def test_batch_create_read_session_streams(self):
# Setup Expected Response
expected_response = {}
expected_response = storage_pb2.BatchCreateReadSessionStreamsResponse(
**expected_response
)
# Mock the API response
channel = ChannelStub(responses=[expected_response])
patch = mock.patch("google.api_core.grpc_helpers.create_channel")
with patch as create_channel:
create_channel.return_value = channel
client = big_query_storage_client.BigQueryStorageClient()
# Setup Request
session = {}
requested_streams = 1017221410
response = client.batch_create_read_session_streams(session, requested_streams)
assert expected_response == response
assert len(channel.requests) == 1
expected_request = storage_pb2.BatchCreateReadSessionStreamsRequest(
session=session, requested_streams=requested_streams
)
actual_request = channel.requests[0][1]
assert expected_request == actual_request
def batch_create_read_session_streams(
self,
session,
requested_streams,
retry=google.api_core.gapic_v1.method.DEFAULT,
timeout=google.api_core.gapic_v1.method.DEFAULT,
metadata=None,
):
"""
Creates additional streams for a ReadSession. This API can be used to
dynamically adjust the parallelism of a batch processing task upwards by
adding additional workers.
Example:
>>> from google.cloud import bigquery_storage_v1beta1
>>>
>>> client = bigquery_storage_v1beta1.BigQueryStorageClient()
>>>
>>> # TODO: Initialize `session`:
>>> session = {}
>>>
>>> # TODO: Initialize `requested_streams`:
>>> requested_streams = 0
>>>
>>> response = client.batch_create_read_session_streams(session, requested_streams)
Args:
session (Union[dict, ~google.cloud.bigquery_storage_v1beta1.types.ReadSession]): Required. Must be a non-expired session obtained from a call to
CreateReadSession. Only the name field needs to be set.
If a dict is provided, it must be of the same form as the protobuf
message :class:`~google.cloud.bigquery_storage_v1beta1.types.ReadSession`
requested_streams (int): Required. Number of new streams requested. Must be positive.
Number of added streams may be less than this, see CreateReadSessionRequest
for more information.
retry (Optional[google.api_core.retry.Retry]): A retry object used
to retry requests. If ``None`` is specified, requests will
be retried using a default configuration.
timeout (Optional[float]): The amount of time, in seconds, to wait
for the request to complete. Note that if ``retry`` is
specified, the timeout applies to each individual attempt.
metadata (Optional[Sequence[Tuple[str, str]]]): Additional metadata
that is provided to the method.
Returns:
A :class:`~google.cloud.bigquery_storage_v1beta1.types.BatchCreateReadSessionStreamsResponse` instance.
Raises:
google.api_core.exceptions.GoogleAPICallError: If the request
failed for any reason.
google.api_core.exceptions.RetryError: If the request failed due
to a retryable error and retry attempts failed.
ValueError: If the parameters are invalid.
"""
# Wrap the transport method to add retry and timeout logic.
if "batch_create_read_session_streams" not in self._inner_api_calls:
self._inner_api_calls[
"batch_create_read_session_streams"
] = google.api_core.gapic_v1.method.wrap_method(
self.transport.batch_create_read_session_streams,
default_retry=self._method_configs[
"BatchCreateReadSessionStreams"
].retry,
default_timeout=self._method_configs[
"BatchCreateReadSessionStreams"
].timeout,
client_info=self._client_info,
)
request = storage_pb2.BatchCreateReadSessionStreamsRequest(
session=session, requested_streams=requested_streams
)
if metadata is None:
metadata = []
metadata = list(metadata)
try:
routing_header = [("session.name", session.name)]
except AttributeError:
pass
else:
routing_metadata = google.api_core.gapic_v1.routing_header.to_grpc_metadata(
routing_header
)
metadata.append(routing_metadata) # pragma: no cover
return self._inner_api_calls["batch_create_read_session_streams"](
request, retry=retry, timeout=timeout, metadata=metadata
)
