获取protobuf当前时间戳

Question

设法创建一个脚本并运行它以通过 Google API（BigQuery 数据传输服务）安排作业，该脚本使用protobuf 消息时间戳类型来设置开始和结束日期。我无法将其更改为当前时间戳。

检查以下资源：

• https://google-cloud.readthedocs.io/en/latest/bigquery_datatransfer/gapic/v1/api.html#google.cloud.bigquery_datatransfer_v1.DataTransferServiceClient.schedule_transfer_runs

• https://pythonhosted.org/gax-google-logging-v2/google.protobuf.timestamp_pb2.html

我尝试设置如下属性，但这会引发“请求包含无效参数”的错误。

now = time.time()
seconds = int(now)
start_time = Timestamp(seconds=seconds, nanos=0)
end_time = Timestamp(seconds=seconds, nanos=0)

请参阅下面的工作示例：

#!/usr/bin/env python
from google.cloud import bigquery_datatransfer
from google.protobuf.timestamp_pb2 import Timestamp

client = bigquery_datatransfer.DataTransferServiceClient()

start_time = Timestamp()
end_time = Timestamp()

client.schedule_transfer_runs(client.get_transfer_config("projects/{project_id}/locations/europe/transferConfigs/{transfer_id}").name,
                              start_time=start_time,
                              end_time=end_time)

这可行，但会向 API 发送开始时间和结束时间时间戳的请求1970-01-01T00:00:00Z- 我希望能够将其更改为当前时间戳。

Answer 1

Timestamp正如文档中所述，有几种方法可以做到这一点。如果您只想使用当前时间构建时间戳，则可以简单地使用timestamp_message.GetCurrentTime(). 如果您想用您的值填充时间戳，seconds那么您可以简单地使用timestamp_message.FromSeconds(seconds).

作为一个更完整的例子

start_time = Timestamp()
start_time.GetCurrentTime()  # Stores the current time in start_time.
end_time = Timestamp()
seconds = 12345
end_time.FromSeconds(seconds)  # Stores the number of seconds in end_time.

对于您的具体实例，您应该能够执行以下操作

#!/usr/bin/env python
from google.cloud import bigquery_datatransfer
from google.protobuf.timestamp_pb2 import Timestamp

client = bigquery_datatransfer.DataTransferServiceClient()

start_time = Timestamp()
start_time.GetCurrentTime()
end_time = Timestamp()
end_time.GetCurrentTime()

client.schedule_transfer_runs(client.get_transfer_config("projects/{project_id}/locations/europe/transferConfigs/{transfer_id}").name,
                              start_time=start_time,
                              end_time=end_time)