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feat(bigtable): raise the UDS channel inbound message cap to 256 MB #18782

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feat(bigtable): raise the UDS channel inbound message cap to 256 MB #18782

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14 changes: 13 additions & 1 deletion packages/google-cloud-bigtable/google/cloud/bigtable/data/_async/_accelerator_client.py
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Original file line number Diff line number Diff line change
Expand Up @@ -45,6 +45,16 @@
_MUTATE_ROW_METHOD = "/google.bigtable.v2.Bigtable/MutateRow"
_READ_ROWS_METHOD = "/google.bigtable.v2.Bigtable/ReadRows"

# Inbound message cap on the UDS channel. gRPC defaults this to 4 MiB, a limit
# meant for a channel that crosses a network. This one doesn't leave the
# machine: the daemon has already paid the cost of pulling the response off the
# wire, and all the cap does on this hop is turn an otherwise-fine read into
# RESOURCE_EXHAUSTED. Raise it well past anything the service itself produces so
# the UDS leg is never the narrower of the two.
_MAX_RECEIVE_MESSAGE_LENGTH = 256 * 1024 * 1024

_CHANNEL_OPTIONS = (("grpc.max_receive_message_length", _MAX_RECEIVE_MESSAGE_LENGTH),)


def _uds_target(uds_path: str) -> str:
"""Build the gRPC target for the daemon's socket at ``uds_path``.
Expand All @@ -70,7 +80,9 @@ class _AsyncAcceleratorClient:
def __init__(self, uds_path: str, auth_secret: str):
self._uds_path = uds_path
self._metadata = (("x-accelerator-token", auth_secret),)
self._channel = insecure_channel(_uds_target(uds_path))
self._channel = insecure_channel(
_uds_target(uds_path), options=_CHANNEL_OPTIONS
)
self._mutate_row_stub = self._channel.unary_unary(
_MUTATE_ROW_METHOD,
request_serializer=MutateRowRequest.serialize,
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6 changes: 5 additions & 1 deletion ...ges/google-cloud-bigtable/google/cloud/bigtable/data/_sync_autogen/_accelerator_client.py
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Original file line number Diff line number Diff line change
Expand Up @@ -41,6 +41,8 @@

_MUTATE_ROW_METHOD = "/google.bigtable.v2.Bigtable/MutateRow"
_READ_ROWS_METHOD = "/google.bigtable.v2.Bigtable/ReadRows"
_MAX_RECEIVE_MESSAGE_LENGTH = 256 * 1024 * 1024
_CHANNEL_OPTIONS = (("grpc.max_receive_message_length", _MAX_RECEIVE_MESSAGE_LENGTH),)


def _uds_target(uds_path: str) -> str:
Expand All @@ -65,7 +67,9 @@ class _AcceleratorClient:
def __init__(self, uds_path: str, auth_secret: str):
self._uds_path = uds_path
self._metadata = (("x-accelerator-token", auth_secret),)
self._channel = insecure_channel(_uds_target(uds_path))
self._channel = insecure_channel(
_uds_target(uds_path), options=_CHANNEL_OPTIONS
)
self._mutate_row_stub = self._channel.unary_unary(
_MUTATE_ROW_METHOD,
request_serializer=MutateRowRequest.serialize,
Expand Down
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