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Diffstat (limited to 'charts.d/ap.chart.sh')
| -rwxr-xr-x | charts.d/ap.chart.sh | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/charts.d/ap.chart.sh b/charts.d/ap.chart.sh new file mode 100755 index 00000000..4704b89d --- /dev/null +++ b/charts.d/ap.chart.sh @@ -0,0 +1,160 @@ +#!/bin/sh + +# _update_every is a special variable - it holds the number of seconds +# between the calls of the _update() function +ap_update_every= +ap_priority=6900 + +declare -A ap_devs=() + +export PATH="${PATH}:/sbin:/usr/sbin:/usr/local/sbin" + +# _check is called once, to find out if this chart should be enabled or not +ap_check() { + local ev=$(iw dev | awk ' + BEGIN { + i = ""; + ssid = ""; + ap = 0; + } + /^[ \t]+Interface / { + if( ap == 1 ) { + print "ap_devs[" i "]=\"" ssid "\"" + } + + i = $2; + ssid = ""; + ap = 0; + } + /^[ \t]+ssid / { ssid = $2; } + /^[ \t]+type AP$/ { ap = 1; } + END { + if( ap == 1 ) { + print "ap_devs[" i "]=\"" ssid "\"" + } + } + ') + eval "${ev}" + + # this should return: + # - 0 to enable the chart + # - 1 to disable the chart + + [ ${#ap_devs[@]} -gt 0 ] && return 0 + return 1 +} + +# _create is called once, to create the charts +ap_create() { + local ssid dev + + for dev in "${!ap_devs[@]}" + do + ssid="${ap_devs[${dev}]}" + + # create the chart with 3 dimensions + cat <<EOF +CHART ap_clients.${dev} '' "Connected clients to ${ssid} on ${dev}" "clients" ${dev} ap.clients line $[ap_priority + 1] $ap_update_every +DIMENSION clients '' absolute 1 1 + +CHART ap_bandwidth.${dev} '' "Bandwidth for ${ssid} on ${dev}" "kilobits/s" ${dev} ap.net area $[ap_priority + 2] $ap_update_every +DIMENSION received '' incremental 8 1024 +DIMENSION sent '' incremental -8 1024 + +CHART ap_packets.${dev} '' "Packets for ${ssid} on ${dev}" "packets/s" ${dev} ap.packets line $[ap_priority + 3] $ap_update_every +DIMENSION received '' incremental 1 1 +DIMENSION sent '' incremental -1 1 + +CHART ap_issues.${dev} '' "Transmit Issues for ${ssid} on ${dev}" "issues/s" ${dev} ap.issues line $[ap_priority + 4] $ap_update_every +DIMENSION retries 'tx retries' incremental 1 1 +DIMENSION failures 'tx failures' incremental -1 1 + +CHART ap_signal.${dev} '' "Average Signal for ${ssid} on ${dev}" "dBm" ${dev} ap.signal line $[ap_priority + 5] $ap_update_every +DIMENSION signal 'average signal' absolute 1 1 + +CHART ap_bitrate.${dev} '' "Bitrate for ${ssid} on ${dev}" "Mbps" ${dev} ap.bitrate line $[ap_priority + 6] $ap_update_every +DIMENSION receive '' absolute 1 1000 +DIMENSION transmit '' absolute -1 1000 +DIMENSION expected 'expected throughput' absolute 1 1000 +EOF + + done + + return 0 +} + +# _update is called continiously, to collect the values +ap_update() { + # the first argument to this function is the microseconds since last update + # pass this parameter to the BEGIN statement (see bellow). + + # do all the work to collect / calculate the values + # for each dimension + # remember: KEEP IT SIMPLE AND SHORT + + for dev in "${!ap_devs[@]}" + do + iw ${dev} station dump |\ + awk " + BEGIN { + c = 0; + rb = 0; + tb = 0; + rp = 0; + tp = 0; + tr = 0; + tf = 0; + tt = 0; + rt = 0; + s = 0; + g = 0; + e = 0; + } + /^Station/ { c++; } + /^[ \\t]+rx bytes:/ { rb += \$3 } + /^[ \\t]+tx bytes:/ { tb += \$3 } + /^[ \\t]+rx packets:/ { rp += \$3 } + /^[ \\t]+tx packets:/ { tp += \$3 } + /^[ \\t]+tx retries:/ { tr += \$3 } + /^[ \\t]+tx failed:/ { tf += \$3 } + /^[ \\t]+signal:/ { s += \$2; } + /^[ \\t]+rx bitrate:/ { x = \$3; rt += x * 1000; } + /^[ \\t]+tx bitrate:/ { x = \$3; tt += x * 1000; } + /^[ \\t]+expected throughput:(.*)Mbps/ { + x=\$3; + sub(/Mbps/, \"\", x); + e += x * 1000; + } + END { + print \"BEGIN ap_clients.${dev}\" + print \"SET clients = \" c; + print \"END\" + print \"BEGIN ap_bandwidth.${dev}\" + print \"SET received = \" rb; + print \"SET sent = \" tb; + print \"END\" + print \"BEGIN ap_packets.${dev}\" + print \"SET received = \" rp; + print \"SET sent = \" tp; + print \"END\" + print \"BEGIN ap_issues.${dev}\" + print \"SET retries = \" tr; + print \"SET failures = \" tf; + print \"END\" + print \"BEGIN ap_signal.${dev}\" + print \"SET signal = \" s / c; + print \"END\" + + if( c == 0 ) c = 1; + print \"BEGIN ap_bitrate.${dev}\" + print \"SET receive = \" rt / c; + print \"SET transmit = \" tt / c; + print \"SET expected = \" e / c; + print \"END\" + } + " + done + + return 0 +} + |