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                 splash_leases = _("Splash Leases"),
  58                 tcpconns        = _("TCP Connections"),
  59                 unixsock        = _("UnixSock"),
  60                 uptime          = _("Uptime")
  61         }
  62
  63         -- our collectd menu
  64         local collectd_menu = {
  65                 output  = { "csv", "network", "rrdtool", "unixsock" },
  66                 system  = { "cpu", "df", "disk", "email", "exec", "irq", "load", "memory", "nut", "processes", "uptime" },
  67                 network = { "conntrack", "dns", "interface", "iptables", "netlink", "olsrd", "ping", "splash_leases", "tcpconns", "iwinfo" }
  68         }
  69
  70         -- create toplevel menu nodes
  71         local st = entry({"admin", "statistics"}, template("admin_statistics/index"), _("Statistics"), 80)
  72         st.index = true
  73
  74         entry({"admin", "statistics", "collectd"}, cbi("luci_statistics/collectd"), _("Collectd"), 10).subindex = true
  75
  76
  77         -- populate collectd plugin menu
  78         local index = 1
  79         for section, plugins in luci.util.kspairs( collectd_menu ) do
  80                 local e = entry(
  81                         { "admin", "statistics", "collectd", section },
  82                         firstchild(), labels["s_"..section], index * 10
  83                 )
  84
  85                 e.index = true
  86
  87                 for j, plugin in luci.util.vspairs( plugins ) do
  88                         _entry(
  89                                 { "admin", "statistics", "collectd", section, plugin },
  90                                 cbi("luci_statistics/" .. plugin ),
  91                                 labels[plugin], j * 10
  92                         )
  93                 end
  94
  95                 index = index + 1
  96         end
  97
  98         -- output views
  99         local page = entry( { "admin", "statistics", "graph" }, template("admin_statistics/index"), _("Graphs"), 80)
 100               page.setuser  = "nobody"
 101               page.setgroup = "nogroup"
 102
 103         local vars = luci.http.formvalue(nil, true)
 104         local span = vars.timespan or nil
 105         local host = vars.host or nil
 106
 107         -- get rrd data tree
 108         local tree = luci.statistics.datatree.Instance(host)
 109
 110         local _, plugin, idx
 111         for _, plugin, idx in luci.util.vspairs( tree:plugins() ) do
 112
 113                 -- get plugin instances
 114                 local instances = tree:plugin_instances( plugin )
 115
 116                 -- plugin menu entry
 117                 entry(
 118                         { "admin", "statistics", "graph", plugin },
 119                         call("statistics_render"), labels[plugin], idx
 120                 ).query = { timespan = span , host = host }
 121
 122                 -- if more then one instance is found then generate submenu
 123                 if #instances > 1 then
 124                         local _, inst, idx2
 125                         for _, inst, idx2 in luci.util.vspairs(instances) do
 126                                 -- instance menu entry
 127                                 entry(
 128                                         { "admin", "statistics", "graph", plugin, inst },
 129                                         call("statistics_render"), inst, idx2
 130                                 ).query = { timespan = span , host = host }
 131                         end
 132                 end
 133         end
 134 end
 135
 136 function statistics_render()
 137
 138         require("luci.statistics.rrdtool")
 139         require("luci.template")
 140         require("luci.model.uci")
 141
 142         local vars  = luci.http.formvalue()
 143         local req   = luci.dispatcher.context.request
 144         local path  = luci.dispatcher.context.path
 145         local uci   = luci.model.uci.cursor()
 146         local spans = luci.util.split( uci:get( "luci_statistics", "collectd_rrdtool", "RRATimespans" ), "%s+", nil, true )
 147         local span  = vars.timespan or uci:get( "luci_statistics", "rrdtool", "default_timespan" ) or spans[1]
 148         local host  = vars.host     or uci:get( "luci_statistics", "collectd", "Hostname" ) or luci.sys.hostname()
 149         local opts = { host = vars.host }
 150         local graph = luci.statistics.rrdtool.Graph( luci.util.parse_units( span ), opts )
 151         local hosts = graph.tree:host_instances()
 152
 153         local is_index = false
 154         local i, p, inst, idx
 155
 156         -- deliver image
 157         if vars.img then
 158                 local l12 = require "luci.ltn12"
 159                 local png = io.open(graph.opts.imgpath .. "/" .. vars.img:gsub("%.+", "."), "r")
 160                 if png then
 161                         luci.http.prepare_content("image/png")
 162                         l12.pump.all(l12.source.file(png), luci.http.write)
 163                         png:close()
 164                 end
 165                 return
 166         end
 167
 168         local plugin, instances
 169         local images = { }
 170
 171         -- find requested plugin and instance
 172     for i, p in ipairs( luci.dispatcher.context.path ) do
 173         if luci.dispatcher.context.path[i] == "graph" then
 174             plugin    = luci.dispatcher.context.path[i+1]
 175             instances = { luci.dispatcher.context.path[i+2] }
 176         end
 177     end
 178
 179         -- no instance requested, find all instances
 180         if #instances == 0 then
 181                 --instances = { graph.tree:plugin_instances( plugin )[1] }
 182                 instances = graph.tree:plugin_instances( plugin )
 183                 is_index = true
 184
 185         -- index instance requested
 186         elseif instances[1] == "-" then
 187                 instances[1] = ""
 188                 is_index = true
 189         end
 190
 191
 192         -- render graphs
 193         for i, inst in luci.util.vspairs( instances ) do
 194                 for i, img in luci.util.vspairs( graph:render( plugin, inst, is_index ) ) do
 195                         table.insert( images, graph:strippngpath( img ) )
 196                         images[images[#images]] = inst
 197                 end
 198         end
 199
 200         luci.template.render( "public_statistics/graph", {
 201                 images           = images,
 202                 plugin           = plugin,
 203                 timespans        = spans,
 204                 current_timespan = span,
 205                 hosts            = hosts,
 206                 current_host     = host,
 207                 is_index         = is_index
 208         } )
 209 end