[OE-core] [PATCH] populate SDK: prepare calling of bb.utils for exceptions

[Mike Looijmans]

On 15-10-15 19:27, Benjamin Esquivel wrote:
> bb.utils.remove, bb.utils.movefile and bb.utils.mkdirhier can throw
> exceptions that need handling and proper error messages.
>
> [YOCTO#8213]
...
> +    def mkdirhier(self, dirpath):
> +        try:
> +            bb.utils.mkdirhier(dirpath)
> +        except OSError as e:
> +            bb.warn(str(e))
> +            bb.error("cannot make dir for SDK: {}".format(dirpath))
...


I see two bad things happening here:

- This will print a message, but continue processing as if nothing bad 
happened, wreaking havoc later on when the caller might expect the directory 
to actually exist and raise exceptions that are much harder to solve.

- It loses the information in the original exception, and since it doesn't 
throw a new exception, the user is now left in the dark as to where the 
problem occured, since there's no stack trace now.


For what I see in this code, it will actually make thing worse by hiding 
errors and obscuring information. You're not "handling" the exception here, 
you're almost "ignoring" them, which isn't quite the same.



Kind regards,

Mike Looijmans
System Expert

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