Mercurial > prosody-modules
annotate mod_measure_cpu/mod_measure_cpu.lua @ 4651:8231774f5bfd
mod_cloud_notify_encrypted: Ensure body substring remains valid UTF-8
The `body:sub()` call risks splitting the string in the middle of a
multi-byte UTF-8 sequence. This should have been caught by util.stanza
validation, but that would have caused some havoc, at the very least causing
the notification to not be sent.
There have been no reports of this happening. Likely because this module
isn't widely deployed among users with languages that use many longer UTF-8
sequences.
The util.encodings.utf8.valid() function is O(n) where only the last
sequence really needs to be checked, but it's in C and expected to be fast.
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Sun, 22 Aug 2021 13:22:59 +0200 |
parents | 2af0301af734 |
children |
rev | line source |
---|---|
1677
2a4c632a24cb
mod_measure_cpu: Collect CPU usage statistic
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
1 module:set_global(); |
2a4c632a24cb
mod_measure_cpu: Collect CPU usage statistic
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
2 |
2a4c632a24cb
mod_measure_cpu: Collect CPU usage statistic
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
3 local measure = require"core.statsmanager".measure; |
2a4c632a24cb
mod_measure_cpu: Collect CPU usage statistic
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
4 local mt = require"util.multitable"; |
2a4c632a24cb
mod_measure_cpu: Collect CPU usage statistic
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
5 local get_time = require "socket".gettime; |
2a4c632a24cb
mod_measure_cpu: Collect CPU usage statistic
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
6 local get_clock = os.clock; |
2a4c632a24cb
mod_measure_cpu: Collect CPU usage statistic
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
7 |
2a4c632a24cb
mod_measure_cpu: Collect CPU usage statistic
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
8 local measure_cpu_now = measure("amount", "cpu.percent"); -- Current percentage |
4039
2af0301af734
mod_measure_cpu: Specify units of total CPU time as seconds
Kim Alvefur <zash@zash.se>
parents:
3444
diff
changeset
|
9 local measure_cpu_total = measure("counter", "cpu.clock", { units = "seconds" }); |
1677
2a4c632a24cb
mod_measure_cpu: Collect CPU usage statistic
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
10 |
2a4c632a24cb
mod_measure_cpu: Collect CPU usage statistic
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
11 local last_cpu_wall, last_cpu_clock; |
2a4c632a24cb
mod_measure_cpu: Collect CPU usage statistic
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
12 module:hook("stats-update", function () |
2a4c632a24cb
mod_measure_cpu: Collect CPU usage statistic
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
13 local new_wall, new_clock = get_time(), get_clock(); |
2a4c632a24cb
mod_measure_cpu: Collect CPU usage statistic
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
14 local pc = 0; |
2a4c632a24cb
mod_measure_cpu: Collect CPU usage statistic
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
15 if last_cpu_wall then |
2a4c632a24cb
mod_measure_cpu: Collect CPU usage statistic
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
16 pc = 100/((new_wall-last_cpu_wall)/(new_clock-last_cpu_clock)); |
2a4c632a24cb
mod_measure_cpu: Collect CPU usage statistic
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
17 end |
2a4c632a24cb
mod_measure_cpu: Collect CPU usage statistic
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
18 last_cpu_wall, last_cpu_clock = new_wall, new_clock; |
2a4c632a24cb
mod_measure_cpu: Collect CPU usage statistic
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
19 |
2a4c632a24cb
mod_measure_cpu: Collect CPU usage statistic
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
20 measure_cpu_now(pc); |
3444
e0fb97f47212
mod_measure_cpu: Rename counter metric to avoid name clash (thanks pep.)
Kim Alvefur <zash@zash.se>
parents:
3431
diff
changeset
|
21 measure_cpu_total(new_clock); |
1677
2a4c632a24cb
mod_measure_cpu: Collect CPU usage statistic
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
22 end); |
2a4c632a24cb
mod_measure_cpu: Collect CPU usage statistic
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
23 |
2a4c632a24cb
mod_measure_cpu: Collect CPU usage statistic
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
24 -- Some metadata for mod_munin |
2a4c632a24cb
mod_measure_cpu: Collect CPU usage statistic
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
25 local munin_meta = mt.new(); munin_meta.data = module:shared"munin/meta"; |
2a4c632a24cb
mod_measure_cpu: Collect CPU usage statistic
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
26 local key = "global_cpu_amount"; |
2a4c632a24cb
mod_measure_cpu: Collect CPU usage statistic
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
27 |
2a4c632a24cb
mod_measure_cpu: Collect CPU usage statistic
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
28 munin_meta:set(key, "", "graph_args", "--base 1000 -r --lower-limit 0 --upper-limit 100"); |
2a4c632a24cb
mod_measure_cpu: Collect CPU usage statistic
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
29 munin_meta:set(key, "", "graph_title", "Prosody CPU Usage"); |
2a4c632a24cb
mod_measure_cpu: Collect CPU usage statistic
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
30 munin_meta:set(key, "", "graph_vlabel", "%"); |
2a4c632a24cb
mod_measure_cpu: Collect CPU usage statistic
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
31 munin_meta:set(key, "", "graph_category", "cpu"); |
2a4c632a24cb
mod_measure_cpu: Collect CPU usage statistic
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
32 |
2a4c632a24cb
mod_measure_cpu: Collect CPU usage statistic
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
33 munin_meta:set(key, "percent", "label", "CPU Usage"); |
2a4c632a24cb
mod_measure_cpu: Collect CPU usage statistic
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
34 munin_meta:set(key, "percent", "min", "0"); |
2a4c632a24cb
mod_measure_cpu: Collect CPU usage statistic
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
35 |