From 1e6c93250172946eeb38e94a92a1fd12c9d3011e Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 7 Nov 2018 13:22:44 +0100
Subject: Merging upstream version 1.11.0+dfsg.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 collectors/charts.d.plugin/ap/ap.chart.sh | 182 ++++++++++++++++++++++++++++++
 1 file changed, 182 insertions(+)
 create mode 100644 collectors/charts.d.plugin/ap/ap.chart.sh

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

diff --git a/collectors/charts.d.plugin/ap/ap.chart.sh b/collectors/charts.d.plugin/ap/ap.chart.sh
new file mode 100644
index 000000000..ccc36120c
--- /dev/null
+++ b/collectors/charts.d.plugin/ap/ap.chart.sh
@@ -0,0 +1,182 @@
+# 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>
+#
+
+# _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=()
+
+# _check is called once, to find out if this chart should be enabled or not
+ap_check() {
+	require_cmd iw || return 1
+	local ev
+	ev=$(run 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
+
+	[ ${#ap_devs[@]} -gt 0 ] && return 0
+	error "no devices found in AP mode, with 'iw dev'"
+	return 1
+}
+
+# _create is called once, to create the charts
+ap_create() {
+	local ssid dev
+
+	for dev in "${!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)) $ap_update_every
+DIMENSION signal 'average signal' absolute 1 1000
+
+CHART ap_bitrate.${dev} '' "Bitrate for ${ssid} on ${dev}" "Mbps" ${dev} ap.bitrate line $((ap_priority + 6)) $ap_update_every
+DIMENSION receive '' absolute 1 1000
+DIMENSION transmit '' absolute -1 1000
+DIMENSION expected 'expected throughput' absolute 1 1000
+EOF
+	done
+
+	return 0
+}
+
+# _update is called continuously, to collect the values
+ap_update() {
+	# the first argument to this function is the microseconds since last update
+	# pass this parameter to the BEGIN statement (see bellow).
+
+	# do all the work to collect / calculate the values
+	# for each dimension
+	# remember: KEEP IT SIMPLE AND SHORT
+
+	for dev in "${!ap_devs[@]}"
+	do
+	    echo
+	    echo "DEVICE ${dev}"
+		iw "${dev}" station dump
+	done | awk "
+        function zero_data() {
+            dev = \"\";
+            c = 0;
+            rb = 0;
+            tb = 0;
+            rp = 0;
+            tp = 0;
+            tr = 0;
+            tf = 0;
+            tt = 0;
+            rt = 0;
+            s = 0;
+            g = 0;
+            e = 0;
+        }
+        function print_device() {
+            if(dev != \"\" && length(dev) > 0) {
+                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\";
+
+                if( c == 0 ) c = 1;
+                print \"BEGIN ap_signal.\" dev;
+                print \"SET signal = \" int(s / c);
+                print \"END\";
+                print \"BEGIN ap_bitrate.\" dev;
+                print \"SET receive = \" int(rt / c);
+                print \"SET transmit = \" int(tt / c);
+                print \"SET expected = \" int(e / c);
+                print \"END\";
+            }
+            zero_data();
+        }
+        BEGIN {
+            zero_data();
+        }
+        /^DEVICE / {
+            print_device();
+            dev = \$2;
+        }
+        /^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:/     { x = \$2; s  += x * 1000; }
+        /^[ \\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_device();
+        }
+    "
+
+	return 0
+}
+
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