輪詢長時間執行的作業

如要輪詢作業，請重複呼叫 get_long_running_operation() 方法，直到作業完成為止。請在每次輪詢要求之間使用輪詢，例如每 10 秒就進行輪詢。

深入探索

如需包含這個程式碼範例的詳細說明文件，請參閱下列文章：

• 管理長時間執行的作業 (LRO)

程式碼範例

Python

詳情請參閱 Document AI Python API 參考文件。

如要向 Document AI 進行驗證，請設定應用程式預設憑證。詳情請參閱「為本機開發環境設定驗證機制」。

from time import sleep

from google.api_core.client_options import ClientOptions
from google.cloud import documentai  # type: ignore
from google.longrunning.operations_pb2 import GetOperationRequest  # type: ignore

# TODO(developer): Uncomment these variables before running the sample.
# location = "YOUR_PROCESSOR_LOCATION"  # Format is "us" or "eu"
# operation_name = "YOUR_OPERATION_NAME"  # Format is "projects/{project_id}/locations/{location}/operations/{operation_id}"


def poll_operation_sample(location: str, operation_name: str) -> None:
    # You must set the `api_endpoint` if you use a location other than "us".
    opts = ClientOptions(api_endpoint=f"{location}-documentai.googleapis.com")
    client = documentai.DocumentProcessorServiceClient(client_options=opts)

    request = GetOperationRequest(name=operation_name)

    while True:
        # Make GetOperation request
        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)

後續步驟

如要搜尋及篩選其他 Google Cloud 產品的程式碼範例，請參閱Google Cloud 瀏覽器範例。