AWS X-Ray Python SDK get_service_graph - json

Question

I am trying to get JSON using get_service_graph() provided by AWS X-Ray Python SDK in AWS Lambda function. reference link
import boto3
from datetime import datetime
def lambda_handler(event, context):
client = boto3.client('xray')
response1 = client.get_service_graph(
StartTime=datetime(2017, 5, 20, 12, 0),
EndTime=datetime(2017, 5, 20, 18, 0)
)
return response1
However, when I passed StartTime and EndTime parameters, stack trace reports datetime type is not JSON serializable. I even tried the following way.
response1 = client.get_service_graph(
StartTime="2017-05-20 00:00:00",
EndTime="2017-05-20 02:00:00"
)
What's weird is, if EndTime is set as "2017-05-20 01:00:00", there is no error generated. Other than that, the same error occurred.
{
"stackTrace": [
[
"/usr/lib64/python2.7/json/__init__.py",
251,
"dumps",
"sort_keys=sort_keys, **kw).encode(obj)"
],
[
"/usr/lib64/python2.7/json/encoder.py",
207,
"encode",
"chunks = self.iterencode(o, _one_shot=True)"
],
[
"/usr/lib64/python2.7/json/encoder.py",
270,
"iterencode",
"return _iterencode(o, 0)"
],
[
"/var/runtime/awslambda/bootstrap.py",
104,
"decimal_serializer",
"raise TypeError(repr(o) + \" is not JSON serializable\")"
]
],
"errorType": "TypeError",
"errorMessage": "datetime.datetime(2017, 5, 20, 1, 53, 13, tzinfo=tzlocal()) is not JSON serializable"
}
I did try only use date, like datetime(2017, 5, 20). However, if I use two consecutive days as StartTime and EndTime, the runtime complains the interval can't be more than 6 hours. If I use same date, it only returns empty JSON. I don't know how to get granularity of get_service_graph().
I think Python SDK for AWS X-Ray might be premature, but I'd still like to seek help from someone who had the same experience. Thanks!

Answer 1

the right way is using datetime(2017, 5, 20) not a string... but can you try using only date... without time? at least the AWS docs shows an example exactly like yours but only yyyy-mm-dd without time