Telemetry upload bug if telemetry list is not ordered by timestamp or if elements of list have different number of key/value pairs

[AndreSensaway]

I'm using tb-mqtt-client version 1.10.10

I have a use-case where I'm uploading a list of telemetry readings. Depending on the order of the list, sometimes not all telemetry is being uploaded and sometimes the timestamp with which it is being uploaded is incorrect...

I first though that the list needed to be sorted by the timestamp attribute but then I had cases where even if it was sorted by timestamp it would work fine. It seems to be a combination of the list not being sorted with each element of the list not having the same number of key/value pairs.

I can't figure out or understand this behavior so any help would be appreciated.

This is the code snippet I'm using for testing this problem:

from tb_device_mqtt import TBPublishInfo
from tb_gateway_mqtt import TBGatewayMqttClient

telemetry =[...]

client = TBGatewayMqttClient("my.url.com", port=1883, username="token")
client.connect()

result = client.gw_send_telemetry('test device', telemetry) 

success = result.get() == TBPublishInfo.TB_ERR_SUCCESS
client.disconnect()

print(success)

Following are some examples of the problem where the only thing I'm changing is the order of the telemetry list:

Example 1 - works fine

telemetry =[
    {
        'ts': 1736330010000,
        'values': {
            'test_1': 1,
            'test_1_1': 1,
        }
    },
    {
        'ts': 1736330030000,
        'values': {
            'test_3': 3,
            'test_3_1': 3,
        }
    },
    {
        'ts': 1736330020000,
        'values': {
            'test_2': 2,
            'test_2_1': 2
        }
    },
]

Example 2 - does not upload test_2 and test_2_1 telemetry

telemetry =[
    {
        'ts': 1736330010000,
        'values': {
            'test_1': 1,
            'test_1_1': 1
        }
    },
    {
        'ts': 1736330020000,
        'values': {
            'test_2': 2,
            'test_2_1': 2
        }
    },
    {
        'ts': 1736330030000,
        'values': {
            'test_3': 3
        }
    },
]

Example 3 - test_1 and test_1_1 are being uploaded with the wrong timestamp. They are being uploaded with the same timestamp as test_3

telemetry =[
    {
        'ts': 1736330010000,
        'values': {
            'test_1': 1,
            'test_1_1': 1,
        }
    },
    {
        'ts': 1736330030000,
        'values': {
            'test_3': 3,
        }
    },
    {
        'ts': 1736330020000,
        'values': {
            'test_2': 2,
            'test_2_1': 2
        }
    },
]