Add ConfigInfo Telemetry (#420)

* first version

* Update src/Authentication.Abstractions/Authentication.Abstractions.csproj

* refine code

* resolve comments

* revert csproj

* polish

* rename to ConfigMetrics

* revert src/Authentication.Abstractions/Authentication.Abstractions.csproj

* Update src/Authentication.Abstractions/Authentication.Abstractions.csproj

* wip

src/Authentication.Abstractions/Models/ConfigMetrics.cs

@@ -0,0 +1,44 @@
+// ----------------------------------------------------------------------------------
+//
+// Copyright Microsoft Corporation
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// ----------------------------------------------------------------------------------
+
+using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+
+namespace Microsoft.Azure.Commands.Common.Authentication.Abstractions.Models
+{
+    /// <summary>
+    /// Recorded value for config in telemetry
+    /// </summary>
+    public class ConfigMetrics: IExtensibleModel
+    {
+        /// <summary>
+        /// The unique key of config. It's required for recording config telemetry.
+        /// </summary>
+        public string ConfigKey { get; private set; }
+
+        /// <summary>
+        /// Config value in string format. It's required for recording config telemetry.
+        /// </summary>
+        public string ConfigValue { get; private set; }
+
+        public IDictionary<string, string> ExtendedProperties { get; } = new ConcurrentDictionary<string, string>(StringComparer.OrdinalIgnoreCase);
+
+        public ConfigMetrics(string ConfigKey, string ConfigValue)
+        {
+            this.ConfigKey = ConfigKey;
+            this.ConfigValue = ConfigValue;
+        }
+    }
+}

src/Common/MetricHelper.cs

@@ -35,6 +35,7 @@
 using System.Threading.Tasks;
 using System.ComponentModel;
 using Microsoft.WindowsAzure.Commands.Common.Sanitizer;
+using Microsoft.Azure.Commands.Common.Authentication.Abstractions.Models;
 
 namespace Microsoft.WindowsAzure.Commands.Common
 {
@@ -451,6 +452,7 @@ private void PopulatePropertiesFromQos(AzurePSQoSEvent qos, IDictionary<string,
                 }
             }
 
+            PopulateConfigMetricsFromQos(qos, eventProperties);
             PopulateSanitizerPropertiesFromQos(qos, eventProperties);
 
             if (qos.InputFromPipeline != null)
@@ -500,6 +502,17 @@ private void PopulateSanitizerPropertiesFromQos(AzurePSQoSEvent qos, IDictionary
             }
         }
 
+        private void PopulateConfigMetricsFromQos(AzurePSQoSEvent qos, IDictionary<string, string> eventProperties)
+        {
+            if (qos?.ConfigMetrics != null)
+            {
+                foreach (var configMetric in qos.ConfigMetrics)
+                {
+                    eventProperties[configMetric.ConfigKey] = configMetric.ConfigValue;
+                }
+            }
+        }
+
         private static string[] exceptionTrackAcceptModuleList = { "Az.Accounts", "Az.Compute", "Az.AKS", "Az.ContainerRegistry" };
         private static string[] exceptionTrackAcceptCmdletList = { "Get-AzKeyVaultSecret", "Get-AzKeyVaultCert" };
 
@@ -656,7 +669,11 @@ public class AzurePSQoSEvent
 
     public string ParameterSetName { get; set; }
     public string InvocationName { get; set; }
+
+    public List<ConfigMetrics> ConfigMetrics { get; private set; } 
+
     public Dictionary<string, string> CustomProperties { get; private set; }
+
     private static bool ShowTelemetry = string.Equals(bool.TrueString, Environment.GetEnvironmentVariable("AZUREPS_DEBUG_SHOW_TELEMETRY"), StringComparison.OrdinalIgnoreCase);
 
     public SanitizerTelemetry SanitizerInfo { get; set; }
@@ -666,6 +683,7 @@ public AzurePSQoSEvent()
         StartTime = DateTimeOffset.Now;
         _timer = new Stopwatch();
         _timer.Start();
+        ConfigMetrics = new List<ConfigMetrics>();
         CustomProperties = new Dictionary<string, string>();
     }