || {
echo 'Missing required parameter --value' >&2
exit 1
}
cat <<-EOF
exec 3< "\${__object:?}/parameter/value"
$(psql_cmd postgres -tAwq -o /dev/null -v ON_ERROR_STOP=on) <<'SQL'
\\set conf_value \`cat <&3\`
ALTER SYSTEM SET ${conf_name} = :'conf_value';
SELECT pg_reload_conf();
SQL
exec 3<&-
EOF
;;
(absent)
psql_cmd postgres -qwc "ALTER SYSTEM SET ${conf_name} TO DEFAULT"
;;
(*)
printf 'Invalid --state: %s\n' "${state_should}" >&2
printf 'Only "present" and "absent" are acceptable.\n' >&2
exit 1
;;
esac
# Restart PostgreSQL server if required to apply new configuration value
cat <<EOF
if test 't' = "\$($(psql_cmd postgres -twAc "SELECT pending_restart FROM pg_settings WHERE lower(name) = lower('${conf_name}')"))"
then
$(
init=$(cat "${__global:?}/explorer/init")
case ${init}
in
(systemd)
echo 'systemctl restart postgresql.service'
;;
(*openrc*)
echo 'rc-service postgresql restart'
;;
(sysvinit)
echo '/etc/init.d/postgresql restart'
;;
(init)
case $(cat "${__global:?}/explorer/kernel_name")
in
(FreeBSD)
echo '/usr/local/etc/rc.d/postgresql restart'
;;
(OpenBSD|NetBSD)
echo '/etc/rc.d/postgresql restart'
;;
(*)
echo "Unsupported operating system. Don't know how to restart services." >&2
exit 1
esac
;;
(*)
printf "Don't know how to restart services with your init (%s)\n" "${init}" >&2
exit 1
esac
)
fi
EOF