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# shellcheck shell=bash
# no need for shebang - this file is loaded from charts.d.plugin
# SPDX-License-Identifier: GPL-3.0-or-later
# netdata
# real-time performance and health monitoring, done right!
# (C) 2016 Costa Tsaousis <costa@tsaousis.gr>
#
# the URL to download apache status info
apache_url="http://127.0.0.1:80/server-status?auto"
apache_curl_opts=
# _update_every is a special variable - it holds the number of seconds
# between the calls of the _update() function
apache_update_every=
apache_priority=60000
# convert apache floating point values
# to integer using this multiplier
# this only affects precision - the values
# will be in the proper units
apache_decimal_detail=1000000
declare -a apache_response=()
apache_accesses=0
apache_kbytes=0
apache_reqpersec=0
apache_bytespersec=0
apache_bytesperreq=0
apache_busyworkers=0
apache_idleworkers=0
apache_connstotal=0
apache_connsasyncwriting=0
apache_connsasynckeepalive=0
apache_connsasyncclosing=0
apache_keys_detected=0
apache_has_conns=0
apache_key_accesses=
apache_key_kbytes=
apache_key_reqpersec=
apache_key_bytespersec=
apache_key_bytesperreq=
apache_key_busyworkers=
apache_key_idleworkers=
apache_key_scoreboard=
apache_key_connstotal=
apache_key_connsasyncwriting=
apache_key_connsasynckeepalive=
apache_key_connsasyncclosing=
apache_detect() {
local i=0
for x in "${@}"; do
case "${x}" in
'Total Accesses') apache_key_accesses=$((i + 1)) ;;
'Total kBytes') apache_key_kbytes=$((i + 1)) ;;
'ReqPerSec') apache_key_reqpersec=$((i + 1)) ;;
'BytesPerSec') apache_key_bytespersec=$((i + 1)) ;;
'BytesPerReq') apache_key_bytesperreq=$((i + 1)) ;;
'BusyWorkers') apache_key_busyworkers=$((i + 1)) ;;
'IdleWorkers') apache_key_idleworkers=$((i + 1)) ;;
'ConnsTotal') apache_key_connstotal=$((i + 1)) ;;
'ConnsAsyncWriting') apache_key_connsasyncwriting=$((i + 1)) ;;
'ConnsAsyncKeepAlive') apache_key_connsasynckeepalive=$((i + 1)) ;;
'ConnsAsyncClosing') apache_key_connsasyncclosing=$((i + 1)) ;;
'Scoreboard') apache_key_scoreboard=$((i)) ;;
esac
i=$((i + 1))
done
# we will not check of the Conns*
# keys, since these are apache 2.4 specific
[ -z "${apache_key_accesses}" ] && error "missing 'Total Accesses' from apache server: ${*}" && return 1
[ -z "${apache_key_kbytes}" ] && error "missing 'Total kBytes' from apache server: ${*}" && return 1
[ -z "${apache_key_reqpersec}" ] && error "missing 'ReqPerSec' from apache server: ${*}" && return 1
[ -z "${apache_key_bytespersec}" ] && error "missing 'BytesPerSec' from apache server: ${*}" && return 1
[ -z "${apache_key_bytesperreq}" ] && error "missing 'BytesPerReq' from apache server: ${*}" && return 1
[ -z "${apache_key_busyworkers}" ] && error "missing 'BusyWorkers' from apache server: ${*}" && return 1
[ -z "${apache_key_idleworkers}" ] && error "missing 'IdleWorkers' from apache server: ${*}" && return 1
[ -z "${apache_key_scoreboard}" ] && error "missing 'Scoreboard' from apache server: ${*}" && return 1
if [ ! -z "${apache_key_connstotal}" ] &&
[ ! -z "${apache_key_connsasyncwriting}" ] &&
[ ! -z "${apache_key_connsasynckeepalive}" ] &&
[ ! -z "${apache_key_connsasyncclosing}" ]; then
apache_has_conns=1
else
apache_has_conns=0
fi
return 0
}
apache_get() {
local oIFS="${IFS}" ret
# shellcheck disable=2207
IFS=$':\n' apache_response=($(run curl -Ss ${apache_curl_opts} "${apache_url}"))
ret=$?
IFS="${oIFS}"
if [ $ret -ne 0 ] || [ "${#apache_response[@]}" -eq 0 ]; then
return 1
fi
# the last line on the apache output is "Scoreboard"
# we use this label to detect that the output has a new word count
if [ ${apache_keys_detected} -eq 0 ] || [ "${apache_response[${apache_key_scoreboard}]}" != "Scoreboard" ]; then
apache_detect "${apache_response[@]}" || return 1
apache_keys_detected=1
fi
apache_accesses="${apache_response[${apache_key_accesses}]}"
apache_kbytes="${apache_response[${apache_key_kbytes}]}"
float2int "${apache_response[${apache_key_reqpersec}]}" ${apache_decimal_detail}
apache_reqpersec=${FLOAT2INT_RESULT}
float2int "${apache_response[${apache_key_bytespersec}]}" ${apache_decimal_detail}
apache_bytespersec=${FLOAT2INT_RESULT}
float2int "${apache_response[${apache_key_bytesperreq}]}" ${apache_decimal_detail}
apache_bytesperreq=${FLOAT2INT_RESULT}
apache_busyworkers="${apache_response[${apache_key_busyworkers}]}"
apache_idleworkers="${apache_response[${apache_key_idleworkers}]}"
if
[ -z "${apache_accesses}" ] ||
[ -z "${apache_kbytes}" ] ||
[ -z "${apache_reqpersec}" ] ||
[ -z "${apache_bytespersec}" ] ||
[ -z "${apache_bytesperreq}" ] ||
[ -z "${apache_busyworkers}" ]
[ -z "${apache_idleworkers}" ]
then
error "empty values got from apache server: ${apache_response[*]}"
return 1
fi
if [ ${apache_has_conns} -eq 1 ]; then
apache_connstotal="${apache_response[${apache_key_connstotal}]}"
apache_connsasyncwriting="${apache_response[${apache_key_connsasyncwriting}]}"
apache_connsasynckeepalive="${apache_response[${apache_key_connsasynckeepalive}]}"
apache_connsasyncclosing="${apache_response[${apache_key_connsasyncclosing}]}"
fi
return 0
}
# _check is called once, to find out if this chart should be enabled or not
apache_check() {
apache_get
# shellcheck disable=2181
if [ $? -ne 0 ]; then
# shellcheck disable=2154
error "cannot find stub_status on URL '${apache_url}'. Please set apache_url='http://apache.server:80/server-status?auto' in $confd/apache.conf"
return 1
fi
# this should return:
# - 0 to enable the chart
# - 1 to disable the chart
return 0
}
# _create is called once, to create the charts
apache_create() {
cat <<EOF
CHART apache_local.bytesperreq '' "apache Lifetime Avg. Response Size" "bytes/request" statistics apache.bytesperreq area $((apache_priority + 8)) $apache_update_every
DIMENSION size '' absolute 1 ${apache_decimal_detail}
CHART apache_local.workers '' "apache Workers" "workers" workers apache.workers stacked $((apache_priority + 5)) $apache_update_every
DIMENSION idle '' absolute 1 1
DIMENSION busy '' absolute 1 1
CHART apache_local.reqpersec '' "apache Lifetime Avg. Requests/s" "requests/s" statistics apache.reqpersec line $((apache_priority + 6)) $apache_update_every
DIMENSION requests '' absolute 1 ${apache_decimal_detail}
CHART apache_local.bytespersec '' "apache Lifetime Avg. Bandwidth/s" "kilobits/s" statistics apache.bytespersec area $((apache_priority + 7)) $apache_update_every
DIMENSION sent '' absolute 8 $((apache_decimal_detail * 1000))
CHART apache_local.requests '' "apache Requests" "requests/s" requests apache.requests line $((apache_priority + 1)) $apache_update_every
DIMENSION requests '' incremental 1 1
CHART apache_local.net '' "apache Bandwidth" "kilobits/s" bandwidth apache.net area $((apache_priority + 3)) $apache_update_every
DIMENSION sent '' incremental 8 1
EOF
if [ ${apache_has_conns} -eq 1 ]; then
cat <<EOF2
CHART apache_local.connections '' "apache Connections" "connections" connections apache.connections line $((apache_priority + 2)) $apache_update_every
DIMENSION connections '' absolute 1 1
CHART apache_local.conns_async '' "apache Async Connections" "connections" connections apache.conns_async stacked $((apache_priority + 4)) $apache_update_every
DIMENSION keepalive '' absolute 1 1
DIMENSION closing '' absolute 1 1
DIMENSION writing '' absolute 1 1
EOF2
fi
return 0
}
# _update is called continuously, to collect the values
apache_update() {
# the first argument to this function is the microseconds since last update
# pass this parameter to the BEGIN statement (see bellow).
# do all the work to collect / calculate the values
# for each dimension
# remember: KEEP IT SIMPLE AND SHORT
apache_get || return 1
# write the result of the work.
cat <<VALUESEOF
BEGIN apache_local.requests $1
SET requests = $((apache_accesses))
END
BEGIN apache_local.net $1
SET sent = $((apache_kbytes))
END
BEGIN apache_local.reqpersec $1
SET requests = $((apache_reqpersec))
END
BEGIN apache_local.bytespersec $1
SET sent = $((apache_bytespersec))
END
BEGIN apache_local.bytesperreq $1
SET size = $((apache_bytesperreq))
END
BEGIN apache_local.workers $1
SET idle = $((apache_idleworkers))
SET busy = $((apache_busyworkers))
END
VALUESEOF
if [ ${apache_has_conns} -eq 1 ]; then
cat <<VALUESEOF2
BEGIN apache_local.connections $1
SET connections = $((apache_connstotal))
END
BEGIN apache_local.conns_async $1
SET keepalive = $((apache_connsasynckeepalive))
SET closing = $((apache_connsasyncclosing))
SET writing = $((apache_connsasyncwriting))
END
VALUESEOF2
fi
return 0
}
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