From a813baed49e50c014fa22df81fc6bc8bc9095213 Mon Sep 17 00:00:00 2001
From: Abhinandan Prateek <abhinandan.prateek@shapeblue.com>
Date: Wed, 17 Aug 2016 16:15:15 +0530
Subject: [PATCH] CLOUDSTACK-9460: For long running transactions, if the
 connection is timed out by the mysql server then refresh it

---
 .../db/src/com/cloud/utils/db/TransactionLegacy.java | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/framework/db/src/com/cloud/utils/db/TransactionLegacy.java b/framework/db/src/com/cloud/utils/db/TransactionLegacy.java
index af834ca115e..8f71e87a245 100644
--- a/framework/db/src/com/cloud/utils/db/TransactionLegacy.java
+++ b/framework/db/src/com/cloud/utils/db/TransactionLegacy.java
@@ -168,7 +168,7 @@ public class TransactionLegacy implements Closeable {
                 isNew = true;
             }
         }
-
+        txn.checkConnection();
         txn.takeOver(name, false);
         if (isNew) {
             s_mbean.addTransaction(txn);
@@ -176,6 +176,16 @@ public class TransactionLegacy implements Closeable {
         return txn;
     }
 
+    public void checkConnection() {
+        try {
+            if (_conn != null && !_conn.isValid(3)) {
+                _conn = null;
+            }
+        } catch (SQLException e) {
+            _conn = null;
+        }
+    }
+
     protected StackElement peekInStack(Object obj) {
         final Iterator<StackElement> it = _stack.iterator();
         while (it.hasNext()) {