向 Microsoft Teams 发送 Cloudwatch 警报通知

Question

我正在尝试创建一个自定义 lambda 函数来过滤来自 Cloudwatch 警报的消息并将其传递给 Microsoft Teams。我在 Teams 中创建了一个 Webhook，还创建了 sns 通知并订阅了 lamnda 功能。 我正在使用 Python 创建该自定义函数。下面是我正在使用的代码，但仍然没有运气！

import urllib3
import json
http = urllib3.PoolManager()
def lambda_handler(event, context):
url = "<webhook url>"
msg_obj = json.loads(event['Records'][0]['Sns']['Message'])

msg_str = """
AlarmName: {alarm_name}
""".format(
alarm_name = msg_obj['AlarmName']
)
msg = {
"text": msg_str
}
encoded_msg = json.dumps(msg).encode('utf-8')
resp = http.request('POST',url, body=encoded_msg)
print({
    "message": msg_obj,
    "status_code": resp.status,
    "response": resp.data
})

当我从 SNS 推送测试消息时，出现以下错误

[ERROR] JSONDecodeError: Expecting value: line 1 column 1 (char 0)
Traceback (most recent call last):
File "/var/task/lambda_function.py", line 7, in lambda_handler
msg_obj = json.loads(event['Records'][0]['Sns']['Message'])
File "/var/lang/lib/python3.9/json/__init__.py", line 346, in loads
return _default_decoder.decode(s)
File "/var/lang/lib/python3.9/json/decoder.py", line 337, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "/var/lang/lib/python3.9/json/decoder.py", line 355, in raw_decode
raise JSONDecodeError("Expecting value", s, err.value) from None

** 另请注意，我还不是 Python 大师！任何帮助将不胜感激。

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