Debugging the mongooseim for modules and hooks development

[awshelpdesk]

MongooseIM version: 2.1.1
Installed from: source at github
Erlang/OTP version: 20
Describe the issue.
I need to debug mongooseim modules and hooks. But when i do start mongooseim and then start ./mongooseimctl debug, i get following error when executing the command im(). in erlang shell.

Call to i:im/0 in application debugger failed.

Do let me know how can i rectify the issue as i am learning mongooseim developement.

Thanks

[GalaxyGorilla]

im() is a shortcut for debugger:start() and the debugger application is by default not included in erlang releases (iirc) by rebar3/relx. You can simply add the debugger app in the rebar.config and things are working as expected.

[awshelpdesk]

Thanks a lot GalaxyGorilla.

[shubham1164]

Hi GalaxyGorilla/awshelpdesk, can you tell me how to enable im(). on MongooseIM?

[GalaxyGorilla]

IIRC you just need to add debugger using export APPS=debugger when creating a release. So you need to build the release yourself.

[shubham1164]

You mean I need to add export APPS=debugger inside rebar.config like this?

Its not working.
I am using the Mongooseim from source code and compiling it on MAC using the below:
$ sudo ./rebar3 compile
$ sudo make rel
$ sudo /Users/MAC/Documents/Workspace/MongooseIm/MongooseIM/_build/prod/rel/mongooseim/bin/mongooseimctl live

Where should I use export APPS=debugger and should I use all the above steps after that to make it work?
I can confirm that im(). is working in the erl shell like:
$ erl
$ im(). //working here

[GalaxyGorilla]

Try this:

$ export APPS=debugger
$ ./rebar3 compile
$ make rel
$ /Users/MAC/Documents/Workspace/MongooseIm/MongooseIM/_build/prod/rel/mongooseim

However, I did not try this ...

EDIT: What is all the sudo stuff doing there?

[shubham1164]

No, still same, not working. I need to use sudo otherwise I get lots of Permission denied errors

[GalaxyGorilla]

Just figured it out, add debugger and wx like this in the rebar script:

-RequiredApps = fun() -> [mongooseim, inets, tools] end,
+RequiredApps = fun() -> [mongooseim, inets, tools, debugger, wx] end,

I am pretty sure you can also do this via env variables, but currently I have no time to figure this out.

[shubham1164]

You are awesome. It worked 👍