From 9ce153ce7167c11adba8ac225edc7a707e97c6eb Mon Sep 17 00:00:00 2001
From: Federico Ceratto <federico.ceratto@gmail.com>
Date: Wed, 30 Mar 2016 22:40:42 +0100
Subject: Imported Upstream version 1.0.0

---
 charts.d/ap.chart.sh | 160 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 160 insertions(+)
 create mode 100755 charts.d/ap.chart.sh

(limited to 'charts.d/ap.chart.sh')

diff --git a/charts.d/ap.chart.sh b/charts.d/ap.chart.sh
new file mode 100755
index 000000000..4704b89de
--- /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
+}
+
-- 
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