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@@ -294,6 +294,10 @@ class BaseCollection:
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def create_collection(cls, href, collection=None, props=None):
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"""Create a collection.
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+ If the collection already exists and neither ``collection`` nor
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+ ``props`` are set, this method shouldn't do anything. Otherwise the
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+ existing collection must be replaced.
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+
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``collection`` is a list of vobject components.
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``props`` are metadata values for the collection.
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@@ -551,6 +555,11 @@ class Collection(BaseCollection):
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for card in collection:
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self.upload(self._find_available_file_name(), card)
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+ # This operation is not atomic on the filesystem level but it's
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+ # very unlikely that one rename operations succeeds while the
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+ # other fails or that only one gets written to disk.
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+ if os.path.exists(filesystem_path):
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+ os.rename(filesystem_path, os.path.join(tmp_dir, "delete"))
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os.rename(tmp_filesystem_path, filesystem_path)
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sync_directory(parent_dir)
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Unrud