Class BigQueryWriteClient (2.27.0) 

BigQueryWriteClient(*, credentials: typing.Optional[google.auth.credentials.Credentials] = None, transport: typing.Optional[typing.Union[str, google.cloud.bigquery_storage_v1beta2.services.big_query_write.transports.base.BigQueryWriteTransport, typing.Callable[[...], google.cloud.bigquery_storage_v1beta2.services.big_query_write.transports.base.BigQueryWriteTransport]]] = None, client_options: typing.Optional[typing.Union[google.api_core.client_options.ClientOptions, dict]] = None, client_info: google.api_core.gapic_v1.client_info.ClientInfo = <google.api_core.gapic_v1.client_info.ClientInfo object>)

BigQuery Write API.

The Write API can be used to write data to BigQuery.

The google.cloud.bigquery.storage.v1 API </bigquery/docs/reference/storage/rpc/google.cloud.bigquery.storage.v1>__ should be used instead of the v1beta2 API for BigQueryWrite operations.

Properties

api_endpoint

Return the API endpoint used by the client instance.

Returns
Type Description
str The API endpoint used by the client instance.

transport

Returns the transport used by the client instance.

Returns
Type Description
BigQueryWriteTransport The transport used by the client instance.

universe_domain

Return the universe domain used by the client instance.

Returns
Type Description
str The universe domain used by the client instance.

Methods

BigQueryWriteClient

BigQueryWriteClient(*, credentials: typing.Optional[google.auth.credentials.Credentials] = None, transport: typing.Optional[typing.Union[str, google.cloud.bigquery_storage_v1beta2.services.big_query_write.transports.base.BigQueryWriteTransport, typing.Callable[[...], google.cloud.bigquery_storage_v1beta2.services.big_query_write.transports.base.BigQueryWriteTransport]]] = None, client_options: typing.Optional[typing.Union[google.api_core.client_options.ClientOptions, dict]] = None, client_info: google.api_core.gapic_v1.client_info.ClientInfo = <google.api_core.gapic_v1.client_info.ClientInfo object>)

Instantiates the big query write client.

Parameters
Name Description
credentials Optional[google.auth.credentials.Credentials]

The authorization credentials to attach to requests. These credentials identify the application to the service; if none are specified, the client will attempt to ascertain the credentials from the environment.
transport Optional[Union[str,BigQueryWriteTransport,Callable[..., BigQueryWriteTransport]]]

The transport to use, or a Callable that constructs and returns a new transport. If a Callable is given, it will be called with the same set of initialization arguments as used in the BigQueryWriteTransport constructor. If set to None, a transport is chosen automatically.
client_options Optional[Union[google.api_core.client_options.ClientOptions, dict]]

Custom options for the client. 1. The api_endpoint property can be used to override the default endpoint provided by the client when transport is not explicitly provided. Only if this property is not set and transport was not explicitly provided, the endpoint is determined by the GOOGLE_API_USE_MTLS_ENDPOINT environment variable, which have one of the following values: "always" (always use the default mTLS endpoint), "never" (always use the default regular endpoint) and "auto" (auto-switch to the default mTLS endpoint if client certificate is present; this is the default value). 2. If the GOOGLE_API_USE_CLIENT_CERTIFICATE environment variable is "true", then the client_cert_source property can be used to provide a client certificate for mTLS transport. If not provided, the default SSL client certificate will be used if present. If GOOGLE_API_USE_CLIENT_CERTIFICATE is "false" or not set, no client certificate will be used. 3. The universe_domain property can be used to override the default "googleapis.com" universe. Note that the api_endpoint property still takes precedence; and universe_domain is currently not supported for mTLS.
client_info google.api_core.gapic_v1.client_info.ClientInfo

The client info used to send a user-agent string along with API requests. If None, then default info will be used. Generally, you only need to set this if you're developing your own client library.
Exceptions
Type Description
google.auth.exceptions.MutualTLSChannelError If mutual TLS transport creation failed for any reason.

__exit__

__exit__(type, value, traceback)

Releases underlying transport's resources.

append_rows

append_rows(
    requests: typing.Optional[
        typing.Iterator[
            google.cloud.bigquery_storage_v1beta2.types.storage.AppendRowsRequest
        ]
    ] = None,
    *,
    retry: typing.Optional[
        typing.Union[
            google.api_core.retry.retry_unary.Retry,
            google.api_core.gapic_v1.method._MethodDefault,
        ]
    ] = _MethodDefault._DEFAULT_VALUE,
    timeout: typing.Union[float, object] = _MethodDefault._DEFAULT_VALUE,
    metadata: typing.Sequence[typing.Tuple[str, str]] = ()
) -> typing.Iterable[
    google.cloud.bigquery_storage_v1beta2.types.storage.AppendRowsResponse
]

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 provids an offset that has already been written to. User can retry with adjusted offset within the same RPC stream. If offset is not specified, append happens at the end of the stream.

The response contains the offset at which the append happened. Responses are received in the same order in which requests are sent. There will be one response for each successful request. If the offset is not set in response, it means append didn't happen due to some errors. If one request fails, all the subsequent requests will also fail until a success request is made again.

If the stream is of PENDING type, data will only be available for read operations after the stream is committed.

# This snippet has been automatically generated and should be regarded as a
# code template only.
# It will require modifications to work:
# - It may require correct/in-range values for request initialization.
# - It may require specifying regional endpoints when creating the service
#   client as shown in:
#   https://googleapis.dev/python/google-api-core/latest/client_options.html
from google.cloud import bigquery_storage_v1beta2

def sample_append_rows():
    # Create a client
    client = bigquery_storage_v1beta2.BigQueryWriteClient()

    # Initialize request argument(s)
    request = bigquery_storage_v1beta2.AppendRowsRequest(
        write_stream="write_stream_value",
    )

    # This method expects an iterator which contains
    # 'bigquery_storage_v1beta2.AppendRowsRequest' objects
    # Here we create a generator that yields a single `request` for
    # demonstrative purposes.
    requests = [request]

    def request_generator():
        for request in requests:
            yield request

    # Make the request
    stream = client.append_rows(requests=request_generator())

    # Handle the response
    for response in stream:
        print(response)
Parameters
Name Description
requests Iterator[google.cloud.bigquery_storage_v1beta2.types.AppendRowsRequest]

The request object iterator. Request message for AppendRows.
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
Type Description
Iterable[google.cloud.bigquery_storage_v1beta2.types.AppendRowsResponse] Response message for AppendRows.

batch_commit_write_streams

batch_commit_write_streams(
    request: typing.Optional[
        typing.Union[
            google.cloud.bigquery_storage_v1beta2.types.storage.BatchCommitWriteStreamsRequest,
            dict,
        ]
    ] = None,
    *,
    parent: typing.Optional[str] = None,
    retry: typing.Optional[
        typing.Union[
            google.api_core.retry.retry_unary.Retry,
            google.api_core.gapic_v1.method._MethodDefault,
        ]
    ] = _MethodDefault._DEFAULT_VALUE,
    timeout: typing.Union[float, object] = _MethodDefault._DEFAULT_VALUE,
    metadata: typing.Sequence[typing.Tuple[str, str]] = ()
) -> (
    google.cloud.bigquery_storage_v1beta2.types.storage.BatchCommitWriteStreamsResponse
)

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.

# This snippet has been automatically generated and should be regarded as a
# code template only.
# It will require modifications to work:
# - It may require correct/in-range values for request initialization.
# - It may require specifying regional endpoints when creating the service
#   client as shown in:
#   https://googleapis.dev/python/google-api-core/latest/client_options.html
from google.cloud import bigquery_storage_v1beta2

def sample_batch_commit_write_streams():
    # Create a client
    client = bigquery_storage_v1beta2.BigQueryWriteClient()

    # Initialize request argument(s)
    request = bigquery_storage_v1beta2.BatchCommitWriteStreamsRequest(
        parent="parent_value",
        write_streams=['write_streams_value1', 'write_streams_value2'],
    )

    # Make the request
    response = client.batch_commit_write_streams(request=request)

    # Handle the response
    print(response)
Parameters
Name Description
request Union[google.cloud.bigquery_storage_v1beta2.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
Type Description
google.cloud.bigquery_storage_v1beta2.types.BatchCommitWriteStreamsResponse Response message for BatchCommitWriteStreams.

common_billing_account_path

common_billing_account_path(billing_account: str) -> str

Returns a fully-qualified billing_account string.

common_folder_path

common_folder_path(folder: str) -> str

Returns a fully-qualified folder string.

common_location_path

common_location_path(project: str, location: str) -> str

Returns a fully-qualified location string.

common_organization_path

common_organization_path(organization: str) -> str

Returns a fully-qualified organization string.

common_project_path

common_project_path(project: str) -> str

Returns a fully-qualified project string.

create_write_stream

create_write_stream(
    request: typing.Optional[
        typing.Union[
            google.cloud.bigquery_storage_v1beta2.types.storage.CreateWriteStreamRequest,
            dict,
        ]
    ] = None,
    *,
    parent: typing.Optional[str] = None,
    write_stream: typing.Optional[
        google.cloud.bigquery_storage_v1beta2.types.stream.WriteStream
    ] = None,
    retry: typing.Optional[
        typing.Union[
            google.api_core.retry.retry_unary.Retry,
            google.api_core.gapic_v1.method._MethodDefault,
        ]
    ] = _MethodDefault._DEFAULT_VALUE,
    timeout: typing.Union[float, object] = _MethodDefault._DEFAULT_VALUE,
    metadata: typing.Sequence[typing.Tuple[str, str]] = ()
) -> google.cloud.bigquery_storage_v1beta2.types.stream.WriteStream

Creates a write stream to the given table. Additionally, every table has a special COMMITTED 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.

# This snippet has been automatically generated and should be regarded as a
# code template only.
# It will require modifications to work:
# - It may require correct/in-range values for request initialization.
# - It may require specifying regional endpoints when creating the service
#   client as shown in:
#   https://googleapis.dev/python/google-api-core/latest/client_options.html
from google.cloud import bigquery_storage_v1beta2

def sample_create_write_stream():
    # Create a client
    client = bigquery_storage_v1beta2.BigQueryWriteClient()

    # Initialize request argument(s)
    request = bigquery_storage_v1beta2.CreateWriteStreamRequest(
        parent="parent_value",
    )

    # Make the request
    response = client.create_write_stream(request=request)

    # Handle the response
    print(response)
Parameters
Name Description
request Union[google.cloud.bigquery_storage_v1beta2.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_v1beta2.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
Type Description
google.cloud.bigquery_storage_v1beta2.types.WriteStream Information about a single stream that gets data inside the storage system.

finalize_write_stream

finalize_write_stream(
    request: typing.Optional[
        typing.Union[
            google.cloud.bigquery_storage_v1beta2.types.storage.FinalizeWriteStreamRequest,
            dict,
        ]
    ] = None,
    *,
    name: typing.Optional[str] = None,
    retry: typing.Optional[
        typing.Union[
            google.api_core.retry.retry_unary.Retry,
            google.api_core.gapic_v1.method._MethodDefault,
        ]
    ] = _MethodDefault._DEFAULT_VALUE,
    timeout: typing.Union[float, object] = _MethodDefault._DEFAULT_VALUE,
    metadata: typing.Sequence[typing.Tuple[str, str]] = ()
) -> google.cloud.bigquery_storage_v1beta2.types.storage.FinalizeWriteStreamResponse

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

# This snippet has been automatically generated and should be regarded as a
# code template only.
# It will require modifications to work:
# - It may require correct/in-range values for request initialization.
# - It may require specifying regional endpoints when creating the service
#   client as shown in:
#   https://googleapis.dev/python/google-api-core/latest/client_options.html
from google.cloud import bigquery_storage_v1beta2

def sample_finalize_write_stream():
    # Create a client
    client = bigquery_storage_v1beta2.BigQueryWriteClient()

    # Initialize request argument(s)
    request = bigquery_storage_v1beta2.FinalizeWriteStreamRequest(
        name="name_value",
    )

    # Make the request
    response = client.finalize_write_stream(request=request)

    # Handle the response
    print(response)
Parameters
Name Description
request Union[google.cloud.bigquery_storage_v1beta2.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
Type Description
google.cloud.bigquery_storage_v1beta2.types.FinalizeWriteStreamResponse Response message for FinalizeWriteStream.

flush_rows

flush_rows(
    request: typing.Optional[
        typing.Union[
            google.cloud.bigquery_storage_v1beta2.types.storage.FlushRowsRequest, dict
        ]
    ] = None,
    *,
    write_stream: typing.Optional[str] = None,
    retry: typing.Optional[
        typing.Union[
            google.api_core.retry.retry_unary.Retry,
            google.api_core.gapic_v1.method._MethodDefault,
        ]
    ] = _MethodDefault._DEFAULT_VALUE,
    timeout: typing.Union[float, object] = _MethodDefault._DEFAULT_VALUE,
    metadata: typing.Sequence[typing.Tuple[str, str]] = ()
) -> google.cloud.bigquery_storage_v1beta2.types.storage.FlushRowsResponse

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.

# This snippet has been automatically generated and should be regarded as a
# code template only.
# It will require modifications to work:
# - It may require correct/in-range values for request initialization.
# - It may require specifying regional endpoints when creating the service
#   client as shown in:
#   https://googleapis.dev/python/google-api-core/latest/client_options.html
from google.cloud import bigquery_storage_v1beta2

def sample_flush_rows():
    # Create a client
    client = bigquery_storage_v1beta2.BigQueryWriteClient()

    # Initialize request argument(s)
    request = bigquery_storage_v1beta2.FlushRowsRequest(
        write_stream="write_stream_value",
    )

    # Make the request
    response = client.flush_rows(request=request)

    # Handle the response
    print(response)
Parameters
Name Description
request Union[google.cloud.bigquery_storage_v1beta2.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
Type Description
google.cloud.bigquery_storage_v1beta2.types.FlushRowsResponse Respond 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.

Parameter
Name Description
filename str

The path to the service account private key json file.
Returns
Type Description
BigQueryWriteClient The 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.

Parameter
Name Description
info dict

The service account private key info.
Returns
Type Description
BigQueryWriteClient The 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.

Parameter
Name Description
filename str

The path to the service account private key json file.
Returns
Type Description
BigQueryWriteClient The constructed client.

get_mtls_endpoint_and_cert_source

get_mtls_endpoint_and_cert_source(
    client_options: typing.Optional[
        google.api_core.client_options.ClientOptions
    ] = None,
)

Deprecated. Return the API endpoint and client cert source for mutual TLS.

The client cert source is determined in the following order: (1) if GOOGLE_API_USE_CLIENT_CERTIFICATE environment variable is not "true", the client cert source is None. (2) if client_options.client_cert_source is provided, use the provided one; if the default client cert source exists, use the default one; otherwise the client cert source is None.

The API endpoint is determined in the following order: (1) if client_options.api_endpoint if provided, use the provided one. (2) if GOOGLE_API_USE_CLIENT_CERTIFICATE environment variable is "always", use the default mTLS endpoint; if the environment variable is "never", use the default API endpoint; otherwise if client cert source exists, use the default mTLS endpoint, otherwise use the default API endpoint.

More details can be found at https://google.aip.dev/auth/4114.

Parameter
Name Description
client_options google.api_core.client_options.ClientOptions

Custom options for the client. Only the api_endpoint and client_cert_source properties may be used in this method.
Exceptions
Type Description
google.auth.exceptions.MutualTLSChannelError If any errors happen.
Returns
Type Description
Tuple[str, Callable[[], Tuple[bytes, bytes]]] returns the API endpoint and the client cert source to use.

get_write_stream

get_write_stream(
    request: typing.Optional[
        typing.Union[
            google.cloud.bigquery_storage_v1beta2.types.storage.GetWriteStreamRequest,
            dict,
        ]
    ] = None,
    *,
    name: typing.Optional[str] = None,
    retry: typing.Optional[
        typing.Union[
            google.api_core.retry.retry_unary.Retry,
            google.api_core.gapic_v1.method._MethodDefault,
        ]
    ] = _MethodDefault._DEFAULT_VALUE,
    timeout: typing.Union[float, object] = _MethodDefault._DEFAULT_VALUE,
    metadata: typing.Sequence[typing.Tuple[str, str]] = ()
) -> google.cloud.bigquery_storage_v1beta2.types.stream.WriteStream

Gets a write stream.

# This snippet has been automatically generated and should be regarded as a
# code template only.
# It will require modifications to work:
# - It may require correct/in-range values for request initialization.
# - It may require specifying regional endpoints when creating the service
#   client as shown in:
#   https://googleapis.dev/python/google-api-core/latest/client_options.html
from google.cloud import bigquery_storage_v1beta2

def sample_get_write_stream():
    # Create a client
    client = bigquery_storage_v1beta2.BigQueryWriteClient()

    # Initialize request argument(s)
    request = bigquery_storage_v1beta2.GetWriteStreamRequest(
        name="name_value",
    )

    # Make the request
    response = client.get_write_stream(request=request)

    # Handle the response
    print(response)
Parameters
Name Description
request Union[google.cloud.bigquery_storage_v1beta2.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
Type Description
google.cloud.bigquery_storage_v1beta2.types.WriteStream Information about a single stream that gets data inside the storage system.

parse_common_billing_account_path

parse_common_billing_account_path(path: str) -> typing.Dict[str, str]

Parse a billing_account path into its component segments.

parse_common_folder_path

parse_common_folder_path(path: str) -> typing.Dict[str, str]

Parse a folder path into its component segments.

parse_common_location_path

parse_common_location_path(path: str) -> typing.Dict[str, str]

Parse a location path into its component segments.

parse_common_organization_path

parse_common_organization_path(path: str) -> typing.Dict[str, str]

Parse a organization path into its component segments.

parse_common_project_path

parse_common_project_path(path: str) -> typing.Dict[str, str]

Parse a project path into its component segments.

parse_table_path

parse_table_path(path: str) -> typing.Dict[str, str]

Parses a table path into its component segments.

parse_write_stream_path

parse_write_stream_path(path: str) -> typing.Dict[str, str]

Parses a write_stream path into its component segments.

table_path

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

Returns a fully-qualified table string.

write_stream_path

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

Returns a fully-qualified write_stream string.