2

我正在尝试编写一个谷歌云函数来设置上限以禁用超过一定限制的使用。我按照此处的说明进行操作：https ://cloud.google.com/billing/docs/how-to/notify#cap_disable_billing_to_stop_usage 。

这就是我的云功能的样子（我只是从上面链接的 Google Cloud 文档页面复制和粘贴）：

import base64
import json
import os
from googleapiclient import discovery
from oauth2client.client import GoogleCredentials
PROJECT_ID = os.getenv('GCP_PROJECT')
PROJECT_NAME = f'projects/{PROJECT_ID}'
def stop_billing(data, context):
    pubsub_data = base64.b64decode(data['data']).decode('utf-8')
    pubsub_json = json.loads(pubsub_data)
    cost_amount = pubsub_json['costAmount']
    budget_amount = pubsub_json['budgetAmount']
    if cost_amount <= budget_amount:
        print(f'No action necessary. (Current cost: {cost_amount})')
        return

    billing = discovery.build(
        'cloudbilling',
        'v1',
        cache_discovery=False,
        credentials=GoogleCredentials.get_application_default()
    )

    projects = billing.projects()

    if __is_billing_enabled(PROJECT_NAME, projects):
        print(__disable_billing_for_project(PROJECT_NAME, projects))
    else:
        print('Billing already disabled')


def __is_billing_enabled(project_name, projects):
    """
    Determine whether billing is enabled for a project
    @param {string} project_name Name of project to check if billing is enabled
    @return {bool} Whether project has billing enabled or not
    """
    res = projects.getBillingInfo(name=project_name).execute()
    return res['billingEnabled']


def __disable_billing_for_project(project_name, projects):
    """
    Disable billing for a project by removing its billing account
    @param {string} project_name Name of project disable billing on
    @return {string} Text containing response from disabling billing
    """
    body = {'billingAccountName': ''}  # Disable billing
    res = projects.updateBillingInfo(name=project_name, body=body).execute()
    print(f'Billing disabled: {json.dumps(res)}')

还附上 Google Cloud Function UI 上的截图：

在此处输入图像描述

我还附上了一个屏幕截图，以表明我也将相关内容复制并粘贴到了requirements.txt文件中。

在此处输入图像描述

但是当我去测试代码时，它给了我一个错误：

Expand all | Collapse all{
 insertId: "000000-69dce50a-e079-45ed-b949-a241c97fdfe4"  
 labels: {…}  
 logName: "projects/stanford-cs-231n/logs/cloudfunctions.googleapis.com%2Fcloud-functions"  
 receiveTimestamp: "2020-02-06T16:24:26.800908134Z"  
 resource: {…}  
 severity: "ERROR"  
 textPayload: "Traceback (most recent call last):
  File "/env/local/lib/python3.7/site-packages/google/cloud/functions/worker.py", line 383, in run_background_function
    _function_handler.invoke_user_function(event_object)
  File "/env/local/lib/python3.7/site-packages/google/cloud/functions/worker.py", line 217, in invoke_user_function
    return call_user_function(request_or_event)
  File "/env/local/lib/python3.7/site-packages/google/cloud/functions/worker.py", line 214, in call_user_function
    event_context.Context(**request_or_event.context))
  File "/user_code/main.py", line 9, in stop_billing
    pubsub_data = base64.b64decode(data['data']).decode('utf-8')
KeyError: 'data'
"  
 timestamp: "2020-02-06T16:24:25.411Z"  
 trace: "projects/stanford-cs-231n/traces/8e106d5ab629141d5d91b6b68fb30c82"  
}

知道为什么吗？

相关堆栈溢出帖子：https ://stackoverflow.com/a/58673874/3507127

4

1 回答 1

2

Google 提供的代码似乎有错误。当我更改stop_billing功能时，我得到了它：

def stop_billing(data, context):
    if 'data' in data.keys():
        pubsub_data = base64.b64decode(data['data']).decode('utf-8')
        pubsub_json = json.loads(pubsub_data)
        cost_amount = pubsub_json['costAmount']
        budget_amount = pubsub_json['budgetAmount']
    else:
        cost_amount = data['costAmount']
        budget_amount = data['budgetAmount']
    if cost_amount <= budget_amount:
        print(f'No action necessary. (Current cost: {cost_amount})')
        return    
    if PROJECT_ID is None:
        print('No project specified with environment variable')
        return
    billing = discovery.build('cloudbilling', 'v1', cache_discovery=False, )
    projects = billing.projects()
    billing_enabled = __is_billing_enabled(PROJECT_NAME, projects)
    if billing_enabled:
        __disable_billing_for_project(PROJECT_NAME, projects)
    else:
        print('Billing already disabled')

问题在于 pub/sub 消息以 json 消息的形式提供输入，其中包含 base64 编码的“数据”条目。在测试功能中，您提供的 json 条目没有“数据”键，也没有对其进行编码。这在我上面重写的函数中进行了检查。

于 2020-10-11T16:03:17.197 回答