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_general       = _("General plugins"),
  24                 s_network       = _("Network plugins"),
  25
  26                 conntrack       = _("Conntrack"),
  27                 cpu                     = _("Processor"),
  28                 cpufreq         = _("CPU Frequency"),
  29                 csv                     = _("CSV Output"),
  30                 df                      = _("Disk Space Usage"),
  31                 disk            = _("Disk Usage"),
  32                 dns                     = _("DNS"),
  33                 email           = _("Email"),
  34                 entropy         = _("Entropy"),
  35                 exec            = _("Exec"),
  36                 interface       = _("Interfaces"),
  37                 iptables        = _("Firewall"),
  38                 irq                     = _("Interrupts"),
  39                 iwinfo          = _("Wireless"),
  40                 load            = _("System Load"),
  41                 memory          = _("Memory"),
  42                 netlink         = _("Netlink"),
  43                 network         = _("Network"),
  44                 nut                     = _("UPS"),
  45                 olsrd           = _("OLSRd"),
  46                 openvpn         = _("OpenVPN"),
  47                 ping            = _("Ping"),
  48                 processes       = _("Processes"),
  49                 rrdtool         = _("RRDTool"),
  50                 sensors     = _("Sensors"),
  51                 splash_leases = _("Splash Leases"),
  52                 tcpconns        = _("TCP Connections"),
  53                 unixsock        = _("UnixSock"),
  54                 uptime          = _("Uptime")
  55         }
  56
  57         -- our collectd menu
  58         local collectd_menu = {
  59                 output  = { "csv", "network", "rrdtool", "unixsock" },
  60                 general = { "cpu", "cpufreq", "df", "disk", "email", "entropy", "exec", "irq", "load", "memory", "nut", "processes", "sensors", "uptime" },
  61                 network = { "conntrack", "dns", "interface", "iptables", "netlink", "olsrd", "openvpn", "ping", "splash_leases", "tcpconns", "iwinfo" }
  62         }
  63
  64         -- create toplevel menu nodes
  65         local st = entry({"admin", "statistics"}, template("admin_statistics/index"), _("Statistics"), 80)
  66         st.index = true
  67
  68         entry({"admin", "statistics", "collectd"}, cbi("luci_statistics/collectd"), _("Setup"), 20).subindex = true
  69
  70
  71         -- populate collectd plugin menu
  72         local index = 1
  73         for section, plugins in luci.util.kspairs( collectd_menu ) do
  74                 local e = entry(
  75                         { "admin", "statistics", "collectd", section },
  76                         firstchild(), labels["s_"..section], index * 10
  77                 )
  78
  79                 e.index = true
  80
  81                 for j, plugin in luci.util.vspairs( plugins ) do
  82                         _entry(
  83                                 { "admin", "statistics", "collectd", section, plugin },
  84                                 cbi("luci_statistics/" .. plugin ),
  85                                 labels[plugin], j * 10
  86                         )
  87                 end
  88
  89                 index = index + 1
  90         end
  91
  92         -- output views
  93         local page = entry( { "admin", "statistics", "graph" }, template("admin_statistics/index"), _("Graphs"), 10)
  94               page.setuser  = "nobody"
  95               page.setgroup = "nogroup"
  96
  97         local vars = luci.http.formvalue(nil, true)
  98         local span = vars.timespan or nil
  99         local host = vars.host or nil
 100
 101         -- get rrd data tree
 102         local tree = luci.statistics.datatree.Instance(host)
 103
 104         local _, plugin, idx
 105         for _, plugin, idx in luci.util.vspairs( tree:plugins() ) do
 106
 107                 -- get plugin instances
 108                 local instances = tree:plugin_instances( plugin )
 109
 110                 -- plugin menu entry
 111                 entry(
 112                         { "admin", "statistics", "graph", plugin },
 113                         call("statistics_render"), labels[plugin], idx
 114                 ).query = { timespan = span , host = host }
 115
 116                 -- if more then one instance is found then generate submenu
 117                 if #instances > 1 then
 118                         local _, inst, idx2
 119                         for _, inst, idx2 in luci.util.vspairs(instances) do
 120                                 -- instance menu entry
 121                                 entry(
 122                                         { "admin", "statistics", "graph", plugin, inst },
 123                                         call("statistics_render"), inst, idx2
 124                                 ).query = { timespan = span , host = host }
 125                         end
 126                 end
 127         end
 128 end
 129
 130 function statistics_render()
 131
 132         require("luci.statistics.rrdtool")
 133         require("luci.template")
 134         require("luci.model.uci")
 135
 136         local vars  = luci.http.formvalue()
 137         local req   = luci.dispatcher.context.request
 138         local path  = luci.dispatcher.context.path
 139         local uci   = luci.model.uci.cursor()
 140         local spans = luci.util.split( uci:get( "luci_statistics", "collectd_rrdtool", "RRATimespans" ), "%s+", nil, true )
 141         local span  = vars.timespan or uci:get( "luci_statistics", "rrdtool", "default_timespan" ) or spans[1]
 142         local host  = vars.host     or uci:get( "luci_statistics", "collectd", "Hostname" ) or luci.sys.hostname()
 143         local opts = { host = vars.host }
 144         local graph = luci.statistics.rrdtool.Graph( luci.util.parse_units( span ), opts )
 145         local hosts = graph.tree:host_instances()
 146
 147         local is_index = false
 148         local i, p, inst, idx
 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                 end
 158                 return
 159         end
 160
 161         local plugin, instances
 162         local images = { }
 163
 164         -- find requested plugin and instance
 165     for i, p in ipairs( luci.dispatcher.context.path ) do
 166         if luci.dispatcher.context.path[i] == "graph" then
 167             plugin    = luci.dispatcher.context.path[i+1]
 168             instances = { luci.dispatcher.context.path[i+2] }
 169         end
 170     end
 171
 172         -- no instance requested, find all instances
 173         if #instances == 0 then
 174                 --instances = { graph.tree:plugin_instances( plugin )[1] }
 175                 instances = graph.tree:plugin_instances( plugin )
 176                 is_index = (#instances > 1)
 177
 178         -- index instance requested
 179         elseif instances[1] == "-" then
 180                 instances[1] = ""
 181                 is_index = true
 182         end
 183
 184
 185         -- render graphs
 186         for i, inst in luci.util.vspairs( instances ) do
 187                 for i, img in luci.util.vspairs( graph:render( plugin, inst, is_index ) ) do
 188                         table.insert( images, graph:strippngpath( img ) )
 189                         images[images[#images]] = inst
 190                 end
 191         end
 192
 193         luci.template.render( "public_statistics/graph", {
 194                 images           = images,
 195                 plugin           = plugin,
 196                 timespans        = spans,
 197                 current_timespan = span,
 198                 hosts            = hosts,
 199                 current_host     = host,
 200                 is_index         = is_index
 201         } )
 202 end