async def _vlob_create(self, encryption_revision: int, entry_id: EntryID,
ciphered: bytes, now: Pendulum):
"""
Raises:
FSError
FSRemoteSyncError
FSBackendOfflineError
FSWorkspaceInMaintenance
FSBadEncryptionRevision
FSWorkspaceNoAccess
"""
# Vlob upload
rep = await self._backend_cmds("vlob_create", self.workspace_id,
encryption_revision, entry_id, now,
ciphered)
if rep["status"] == "already_exists":
raise FSRemoteSyncError(entry_id)
elif rep["status"] == "not_allowed":
# Seems we lost the access to the realm
raise FSWorkspaceNoWriteAccess(
"Cannot upload manifest: no write access")
elif rep["status"] == "bad_encryption_revision":
raise FSBadEncryptionRevision(
f"Cannot create vlob {entry_id}: Bad encryption revision provided"
)
elif rep["status"] == "in_maintenance":
raise FSWorkspaceInMaintenance(
f"Cannot create vlob while the workspace is in maintenance")
elif rep["status"] != "ok":
raise FSError(f"Cannot create vlob {entry_id}: `{rep['status']}`")
async def _vlob_update(
self,
encryption_revision: int,
entry_id: EntryID,
ciphered: bytes,
now: DateTime,
version: int,
) -> None:
"""
Raises:
FSError
FSRemoteSyncError
FSBackendOfflineError
FSRemoteOperationError
FSWorkspaceInMaintenance
FSBadEncryptionRevision
FSWorkspaceNoAccess
"""
# Vlob upload
with translate_backend_cmds_errors():
rep = await self.backend_cmds.vlob_update(encryption_revision,
VlobID(entry_id.uuid),
version, now, ciphered)
if rep["status"] == "not_found":
raise FSRemoteSyncError(entry_id)
elif rep["status"] == "not_allowed":
# Seems we lost the access to the realm
raise FSWorkspaceNoWriteAccess(
"Cannot upload manifest: no write access")
elif rep["status"] == "require_greater_timestamp":
raise VlobRequireGreaterTimestampError(
rep["strictly_greater_than"])
elif rep["status"] == "bad_version":
raise FSRemoteSyncError(entry_id)
elif rep["status"] == "bad_encryption_revision":
raise FSBadEncryptionRevision(
f"Cannot update vlob {entry_id}: Bad encryption revision provided"
)
elif rep["status"] == "in_maintenance":
raise FSWorkspaceInMaintenance(
"Cannot create vlob while the workspace is in maintenance")
elif rep["status"] != "ok":
raise FSError(f"Cannot update vlob {entry_id}: `{rep['status']}`")
async def _vlob_update(
self,
encryption_revision: int,
entry_id: EntryID,
ciphered: bytes,
now: DateTime,
version: int,
) -> None:
"""
Raises:
FSError
FSRemoteSyncError
FSBackendOfflineError
FSWorkspaceInMaintenance
FSBadEncryptionRevision
FSWorkspaceNoAccess
"""
# Vlob upload
with translate_backend_cmds_errors():
rep = await self.backend_cmds.vlob_update(encryption_revision,
entry_id, version, now,
ciphered)
if rep["status"] == "not_found":
raise FSRemoteSyncError(entry_id)
elif rep["status"] == "not_allowed":
# Seems we lost the access to the realm
raise FSWorkspaceNoWriteAccess(
"Cannot upload manifest: no write access")
elif rep["status"] == "bad_version":
raise FSRemoteSyncError(entry_id)
elif rep["status"] == "bad_timestamp":
# Quick and dirty fix before a better version with a retry loop : go offline so we
# don't have to deal with another client updating manifest with a later timestamp
raise FSBackendOfflineError(rep)
elif rep["status"] == "bad_encryption_revision":
raise FSBadEncryptionRevision(
f"Cannot update vlob {entry_id}: Bad encryption revision provided"
)
elif rep["status"] == "in_maintenance":
raise FSWorkspaceInMaintenance(
"Cannot create vlob while the workspace is in maintenance")
elif rep["status"] != "ok":
raise FSError(f"Cannot update vlob {entry_id}: `{rep['status']}`")
async def upload_block(self, access: BlockAccess, data: bytes) -> None:
"""
Raises:
FSError
FSBackendOfflineError
FSRemoteOperationError
FSWorkspaceInMaintenance
FSWorkspaceNoAccess
"""
# Encryption
try:
ciphered = access.key.encrypt(data)
# Encryption error
except CryptoError as exc:
raise FSError(f"Cannot encrypt block: {exc}") from exc
# Upload block
with translate_backend_cmds_errors():
rep = await self.backend_cmds.block_create(
access.id, RealmID(self.workspace_id.uuid), ciphered)
if rep["status"] == "already_exists":
# Ignore exception if the block has already been uploaded
# This might happen when a failure occurs before the local storage is updated
pass
elif rep["status"] == "not_allowed":
# Seems we lost the access to the realm
raise FSWorkspaceNoWriteAccess(
"Cannot upload block: no write access")
elif rep["status"] == "in_maintenance":
raise FSWorkspaceInMaintenance(
"Cannot upload block while the workspace in maintenance")
elif rep["status"] != "ok":
raise FSError(f"Cannot upload block: {rep}")
# Update local storage
await self.local_storage.set_clean_block(access.id, data)
await self.local_storage.clear_chunk(ChunkID(access.id.uuid),
miss_ok=True)