add manipulation GetMetricDeterminationMode (Draegerwerk#95)

// Added manipulation GetMetricDeterminationMode

# Checklist

The following aspects have been respected by the author of this pull
request, confirmed by both pull request assignee **and** reviewer:

* Changelog update (necessity checked and entry added or not added
respectively)
  * [x] Pull Request Assignee
  * [x] Reviewer
* README update (necessity checked and entry added or not added
respectively)
  * [x] Pull Request Assignee
  * [x] Reviewer

CHANGELOG.md

@@ -8,6 +8,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+- manipulation GetMetricDeterminationMode for metrics
 - manipulation PhysicallyDisconnectRemovableSubsystemAfterPhysicalConnectorProvided
 - manipulation SetActiveModeOfOperation for metrics
 - manipulation PhysicallyDisconnectRemovableSubsystemAfterSettingActivationStateOnOrStndBy

src/t2iapi/metric/metric_responses.proto

@@ -10,6 +10,7 @@ syntax = "proto3";
 package t2iapi.metric;
 
 import "t2iapi/basic_responses.proto";
+import "t2iapi/metric/types.proto";
 
 option java_package = "com.draeger.medical.t2iapi.metric";
 option java_outer_classname = "MetricResponses";
@@ -31,4 +32,12 @@ message CalibrateMetricResponse {
 message IsComputerControlledResponse {
     BasicResponse status = 1;  // the status of the rpc indicating whether or not it was successful
     bool answer = 2;  // true if metric is computer-controlled, otherwise false
-}
+}
+
+/*
+Response indicating whether a metric is determined episodically or periodically
+ */
+message GetMetricDeterminationMode {
+    BasicResponse status = 1;  // the status of the rpc indicating whether or not it was successful
+    MetricDeterminationMode answer = 2;  // 0 - Episodically, 1 - Periodically
+}

src/t2iapi/metric/service.proto

@@ -120,4 +120,10 @@ service MetricService {
    */
   rpc SetActiveModeOfOperation (BasicHandleRequest)
       returns (BasicResponse);
+
+  /*
+  Requests if the metric with the given handle is determined episodically or periodically.
+   */
+  rpc GetMetricDeterminationMode (BasicHandleRequest)
+      returns (t2iapi.metric.GetMetricDeterminationMode);
 }

src/t2iapi/metric/types.proto

@@ -69,3 +69,11 @@ enum MetricStatus {
     METRIC_STATUS_DE_INITIALIZED_AND_NOT_PERFORMING_OR_APPLYING = 4;
     METRIC_STATUS_FAILED = 5;
 }
+
+/*
+Represents whether a METRIC is determined episodically or periodically.
+ */
+enum MetricDeterminationMode {
+    METRIC_DETERMINATION_MODE_EPISODICALLY = 0;
+    METRIC_DETERMINATION_MODE_PERIODICALLY = 1;
+}