59 lines
1.7 KiB
Bash
59 lines
1.7 KiB
Bash
# waitterm
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# wait TERM/INT signal.
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# see: http://veithen.github.io/2014/11/16/sigterm-propagation.html
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waitterm() {
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local PID
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# any process to block
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tail -f /dev/null &
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PID="$!"
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# setup trap, could do nothing, or just kill the blocker
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trap "kill -TERM ${PID}" TERM INT
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# wait for signal, ignore wait exit code
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wait "${PID}" || true
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# clear trap
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trap - TERM INT
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# wait blocker, ignore blocker exit code
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wait "${PID}" 2>/dev/null || true
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}
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# waittermpid "${PIDFILE}".
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# monitor process by pidfile && wait TERM/INT signal.
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# if the process disappeared, return 1, means exit with ERROR.
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# if TERM or INT signal received, return 0, means OK to exit.
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waittermpid() {
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local PIDFILE PID do_run error
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PIDFILE="${1?}"
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do_run=true
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error=0
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trap "do_run=false" TERM INT
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while "${do_run}" ; do
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PID="$(cat "${PIDFILE}")"
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if ! ps -p "${PID}" >/dev/null 2>&1 ; then
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do_run=false
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error=1
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else
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sleep 1
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fi
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done
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trap - TERM INT
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return "${error}"
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}
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set_timezone() {
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if [ -z "${APP_SET_TIMEZONE}" ] || [ "$APP_SET_TIMEZONE" == "_NOT_SET" ]; then
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return 0
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fi
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use_timezone="$APP_SET_TIMEZONE"
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timezone_path="/usr/share/zoneinfo/$use_timezone"
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# check timezone file
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if [ ! -f "$timezone_path" ]; then
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echo "can not found file: $timezone_path"
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exit 127
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fi
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# set timezone
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time_now=`date "+%Y-%m-%d_%H-%M-%S"`
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mv /etc/localtime "/etc/localtime.$time_now"
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cp -f "$timezone_path" /etc/localtime
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} |