applications/luci-statistics/luasrc/controller/luci_statistics/luci_statistics.lua

   1 --[[
   2
   3 Luci statistics - statistics controller module
   4 (c) 2008 Freifunk Leipzig / Jo-Philipp Wich <xm@leipzig.freifunk.net>
   5
   6 Licensed under the Apache License, Version 2.0 (the "License");
   7 you may not use this file except in compliance with the License.
   8 You may obtain a copy of the License at
   9
  10         http://www.apache.org/licenses/LICENSE-2.0
  11
  12 $Id$
  13
  14 ]]--
  15
  16 module("luci.controller.luci_statistics.luci_statistics", package.seeall)
  17
  18 function index()
  19
  20         require("nixio.fs")
  21         require("luci.util")
  22         require("luci.statistics.datatree")
  23
  24         -- get rrd data tree
  25         local tree = luci.statistics.datatree.Instance()
  26
  27         -- override entry(): check for existance <plugin>.so where <plugin> is derived from the called path
  28         function _entry( path, ... )
  29                 local file = path[5] or path[4]
  30                 if nixio.fs.access( "/usr/lib/collectd/" .. file .. ".so" ) then
  31                         entry( path, ... )
  32                 end
  33         end
  34
  35         local labels = {
  36                 s_output        = _("Output plugins"),
  37                 s_system        = _("System plugins"),
  38                 s_network       = _("Network plugins"),
  39
  40                 conntrack       = _("Conntrack"),
  41                 cpu                     = _("Processor"),
  42                 csv                     = _("CSV Output"),
  43                 df                      = _("Disk Space Usage"),
  44                 disk            = _("Disk Usage"),
  45                 dns                     = _("DNS"),
  46                 email           = _("Email"),
  47                 exec            = _("Exec"),
  48                 interface       = _("Interfaces"),
  49                 iptables        = _("Firewall"),
  50                 irq                     = _("Interrupts"),
  51                 iwinfo          = _("Wireless"),
  52                 load            = _("System Load"),
  53                 memory          = _("Memory"),
  54                 netlink         = _("Netlink"),
  55                 network         = _("Network"),
  56                 olsrd           = _("OLSRd"),
  57                 ping            = _("Ping"),
  58                 processes       = _("Processes"),
  59                 rrdtool         = _("RRDTool"),
  60                 tcpconns        = _("TCP Connections"),
  61                 unixsock        = _("UnixSock")
  62         }
  63
  64         -- our collectd menu
  65         local collectd_menu = {
  66                 output  = { "csv", "network", "rrdtool", "unixsock" },
  67                 system  = { "cpu", "df", "disk", "email", "exec", "irq", "load", "memory", "processes" },
  68                 network = { "conntrack", "dns", "interface", "iptables", "netlink", "olsrd", "ping", "tcpconns", "iwinfo" }
  69         }
  70
  71         -- create toplevel menu nodes
  72         local st = entry({"admin", "statistics"}, template("admin_statistics/index"), _("Statistics"), 80)
  73         st.i18n = "statistics"
  74         st.index = true
  75
  76         entry({"admin", "statistics", "collectd"}, cbi("luci_statistics/collectd"), _("Collectd"), 10).subindex = true
  77
  78
  79         -- populate collectd plugin menu
  80         local index = 1
  81         for section, plugins in luci.util.kspairs( collectd_menu ) do
  82                 local e = entry(
  83                         { "admin", "statistics", "collectd", section },
  84                         firstchild(), labels["s_"..section], index * 10
  85                 )
  86
  87                 e.index = true
  88                 e.i18n  = "rrdtool"
  89
  90                 for j, plugin in luci.util.vspairs( plugins ) do
  91                         _entry(
  92                                 { "admin", "statistics", "collectd", section, plugin },
  93                                 cbi("luci_statistics/" .. plugin ),
  94                                 labels[plugin], j * 10
  95                         )
  96                 end
  97
  98                 index = index + 1
  99         end
 100
 101         -- output views
 102         local page = entry( { "admin", "statistics", "graph" }, template("admin_statistics/index"), _("Graphs"), 80)
 103               page.i18n     = "statistics"
 104               page.setuser  = "nobody"
 105               page.setgroup = "nogroup"
 106
 107         local vars = luci.http.formvalue(nil, true)
 108         local span = vars.timespan or nil
 109
 110         for i, plugin in luci.util.vspairs( tree:plugins() ) do
 111
 112                 -- get plugin instances
 113                 local instances = tree:plugin_instances( plugin )
 114
 115                 -- plugin menu entry
 116                 entry(
 117                         { "admin", "statistics", "graph", plugin },
 118                         call("statistics_render"), labels[plugin], i
 119                 ).query = { timespan = span }
 120
 121                 -- if more then one instance is found then generate submenu
 122                 if #instances > 1 then
 123                         for j, inst in luci.util.vspairs(instances) do
 124                                 -- instance menu entry
 125                                 entry(
 126                                         { "admin", "statistics", "graph", plugin, inst },
 127                                         call("statistics_render"), inst, j
 128                                 ).query = { timespan = span }
 129                         end
 130                 end
 131         end
 132 end
 133
 134 function statistics_render()
 135
 136         require("luci.statistics.rrdtool")
 137         require("luci.template")
 138         require("luci.model.uci")
 139
 140         local vars  = luci.http.formvalue()
 141         local req   = luci.dispatcher.context.request
 142         local path  = luci.dispatcher.context.path
 143         local uci   = luci.model.uci.cursor()
 144         local spans = luci.util.split( uci:get( "luci_statistics", "collectd_rrdtool", "RRATimespans" ), "%s+", nil, true )
 145         local span  = vars.timespan or uci:get( "luci_statistics", "rrdtool", "default_timespan" ) or spans[1]
 146         local graph = luci.statistics.rrdtool.Graph( luci.util.parse_units( span ) )
 147
 148         local is_index = false
 149
 150         -- deliver image
 151         if vars.img then
 152                 local l12 = require "luci.ltn12"
 153                 local png = io.open(graph.opts.imgpath .. "/" .. vars.img:gsub("%.+", "."), "r")
 154                 if png then
 155                         luci.http.prepare_content("image/png")
 156                         l12.pump.all(l12.source.file(png), luci.http.write)
 157                         png:close()
 158                 end
 159                 return
 160         end
 161
 162         local plugin, instances
 163         local images = { }
 164
 165         -- find requested plugin and instance
 166     for i, p in ipairs( luci.dispatcher.context.path ) do
 167         if luci.dispatcher.context.path[i] == "graph" then
 168             plugin    = luci.dispatcher.context.path[i+1]
 169             instances = { luci.dispatcher.context.path[i+2] }
 170         end
 171     end
 172
 173         -- no instance requested, find all instances
 174         if #instances == 0 then
 175                 --instances = { graph.tree:plugin_instances( plugin )[1] }
 176                 instances = graph.tree:plugin_instances( plugin )
 177                 is_index = true
 178
 179         -- index instance requested
 180         elseif instances[1] == "-" then
 181                 instances[1] = ""
 182                 is_index = true
 183         end
 184
 185
 186         -- render graphs
 187         for i, inst in ipairs( instances ) do
 188                 for i, img in ipairs( graph:render( plugin, inst, is_index ) ) do
 189                         table.insert( images, graph:strippngpath( img ) )
 190                         images[images[#images]] = inst
 191                 end
 192         end
 193
 194         luci.template.render( "public_statistics/graph", {
 195                 images           = images,
 196                 plugin           = plugin,
 197                 timespans        = spans,
 198                 current_timespan = span,
 199                 is_index         = is_index
 200         } )
 201 end