Hello All.

I am newbie in ejabberd.

Now I written my first mod and I want write log to debug/trace.

What is standart way to do this?

Hello,

You can include ejabberd.hrl in your module and use macros for that.
Here are the available macros for the development version:

?DEBUG(Format, Args)
?INFO_MSG(Format, Args)
?WARNING_MSG(Format, Args)
?ERROR_MSG(Format, Args)
?CRITICAL_MSG(Format, Args)

The Format and Args are the same time of parameters than io:format/2.

The stable version should only allow debug, info and error.

I hope this helps,

I must recompile all ejabber with uncomment line
-define(ejabberd_debug, true).
in ejabberd.hrl file

or

I have to include ejabberd.hrl in only my module?

Where I can see debug\trace messages? What I need run?

PS: I work under Windows.

You must include ejabberd.hrl in your module to use these macros.
You only need to uncomment the ‘-define(ejabberd_debug, true)’ if you wish to use ?DEBUG(Format, Args). The other macros are uneffected (note: I’m looking at v1.1.2).

Debug messages will appear in the erl shell.

ERROR_MSG/2 and INFO_MSG/2 uses the error_logger. These can appear in the erl shell or in ejabberd.log.

I don’t understand :-(((

I create my mod
---
-module(my).
-behaviour(gen_mod).
-export([start/2, stop/1]).
-include("ejabberd.hrl").

start(_Host, _Opts) -> ?INFO_MSG("Here i am start!!!!”, []).
stop(_Host) -> ?INFO_MSG("Here i am stop!!!!”, []).
---

compile this file
erlc my.erl

and move my.beam into
“C:\Program Files\ejabberd-1.1.3\lib\ejabberd-1.1.3\ebin\”

edit “C:\Program Files\ejabberd-1.1.3\conf\ejabberd.cfg”
---
...
% Used modules:
{modules,
[
...
{my, []},
...
...
---

start ejabberd, and debug after

bash ejabberdctl start
bash ejabberdctl debug

(after that I see http://vinnitu.dyndns.org/images/2007-04-13_115210.jpg )

but module not loaded because it is absent in list modules, why?

is my code incorrect?

As a quick note I would suggest starting from either mod_echo, mod_time or mod_version as these 3 represent very simple plugins.

so…
what I must to do to see debug messages in erl console?…

Depending on your configuration, the log messages will either go in the console. You can always see them in the ejabberd.log file.