conky-config/drawing/network.lua

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local format = require 'format'
local i_o = require 'i_o'
local common = require 'common'
local geometry = require 'geometry'
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local sys = require 'sys'
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return function(update_freq)
local PLOT_SEC_BREAK = 20
local PLOT_HEIGHT = 56
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local INTERFACE_PATHS = sys.get_net_interface_paths()
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local get_bits = function(path)
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return i_o.read_file(path, nil, '*n') * 8
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end
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local read_interfaces = function()
local rx = 0
local tx = 0
for i = 1, #INTERFACE_PATHS do
local p = INTERFACE_PATHS[i]
rx = rx + get_bits(p.rx)
tx = tx + get_bits(p.tx)
end
return rx, tx
end
local init_rx_bits, init_tx_bits = read_interfaces()
local value_format_function = function(bits)
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local unit, value = format.convert_data_val(bits)
return format.precision_round_to_string(value, 3)..' '..unit..'b/s'
end
local make_plot = function(y, label, init)
return common.make_rate_timeseries(
geometry.CENTER_RIGHT_X,
y,
geometry.SECTION_WIDTH,
PLOT_HEIGHT,
value_format_function,
common.converted_y_label_format_generator('b'),
PLOT_SEC_BREAK,
label,
2,
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update_freq,
init
)
end
-----------------------------------------------------------------------------
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-- header
local header = common.make_header(
geometry.CENTER_RIGHT_X,
geometry.TOP_Y,
geometry.SECTION_WIDTH,
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'NETWORK'
)
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-----------------------------------------------------------------------------
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-- download plot
local rx = make_plot(header.bottom_y, 'Download', init_rx_bits)
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-----------------------------------------------------------------------------
-- upload plot
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local TX_Y = header.bottom_y + PLOT_HEIGHT + PLOT_SEC_BREAK * 2
local tx = make_plot(TX_Y, 'Upload', init_tx_bits)
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-----------------------------------------------------------------------------
-- main drawing functions
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local update = function()
local rx_bits, tx_bits = read_interfaces()
common.update_rate_timeseries(rx, rx_bits)
common.update_rate_timeseries(tx, tx_bits)
end
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local draw_static = function(cr)
common.draw_header(cr, header)
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common.tagged_scaled_timeseries_draw_static(rx, cr)
common.tagged_scaled_timeseries_draw_static(tx, cr)
end
local draw_dynamic = function(cr)
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common.tagged_scaled_timeseries_draw_dynamic(rx, cr)
common.tagged_scaled_timeseries_draw_dynamic(tx, cr)
end
return {static = draw_static, dynamic = draw_dynamic, update = update}
end