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 (c) 2012 Jo-Philipp Wich <xm@subsignal.org>
   6
   7 Licensed under the Apache License, Version 2.0 (the "License");
   8 you may not use this file except in compliance with the License.
   9 You may obtain a copy of the License at
  10
  11         http://www.apache.org/licenses/LICENSE-2.0
  12
  13 ]]--
  14
  15 module("luci.controller.luci_statistics.luci_statistics", package.seeall)
  16
  17 function index()
  18
  19         require("nixio.fs")
  20         require("luci.util")
  21         require("luci.statistics.datatree")
  22
  23         -- override entry(): check for existance <plugin>.so where <plugin> is derived from the called path
  24         function _entry( path, ... )
  25                 local file = path[5] or path[4]
  26                 if nixio.fs.access( "/usr/lib/collectd/" .. file .. ".so" ) then
  27                         entry( path, ... )
  28                 end
  29         end
  30
  31         local labels = {
  32                 s_output        = _("Output plugins"),
  33                 s_system        = _("System plugins"),
  34                 s_network       = _("Network plugins"),
  35
  36                 conntrack       = _("Conntrack"),
  37                 cpu                     = _("Processor"),
  38                 csv                     = _("CSV Output"),
  39                 df                      = _("Disk Space Usage"),
  40                 disk            = _("Disk Usage"),
  41                 dns                     = _("DNS"),
  42                 email           = _("Email"),
  43                 exec            = _("Exec"),
  44                 interface       = _("Interfaces"),
  45                 iptables        = _("Firewall"),
  46                 irq                     = _("Interrupts"),
  47                 iwinfo          = _("Wireless"),
  48                 load            = _("System Load"),
  49                 memory          = _("Memory"),
  50                 netlink         = _("Netlink"),
  51                 network         = _("Network"),
  52                 nut                     = _("UPS"),
  53                 olsrd           = _("OLSRd"),
  54                 ping            = _("Ping"),
  55                 processes       = _("Processes"),
  56                 rrdtool         = _("RRDTool"),
  57                 tcpconns        = _("TCP Connections"),
  58                 unixsock        = _("UnixSock"),
  59                 uptime          = _("Uptime")
  60         }
  61
  62         -- our collectd menu
  63         local collectd_menu = {
  64                 output  = { "csv", "network", "rrdtool", "unixsock" },
  65                 system  = { "cpu", "df", "disk", "email", "exec", "irq", "load", "memory", "nut", "processes", "uptime" },
  66                 network = { "conntrack", "dns", "interface", "iptables", "netlink", "olsrd", "ping", "tcpconns", "iwinfo" }
  67         }
  68
  69         -- create toplevel menu nodes
  70         local st = entry({"admin", "statistics"}, template("admin_statistics/index"), _("Statistics"), 80)
  71         st.index = true
  72
  73         entry({"admin", "statistics", "collectd"}, cbi("luci_statistics/collectd"), _("Collectd"), 10).subindex = true
  74
  75
  76         -- populate collectd plugin menu
  77         local index = 1
  78         for section, plugins in luci.util.kspairs( collectd_menu ) do
  79                 local e = entry(
  80                         { "admin", "statistics", "collectd", section },
  81                         firstchild(), labels["s_"..section], index * 10
  82                 )
  83
  84                 e.index = true
  85
  86                 for j, plugin in luci.util.vspairs( plugins ) do
  87                         _entry(
  88                                 { "admin", "statistics", "collectd", section, plugin },
  89                                 cbi("luci_statistics/" .. plugin ),
  90                                 labels[plugin], j * 10
  91                         )
  92                 end
  93
  94                 index = index + 1
  95         end
  96
  97         -- output views
  98         local page = entry( { "admin", "statistics", "graph" }, template("admin_statistics/index"), _("Graphs"), 80)
  99               page.setuser  = "nobody"
 100               page.setgroup = "nogroup"
 101
 102         local vars = luci.http.formvalue(nil, true)
 103         local span = vars.timespan or nil
 104         local host = vars.host or nil
 105
 106         -- get rrd data tree
 107         local tree = luci.statistics.datatree.Instance(host)
 108
 109         local _, plugin, idx
 110         for _, plugin, idx 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], idx
 119                 ).query = { timespan = span , host = host }
 120
 121                 -- if more then one instance is found then generate submenu
 122                 if #instances > 1 then
 123                         local _, inst, idx2
 124                         for _, inst, idx2 in luci.util.vspairs(instances) do
 125                                 -- instance menu entry
 126                                 entry(
 127                                         { "admin", "statistics", "graph", plugin, inst },
 128                                         call("statistics_render"), inst, idx2
 129                                 ).query = { timespan = span , host = host }
 130                         end
 131                 end
 132         end
 133 end
 134
 135 function statistics_render()
 136
 137         require("luci.statistics.rrdtool")
 138         require("luci.template")
 139         require("luci.model.uci")
 140
 141         local vars  = luci.http.formvalue()
 142         local req   = luci.dispatcher.context.request
 143         local path  = luci.dispatcher.context.path
 144         local uci   = luci.model.uci.cursor()
 145         local spans = luci.util.split( uci:get( "luci_statistics", "collectd_rrdtool", "RRATimespans" ), "%s+", nil, true )
 146         local span  = vars.timespan or uci:get( "luci_statistics", "rrdtool", "default_timespan" ) or spans[1]
 147         local host  = vars.host     or uci:get( "luci_statistics", "collectd", "Hostname" ) or luci.sys.hostname()
 148         local opts = { host = vars.host }
 149         local graph = luci.statistics.rrdtool.Graph( luci.util.parse_units( span ), opts )
 150         local hosts = graph.tree:host_instances()
 151
 152         local is_index = false
 153         local i, p, inst, idx
 154
 155         -- deliver image
 156         if vars.img then
 157                 local l12 = require "luci.ltn12"
 158                 local png = io.open(graph.opts.imgpath .. "/" .. vars.img:gsub("%.+", "."), "r")
 159                 if png then
 160                         luci.http.prepare_content("image/png")
 161                         l12.pump.all(l12.source.file(png), luci.http.write)
 162                         png:close()
 163                 end
 164                 return
 165         end
 166
 167         local plugin, instances
 168         local images = { }
 169
 170         -- find requested plugin and instance
 171     for i, p in ipairs( luci.dispatcher.context.path ) do
 172         if luci.dispatcher.context.path[i] == "graph" then
 173             plugin    = luci.dispatcher.context.path[i+1]
 174             instances = { luci.dispatcher.context.path[i+2] }
 175         end
 176     end
 177
 178         -- no instance requested, find all instances
 179         if #instances == 0 then
 180                 --instances = { graph.tree:plugin_instances( plugin )[1] }
 181                 instances = graph.tree:plugin_instances( plugin )
 182                 is_index = true
 183
 184         -- index instance requested
 185         elseif instances[1] == "-" then
 186                 instances[1] = ""
 187                 is_index = true
 188         end
 189
 190
 191         -- render graphs
 192         for i, inst in luci.util.vspairs( instances ) do
 193                 for i, img in luci.util.vspairs( graph:render( plugin, inst, is_index ) ) do
 194                         table.insert( images, graph:strippngpath( img ) )
 195                         images[images[#images]] = inst
 196                 end
 197         end
 198
 199         luci.template.render( "public_statistics/graph", {
 200                 images           = images,
 201                 plugin           = plugin,
 202                 timespans        = spans,
 203                 current_timespan = span,
 204                 hosts            = hosts,
 205                 current_host     = host,
 206                 is_index         = is_index
 207         } )
 208 end