conky-config/module/Network.lua

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2016-08-11 23:25:56 -04:00
local Widget = require 'Widget'
local Text = require 'Text'
local Line = require 'Line'
local ScalePlot = require 'ScalePlot'
local util = require 'util'
local schema = require 'default_patterns'
local _STRING_GMATCH = string.gmatch
local _IO_POPEN = io.popen
local MODULE_Y = 145
--construction params
local PLOT_SEC_BREAK = 20
local PLOT_HEIGHT = 56
local SYSFS_NET = '/sys/class/net/'
local STATS_RX = '/statistics/rx_bytes'
local STATS_TX = '/statistics/tx_bytes'
local __network_label_function = function(bytes)
local new_unit = util.get_unit(bytes)
local converted = util.convert_bytes(bytes, 'B', new_unit)
local precision = 0
if converted < 10 then precision = 1 end
return util.round_to_string(converted, precision)..' '..new_unit..'/s'
end
local header = Widget.Header{
x = CONSTRUCTION_GLOBAL.LEFT_X,
y = MODULE_Y,
width = CONSTRUCTION_GLOBAL.SIDE_WIDTH,
header = "NETWORK"
}
local RIGHT_X = CONSTRUCTION_GLOBAL.LEFT_X + CONSTRUCTION_GLOBAL.SIDE_WIDTH
local DOWNLOAD_PLOT_Y = header.bottom_y + PLOT_SEC_BREAK
local dnload = {
label = Widget.Text{
x = CONSTRUCTION_GLOBAL.LEFT_X,
y = header.bottom_y,
text = 'Download',
},
speed = Widget.Text{
x = RIGHT_X,
y = header.bottom_y,
x_align = 'right',
text_color = schema.blue
},
plot = Widget.ScalePlot{
x = CONSTRUCTION_GLOBAL.LEFT_X,
y = DOWNLOAD_PLOT_Y,
width = CONSTRUCTION_GLOBAL.SIDE_WIDTH,
height = PLOT_HEIGHT,
y_label_func = __network_label_function
}
}
local UPLOAD_Y = DOWNLOAD_PLOT_Y + PLOT_HEIGHT + PLOT_SEC_BREAK
local UPLOAD_PLOT_Y = UPLOAD_Y + PLOT_SEC_BREAK
local upload = {
label = Widget.Text{
x = CONSTRUCTION_GLOBAL.LEFT_X,
y = UPLOAD_Y,
text = 'Upload',
},
speed = Widget.Text{
x = RIGHT_X,
y = UPLOAD_Y,
x_align = 'right',
text_color = schema.blue
},
plot = Widget.ScalePlot{
x = CONSTRUCTION_GLOBAL.LEFT_X,
y = UPLOAD_PLOT_Y,
width = CONSTRUCTION_GLOBAL.SIDE_WIDTH,
height = PLOT_HEIGHT,
y_label_func = __network_label_function
}
}
local interfaces = {}
local __add_interface = function(iface)
local rx_path = SYSFS_NET..iface..STATS_RX
local tx_path = SYSFS_NET..iface..STATS_TX
interfaces[iface] = {
rx_path = rx_path,
tx_path = tx_path,
rx_cumulative_bytes = 0,
tx_cumulative_bytes = 0,
prev_rx_cumulative_bytes = util.read_file(rx_path, nil, '*n'),
prev_tx_cumulative_bytes = util.read_file(tx_path, nil, '*n'),
}
end
for iface in _IO_POPEN('ls -1 '..SYSFS_NET):lines() do
__add_interface(iface)
end
local __update = function(cr, update_frequency)
local dspeed, uspeed = 0, 0
local glob = util.execute_cmd('ip route show')
local rx_bps, tx_bps
for iface in _STRING_GMATCH(glob, 'default via %d+%.%d+%.%d+%.%d+ dev (%w+) ') do
local current_iface = interfaces[iface]
if not current_iface then
__add_interface(iface)
current_iface = interfaces[iface]
end
local new_rx_cumulative_bytes = util.read_file(current_iface.rx_path, nil, '*n')
local new_tx_cumulative_bytes = util.read_file(current_iface.tx_path, nil, '*n')
rx_bps = (new_rx_cumulative_bytes - current_iface.prev_rx_cumulative_bytes) * update_frequency
tx_bps = (new_tx_cumulative_bytes - current_iface.prev_tx_cumulative_bytes) * update_frequency
current_iface.prev_rx_cumulative_bytes = new_rx_cumulative_bytes
current_iface.prev_tx_cumulative_bytes = new_tx_cumulative_bytes
--mask overflow
if rx_bps < 0 then rx_bps = 0 end
if tx_bps < 0 then tx_bps = 0 end
dspeed = dspeed + rx_bps
uspeed = uspeed + tx_bps
end
local dspeed_unit = util.get_unit(dspeed)
local uspeed_unit = util.get_unit(uspeed)
dnload.speed.append_end = ' '..dspeed_unit..'/s'
upload.speed.append_end = ' '..uspeed_unit..'/s'
Text.set(dnload.speed, cr, util.precision_convert_bytes(dspeed, 'B', dspeed_unit, 3))
Text.set(upload.speed, cr, util.precision_convert_bytes(uspeed, 'B', uspeed_unit, 3))
ScalePlot.update(dnload.plot, cr, dspeed)
ScalePlot.update(upload.plot, cr, uspeed)
end
Widget = nil
schema = nil
MODULE_Y = nil
PLOT_SEC_BREAK = nil
PLOT_HEIGHT = nil
RIGHT_X = nil
DOWNLOAD_PLOT_Y = nil
UPLOAD_Y = nil
UPLOAD_PLOT_Y = nil
local draw = function(cr, current_interface, update_frequency)
__update(cr, update_frequency)
if current_interface == 0 then
Text.draw(header.text, cr)
Line.draw(header.underline, cr)
Text.draw(dnload.label, cr)
Text.draw(dnload.speed, cr)
ScalePlot.draw(dnload.plot, cr)
Text.draw(upload.label, cr)
Text.draw(upload.speed, cr)
ScalePlot.draw(upload.plot, cr)
end
end
return draw