switch_event_serialize_json wrongly formatting numeric fields

[guillebot]

Describe the bug
I'm using https://github.com/voiceip/mod_event_kafka, which takes its input from switch_event_serialize_json.

Currently the numeric fields in json output are being formatted like this:

{
    "Event-Name": "HEARTBEAT",
    "Core-UUID": "58e0f252-0bdf-49b4-ac6a-5f4426f09288",
    "Hostname": "mss",
    "Switchname": "REDACTED",
    "IPv4": "REDACTED",
    "IPv6": "::1",
 ...
    "Uptime-msec": "329520203",
    "Session-Count": "0",
    "Max-Sessions": "1000",
    "Session-Per-Sec": "30",
    "Session-Per-Sec-Last": "0",
    "Session-Per-Sec-Max": "2",
    "Session-Per-Sec-FiveMin": "0",
    "Session-Since-Startup": "19",
    "Session-Peak-Max": "2",
    "Session-Peak-FiveMin": "0",
    "Idle-CPU": "97.866667"
}

As per RFC7159 (https://datatracker.ietf.org/doc/html/rfc7159), numeric fields shouldn't have any delimiters.

This is how this message should look like:

{
    "Event-Name": "HEARTBEAT",
    "Core-UUID": "58e0f252-0bdf-49b4-ac6a-5f4426f09288",
    "Hostname": "mss",
    "Switchname": "REDACTED",
    "IPv4": "REDACTED",
    "IPv6": "::1",
    "Event-Date-Local": "2024-11-26 08:22:53",
    "Event-Date-GMT": "Tue, 26 Nov 2024 13:22:53 GMT",
    "Event-Date-Timestamp": "1732627373411029",
    "Event-Calling-File": "switch_core.c",
    "Event-Calling-Function": "send_heartbeat",
    "Event-Calling-Line-Number": 95,
    "Event-Sequence": 41499,
    "Event-Info": "System Ready",
    "Up-Time": "0 years, 3 days, 19 hours, 32 minutes, 0 seconds, 203 milliseconds, 442 microseconds",
    "Version": "1.10.13-dev+git~20241105T191229Z~ee7c7dea60~64bit",
    "Uptime-msec": 329520203,
    "Session-Count": 0,
    "Max-Sessions": 1000,
    "Session-Per-Sec": 30,
    "Session-Per-Sec-Last": 0,
    "Session-Per-Sec-Max": 2,
    "Session-Per-Sec-FiveMin": 0,
    "Session-Since-Startup": 19,
    "Session-Peak-Max": 2,
    "Session-Peak-FiveMin": 0,
    "Idle-CPU": 97.866667
}

To Reproduce
Enable log to kafka

Expected behavior
Well formated json

thanks a lot