From 2c64c756000d48723aa97d7f04174c61c91d3583 Mon Sep 17 00:00:00 2001
From: Matt Broadstone <mbroadst@gmail.com>
Date: Tue, 1 May 2018 09:32:33 -0400
Subject: [PATCH] feat(topology-description): add helper method for server
 ownership

---
 lib/sdam/topology_description.js | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/lib/sdam/topology_description.js b/lib/sdam/topology_description.js
index 1f8ebcd24..8bd7473e0 100644
--- a/lib/sdam/topology_description.js
+++ b/lib/sdam/topology_description.js
@@ -226,6 +226,16 @@ class TopologyDescription {
   hasWritableServer() {
     return this.hasReadableServer(ReadPreference.primary);
   }
+
+  /**
+   * Determines if the topology has a definition for the provided address
+   *
+   * @param {String} address
+   * @return {Boolean} Whether the topology knows about this server
+   */
+  hasServer(address) {
+    return this.servers.has(address);
+  }
 }
 
 function topologyTypeForServerType(serverType) {