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