address few (not all) PR comments

com.unity.perception/Runtime/PerceptionAnalytics.cs

 using Unity.Simulation;
 using UnityEngine.Analytics;
 using UnityEngine;
-using UnityEngine.Assertions;
+using UnityEngine.Perception.Randomization.Scenarios;
 #if UNITY_EDITOR
 using UnityEditor;
 #endif
+
     /// <summary>
     /// Editor and Runtime analytics for the Perception package.
     /// </summary>
     /// </remarks>
     public static class PerceptionAnalytics
     {
-
+        #region Setup
+        [RuntimeInitializeOnLoadMethod]
+        static void OnInitializeOnLoad()
+        {
+            Manager.Instance.ShutdownNotification += OnSimulationShutdown;
+        }
+
+        static void OnSimulationShutdown()
+        {
+            var perceptionCamera = Object.FindObjectOfType<PerceptionCamera>();
+            ReportScenarioInformation(
+                perceptionCamera,
+                ScenarioBase.activeScenario
+            );
+        }
+
+        #endregion
+
         /// <summary>
         /// Stores whether each event has been registered successfully or not.
         /// </summary>
                 if (allEvents.Contains(theEvent))
                     s_EventRegistrationStatus[theEvent] = false;
                 else
-                    Debug.LogError($"Unrecognized event {theEvent} not included in {nameof(allEvents)}.");
+                    throw new NotSupportedException($"Unrecognized event {theEvent} not included in {nameof(allEvents)}.");
             }
 
             // If registered previously, return true
             "KeypointLabeler", "ObjectCountLabeler", "SemanticSegmentationLabeler", "RenderedObjectInfoLabeler"
         };
 
-        internal static void ReportScenarioCompleted(
+        static void ReportScenarioInformation(
-            IEnumerable<Randomizer> randomizers
+            ScenarioBase scenario
+            var randomizers = scenario ? scenario.activeRandomizers : new List<Randomizer>();
             var data = ScenarioCompletedData.FromCameraAndRandomizers(cam, randomizers);
             SendPerceptionAnalyticsEvent(k_EventScenarioInformation, data);
         }

com.unity.perception/Runtime/Randomization/Scenarios/ScenarioBase.cs

 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
+using Unity.Simulation;
 using UnityEditor;
 using UnityEngine;
 using UnityEngine.Perception.Analytics;
                 foreach (var randomizer in activeRandomizers)
                     randomizer.ScenarioComplete();
 
-                TrackScenarioCompleted();
-
                 OnComplete();
                 state = State.Idle;
                 OnIdle();
             /// The scenario has finished and is idle
             /// </summary>
             Idle
-        }
-
-        static void TrackScenarioCompleted()
-        {
-            var perceptionCamera = SceneManager.GetActiveScene()
-                .GetRootGameObjects()
-                .Select(obj => obj.GetComponentInChildren<PerceptionCamera>())
-                .FirstOrDefault(x => x != null);
-
-            PerceptionAnalytics.ReportScenarioCompleted(
-                perceptionCamera,
-                activeScenario.randomizers
-            );
         }
 
         public void RestartIteration()

TestProjects/PerceptionHDRP/Assets/Scenes/AllMembersAndParametersTestRandomizer.cs

-using UnityEngine.Perception.Analytics;
-using UnityEngine.Perception.Randomization.Parameters;
-using UnityEngine.Perception.Randomization.Randomizers;
-using UnityEngine.Perception.Randomization.Samplers;
-
-namespace UnityEngine.Perception
-{
-    [AddRandomizerMenu("Test/All Members And Parameters")]
-    public class AllMembersAndParametersTestRandomizer: Randomizer
-    {
-        // Members
-        public bool booleanMember = false;
-        public int intMember = 4;
-        public uint uintMember = 2;
-        public float floatMember = 5;
-        public Vector2 vector2Member = new Vector2(4, 7);
-        public MemberData unsupportedMember = new MemberData();
-        // Parameters
-        public BooleanParameter booleanParam = new BooleanParameter()
-        {
-            value = new ConstantSampler(1)
-        };
-        public FloatParameter floatParam = new FloatParameter()
-        {
-            value = new AnimationCurveSampler()
-        };
-        public IntegerParameter integerParam = new IntegerParameter()
-        {
-            value = new UniformSampler(-3, 7)
-        };
-        public Vector2Parameter vector2Param = new Vector2Parameter()
-        {
-            x = new ConstantSampler(2),
-            y = new UniformSampler(-4, 8)
-        };
-        public Vector3Parameter vector3Param = new Vector3Parameter()
-        {
-            x = new NormalSampler(-5, 9, 4, 2),
-            y = new ConstantSampler(3),
-            z = new AnimationCurveSampler()
-        };
-        public Vector4Parameter vector4Param = new Vector4Parameter()
-        {
-            x = new NormalSampler(-5, 9, 4, 2),
-            y = new ConstantSampler(3),
-            z = new AnimationCurveSampler(),
-            w = new UniformSampler(-12, 42)
-        };
-        public ColorRgbCategoricalParameter colorRgbCategoricalParam = new ColorRgbCategoricalParameter();
-    };
-}

TestProjects/PerceptionHDRP/Assets/Scenes/AllMembersAndParametersTestRandomizer.cs.meta

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TestProjects/PerceptionHDRP/Assets/Scenes.meta

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TestProjects/PerceptionHDRP/randomizerAnalyticsSerializationExample.json

-{"name":"AllMembersAndParametersTestRandomizer","members":[{"name":"booleanMember","value":"False","type":"System.Boolean"},{"name":"intMember","value":"4","type":"System.Int32"},{"name":"uintMember","value":"2","type":"System.UInt32"},{"name":"floatMember","value":"5","type":"System.Single"},{"name":"vector2Member","value":"(4.0, 7.0)","type":"UnityEngine.Vector2"},{"name":"unsupportedMember","value":"UnityEngine.Perception.PerceptionEngineAnalytics+MemberData","type":"UnityEngine.Perception.PerceptionEngineAnalytics+MemberData"}],"parameters":[{"name":"booleanParam","type":"BooleanParameter","fields":[{"name":"value","distribution":"Constant","value":1.0,"rangeMinimum":-2.14748365E+09,"rangeMaximum":-2.14748365E+09,"mean":-2.14748365E+09,"stdDev":-2.14748365E+09,"categoricalParameterCount":-2147483648}]},{"name":"floatParam","type":"FloatParameter","fields":[{"name":"value","distribution":"AnimationCurve","value":-2.14748365E+09,"rangeMinimum":-2.14748365E+09,"rangeMaximum":-2.14748365E+09,"mean":-2.14748365E+09,"stdDev":-2.14748365E+09,"categoricalParameterCount":-2147483648}]},{"name":"integerParam","type":"IntegerParameter","fields":[{"name":"value","distribution":"Uniform","value":-2.14748365E+09,"rangeMinimum":-3.0,"rangeMaximum":7.0,"mean":-2.14748365E+09,"stdDev":-2.14748365E+09,"categoricalParameterCount":-2147483648}]},{"name":"vector2Param","type":"Vector2Parameter","fields":[{"name":"x","distribution":"Constant","value":2.0,"rangeMinimum":-2.14748365E+09,"rangeMaximum":-2.14748365E+09,"mean":-2.14748365E+09,"stdDev":-2.14748365E+09,"categoricalParameterCount":-2147483648},{"name":"y","distribution":"Uniform","value":-2.14748365E+09,"rangeMinimum":-4.0,"rangeMaximum":8.0,"mean":-2.14748365E+09,"stdDev":-2.14748365E+09,"categoricalParameterCount":-2147483648}]},{"name":"vector3Param","type":"Vector3Parameter","fields":[{"name":"x","distribution":"Normal","value":-2.14748365E+09,"rangeMinimum":-5.0,"rangeMaximum":9.0,"mean":4.0,"stdDev":2.0,"categoricalParameterCount":-2147483648},{"name":"y","distribution":"Constant","value":3.0,"rangeMinimum":-2.14748365E+09,"rangeMaximum":-2.14748365E+09,"mean":-2.14748365E+09,"stdDev":-2.14748365E+09,"categoricalParameterCount":-2147483648},{"name":"z","distribution":"AnimationCurve","value":-2.14748365E+09,"rangeMinimum":-2.14748365E+09,"rangeMaximum":-2.14748365E+09,"mean":-2.14748365E+09,"stdDev":-2.14748365E+09,"categoricalParameterCount":-2147483648}]},{"name":"vector4Param","type":"Vector4Parameter","fields":[{"name":"x","distribution":"Normal","value":-2.14748365E+09,"rangeMinimum":-5.0,"rangeMaximum":9.0,"mean":4.0,"stdDev":2.0,"categoricalParameterCount":-2147483648},{"name":"y","distribution":"Constant","value":3.0,"rangeMinimum":-2.14748365E+09,"rangeMaximum":-2.14748365E+09,"mean":-2.14748365E+09,"stdDev":-2.14748365E+09,"categoricalParameterCount":-2147483648},{"name":"z","distribution":"AnimationCurve","value":-2.14748365E+09,"rangeMinimum":-2.14748365E+09,"rangeMaximum":-2.14748365E+09,"mean":-2.14748365E+09,"stdDev":-2.14748365E+09,"categoricalParameterCount":-2147483648},{"name":"w","distribution":"Uniform","value":-2.14748365E+09,"rangeMinimum":-12.0,"rangeMaximum":42.0,"mean":-2.14748365E+09,"stdDev":-2.14748365E+09,"categoricalParameterCount":-2147483648}]},{"name":"colorRgbCategoricalParam","type":"ColorRgbCategoricalParameter","fields":[{"name":"values","distribution":"Categorical","value":-2.14748365E+09,"rangeMinimum":-2.14748365E+09,"rangeMaximum":-2.14748365E+09,"mean":-2.14748365E+09,"stdDev":-2.14748365E+09,"categoricalParameterCount":3}]}]}