GODRIVER-2943 Fix sharded case

mongo/integration/unified/logger.go

@@ -83,8 +83,6 @@ func (log *Logger) Info(level int, msg string, args ...interface{}) {
 		}
 	}
 
-	defer func() { log.lastOrder++ }()
-
 	// Send the log message to the "orderedLogMessage" channel for
 	// validation.
 	log.logQueue <- orderedLogMessage{

testdata/server-discovery-and-monitoring/unified/logging-sharded.json

@@ -187,22 +187,6 @@
                 }
               }
             },
-            {
-              "level": "debug",
-              "component": "topology",
-              "data": {
-                "message": "Topology description changed",
-                "topologyId": {
-                  "$$exists": true
-                },
-                "previousDescription": {
-                  "$$exists": true
-                },
-                "newDescription": {
-                  "$$exists": true
-                }
-              }
-            },
             {
               "level": "debug",
               "component": "topology",

testdata/server-discovery-and-monitoring/unified/logging-sharded.yml

@@ -97,6 +97,13 @@ tests:
               topologyId: { $$exists: true }
               serverHost: { $$type: string }
               serverPort: { $$type: [int, long] }
+          # TODO(GODRIVER-2967): The following log message has been removed from
+          # the JSON analogue because it assumes that 
+          # "TopologyDescriptionChangedEvent" should occur when a topolgoy is 
+          # closed. This behavior is not clearly defined anywhere and some 
+          # drivers support and some don't.
+          #
+          # Need to sync whenever GODRIVER-2967 is unblocked.
           - level: debug
             component: topology
             data:

x/mongo/driver/topology/server.go

@@ -1028,7 +1028,19 @@ func (s *Server) publishServerHeartbeatSucceededEvent(connectionID string,
 	}
 
 	if mustLogServerMessage(s) {
-		descRaw, _ := bson.Marshal(desc)
+		descRaw, _ := bson.Marshal(struct {
+			description.Server `bson:",inline"`
+			Ok                 int32
+		}{
+			Server: desc,
+			Ok: func() int32 {
+				if desc.LastError != nil {
+					return 0
+				}
+
+				return 1
+			}(),
+		})
 
 		logServerMessage(s, logger.TopologyServerHeartbeatSucceeded,
 			logger.KeyAwaited, await,