Add executed filename and backtrace in metadata

[gianniszach]

The extension logs the function/method name, the timings and the arguments in the metadata, it would be great if you could add the filename that executed the function/method and a backtrace showing the filename of the original caller.

I've tried to add the filename by adding another variable in the scoutapm_stack_frame and using the zend_get_executed_filename() inside the record_observed_stack_frame() like this

SCOUTAPM_G(observed_stack_frames)[SCOUTAPM_G(observed_stack_frames_count)].function_filename = zend_get_executed_filename();

This seems to work alright, however, I can only see the filename executing the observed function.

In cases where for example I have a PDO database class file and my "main" file includes and uses the database file. In the "main" file I create my SQL query and I use the database class to run it. The current implementation shows the database class filename where I'd like to also see the filename of the original caller, hence the need of the backtrace.

I've tried to use the prev_execute_data of zend_execute_data to fetch the previous filename but I'm way out of my league, I don't know anything about PHP internals and the only thing I managed to create is a segfault :)

[asgrim]

Thanks for the suggestion, we'll take a look and figure out what can be done.