JAVA-2421: Select only primaries and secondaries for nearest read preference

Author: jyemin

driver-core/src/main/com/mongodb/TaggableReadPreference.java

@@ -344,7 +344,7 @@ public String getName() {
         @Override
         @SuppressWarnings("deprecation")
         public List<ServerDescription> chooseForReplicaSet(final ClusterDescription clusterDescription) {
-            List<ServerDescription> selectedServers = selectFreshServers(clusterDescription, clusterDescription.getAny());
+            List<ServerDescription> selectedServers = selectFreshServers(clusterDescription, clusterDescription.getAnyPrimaryOrSecondary());
             if (!getTagSetList().isEmpty()) {
                 ClusterDescription nonStaleClusterDescription = copyClusterDescription(clusterDescription, selectedServers);
                 selectedServers = Collections.emptyList();

driver-core/src/test/resources/server-selection/server_selection/ReplicaSetNoPrimary/read/Nearest.json

@@ -53,8 +53,24 @@
                     "data_center": "nyc"
                 }, 
                 "type": "RSSecondary"
+            },
+            {
+                "address": "d:27017",
+                "avg_rtt_ms": 5,
+                "tags": {
+                    "data_center": "nyc"
+                },
+                "type": "RSArbiter"
+            },
+            {
+                "address": "e:27017",
+                "avg_rtt_ms": 5,
+                "tags": {
+                    "data_center": "nyc"
+                },
+                "type": "RSGhost"
             }
-        ], 
+        ],
         "type": "ReplicaSetNoPrimary"
     }
 }

driver-core/src/test/resources/server-selection/server_selection/ReplicaSetNoPrimary/read/Nearest_no_tag_set.json

@@ -0,0 +1,71 @@
+{
+  "in_latency_window": [
+    {
+      "address": "b:27017",
+      "avg_rtt_ms": 5,
+      "tags": {
+        "data_center": "nyc"
+      },
+      "type": "RSSecondary"
+    }
+  ],
+  "operation": "read",
+  "read_preference": {
+    "mode": "Nearest",
+  },
+  "suitable_servers": [
+    {
+      "address": "b:27017",
+      "avg_rtt_ms": 5,
+      "tags": {
+        "data_center": "nyc"
+      },
+      "type": "RSSecondary"
+    },
+    {
+      "address": "c:27017",
+      "avg_rtt_ms": 100,
+      "tags": {
+        "data_center": "nyc"
+      },
+      "type": "RSSecondary"
+    }
+  ],
+  "topology_description": {
+    "servers": [
+      {
+        "address": "b:27017",
+        "avg_rtt_ms": 5,
+        "tags": {
+          "data_center": "nyc"
+        },
+        "type": "RSSecondary"
+      },
+      {
+        "address": "c:27017",
+        "avg_rtt_ms": 100,
+        "tags": {
+          "data_center": "nyc"
+        },
+        "type": "RSSecondary"
+      },
+      {
+        "address": "d:27017",
+        "avg_rtt_ms": 5,
+        "tags": {
+          "data_center": "nyc"
+        },
+        "type": "RSArbiter"
+      },
+      {
+        "address": "e:27017",
+        "avg_rtt_ms": 5,
+        "tags": {
+          "data_center": "nyc"
+        },
+        "type": "RSGhost"
+      }
+    ],
+    "type": "ReplicaSetNoPrimary"
+  }
+}