CloudWatch PutMetricData body compression in botocore 1.34.40+ about moto HOT 2 CLOSED

Just tried playing with the number of metrics sent and it appears that the body is only compressed when it gets above a certain size.

Setting this line {"id": f"UserType{x}", "expiration": datetime.datetime.now().timestamp() } for x in range(0, 30)
to {"id": f"UserType{x}", "expiration": datetime.datetime.now().timestamp() } for x in range(0, 29) send the request in plaintext and works fine. as soon as the gzip compression kicks in then request fails.

from moto.

Hi @roleyfoley, thanks for investigating this - the hint that it had to do with request compression made debugging a lot simpler!

Moto does support compressed requests, but for some reason we still try to decipher the uncompressed request for this operation. I'll open a PR with a fix shortly.

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