[AMQ-5505]. Add getUptimeMillis to the BrokerView MBean. This closes #56

activemq-broker/src/main/java/org/apache/activemq/broker/BrokerService.java

@@ -489,14 +489,23 @@ public class BrokerService implements Service {
     }
 
     public String getUptime() {
-        // compute and log uptime
-        if (startDate == null) {
+        long delta = getUptimeMillis();
+
+        if (delta == 0) {
             return "not started";
         }
-        long delta = new Date().getTime() - startDate.getTime();
+
         return TimeUtils.printDuration(delta);
     }
 
+    public long getUptimeMillis() {
+        if (startDate == null) {
+            return 0;
+        }
+
+        return new Date().getTime() - startDate.getTime();
+    }
+
     public boolean isStarted() {
         return started.get() && startedLatch.getCount() == 0;
     }

activemq-broker/src/main/java/org/apache/activemq/broker/jmx/BrokerView.java

@@ -84,6 +84,11 @@ public class BrokerView implements BrokerViewMBean {
         return brokerService.getUptime();
     }
 
+    @Override
+    public long getUptimeMillis() {
+        return brokerService.getUptimeMillis();
+    }
+
     @Override
     public int getCurrentConnectionsCount() {
         return brokerService.getCurrentConnections();

activemq-broker/src/main/java/org/apache/activemq/broker/jmx/BrokerViewMBean.java

@@ -53,6 +53,12 @@ public interface BrokerViewMBean extends Service {
     @MBeanInfo("Uptime of the broker.")
     String getUptime();
 
+    /**
+     * @return Uptime of the broker in milliseconds.
+     */
+    @MBeanInfo("Uptime of the broker in milliseconds.")
+    long getUptimeMillis();
+
     /**
      * @return The current number of active connections on this Broker.
      */