Poll a long running operation

To poll an operation, repeatedly call the get_long_running_operation() method until the operation finishes. Use a backoff between each poll request, such as 10 seconds.

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For detailed documentation that includes this code sample, see the following:

Code sample

Python

For more information, see the AI Applications Python API reference documentation.

To authenticate to AI Applications, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 

from time import sleep

from google.cloud import discoveryengine
from google.longrunning import operations_pb2

# TODO(developer): Uncomment these variables before running the sample.
# Example: `projects/{project}/locations/{location}/collections/{default_collection}/dataStores/{search_engine_id}/branches/{0}/operations/{operation_id}`
# operation_name = "YOUR_OPERATION_NAME"


def poll_operation_sample(
    operation_name: str, limit: int = 10
) -> operations_pb2.Operation:
    # Create a client
    client = discoveryengine.DocumentServiceClient()

    # Make GetOperation request
    request = operations_pb2.GetOperationRequest(name=operation_name)

    for _ in range(limit):
        operation = client.get_operation(request=request)
        # Print the Operation Information
        print(operation)

        # Stop polling when Operation is no longer running
        if operation.done:
            break

        # Wait 10 seconds before polling again
        sleep(10)

    return operation

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