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#!/bin/bash
##
## Wrapper Script for Cronscripts
## Log all errors and stdout and sends only once a day an email
##
## (c) Alexander Sulfrian, Sep 2008
##
echo_error() {
echo "$@" 1>&2
}
create_and_check_log() {
if [ ! -e "${1}" ]
then
touch "${1}"
fi
if [ ! -w "${1}" ]
then
echo_error "Unable to open log: ${1}"
exit 2
fi
}
if [ -z "${1}" -o ! -x "${1}" ]
then
echo_error
echo_error " Usage:"
echo_error " ${0} filename [parameter]"
echo_error
echo_error " The filename have to exists an have to be executable."
echo_error
exit 1
fi
CRON_SCRIPT="${1}"
CRON_SCRIPT_BASENAME="$(basename ${CRON_SCRIPT} ".sh")"
CRON_SCRIPT_LOGNAME="${CRON_SCRIPT_BASENAME#sync-}"
ERROR_LOG="/var/log/sync/${CRON_SCRIPT_LOGNAME}_error.log"
LOG="/var/log/sync/${CRON_SCRIPT_LOGNAME}.log"
LOCKFILE="/var/lock/${CRON_SCRIPT_LOGNAME}"
create_and_check_log "${ERROR_LOG}"
create_and_check_log "${LOG}"
ERROR_TMP=$(mktemp -t "${CRON_SCRIPT_BASENAME}.XXXXXXXX")
# parameter eins nach vorne shiften
# damit der cronscript dateiname nicht mehr enthalten ist
shift 1
# locking, cron script should not executed while the last
# instance is running
lockfile-create "$LOCKFILE" || exit 1
lockfile-touch "$LOCKFILE" &
TOUCH="$!"
# log header
LOG_HEADER="-------------------- $(date) --------------------"
echo "${LOG_HEADER}" >> "${LOG}"
# cron ausführen und output auffangen
${CRON_SCRIPT} $@ >> "${LOG}" 2> "${ERROR_TMP}"
if [ $(grep -v "^\s*$" "${ERROR_TMP}" | wc -l) -gt 0 ]
then
if [ "$(date -r${ERROR_LOG} +%F)" != "$(date +%F)" ]
then
cat "${ERROR_LOG}"
echo "${LOG_HEADER}"
cat "${ERROR_TMP}"
echo -n > "${ERROR_LOG}"
else
echo ${LOG_HEADER} >> "${ERROR_LOG}"
cat "${ERROR_TMP}" >> "${ERROR_LOG}"
fi
fi
rm "${ERROR_TMP}"
# cleanup lockfile
kill "$TOUCH"
lockfile-remove "$LOCKFILE"
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