A storage provider that stores data in memory. When the size limit is reached, items are deleted from the cache with the least recently used item being deleted first.

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Bases: StorageABC

has_blob(digest: Digest) bool

Return True if the blob with the given instance/digest exists.

get_blob(digest: Digest) IO[bytes] | None

Return a file-like object containing the blob. Most implementations will read the entire file into memory and return a BytesIO object. Eventually this should be corrected to handle files which cannot fit into memory.

The file-like object must be readable and seekable.

If the blob isn’t present in storage, return None.

delete_blob(digest: Digest) None

Delete the blob from storage if it’s present.

commit_write(digest: Digest, write_session: IO[bytes]) None

Store the contents for a digest.

The storage object is not responsible for verifying that the data written to the write_session actually matches the digest. The caller must do that.