Examples of org.apache.qpid.qmf2.common.QmfEvent

org.apache.qpid.qmf2.common.QmfEvent
QMF supports event management functionality. An event is a notification that is sent by an Agent to alert Console(s) of a change in some aspect of the system under management. Like QMF Data, Events may be formally defined by a Schema or not. Unlike QMF Data, Events are not manageable entities - they have no lifecycle. Events simply indicate a point in time where some interesting action occurred.
An AMQP timestamp value is associated with each QmfEvent instance. It indicates the moment in time the event occurred. This timestamp is mandatory.
A severity level may be associated with each QmfEvent instance. The following severity levels are supported:
```
 * "emerg"   - system is unusable * "alert"   - action must be taken immediately * "crit"    - the system is in a critical condition * "err"     - there is an error condition * "warning" - there is a warning condition * "notice"  - a normal but significant condition * "info"    - a purely informational message * "debug"   - messages generated to debug the application 
```
The default severity is "notice". @author Fraser Adams

     * Factory method to create an Unsubscribe Event Object with timestamp of now.
     * @return the newly created Unsubscribe Event Object.
     */
    public QmfEvent createUnsubscribeEvent()
    {
        QmfEvent unsubscribe = new QmfEvent(_unsubscribeSchema);
        unsubscribe.setSeverity("info");
        unsubscribe.setValue("dest", getStringValue("name"));
        // TODO Not sure of a way to get these for Java Broker Subscription.
        //unsubscribe.setValue("rhost", _connection.getName());
        //unsubscribe.setValue("user", getStringValue("authIdentity"));
        return unsubscribe;
    }

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     * Factory method to create a Queue Declare Event Object with timestamp of now.
     * @return the newly created Queue Declare Event Object.
     */
    public QmfEvent createQueueDeclareEvent()
    {
        QmfEvent queueDeclare = new QmfEvent(_queueDeclareSchema);
        queueDeclare.setSeverity("info");
        // TODO the _alternateExchangeName gets set some time after the Constructor - how do I get its value for
        // the queueDeclareEvent???!!!
        queueDeclare.setValue("altEx", _alternateExchangeName);
        queueDeclare.setValue("args", Collections.EMPTY_MAP); // TODO
        queueDeclare.setValue("autoDel", getBooleanValue("autoDelete"));
        queueDeclare.setValue("disp", "created");
        queueDeclare.setValue("durable", getBooleanValue("durable"));
        queueDeclare.setValue("excl", getBooleanValue("exclusive"));
        queueDeclare.setValue("qName", getStringValue("name"));
        // TODO Not sure of a way to get these for Java Broker Exchange.
        //queueDeclare.setValue("rhost", _connection.getName());
        //queueDeclare.setValue("user", getStringValue("authIdentity"));
        return queueDeclare;
    }

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     * Factory method to create a Queue Delete Event Object with timestamp of now.
     * @return the newly created Queue Delete Event Object.
     */
    public QmfEvent createQueueDeleteEvent()
    {
        QmfEvent queueDelete = new QmfEvent(_queueDeleteSchema);
        queueDelete.setSeverity("info");
        queueDelete.setValue("qName", getStringValue("name"));
        // TODO Not sure of a way to get these for Java Broker Exchange.
        //queueDelete.setValue("rhost", _connection.getName());
        //queueDelete.setValue("user", getStringValue("authIdentity"));
        return queueDelete;
    }

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            // The results of an Event delivered from an Agent
            if (opcode.equals("_data_indication") && content.equals("_event"))
            { // There are differences in the type of message sent by Qpid 0.8 and 0.10 onwards.
                if (AMQPMessage.isAMQPMap(message))
                { // 0.8 broker passes Events as amqp/map encoded as MapMessages (we convert into java.util.Map)
                    _eventListener.onEvent(new EventReceivedWorkItem(agent, new QmfEvent(AMQPMessage.getMap(message))));
                }
                else if (AMQPMessage.isAMQPList(message))
                { // 0.10 and above broker passes Events as amqp/list encoded as BytesMessage (needs decoding)
                  // 0.20 encodes amqp/list in a MapMessage!!?? AMQPMessage hopefully abstracts this detail.
                    List<Map> list = AMQPMessage.getList(message);
                    for (Map m : list)
                    {
                        _eventListener.onEvent(new EventReceivedWorkItem(agent, new QmfEvent(m)));
                    }
                }
                else
                {
                    _log.info("onMessage() Received Event message in incorrect format");

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    {
        if (wi instanceof EventReceivedWorkItem)
        {
            EventReceivedWorkItem item = (EventReceivedWorkItem)wi;
            Agent agent = item.getAgent();
            QmfEvent event = item.getEvent();
            String className = event.getSchemaClassId().getClassName();


            if (className.equals("queueDeclare"))
            {
                updateQueueCache();
            }
            else if (className.equals("queueThresholdExceeded"))
            {
                String queueName = event.getStringValue("qName");
                boolean matches = false;
                for (Pattern x : _filter)
                { // Check the queue name against the regexes in the filter List (if any)
                    Matcher m = x.matcher(queueName);
                    if (m.find())
                    {
                        matches = true;
                        break;
                    }
                }


                if (_filter.isEmpty() || matches)
                { // If there's no filter enabled or the filter matches the queue name we call purgeQueue().
                    long msgDepth = event.getLongValue("msgDepth");
                    purgeQueue(queueName, msgDepth);
                }
            }
        }
    }

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    public void onEvent(final WorkItem wi)
    {
        if (wi instanceof EventReceivedWorkItem)
        {
            EventReceivedWorkItem item = (EventReceivedWorkItem)wi;
            QmfEvent event = item.getEvent();
            System.out.println(event + " broker=" + _url);
        }
    }

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    public void onEvent(final WorkItem wi)
    {
        if (wi instanceof EventReceivedWorkItem)
        {
            EventReceivedWorkItem item = (EventReceivedWorkItem)wi;
            QmfEvent event = item.getEvent();
            String className = event.getSchemaClassId().getClassName();
            if (className.equals("subscribe"))
            {
                readWhitelist();
                String queueName = event.getStringValue("qName");
                String address = event.getStringValue("rhost");
                String timestamp = new Date(event.getTimestamp()/1000000l).toString();
                validateQueue(queueName, address, timestamp);
            }
        }
        else if (wi instanceof AgentRestartedWorkItem)
        {

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    {
        if (wi instanceof EventReceivedWorkItem)
        {
            EventReceivedWorkItem item = (EventReceivedWorkItem)wi;
            Agent agent = item.getAgent();
            QmfEvent event = item.getEvent();


            String className = event.getSchemaClassId().getClassName();
            if (className.equals("clientConnect") ||
                className.equals("clientDisconnect"))
            {
                _stateChanged = true;
            }

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     * Factory method to create a Bind Event Object with timestamp of now.
     * @return the newly created Bind Event Object.
     */
    public QmfEvent createBindEvent()
    {
        QmfEvent bind = new QmfEvent(_bindSchema);
        bind.setSeverity("info");
        bind.setValue("args", _binding.getArguments());
        bind.setValue("exName", _binding.getExchange().getName());
        bind.setValue("key", _binding.getName());
        bind.setValue("qName", _binding.getQueue().getName());
        // TODO Not sure of a way to get these for Java Broker Exchange.
        //bind.setValue("rhost", _connection.getName());
        //bind.setValue("user", getStringValue("authIdentity"));
        return bind;
    }

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     * Factory method to create an Unbind Event Object with timestamp of now.
     * @return the newly created Unbind Event Object.
     */
    public QmfEvent createUnbindEvent()
    {
        QmfEvent unbind = new QmfEvent(_unbindSchema);
        unbind.setSeverity("info");
        unbind.setValue("exName", _binding.getExchange().getName());
        unbind.setValue("key", _binding.getName());
        unbind.setValue("qName", _binding.getQueue().getName());
        // TODO Not sure of a way to get these for Java Broker Exchange.
        //unbind.setValue("rhost", _connection.getName());
        //unbind.setValue("user", getStringValue("authIdentity"));
        return unbind;
    }

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