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#!/bin/sh
#
# Send notification in response to a given zevent.
#
# This is a generic script than can be symlinked to a file in the
# enabled-zedlets directory to have a notification sent when a particular
# class of zevents occurs. The symlink filename must begin with the zevent
# (sub)class string (e.g., "probe_failure-notify.sh" for the "probe_failure"
# subclass). Refer to the zed(8) manpage for details.
#
# Only one notification per ZED_NOTIFY_INTERVAL_SECS will be sent for a given
# class/pool combination. This protects against spamming the recipient
# should multiple events occur together in time for the same pool.
#
# Exit codes:
# 0: notification sent
# 1: notification failed
# 2: notification not configured
# 3: notification suppressed
[ -f "${ZED_ZEDLET_DIR}/zed.rc" ] && . "${ZED_ZEDLET_DIR}/zed.rc"
. "${ZED_ZEDLET_DIR}/zed-functions.sh"
# Rate-limit the notification based in part on the filename.
#
rate_limit_tag="${ZEVENT_POOL};${ZEVENT_SUBCLASS};$(basename -- "$0")"
rate_limit_interval="${ZED_NOTIFY_INTERVAL_SECS}"
zed_rate_limit "${rate_limit_tag}" "${rate_limit_interval}" || exit 3
umask 077
pool_str="${ZEVENT_POOL:+" for ${ZEVENT_POOL}"}"
host_str=" on $(hostname)"
note_subject="ZFS ${ZEVENT_SUBCLASS} event${pool_str}${host_str}"
note_pathname="${TMPDIR:="/tmp"}/$(basename -- "$0").${ZEVENT_EID}.$$"
{
echo "ZFS has posted the following event:"
echo
echo " eid: ${ZEVENT_EID}"
echo " class: ${ZEVENT_SUBCLASS}"
echo " host: $(hostname)"
echo " time: ${ZEVENT_TIME_STRING}"
[ -n "${ZEVENT_VDEV_TYPE}" ] && echo " vtype: ${ZEVENT_VDEV_TYPE}"
[ -n "${ZEVENT_VDEV_PATH}" ] && echo " vpath: ${ZEVENT_VDEV_PATH}"
[ -n "${ZEVENT_VDEV_GUID}" ] && echo " vguid: ${ZEVENT_VDEV_GUID}"
[ -n "${ZEVENT_POOL}" ] && [ -x "${ZPOOL}" ] \
&& "${ZPOOL}" status "${ZEVENT_POOL}"
} > "${note_pathname}"
zed_notify "${note_subject}" "${note_pathname}"; rv=$?
rm -f "${note_pathname}"
exit "${rv}"
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