Software / code / prosody-modules
Annotate
mod_pinger/mod_pinger.lua @ 4877:adc6241e5d16
mod_measure_process: Report the enforced limit
The soft limit is what the kernel actually enforces, while the hard
limit is is how far you can change the soft limit without privileges.
Unless the process dynamically adjusts the soft limit, knowing the hard
limit is not as useful as knowing the soft limit.
Reporting the soft limit and the number of in-use FDs allows placing
alerts on expressions like 'process_open_fds / process_max_fds >= 0.95'
| author | Kim Alvefur <zash@zash.se> |
|---|---|
| date | Tue, 18 Jan 2022 18:55:20 +0100 |
| parent | 3113:8298b06e6603 |
| rev | line source |
|---|---|
| 2034 | 1 local new_watchdog = require "util.watchdog".new; |
| 2 local filters = require "util.filters"; | |
| 3 local st = require "util.stanza"; | |
| 4 | |
| 5 local idle_timeout = module:get_option_number("c2s_idle_timeout", 300); | |
| 6 local ping_timeout = module:get_option_number("c2s_ping_timeout", 30); | |
| 7 | |
| 8 function update_watchdog(data, session) | |
|
3113
8298b06e6603
mod_pinger: work around updates on stale sessions
Georg Lukas <georg@op-co.de>
parents:
3103
diff
changeset
|
9 if session.idle_watchdog then |
|
8298b06e6603
mod_pinger: work around updates on stale sessions
Georg Lukas <georg@op-co.de>
parents:
3103
diff
changeset
|
10 session.idle_watchdog:reset(); |
|
8298b06e6603
mod_pinger: work around updates on stale sessions
Georg Lukas <georg@op-co.de>
parents:
3103
diff
changeset
|
11 session.idle_pinged = nil; |
|
8298b06e6603
mod_pinger: work around updates on stale sessions
Georg Lukas <georg@op-co.de>
parents:
3103
diff
changeset
|
12 end |
| 2034 | 13 return data; |
| 14 end | |
| 15 | |
| 16 function check_session(watchdog) | |
| 17 local session = watchdog.session; | |
|
3103
5bf79bb3cf7e
Neuter 0198 from mod_pinger, fix #712
Georg Lukas <georg@op-co.de>
parents:
2674
diff
changeset
|
18 if session.smacks then |
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5bf79bb3cf7e
Neuter 0198 from mod_pinger, fix #712
Georg Lukas <georg@op-co.de>
parents:
2674
diff
changeset
|
19 unwatch_session(session); |
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5bf79bb3cf7e
Neuter 0198 from mod_pinger, fix #712
Georg Lukas <georg@op-co.de>
parents:
2674
diff
changeset
|
20 return; |
|
5bf79bb3cf7e
Neuter 0198 from mod_pinger, fix #712
Georg Lukas <georg@op-co.de>
parents:
2674
diff
changeset
|
21 end |
| 2034 | 22 if not session.idle_pinged then |
| 23 session.idle_pinged = true; | |
|
3103
5bf79bb3cf7e
Neuter 0198 from mod_pinger, fix #712
Georg Lukas <georg@op-co.de>
parents:
2674
diff
changeset
|
24 session.send(st.iq({ type = "get", from = module.host, id = "idle-check" }) |
|
5bf79bb3cf7e
Neuter 0198 from mod_pinger, fix #712
Georg Lukas <georg@op-co.de>
parents:
2674
diff
changeset
|
25 :tag("ping", { xmlns = "urn:xmpp:ping" })); |
| 2034 | 26 return ping_timeout; -- Call us again after ping_timeout |
| 27 else | |
| 28 module:log("info", "Client %q silent for too long, closing...", session.full_jid); | |
| 29 session:close("connection-timeout"); | |
| 30 end | |
| 31 end | |
| 32 | |
| 33 | |
| 34 function watch_session(session) | |
| 35 if not session.idle_watchdog | |
| 36 and not session.requests then -- Don't watch BOSH connections (BOSH already has timeouts) | |
| 37 session.idle_watchdog = new_watchdog(idle_timeout, check_session); | |
| 38 session.idle_watchdog.session = session; | |
| 39 filters.add_filter(session, "bytes/in", update_watchdog); | |
| 40 end | |
| 41 end | |
| 42 | |
| 43 function unwatch_session(session) | |
| 44 if session.idle_watchdog then | |
|
3103
5bf79bb3cf7e
Neuter 0198 from mod_pinger, fix #712
Georg Lukas <georg@op-co.de>
parents:
2674
diff
changeset
|
45 filters.remove_filter(session, "bytes/in", update_watchdog); |
| 2034 | 46 session.idle_watchdog:cancel(); |
| 47 session.idle_watchdog = nil; | |
| 48 end | |
| 49 end | |
| 50 | |
| 51 module:hook("resource-bind", function (event) watch_session(event.session); end); | |
| 52 module:hook("resource-unbind", function (event) unwatch_session(event.session); end); |
