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

   1 -- Copyright 2008 Freifunk Leipzig / Jo-Philipp Wich <jow@openwrt.org>
   2 -- Copyright 2012 Jo-Philipp Wich <jow@openwrt.org>
   3 -- Licensed to the public under the Apache License 2.0.
   4
   5 module("luci.controller.luci_statistics.luci_statistics", package.seeall)
   6
   7 function index()
   8
   9         require("nixio.fs")
  10         require("luci.util")
  11         require("luci.statistics.datatree")
  12
  13         -- override entry(): check for existance <plugin>.so where <plugin> is derived from the called path
  14         function _entry( path, ... )
  15                 local file = path[5] or path[4]
  16                 if nixio.fs.access( "/usr/lib/collectd/" .. file .. ".so" ) then
  17                         entry( path, ... )
  18                 end
  19         end
  20
  21         local labels = {
  22                 s_output        = _("Output plugins"),
  23                 s_system        = _("System plugins"),
  24                 s_network       = _("Network plugins"),
  25
  26                 conntrack       = _("Conntrack"),
  27                 cpu                     = _("Processor"),
  28                 csv                     = _("CSV Output"),
  29                 df                      = _("Disk Space Usage"),
  30                 disk            = _("Disk Usage"),
  31                 dns                     = _("DNS"),
  32                 email           = _("Email"),
  33                 exec            = _("Exec"),
  34                 interface       = _("Interfaces"),
  35                 iptables        = _("Firewall"),
  36                 irq                     = _("Interrupts"),
  37                 iwinfo          = _("Wireless"),
  38                 load            = _("System Load"),
  39                 memory          = _("Memory"),
  40                 netlink         = _("Netlink"),
  41                 network         = _("Network"),
  42                 nut                     = _("UPS"),
  43                 olsrd           = _("OLSRd"),
  44                 ping            = _("Ping"),
  45                 processes       = _("Processes"),
  46                 rrdtool         = _("RRDTool"),
  47                 splash_leases = _("Splash Leases"),
  48                 tcpconns        = _("TCP Connections"),
  49                 unixsock        = _("UnixSock"),
  50                 uptime          = _("Uptime")
  51         }
  52
  53         -- our collectd menu
  54         local collectd_menu = {
  55                 output  = { "csv", "network", "rrdtool", "unixsock" },
  56                 system  = { "cpu", "df", "disk", "email", "exec", "irq", "load", "memory", "nut", "processes", "uptime" },
  57                 network = { "conntrack", "dns", "interface", "iptables", "netlink", "olsrd", "ping", "splash_leases", "tcpconns", "iwinfo" }
  58         }
  59
  60         -- create toplevel menu nodes
  61         local st = entry({"admin", "statistics"}, template("admin_statistics/index"), _("Statistics"), 80)
  62         st.index = true
  63
  64         entry({"admin", "statistics", "collectd"}, cbi("luci_statistics/collectd"), _("Collectd"), 10).subindex = true
  65
  66
  67         -- populate collectd plugin menu
  68         local index = 1
  69         for section, plugins in luci.util.kspairs( collectd_menu ) do
  70                 local e = entry(
  71                         { "admin", "statistics", "collectd", section },
  72                         firstchild(), labels["s_"..section], index * 10
  73                 )
  74
  75                 e.index = true
  76
  77                 for j, plugin in luci.util.vspairs( plugins ) do
  78                         _entry(
  79                                 { "admin", "statistics", "collectd", section, plugin },
  80                                 cbi("luci_statistics/" .. plugin ),
  81                                 labels[plugin], j * 10
  82                         )
  83                 end
  84
  85                 index = index + 1
  86         end
  87
  88         -- output views
  89         local page = entry( { "admin", "statistics", "graph" }, template("admin_statistics/index"), _("Graphs"), 80)
  90               page.setuser  = "nobody"
  91               page.setgroup = "nogroup"
  92
  93         local vars = luci.http.formvalue(nil, true)
  94         local span = vars.timespan or nil
  95         local host = vars.host or nil
  96
  97         -- get rrd data tree
  98         local tree = luci.statistics.datatree.Instance(host)
  99
 100         local _, plugin, idx
 101         for _, plugin, idx in luci.util.vspairs( tree:plugins() ) do
 102
 103                 -- get plugin instances
 104                 local instances = tree:plugin_instances( plugin )
 105
 106                 -- plugin menu entry
 107                 entry(
 108                         { "admin", "statistics", "graph", plugin },
 109                         call("statistics_render"), labels[plugin], idx
 110                 ).query = { timespan = span , host = host }
 111
 112                 -- if more then one instance is found then generate submenu
 113                 if #instances > 1 then
 114                         local _, inst, idx2
 115                         for _, inst, idx2 in luci.util.vspairs(instances) do
 116                                 -- instance menu entry
 117                                 entry(
 118                                         { "admin", "statistics", "graph", plugin, inst },
 119                                         call("statistics_render"), inst, idx2
 120                                 ).query = { timespan = span , host = host }
 121                         end
 122                 end
 123         end
 124 end
 125
 126 function statistics_render()
 127
 128         require("luci.statistics.rrdtool")
 129         require("luci.template")
 130         require("luci.model.uci")
 131
 132         local vars  = luci.http.formvalue()
 133         local req   = luci.dispatcher.context.request
 134         local path  = luci.dispatcher.context.path
 135         local uci   = luci.model.uci.cursor()
 136         local spans = luci.util.split( uci:get( "luci_statistics", "collectd_rrdtool", "RRATimespans" ), "%s+", nil, true )
 137         local span  = vars.timespan or uci:get( "luci_statistics", "rrdtool", "default_timespan" ) or spans[1]
 138         local host  = vars.host     or uci:get( "luci_statistics", "collectd", "Hostname" ) or luci.sys.hostname()
 139         local opts = { host = vars.host }
 140         local graph = luci.statistics.rrdtool.Graph( luci.util.parse_units( span ), opts )
 141         local hosts = graph.tree:host_instances()
 142
 143         local is_index = false
 144         local i, p, inst, idx
 145
 146         -- deliver image
 147         if vars.img then
 148                 local l12 = require "luci.ltn12"
 149                 local png = io.open(graph.opts.imgpath .. "/" .. vars.img:gsub("%.+", "."), "r")
 150                 if png then
 151                         luci.http.prepare_content("image/png")
 152                         l12.pump.all(l12.source.file(png), luci.http.write)
 153                 end
 154                 return
 155         end
 156
 157         local plugin, instances
 158         local images = { }
 159
 160         -- find requested plugin and instance
 161     for i, p in ipairs( luci.dispatcher.context.path ) do
 162         if luci.dispatcher.context.path[i] == "graph" then
 163             plugin    = luci.dispatcher.context.path[i+1]
 164             instances = { luci.dispatcher.context.path[i+2] }
 165         end
 166     end
 167
 168         -- no instance requested, find all instances
 169         if #instances == 0 then
 170                 --instances = { graph.tree:plugin_instances( plugin )[1] }
 171                 instances = graph.tree:plugin_instances( plugin )
 172                 is_index = true
 173
 174         -- index instance requested
 175         elseif instances[1] == "-" then
 176                 instances[1] = ""
 177                 is_index = true
 178         end
 179
 180
 181         -- render graphs
 182         for i, inst in luci.util.vspairs( instances ) do
 183                 for i, img in luci.util.vspairs( graph:render( plugin, inst, is_index ) ) do
 184                         table.insert( images, graph:strippngpath( img ) )
 185                         images[images[#images]] = inst
 186                 end
 187         end
 188
 189         luci.template.render( "public_statistics/graph", {
 190                 images           = images,
 191                 plugin           = plugin,
 192                 timespans        = spans,
 193                 current_timespan = span,
 194                 hosts            = hosts,
 195                 current_host     = host,
 196                 is_index         = is_index
 197         } )
 198 end