c# LSP: Viewing OmniSharp log file

[mcraveiro]

Hi LSP devs,

Thanks for a great mode. As per conversation in the gitter channel:

I've been using it on windows for c# and it works quite well. One question though, is there a way to see the OmniSharp log? I can see the log of messages and replies sent to OmniSharp, but I haven't found a way to see the server log itself, like I could with omnisharp-emacs.

the problem I am trying to troubleshoot in particular is the case where I make changes to a csproj file but it seems OmniSharp does not reload the project. This was working for omnisharp-emacs so I suspect I must have broken something, but without the log its not easy to figure out what.

@yyoncho suggested that @razzmatazz may know the answer to this question.

Many thanks for all your hard work.

Marco

[razzmatazz]

Hi @mcraveiro. I believe, the log level is configurable but we don't have configuration for it in lsp-csharp.el (yet). I have not personally tried configuring it (or if it actually works) but..

The code for setting configuration level is there:

• https://github.com/OmniSharp/omnisharp-roslyn/blob/master/src/OmniSharp.LanguageServerProtocol/LanguageServerHost.cs#L48

And according to code here:

• https://github.com/OmniSharp/omnisharp-roslyn/blob/master/src/OmniSharp.Host/CommandLineApplication.cs#L31

It should be configurable via --loglevel | -l switch.

You could try appending -l Debug to the function lsp-csharp--language-server-command here:

• https://github.com/emacs-lsp/lsp-mode/blob/master/lsp-csharp.el#L245

.. by changing the code to:

(defun lsp-csharp--language-server-command ()
  "Resolves path and arguments to use to start the server."
  (list (lsp-csharp--language-server-path) "-lsp" "-l" "Debug"))

There has been quite some changes made recently to lsp support in omnisharp-roslyn and more are coming, so it could be that log level configuration is broken.

[mcraveiro]

Hi @razzmatazz,

thanks for the prompt response. I will try to modify the log level and see what comes out.

Cheers

Marco

[mcraveiro]

This worked as expected. Thanks for your help.