I submitted this patch to the luci developers list. But if you want to apply it to your existing openwrt luci installation and want to see the power logs from your APCUPS attached device, save this as a .patch file and apply it at the root level. Note that if you've modified "/etc/config/luci_statistics" to include other statistics, that particular file may not patch cleanly.
diff -ruN orig/etc/config/luci_statistics new/etc/config/luci_statistics
--- orig/etc/config/luci_statistics 2014-09-23 02:16:42.000000000 -0400
+++ new/etc/config/luci_statistics 2015-04-06 10:15:37.526954877 -0400
@@ -79,6 +79,11 @@
config 'statistics' 'collectd_load'
option 'enable' '1'
+config statistics 'collectd_apcups'
+ option enable '0'
+ option Host 'localhost'
+ option Port '3551'
+
config 'statistics' 'collectd_logfile'
option 'enable' '0'
option 'LogLevel' 'notice'
diff -ruN orig/usr/bin/stat-genconfig new/usr/bin/stat-genconfig
--- orig/usr/bin/stat-genconfig 2014-09-23 02:16:42.000000000 -0400
+++ new/usr/bin/stat-genconfig 2015-04-06 10:06:16.051309149 -0400
@@ -261,6 +261,12 @@
{ }
},
+ apcups = {
+ { "Host", "Port" },
+ { },
+ { }
+ },
+
conntrack = {
{ },
{ },
diff -ruN orig/usr/lib/lua/luci/controller/luci_statistics/luci_statistics.lua new/usr/lib/lua/luci/controller/luci_statistics/luci_statistics.lua
--- orig/usr/lib/lua/luci/controller/luci_statistics/luci_statistics.lua 2014-09-23 02:16:42.000000000 -0400
+++ new/usr/lib/lua/luci/controller/luci_statistics/luci_statistics.lua 2015-04-06 10:07:57.483967224 -0400
@@ -32,7 +32,7 @@
s_output = _("Output plugins"),
s_system = _("System plugins"),
s_network = _("Network plugins"),
-
+ apcups = _("APCUPS"),
conntrack = _("Conntrack"),
cpu = _("Processor"),
csv = _("CSV Output"),
@@ -62,7 +62,7 @@
-- our collectd menu
local collectd_menu = {
output = { "csv", "network", "rrdtool", "unixsock" },
- system = { "cpu", "df", "disk", "email", "exec", "irq", "load", "memory", "nut", "processes", "uptime" },
+ system = { "apcups", "cpu", "df", "disk", "email", "exec", "irq", "load", "memory", "nut", "processes", "uptime" },
network = { "conntrack", "dns", "interface", "iptables", "netlink", "olsrd", "ping", "tcpconns", "iwinfo" }
}
diff -ruN orig/usr/lib/lua/luci/model/cbi/luci_statistics/apcups.lua new/usr/lib/lua/luci/model/cbi/luci_statistics/apcups.lua
--- orig/usr/lib/lua/luci/model/cbi/luci_statistics/apcups.lua 1969-12-31 19:00:00.000000000 -0500
+++ new/usr/lib/lua/luci/model/cbi/luci_statistics/apcups.lua 2015-04-06 10:09:41.128639904 -0400
@@ -0,0 +1,40 @@
+--[[
+
+Luci configuration model for statistics - collectd load plugin configuration
+(c) 2008 Freifunk Leipzig / Jo-Philipp Wich <xm@leipzig.freifunk.net>
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+$Id$
+
+]]--
+
+m = Map("luci_statistics",
+ translate("APCUPS Plugin Configuration"),
+ translate(
+ "The APSUPS plugin collects statistics about the APC UPS."
+ ))
+
+-- collectd_apcups config section
+s = m:section( NamedSection, "collectd_apcups", "luci_statistics" )
+
+-- collectd_apcups.enable
+enable = s:option( Flag, "enable", translate("Enable this plugin") )
+enable.default = 0
+
+-- collectd_apcups.host (Host)
+host = s:option( Value, "Host", translate("Monitor host"), translate ("Add multiple hosts separated by space."))
+host.default = "localhost"
+host:depends( "enable", 1 )
+
+-- collectd_apcups.port (Port)
+port = s:option( Value, "Port", translate("Port for apcupsd communication") )
+port.isinteger = true
+port.default = 3551
+port:depends( "enable", 1 )
+
+return m
diff -ruN orig/usr/lib/lua/luci/statistics/rrdtool/definitions/apcups.lua new/usr/lib/lua/luci/statistics/rrdtool/definitions/apcups.lua
--- orig/usr/lib/lua/luci/statistics/rrdtool/definitions/apcups.lua 1969-12-31 19:00:00.000000000 -0500
+++ new/usr/lib/lua/luci/statistics/rrdtool/definitions/apcups.lua 2015-04-06 10:41:44.261245653 -0400
@@ -0,0 +1,112 @@
+--[[
+
+Luci statistics - apcups plugin diagram definition
+Copyright © 2008 Freifunk Leipzig / Jo-Philipp Wich <xm@leipzig.freifunk.net>
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+]]--
+
+
+module("luci.statistics.rrdtool.definitions.apcups",package.seeall)
+
+function rrdargs( graph, plugin, plugin_instance, dtype )
+
+ local voltages = {
+ title = "%H: Voltages on APCUPS ",
+ vlabel = "V",
+ number_format = "%5.1lfV",
+ data = {
+ instances = {
+ voltage = { "battery", "input", "output" }
+ },
+
+ options = {
+ voltage_output = { color = "00e000", title = "Output voltage", noarea=true, overlay=true },
+ voltage_battery = { color = "0000ff", title = "Battery voltage", noarea=true, overlay=true },
+ voltage_input = { color = "ffb000", title = "Input voltage", noarea=true, overlay=true }
+ }
+ }
+ }
+
+ local percentload = {
+ title = "%H: Load on APCUPS ",
+ vlabel = "Percent",
+ y_min = "0",
+ y_max = "100",
+ number_format = "%5.1lf%%",
+ data = {
+ sources = {
+ percent_load = { "percent" }
+ },
+ instances = {
+ percent = "percent"
+ },
+ options = {
+ percent_percent = { color = "00ff00", title = "Load level" }
+ }
+ }
+ }
+
+ local charge_percent = {
+ title = "%H: Battery charge on APCUPS ",
+ vlabel = "Percent",
+ y_min = "0",
+ y_max = "100",
+ number_format = "%5.1lf%%",
+ data = {
+ types = { "charge" },
+ options = {
+ charge = { color = "00ff0b", title = "Charge level" }
+ }
+ }
+ }
+
+ local temperature = {
+ title = "%H: Battery temperature on APCUPS ",
+ vlabel = "\176C",
+ number_format = "%5.1lf\176C",
+ data = {
+ types = { "temperature" },
+ options = {
+ temperature = { color = "ffb000", title = "Battery temperature" } }
+ }
+ }
+
+ local timeleft = {
+ title = "%H: Time left on APCUPS ",
+ vlabel = "Minutes",
+ number_format = "%.1lfm",
+ data = {
+ sources = {
+ timeleft = { "timeleft" }
+ },
+ options = {
+ timeleft__timeleft = { color = "0000ff", title = "Time left", transform_rpn = "60,/" }
+ }
+ }
+ }
+
+ local frequency = {
+ title = "%H: Incoming line frequency on APCUPS ",
+ vlabel = "Hz",
+ number_format = "%5.0lfhz",
+ data = {
+ sources = {
+ frequency_input = { "frequency" }
+ },
+ instances = {
+ frequency = "frequency"
+ },
+ options = {
+ frequency_frequency = { color = "000fff", title = "Line frequency" }
+ }
+ }
+ }
+
+ return { voltages, percentload, charge_percent, temperature, timeleft, frequency }
+end
diff -ruN orig/usr/lib/lua/luci/statistics/rrdtool/definitions/apcups.lua~ new/usr/lib/lua/luci/statistics/rrdtool/definitions/apcups.lua~
--- orig/usr/lib/lua/luci/statistics/rrdtool/definitions/apcups.lua~ 1969-12-31 19:00:00.000000000 -0500
+++ new/usr/lib/lua/luci/statistics/rrdtool/definitions/apcups.lua~ 2015-04-06 10:09:08.340427073 -0400
@@ -0,0 +1,113 @@
+--[[
+
+Luci statistics - apcups plugin diagram definition
+Copyright © 2008 Freifunk Leipzig / Jo-Philipp Wich <xm@leipzig.freifunk.net>
+Copyright © 2012 David Woodhouse <dwmw2@infradead.org>
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+]]--
+
+
+module("luci.statistics.rrdtool.definitions.apcups",package.seeall)
+
+function rrdargs( graph, plugin, plugin_instance, dtype )
+
+ local voltages = {
+ title = "%H: Voltages on APCUPS ",
+ vlabel = "V",
+ number_format = "%5.1lfV",
+ data = {
+ instances = {
+ voltage = { "battery", "input", "output" }
+ },
+
+ options = {
+ voltage_output = { color = "00e000", title = "Output voltage", noarea=true, overlay=true },
+ voltage_battery = { color = "0000ff", title = "Battery voltage", noarea=true, overlay=true },
+ voltage_input = { color = "ffb000", title = "Input voltage", noarea=true, overlay=true }
+ }
+ }
+ }
+
+ local percentload = {
+ title = "%H: Load on APCUPS ",
+ vlabel = "Percent",
+ y_min = "0",
+ y_max = "100",
+ number_format = "%5.1lf%%",
+ data = {
+ sources = {
+ percent_load = { "percent" }
+ },
+ instances = {
+ percent = "percent"
+ },
+ options = {
+ percent_percent = { color = "00ff00", title = "Load level" }
+ }
+ }
+ }
+
+ local charge_percent = {
+ title = "%H: Battery charge on APCUPS ",
+ vlabel = "Percent",
+ y_min = "0",
+ y_max = "100",
+ number_format = "%5.1lf%%",
+ data = {
+ types = { "charge" },
+ options = {
+ charge = { color = "00ff0b", title = "Charge level" }
+ }
+ }
+ }
+
+ local temperature = {
+ title = "%H: Battery temperature on APCUPS ",
+ vlabel = "\176C",
+ number_format = "%5.1lf\176C",
+ data = {
+ types = { "temperature" },
+ options = {
+ temperature = { color = "ffb000", title = "Battery temperature" } }
+ }
+ }
+
+ local timeleft = {
+ title = "%H: Time left on APCUPS ",
+ vlabel = "Minutes",
+ number_format = "%.1lfm",
+ data = {
+ sources = {
+ timeleft = { "timeleft" }
+ },
+ options = {
+ timeleft__timeleft = { color = "0000ff", title = "Time left", transform_rpn = "60,/" }
+ }
+ }
+ }
+
+ local frequency = {
+ title = "%H: Incoming line frequency on APCUPS ",
+ vlabel = "Hz",
+ number_format = "%5.0lfhz",
+ data = {
+ sources = {
+ frequency_input = { "frequency" }
+ },
+ instances = {
+ frequency = "frequency"
+ },
+ options = {
+ frequency_frequency = { color = "000fff", title = "Line frequency" }
+ }
+ }
+ }
+
+ return { voltages, percentload, charge_percent, temperature, timeleft, frequency }
+end