Mercurial > prosody-modules
annotate mod_log_json/mod_log_json.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 |
| parents | 4356088ad675 |
| children | 807007913f67 |
| rev | line source |
|---|---|
| 3732 | 1 local pack = require "util.table".pack; |
| 2 local json = require "util.json"; | |
| 3 local array = require "util.array"; | |
| 4 local datetime = require "util.datetime".datetime; | |
| 3746 | 5 local socket = require "socket"; |
| 3732 | 6 |
| 7 module:set_global(); | |
| 8 | |
| 9 local function sink_maker(config) | |
| 3746 | 10 local send = function () end |
| 11 if config.filename then | |
| 12 local logfile = io.open(config.filename, "a+"); | |
| 13 logfile:setvbuf("no"); | |
| 14 function send(payload) | |
| 15 logfile:write(payload, "\n"); | |
| 16 end | |
| 17 elseif config.udp_host and config.udp_port then | |
| 18 local conn = socket.udp(); | |
|
3748
27abf3b6819a
mod_log_json: Use correct method to specify remote endpoint
Kim Alvefur <zash@zash.se>
parents:
3747
diff
changeset
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19 conn:setpeername(config.udp_host, config.udp_port); |
| 3746 | 20 function send(payload) |
| 21 conn:send(payload); | |
| 22 end | |
| 23 end | |
|
4462
4356088ad675
mod_log_json: allow logging of formatted message
Jonas Schäfer <jonas@wielicki.name>
parents:
3758
diff
changeset
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24 local format = require "util.format".format; |
|
4356088ad675
mod_log_json: allow logging of formatted message
Jonas Schäfer <jonas@wielicki.name>
parents:
3758
diff
changeset
|
25 local do_format = config.formatted_as or false; |
| 3732 | 26 return function (source, level, message, ...) |
| 27 local args = pack(...); | |
| 28 for i = 1, args.n do | |
| 29 if args[i] == nil then | |
| 30 args[i] = json.null; | |
| 31 elseif type(args[i]) ~= "string" or type(args[i]) ~= "number" then | |
| 32 args[i] = tostring(args[i]); | |
| 33 end | |
| 34 end | |
| 35 args.n = nil; | |
| 36 local payload = { | |
| 37 datetime = datetime(), | |
| 38 source = source, | |
| 39 level = level, | |
| 40 message = message, | |
| 41 args = array(args); | |
| 42 }; | |
|
4462
4356088ad675
mod_log_json: allow logging of formatted message
Jonas Schäfer <jonas@wielicki.name>
parents:
3758
diff
changeset
|
43 if do_format then |
|
4356088ad675
mod_log_json: allow logging of formatted message
Jonas Schäfer <jonas@wielicki.name>
parents:
3758
diff
changeset
|
44 payload[do_format] = format(message, ...) |
|
4356088ad675
mod_log_json: allow logging of formatted message
Jonas Schäfer <jonas@wielicki.name>
parents:
3758
diff
changeset
|
45 end |
| 3746 | 46 send(json.encode(payload)); |
| 3732 | 47 end |
| 48 end | |
| 49 | |
|
3758
900ea02ab00b
mod_log_json: Deregister log sink on unload
Kim Alvefur <zash@zash.se>
parents:
3748
diff
changeset
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50 function module.unload() |
|
900ea02ab00b
mod_log_json: Deregister log sink on unload
Kim Alvefur <zash@zash.se>
parents:
3748
diff
changeset
|
51 -- deregister |
|
900ea02ab00b
mod_log_json: Deregister log sink on unload
Kim Alvefur <zash@zash.se>
parents:
3748
diff
changeset
|
52 require"core.loggingmanager".register_sink_type("json", nil); |
|
900ea02ab00b
mod_log_json: Deregister log sink on unload
Kim Alvefur <zash@zash.se>
parents:
3748
diff
changeset
|
53 end |
|
900ea02ab00b
mod_log_json: Deregister log sink on unload
Kim Alvefur <zash@zash.se>
parents:
3748
diff
changeset
|
54 |
| 3732 | 55 require"core.loggingmanager".register_sink_type("json", sink_maker); |