Google BigQuery Storage V1 Client - Class BigQueryWriteClient (1.4.1)

Reference documentation and code samples for the Google BigQuery Storage V1 Client class BigQueryWriteClient.

Service 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

This class provides the ability to make remote calls to the backing service through method calls that map to API methods. Sample code to get started:

$bigQueryWriteClient = new BigQueryWriteClient();
try {
    $writeStream = 'write_stream';
    $request = new AppendRowsRequest();
    $request->setWriteStream($writeStream);
    // Write all requests to the server, then read all responses until the
    // stream is complete
    $requests = [
        $request,
    ];
    $stream = $bigQueryWriteClient->appendRows();
    $stream->writeAll($requests);
    foreach ($stream->closeWriteAndReadAll() as $element) {
        // doSomethingWith($element);
    }
    // Alternatively:
    // Write requests individually, making read() calls if
    // required. Call closeWrite() once writes are complete, and read the
    // remaining responses from the server.
    $requests = [
        $request,
    ];
    $stream = $bigQueryWriteClient->appendRows();
    foreach ($requests as $request) {
        $stream->write($request);
        // if required, read a single response from the stream
        $element = $stream->read();
        // doSomethingWith($element)
    }
    $stream->closeWrite();
    $element = $stream->read();
    while (!is_null($element)) {
        // doSomethingWith($element)
        $element = $stream->read();
    }
} finally {
    $bigQueryWriteClient->close();
}

Many parameters require resource names to be formatted in a particular way. To assist with these names, this class includes a format method for each type of name, and additionally a parseName method to extract the individual identifiers contained within formatted names that are returned by the API.

This service has a new (beta) implementation. See Google\Cloud\BigQuery\Storage\V1\Client\BigQueryWriteClient to use the new surface.

Namespace

Google \ Cloud \ BigQuery \ Storage \ V1

Methods

__construct

Constructor.

Parameters
Name	Description
`options`	`array` Optional. Options for configuring the service API wrapper.
`↳ apiEndpoint`	`string` The address of the API remote host. May optionally include the port, formatted as "
`↳ credentials`	`string\|array\|FetchAuthTokenInterface\|CredentialsWrapper` The credentials to be used by the client to authorize API calls. This option accepts either a path to a credentials file, or a decoded credentials file as a PHP array. Advanced usage: In addition, this option can also accept a pre-constructed Google\Auth\FetchAuthTokenInterface object or Google\ApiCore\CredentialsWrapper object. Note that when one of these objects are provided, any settings in $credentialsConfig will be ignored.
`↳ credentialsConfig`	`array` Options used to configure credentials, including auth token caching, for the client. For a full list of supporting configuration options, see Google\ApiCore\CredentialsWrapper::build() .
`↳ disableRetries`	`bool` Determines whether or not retries defined by the client configuration should be disabled. Defaults to `false`.
`↳ clientConfig`	`string\|array` Client method configuration, including retry settings. This option can be either a path to a JSON file, or a PHP array containing the decoded JSON data. By default this settings points to the default client config file, which is provided in the resources folder.
`↳ transport`	`string\|TransportInterface` The transport used for executing network requests. May be either the string `rest` or `grpc`. Defaults to `grpc` if gRPC support is detected on the system. Advanced usage: Additionally, it is possible to pass in an already instantiated Google\ApiCore\Transport\TransportInterface object. Note that when this object is provided, any settings in $transportConfig, and any $apiEndpoint setting, will be ignored.
`↳ transportConfig`	`array` Configuration options that will be used to construct the transport. Options for each supported transport type should be passed in a key for that transport. For example: $transportConfig = [ 'grpc' => [...], 'rest' => [...], ]; See the Google\ApiCore\Transport\GrpcTransport::build() and Google\ApiCore\Transport\RestTransport::build() methods for the supported options.
`↳ clientCertSource`	`callable` A callable which returns the client cert as a string. This can be used to provide a certificate and private key to the transport layer for mTLS.

appendRows

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
Name	Description
`optionalArgs`	`array` Optional.
`↳ timeoutMillis`	`int` Timeout to use for this call.

Returns
Type	Description
`Google\ApiCore\BidiStream`

Example

use Google\ApiCore\ApiException;
use Google\ApiCore\BidiStream;
use Google\Cloud\BigQuery\Storage\V1\AppendRowsRequest;
use Google\Cloud\BigQuery\Storage\V1\AppendRowsResponse;
use Google\Cloud\BigQuery\Storage\V1\BigQueryWriteClient;

/**
 * @param string $formattedWriteStream The write_stream identifies the target of the append operation,
 *                                     and only needs to be specified as part of the first request on the gRPC
 *                                     connection. If provided for subsequent requests, it must match the value of
 *                                     the first request.
 *
 *                                     For explicitly created write streams, the format is:
 *
 *                                     * `projects/{project}/datasets/{dataset}/tables/{table}/streams/{id}`
 *
 *                                     For the special default stream, the format is:
 *
 *                                     * `projects/{project}/datasets/{dataset}/tables/{table}/streams/_default`. Please see
 *                                     {@see BigQueryWriteClient::writeStreamName()} for help formatting this field.
 */
function append_rows_sample(string $formattedWriteStream): void
{
    // Create a client.
    $bigQueryWriteClient = new BigQueryWriteClient();

    // Prepare any non-scalar elements to be passed along with the request.
    $request = (new AppendRowsRequest())
        ->setWriteStream($formattedWriteStream);

    // Call the API and handle any network failures.
    try {
        /** @var BidiStream $stream */
        $stream = $bigQueryWriteClient->appendRows();
        $stream->writeAll([$request,]);

        /** @var AppendRowsResponse $element */
        foreach ($stream->closeWriteAndReadAll() as $element) {
            printf('Element data: %s' . PHP_EOL, $element->serializeToJsonString());
        }
    } catch (ApiException $ex) {
        printf('Call failed with message: %s' . PHP_EOL, $ex->getMessage());
    }
}

/**
 * Helper to execute the sample.
 *
 * This sample 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,
 *    please see the apiEndpoint client configuration option for more details.
 */
function callSample(): void
{
    $formattedWriteStream = BigQueryWriteClient::writeStreamName(
        '[PROJECT]',
        '[DATASET]',
        '[TABLE]',
        '[STREAM]'
    );

    append_rows_sample($formattedWriteStream);
}

batchCommitWriteStreams

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
Name	Description
`parent`	`string` Required. Parent table that all the streams should belong to, in the form of `projects/{project}/datasets/{dataset}/tables/{table}`.
`writeStreams`	`string[]` Required. The group of streams that will be committed atomically.
`optionalArgs`	`array` Optional.
`↳ retrySettings`	`RetrySettings\|array` Retry settings to use for this call. Can be a Google\ApiCore\RetrySettings object, or an associative array of retry settings parameters. See the documentation on Google\ApiCore\RetrySettings for example usage.

Returns
Type	Description
`Google\Cloud\BigQuery\Storage\V1\BatchCommitWriteStreamsResponse`

Example

use Google\ApiCore\ApiException;
use Google\Cloud\BigQuery\Storage\V1\BatchCommitWriteStreamsResponse;
use Google\Cloud\BigQuery\Storage\V1\BigQueryWriteClient;

/**
 * @param string $formattedParent     Parent table that all the streams should belong to, in the form
 *                                    of `projects/{project}/datasets/{dataset}/tables/{table}`. Please see
 *                                    {@see BigQueryWriteClient::tableName()} for help formatting this field.
 * @param string $writeStreamsElement The group of streams that will be committed atomically.
 */
function batch_commit_write_streams_sample(
    string $formattedParent,
    string $writeStreamsElement
): void {
    // Create a client.
    $bigQueryWriteClient = new BigQueryWriteClient();

    // Prepare any non-scalar elements to be passed along with the request.
    $writeStreams = [$writeStreamsElement,];

    // Call the API and handle any network failures.
    try {
        /** @var BatchCommitWriteStreamsResponse $response */
        $response = $bigQueryWriteClient->batchCommitWriteStreams($formattedParent, $writeStreams);
        printf('Response data: %s' . PHP_EOL, $response->serializeToJsonString());
    } catch (ApiException $ex) {
        printf('Call failed with message: %s' . PHP_EOL, $ex->getMessage());
    }
}

/**
 * Helper to execute the sample.
 *
 * This sample 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,
 *    please see the apiEndpoint client configuration option for more details.
 */
function callSample(): void
{
    $formattedParent = BigQueryWriteClient::tableName('[PROJECT]', '[DATASET]', '[TABLE]');
    $writeStreamsElement = '[WRITE_STREAMS]';

    batch_commit_write_streams_sample($formattedParent, $writeStreamsElement);
}

createWriteStream

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
Name	Description
`parent`	`string` Required. Reference to the table to which the stream belongs, in the format of `projects/{project}/datasets/{dataset}/tables/{table}`.
`writeStream`	`Google\Cloud\BigQuery\Storage\V1\WriteStream` Required. Stream to be created.
`optionalArgs`	`array` Optional.
`↳ retrySettings`	`RetrySettings\|array` Retry settings to use for this call. Can be a Google\ApiCore\RetrySettings object, or an associative array of retry settings parameters. See the documentation on Google\ApiCore\RetrySettings for example usage.

Returns
Type	Description
`Google\Cloud\BigQuery\Storage\V1\WriteStream`

Example

use Google\ApiCore\ApiException;
use Google\Cloud\BigQuery\Storage\V1\BigQueryWriteClient;
use Google\Cloud\BigQuery\Storage\V1\WriteStream;

/**
 * @param string $formattedParent Reference to the table to which the stream belongs, in the format
 *                                of `projects/{project}/datasets/{dataset}/tables/{table}`. Please see
 *                                {@see BigQueryWriteClient::tableName()} for help formatting this field.
 */
function create_write_stream_sample(string $formattedParent): void
{
    // Create a client.
    $bigQueryWriteClient = new BigQueryWriteClient();

    // Prepare any non-scalar elements to be passed along with the request.
    $writeStream = new WriteStream();

    // Call the API and handle any network failures.
    try {
        /** @var WriteStream $response */
        $response = $bigQueryWriteClient->createWriteStream($formattedParent, $writeStream);
        printf('Response data: %s' . PHP_EOL, $response->serializeToJsonString());
    } catch (ApiException $ex) {
        printf('Call failed with message: %s' . PHP_EOL, $ex->getMessage());
    }
}

/**
 * Helper to execute the sample.
 *
 * This sample 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,
 *    please see the apiEndpoint client configuration option for more details.
 */
function callSample(): void
{
    $formattedParent = BigQueryWriteClient::tableName('[PROJECT]', '[DATASET]', '[TABLE]');

    create_write_stream_sample($formattedParent);
}

finalizeWriteStream

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	Description
`name`	`string` Required. Name of the stream to finalize, in the form of `projects/{project}/datasets/{dataset}/tables/{table}/streams/{stream}`.
`optionalArgs`	`array` Optional.
`↳ retrySettings`	`RetrySettings\|array` Retry settings to use for this call. Can be a Google\ApiCore\RetrySettings object, or an associative array of retry settings parameters. See the documentation on Google\ApiCore\RetrySettings for example usage.

Returns
Type	Description
`Google\Cloud\BigQuery\Storage\V1\FinalizeWriteStreamResponse`

Example

use Google\ApiCore\ApiException;
use Google\Cloud\BigQuery\Storage\V1\BigQueryWriteClient;
use Google\Cloud\BigQuery\Storage\V1\FinalizeWriteStreamResponse;

/**
 * @param string $formattedName Name of the stream to finalize, in the form of
 *                              `projects/{project}/datasets/{dataset}/tables/{table}/streams/{stream}`. Please see
 *                              {@see BigQueryWriteClient::writeStreamName()} for help formatting this field.
 */
function finalize_write_stream_sample(string $formattedName): void
{
    // Create a client.
    $bigQueryWriteClient = new BigQueryWriteClient();

    // Call the API and handle any network failures.
    try {
        /** @var FinalizeWriteStreamResponse $response */
        $response = $bigQueryWriteClient->finalizeWriteStream($formattedName);
        printf('Response data: %s' . PHP_EOL, $response->serializeToJsonString());
    } catch (ApiException $ex) {
        printf('Call failed with message: %s' . PHP_EOL, $ex->getMessage());
    }
}

/**
 * Helper to execute the sample.
 *
 * This sample 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,
 *    please see the apiEndpoint client configuration option for more details.
 */
function callSample(): void
{
    $formattedName = BigQueryWriteClient::writeStreamName(
        '[PROJECT]',
        '[DATASET]',
        '[TABLE]',
        '[STREAM]'
    );

    finalize_write_stream_sample($formattedName);
}

flushRows

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
Name	Description
`writeStream`	`string` Required. The stream that is the target of the flush operation.
`optionalArgs`	`array` Optional.
`↳ offset`	`Int64Value` Ending offset of the flush operation. Rows before this offset(including this offset) will be flushed.
`↳ retrySettings`	`RetrySettings\|array` Retry settings to use for this call. Can be a Google\ApiCore\RetrySettings object, or an associative array of retry settings parameters. See the documentation on Google\ApiCore\RetrySettings for example usage.

Returns
Type	Description
`Google\Cloud\BigQuery\Storage\V1\FlushRowsResponse`

Example

use Google\ApiCore\ApiException;
use Google\Cloud\BigQuery\Storage\V1\BigQueryWriteClient;
use Google\Cloud\BigQuery\Storage\V1\FlushRowsResponse;

/**
 * @param string $formattedWriteStream The stream that is the target of the flush operation. Please see
 *                                     {@see BigQueryWriteClient::writeStreamName()} for help formatting this field.
 */
function flush_rows_sample(string $formattedWriteStream): void
{
    // Create a client.
    $bigQueryWriteClient = new BigQueryWriteClient();

    // Call the API and handle any network failures.
    try {
        /** @var FlushRowsResponse $response */
        $response = $bigQueryWriteClient->flushRows($formattedWriteStream);
        printf('Response data: %s' . PHP_EOL, $response->serializeToJsonString());
    } catch (ApiException $ex) {
        printf('Call failed with message: %s' . PHP_EOL, $ex->getMessage());
    }
}

/**
 * Helper to execute the sample.
 *
 * This sample 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,
 *    please see the apiEndpoint client configuration option for more details.
 */
function callSample(): void
{
    $formattedWriteStream = BigQueryWriteClient::writeStreamName(
        '[PROJECT]',
        '[DATASET]',
        '[TABLE]',
        '[STREAM]'
    );

    flush_rows_sample($formattedWriteStream);
}

getWriteStream

Gets information about a write stream.

Parameters
Name	Description
`name`	`string` Required. Name of the stream to get, in the form of `projects/{project}/datasets/{dataset}/tables/{table}/streams/{stream}`.
`optionalArgs`	`array` Optional.
`↳ view`	`int` Indicates whether to get full or partial view of the WriteStream. If not set, view returned will be basic. For allowed values, use constants defined on Google\Cloud\BigQuery\Storage\V1\WriteStreamView
`↳ retrySettings`	`RetrySettings\|array` Retry settings to use for this call. Can be a Google\ApiCore\RetrySettings object, or an associative array of retry settings parameters. See the documentation on Google\ApiCore\RetrySettings for example usage.

Returns
Type	Description
`Google\Cloud\BigQuery\Storage\V1\WriteStream`

Example

use Google\ApiCore\ApiException;
use Google\Cloud\BigQuery\Storage\V1\BigQueryWriteClient;
use Google\Cloud\BigQuery\Storage\V1\WriteStream;

/**
 * @param string $formattedName Name of the stream to get, in the form of
 *                              `projects/{project}/datasets/{dataset}/tables/{table}/streams/{stream}`. Please see
 *                              {@see BigQueryWriteClient::writeStreamName()} for help formatting this field.
 */
function get_write_stream_sample(string $formattedName): void
{
    // Create a client.
    $bigQueryWriteClient = new BigQueryWriteClient();

    // Call the API and handle any network failures.
    try {
        /** @var WriteStream $response */
        $response = $bigQueryWriteClient->getWriteStream($formattedName);
        printf('Response data: %s' . PHP_EOL, $response->serializeToJsonString());
    } catch (ApiException $ex) {
        printf('Call failed with message: %s' . PHP_EOL, $ex->getMessage());
    }
}

/**
 * Helper to execute the sample.
 *
 * This sample 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,
 *    please see the apiEndpoint client configuration option for more details.
 */
function callSample(): void
{
    $formattedName = BigQueryWriteClient::writeStreamName(
        '[PROJECT]',
        '[DATASET]',
        '[TABLE]',
        '[STREAM]'
    );

    get_write_stream_sample($formattedName);
}

static::tableName

Formats a string containing the fully-qualified path to represent a table resource.

Parameters
Name	Description
`project`	`string`
`dataset`	`string`
`table`	`string`

Returns
Type	Description
`string`	The formatted table resource.

static::writeStreamName

Formats a string containing the fully-qualified path to represent a write_stream resource.

Parameters
Name	Description
`project`	`string`
`dataset`	`string`
`table`	`string`
`stream`	`string`

Returns
Type	Description
`string`	The formatted write_stream resource.

static::parseName

Parses a formatted name string and returns an associative array of the components in the name.

The following name formats are supported: Template: Pattern

table: projects/{project}/datasets/{dataset}/tables/{table}
writeStream: projects/{project}/datasets/{dataset}/tables/{table}/streams/{stream}

The optional $template argument can be supplied to specify a particular pattern, and must match one of the templates listed above. If no $template argument is provided, or if the $template argument does not match one of the templates listed, then parseName will check each of the supported templates, and return the first match.

Parameters
Name	Description
`formattedName`	`string` The formatted name string
`template`	`string` Optional name of template to match

Returns
Type	Description
`array`	An associative array from name component IDs to component values.

Constants

SERVICE_NAME

Value: 'google.cloud.bigquery.storage.v1.BigQueryWrite'

The name of the service.

SERVICE_ADDRESS

Value: 'bigquerystorage.googleapis.com'

The default address of the service.

DEFAULT_SERVICE_PORT

Value: 443

The default port of the service.

CODEGEN_NAME

Value: 'gapic'

The name of the code generator, to be included in the agent header.