buildgrid.server.cas.storage.remote module
RemoteStorage
Forwwards storage requests to a remote storage.
- class buildgrid.server.cas.storage.remote.RemoteStorage(remote: str, instance_name: str, channel_options: Sequence[Tuple[str, Any]] | None = None, tls_credentials: Dict[str, Any] | None = None, retries: int = 0, max_backoff: int = 64, request_timeout: float | None = None)
Bases:
StorageABC
- setup_grpc() None
- get_capabilities() CacheCapabilities
- 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
The REAPI doesn’t have a deletion method, so we can’t support deletion for remote storage.
- bulk_delete(digests: List[Digest]) List[str]
The REAPI doesn’t have a deletion method, so we can’t support bulk deletion for remote storage.
- begin_write(digest: Digest) IO[bytes]
Return a file-like object to which a blob’s contents could be written.
- commit_write(digest: Digest, write_session: IO[bytes]) None
Commit the write operation. write_session must be an object returned by begin_write.
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.
- missing_blobs(digests: List[Digest]) List[Digest]
Return a container containing the blobs not present in CAS.
- bulk_update_blobs(blobs: List[Tuple[Digest, bytes]]) List[Status]
Given a container of (digest, value) tuples, add all the blobs to CAS. Return a list of Status objects corresponding to the result of uploading each of the blobs.
Unlike in commit_write, the storage object will verify that each of the digests matches the provided data.
- bulk_read_blobs(digests: List[Digest]) Dict[str, IO[bytes]]
Given an iterable container of digests, return a {hash: file-like object} dictionary corresponding to the blobs represented by the input digests.
Each file-like object must be readable and seekable.