NPO-Accounting/oxrlib Changeset - 7ae8c359e0b9

Changeset - 7ae8c359e0b9

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Brett Smith - 7 years ago 2017-05-17 16:52:37
brettcsmith@brettcsmith.org

CacheFile opens the file immediately.

This is necessary to work correctly with the error-catching logic of LoaderChain.

1 file changed with 5 insertions and 7 deletions:

oxrlib/cache.py

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oxrlib/cache.py

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@@ ... / @@ -3,27 +3,25 @@ import json @@
 from . import errors
 class CacheFileBase:
     def __init__(self, path, *args, **kwargs):
         self.path = path
         self.open = functools.partial(path.open, *args, **kwargs)
         try:
             self.open_file = path.open(*args, **kwargs)
         except OSError as error:
             self._translate_error(error, 'init')
     def _translate_error(self, error, when):
         for orig_type, mapped_type in self.ERRORS_MAP:
             if isinstance(error, orig_type):
                 raise mapped_type(self.path) from error
         raise error
     def __enter__(self):
         try:
             self.open_file = self.open()
         except OSError as error:
             self._translate_error(error, 'enter')
         else:
             return self.open_file
         return self.open_file
     def __exit__(self, exc_type, exc_value, exc_tb):
         try:
             self.open_file.close()
         except OSError as error:
             self._translate_error(error, 'exit')

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