From 704f6d8279c314a165199804ee43eaac4b0d482a Mon Sep 17 00:00:00 2001
From: Anshul Gangwar <anshul.gangwar@citrix.com>
Date: Fri, 9 May 2014 14:32:36 +0530
Subject: [PATCH] CLOUDSTACK-6399: When there are no vms running on hyperv
 host, then agent was returning null. In that case cloudstack was not doing
 anything and not updating the state of the vms to stopped. Now the agent
 returns empty list of hostvmstatereport. Management server will then update
 the vm state to stopped (instead of not acting upon the return state).

---
 .../resource/HypervDirectConnectResource.java      | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/plugins/hypervisors/hyperv/src/com/cloud/hypervisor/hyperv/resource/HypervDirectConnectResource.java b/plugins/hypervisors/hyperv/src/com/cloud/hypervisor/hyperv/resource/HypervDirectConnectResource.java
index 7888e43896e..1816bafa680 100644
--- a/plugins/hypervisors/hyperv/src/com/cloud/hypervisor/hyperv/resource/HypervDirectConnectResource.java
+++ b/plugins/hypervisors/hyperv/src/com/cloud/hypervisor/hyperv/resource/HypervDirectConnectResource.java
@@ -90,10 +90,10 @@ import com.cloud.agent.api.SetupGuestNetworkCommand;
 import com.cloud.agent.api.StartCommand;
 import com.cloud.agent.api.StartupCommand;
 import com.cloud.agent.api.StartupRoutingCommand;
-import com.cloud.agent.api.UnPlugNicAnswer;
-import com.cloud.agent.api.UnPlugNicCommand;
 import com.cloud.agent.api.StartupRoutingCommand.VmState;
 import com.cloud.agent.api.StartupStorageCommand;
+import com.cloud.agent.api.UnPlugNicAnswer;
+import com.cloud.agent.api.UnPlugNicCommand;
 import com.cloud.agent.api.UnsupportedAnswer;
 import com.cloud.agent.api.check.CheckSshAnswer;
 import com.cloud.agent.api.check.CheckSshCommand;
@@ -355,8 +355,12 @@ public class HypervDirectConnectResource extends ServerResourceBase implements S
         }
         s_logger.debug("HostVmStateReportCommand received response "
                 + s_gson.toJson(result));
-        if (!result.isEmpty()) {
-            return result;
+        if (result != null) {
+            if (!result.isEmpty()) {
+                return result;
+            } else {
+                return new ArrayList<Map<String, String>>();
+            }
         }
         return null;
     }
@@ -364,7 +368,7 @@ public class HypervDirectConnectResource extends ServerResourceBase implements S
     protected HashMap<String, HostVmStateReportEntry> getHostVmStateReport() {
         final HashMap<String, HostVmStateReportEntry> vmStates = new HashMap<String, HostVmStateReportEntry>();
         ArrayList<Map<String, String>> vmList = requestHostVmStateReport();
-        if (vmList == null || vmList.isEmpty()) {
+        if (vmList == null) {
             return null;
         }