conky-config/drawing/Network.lua

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local Text = require 'Text'
local Line = require 'Line'
local ScalePlot = require 'ScalePlot'
local Util = require 'Util'
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local __string_gmatch = string.gmatch
local _PLOT_SEC_BREAK_ = 20
local _PLOT_HEIGHT_ = 56
local network_label_function = function(bytes)
local new_unit = Util.get_unit(bytes)
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local converted = Util.convert_bytes(bytes, 'B', new_unit)
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local precision = 0
if converted < 10 then precision = 1 end
return Util.round_to_string(converted, precision)..' '..new_unit..'/s'
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end
local header = _G_Widget_.Header{
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x = _G_INIT_DATA_.CENTER_RIGHT_X,
y = _G_INIT_DATA_.TOP_Y,
width = _G_INIT_DATA_.SECTION_WIDTH,
header = 'NETWORK'
}
local _RIGHT_X_ = _G_INIT_DATA_.CENTER_RIGHT_X + _G_INIT_DATA_.SECTION_WIDTH
local dnload = {
label = _G_Widget_.Text{
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x = _G_INIT_DATA_.CENTER_RIGHT_X,
y = header.bottom_y,
text = 'Download',
},
speed = _G_Widget_.Text{
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x = _RIGHT_X_,
y = header.bottom_y,
x_align = 'right',
text_color = _G_Patterns_.BLUE
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},
plot = _G_Widget_.ScalePlot{
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x = _G_INIT_DATA_.CENTER_RIGHT_X,
y = header.bottom_y + _PLOT_SEC_BREAK_,
width = _G_INIT_DATA_.SECTION_WIDTH,
height = _PLOT_HEIGHT_,
y_label_func = network_label_function
}
}
local _UPLOAD_Y_ = header.bottom_y + _PLOT_HEIGHT_ + _PLOT_SEC_BREAK_ * 2
local upload = {
label = _G_Widget_.Text{
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x = _G_INIT_DATA_.CENTER_RIGHT_X,
y = _UPLOAD_Y_,
text = 'Upload',
},
speed = _G_Widget_.Text{
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x = _RIGHT_X_,
y = _UPLOAD_Y_,
x_align = 'right',
text_color = _G_Patterns_.BLUE
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},
plot = _G_Widget_.ScalePlot{
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x = _G_INIT_DATA_.CENTER_RIGHT_X,
y = _UPLOAD_Y_ + _PLOT_SEC_BREAK_,
width = _G_INIT_DATA_.SECTION_WIDTH,
height = _PLOT_HEIGHT_,
y_label_func = network_label_function
}
}
local interface_counters_tbl = {}
local update = function(cr, update_frequency)
local dspeed, uspeed = 0, 0
local rx_delta, tx_delta
-- iterate through the route file and filter on interfaces that are gateways (flag = 0003)
local iterator = __string_gmatch(Util.read_file('/proc/net/route'),
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'(%w+)%s+%w+%s+%w+%s+0003%s+')
for interface in iterator do
local interface_counters = interface_counters_tbl[interface]
if not interface_counters then
local rx_path = '/sys/class/net/'..interface..'/statistics/rx_bytes'
local tx_path = '/sys/class/net/'..interface..'/statistics/tx_bytes'
interface_counters = {
rx_path = rx_path,
tx_path = tx_path,
prev_rx_byte_cnt = Util.read_file(rx_path, nil, '*n'),
prev_tx_byte_cnt = Util.read_file(tx_path, nil, '*n'),
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}
interface_counters_tbl[interface] = interface_counters
end
local rx_byte_cnt = Util.read_file(interface_counters.rx_path, nil, '*n')
local tx_byte_cnt = Util.read_file(interface_counters.tx_path, nil, '*n')
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rx_delta = rx_byte_cnt - interface_counters.prev_rx_byte_cnt
tx_delta = tx_byte_cnt - interface_counters.prev_tx_byte_cnt
interface_counters.prev_rx_byte_cnt = rx_byte_cnt
interface_counters.prev_tx_byte_cnt = tx_byte_cnt
-- mask overflow
if rx_delta > 0 then dspeed = dspeed + rx_delta * update_frequency end
if tx_delta > 0 then uspeed = uspeed + tx_delta * update_frequency end
end
local dspeed_unit = Util.get_unit(dspeed)
local uspeed_unit = Util.get_unit(uspeed)
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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))
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ScalePlot.update(dnload.plot, cr, dspeed)
ScalePlot.update(upload.plot, cr, uspeed)
end
_PLOT_SEC_BREAK_ = nil
_PLOT_HEIGHT_ = nil
_RIGHT_X_ = nil
_UPLOAD_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