Any way to write to log stream from a Server Script?

Frappe Framework Customization
1

Apparently the usual Python print() command is prohibited in a Server Script.

As a work around I am using …

msg = []
msg.append(f"some{thing}, ")
msg.append("something {else}, ")
frappe.msgprint( msg = ''.join(msg), title = 'Debug Log' )

… so as to build up usefully large snapshots of what’s going on in my code.

It’s pretty horrible.

Is there a better alternative?

Alternatively, how can I call into my whitelisted functionality?

2

Did you try frappe.logger()

used like this:

3

It would have been nice, but I get :

AttributeError: module has no attribute 'logger'

I was hoping this list of RestrictedPython commands was out of date. Seems not.

I really don’t get it. I seem to able to effect some fairly drastic changes to the database through a Server Script, but writing to a log file, “Oh, NO! Much too insecure!”

Weird!

1 Like
4

Discovered this challenge myself, yesterday.

These 2 lines of syntax are accepted. They don’t violate RestrictedPython.

log("This is my message")
frappe.log_error("This is my message")

I have no idea where 'log()' is trying to write to. I haven’t been able to find it. I’ve scanned every file in the ./logs subdirectory. :man_shrugging:

The 'log_error()' does successfully write to the “Error Log” DocType.

1 Like