逾時

Python 的用戶端程式庫不會指定任何預設逾時，gRPC 傳輸層也不會指定任何預設逾時。也就是說，根據預設，Python 的用戶端程式庫會將逾時行為完全委派給伺服器。

這足以應付大部分用途；不過，如有必要指定用戶端逾時，Python 的用戶端程式庫支援串流和一元呼叫的逾時覆寫。

您可以將逾時時間設為 2 小時以上，但 API 仍可能對執行時間極長的要求逾時，並傳回 DEADLINE_EXCEEDED 錯誤。如果這成為問題，您可以分割查詢並平行執行區塊；這樣可避免長時間執行的要求失敗，且只能重新啟動要求才能復原的情況。

串流通話逾時

唯一使用這類呼叫的 Google Ads API 服務方法是 GoogleAdsService.SearchStream。

如要覆寫預設逾時，您需要在呼叫方法時新增額外參數：

def make_server_streaming_call(
    client: GoogleAdsClient, customer_id: str
) -> None:
    """Makes a server streaming call using a custom client timeout.

    Args:
        client: An initialized GoogleAds client.
        customer_id: The str Google Ads customer ID.
    """
    ga_service: GoogleAdsServiceClient = client.get_service("GoogleAdsService")
    campaign_ids: List[str] = []

    try:
        search_request: SearchGoogleAdsStreamRequest = client.get_type(
            "SearchGoogleAdsStreamRequest"
        )
        search_request.customer_id = customer_id
        search_request.query = _QUERY
        stream: Iterator[SearchGoogleAdsStreamResponse] = (
            ga_service.search_stream(
                request=search_request,
                # When making any request, an optional "timeout" parameter can be
                # provided to specify a client-side response deadline in seconds.
                # If not set, then no timeout will be enforced by the client and
                # the channel will remain open until the response is completed or
                # severed, either manually or by the server.
                timeout=_CLIENT_TIMEOUT_SECONDS,
            )
        )

        batch: SearchGoogleAdsStreamResponse
        for batch in stream:
            row: GoogleAdsRow
            for row in batch.results:
                campaign_ids.append(row.campaign.id)

        print("The server streaming call completed before the timeout.")
    except DeadlineExceeded:
        print("The server streaming call did not complete before the timeout.")
        sys.exit(1)
    except GoogleAdsException as ex:
        print(
            f"Request with ID '{ex.request_id}' failed with status "
            f"'{ex.error.code().name}' and includes the following errors:"
        )
        for error in ex.failure.errors:
            print(f"\tError with message '{error.message}'.")
            if error.location:
                for field_path_element in error.location.field_path_elements:
                    print(f"\t\tOn field: {field_path_element.field_name}")
        sys.exit(1)

    print(f"Total # of campaign IDs retrieved: {len(campaign_ids)}")
set_custom_client_timeouts.py
      

一元呼叫逾時

大多數 Google Ads API 服務方法都使用一元呼叫，常見的例子是 GoogleAdsService.Search 和 GoogleAdsService.Mutate。

如要覆寫預設逾時，您需要在呼叫方法時新增額外參數：

def make_unary_call(client: GoogleAdsClient, customer_id: str) -> None:
    """Makes a unary call using a custom client timeout.

    Args:
        client: An initialized GoogleAds client.
        customer_id: The Google Ads customer ID.
    """
    ga_service: GoogleAdsServiceClient = client.get_service("GoogleAdsService")
    campaign_ids: List[str] = []

    try:
        search_request: SearchGoogleAdsRequest = client.get_type(
            "SearchGoogleAdsRequest"
        )
        search_request.customer_id = customer_id
        search_request.query = _QUERY
        results: Iterator[GoogleAdsRow] = ga_service.search(
            request=search_request,
            # When making any request, an optional "retry" parameter can be
            # provided to specify its retry behavior. Complete information about
            # these settings can be found here:
            # https://googleapis.dev/python/google-api-core/latest/retry.html
            retry=Retry(
                # Sets the maximum accumulative timeout of the call; it
                # includes all tries.
                deadline=_CLIENT_TIMEOUT_SECONDS,
                # Sets the timeout that is used for the first try to one tenth
                # of the maximum accumulative timeout of the call.
                # Note: This overrides the default value and can lead to
                # RequestError.RPC_DEADLINE_TOO_SHORT errors when too small. We
                # recommend changing the value only if necessary.
                initial=_CLIENT_TIMEOUT_SECONDS / 10,
                # Sets the maximum timeout that can be used for any given try
                # to one fifth of the maximum accumulative timeout of the call
                # (two times greater than the timeout that is needed for the
                # first try).
                maximum=_CLIENT_TIMEOUT_SECONDS / 5,
            ),
        )

        row: GoogleAdsRow
        for row in results:
            campaign_ids.append(row.campaign.id)

        print("The unary call completed before the timeout.")
    except DeadlineExceeded:
        print("The unary call did not complete before the timeout.")
        sys.exit(1)
    except GoogleAdsException as ex:
        print(
            f"Request with ID '{ex.request_id}' failed with status "
            f"'{ex.error.code().name}' and includes the following errors:"
        )
        for error in ex.failure.errors:
            print(f"\tError with message '{error.message}'.")
            if error.location:
                for field_path_element in error.location.field_path_elements:
                    print(f"\t\tOn field: {field_path_element.field_name}")
        sys.exit(1)

    print(f"Total # of campaign IDs retrieved: {len(campaign_ids)}")
set_custom_client_timeouts.py