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--[[
Luci statistics - statistics controller module
(c) 2008 Freifunk Leipzig / Jo-Philipp Wich <xm@leipzig.freifunk.net>
(c) 2012 Jo-Philipp Wich <xm@subsignal.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.controller.luci_statistics.luci_statistics", package.seeall)
function index()
require("nixio.fs")
require("luci.util")
require("luci.statistics.datatree")
-- override entry(): check for existance <plugin>.so where <plugin> is derived from the called path
function _entry( path, ... )
local file = path[5] or path[4]
if nixio.fs.access( "/usr/lib/collectd/" .. file .. ".so" ) then
entry( path, ... )
end
end
local labels = {
s_output = _("Output plugins"),
s_system = _("System plugins"),
s_network = _("Network plugins"),
conntrack = _("Conntrack"),
cpu = _("Processor"),
csv = _("CSV Output"),
df = _("Disk Space Usage"),
disk = _("Disk Usage"),
dns = _("DNS"),
email = _("Email"),
exec = _("Exec"),
interface = _("Interfaces"),
iptables = _("Firewall"),
irq = _("Interrupts"),
iwinfo = _("Wireless"),
load = _("System Load"),
memory = _("Memory"),
netlink = _("Netlink"),
network = _("Network"),
nut = _("UPS"),
olsrd = _("OLSRd"),
ping = _("Ping"),
processes = _("Processes"),
rrdtool = _("RRDTool"),
tcpconns = _("TCP Connections"),
unixsock = _("UnixSock"),
uptime = _("Uptime")
}
-- our collectd menu
local collectd_menu = {
output = { "csv", "network", "rrdtool", "unixsock" },
system = { "cpu", "df", "disk", "email", "exec", "irq", "load", "memory", "nut", "processes", "uptime" },
network = { "conntrack", "dns", "interface", "iptables", "netlink", "olsrd", "ping", "tcpconns", "iwinfo" }
}
-- create toplevel menu nodes
local st = entry({"admin", "statistics"}, template("admin_statistics/index"), _("Statistics"), 80)
st.index = true
entry({"admin", "statistics", "collectd"}, cbi("luci_statistics/collectd"), _("Collectd"), 10).subindex = true
-- populate collectd plugin menu
local index = 1
for section, plugins in luci.util.kspairs( collectd_menu ) do
local e = entry(
{ "admin", "statistics", "collectd", section },
firstchild(), labels["s_"..section], index * 10
)
e.index = true
for j, plugin in luci.util.vspairs( plugins ) do
_entry(
{ "admin", "statistics", "collectd", section, plugin },
cbi("luci_statistics/" .. plugin ),
labels[plugin], j * 10
)
end
index = index + 1
end
-- output views
local page = entry( { "admin", "statistics", "graph" }, template("admin_statistics/index"), _("Graphs"), 80)
page.setuser = "nobody"
page.setgroup = "nogroup"
local vars = luci.http.formvalue(nil, true)
local span = vars.timespan or nil
local host = vars.host or nil
-- get rrd data tree
local tree = luci.statistics.datatree.Instance(host)
local _, plugin, idx
for _, plugin, idx in luci.util.vspairs( tree:plugins() ) do
-- get plugin instances
local instances = tree:plugin_instances( plugin )
-- plugin menu entry
entry(
{ "admin", "statistics", "graph", plugin },
call("statistics_render"), labels[plugin], idx
).query = { timespan = span , host = host }
-- if more then one instance is found then generate submenu
if #instances > 1 then
local _, inst, idx2
for _, inst, idx2 in luci.util.vspairs(instances) do
-- instance menu entry
entry(
{ "admin", "statistics", "graph", plugin, inst },
call("statistics_render"), inst, idx2
).query = { timespan = span , host = host }
end
end
end
end
function statistics_render()
require("luci.statistics.rrdtool")
require("luci.template")
require("luci.model.uci")
local vars = luci.http.formvalue()
local req = luci.dispatcher.context.request
local path = luci.dispatcher.context.path
local uci = luci.model.uci.cursor()
local spans = luci.util.split( uci:get( "luci_statistics", "collectd_rrdtool", "RRATimespans" ), "%s+", nil, true )
local span = vars.timespan or uci:get( "luci_statistics", "rrdtool", "default_timespan" ) or spans[1]
local host = vars.host or uci:get( "luci_statistics", "collectd", "Hostname" ) or luci.sys.hostname()
local opts = { host = vars.host }
local graph = luci.statistics.rrdtool.Graph( luci.util.parse_units( span ), opts )
local hosts = graph.tree:host_instances()
local is_index = false
local i, p, inst, idx
-- deliver image
if vars.img then
local l12 = require "luci.ltn12"
local png = io.open(graph.opts.imgpath .. "/" .. vars.img:gsub("%.+", "."), "r")
if png then
luci.http.prepare_content("image/png")
l12.pump.all(l12.source.file(png), luci.http.write)
png:close()
end
return
end
local plugin, instances
local images = { }
-- find requested plugin and instance
for i, p in ipairs( luci.dispatcher.context.path ) do
if luci.dispatcher.context.path[i] == "graph" then
plugin = luci.dispatcher.context.path[i+1]
instances = { luci.dispatcher.context.path[i+2] }
end
end
-- no instance requested, find all instances
if #instances == 0 then
--instances = { graph.tree:plugin_instances( plugin )[1] }
instances = graph.tree:plugin_instances( plugin )
is_index = true
-- index instance requested
elseif instances[1] == "-" then
instances[1] = ""
is_index = true
end
-- render graphs
for i, inst in luci.util.vspairs( instances ) do
for i, img in luci.util.vspairs( graph:render( plugin, inst, is_index ) ) do
table.insert( images, graph:strippngpath( img ) )
images[images[#images]] = inst
end
end
luci.template.render( "public_statistics/graph", {
images = images,
plugin = plugin,
timespans = spans,
current_timespan = span,
hosts = hosts,
current_host = host,
is_index = is_index
} )
end
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