Examples with QmfAgentData org.apache.qpid.qmf2.agent.QmfAgentData used on opensource projects

Example 6 with QmfAgentData

use of org.apache.qpid.qmf2.agent.QmfAgentData in project qpid by apache.

the class AgentTest method onEvent.

public void onEvent(WorkItem wi) {
    System.out.println("WorkItem type: " + wi.getType());
    _control.incValue("methodCount", 1);
    if (wi.getType() == METHOD_CALL) {
        MethodCallWorkItem item = (MethodCallWorkItem) wi;
        MethodCallParams methodCallParams = item.getMethodCallParams();
        String methodName = methodCallParams.getName();
        ObjectId objectId = methodCallParams.getObjectId();
        String userId = methodCallParams.getUserId();
        userId = userId.equals("") ? "anonymous" : userId;
        QmfData inArgs = methodCallParams.getArgs();
        ObjectId controlAddress = _control.getObjectId();
        System.out.println("Method Call User ID = " + userId);
        try {
            if (objectId == null) {
                // Method invoked directly on Agent
                if (methodName.equals("toString")) {
                    QmfData outArgs = new QmfData();
                    outArgs.setValue("string", _agent.toString());
                    _agent.methodResponse(methodName, item.getHandle(), outArgs, null);
                }
            } else if (objectId.equals(controlAddress)) {
                if (methodName.equals("stop")) {
                    System.out.println("Invoked stop method");
                    String message = inArgs.getStringValue("message");
                    System.out.println("Stopping: message = " + message);
                    _agent.methodResponse(methodName, item.getHandle(), null, null);
                    _agent.destroy();
                    System.exit(1);
                } else if (methodName.equals("echo")) {
                    System.out.println("Invoked echo method");
                    _agent.methodResponse(methodName, item.getHandle(), inArgs, null);
                } else if (methodName.equals("event")) {
                    System.out.println("Invoked event method");
                    QmfEvent event = new QmfEvent(_eventSchema);
                    event.setSeverity((int) inArgs.getLongValue("severity"));
                    event.setValue("text", inArgs.getStringValue("text"));
                    _agent.raiseEvent(event);
                    _agent.methodResponse(methodName, item.getHandle(), null, null);
                } else if (methodName.equals("fail")) {
                    System.out.println("Invoked fail method");
                    QmfData error = new QmfData();
                    if (inArgs.getBooleanValue("useString")) {
                        error.setValue("error_text", inArgs.getStringValue("stringVal"));
                    } else {
                        error.setValue("whatHappened", "It Failed");
                        error.setValue("howBad", 75);
                        error.setValue("details", inArgs.getValue("details"));
                    }
                    _agent.methodResponse(methodName, item.getHandle(), null, error);
                } 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();
                    // Set subtype just to test
                    outArgs.setRefValue("childAddr", child.getObjectId(), "reference");
                    _agent.methodResponse(methodName, item.getHandle(), outArgs, null);
                }
            }
        } catch (QmfException qmfe) {
            System.err.println("QmfException " + qmfe.getMessage() + " caught: AgentTest failed");
            QmfData error = new QmfData();
            error.setValue("error_text", qmfe.getMessage());
            _agent.methodResponse(methodName, item.getHandle(), null, error);
        }
    }
}

Example 7 with QmfAgentData

use of org.apache.qpid.qmf2.agent.QmfAgentData in project qpid by apache.

the class Agent method handleQueryRequest.

/**
     * Handle the query request and send the response back to the Console.
     * @param handle the reply handle that contains the replyTo Address.
     * @param query the inbound query from the Console.
     */
@SuppressWarnings("unchecked")
private final void handleQueryRequest(final Handle handle, final QmfQuery query) {
    QmfQueryTarget target = query.getTarget();
    if (target == QmfQueryTarget.SCHEMA_ID) {
        List<Map> results = new ArrayList<Map>(_schemaCache.size());
        // Look up all SchemaClassId objects
        for (SchemaClassId classId : _schemaCache.keySet()) {
            results.add(classId.mapEncode());
        }
        // Send the response back to the Console.
        queryResponse(handle, results, "_schema_id");
    } else if (target == QmfQueryTarget.SCHEMA) {
        List<Map> results = new ArrayList<Map>(1);
        // Look up a SchemaClass object by the SchemaClassId obtained from the query
        SchemaClassId classId = query.getSchemaClassId();
        SchemaClass schema = _schemaCache.get(classId);
        if (schema != null) {
            results.add(schema.mapEncode());
        }
        // Send the response back to the Console.
        queryResponse(handle, results, "_schema");
    } else if (target == QmfQueryTarget.OBJECT_ID) {
        List<Map> results = new ArrayList<Map>(_objectIndex.size());
        // Look up all ObjectId objects
        for (ObjectId objectId : _objectIndex.keySet()) {
            results.add(objectId.mapEncode());
        }
        // Send the response back to the Console.
        queryResponse(handle, results, "_object_id");
    } else if (target == QmfQueryTarget.OBJECT) {
        // If this is implementing the AgentExternal model we pass the QmfQuery on in a QueryWorkItem
        if (this instanceof AgentExternal) {
            _eventListener.onEvent(new QueryWorkItem(handle, query));
            return;
        } else {
            //qmfContentType = "_data";
            if (query.getObjectId() != null) {
                List<Map> results = new ArrayList<Map>(1);
                // 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.mapEncode());
                }
                // Send the response back to the Console.
                queryResponse(handle, results, "_data");
            } 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........
                // N.B. the results list declared here is a generic List of Objects. We *must* only pass a List of
                // Map to queryResponse(), but conversely if the response items are sortable we need to sort them
                // before doing mapEncode(). Unfortunately we don't know if the items are sortable a priori so
                // we either add a Map or we add a QmfAgentData, then sort then mapEncode() each item. I'm not
                // sure of a more elegant way to do this without creating two lists, which might not be so bad
                // but we don't know the size of the list a priori either.
                List results = new ArrayList(_objectIndex.size());
                // It's unlikely that evaluating this query will return a mixture of sortable and notSortable 
                // QmfAgentData objects, but it's best to check if that has occurred as accidentally passing a
                // List of QmfAgentData instead of a List of Map to queryResponse() will break things.
                boolean sortable = false;
                boolean notSortable = false;
                for (QmfAgentData object : _objectIndex.values()) {
                    if (!object.isDeleted() && query.evaluate(object)) {
                        if (object.isSortable()) {
                            // If QmfAgentData is marked sortable we add the QmfAgentData object to the List
                            // so we can sort first before mapEncoding.
                            results.add(object);
                            sortable = true;
                        } else {
                            // If QmfAgentData is not marked sortable we mapEncode immediately and add the Map to List.
                            results.add(object.mapEncode());
                            notSortable = true;
                        }
                    }
                }
                // results List to avoid sending unconvertable data. Hopefully this condition should never occur.
                if (sortable && notSortable) {
                    _log.info("Query resulted in inconsistent mixture of sortable and non-sortable data.");
                    results.clear();
                } else if (sortable) {
                    Collections.sort(results);
                    int length = results.size();
                    for (int i = 0; i < length; i++) {
                        QmfAgentData object = (QmfAgentData) results.get(i);
                        results.set(i, object.mapEncode());
                    }
                }
                // Send the response back to the Console.
                queryResponse(handle, results, "_data");
            }
        }
    } else {
        raiseException(handle, "Query for _what => '" + target + "' not supported");
        return;
    }
}

Example 8 with QmfAgentData

use of org.apache.qpid.qmf2.agent.QmfAgentData in project qpid by apache.

the class Agent method addObject.

/**
     * Passes a reference to an instance of a managed QMF object to the Agent.
     * <p>
     * The object's name must uniquely identify this object among all objects known to this Agent.
     * <p>
     * This method creates an ObjectId for the QmfAgentData being added, it does this by first checking
     * the schema.
     * <p>
     * If an associated schema exists we look for the set of property names that have been
     * specified as idNames. If idNames exists we look for their values within the object and use that
     * to create the objectName. If we can't create a sensible name we use a randomUUID.
     * @param object the QmfAgentData object to be added
     */
public void addObject(final QmfAgentData object) throws QmfException {
    // There are some cases where a QmfAgentData Object might have already set its ObjectId, for example where
    // it may need to have a "well known" ObjectId. This is the case with the Java Broker Management Agent
    // where tools such as qpid-config might have made assumptions about its ObjectId rather than doing "discovery".
    ObjectId addr = object.getObjectId();
    if (addr == null) {
        SchemaClassId classId = object.getSchemaClassId();
        SchemaClass schema = _schemaCache.get(classId);
        // Try to create an objectName using the property names that have been specified as idNames in the schema
        StringBuilder buf = new StringBuilder();
        // Initialise idNames as an empty array as we want to check if a key has been used to construct the name.
        String[] idNames = {};
        if (schema != null && schema instanceof SchemaObjectClass) {
            idNames = ((SchemaObjectClass) schema).getIdNames();
            for (String property : idNames) {
                buf.append(object.getStringValue(property));
            }
        }
        String objectName = buf.toString();
        // exchange has name == "")
        if (objectName.length() == 0 && idNames.length == 0)
            objectName = UUID.randomUUID().toString();
        // Finish up the name by incorporating package and class names
        objectName = classId.getPackageName() + ":" + classId.getClassName() + ":" + objectName;
        // Now we've got a good name for the object we create its ObjectId and add that to the object
        addr = new ObjectId(_name, objectName, _epoch);
        object.setObjectId(addr);
    }
    QmfAgentData foundObject = _objectIndex.get(addr);
    if (foundObject != null) {
        // If a duplicate object has actually been Deleted we can reuse the address.
        if (!foundObject.isDeleted()) {
            throw new QmfException("Duplicate QmfAgentData Address");
        }
    }
    _objectIndex.put(addr, object);
    // Does the new object match any Subscriptions? If so add a reference to the matching Subscription and publish.
    for (Subscription subscription : _subscriptions.values()) {
        QmfQuery query = subscription.getQuery();
        if (query.getObjectId() != null) {
            if (query.getObjectId().equals(addr)) {
                object.addSubscription(subscription.getSubscriptionId(), subscription);
                object.publish();
            }
        } else if (query.evaluate(object)) {
            object.addSubscription(subscription.getSubscriptionId(), subscription);
            object.publish();
        }
    }
}

Example 9 with QmfAgentData

use of org.apache.qpid.qmf2.agent.QmfAgentData in project qpid by apache.

the class AgentExternalTest method populateData.

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");
}

Example 10 with QmfAgentData

use of org.apache.qpid.qmf2.agent.QmfAgentData in project qpid by apache.

the class AgentExternalTest method addObject.

public void addObject(QmfAgentData object) throws QmfException {
    ObjectId addr = _agent.allocObjectId(UUID.randomUUID().toString());
    object.setObjectId(addr);
    _objectIndex.put(addr, object);
    // Does the new object match any Subscriptions? If so add a reference to the matching Subscription and publish.
    for (Subscription subscription : _subscriptions.values()) {
        QmfQuery query = subscription.getQuery();
        if (query.getObjectId() != null) {
            if (query.getObjectId().equals(addr)) {
                object.addSubscription(subscription.getSubscriptionId(), subscription);
                object.publish();
            }
        } else if (query.evaluate(object)) {
            object.addSubscription(subscription.getSubscriptionId(), subscription);
            object.publish();
        }
    }
}