The V2 telemetry ingest path (TelemetryPayloadParser) skipped the
Newtonsoft-JToken -> native normalization the V1 NDJSON path applied. Nested
values (e.g. hardware_spec.disks/gpus) stayed as JObject/JArray and reached
System.Text.Json downstream in UpsertDeviceSnapshotAsync, serializing to corrupt
nested-empty-array output (e.g. "disks":[[[[]],[[]]]]). Verified on live data.
- Extract shared EventDataNormalizer (Normalize + NormalizeMap); both ingest
paths and the read path (TableStorageService.DeserializeEventData) now use it,
consolidating 3 duplicate copies of the same logic into one.
- TelemetryPayloadParser.ParseEvent now normalizes after deserialize.
- DetectHasSSD: exact Equals("SSD"/"NVMe") -> case-insensitive Contains. The
agent reports composite media types ("NVMe SSD") so the exact compare matched
nothing and hasSSD was false on every row, independent of the corruption.
- New EventDataNormalizationTests cover nested normalization, STJ round-trip
safety, the read-path map, and DetectHasSSD matching.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Oliver Kieselbach