Fix problem with prematurely erased sandbox folder retrieved_temporary_folder #1168
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sphuber
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type/bug
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…y_folder The new feature of the retrieve_temporary_list employed an unstored FolderData node, added to the retrieved dictionary to be passed to the parse_from_retrieved method of the Parser. The problem is that the temporary folder can be erased when the object is garbage collected, since that is called in the __del__ method of the Node class, if it has an unstored sandbox folder. This didn't use to get called with the old daemon, but with the new daemon and process system, somewhere in the pipeline this gets triggered causing the sandbox folder to be deleted at the time it gets to the parse_with_retrieved call. The solution is to replace the FolderData simply with an absolute folder path which can be used by the caller to populate with a temporary folder, that is created within a context manager and will be guaranteed by the caller to be kept alive until the parse call is completed, upon which it will be destroyed.
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giovannipizzi
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Feb 21, 2018
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Fixes #1166
The new feature of the retrieve_temporary_list employed an unstored FolderData
node, added to the retrieved dictionary to be passed to the parse_from_retrieved
method of the Parser. The problem is that the temporary folder can be erased
when the object is garbage collected, since that is called in the del method
of the Node class, if it has an unstored sandbox folder. This didn't use to get
called with the old daemon, but with the new daemon and process system, somewhere
in the pipeline this gets triggered causing the sandbox folder to be deleted at
the time it gets to the parse_with_retrieved call.
The solution is to replace the FolderData simply with an absolute folder path
which can be used by the caller to populate with a temporary folder, that is
created within a context manager and will be guaranteed by the caller to be
kept alive until the parse call is completed, upon which it will be destroyed.