57 lines
1.9 KiB
Python
57 lines
1.9 KiB
Python
# Copyright The IETF Trust 2020-2025, All Rights Reserved
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"""Django Storage classes"""
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from pathlib import Path
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from django.conf import settings
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from django.core.files.storage import FileSystemStorage
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from ietf.doc.storage_utils import store_file
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from .log import log
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class NoLocationMigrationFileSystemStorage(FileSystemStorage):
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def deconstruct(self):
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path, args, kwargs = super().deconstruct()
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kwargs["location"] = None # don't record location in migrations
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return path, args, kwargs
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class BlobShadowFileSystemStorage(NoLocationMigrationFileSystemStorage):
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"""FileSystemStorage that shadows writes to the blob store as well
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Strips directories from the filename when naming the blob.
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"""
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def __init__(
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self,
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*, # disallow positional arguments
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kind: str,
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location=None,
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base_url=None,
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file_permissions_mode=None,
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directory_permissions_mode=None,
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):
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self.kind = kind
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super().__init__(
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location, base_url, file_permissions_mode, directory_permissions_mode
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)
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def save(self, name, content, max_length=None):
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# Write content to the filesystem - this deals with chunks, etc...
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saved_name = super().save(name, content, max_length)
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if settings.ENABLE_BLOBSTORAGE:
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try:
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# Retrieve the content and write to the blob store
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blob_name = Path(saved_name).name # strips path
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with self.open(saved_name, "rb") as f:
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store_file(self.kind, blob_name, f, allow_overwrite=True)
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except Exception as err:
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log(f"Blobstore Error: Failed to shadow {saved_name} at {self.kind}:{blob_name}: {repr(err)}")
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return saved_name # includes the path!
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def deconstruct(self):
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path, args, kwargs = super().deconstruct()
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kwargs["kind"] = "" # don't record "kind" in migrations
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return path, args, kwargs
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