1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
-- Copyright 2008 Freifunk Leipzig / Jo-Philipp Wich <jow@openwrt.org>
-- Copyright 2012 Jo-Philipp Wich <jow@openwrt.org>
-- Licensed to the public under the Apache License 2.0.
module("luci.controller.luci_statistics.luci_statistics", package.seeall)
function index()
require("nixio.fs")
require("luci.util")
require("luci.statistics.datatree")
require("luci.jsonc")
-- override entry(): check for existence <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_general = _("General plugins"),
s_network = _("Network plugins"),
}
-- our collectd menu
local collectd_menu = {
output = { },
general = { },
network = { }
}
local plugin_dir = "/usr/share/luci/statistics/plugins/"
for filename in nixio.fs.dir(plugin_dir) do
local plugin_def = luci.jsonc.parse(nixio.fs.readfile(plugin_dir .. filename))
if type(plugin_def) == "table" then
local name = filename:gsub("%.json", "")
table.insert(collectd_menu[plugin_def.category], name)
labels[name] = plugin_def.title
end
end
-- 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"), _("Setup"), 20).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] or plugin, j * 10
)
end
index = index + 1
end
-- output views
local page = entry( { "admin", "statistics", "graph" }, template("admin_statistics/index"), _("Graphs"), 10)
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 )
-- load plugin menu entry from the description
local plugin_name = "luci.statistics.rrdtool.definitions." .. plugin
local stat, def = pcall( require, plugin_name )
if stat and def and type(def.item) == "function" then
entry(
{ "admin", "statistics", "graph", plugin },
call("statistics_render"), def.item(), idx
).query = { timespan = span , host = host }
end
-- 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)
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 = (#instances > 1)
-- 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
|
