OpenEuphoria

2. Re: EuMVC:Logging

• Posted by ghaberek (admin) Apr 08, 2022
• 965 views

I've written docs for most of the features of EuMVC. See LOGGER.md. Basically all you have to do is include mvc/logger.e and then pepper your code with various log_xxx() calls as needed. Then define your log level either in code with set_log_level() or via preprocessor defines (e.g. eui -D LOG_DEBUG) which can also be added to your eu.cfg file.

[all] 
-i ../euphoria-mvc/include 
-D LOG_DEBUG 

One way I use logging is to put log_trace() calls at the entry point for each routine, like this:

function index( object request ) 
    log_trace( "request=%s", {map:pairs(request)} ) 
 
    object response = map:new() 
    map:put( response, "title", "My First App" ) 
    map:put( response, "message", "Hello, world!" ) 
 
    return render_template( "index.html", response ) 
end function 
app:route( "/", "index" ) 

Which will result in this output when LOG_TRACE is enabled, complete with color-coded fields for date/time, log level, calling location, and pretty printed values.

2022/04/08 11:22:51 TRACE index@example.ex:43 request={{"REQUEST_HEADERS",12},{"PATH_INFO","/"},{"REQUEST_METHOD","GET"},{"QUERY_STRING",""}} 

-Greg