Have just added a short circuit for the loop trying to acquire the exclusive lock so that we fail fast if we are stopping to fix AMQ-893

git-svn-id: https://svn.apache.org/repos/asf/incubator/activemq/trunk@434007 13f79535-47bb-0310-9956-ffa450edef68

activemq-core/src/main/java/org/apache/activemq/store/jdbc/DefaultDatabaseLocker.java

@@ -40,6 +40,7 @@ public class DefaultDatabaseLocker implements DatabaseLocker {
     private final Statements statements;
     private long sleepTime = 1000;
     private Connection connection;
+    private boolean stopping;
 
     public DefaultDatabaseLocker(DataSource dataSource, Statements statements) {
         this.dataSource = dataSource;
@@ -47,6 +48,7 @@ public class DefaultDatabaseLocker implements DatabaseLocker {
     }
 
     public void start() throws Exception {
+        stopping = false;
         connection = dataSource.getConnection();
         connection.setAutoCommit(false);
         
@@ -60,6 +62,9 @@ public class DefaultDatabaseLocker implements DatabaseLocker {
                 }
             }
             catch (Exception e) {
+                if (stopping) { 
+                    throw new Exception("Cannot start broker as being asked to shut down. Interupted attempt to acquire lock: " + e, e);
+                }
                 log.error("Failed to acquire lock: " + e, e);
             }
             log.debug("Sleeping for " + sleepTime + " milli(s) before trying again to get the lock...");
@@ -70,6 +75,7 @@ public class DefaultDatabaseLocker implements DatabaseLocker {
     }
 
     public void stop() throws Exception {
+        stopping = true;
         if (connection != null) {
             connection.rollback();
             connection.close();

activemq-core/src/main/java/org/apache/activemq/store/jdbc/JDBCPersistenceAdapter.java

@@ -148,7 +148,6 @@ public class JDBCPersistenceAdapter extends DataSourceSupport implements Persist
     }
 
     public void start() throws Exception {
-        
         getAdapter().setUseExternalMessageReferences(isUseExternalMessageReferences());
 
         TransactionContext transactionContext = getTransactionContext();