#!/bin/bash
##### OPTIONS VERIFICATION #####
if [ -z "$1" ]; then
  exit 1
fi
##### PARAMETERS #####
METRIC="$1"
POOL_PORT="${3:-9001}"
STATSURL="${2:-http://localhost/fpm-status?port=$POOL_PORT}"
CURL="/usr/bin/curl"
CACHE_TTL="55"
CACHE_FILE="/tmp/zabbix.fpm-status.`echo $STATSURL | md5sum | cut -d" " -f1`.cache"
EXEC_TIMEOUT="1"
NOW_TIME=`date '+%s'`
##### RUN #####
if [ -s "${CACHE_FILE}" ]; then
  CACHE_TIME=`stat -c"%Y" "${CACHE_FILE}"`
else
  CACHE_TIME=0
fi
DELTA_TIME=$((${NOW_TIME} - ${CACHE_TIME}))
#
if [ ${DELTA_TIME} -lt ${EXEC_TIMEOUT} ]; then
  sleep $((${EXEC_TIMEOUT} - ${DELTA_TIME}))
elif [ ${DELTA_TIME} -gt ${CACHE_TTL} ]; then
  echo "" >> "${CACHE_FILE}" # !!!
  DATACACHE=`${CURL} --insecure -s "${STATSURL}" 2>&1`
  echo "${DATACACHE}" > "${CACHE_FILE}" # !!!
  chmod 640 "${CACHE_FILE}"
fi

#
case $METRIC in
    pool)
	grep "^pool:" $CACHE_FILE | cut -d ':' -f 2 | sed 's|^\s\+||'
	;;
    process_manager)
	grep "^process manager:" $CACHE_FILE | cut -d ":" -f 2 | sed 's|^\s\+||'
	;;
    start_time)
	grep "^start time:" $CACHE_FILE | sed 's|^start time:\s\+||'
	;;
    start_since)
	grep "^start since:" $CACHE_FILE | cut -d ":" -f 2 | sed 's|^\s\+||'
	;;
    accepted_conn)
	grep "^accepted conn:" $CACHE_FILE | cut -d ":" -f 2 | sed 's|^\s\+||'
	;;
    listen_queue)
	grep "^listen queue:" $CACHE_FILE | cut -d ":" -f 2 | sed 's|^\s\+||'
	;;
    max_listen_queue)
	grep "^max listen queue:" $CACHE_FILE | cut -d ":" -f 2 | sed 's|^\s\+||'
	;;
    listen_queue_len)
	grep "^listen queue len:" $CACHE_FILE | cut -d ":" -f 2 | sed 's|^\s\+||'
	;;
    idle_processes)
	grep "^idle processes:" $CACHE_FILE | cut -d ":" -f 2 | sed 's|^\s\+||'
	;;
    active_processes)
	grep "^active processes:" $CACHE_FILE | cut -d ":" -f 2 | sed 's|^\s\+||'
	;;
    total_processes)
	grep "^total processes:" $CACHE_FILE | cut -d ":" -f 2 | sed 's|^\s\+||'
	;;
    max_active_processes)
	grep "^max active processes:" $CACHE_FILE | cut -d ":" -f 2 | sed 's|^\s\+||'
	;;
    max_children_reached)
	grep "^max children reached:" $CACHE_FILE | cut -d ":" -f 2 | sed 's|^\s\+||'
	;;
    *)
	echo "Unsupported metric $METRIC"
	exit 1
	;;
esac	
#

exit 0