Client

Parent client for calling the Google Cloud Bigtable API.

This is the base from which all interactions with the API occur.

In the hierarchy of API concepts

google.cloud.bigtable.client.ADMIN_SCOPE( = 'https://www.googleapis.com/auth/bigtable.admin )

Scope for interacting with the Cluster Admin and Table Admin APIs.

class google.cloud.bigtable.client.Client(project=None, credentials=None, read_only=False, admin=False, client_info=None, client_options=None, admin_client_options=None, channel=None)

Bases: google.cloud.client.ClientWithProject

Client for interacting with Google Cloud Bigtable API.

NOTE: Since the Cloud Bigtable API requires the gRPC transport, no _http argument is accepted by this class.

  • Parameters

    • project (str or unicode) – (Optional) The ID of the project which owns the instances, tables and data. If not provided, will attempt to determine from the environment.

    • credentials (Credentials) – (Optional) The OAuth2 Credentials to use for this client. If not passed, falls back to the default inferred from the environment.

    • read_only (bool) – (Optional) Boolean indicating if the data scope should be for reading only (or for writing as well). Defaults to False.

    • admin (bool) – (Optional) Boolean indicating if the client will be used to interact with the Instance Admin or Table Admin APIs. This requires the ADMIN_SCOPE. Defaults to False.

    • client_info – 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 library or partner tool.

    • client_options (ClientOptions or dict) – (Optional) Client options used to set user options on the client. API Endpoint should be set through client_options.

    • admin_client_options (ClientOptions or dict) – (Optional) Client options used to set user options on the client. API Endpoint for admin operations should be set through admin_client_options.

    • (grpc.Channel) (channel) – (Optional) DEPRECATED: A Channel instance through which to make calls. This argument is mutually exclusive with credentials; providing both will raise an exception. No longer used.

  • Type

    client_info: google.api_core.gapic_v1.client_info.ClientInfo

  • Raises

    ValueError if both read_only and admin are True

instance(instance_id, display_name=None, instance_type=None, labels=None)

Factory to create a instance associated with this client.

For example:

from google.cloud.bigtable import Client
from google.cloud.bigtable import enums

my_instance_id = "inst-my-" + UNIQUE_SUFFIX
my_cluster_id = "clus-my-" + UNIQUE_SUFFIX
location_id = "us-central1-f"
serve_nodes = 1
storage_type = enums.StorageType.SSD
production = enums.Instance.Type.PRODUCTION
labels = {"prod-label": "prod-label"}

client = Client(admin=True)
instance = client.instance(my_instance_id, instance_type=production, labels=labels)
cluster = instance.cluster(
    my_cluster_id,
    location_id=location_id,
    serve_nodes=serve_nodes,
    default_storage_type=storage_type,
)
operation = instance.create(clusters=[cluster])

# We want to make sure the operation completes.
operation.result(timeout=100)

  • Parameters

    • instance_id (str) – The ID of the instance.

    • display_name (str) – (Optional) The display name for the instance in the Cloud Console UI. (Must be between 4 and 30 characters.) If this value is not set in the constructor, will fall back to the instance ID.

    • instance_type (int) – (Optional) The type of the instance. Possible values are represented by the following constants: google.cloud.bigtable.instance.InstanceType.PRODUCTION. google.cloud.bigtable.instance.InstanceType.DEVELOPMENT, Defaults to google.cloud.bigtable.instance.InstanceType.UNSPECIFIED.

    • labels (dict) – (Optional) Labels are a flexible and lightweight mechanism for organizing cloud resources into groups that reflect a customer’s organizational needs and deployment strategies. They can be used to filter resources and aggregate metrics. Label keys must be between 1 and 63 characters long. Maximum 64 labels can be associated with a given resource. Label values must be between 0 and 63 characters long. Keys and values must both be under 128 bytes.

  • Return type

    Instance

  • Returns

    an instance owned by this client.

property instance_admin_client()

Getter for the gRPC stub used for the Table Admin API.

For example:

from google.cloud.bigtable import Client

client = Client(admin=True)
instance_admin_client = client.instance_admin_client

  • Return type

    bigtable_admin_pb2.BigtableInstanceAdmin

  • Returns

    A BigtableInstanceAdmin instance.

  • Raises

    ValueError if the current client is not an admin client or if it has not been start()-ed.

list_clusters()

List the clusters in the project.

For example:

from google.cloud.bigtable import Client

client = Client(admin=True)
(clusters_list, failed_locations_list) = client.list_clusters()

  • Return type

    tuple

  • Returns

    (clusters, failed_locations), where ‘clusters’ is list of google.cloud.bigtable.instance.Cluster, and ‘failed_locations’ is a list of strings representing locations which could not be resolved.

list_instances()

List instances owned by the project.

For example:

from google.cloud.bigtable import Client

client = Client(admin=True)
(instances_list, failed_locations_list) = client.list_instances()

property project_path()

Project name to be used with Instance Admin API.

NOTE: This property will not change if project does not, but the return value is not cached.

For example:

from google.cloud.bigtable import Client

client = Client(admin=True)
project_path = client.project_path

The project name is of the form

"projects/{project}"

  • Return type

    str

  • Returns

    Return a fully-qualified project string.

property table_admin_client()

Getter for the gRPC stub used for the Table Admin API.

For example:

from google.cloud.bigtable import Client

client = Client(admin=True)
table_admin_client = client.table_admin_client

  • Return type

    bigtable_admin_pb2.BigtableTableAdmin

  • Returns

    A BigtableTableAdmin instance.

  • Raises

    ValueError if the current client is not an admin client or if it has not been start()-ed.

property table_data_client()

Getter for the gRPC stub used for the Table Admin API.

For example:

from google.cloud.bigtable import Client

client = Client(admin=True)
table_data_client = client.table_data_client

  • Return type

    bigtable_v2.BigtableClient

  • Returns

    A BigtableClient object.

google.cloud.bigtable.client.DATA_SCOPE( = 'https://www.googleapis.com/auth/bigtable.data )

Scope for reading and writing table data.

google.cloud.bigtable.client.READ_ONLY_SCOPE( = 'https://www.googleapis.com/auth/bigtable.data.readonly )

Scope for reading table data.