conky-config/drawing/Network.lua

129 lines
4.0 KiB
Lua

local Util = require 'Util'
local Common = require 'Common'
local Geometry = require 'Geometry'
return function(update_freq)
local PLOT_SEC_BREAK = 20
local PLOT_HEIGHT = 56
local __string_gmatch = string.gmatch
local __math_floor = math.floor
-----------------------------------------------------------------------------
-- header
local header = Common.Header(
Geometry.CENTER_RIGHT_X,
Geometry.TOP_Y,
Geometry.SECTION_WIDTH,
'NETWORK'
)
-----------------------------------------------------------------------------
-- download plot
local network_label_function = function(bits)
local new_unit, new_value = Util.convert_data_val(bits)
return __math_floor(new_value)..' '..new_unit..'b/s'
end
local value_format_function = function(bits)
local unit, value = Util.convert_data_val(bits)
return Util.precision_round_to_string(value, 3)..' '..unit..'b/s'
end
local build_plot = function(y, label)
return Common.initLabeledScalePlot(
Geometry.CENTER_RIGHT_X,
y,
Geometry.SECTION_WIDTH,
PLOT_HEIGHT,
value_format_function,
network_label_function,
PLOT_SEC_BREAK,
label,
2,
update_freq
)
end
local dnload = build_plot(header.bottom_y, 'Download')
-----------------------------------------------------------------------------
-- upload plot
local upload = build_plot(
header.bottom_y + PLOT_HEIGHT + PLOT_SEC_BREAK * 2,
'Upload'
)
-----------------------------------------------------------------------------
-- update function
local get_bits = function(path)
return Util.read_file(path, nil, '*n') * 8
end
local interface_counters_tbl = {}
local update = function(cr)
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'),
'(%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 = get_bits(rx_path, nil, '*n'),
prev_tx_byte_cnt = get_bits(tx_path, nil, '*n'),
}
interface_counters_tbl[interface] = interface_counters
end
local rx_byte_cnt = get_bits(interface_counters.rx_path, nil, '*n')
local tx_byte_cnt = get_bits(interface_counters.tx_path, nil, '*n')
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_freq end
if tx_delta > 0 then uspeed = uspeed + tx_delta * update_freq end
end
Common.annotated_scale_plot_set(dnload, cr, dspeed)
Common.annotated_scale_plot_set(upload, cr, uspeed)
end
-----------------------------------------------------------------------------
-- main drawing functions
local draw_static = function(cr)
Common.drawHeader(cr, header)
Common.annotated_scale_plot_draw_static(dnload, cr)
Common.annotated_scale_plot_draw_static(upload, cr)
end
local draw_dynamic = function(cr)
update(cr)
Common.annotated_scale_plot_draw_dynamic(dnload, cr)
Common.annotated_scale_plot_draw_dynamic(upload, cr)
end
return {static = draw_static, dynamic = draw_dynamic}
end