google::cloud::bigquery_storage_v1::BigQueryWriteClient Class Reference

BigQuery Write API. More...

#include <google/cloud/bigquery/storage/v1/bigquery_write_client.h>

Public Member Functions
	BigQueryWriteClient (std::shared_ptr< BigQueryWriteConnection > connection, Options opts={})
	~BigQueryWriteClient ()
StatusOr< google::cloud::bigquery::storage::v1::WriteStream >	CreateWriteStream (std::string const &parent, google::cloud::bigquery::storage::v1::WriteStream const &write_stream, Options opts={})
	Creates a write stream to the given table. More...
StatusOr< google::cloud::bigquery::storage::v1::WriteStream >	CreateWriteStream (google::cloud::bigquery::storage::v1::CreateWriteStreamRequest const &request, Options opts={})
	Creates a write stream to the given table. More...
std::unique_ptr<::google::cloud::AsyncStreamingReadWriteRpc< google::cloud::bigquery::storage::v1::AppendRowsRequest, google::cloud::bigquery::storage::v1::AppendRowsResponse > >	AsyncAppendRows (Options opts={})
	Appends data to the given stream. More...
StatusOr< google::cloud::bigquery::storage::v1::WriteStream >	GetWriteStream (std::string const &name, Options opts={})
	Gets information about a write stream. More...
StatusOr< google::cloud::bigquery::storage::v1::WriteStream >	GetWriteStream (google::cloud::bigquery::storage::v1::GetWriteStreamRequest const &request, Options opts={})
	Gets information about a write stream. More...
StatusOr< google::cloud::bigquery::storage::v1::FinalizeWriteStreamResponse >	FinalizeWriteStream (std::string const &name, Options opts={})
	Finalize a write stream so that no new data can be appended to the stream. More...
StatusOr< google::cloud::bigquery::storage::v1::FinalizeWriteStreamResponse >	FinalizeWriteStream (google::cloud::bigquery::storage::v1::FinalizeWriteStreamRequest const &request, Options opts={})
	Finalize a write stream so that no new data can be appended to the stream. More...
StatusOr< google::cloud::bigquery::storage::v1::BatchCommitWriteStreamsResponse >	BatchCommitWriteStreams (std::string const &parent, Options opts={})
	Atomically commits a group of PENDING streams that belong to the same parent table. More...
StatusOr< google::cloud::bigquery::storage::v1::BatchCommitWriteStreamsResponse >	BatchCommitWriteStreams (google::cloud::bigquery::storage::v1::BatchCommitWriteStreamsRequest const &request, Options opts={})
	Atomically commits a group of PENDING streams that belong to the same parent table. More...
StatusOr< google::cloud::bigquery::storage::v1::FlushRowsResponse >	FlushRows (std::string const &write_stream, Options opts={})
	Flushes rows to a BUFFERED stream. More...
StatusOr< google::cloud::bigquery::storage::v1::FlushRowsResponse >	FlushRows (google::cloud::bigquery::storage::v1::FlushRowsRequest const &request, Options opts={})
	Flushes rows to a BUFFERED stream. More...
Copy and move support
	BigQueryWriteClient (BigQueryWriteClient const &)=default
BigQueryWriteClient &	operator= (BigQueryWriteClient const &)=default
	BigQueryWriteClient (BigQueryWriteClient &&)=default
BigQueryWriteClient &	operator= (BigQueryWriteClient &&)=default

Friends
Equality
bool	operator== (BigQueryWriteClient const &a, BigQueryWriteClient const &b)
bool	operator!= (BigQueryWriteClient const &a, BigQueryWriteClient const &b)

Detailed Description

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

Equality

Instances of this class created via copy-construction or copy-assignment always compare equal. Instances created with equal std::shared_ptr<*Connection> objects compare equal. Objects that compare equal share the same underlying resources.

Performance

Creating a new instance of this class is a relatively expensive operation, new objects establish new connections to the service. In contrast, copy-construction, move-construction, and the corresponding assignment operations are relatively efficient as the copies share all underlying resources.

Thread Safety

Concurrent access to different instances of this class, even if they compare equal, is guaranteed to work. Two or more threads operating on the same instance of this class is not guaranteed to work. Since copy-construction and move-construction is a relatively efficient operation, consider using such a copy when using this class from multiple threads.

Constructor & Destructor Documentation

BigQueryWriteClient() [1/3]

google::cloud::bigquery_storage_v1::BigQueryWriteClient::BigQueryWriteClient ( std::shared_ptr< BigQueryWriteConnection >  connection, Options  opts = {}  )

explicit

~BigQueryWriteClient()

google::cloud::bigquery_storage_v1::BigQueryWriteClient::~BigQueryWriteClient

(

)

BigQueryWriteClient() [2/3]

google::cloud::bigquery_storage_v1::BigQueryWriteClient::BigQueryWriteClient ( BigQueryWriteClient const &  )

default

BigQueryWriteClient() [3/3]

google::cloud::bigquery_storage_v1::BigQueryWriteClient::BigQueryWriteClient ( BigQueryWriteClient &&  )

default

Member Function Documentation

AsyncAppendRows()

std::unique_ptr<::google::cloud::AsyncStreamingReadWriteRpc< google::cloud::bigquery::storage::v1::AppendRowsRequest, google::cloud::bigquery::storage::v1::AppendRowsResponse > > google::cloud::bigquery_storage_v1::BigQueryWriteClient::AsyncAppendRows

(

Options

opts = {}

)

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

opts	Optional. Override the class-level options, such as retry and backoff policies.

Returns

A bidirectional streaming interface with request (write) type: google::cloud::bigquery::storage::v1::AppendRowsRequest and response (read) type: google::cloud::bigquery::storage::v1::AppendRowsResponse

BatchCommitWriteStreams() [1/2]

StatusOr< google::cloud::bigquery::storage::v1::BatchCommitWriteStreamsResponse > google::cloud::bigquery_storage_v1::BigQueryWriteClient::BatchCommitWriteStreams	(	google::cloud::bigquery::storage::v1::BatchCommitWriteStreamsRequest const &	request,
		Options	opts = {}
	)

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

request	google::cloud::bigquery::storage::v1::BatchCommitWriteStreamsRequest
opts	Optional. Override the class-level options, such as retry and backoff policies.

Returns

google::cloud::bigquery::storage::v1::BatchCommitWriteStreamsResponse

BatchCommitWriteStreams() [2/2]

StatusOr< google::cloud::bigquery::storage::v1::BatchCommitWriteStreamsResponse > google::cloud::bigquery_storage_v1::BigQueryWriteClient::BatchCommitWriteStreams	(	std::string const &	parent,
		Options	opts = {}
	)

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

parent	Required. Parent table that all the streams should belong to, in the form of projects/{project}/datasets/{dataset}/tables/{table}.
opts	Optional. Override the class-level options, such as retry and backoff policies.

Returns

google::cloud::bigquery::storage::v1::BatchCommitWriteStreamsResponse

CreateWriteStream() [1/2]

StatusOr< google::cloud::bigquery::storage::v1::WriteStream > google::cloud::bigquery_storage_v1::BigQueryWriteClient::CreateWriteStream	(	google::cloud::bigquery::storage::v1::CreateWriteStreamRequest const &	request,
		Options	opts = {}
	)

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

request	google::cloud::bigquery::storage::v1::CreateWriteStreamRequest
opts	Optional. Override the class-level options, such as retry and backoff policies.

Returns

google::cloud::bigquery::storage::v1::WriteStream

CreateWriteStream() [2/2]

StatusOr< google::cloud::bigquery::storage::v1::WriteStream > google::cloud::bigquery_storage_v1::BigQueryWriteClient::CreateWriteStream	(	std::string const &	parent,
		google::cloud::bigquery::storage::v1::WriteStream const &	write_stream,
		Options	opts = {}
	)

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

parent	Required. Reference to the table to which the stream belongs, in the format of projects/{project}/datasets/{dataset}/tables/{table}.
write_stream	Required. Stream to be created.
opts	Optional. Override the class-level options, such as retry and backoff policies.

Returns

google::cloud::bigquery::storage::v1::WriteStream

FinalizeWriteStream() [1/2]

StatusOr< google::cloud::bigquery::storage::v1::FinalizeWriteStreamResponse > google::cloud::bigquery_storage_v1::BigQueryWriteClient::FinalizeWriteStream	(	google::cloud::bigquery::storage::v1::FinalizeWriteStreamRequest const &	request,
		Options	opts = {}
	)

Finalize a write stream so that no new data can be appended to the stream.

Finalize is not supported on the '_default' stream.

Parameters

request	google::cloud::bigquery::storage::v1::FinalizeWriteStreamRequest
opts	Optional. Override the class-level options, such as retry and backoff policies.

Returns

google::cloud::bigquery::storage::v1::FinalizeWriteStreamResponse

FinalizeWriteStream() [2/2]

StatusOr< google::cloud::bigquery::storage::v1::FinalizeWriteStreamResponse > google::cloud::bigquery_storage_v1::BigQueryWriteClient::FinalizeWriteStream	(	std::string const &	name,
		Options	opts = {}
	)

Finalize a write stream so that no new data can be appended to the stream.

Finalize is not supported on the '_default' stream.

Parameters

name	Required. Name of the stream to finalize, in the form of projects/{project}/datasets/{dataset}/tables/{table}/streams/{stream}.
opts	Optional. Override the class-level options, such as retry and backoff policies.

Returns

google::cloud::bigquery::storage::v1::FinalizeWriteStreamResponse

FlushRows() [1/2]

StatusOr< google::cloud::bigquery::storage::v1::FlushRowsResponse > google::cloud::bigquery_storage_v1::BigQueryWriteClient::FlushRows	(	google::cloud::bigquery::storage::v1::FlushRowsRequest const &	request,
		Options	opts = {}
	)

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

request	google::cloud::bigquery::storage::v1::FlushRowsRequest
opts	Optional. Override the class-level options, such as retry and backoff policies.

Returns

google::cloud::bigquery::storage::v1::FlushRowsResponse

FlushRows() [2/2]

StatusOr< google::cloud::bigquery::storage::v1::FlushRowsResponse > google::cloud::bigquery_storage_v1::BigQueryWriteClient::FlushRows	(	std::string const &	write_stream,
		Options	opts = {}
	)

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

write_stream	Required. The stream that is the target of the flush operation.
opts	Optional. Override the class-level options, such as retry and backoff policies.

Returns

google::cloud::bigquery::storage::v1::FlushRowsResponse

GetWriteStream() [1/2]

StatusOr< google::cloud::bigquery::storage::v1::WriteStream > google::cloud::bigquery_storage_v1::BigQueryWriteClient::GetWriteStream	(	google::cloud::bigquery::storage::v1::GetWriteStreamRequest const &	request,
		Options	opts = {}
	)

Gets information about a write stream.

Parameters

request	google::cloud::bigquery::storage::v1::GetWriteStreamRequest
opts	Optional. Override the class-level options, such as retry and backoff policies.

Returns

google::cloud::bigquery::storage::v1::WriteStream

GetWriteStream() [2/2]

StatusOr< google::cloud::bigquery::storage::v1::WriteStream > google::cloud::bigquery_storage_v1::BigQueryWriteClient::GetWriteStream	(	std::string const &	name,
		Options	opts = {}
	)

Gets information about a write stream.

Parameters

name	Required. Name of the stream to get, in the form of projects/{project}/datasets/{dataset}/tables/{table}/streams/{stream}.
opts	Optional. Override the class-level options, such as retry and backoff policies.

Returns

google::cloud::bigquery::storage::v1::WriteStream

operator=() [1/2]

BigQueryWriteClient & google::cloud::bigquery_storage_v1::BigQueryWriteClient::operator= ( BigQueryWriteClient &&  )

default

operator=() [2/2]

BigQueryWriteClient & google::cloud::bigquery_storage_v1::BigQueryWriteClient::operator= ( BigQueryWriteClient const &  )

default

Friends And Related Function Documentation

operator!=

bool operator!= ( BigQueryWriteClient const &  a, BigQueryWriteClient const &  b  )

friend

operator==

bool operator== ( BigQueryWriteClient const &  a, BigQueryWriteClient const &  b  )

friend