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#!/usr/bin/env bash
# Copyright (c) 2021 Egor Tensin <Egor.Tensin@gmail.com>
# 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
readonly base_dir=/usr/src
schedule_to_cron() {
local schedule
for schedule; do
case "$schedule" in
15min) echo '*/15 * * * *' ;;
hourly) echo '0 * * * *' ;;
daily) echo '0 0 * * *' ;;
weekly) echo '0 0 * * 1' ;;
monthly) echo '0 0 1 * *' ;;
*)
echo "$schedule"
;;
esac
done
}
make_task_script() {
echo "#!/bin/bash
cd -- "$base_dir" &&$( printf -- ' %q' "$@" )"
}
setup_cron_task() {
local schedule
schedule="${SCHEDULE:-once}"
if [ "$schedule" = once ]; then
exec "$@"
fi
schedule="$( schedule_to_cron "$schedule" )"
make_task_script "$@" > /task.sh
chmod +x /task.sh
# Run the task once when the container is started, regardless of schedule.
/task.sh
local crontab
crontab="$schedule /task.sh
# This is the new crontab."
echo "$crontab" | crontab -
exec crond -f
}
main() {
setup_cron_task "$@"
}
main "$@"
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