As of January 1, 2020 this library no longer supports Python 2 on the latest released version. Library versions released prior to that date will continue to be available. For more information please visit Python 2 support on Google Cloud.

Bigtable Data Client Async

class google.cloud.bigtable.data._async.client.BigtableDataClientAsync(*, project: str | None = None, pool_size: int = 3, credentials: google.auth.credentials.Credentials | None = None, client_options: dict[str, Any] | 'google.api_core.client_options.ClientOptions' | None = None)

Bases: google.cloud.client.ClientWithProject

Create a client instance for the Bigtable Data API

Client should be created within an async context (running event loop)

Parameters

• project – the project which the client acts on behalf of. If not passed, falls back to the default inferred from the environment.

• pool_size – The number of grpc channels to maintain in the internal channel pool.

• credentials – Thehe OAuth2 Credentials to use for this client. If not passed (and if no _http object is passed), falls back to the default inferred from the environment.

• client_options (Optional[Union[dict, google.api_core.client_options.ClientOptions]]) – Client options used to set user options on the client. API Endpoint should be set through client_options.

Raises

• - RuntimeError if called outside of an async context (no running event loop) –

• - ValueError if pool_size is less than 1 –

async close(timeout: float = 2.0)

Cancel all background tasks

get_table(instance_id: str, table_id: str, *args, **kwargs) → google.cloud.bigtable.data._async.client.TableAsync

Returns a table instance for making data API requests. All arguments are passed directly to the TableAsync constructor.

Parameters

• instance_id – The Bigtable instance ID to associate with this client. instance_id is combined with the client’s project to fully specify the instance

• table_id – The ID of the table. table_id is combined with the instance_id and the client’s project to fully specify the table

• app_profile_id – The app profile to associate with requests. https://cloud.google.com/bigtable/docs/app-profiles

• default_read_rows_operation_timeout – The default timeout for read rows operations, in seconds. If not set, defaults to 600 seconds (10 minutes)

• default_read_rows_attempt_timeout – The default timeout for individual read rows rpc requests, in seconds. If not set, defaults to 20 seconds

• default_mutate_rows_operation_timeout – The default timeout for mutate rows operations, in seconds. If not set, defaults to 600 seconds (10 minutes)

• default_mutate_rows_attempt_timeout – The default timeout for individual mutate rows rpc requests, in seconds. If not set, defaults to 60 seconds

• default_operation_timeout – The default timeout for all other operations, in seconds. If not set, defaults to 60 seconds

• default_attempt_timeout – The default timeout for all other individual rpc requests, in seconds. If not set, defaults to 20 seconds

• default_read_rows_retryable_errors – a list of errors that will be retried if encountered during read_rows and related operations. Defaults to 4 (DeadlineExceeded), 14 (ServiceUnavailable), and 10 (Aborted)

• default_mutate_rows_retryable_errors – a list of errors that will be retried if encountered during mutate_rows and related operations. Defaults to 4 (DeadlineExceeded) and 14 (ServiceUnavailable)

• default_retryable_errors – a list of errors that will be retried if encountered during all other operations. Defaults to 4 (DeadlineExceeded) and 14 (ServiceUnavailable)

class google.cloud.bigtable.data._async.client.TableAsync(client: BigtableDataClientAsync, instance_id: str, table_id: str, app_profile_id: str | None = None, *, default_read_rows_operation_timeout: float = 600, default_read_rows_attempt_timeout: float | None = 20, default_mutate_rows_operation_timeout: float = 600, default_mutate_rows_attempt_timeout: float | None = 60, default_operation_timeout: float = 60, default_attempt_timeout: float | None = 20, default_read_rows_retryable_errors: Sequence[type[Exception]] = (<class 'google.api_core.exceptions.DeadlineExceeded'>, <class 'google.api_core.exceptions.ServiceUnavailable'>, <class 'google.api_core.exceptions.Aborted'>), default_mutate_rows_retryable_errors: Sequence[type[Exception]] = (<class 'google.api_core.exceptions.DeadlineExceeded'>, <class 'google.api_core.exceptions.ServiceUnavailable'>), default_retryable_errors: Sequence[type[Exception]] = (<class 'google.api_core.exceptions.DeadlineExceeded'>, <class 'google.api_core.exceptions.ServiceUnavailable'>))

Bases: object

Main Data API surface

Table object maintains table_id, and app_profile_id context, and passes them with each call

Initialize a Table instance

Must be created within an async context (running event loop)

Parameters

• instance_id – The Bigtable instance ID to associate with this client. instance_id is combined with the client’s project to fully specify the instance

• table_id – The ID of the table. table_id is combined with the instance_id and the client’s project to fully specify the table

• app_profile_id – The app profile to associate with requests. https://cloud.google.com/bigtable/docs/app-profiles

• default_read_rows_operation_timeout – The default timeout for read rows operations, in seconds. If not set, defaults to 600 seconds (10 minutes)

• default_read_rows_attempt_timeout – The default timeout for individual read rows rpc requests, in seconds. If not set, defaults to 20 seconds

• default_mutate_rows_operation_timeout – The default timeout for mutate rows operations, in seconds. If not set, defaults to 600 seconds (10 minutes)

• default_mutate_rows_attempt_timeout – The default timeout for individual mutate rows rpc requests, in seconds. If not set, defaults to 60 seconds

• default_operation_timeout – The default timeout for all other operations, in seconds. If not set, defaults to 60 seconds

• default_attempt_timeout – The default timeout for all other individual rpc requests, in seconds. If not set, defaults to 20 seconds

• default_read_rows_retryable_errors – a list of errors that will be retried if encountered during read_rows and related operations. Defaults to 4 (DeadlineExceeded), 14 (ServiceUnavailable), and 10 (Aborted)

• default_mutate_rows_retryable_errors – a list of errors that will be retried if encountered during mutate_rows and related operations. Defaults to 4 (DeadlineExceeded) and 14 (ServiceUnavailable)

• default_retryable_errors – a list of errors that will be retried if encountered during all other operations. Defaults to 4 (DeadlineExceeded) and 14 (ServiceUnavailable)

Raises

- RuntimeError if called outside of an async context (no running event loop) –

async __aenter__()

Implement async context manager protocol

Ensure registration task has time to run, so that grpc channels will be warmed for the specified instance

async __aexit__(exc_type, exc_val, exc_tb)

Implement async context manager protocol

Unregister this instance with the client, so that grpc channels will no longer be warmed

async bulk_mutate_rows(mutation_entries: list[RowMutationEntry], *, operation_timeout: float | TABLE_DEFAULT = TABLE_DEFAULT.MUTATE_ROWS, attempt_timeout: float | None | TABLE_DEFAULT = TABLE_DEFAULT.MUTATE_ROWS, retryable_errors: Sequence[type[Exception]] | TABLE_DEFAULT = TABLE_DEFAULT.MUTATE_ROWS)

Applies mutations for multiple rows in a single batched request.

Each individual RowMutationEntry is applied atomically, but separate entries may be applied in arbitrary order (even for entries targetting the same row) In total, the row_mutations can contain at most 100000 individual mutations across all entries

Idempotent entries (i.e., entries with mutations with explicit timestamps) will be retried on failure. Non-idempotent will not, and will reported in a raised exception group

Parameters

• mutation_entries (-) – the batches of mutations to apply Each entry will be applied atomically, but entries will be applied in arbitrary order

• operation_timeout (-) – the time budget for the entire operation, in seconds. Failed requests will be retried within the budget. Defaults to the Table’s default_mutate_rows_operation_timeout

• attempt_timeout (-) – the time budget for an individual network request, in seconds. If it takes longer than this time to complete, the request will be cancelled with a DeadlineExceeded exception, and a retry will be attempted. Defaults to the Table’s default_mutate_rows_attempt_timeout. If None, defaults to operation_timeout.

• retryable_errors (-) – a list of errors that will be retried if encountered. Defaults to the Table’s default_mutate_rows_retryable_errors

Raises

• - MutationsExceptionGroup if one or more mutations fails – Contains details about any failed entries in .exceptions

• - ValueError if invalid arguments are provided –

async check_and_mutate_row(row_key: str | bytes, predicate: RowFilter | None, *, true_case_mutations: Mutation | list[Mutation] | None = None, false_case_mutations: Mutation | list[Mutation] | None = None, operation_timeout: float | TABLE_DEFAULT = TABLE_DEFAULT.DEFAULT) → bool

Mutates a row atomically based on the output of a predicate filter

Non-idempotent operation: will not be retried

Parameters

• row_key (-) – the key of the row to mutate

• predicate (-) – the filter to be applied to the contents of the specified row. Depending on whether or not any results are yielded, either true_case_mutations or false_case_mutations will be executed. If None, checks that the row contains any values at all.

• true_case_mutations (-) – Changes to be atomically applied to the specified row if predicate yields at least one cell when applied to row_key. Entries are applied in order, meaning that earlier mutations can be masked by later ones. Must contain at least one entry if false_case_mutations is empty, and at most 100000.

• false_case_mutations (-) – Changes to be atomically applied to the specified row if predicate_filter does not yield any cells when applied to row_key. Entries are applied in order, meaning that earlier mutations can be masked by later ones. Must contain at least one entry if true_case_mutations is empty, and at most 100000.

• operation_timeout (-) – the time budget for the entire operation, in seconds. Failed requests will not be retried. Defaults to the Table’s default_operation_timeout

Returns

• bool indicating whether the predicate was true or false

Raises

- GoogleAPIError exceptions from grpc call –

async close()

Called to close the Table instance and release any resources held by it.

async mutate_row(row_key: str | bytes, mutations: list[Mutation] | Mutation, *, operation_timeout: float | TABLE_DEFAULT = TABLE_DEFAULT.DEFAULT, attempt_timeout: float | None | TABLE_DEFAULT = TABLE_DEFAULT.DEFAULT, retryable_errors: Sequence[type[Exception]] | TABLE_DEFAULT = TABLE_DEFAULT.DEFAULT)

Mutates a row atomically.

Cells already present in the row are left unchanged unless explicitly changed by mutation.

Idempotent operations (i.e, all mutations have an explicit timestamp) will be retried on server failure. Non-idempotent operations will not.

Parameters

• row_key (-) – the row to apply mutations to

• mutations (-) – the set of mutations to apply to the row

• operation_timeout (-) – the time budget for the entire operation, in seconds. Failed requests will be retried within the budget. Defaults to the Table’s default_operation_timeout

• attempt_timeout (-) – the time budget for an individual network request, in seconds. If it takes longer than this time to complete, the request will be cancelled with a DeadlineExceeded exception, and a retry will be attempted. Defaults to the Table’s default_attempt_timeout. If None, defaults to operation_timeout.

• retryable_errors (-) – a list of errors that will be retried if encountered. Only idempotent mutations will be retried. Defaults to the Table’s default_retryable_errors.

Raises

• - DeadlineExceeded – raised after operation timeout will be chained with a RetryExceptionGroup containing all GoogleAPIError exceptions from any retries that failed

• - GoogleAPIError –

  raised on non-idempotent operations that cannot be safely retried.

  • ValueError if invalid arguments are provided

mutations_batcher(*, flush_interval: float | None = 5, flush_limit_mutation_count: int | None = 1000, flush_limit_bytes: int = 20971520, flow_control_max_mutation_count: int = 100000, flow_control_max_bytes: int = 104857600, batch_operation_timeout: float | TABLE_DEFAULT = TABLE_DEFAULT.MUTATE_ROWS, batch_attempt_timeout: float | None | TABLE_DEFAULT = TABLE_DEFAULT.MUTATE_ROWS, batch_retryable_errors: Sequence[type[Exception]] | TABLE_DEFAULT = TABLE_DEFAULT.MUTATE_ROWS) → MutationsBatcherAsync

Returns a new mutations batcher instance.

Can be used to iteratively add mutations that are flushed as a group, to avoid excess network calls

Parameters

• flush_interval (-) – Automatically flush every flush_interval seconds. If None, a table default will be used

• flush_limit_mutation_count (-) – Flush immediately after flush_limit_mutation_count mutations are added across all entries. If None, this limit is ignored.

• flush_limit_bytes (-) – Flush immediately after flush_limit_bytes bytes are added.

• flow_control_max_mutation_count (-) – Maximum number of inflight mutations.

• flow_control_max_bytes (-) – Maximum number of inflight bytes.

• batch_operation_timeout (-) – timeout for each mutate_rows operation, in seconds. Defaults to the Table’s default_mutate_rows_operation_timeout

• batch_attempt_timeout (-) – timeout for each individual request, in seconds. Defaults to the Table’s default_mutate_rows_attempt_timeout. If None, defaults to batch_operation_timeout.

• batch_retryable_errors (-) – a list of errors that will be retried if encountered. Defaults to the Table’s default_mutate_rows_retryable_errors.

Returns

• a MutationsBatcherAsync context manager that can batch requests

async read_modify_write_row(row_key: str | bytes, rules: ReadModifyWriteRule | list[ReadModifyWriteRule], *, operation_timeout: float | TABLE_DEFAULT = TABLE_DEFAULT.DEFAULT) → Row

Reads and modifies a row atomically according to input ReadModifyWriteRules, and returns the contents of all modified cells

The new value for the timestamp is the greater of the existing timestamp or the current server time.

Non-idempotent operation: will not be retried

Parameters

• row_key (-) – the key of the row to apply read/modify/write rules to

• rules (-) – A rule or set of rules to apply to the row. Rules are applied in order, meaning that earlier rules will affect the results of later ones.

• operation_timeout (-) – the time budget for the entire operation, in seconds. Failed requests will not be retried. Defaults to the Table’s default_operation_timeout.

Returns

containing cell data that was modified as part of the

operation

Return type

• Row

Raises

• - GoogleAPIError exceptions from grpc call –

• - ValueError if invalid arguments are provided –

async read_row(row_key: str | bytes, *, row_filter: RowFilter | None = None, operation_timeout: float | TABLE_DEFAULT = TABLE_DEFAULT.READ_ROWS, attempt_timeout: float | None | TABLE_DEFAULT = TABLE_DEFAULT.READ_ROWS, retryable_errors: Sequence[type[Exception]] | TABLE_DEFAULT = TABLE_DEFAULT.READ_ROWS) → Row | None

Read a single row from the table, based on the specified key.

Failed requests within operation_timeout will be retried based on the retryable_errors list until operation_timeout is reached.

Parameters

• query (-) – contains details about which rows to return

• operation_timeout (-) – the time budget for the entire operation, in seconds. Failed requests will be retried within the budget. Defaults to the Table’s default_read_rows_operation_timeout

• attempt_timeout (-) – the time budget for an individual network request, in seconds. If it takes longer than this time to complete, the request will be cancelled with a DeadlineExceeded exception, and a retry will be attempted. Defaults to the Table’s default_read_rows_attempt_timeout. If None, defaults to operation_timeout.

• retryable_errors (-) – a list of errors that will be retried if encountered. Defaults to the Table’s default_read_rows_retryable_errors.

Returns

• a Row object if the row exists, otherwise None

Raises

• - DeadlineExceeded – raised after operation timeout will be chained with a RetryExceptionGroup containing GoogleAPIError exceptions from any retries that failed

• - GoogleAPIError – raised if the request encounters an unrecoverable error

async read_rows(query: ReadRowsQuery, *, operation_timeout: float | TABLE_DEFAULT = TABLE_DEFAULT.READ_ROWS, attempt_timeout: float | None | TABLE_DEFAULT = TABLE_DEFAULT.READ_ROWS, retryable_errors: Sequence[type[Exception]] | TABLE_DEFAULT = TABLE_DEFAULT.READ_ROWS) → list[Row]

Read a set of rows from the table, based on the specified query. Retruns results as a list of Row objects when the request is complete. For streamed results, use read_rows_stream.

Failed requests within operation_timeout will be retried based on the retryable_errors list until operation_timeout is reached.

Parameters

• query (-) – contains details about which rows to return

• operation_timeout (-) – the time budget for the entire operation, in seconds. Failed requests will be retried within the budget. Defaults to the Table’s default_read_rows_operation_timeout

• attempt_timeout (-) – the time budget for an individual network request, in seconds. If it takes longer than this time to complete, the request will be cancelled with a DeadlineExceeded exception, and a retry will be attempted. Defaults to the Table’s default_read_rows_attempt_timeout. If None, defaults to operation_timeout. If None, defaults to the Table’s default_read_rows_attempt_timeout, or the operation_timeout if that is also None.

• retryable_errors (-) – a list of errors that will be retried if encountered. Defaults to the Table’s default_read_rows_retryable_errors.

Returns

• a list of Rows returned by the query

Raises

• - DeadlineExceeded – raised after operation timeout will be chained with a RetryExceptionGroup containing GoogleAPIError exceptions from any retries that failed

• - GoogleAPIError – raised if the request encounters an unrecoverable error

async read_rows_sharded(sharded_query: ShardedQuery, *, operation_timeout: float | TABLE_DEFAULT = TABLE_DEFAULT.READ_ROWS, attempt_timeout: float | None | TABLE_DEFAULT = TABLE_DEFAULT.READ_ROWS, retryable_errors: Sequence[type[Exception]] | TABLE_DEFAULT = TABLE_DEFAULT.READ_ROWS) → list[Row]

Runs a sharded query in parallel, then return the results in a single list. Results will be returned in the order of the input queries.

This function is intended to be run on the results on a query.shard() call:

` table_shard_keys = await table.sample_row_keys() query = ReadRowsQuery(...) shard_queries = query.shard(table_shard_keys) results = await table.read_rows_sharded(shard_queries) `

Parameters

• sharded_query (-) – a sharded query to execute

• operation_timeout (-) – the time budget for the entire operation, in seconds. Failed requests will be retried within the budget. Defaults to the Table’s default_read_rows_operation_timeout

• attempt_timeout (-) – the time budget for an individual network request, in seconds. If it takes longer than this time to complete, the request will be cancelled with a DeadlineExceeded exception, and a retry will be attempted. Defaults to the Table’s default_read_rows_attempt_timeout. If None, defaults to operation_timeout.

• retryable_errors (-) – a list of errors that will be retried if encountered. Defaults to the Table’s default_read_rows_retryable_errors.

Raises

• - ShardedReadRowsExceptionGroup – if any of the queries failed

• - ValueError – if the query_list is empty

async read_rows_stream(query: ReadRowsQuery, *, operation_timeout: float | TABLE_DEFAULT = TABLE_DEFAULT.READ_ROWS, attempt_timeout: float | None | TABLE_DEFAULT = TABLE_DEFAULT.READ_ROWS, retryable_errors: Sequence[type[Exception]] | TABLE_DEFAULT = TABLE_DEFAULT.READ_ROWS) → AsyncIterable[Row]

Read a set of rows from the table, based on the specified query. Returns an iterator to asynchronously stream back row data.

Failed requests within operation_timeout will be retried based on the retryable_errors list until operation_timeout is reached.

Parameters

• query (-) – contains details about which rows to return

• operation_timeout (-) – the time budget for the entire operation, in seconds. Failed requests will be retried within the budget. Defaults to the Table’s default_read_rows_operation_timeout

• attempt_timeout (-) – the time budget for an individual network request, in seconds. If it takes longer than this time to complete, the request will be cancelled with a DeadlineExceeded exception, and a retry will be attempted. Defaults to the Table’s default_read_rows_attempt_timeout. If None, defaults to operation_timeout.

• retryable_errors (-) – a list of errors that will be retried if encountered. Defaults to the Table’s default_read_rows_retryable_errors

Returns

• an asynchronous iterator that yields rows returned by the query

Raises

• - DeadlineExceeded – raised after operation timeout will be chained with a RetryExceptionGroup containing GoogleAPIError exceptions from any retries that failed

• - GoogleAPIError – raised if the request encounters an unrecoverable error

async row_exists(row_key: str | bytes, *, operation_timeout: float | TABLE_DEFAULT = TABLE_DEFAULT.READ_ROWS, attempt_timeout: float | None | TABLE_DEFAULT = TABLE_DEFAULT.READ_ROWS, retryable_errors: Sequence[type[Exception]] | TABLE_DEFAULT = TABLE_DEFAULT.READ_ROWS) → bool

Return a boolean indicating whether the specified row exists in the table. uses the filters: chain(limit cells per row = 1, strip value)

Parameters

• row_key (-) – the key of the row to check

• operation_timeout (-) – the time budget for the entire operation, in seconds. Failed requests will be retried within the budget. Defaults to the Table’s default_read_rows_operation_timeout

• attempt_timeout (-) – the time budget for an individual network request, in seconds. If it takes longer than this time to complete, the request will be cancelled with a DeadlineExceeded exception, and a retry will be attempted. Defaults to the Table’s default_read_rows_attempt_timeout. If None, defaults to operation_timeout.

• retryable_errors (-) – a list of errors that will be retried if encountered. Defaults to the Table’s default_read_rows_retryable_errors.

Returns

• a bool indicating whether the row exists

Raises

• - DeadlineExceeded – raised after operation timeout will be chained with a RetryExceptionGroup containing GoogleAPIError exceptions from any retries that failed

• - GoogleAPIError – raised if the request encounters an unrecoverable error

async sample_row_keys(*, operation_timeout: float | TABLE_DEFAULT = TABLE_DEFAULT.DEFAULT, attempt_timeout: float | None | TABLE_DEFAULT = TABLE_DEFAULT.DEFAULT, retryable_errors: Sequence[type[Exception]] | TABLE_DEFAULT = TABLE_DEFAULT.DEFAULT) → RowKeySamples

Return a set of RowKeySamples that delimit contiguous sections of the table of approximately equal size

RowKeySamples output can be used with ReadRowsQuery.shard() to create a sharded query that can be parallelized across multiple backend nodes read_rows and read_rows_stream requests will call sample_row_keys internally for this purpose when sharding is enabled

RowKeySamples is simply a type alias for list[tuple[bytes, int]]; a list of

row_keys, along with offset positions in the table

Parameters

• operation_timeout (-) – the time budget for the entire operation, in seconds. Failed requests will be retried within the budget.i Defaults to the Table’s default_operation_timeout

• attempt_timeout (-) – the time budget for an individual network request, in seconds. If it takes longer than this time to complete, the request will be cancelled with a DeadlineExceeded exception, and a retry will be attempted. Defaults to the Table’s default_attempt_timeout. If None, defaults to operation_timeout.

• retryable_errors (-) – a list of errors that will be retried if encountered. Defaults to the Table’s default_retryable_errors.

Returns

• a set of RowKeySamples the delimit contiguous sections of the table

Raises

• - DeadlineExceeded – raised after operation timeout will be chained with a RetryExceptionGroup containing GoogleAPIError exceptions from any retries that failed

• - GoogleAPIError – raised if the request encounters an unrecoverable error