Adding messaging.operation for all operations, not just publish.

Author: stebet

projects/RabbitMQ.Client/client/impl/RabbitMQActivitySource.cs

@@ -37,7 +37,7 @@ internal static Activity Send(BasicPublish basicPublish, int bodySize)
         {
             if (source.HasListeners())
             {
-                Activity activity = StartRabbitMQActivity($"{basicPublish._routingKey} send", ActivityKind.Producer, Activity.Current?.Context ?? default);
+                Activity activity = StartRabbitMQActivity($"{basicPublish._routingKey} publish", ActivityKind.Producer, Activity.Current?.Context ?? default);
                 if (activity != null && activity.IsAllDataRequested)
                 {
                     PopulateMessagingTags("publish", basicPublish._routingKey, basicPublish._exchange, 0, null, bodySize, activity);
@@ -130,7 +130,7 @@ private static void PopulateMessagingTags(string operation, string routingKey, s
         {
 
             activity
-            .SetTag(MessagingOperation, operation == "publish" ? operation : null)
+            .SetTag(MessagingOperation, operation)
             .SetTag(MessagingDestination, string.IsNullOrEmpty(exchange) ? "amq.default" : exchange)
             .SetTag(MessagingDestinationKind, "topic")
             .SetTag(MessagingDestinationRoutingKey, routingKey)

projects/Unit/ActivitySource/TestActivitySource.cs

@@ -84,7 +84,7 @@ void AssertIntTagGreaterThanZero(Activity activity, string name)
 
                 var activityArray = activities.ToArray();
                 Assert.NotEmpty(activityArray);
-                Activity sendActivity = activityArray.Single(x => x.OperationName == $"{queueName} send");
+                Activity sendActivity = activityArray.Single(x => x.OperationName == $"{queueName} publish");
                 Activity receiveActivity = activityArray.Single(x => x.OperationName == $"{queueName} receive");
                 Activity processActivity = activityArray.Single(x => x.OperationName == $"{queueName} process");
                 Assert.Equal(ActivityKind.Producer, sendActivity.Kind);