-- lain.widgets.net
local function worker(args)
- local net = { last_t = 0, last_r = 0 }
+ local net = { last_t = 0, last_r = 0, devices = {} }
function net.get_first_device()
local ws = helpers.read_pipe("ip link show | cut -d' ' -f2,9")
end
function update()
+ -- This check is required to ensure we keep looking for one device if
+ -- none is found by net.get_first_device() at startup (i.e. iftable = {})
+ if next(iftable) == nil then
+ iftable = net.get_first_device()
+ end
+
-- These are the totals over all specified interfaces
net_now = {
+ -- New api - Current state of requested devices
+ devices = {},
+ -- Bytes since last iteration
sent = 0,
received = 0
}
for i, dev in ipairs(iftable) do
local dev_now = {}
- local dev_before = net_now[dev] or net
+ local dev_before = net.devices[dev] or { last_t = 0, last_r = 0 }
dev_now.carrier = helpers.first_line(string.format('/sys/class/net/%s/carrier', dev)) or '0'
dev_now.state = helpers.first_line(string.format('/sys/class/net/%s/operstate', dev)) or 'down'
local now_t = tonumber(helpers.first_line(string.format('/sys/class/net/%s/statistics/tx_bytes', dev)) or 0)
local now_r = tonumber(helpers.first_line(string.format('/sys/class/net/%s/statistics/rx_bytes', dev)) or 0)
- if now_t ~= dev_before.last_t or now_r ~= dev_before.last_r then
- dev_now.sent = (now_t - (dev_before.last_t or 0)) / timeout / units
- net_now.sent = net_now.sent + dev_now.sent
- dev_now.sent = string.gsub(string.format('%.1f', dev_now.sent), ',', '.')
- dev_now.received = (now_r - (dev_before.last_r or 0)) / timeout / units
- net_now.received = net_now.received + dev_now.received
- dev_now.received = string.gsub(string.format('%.1f', dev_now.received), ',', '.')
- end
+ dev_now.sent = (now_t - dev_before.last_t) / timeout / units
+ dev_now.received = (now_r - dev_before.last_r) / timeout / units
+
+ net_now.sent = net_now.sent + dev_now.sent
+ net_now.received = net_now.received + dev_now.received
+
+ dev_now.sent = string.gsub(string.format('%.1f', dev_now.sent), ',', '.')
+ dev_now.received = string.gsub(string.format('%.1f', dev_now.received), ',', '.')
+
+ dev_now.last_t = now_t
+ dev_now.last_r = now_r
+
+ -- This will become dev_before in the next update/iteration
+ net.devices[dev] = dev_now
total_t = total_t + now_t
total_r = total_r + now_r
- net_now[dev] = dev_now
-
+ -- Notify only once when connection is loss
if string.match(dev_now.carrier, "0") and notify == "on" and helpers.get_map(dev) then
naughty.notify({
title = dev,
screen = screen
})
helpers.set_map(dev, false)
- else
+ elseif string.match(dev_now.carrier, "1") then
helpers.set_map(dev, true)
end
+
+ -- Old api compatibility
+ net_now.carrier = dev_now.carrier
+ net_now.state = dev_now.state
+ -- And new api
+ net_now.devices[dev] = dev_now
+ -- With the new api new_now.sent and net_now.received will be the
+ -- totals across all specified devices
+
end
if total_t ~= net.last_t or total_r ~= net.last_r then
+ -- Convert to a string to round the digits after the float point
net_now.sent = string.gsub(string.format('%.1f', net_now.sent), ',', '.')
net_now.received = string.gsub(string.format('%.1f', net_now.received), ',', '.')