MultiNodeUtil: Verify Fabric connectivity for given RDSW

Summary: As titled.

Reviewed By: jasmeetbagga

Differential Revision:
D75760724

Privacy Context Container: L1125642

fbshipit-source-id: 7e858cd61d93129c9e0a142900dd290ae03245e8

Author: Shrikrishna (Shri) Khare

fboss/lib/multinode/MultiNodeUtil.cpp

@@ -149,6 +149,17 @@ std::set<std::string> MultiNodeUtil::getFabricConnectedSwitches(
   return connectedSwitches;
 }
 
+bool MultiNodeUtil::verifyFabricConnectedSwitchesForRdsw(
+    int clusterId,
+    const std::string& rdswToVerify) {
+  // Every RDSW is connected to all FDSWs in its cluster
+  std::set<std::string> expectedConnectedSwitches(
+      clusterIdToFdsws_[clusterId].begin(), clusterIdToFdsws_[clusterId].end());
+  auto gotConnectedSwitches = getFabricConnectedSwitches(rdswToVerify);
+
+  return expectedConnectedSwitches == gotConnectedSwitches;
+}
+
 std::set<std::string> MultiNodeUtil::getGlobalSystemPortsOfType(
     const std::string& rdsw,
     const std::set<RemoteSystemPortType>& types) {

fboss/lib/multinode/MultiNodeUtil.h

@@ -32,6 +32,9 @@ class MultiNodeUtil {
 
   std::set<std::string> getFabricConnectedSwitches(
       const std::string& switchName);
+  bool verifyFabricConnectedSwitchesForRdsw(
+      int clusterId,
+      const std::string& rdswToVerify);
 
   std::set<std::string> getGlobalSystemPortsOfType(
       const std::string& rdsw,