125 lines
3.4 KiB
Lua
125 lines
3.4 KiB
Lua
local M = {}
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local Util = require 'Util'
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local Common = require 'Common'
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local __string_gmatch = string.gmatch
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local _PLOT_SEC_BREAK_ = 20
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local _PLOT_HEIGHT_ = 56
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local network_label_function = function(bits)
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local new_unit, new_value = Util.convert_data_val(bits)
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local precision = new_value < 10 and 1 or 0
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return Util.round_to_string(new_value, precision)..' '..new_unit..'b/s'
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end
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local header = Common.Header(
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_G_INIT_DATA_.CENTER_RIGHT_X,
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_G_INIT_DATA_.TOP_Y,
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_G_INIT_DATA_.SECTION_WIDTH,
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'NETWORK'
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)
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local dnload = Common.initLabeledScalePlot(
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_G_INIT_DATA_.CENTER_RIGHT_X,
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header.bottom_y,
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_G_INIT_DATA_.SECTION_WIDTH,
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_PLOT_HEIGHT_,
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network_label_function,
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_PLOT_SEC_BREAK_,
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'Download'
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)
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local upload = Common.initLabeledScalePlot(
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_G_INIT_DATA_.CENTER_RIGHT_X,
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header.bottom_y + _PLOT_HEIGHT_ + _PLOT_SEC_BREAK_ * 2,
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_G_INIT_DATA_.SECTION_WIDTH,
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_PLOT_HEIGHT_,
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network_label_function,
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_PLOT_SEC_BREAK_,
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'Upload'
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)
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local interface_counters_tbl = {}
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local get_bits = function(path)
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return Util.read_file(path, nil, '*n') * 8
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end
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local update = function(cr, update_frequency)
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local dspeed, uspeed = 0, 0
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local rx_delta, tx_delta
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-- iterate through the route file and filter on interfaces that are gateways (flag = 0003)
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local iterator = __string_gmatch(Util.read_file('/proc/net/route'),
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'(%w+)%s+%w+%s+%w+%s+0003%s+')
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for interface in iterator do
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local interface_counters = interface_counters_tbl[interface]
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if not interface_counters then
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local rx_path = '/sys/class/net/'..interface..'/statistics/rx_bytes'
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local tx_path = '/sys/class/net/'..interface..'/statistics/tx_bytes'
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interface_counters = {
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rx_path = rx_path,
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tx_path = tx_path,
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prev_rx_byte_cnt = get_bits(rx_path, nil, '*n'),
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prev_tx_byte_cnt = get_bits(tx_path, nil, '*n'),
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}
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interface_counters_tbl[interface] = interface_counters
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end
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local rx_byte_cnt = get_bits(interface_counters.rx_path, nil, '*n')
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local tx_byte_cnt = get_bits(interface_counters.tx_path, nil, '*n')
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rx_delta = rx_byte_cnt - interface_counters.prev_rx_byte_cnt
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tx_delta = tx_byte_cnt - interface_counters.prev_tx_byte_cnt
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interface_counters.prev_rx_byte_cnt = rx_byte_cnt
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interface_counters.prev_tx_byte_cnt = tx_byte_cnt
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-- mask overflow
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if rx_delta > 0 then dspeed = dspeed + rx_delta * update_frequency end
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if tx_delta > 0 then uspeed = uspeed + tx_delta * update_frequency end
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end
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local dspeed_unit, dspeed_value = Util.convert_data_val(dspeed)
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local uspeed_unit, uspeed_value = Util.convert_data_val(uspeed)
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Common.annotated_scale_plot_set(
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dnload,
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cr,
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Util.precision_round_to_string(dspeed_value, 3)..' '..dspeed_unit..'b/s',
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dspeed
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)
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Common.annotated_scale_plot_set(
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upload,
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cr,
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Util.precision_round_to_string(uspeed_value, 3)..' '..uspeed_unit..'b/s',
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uspeed
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)
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end
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_PLOT_SEC_BREAK_ = nil
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_PLOT_HEIGHT_ = nil
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local draw_static = function(cr)
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Common.drawHeader(cr, header)
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Common.annotated_scale_plot_draw_static(dnload, cr)
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Common.annotated_scale_plot_draw_static(upload, cr)
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end
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local draw_dynamic = function(cr, update_frequency)
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update(cr, update_frequency)
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Common.annotated_scale_plot_draw_dynamic(dnload, cr)
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Common.annotated_scale_plot_draw_dynamic(upload, cr)
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end
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M.draw_static = draw_static
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M.draw_dynamic = draw_dynamic
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return M
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