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#!/usr/bin/env bash
# Copyright (c) 2021 Egor Tensin <egor@tensin.name>
# This file is part of the "cgitize" project.
# For details, see https://github.com/egor-tensin/cgitize.
# Distributed under the MIT License.
set -o errexit -o nounset -o pipefail
shopt -s inherit_errexit lastpipe
schedule_to_cron() {
local schedule
for schedule; do
case "$schedule" in
minutely) echo '* * * * *' ;;
15min) echo '*/15 * * * *' ;;
hourly) echo '0 * * * *' ;;
daily) echo '0 0 * * *' ;;
weekly) echo '0 0 * * 1' ;;
monthly) echo '0 0 1 * *' ;;
*)
echo "$schedule"
;;
esac
done
}
setup_cron_task() {
local schedule
schedule="${SCHEDULE:-once}"
if [ "$schedule" = once ]; then
exec "$@"
fi
schedule="$( schedule_to_cron "$schedule" )"
if [ -n "${SCHEDULE_ON_START:+x}" ]; then
# Run the task once when the container is started.
"$@"
fi
local crontab
crontab="$schedule"
crontab="$crontab$( printf ' %q' "$@" )"
echo "$crontab" | crontab -
exec crond -f
}
main() {
setup_cron_task "$@"
}
main "$@"
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