Examples of QmfAgentData

org.apache.qpid.qmf2.agent.QmfAgentData
The Agent manages the data it represents by the QmfAgentData class - a derivative of the QmfData class.
The Agent is responsible for managing the values of the properties within the object, as well as servicing the object's method calls. Unlike the Console, the Agent has full control of the state of the object.
In most cases, for efficiency, it is expected that Agents would actually manage objects that are subclasses of QmfAgentData and maintain subclass specific properties as primitives, only actually explicitly setting the underlying Map properties via setValue() etc. when the object needs to be "serialised". This would most obviously be done by extending the mapEncode() method (noting that it's important to call QmfAgentData's mapEncode() first via super.mapEncode(); as this will set the state of the underlying QmfData).
This class provides a number of methods aren't in the QMF2 API per se, but they are used to manage the association between a managed object and any subscriptions that might be interested in it.
The diagram below shows the relationship between the Subscription and QmfAgentData.

In particular the QmfAgentData maintains references to active subscriptions to allow agents to asynchronously push data to subscribing Consoles immediately that data becomes available.
The update() method indicates that the object's state has changed and the publish() method immediately sends the new state to any subscription.
The original intention was to "auto update" by calling these from the setValue() method. Upon reflection this seems a bad idea, as in many cases there may be several properties that an Agent may wish to change which would lead to unnecessary calls to currentTimeMillis(), but also as theSubscription update is run via a TimerTask it is possible that an update indication could get sent part way through setting an object's overall state. Similarly calling the publish() method directly from setValue() would force an update indication on partial changes of state, which is generally not the desired behaviour. @author Fraser Adams

Examples of org.apache.qpid.qmf2.agent.QmfAgentData


    public void populateData() throws QmfException
    {
        System.out.println("*** BigPayloadAgentTest creating a control object ***");


        _control = new QmfAgentData(_controlSchema);
        _control.setValue("name", "controller");
        _agent.addObject(_control);
        System.out.println("BigPayloadAgentTest Schema control object added OK");
    }

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Examples of org.apache.qpid.qmf2.agent.QmfAgentData

            registerObjectClass(mammal);
            registerObjectClass(insect);
            registerObjectClass(reptile);
            registerObjectClass(bird);


            QmfAgentData cat = new QmfAgentData(mammal);
            cat.setValue("name", "cat");
            cat.setValue("legs", 4l);
            addObject(cat);


            QmfAgentData dog = new QmfAgentData(mammal);
            dog.setValue("name", "dog");
            dog.setValue("legs", 4l);
            addObject(dog);


            QmfAgentData rabbit = new QmfAgentData(mammal);
            rabbit.setValue("name", "rabbit");
            rabbit.setValue("legs", 4);
            addObject(rabbit);


            QmfAgentData horse = new QmfAgentData(mammal);
            horse.setValue("name", "horse");
            horse.setValue("legs", 4);
            addObject(horse);


            QmfAgentData human = new QmfAgentData(mammal);
            human.setValue("name", "human");
            human.setValue("legs", 2);
            addObject(human);




            QmfAgentData wasp = new QmfAgentData(insect);
            wasp.setValue("name", "wasp");
            wasp.setValue("legs", 6);
            addObject(wasp);


            QmfAgentData ant = new QmfAgentData(insect);
            ant.setValue("name", "ant");
            ant.setValue("legs", 6);
            addObject(ant);


            QmfAgentData crocodile = new QmfAgentData(reptile);
            crocodile.setValue("name", "crocodile");
            crocodile.setValue("legs", 4);
            addObject(crocodile);


            QmfAgentData gecko = new QmfAgentData(reptile);
            gecko.setValue("name", "gecko");
            gecko.setValue("legs", 4);
            addObject(gecko);


            QmfAgentData python = new QmfAgentData(reptile);
            python.setValue("name", "python");
            python.setValue("legs", 0);
            addObject(python);


            QmfAgentData hawk = new QmfAgentData(bird);
            hawk.setValue("name", "hawk");
            hawk.setValue("legs", 2);
            addObject(hawk);


            QmfAgentData ostrich = new QmfAgentData(bird);
            ostrich.setValue("name", "ostrich");
            ostrich.setValue("legs", 2);
            addObject(ostrich);




            System.out.println("total number of objects registered: " + _objectIndex.size());

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Examples of org.apache.qpid.qmf2.agent.QmfAgentData


        if (query.getObjectId() != null)
        {
            // Look up a QmfAgentData object by the ObjectId obtained from the query
            ObjectId objectId = query.getObjectId();
            QmfAgentData object = _objectIndex.get(objectId);
            if (object != null && !object.isDeleted())
            {
                results.add(new QmfConsoleData(object.mapEncode(), null));
            }
        }
        else
        {
            for (QmfAgentData object : _objectIndex.values())
            {
                if (!object.isDeleted() && query.evaluate(object))
                {
                    results.add(new QmfConsoleData(object.mapEncode(), null));
                }
            }
        }


        return results;

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Examples of org.apache.qpid.qmf2.agent.QmfAgentData

                    else if (methodName.equals("create_child"))
                    {
                        System.out.println("Invoked create_child method");
                        String childName = inArgs.getStringValue("name");
                        System.out.println("childName = " + childName);
                        QmfAgentData child = new QmfAgentData(_childSchema);
                        child.setValue("name", childName);
                        addObject(child);
                        QmfData outArgs = new QmfData();
                        outArgs.setRefValue("childAddr", child.getObjectId(), "reference"); // Set suptype just to test
                        _agent.methodResponse(methodName, item.getHandle(), outArgs, null);
                    }
                }
            }
            catch (QmfException qmfe)
            {
                System.err.println("QmfException " + qmfe.getMessage() + " caught: AgentExternalTest failed");
                QmfData error = new QmfData();
                error.setValue("error_text", qmfe.getMessage());
                _agent.methodResponse(methodName, item.getHandle(), null, error);
            }
        }


        if (wi.getType() == QUERY)
        {
            QueryWorkItem item = (QueryWorkItem)wi;
            QmfQuery query = item.getQmfQuery();


            System.out.println("Query User ID = " + item.getUserId());


            if (query.getObjectId() != null)
            {
                // Look up a QmfAgentData object by the ObjectId obtained from the query
                ObjectId objectId = query.getObjectId();
                QmfAgentData object = _objectIndex.get(objectId);
                if (object != null && !object.isDeleted())
                {
                    _agent.queryResponse(item.getHandle(), object);
                }
                _agent.queryComplete(item.getHandle(), 0);
            }
            else
            {
                // Look up QmfAgentData objects by the SchemaClassId obtained from the query
                // This is implemented by a linear search and allows searches with only the className specified.
                // Linear searches clearly don't scale brilliantly, but the number of QmfAgentData objects managed
                // by an Agent is generally fairly small, so it should be OK. Note that this is the same approach
                // taken by the C++ broker ManagementAgent, so if it's a problem here........
                for (QmfAgentData object : _objectIndex.values())
                {
                    if (!object.isDeleted() && query.evaluate(object))
                    {
                        _agent.queryResponse(item.getHandle(), object);
                    }
                }
                _agent.queryComplete(item.getHandle(), 0);

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Examples of org.apache.qpid.qmf2.agent.QmfAgentData


    public void populateData() throws QmfException
    {
        System.out.println("*** AgentExternalTest creating a control object ***");


        _control = new QmfAgentData(_controlSchema);
        _control.setValue("state", "OPERATIONAL");
        _control.setValue("methodCount", 0);


        addObject(_control);
        System.out.println("AgentExternalTest Schema control object added OK");

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Examples of org.apache.qpid.qmf2.agent.QmfAgentData

        {
            if (query.getObjectId() != null)
            {
                // Look up a QmfAgentData object by the ObjectId obtained from the query
                ObjectId objectId = query.getObjectId();
                QmfAgentData object = _objectIndex.get(objectId);
                if (object != null && !object.isDeleted())
                {
                    results.add(object);
                }
            }
            else
            {
                // Look up QmfAgentData objects evaluating the query
                for (QmfAgentData object : _objectIndex.values())
                {
                    if (!object.isDeleted() && query.evaluate(object))
                    {
                        results.add(object);
                    }
                }
            }

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Examples of org.apache.qpid.qmf2.agent.QmfAgentData

            // Reap any QmfAgentData Objects that have been marked as Deleted
            // Use the iterator approach rather than foreach as we may want to call iterator.remove() to zap an entry
            Iterator<QmfAgentData> i = _objectIndex.values().iterator();
            while (i.hasNext())
            {
                QmfAgentData object = i.next();
                if (object.isDeleted())
                {
System.out.println("****** Removing deleted Object *******");
                    i.remove();
                }
            }

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Examples of org.apache.qpid.qmf2.agent.QmfAgentData

                    else if (methodName.equals("create_child"))
                    {
                        System.out.println("Invoked create_child method");
                        String childName = inArgs.getStringValue("name");
                        System.out.println("childName = " + childName);
                        QmfAgentData child = new QmfAgentData(_childSchema);
                        child.setValue("name", childName);
                        _agent.addObject(child);
                        QmfData outArgs = new QmfData();
                        outArgs.setRefValue("childAddr", child.getObjectId(), "reference"); // Set subtype just to test
                        _agent.methodResponse(methodName, item.getHandle(), outArgs, null);
                    }
                }
            }
            catch (QmfException qmfe)

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Examples of org.apache.qpid.qmf2.agent.QmfAgentData


    public void populateData() throws QmfException
    {
        System.out.println("*** AgentTest creating a control object ***");


        _control = new QmfAgentData(_controlSchema);
        _control.setValue("state", "OPERATIONAL");
        _control.setValue("methodCount", 0);
        _agent.addObject(_control);
        System.out.println("AgentTest Schema control object added OK");
    }

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Examples of org.apache.qpid.qmf2.agent.QmfAgentData

                            {
                                ObjectId objectId =
                                        new ObjectId("", "org.apache.qpid.broker:exchange:" + alternateExchange, 0);


                                // Look up Exchange QmfAgentData by ObjectId from the Agent's internal Object store.
                                QmfAgentData object = agent.getObject(objectId);
                                if (object != null)
                                {
                                    org.apache.qpid.server.qmf2.agentdata.Exchange ex = 
                                        (org.apache.qpid.server.qmf2.agentdata.Exchange)object;

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