LinuxGSM/lgsm/functions/monitor_gsquery.sh

#!/bin/bash
# LinuxGSM monitor_gsquery.sh function
# Author: Daniel Gibbs
# Website: https://gameservermanagers.com
# Description: Uses gsquery.py to query the server port.
# Detects if the server has frozen with the process still running.

local commandname="MONITOR"
local commandaction="Monitor"
local function_selfname="$(basename $(readlink -f "${BASH_SOURCE[0]}"))"

if [ "${gsquery}" == "yes" ]; then

	# Downloads gsquery.py if missing
	if [ ! -f "${functionsdir}/gsquery.py" ]; then
		fn_fetch_file_github "lgsm/functions" "gsquery.py" "${functionsdir}" "chmodx" "norun" "noforce" "nomd5"
	fi

	info_config.sh

	if [ "${engine}" == "unreal" ]||[ "${engine}" == "unreal2" ]; then
		port=$((port + 1))
	elif [ "${engine}" == "realvirtuality" ]; then
		port=$((port + 1))
	elif [ "${engine}" == "spark" ]; then
		port=$((port + 1))
	elif [ "${engine}" == "idtech3_ql" ]; then
		engine="quakelive"
	fi

	if [ -n "${queryport}" ]; then
		port="${queryport}"
	fi

	fn_print_info "Querying port: gsquery.py enabled"
	fn_script_log_info "Querying port: gsquery.py enabled"
	sleep 1

	# Will query up to 4 times every 15 seconds.
	# Servers changing map can return a failure.
	# Will Wait up to 60 seconds to confirm server is down giving server time to change map.
	totalseconds=0
	for queryattempt in {1..5}; do
		fn_print_dots "Querying port: ${ip}:${port} : ${totalseconds}/${queryattempt} : "
		fn_print_querying_eol
		fn_script_log_info "Querying port: ${ip}:${port} : ${queryattempt} : QUERYING"

		gsquerycmd=$("${functionsdir}"/gsquery.py -a "${ip}" -p "${port}" -e "${engine}" 2>&1)
		exitcode=$?

		sleep 1
		if [ "${exitcode}" == "0" ]; then
			# Server OK
			fn_print_ok "Querying port: ${ip}:${port} : ${queryattempt} : "
			fn_print_ok_eol_nl
			fn_script_log_pass "Querying port: ${ip}:${port} : ${queryattempt} : OK"
			exitcode=0
			break
		else
			# Server failed query
			fn_script_log_info "Querying port: ${ip}:${port} : ${queryattempt} : ${gsquerycmd}"

			if [ "${queryattempt}" == "5" ]; then
				# Server failed query 4 times confirmed failure
				fn_print_fail "Querying port: ${ip}:${port} : ${totalseconds}/${queryattempt} : "
				fn_print_fail_eol_nl
				fn_script_log_error "Querying port: ${ip}:${port} : ${queryattempt} : FAIL"
				sleep 1

				# Send alert if enabled
				alert="restartquery"
				alert.sh
				command_restart.sh
				break
			fi

			# Seconds counter
			for seconds in {1..15}; do
				fn_print_fail "Querying port: ${ip}:${port} : ${totalseconds}/${queryattempt} : ${red}${gsquerycmd}${default}"
				totalseconds=$((totalseconds + 1))
				sleep 1
				if [ "${seconds}" == "15" ]; then
					break
				fi
			done
		fi
	done
fi
core_exit.sh