Azure App Service Datadog Extension Error

[blakesherry]

Azure App Service Datadog Extension version: 3.3.100
Vector version: 0.44.0

I'm trying to send Datadog logs from Azure App Service to Datadog via the Datadog extension. I see this error in my app service.

2025-03-05 21:19:36.902 +00:00 [ERR] Failed to submit logs with status code 400 and message: {"code":400,"message":"Error parsing JSON: Error(\"unknown field `@t`, expected one of `message`, `status`, `timestamp`, `hostname`, `service`, `ddsource`, `ddtags`\", line: 1, column: 6)"}  { MachineName: ".", Process: "[11480 w3wp]", AppDomain: "[1 <redacted>]", AssemblyLoadContext: "\"\" Datadog.Trace.ClrProfiler.Managed.Loader.ManagedProfilerAssemblyLoadContext #2", TracerVersion: "3.11.1.0" }
2025-03-05 21:19:36.908 +00:00 [ERR] An error occurred while sending 12 traces to the intake at https://<redacted>/api/v2/logs  { MachineName: ".", Process: "[11480 w3wp]", AppDomain: "[1 <redacted>]", AssemblyLoadContext: "\"\" Datadog.Trace.ClrProfiler.Managed.Loader.ManagedProfilerAssemblyLoadContext #2", TracerVersion: "3.11.1.0" }

I noticed that all of my Azure App services using this Datadog extension point directly to Datadog instead of Vector have logs like this for example in datadog. Is the issue that the Datadog extension doesn't support sending logs correctly to Vector or a misconfiguration on my part when using Vector instead of Datadog directly?

{
  "@i": "12807b18",
  "@l": "Error",
  "@t": "2025-03-06T19:42:29.6317746Z",
  "Application": "<redacted>",
  "dd_service": "<redacted>",
  "dd_span_id": "<redacted>",
  "host": "<redacted>",
  "MachineName": "<redacted>",
  "RequestId": "<redacted>",
  "RequestPath": "/health",
  "SourceContext": "<redacted>"
}

[blakesherry]

I realize now, this seems to be related more to using Serilog and maybe Vector API not supporting it?