76 lines
2.5 KiB
Lua
76 lines
2.5 KiB
Lua
---------------------------------------------------
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-- Licensed under the GNU General Public License v2
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-- * (c) 2010, Adrian C. <anrxc@sysphere.org>
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-- * (c) 2009, Lucas de Vries <lucas@glacicle.com>
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---------------------------------------------------
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-- {{{ Grab environment
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local tonumber = tonumber
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local os = { time = os.time }
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local io = { lines = io.lines }
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local setmetatable = setmetatable
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local string = { match = string.match }
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local helpers = require("vicious.helpers")
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-- }}}
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-- Net: provides usage statistics for all network interfaces
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module("vicious.widgets.net")
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-- Initialize function tables
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local nets = {}
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-- Variable definitions
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local unit = { ["b"] = 1, ["kb"] = 1024,
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["mb"] = 1024^2, ["gb"] = 1024^3
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}
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-- {{{ Net widget type
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local function worker(format)
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local args = {}
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-- Get NET stats
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for line in io.lines("/proc/net/dev") do
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-- Match wmaster0 as well as rt0 (multiple leading spaces)
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local name = string.match(line, "^[%s]?[%s]?[%s]?[%s]?([%w]+):")
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if name ~= nil then
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-- Received bytes, first value after the name
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local recv = tonumber(string.match(line, ":[%s]*([%d]+)"))
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-- Transmited bytes, 7 fields from end of the line
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local send = tonumber(string.match(line,
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"([%d]+)%s+%d+%s+%d+%s+%d+%s+%d+%s+%d+%s+%d+%s+%d$"))
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helpers.uformat(args, name .. " rx", recv, unit)
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helpers.uformat(args, name .. " tx", send, unit)
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if nets[name] == nil then
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-- Default values on the first run
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nets[name] = {}
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helpers.uformat(args, name .. " down", 0, unit)
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helpers.uformat(args, name .. " up", 0, unit)
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nets[name].time = os.time()
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else -- Net stats are absolute, substract our last reading
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local interval = os.time() - nets[name].time > 0 and
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os.time() - nets[name].time or 1
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nets[name].time = os.time()
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local down = (recv - nets[name][1]) / interval
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local up = (send - nets[name][2]) / interval
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helpers.uformat(args, name .. " down", down, unit)
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helpers.uformat(args, name .. " up", up, unit)
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end
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-- Store totals
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nets[name][1] = recv
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nets[name][2] = send
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end
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end
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return args
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end
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-- }}}
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setmetatable(_M, { __call = function(_, ...) return worker(...) end })
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