fix: do not alter telemetry ctx pt.2

src/Arcus.Observability.Telemetry.AspNetCore/Extensions/ILoggerHttpDependencyExtensions.cs

@@ -127,8 +127,6 @@ public static void LogHttpDependency(
             Guard.NotNull(request, nameof(request), "Requires a HTTP request message to track a HTTP dependency");
             Guard.NotLessThan(duration, TimeSpan.Zero, nameof(duration), "Requires a positive time duration of the HTTP dependency operation");
 
-            context = context ?? new Dictionary<string, object>();
-
             LogHttpDependency(logger, request, statusCode, startTime, duration, dependencyId: null, context);
         }
 
@@ -193,7 +191,7 @@ public static void LogHttpDependency(
             Guard.NotLessThan(statusCode, 100, nameof(statusCode), "Requires a valid HTTP response status code that's within the range of 100 to 599, inclusive");
             Guard.NotGreaterThan(statusCode, 599, nameof(statusCode), "Requires a valid HTTP response status code that's within the range of 100 to 599, inclusive");
 
-            context = context ?? new Dictionary<string, object>();
+            context = context is null ? new Dictionary<string, object>() : new Dictionary<string, object>(context);
 
             string requestUri = request.Path;
             string targetName = request.Host.Host;

src/Arcus.Observability.Telemetry.AspNetCore/Extensions/ILoggerRequestExtensions.cs

@@ -67,8 +67,6 @@ public static void LogRequest(
             Guard.NotNull(response, nameof(response), "Requires a HTTP response instance to track a HTTP request operation");
             Guard.NotNull(measurement, nameof(measurement), "Requires an measurement instance to time the duration of the HTTP request");
 
-            context = context ?? new Dictionary<string, object>();
-
             LogRequest(logger, request, response, measurement.StartTime, measurement.Elapsed, context);
         }
 
@@ -99,8 +97,6 @@ public static void LogRequest(
             Guard.NotNull(response, nameof(response), "Requires a HTTP response instance to track a HTTP request operation");
             Guard.NotLessThan(duration, TimeSpan.Zero, nameof(duration), "Requires a positive time duration of the HTTP request");
 
-            context = context ?? new Dictionary<string, object>();
-
             LogRequest(logger, request, response.StatusCode, operationName: null, startTime, duration, context);
         }
 
@@ -160,8 +156,6 @@ public static void LogRequest(
             Guard.NotNull(response, nameof(response), "Requires a HTTP response instance to track a HTTP request operation");
             Guard.NotNull(measurement, nameof(measurement), "Requires an measurement instance to time the duration of the HTTP request");
 
-            context = context ?? new Dictionary<string, object>();
-
             LogRequest(logger, request, response, operationName, measurement.StartTime, measurement.Elapsed, context);
         }
 
@@ -191,8 +185,6 @@ public static void LogRequest(
             Guard.NotNull(response, nameof(response), "Requires a HTTP response instance to track a HTTP request operation");
             Guard.NotLessThan(duration, TimeSpan.Zero, nameof(duration), "Requires a positive time duration of the HTTP request");
 
-            context = context ?? new Dictionary<string, object>();
-
             LogRequest(logger, request, response.StatusCode, operationName, startTime, duration, context);
         }
 
@@ -254,8 +246,6 @@ public static void LogRequest(
             Guard.NotLessThan(responseStatusCode, 0, nameof(responseStatusCode), "Requires a HTTP response status code that's within the 0-999 range to track a HTTP request");
             Guard.NotGreaterThan(responseStatusCode, 999, nameof(responseStatusCode), "Requires a HTTP response status code that's within the 0-999 range to track a HTTP request");
 
-            context = context ?? new Dictionary<string, object>();
-
             LogRequest(logger, request, responseStatusCode, measurement.StartTime, measurement.Elapsed, context);
         }
 
@@ -287,8 +277,6 @@ public static void LogRequest(
             Guard.NotGreaterThan(responseStatusCode, 999, nameof(responseStatusCode), "Requires a HTTP response status code that's within the 0-999 range to track a HTTP request");
             Guard.NotLessThan(duration, TimeSpan.Zero, nameof(duration), "Requires a positive time duration of the HTTP request");
 
-            context = context ?? new Dictionary<string, object>();
-
             LogRequest(logger, request, responseStatusCode, operationName: null, startTime, duration, context);
         }
 
@@ -353,8 +341,6 @@ public static void LogRequest(
             Guard.NotLessThan(responseStatusCode, 0, nameof(responseStatusCode), "Requires a HTTP response status code that's within the 0-999 range to track a HTTP request");
             Guard.NotGreaterThan(responseStatusCode, 999, nameof(responseStatusCode), "Requires a HTTP response status code that's within the 0-999 range to track a HTTP request");
 
-            context = context ?? new Dictionary<string, object>();
-
             LogRequest(logger, request, responseStatusCode, operationName, measurement.StartTime, measurement.Elapsed, context);
         }
 
@@ -388,7 +374,7 @@ public static void LogRequest(
             Guard.NotGreaterThan(responseStatusCode, 999, nameof(responseStatusCode), "Requires a HTTP response status code that's within the 0-999 range to track a HTTP request");
             Guard.NotLessThan(duration, TimeSpan.Zero, nameof(duration), "Requires a positive time duration of the HTTP request");
 
-            context = context ?? new Dictionary<string, object>();
+            context = context is null ? new Dictionary<string, object>() : new Dictionary<string, object>(context);
 
             logger.LogWarning(MessageFormats.RequestFormat, 
                 RequestLogEntry.CreateForHttpRequest(

src/Arcus.Observability.Telemetry.Core/Extensions/ILoggerAzureSearchDependencyExtensions.cs

@@ -67,8 +67,6 @@ public static void LogAzureSearchDependency(
             Guard.NotNullOrWhitespace(operationName, nameof(operationName), "Requires a non-blank name for the Azure Search service to track the Azure Service dependency");
             Guard.NotNull(measurement, nameof(measurement), "Requires a dependency measurement instance to track the latency of the Azure Search resource when tracking the Azure Search dependency");
 
-            context = context ?? new Dictionary<string, object>();
-
             LogAzureSearchDependency(logger, searchServiceName, operationName, isSuccessful, measurement.StartTime, measurement.Elapsed, context);
         }
 
@@ -98,8 +96,6 @@ public static void LogAzureSearchDependency(
             Guard.NotNullOrWhitespace(operationName, nameof(operationName), "Requires a non-blank name for the Azure Search service to track the Azure Service dependency");
             Guard.NotNull(measurement, nameof(measurement), "Requires a dependency measurement instance to track the latency of the Azure Search resource when tracking the Azure Search dependency");
 
-            context = context ?? new Dictionary<string, object>();
-
             LogAzureSearchDependency(logger, searchServiceName, operationName, isSuccessful, measurement.StartTime, measurement.Elapsed, dependencyId, context);
         }
 
@@ -129,8 +125,6 @@ public static void LogAzureSearchDependency(
             Guard.NotNullOrWhitespace(operationName, nameof(operationName), "Requires a non-blank name for the Azure Search service to track the Azure Service dependency");
             Guard.NotLessThan(duration, TimeSpan.Zero, nameof(duration), "Requires a positive time duration of the Azure Search operation");
 
-            context = context ?? new Dictionary<string, object>();
-
             LogAzureSearchDependency(logger, searchServiceName, operationName, isSuccessful, startTime, duration, dependencyId: null, context);
         }
 
@@ -162,7 +156,7 @@ public static void LogAzureSearchDependency(
             Guard.NotNullOrWhitespace(operationName, nameof(operationName), "Requires a non-blank name for the Azure Search service to track the Azure Service dependency");
             Guard.NotLessThan(duration, TimeSpan.Zero, nameof(duration), "Requires a positive time duration of the Azure Search operation");
 
-            context = context ?? new Dictionary<string, object>();
+            context = context is null ? new Dictionary<string, object>() : new Dictionary<string, object>(context);
 
             logger.LogWarning(MessageFormats.DependencyFormat, new DependencyLogEntry(
                 dependencyType: "Azure Search",

src/Arcus.Observability.Telemetry.Core/Extensions/ILoggerCosmosSqlDependencyExtensions.cs

@@ -136,8 +136,6 @@ public static void LogCosmosSqlDependency(
             Guard.NotNullOrWhitespace(container, nameof(container), "Requires a non-blank container name of the Cosmos SQL storage to track a Cosmos SQL dependency");
             Guard.NotLessThan(duration, TimeSpan.Zero, nameof(duration), "Requires a positive time duration of the Cosmos SQL operation");
 
-            context = context ?? new Dictionary<string, object>();
-
             LogCosmosSqlDependency(logger, accountName, database, container, isSuccessful, startTime, duration, dependencyId: null, context);
         }
 
@@ -173,7 +171,7 @@ public static void LogCosmosSqlDependency(
             Guard.NotNullOrWhitespace(container, nameof(container), "Requires a non-blank container name of the Cosmos SQL storage to track a Cosmos SQL dependency");
             Guard.NotLessThan(duration, TimeSpan.Zero, nameof(duration), "Requires a positive time duration of the Cosmos SQL operation");
 
-            context = context ?? new Dictionary<string, object>();
+            context = context is null ? new Dictionary<string, object>() : new Dictionary<string, object>(context);
             string data = $"{database}/{container}";
 
             logger.LogWarning(MessageFormats.DependencyFormat, new DependencyLogEntry(

src/Arcus.Observability.Telemetry.Core/Extensions/ILoggerCustomDependencyExtensions.cs

@@ -636,8 +636,6 @@ public static void LogDependency(
             Guard.NotNull(dependencyData, nameof(dependencyData), "Requires custom dependency data when tracking the custom dependency");
             Guard.NotLessThan(duration, TimeSpan.Zero, nameof(duration), "Requires a positive time duration of the dependency operation");
 
-            context = context ?? new Dictionary<string, object>();
-
             LogDependency(logger, dependencyType, dependencyData, targetName, isSuccessful, dependencyName, startTime, duration, dependencyId: null, context);
         }
 
@@ -676,7 +674,7 @@ public static void LogDependency(
             Guard.NotNull(dependencyData, nameof(dependencyData), "Requires custom dependency data when tracking the custom dependency");
             Guard.NotLessThan(duration, TimeSpan.Zero, nameof(duration), "Requires a positive time duration of the dependency operation");
 
-            context = context ?? new Dictionary<string, object>();
+            context = context is null ? new Dictionary<string, object>() : new Dictionary<string, object>(context);
 
             logger.LogWarning(MessageFormats.DependencyFormat, new DependencyLogEntry(
                 dependencyType,

src/Arcus.Observability.Telemetry.Core/Extensions/ILoggerEventExtensions.cs

@@ -45,7 +45,7 @@ public static void LogCustomEvent(this ILogger logger, string name, Dictionary<s
             Guard.NotNull(logger, nameof(logger), "Requires a logger instance to track telemetry");
             Guard.NotNullOrWhitespace(name, nameof(name), "Requires a non-blank event name to track an custom event");
 
-            context = context ?? new Dictionary<string, object>();
+            context = context is null ? new Dictionary<string, object>() : new Dictionary<string, object>(context);
 
             logger.LogWarning(MessageFormats.EventFormat, new EventLogEntry(name, context));
         }

src/Arcus.Observability.Telemetry.Core/Extensions/ILoggerEventHubsDependencyExtensions.cs

@@ -124,8 +124,6 @@ public static void LogEventHubsDependency(
             Guard.NotNullOrWhitespace(eventHubName, nameof(eventHubName), "Requires a non-blank Azure Event Hub name to track an Azure Event Hub dependency");
             Guard.NotLessThan(duration, TimeSpan.Zero, nameof(duration), "Requires a positive time duration of the Azure Events Hubs operation");
 
-            context = context ?? new Dictionary<string, object>();
-
             LogEventHubsDependency(logger, namespaceName, eventHubName, isSuccessful, startTime, duration, dependencyId: null, context);
         }
 
@@ -158,7 +156,7 @@ public static void LogEventHubsDependency(
             Guard.NotNullOrWhitespace(eventHubName, nameof(eventHubName), "Requires a non-blank Azure Event Hub name to track an Azure Event Hub dependency");
             Guard.NotLessThan(duration, TimeSpan.Zero, nameof(duration), "Requires a positive time duration of the Azure Events Hubs operation");
 
-            context = context ?? new Dictionary<string, object>();
+            context = context is null ? new Dictionary<string, object>() : new Dictionary<string, object>(context);
 
             logger.LogWarning(MessageFormats.DependencyFormat, new DependencyLogEntry(
                 dependencyType: "Azure Event Hubs",

src/Arcus.Observability.Telemetry.Core/Extensions/ILoggerEventHubsRequestExtensions.cs

@@ -143,7 +143,7 @@ public static void LogEventHubsRequest(
                 operationName = ContextProperties.RequestTracking.EventHubs.DefaultOperationName;
             }
 
-            context = context ?? new Dictionary<string, object>();
+            context = context is null ? new Dictionary<string, object>() : new Dictionary<string, object>(context);
             context[ContextProperties.RequestTracking.EventHubs.Namespace] = eventHubsNamespace;
             context[ContextProperties.RequestTracking.EventHubs.ConsumerGroup] = consumerGroup;
             context[ContextProperties.RequestTracking.EventHubs.Name] = eventHubsName;

src/Arcus.Observability.Telemetry.Core/Extensions/ILoggerGeneralRequestExtensions.cs

@@ -121,7 +121,7 @@ public static void LogCustomRequest(
                 operationName = ContextProperties.RequestTracking.DefaultOperationName;
             }
 
-            context = context ?? new Dictionary<string, object>();
+            context = context is null ? new Dictionary<string, object>() : new Dictionary<string, object>(context);
 
             logger.LogWarning(MessageFormats.RequestFormat, RequestLogEntry.CreateForCustomRequest(requestSource, operationName, isSuccessful, duration, startTime, context));
         }

src/Arcus.Observability.Telemetry.Core/Extensions/ILoggerServiceBusDependencyExtensions.cs

@@ -448,7 +448,7 @@ public static void LogServiceBusDependency(
             Guard.NotNullOrWhitespace(entityName, nameof(entityName), "Requires a non-blank Azure Service Bus entity name to track an Azure Service Bus dependency");
             Guard.NotLessThan(duration, TimeSpan.Zero, nameof(duration), "Requires a positive time duration of the Azure Service Bus operation");
 
-            context = context ?? new Dictionary<string, object>();
+            context = context is null ? new Dictionary<string, object>() : new Dictionary<string, object>(context);
             context[ContextProperties.DependencyTracking.ServiceBus.EntityType] = entityType;
             context[ContextProperties.DependencyTracking.ServiceBus.Endpoint] = serviceBusNamespaceEndpoint;
 

src/Arcus.Observability.Telemetry.Core/Extensions/ILoggerServiceBusRequestExtensions.cs

@@ -121,7 +121,7 @@ public static void LogServiceBusTopicRequestWithSuffix(
             Guard.NotNullOrWhitespace(subscriptionName, nameof(subscriptionName), "Requires an Azure Service Bus subscription name on the to track the topic request");
             Guard.NotLessThan(duration, TimeSpan.Zero, nameof(duration), "Requires a positive time duration of the Azure Service Bus topic request operation");
 
-            context = context ?? new Dictionary<string, object>();
+            context = context is null ? new Dictionary<string, object>() : new Dictionary<string, object>(context);
             context[ContextProperties.RequestTracking.ServiceBus.Topic.SubscriptionName] = subscriptionName;
 
             LogServiceBusRequestWithSuffix(logger, serviceBusNamespace, serviceBusNamespaceSuffix, topicName, operationName, isSuccessful, duration, startTime, ServiceBusEntityType.Topic, context);
@@ -159,7 +159,7 @@ public static void LogServiceBusTopicRequest(
             Guard.NotNullOrWhitespace(subscriptionName, nameof(subscriptionName), "Requires an Azure Service Bus subscription name on the to track the topic request");
             Guard.NotLessThan(duration, TimeSpan.Zero, nameof(duration), "Requires a positive time duration of the Azure Service Bus topic request operation");
 
-            context = context ?? new Dictionary<string, object>();
+            context = context is null ? new Dictionary<string, object>() : new Dictionary<string, object>(context);
             context[ContextProperties.RequestTracking.ServiceBus.Topic.SubscriptionName] = subscriptionName;
 
             LogServiceBusRequest(logger, serviceBusNamespace, topicName, operationName, isSuccessful, duration, startTime, ServiceBusEntityType.Topic, context);
@@ -431,7 +431,7 @@ public static void LogServiceBusRequest(
                 operationName = ContextProperties.RequestTracking.ServiceBus.DefaultOperationName;
             }
 
-            context = context ?? new Dictionary<string, object>();
+            context = context is null ? new Dictionary<string, object>() : new Dictionary<string, object>(context);
             context[ContextProperties.RequestTracking.ServiceBus.Endpoint] = serviceBusNamespace;
             context[ContextProperties.RequestTracking.ServiceBus.EntityName] = entityName;
             context[ContextProperties.RequestTracking.ServiceBus.EntityType] = entityType;

src/Arcus.Observability.Tests.Unit/Telemetry/Logging/AzureSearchDependencyLoggingTests.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using Arcus.Observability.Telemetry.Core;
 using Arcus.Observability.Telemetry.Core.Logging;
 using Bogus;
@@ -307,5 +308,25 @@ public void LogAzureSearchDependencyWithDependencyIdWithDurationMeasurement_With
             Assert.ThrowsAny<ArgumentException>(
                 () => logger.LogAzureSearchDependency(searchServiceName, operationName, isSuccessful, measurement: (DurationMeasurement)null, dependencyId));
         }
+
+        [Fact]
+        public void LogAzureSearchDependency_WithContext_DoesNotAlterContext()
+        {
+            // Arrange
+            var logger = new TestLogger();
+            string searchServiceName = _bogusGenerator.Commerce.ProductName();
+            string operationName = _bogusGenerator.Commerce.ProductName();
+            bool isSuccessful = _bogusGenerator.PickRandom(true, false);
+            string dependencyId = _bogusGenerator.Lorem.Word();
+            var startTime = _bogusGenerator.Date.RecentOffset();
+            var duration = _bogusGenerator.Date.Timespan();
+            var context = new Dictionary<string, object>();
+
+            // Act
+            logger.LogAzureSearchDependency(searchServiceName, operationName, isSuccessful, startTime, duration, dependencyId, context);
+
+            // Assert
+            Assert.Empty(context);
+        }
     }
 }

src/Arcus.Observability.Tests.Unit/Telemetry/Logging/AzureServiceBusDependencyLoggingTests.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using Arcus.Observability.Telemetry.Core;
 using Arcus.Observability.Telemetry.Core.Logging;
 using Bogus;
@@ -801,5 +802,26 @@ public void LogServiceBusTopicDependencyWithDependencyIdWithDurationMeasurement_
             Assert.ThrowsAny<ArgumentException>(
                 () => logger.LogServiceBusTopicDependency(namespaceEndpoint, topicName, isSuccessful, measurement: null, dependencyId));
         }
+
+        [Fact]
+        public void LogServiceBusDependency_WithContext_DoesNotAlterContext()
+        {
+            // Arrange
+            var logger = new TestLogger();
+            string namespaceEndpoint = BogusGenerator.Commerce.Product();
+            string topicName = BogusGenerator.Commerce.Product();
+            bool isSuccessful = BogusGenerator.PickRandom(true, false);
+            string dependencyId = BogusGenerator.Lorem.Word();
+            var startTime = BogusGenerator.Date.RecentOffset();
+            var duration = BogusGenerator.Date.Timespan();
+            var entityType = BogusGenerator.PickRandom<ServiceBusEntityType>();
+            var context = new Dictionary<string, object>();
+
+            // Act
+            logger.LogServiceBusDependency(namespaceEndpoint, topicName, isSuccessful, startTime, duration, dependencyId, entityType, context);
+
+            // Assert
+            Assert.Empty(context);
+        }
     }
 }