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#!/bin/sh
# https://github.com/Eficode/wait-for.git
# MIT License
# Modified to wait for multiple ports to open
TIMEOUT=15
QUIET=0
ADDRESSES=
echoerr() {
if [ "$QUIET" -ne 1 ]; then printf "%s\n" "$*" 1>&2; fi
}
usage() {
exitcode="$1"
cat << USAGE >&2
Usage:
wait-for host:port [host:port ... ] [-t timeout] [-- command args]
-q | --quiet Do not output any status messages
-t TIMEOUT | --timeout=timeout Timeout in seconds, zero for no timeout
-- COMMAND ARGS Execute command with args after the test finishes
USAGE
exit "$exitcode"
}
wait_for() {
command="$*"
if [ "$QUIET" -ne 1 ]; then echo "$0: probing host $HOST port $PORT"; fi
for i in `seq $TIMEOUT` ; do
ready=TRUE
set DUMMY $ADDRESSES; shift 1
while [ $# -gt 0 ] ; do
host=$1
port=$2
shift 2
if ! nc -z "$host" "$port" > /dev/null 2>&1 ; then
ready=FALSE
break
fi
done
if [ $ready = TRUE ] ; then
if [ "$QUIET" -ne 1 ] ; then
echo "$0: operation succeeded on try $i"
fi
if [ -n "$command" ] ; then
if [ "$QUIET" -ne 1 ] ;
then echo "$0: exec-ing command $command" ;
fi
exec $command
fi
exit 0
fi
if [ "$QUIET" -ne 1 ] ; then
echo "$0: sleeping after try $i" ;
fi
sleep 1
done
echo "$0: Operation timed out" >&2
exit 1
}
while [ $# -gt 0 ]
do
case "$1" in
*:* )
host=$(printf "%s\n" "$1"| cut -d : -f 1)
port=$(printf "%s\n" "$1"| cut -d : -f 2)
ADDRESSES="$ADDRESSES $host $port"
shift 1
;;
-q | --quiet)
QUIET=1
shift 1
;;
-t)
TIMEOUT="$2"
if [ "$TIMEOUT" = "" ]; then break; fi
shift 2
;;
--timeout=*)
TIMEOUT="${1#*=}"
shift 1
;;
--)
shift
break
;;
--help)
usage 0
;;
*)
echoerr "Unknown argument: $1"
usage 1
;;
esac
done
if [ "$ADDRESSES" = "" ] ; then
echoerr "Error: you need to provide at least one host and port to test."
usage 2
fi
wait_for "$@"
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