Add Snapshot prefix to sensor and electrical component states (#341)

closes #326

Author: tiyash-basu-frequenz

RELEASE_NOTES.md

@@ -31,6 +31,8 @@
 - A new inverter type `INVERTER_TYPE_WIND_TURBINE` has been added to the `InverterType` enum.
 - Renamed `ComponentCategoryMetadataVariant` to `ElectricalComponentCategorySpecificInfo`.
 - Renamed field `ElectricalComponent.category_type` to `ElectricalComponent.category_specific_info` to better reflect its purpose.
+- Renamed `ElectricalComponentState` to `ElectricalComponentStateSnapshot` to better reflect its purpose.
+- Renamed `SensorState` to `SensorStateSnapshot` to better reflect its purpose.
 
 ## Bug Fixes
 

proto/frequenz/api/common/v1/microgrid/electrical_components/electrical_components.proto

@@ -474,7 +474,7 @@ message ElectricalComponentDiagnostic {
 }
 
 // Representation of a component state, warnings, and errors.
-message ElectricalComponentState {
+message ElectricalComponentStateSnapshot {
   // The time at which the state was sampled.
   google.protobuf.Timestamp sampled_at = 1;
 
@@ -561,5 +561,5 @@ message ElectricalComponentData {
   repeated frequenz.api.common.v1.metrics.MetricSample metric_samples = 2;
 
   // List of states of a specific microgrid component.
-  repeated ElectricalComponentState states = 3;
+  repeated ElectricalComponentStateSnapshot states = 3;
 }

proto/frequenz/api/common/v1/microgrid/sensors/sensors.proto

@@ -168,7 +168,7 @@ message SensorDiagnostic {
 }
 
 // Representation of a sensor state and errors.
-message SensorState {
+message SensorStateSnapshot {
   // The time at which the state was sampled.
   google.protobuf.Timestamp sampled_at = 1;
 
@@ -257,6 +257,6 @@ message SensorData {
   repeated SensorMetricSample metric_samples = 2;
 
   // List of states of a specific microgrid sensor.
-  repeated SensorState states = 3;
+  repeated SensorStateSnapshot states = 3;
 }