apply fix for: https://issues.apache.org/jira/browse/AMQ-3939

git-svn-id: https://svn.apache.org/repos/asf/activemq/trunk@1365290 13f79535-47bb-0310-9956-ffa450edef68

activemq-core/src/main/java/org/apache/activemq/transport/failover/FailoverTransport.java

@@ -343,6 +343,8 @@ public class FailoverTransport implements CompositeTransport {
 
     public void stop() throws Exception {
         Transport transportToStop = null;
+        List<Transport> backupsToStop = new ArrayList<Transport>(backups.size());
+
         synchronized (reconnectMutex) {
             if (LOG.isDebugEnabled()) {
                 LOG.debug("Stopped " + this);
@@ -353,8 +355,13 @@ public class FailoverTransport implements CompositeTransport {
             started = false;
             disposed = true;
             connected = false;
-            for (BackupTransport t : backups) {
-                t.setDisposed(true);
+            for (BackupTransport backup : backups) {
+                backup.setDisposed(true);
+                Transport transport = backup.getTransport();
+                if (transport != null) {
+                    transport.setTransportListener(disposedListener);
+                    backupsToStop.add(transport);
+                }
             }
             backups.clear();
 
@@ -370,6 +377,12 @@ public class FailoverTransport implements CompositeTransport {
         if (transportToStop != null) {
             transportToStop.stop();
         }
+        for (Transport transport : backupsToStop) {
+            try {
+                disposeTransport(transport);
+            } catch (Exception e) {
+            }
+        }
     }
 
     public long getInitialReconnectDelay() {

activemq-core/src/test/java/org/apache/activemq/transport/failover/FailoverBackupLeakTest.java

@@ -0,0 +1,127 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.activemq.transport.failover;
+
+import static org.junit.Assert.assertTrue;
+
+import javax.jms.Connection;
+import javax.jms.ConnectionFactory;
+import javax.jms.JMSException;
+import javax.jms.Session;
+
+import org.apache.activemq.ActiveMQConnectionFactory;
+import org.apache.activemq.broker.BrokerService;
+import org.apache.activemq.util.Wait;
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+/**
+ * Ensures connections aren't leaked when when we use backup=true and randomize=false
+ */
+public class FailoverBackupLeakTest {
+
+    private static BrokerService s1, s2;
+
+    @BeforeClass
+    public static void setUp() throws Exception {
+        s1 = buildBroker("broker1");
+        s2 = buildBroker("broker2");
+
+        s1.start();
+        s1.waitUntilStarted();
+        s2.start();
+        s2.waitUntilStarted();
+    }
+
+    @AfterClass
+    public static void tearDown() throws Exception {
+        if (s2 != null) {
+            s2.stop();
+            s2.waitUntilStopped();
+        }
+        if (s1 != null) {
+            s1.stop();
+            s1.waitUntilStopped();
+        }
+    }
+
+    private static String getConnectString(BrokerService service) throws Exception {
+        return service.getTransportConnectors().get(0).getPublishableConnectString();
+    }
+
+    private static BrokerService buildBroker(String brokerName) throws Exception {
+        BrokerService service = new BrokerService();
+        service.setBrokerName(brokerName);
+        service.setUseJmx(false);
+        service.setPersistent(false);
+        service.setUseShutdownHook(false);
+        service.addConnector("tcp://0.0.0.0:0?transport.closeAsync=false");
+        return service;
+    }
+
+    @Test
+    public void backupNoRandomize() throws Exception {
+        check("backup=true&randomize=false");
+    }
+
+    @Test
+    public void priorityBackupNoRandomize() throws Exception {
+        check("priorityBackup=true&randomize=false");
+    }
+
+    private void check(String connectionProperties) throws Exception {
+        String s1URL = getConnectString(s1), s2URL = getConnectString(s2);
+        String uri = "failover://(" + s1URL + "," + s2URL + ")?" + connectionProperties;
+        ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory(uri);
+        for (int i = 0; i < 10; i++) {
+            buildConnection(factory);
+        }
+
+        assertTrue(connectionProperties +  " broker1 connection count not zero", Wait.waitFor(new Wait.Condition() {
+
+            @Override
+            public boolean isSatisified() throws Exception {
+                return getConnectionCount(s1) == 0;
+            }
+        }));
+
+        assertTrue(connectionProperties +  " broker2 connection count not zero", Wait.waitFor(new Wait.Condition() {
+
+            @Override
+            public boolean isSatisified() throws Exception {
+                return getConnectionCount(s2) == 0;
+            }
+        }));
+    }
+
+    private int getConnectionCount(BrokerService service) {
+        return service.getTransportConnectors().get(0).getConnections().size();
+    }
+
+    private void buildConnection(ConnectionFactory local) throws JMSException {
+        Connection conn = null;
+        Session sess = null;
+        try {
+            conn = local.createConnection();
+            sess =  conn.createSession(false, Session.CLIENT_ACKNOWLEDGE);
+        } finally {
+            try { if (sess != null) sess.close(); } catch (JMSException ignore) { }
+            try { if (conn != null) conn.close(); } catch (JMSException ignore) { }
+        }
+    }
+}