Class BigQueryWriteClient

BigQuery Write API. The Write API can be used to write data to BigQuery. For supplementary information about the Write API, see: https://cloud.google.com/bigquery/docs/write-api

Inheritance

builtins.object > google.cloud.bigquery_storage_v1.services.big_query_write.client.BigQueryWriteClient > BigQueryWriteClient

Properties

transport

Returns the transport used by the client instance.

Returns
TypeDescription
BigQueryWriteTransportThe transport used by the client instance.

Methods

__exit__

__exit__(type, value, traceback)

Releases underlying transport's resources.

.. warning:: ONLY use as a context manager if the transport is NOT shared with other clients! Exiting the with block will CLOSE the transport and may cause errors in other clients!

append_rows

append_rows(requests: Optional[Iterator[google.cloud.bigquery_storage_v1.types.storage.AppendRowsRequest]] = None, *, retry: Union[google.api_core.retry.Retry, google.api_core.gapic_v1.method._MethodDefault] = <_MethodDefault._DEFAULT_VALUE: <object object>>, timeout: Optional[float] = None, metadata: Sequence[Tuple[str, str]] = ())

Appends data to the given stream.

If offset is specified, the offset is checked against the end of stream. The server returns OUT_OF_RANGE in AppendRowsResponse if an attempt is made to append to an offset beyond the current end of the stream or ALREADY_EXISTS if user provides an offset that has already been written to. User can retry with adjusted offset within the same RPC connection. If offset is not specified, append happens at the end of the stream.

The response contains an optional offset at which the append happened. No offset information will be returned for appends to a default stream.

Responses are received in the same order in which requests are sent. There will be one response for each successful inserted request. Responses may optionally embed error information if the originating AppendRequest was not successfully processed.

The specifics of when successfully appended data is made visible to the table are governed by the type of stream:

  • For COMMITTED streams (which includes the default stream), data is visible immediately upon successful append.

  • For BUFFERED streams, data is made visible via a subsequent FlushRows rpc which advances a cursor to a newer offset in the stream.

  • For PENDING streams, data is not made visible until the stream itself is finalized (via the FinalizeWriteStream rpc), and the stream is explicitly committed via the BatchCommitWriteStreams rpc.

Parameters
NameDescription
requests Iterator[google.cloud.bigquery_storage_v1.types.AppendRowsRequest]

The request object iterator. Request message for AppendRows. Due to the nature of AppendRows being a bidirectional streaming RPC, certain parts of the AppendRowsRequest need only be specified for the first request sent each time the gRPC network connection is opened/reopened.

retry google.api_core.retry.Retry

Designation of what errors, if any, should be retried.

timeout float

The timeout for this request.

metadata Sequence[Tuple[str, str]]

Strings which should be sent along with the request as metadata.

Returns
TypeDescription
Iterable[google.cloud.bigquery_storage_v1.types.AppendRowsResponse]Response message for AppendRows.

batch_commit_write_streams

batch_commit_write_streams(request: Optional[Union[google.cloud.bigquery_storage_v1.types.storage.BatchCommitWriteStreamsRequest, dict]] = None, *, parent: Optional[str] = None, retry: Union[google.api_core.retry.Retry, google.api_core.gapic_v1.method._MethodDefault] = <_MethodDefault._DEFAULT_VALUE: <object object>>, timeout: Optional[float] = None, metadata: Sequence[Tuple[str, str]] = ())

Atomically commits a group of PENDING streams that belong to the same parent table.

Streams must be finalized before commit and cannot be committed multiple times. Once a stream is committed, data in the stream becomes available for read operations.

Parameters
NameDescription
request Union[google.cloud.bigquery_storage_v1.types.BatchCommitWriteStreamsRequest, dict]

The request object. Request message for BatchCommitWriteStreams.

parent str

Required. Parent table that all the streams should belong to, in the form of projects/{project}/datasets/{dataset}/tables/{table}. This corresponds to the parent field on the request instance; if request is provided, this should not be set.

retry google.api_core.retry.Retry

Designation of what errors, if any, should be retried.

timeout float

The timeout for this request.

metadata Sequence[Tuple[str, str]]

Strings which should be sent along with the request as metadata.

Returns
TypeDescription
google.cloud.bigquery_storage_v1.types.BatchCommitWriteStreamsResponseResponse message for BatchCommitWriteStreams.

common_billing_account_path

common_billing_account_path(billing_account: str)

Returns a fully-qualified billing_account string.

Parameter
NameDescription
billing_account str

common_folder_path

common_folder_path(folder: str)

Returns a fully-qualified folder string.

Parameter
NameDescription
folder str

common_location_path

common_location_path(project: str, location: str)

Returns a fully-qualified location string.

Parameters
NameDescription
project str
location str

common_organization_path

common_organization_path(organization: str)

Returns a fully-qualified organization string.

Parameter
NameDescription
organization str

common_project_path

common_project_path(project: str)

Returns a fully-qualified project string.

Parameter
NameDescription
project str

create_write_stream

create_write_stream(request: Optional[Union[google.cloud.bigquery_storage_v1.types.storage.CreateWriteStreamRequest, dict]] = None, *, parent: Optional[str] = None, write_stream: Optional[google.cloud.bigquery_storage_v1.types.stream.WriteStream] = None, retry: Union[google.api_core.retry.Retry, google.api_core.gapic_v1.method._MethodDefault] = <_MethodDefault._DEFAULT_VALUE: <object object>>, timeout: Optional[float] = None, metadata: Sequence[Tuple[str, str]] = ())

Creates a write stream to the given table. Additionally, every table has a special stream named '_default' to which data can be written. This stream doesn't need to be created using CreateWriteStream. It is a stream that can be used simultaneously by any number of clients. Data written to this stream is considered committed as soon as an acknowledgement is received.

Parameters
NameDescription
request Union[google.cloud.bigquery_storage_v1.types.CreateWriteStreamRequest, dict]

The request object. Request message for CreateWriteStream.

parent str

Required. Reference to the table to which the stream belongs, in the format of projects/{project}/datasets/{dataset}/tables/{table}. This corresponds to the parent field on the request instance; if request is provided, this should not be set.

write_stream google.cloud.bigquery_storage_v1.types.WriteStream

Required. Stream to be created. This corresponds to the write_stream field on the request instance; if request is provided, this should not be set.

retry google.api_core.retry.Retry

Designation of what errors, if any, should be retried.

timeout float

The timeout for this request.

metadata Sequence[Tuple[str, str]]

Strings which should be sent along with the request as metadata.

Returns
TypeDescription
google.cloud.bigquery_storage_v1.types.WriteStreamInformation about a single stream that gets data inside the storage system.

finalize_write_stream

finalize_write_stream(request: Optional[Union[google.cloud.bigquery_storage_v1.types.storage.FinalizeWriteStreamRequest, dict]] = None, *, name: Optional[str] = None, retry: Union[google.api_core.retry.Retry, google.api_core.gapic_v1.method._MethodDefault] = <_MethodDefault._DEFAULT_VALUE: <object object>>, timeout: Optional[float] = None, metadata: Sequence[Tuple[str, str]] = ())

Finalize a write stream so that no new data can be appended to the stream. Finalize is not supported on the '_default' stream.

Parameters
NameDescription
request Union[google.cloud.bigquery_storage_v1.types.FinalizeWriteStreamRequest, dict]

The request object. Request message for invoking FinalizeWriteStream.

name str

Required. Name of the stream to finalize, in the form of projects/{project}/datasets/{dataset}/tables/{table}/streams/{stream}. This corresponds to the name field on the request instance; if request is provided, this should not be set.

retry google.api_core.retry.Retry

Designation of what errors, if any, should be retried.

timeout float

The timeout for this request.

metadata Sequence[Tuple[str, str]]

Strings which should be sent along with the request as metadata.

Returns
TypeDescription
google.cloud.bigquery_storage_v1.types.FinalizeWriteStreamResponseResponse message for FinalizeWriteStream.

flush_rows

flush_rows(request: Optional[Union[google.cloud.bigquery_storage_v1.types.storage.FlushRowsRequest, dict]] = None, *, write_stream: Optional[str] = None, retry: Union[google.api_core.retry.Retry, google.api_core.gapic_v1.method._MethodDefault] = <_MethodDefault._DEFAULT_VALUE: <object object>>, timeout: Optional[float] = None, metadata: Sequence[Tuple[str, str]] = ())

Flushes rows to a BUFFERED stream.

If users are appending rows to BUFFERED stream, flush operation is required in order for the rows to become available for reading. A Flush operation flushes up to any previously flushed offset in a BUFFERED stream, to the offset specified in the request.

Flush is not supported on the _default stream, since it is not BUFFERED.

Parameters
NameDescription
request Union[google.cloud.bigquery_storage_v1.types.FlushRowsRequest, dict]

The request object. Request message for FlushRows.

write_stream str

Required. The stream that is the target of the flush operation. This corresponds to the write_stream field on the request instance; if request is provided, this should not be set.

retry google.api_core.retry.Retry

Designation of what errors, if any, should be retried.

timeout float

The timeout for this request.

metadata Sequence[Tuple[str, str]]

Strings which should be sent along with the request as metadata.

Returns
TypeDescription
google.cloud.bigquery_storage_v1.types.FlushRowsResponseRespond message for FlushRows.

from_service_account_file

from_service_account_file(filename: str, *args, **kwargs)

Creates an instance of this client using the provided credentials file.

Parameters
NameDescription
filename str

The path to the service account private key json file.

args

Additional arguments to pass to the constructor.

kwargs

Additional arguments to pass to the constructor.

Returns
TypeDescription
BigQueryWriteClientThe constructed client.

from_service_account_info

from_service_account_info(info: dict, *args, **kwargs)

Creates an instance of this client using the provided credentials info.

Parameters
NameDescription
info dict

The service account private key info.

args

Additional arguments to pass to the constructor.

kwargs

Additional arguments to pass to the constructor.

Returns
TypeDescription
BigQueryWriteClientThe constructed client.

from_service_account_json

from_service_account_json(filename: str, *args, **kwargs)

Creates an instance of this client using the provided credentials file.

Parameters
NameDescription
filename str

The path to the service account private key json file.

args

Additional arguments to pass to the constructor.

kwargs

Additional arguments to pass to the constructor.

Returns
TypeDescription
BigQueryWriteClientThe constructed client.

get_write_stream

get_write_stream(request: Optional[Union[google.cloud.bigquery_storage_v1.types.storage.GetWriteStreamRequest, dict]] = None, *, name: Optional[str] = None, retry: Union[google.api_core.retry.Retry, google.api_core.gapic_v1.method._MethodDefault] = <_MethodDefault._DEFAULT_VALUE: <object object>>, timeout: Optional[float] = None, metadata: Sequence[Tuple[str, str]] = ())

Gets information about a write stream.

Parameters
NameDescription
request Union[google.cloud.bigquery_storage_v1.types.GetWriteStreamRequest, dict]

The request object. Request message for GetWriteStreamRequest.

name str

Required. Name of the stream to get, in the form of projects/{project}/datasets/{dataset}/tables/{table}/streams/{stream}. This corresponds to the name field on the request instance; if request is provided, this should not be set.

retry google.api_core.retry.Retry

Designation of what errors, if any, should be retried.

timeout float

The timeout for this request.

metadata Sequence[Tuple[str, str]]

Strings which should be sent along with the request as metadata.

Returns
TypeDescription
google.cloud.bigquery_storage_v1.types.WriteStreamInformation about a single stream that gets data inside the storage system.

parse_common_billing_account_path

parse_common_billing_account_path(path: str)

Parse a billing_account path into its component segments.

Parameter
NameDescription
path str

parse_common_folder_path

parse_common_folder_path(path: str)

Parse a folder path into its component segments.

Parameter
NameDescription
path str

parse_common_location_path

parse_common_location_path(path: str)

Parse a location path into its component segments.

Parameter
NameDescription
path str

parse_common_organization_path

parse_common_organization_path(path: str)

Parse a organization path into its component segments.

Parameter
NameDescription
path str

parse_common_project_path

parse_common_project_path(path: str)

Parse a project path into its component segments.

Parameter
NameDescription
path str

parse_table_path

parse_table_path(path: str)

Parses a table path into its component segments.

Parameter
NameDescription
path str

parse_write_stream_path

parse_write_stream_path(path: str)

Parses a write_stream path into its component segments.

Parameter
NameDescription
path str

table_path

table_path(project: str, dataset: str, table: str)

Returns a fully-qualified table string.

Parameters
NameDescription
project str
dataset str
table str

write_stream_path

write_stream_path(project: str, dataset: str, table: str, stream: str)

Returns a fully-qualified write_stream string.

Parameters
NameDescription
project str
dataset str
table str
stream str