Use rstats data for daily and monthly traffic

[serverwentdown]

To obtain the data, the following command can be issued:

killall -USR2 rstats  # This asks rstats to create a JS file at `/var/spool/rstats-history.js`

Afterwards, the file at /var/spool/rstats-history.js can be read. Example contents:

daily_history = [
[0x790418,0x8f9bea0,0x90b8374],[0x790419,0x16c6f68,0x32d5ca9],[0x79041a,0x1435521,0x17f6c63],[0x79041b,0x8c97980,0xa1a4b10],[0x79041c,0x15c8771,0x150b02c],[0x79041d,0x3a6c971,0x7c0bf19],[0x79041e,0xd20a7c,0x861438],[0x79041f,0xf88093,0x1382069],[0x790501,0xc68ff6f,0xbabb5c5],[0x790502,0x1e0102b,0xfe4535],[0x790503,0x232246b,0x2a3a73b],[0x790504,0x1012b81c,0x103627bc],[0x790505,0xbf7317d,0xe576fdb],[0x790506,0x849a390,0x7b82ecc],[0x790507,0x91bb84b,0x879d320],[0x790508,0x91f9a53,0xcad3723],[0x790509,0xf4e0808,0x199dfe29],[0x79050a,0x5e40a39,0x5641d04]];

monthly_history = [
[0x790400,0x1b40d89d,0x22a23b79],[0x790500,0x5c3c2610,0x69bc8e0e]];

(The web interface deletes this file after reading it)

The data is in the format [date, rx, tx] where:

• date is in 0xYYMMDD, where YY is years since 1900, MM is month starting from zero, and DD is the date of the month
  • Example: 0x790418 is 2021-05-24
• rx is bytes rxed for the day in KB
• tx is bytes txed for the day in KB

Alternative implementation

Instead, the statistics file at /var/lib/misc/rstats-history.gz can be read directly:

1. Decompress the file
2. Parse the raw bytes. They pretty much map to the above JavaScript almost exactly the same way (little endian), but the values are in bytes instead of kilobytes (/ 1024)

References

GPL_RT_AC1200GPlus_300438252272 / ... / release / src / router / rstats / rstats.c

[serverwentdown]

I'm willing to implement but first I want to get some comments from the community.

[kennedyshead]

I dag go for it :) it could be a nice addition to the package!