mirror of
https://github.com/hakanensari/frankfurter.git
synced 2024-10-29 23:32:35 +01:00
155 lines
3.6 KiB
Bash
155 lines
3.6 KiB
Bash
|
#!/usr/bin/env bash
|
||
|
# Use this script to test if a given TCP host/port are available
|
||
|
|
||
|
cmdname=$(basename $0)
|
||
|
|
||
|
echoerr() { if [[ $QUIET -ne 1 ]]; then echo "$@" 1>&2; fi }
|
||
|
|
||
|
usage()
|
||
|
{
|
||
|
cat << USAGE >&2
|
||
|
Usage:
|
||
|
$cmdname host:port [-s] [-t timeout] [-- command args]
|
||
|
-h HOST | --host=HOST Host or IP under test
|
||
|
-p PORT | --port=PORT TCP port under test
|
||
|
Alternatively, you specify the host and port as host:port
|
||
|
-s | --strict Only execute subcommand if the test succeeds
|
||
|
-q | --quiet Don't output any status messages
|
||
|
-t TIMEOUT | --timeout=TIMEOUT
|
||
|
Timeout in seconds, zero for no timeout
|
||
|
-- COMMAND ARGS Execute command with args after the test finishes
|
||
|
USAGE
|
||
|
exit 1
|
||
|
}
|
||
|
wait_for()
|
||
|
{
|
||
|
if [[ $TIMEOUT -gt 0 ]]; then
|
||
|
echoerr "$cmdname: waiting $TIMEOUT seconds for $HOST:$PORT"
|
||
|
else
|
||
|
echoerr "$cmdname: waiting for $HOST:$PORT without a timeout"
|
||
|
fi
|
||
|
start_ts=$(date +%s)
|
||
|
while :
|
||
|
do
|
||
|
(echo > /dev/tcp/$HOST/$PORT) >/dev/null 2>&1
|
||
|
result=$?
|
||
|
if [[ $result -eq 0 ]]; then
|
||
|
end_ts=$(date +%s)
|
||
|
echoerr "$cmdname: $HOST:$PORT is available after $((end_ts - start_ts)) seconds"
|
||
|
break
|
||
|
fi
|
||
|
sleep 1
|
||
|
done
|
||
|
return $result
|
||
|
}
|
||
|
wait_for_wrapper()
|
||
|
{
|
||
|
# In order to support SIGINT during timeout: http://unix.stackexchange.com/a/57692
|
||
|
if [[ $QUIET -eq 1 ]]; then
|
||
|
timeout $TIMEOUT $0 --quiet --child --host=$HOST --port=$PORT --timeout=$TIMEOUT &
|
||
|
else
|
||
|
timeout $TIMEOUT $0 --child --host=$HOST --port=$PORT --timeout=$TIMEOUT &
|
||
|
fi
|
||
|
PID=$!
|
||
|
trap "kill -INT -$PID" INT
|
||
|
wait $PID
|
||
|
RESULT=$?
|
||
|
if [[ $RESULT -ne 0 ]]; then
|
||
|
echoerr "$cmdname: timeout occurred after waiting $TIMEOUT seconds for $HOST:$PORT"
|
||
|
fi
|
||
|
return $RESULT
|
||
|
}
|
||
|
# process arguments
|
||
|
while [[ $# -gt 0 ]]
|
||
|
do
|
||
|
case "$1" in
|
||
|
*:* )
|
||
|
hostport=(${1//:/ })
|
||
|
HOST=${hostport[0]}
|
||
|
PORT=${hostport[1]}
|
||
|
shift 1
|
||
|
;;
|
||
|
--child)
|
||
|
CHILD=1
|
||
|
shift 1
|
||
|
;;
|
||
|
-q | --quiet)
|
||
|
QUIET=1
|
||
|
shift 1
|
||
|
;;
|
||
|
-s | --strict)
|
||
|
STRICT=1
|
||
|
shift 1
|
||
|
;;
|
||
|
-h)
|
||
|
HOST="$2"
|
||
|
if [[ $HOST == "" ]]; then break; fi
|
||
|
shift 2
|
||
|
;;
|
||
|
--host=*)
|
||
|
HOST="${1#*=}"
|
||
|
shift 1
|
||
|
;;
|
||
|
-p)
|
||
|
PORT="$2"
|
||
|
if [[ $PORT == "" ]]; then break; fi
|
||
|
shift 2
|
||
|
;;
|
||
|
--port=*)
|
||
|
PORT="${1#*=}"
|
||
|
shift 1
|
||
|
;;
|
||
|
-t)
|
||
|
TIMEOUT="$2"
|
||
|
if [[ $TIMEOUT == "" ]]; then break; fi
|
||
|
shift 2
|
||
|
;;
|
||
|
--timeout=*)
|
||
|
TIMEOUT="${1#*=}"
|
||
|
shift 1
|
||
|
;;
|
||
|
--)
|
||
|
shift
|
||
|
CLI="$@"
|
||
|
break
|
||
|
;;
|
||
|
--help)
|
||
|
usage
|
||
|
;;
|
||
|
*)
|
||
|
echoerr "Unknown argument: $1"
|
||
|
usage
|
||
|
;;
|
||
|
esac
|
||
|
done
|
||
|
if [[ "$HOST" == "" || "$PORT" == "" ]]; then
|
||
|
echoerr "Error: you need to provide a host and port to test."
|
||
|
usage
|
||
|
fi
|
||
|
TIMEOUT=${TIMEOUT:-15}
|
||
|
STRICT=${STRICT:-0}
|
||
|
CHILD=${CHILD:-0}
|
||
|
QUIET=${QUIET:-0}
|
||
|
if [[ $CHILD -gt 0 ]]; then
|
||
|
wait_for
|
||
|
RESULT=$?
|
||
|
exit $RESULT
|
||
|
else
|
||
|
if [[ $TIMEOUT -gt 0 ]]; then
|
||
|
wait_for_wrapper
|
||
|
RESULT=$?
|
||
|
else
|
||
|
wait_for
|
||
|
RESULT=$?
|
||
|
fi
|
||
|
fi
|
||
|
if [[ $CLI != "" ]]; then
|
||
|
if [[ $RESULT -ne 0 && $STRICT -eq 1 ]]; then
|
||
|
echoerr "$cmdname: strict mode, refusing to execute subprocess"
|
||
|
exit $RESULT
|
||
|
fi
|
||
|
exec $CLI
|
||
|
else
|
||
|
exit $RESULT
|
||
|
fi
|