tree 298fecdb3e3cac516653b6fb8885b90adbb24b99
parent a93e90b2a3e273b741d1c87e9227e75fa9c5d892
author gBMC Team <gbmc-core@google.com> 1789092703 -0700
committer Copybara-Service <copybara-worker@google.com> 1789092790 -0700

Add tlBMC Redfish PATCH override route and dev-signed safety gating for sensors

This change implements software sensor override management via Redfish:
- Supports `PATCH /redfish/v1/Chassis/<ChassisId>/Sensors/<SensorId>` with payload `Oem.Google.SensorValueOverridden: true` and `Reading` to instantiate a software override (enforces that `Reading` must be present).
- Supports `PATCH` with `Oem.Google.SensorValueOverridden: false` to clear an active override (enforces that `Reading` must NOT be present).
- Conditionally decorates `GET` responses with `Oem.Google.SensorValueOverridden: true` only when a software override is active, omitting the field entirely when inactive.
- Implements compile-time safety gating using `constexpr bool enableTlbmcSensorOverride` from `bmcweb_config.h` (configured via Meson option `tlbmc-sensor-override` and Bazel build flag `tlbmc_sensor_override`), with runtime environment variable fallback `ENABLE_TLBMC_SENSOR_OVERRIDE` for test environments. Returns HTTP 403 Forbidden (`Base.1.13.0.ActionNotSupported`) on production builds when disabled.

Google-Bug-Id:550410302
PiperOrigin-RevId: 979525293
Change-Id: I1843082e86e8a0e6ff422f3f7a2c92199fdd7abf