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                 apcups          = _("APC UPS"),
  27                 conntrack       = _("Conntrack"),
  28                 contextswitch   = _("Context Switches"),
  29                 cpu                     = _("Processor"),
  30                 cpufreq         = _("CPU Frequency"),
  31                 csv                     = _("CSV Output"),
  32                 df                      = _("Disk Space Usage"),
  33                 disk            = _("Disk Usage"),
  34                 dns                     = _("DNS"),
  35                 email           = _("Email"),
  36                 entropy         = _("Entropy"),
  37                 exec            = _("Exec"),
  38                 interface       = _("Interfaces"),
  39                 iptables        = _("Firewall"),
  40                 irq                     = _("Interrupts"),
  41                 iwinfo          = _("Wireless"),
  42                 load            = _("System Load"),
  43                 memory          = _("Memory"),
  44                 netlink         = _("Netlink"),
  45                 network         = _("Network"),
  46                 nut                     = _("UPS"),
  47                 olsrd           = _("OLSRd"),
  48                 openvpn         = _("OpenVPN"),
  49                 ping            = _("Ping"),
  50                 processes       = _("Processes"),
  51                 rrdtool         = _("RRDTool"),
  52                 sensors     = _("Sensors"),
  53                 splash_leases = _("Splash Leases"),
  54                 tcpconns        = _("TCP Connections"),
  55                 thermal =       _("Thermal"),
  56                 unixsock        = _("UnixSock"),
  57                 uptime          = _("Uptime")
  58         }
  59
  60         -- our collectd menu
  61         local collectd_menu = {
  62                 output  = { "csv", "network", "rrdtool", "unixsock" },
  63                 general = { "apcups", "contextswitch", "cpu", "cpufreq", "df",
  64                         "disk", "email", "entropy", "exec", "irq", "load", "memory",
  65                         "nut", "processes", "sensors", "thermal", "uptime" },
  66                 network = { "conntrack", "dns", "interface", "iptables",
  67                         "netlink", "olsrd", "openvpn", "ping",
  68                         "splash_leases", "tcpconns", "iwinfo" }
  69         }
  70
  71         -- create toplevel menu nodes
  72         local st = entry({"admin", "statistics"}, template("admin_statistics/index"), _("Statistics"), 80)
  73         st.index = true
  74
  75         entry({"admin", "statistics", "collectd"}, cbi("luci_statistics/collectd"), _("Setup"), 20).subindex = true
  76
  77
  78         -- populate collectd plugin menu
  79         local index = 1
  80         for section, plugins in luci.util.kspairs( collectd_menu ) do
  81                 local e = entry(
  82                         { "admin", "statistics", "collectd", section },
  83                         firstchild(), labels["s_"..section], index * 10
  84                 )
  85
  86                 e.index = true
  87
  88                 for j, plugin in luci.util.vspairs( plugins ) do
  89                         _entry(
  90                                 { "admin", "statistics", "collectd", section, plugin },
  91                                 cbi("luci_statistics/" .. plugin ),
  92                                 labels[plugin] or plugin, j * 10
  93                         )
  94                 end
  95
  96                 index = index + 1
  97         end
  98
  99         -- output views
 100         local page = entry( { "admin", "statistics", "graph" }, template("admin_statistics/index"), _("Graphs"), 10)
 101               page.setuser  = "nobody"
 102               page.setgroup = "nogroup"
 103
 104         local vars = luci.http.formvalue(nil, true)
 105         local span = vars.timespan or nil
 106         local host = vars.host or nil
 107
 108         -- get rrd data tree
 109         local tree = luci.statistics.datatree.Instance(host)
 110
 111         local _, plugin, idx
 112         for _, plugin, idx in luci.util.vspairs( tree:plugins() ) do
 113
 114                 -- get plugin instances
 115                 local instances = tree:plugin_instances( plugin )
 116
 117                 -- plugin menu entry
 118                 entry(
 119                         { "admin", "statistics", "graph", plugin },
 120                         call("statistics_render"), labels[plugin], idx
 121                 ).query = { timespan = span , host = host }
 122
 123                 -- if more then one instance is found then generate submenu
 124                 if #instances > 1 then
 125                         local _, inst, idx2
 126                         for _, inst, idx2 in luci.util.vspairs(instances) do
 127                                 -- instance menu entry
 128                                 entry(
 129                                         { "admin", "statistics", "graph", plugin, inst },
 130                                         call("statistics_render"), inst, idx2
 131                                 ).query = { timespan = span , host = host }
 132                         end
 133                 end
 134         end
 135 end
 136
 137 function statistics_render()
 138
 139         require("luci.statistics.rrdtool")
 140         require("luci.template")
 141         require("luci.model.uci")
 142
 143         local vars  = luci.http.formvalue()
 144         local req   = luci.dispatcher.context.request
 145         local path  = luci.dispatcher.context.path
 146         local uci   = luci.model.uci.cursor()
 147         local spans = luci.util.split( uci:get( "luci_statistics", "collectd_rrdtool", "RRATimespans" ), "%s+", nil, true )
 148         local span  = vars.timespan or uci:get( "luci_statistics", "rrdtool", "default_timespan" ) or spans[1]
 149         local host  = vars.host     or uci:get( "luci_statistics", "collectd", "Hostname" ) or luci.sys.hostname()
 150         local opts = { host = vars.host }
 151         local graph = luci.statistics.rrdtool.Graph( luci.util.parse_units( span ), opts )
 152         local hosts = graph.tree:host_instances()
 153
 154         local is_index = false
 155         local i, p, inst, idx
 156
 157         -- deliver image
 158         if vars.img then
 159                 local l12 = require "luci.ltn12"
 160                 local png = io.open(graph.opts.imgpath .. "/" .. vars.img:gsub("%.+", "."), "r")
 161                 if png then
 162                         luci.http.prepare_content("image/png")
 163                         l12.pump.all(l12.source.file(png), luci.http.write)
 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 = (#instances > 1)
 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