Examples with QmfException org.apache.qpid.qmf2.common.QmfException used on opensource projects

Example 26 with QmfException

use of org.apache.qpid.qmf2.common.QmfException in project qpid by apache.

the class QpidQueueStats method onEvent.

/**
 * Main Event handler. Checks if the WorkItem is a SubscriptionIndicationWorkItem, if it is it stores the object
 * in a Map and uses this to maintain state so we can record deltas such as enqueue and dequeue rates.
 * <p>
 * The AgentHeartbeatWorkItem is used to periodically compare the elapsed time against the Subscription duration
 * so that we can refresh the Subscription (or create a new one if necessary) in order to continue receiving
 * queue Management Object data from the broker.
 * <p>
 * When the AgentRestartedWorkItem is received we clear the state to remove any stale queue Management Objects.
 * @param wi a QMF2 WorkItem object
 */
public void onEvent(final WorkItem wi) {
    if (wi instanceof AgentHeartbeatWorkItem && _subscriptionId != null) {
        long elapsed = (long) Math.round((System.currentTimeMillis() - _startTime) / 1000.0f);
        if (elapsed > _subscriptionDuration) {
            try {
                _console.refreshSubscription(_subscriptionId);
                _startTime = System.currentTimeMillis();
            } catch (QmfException qmfe) {
                System.err.println("QmfException " + qmfe.getMessage() + " caught in QpidQueueStats onEvent");
                createQueueSubscription();
            }
        }
    } else if (wi instanceof AgentRestartedWorkItem) {
        _objects.clear();
    } else if (wi instanceof SubscriptionIndicationWorkItem) {
        SubscriptionIndicationWorkItem item = (SubscriptionIndicationWorkItem) wi;
        SubscribeIndication indication = item.getSubscribeIndication();
        String correlationId = indication.getConsoleHandle();
        if (correlationId.equals("queueStatsHandle")) {
            // If it is (and it should be!!) then it's our queue object Subscription
            List<QmfConsoleData> data = indication.getData();
            for (QmfConsoleData record : data) {
                ObjectId id = record.getObjectId();
                if (record.isDeleted()) {
                    // If the object was deleted by the Agent we remove it from out Map
                    _objects.remove(id);
                } else {
                    if (_objects.containsKey(id)) {
                        // If the object is already in the Map it's likely to be a statistics push from the broker.
                        Stats stats = _objects.get(id);
                        String name = stats.getName();
                        boolean matches = false;
                        for (Pattern x : _filter) {
                            // Check the queue name against the regexes in the filter List (if any)
                            Matcher m = x.matcher(name);
                            if (m.find()) {
                                matches = true;
                                break;
                            }
                        }
                        if (_filter.isEmpty() || matches) {
                            // If there's no filter enabled or the filter matches the queue name we display statistics.
                            QmfConsoleData lastSample = stats.getData();
                            stats.setData(record);
                            float deltaTime = record.getUpdateTime() - lastSample.getUpdateTime();
                            if (deltaTime > 1000000000.0f) {
                                float deltaEnqueues = record.getLongValue("msgTotalEnqueues") - lastSample.getLongValue("msgTotalEnqueues");
                                float deltaDequeues = record.getLongValue("msgTotalDequeues") - lastSample.getLongValue("msgTotalDequeues");
                                long msgDepth = record.getLongValue("msgDepth");
                                float enqueueRate = deltaEnqueues / (deltaTime / 1000000000.0f);
                                float dequeueRate = deltaDequeues / (deltaTime / 1000000000.0f);
                                System.out.printf("%-46s%10.2f%11d%13.2f%13.2f\n", name, deltaTime / 1000000000, msgDepth, enqueueRate, dequeueRate);
                            }
                        }
                    } else {
                        // If the object isn't in the Map it's likely to be a properties push from the broker.
                        if (!record.hasValue("name")) {
                            // This probably won't happen, but if it does we refresh the object to get its full state.
                            try {
                                record.refresh();
                            } catch (QmfException qmfe) {
                            }
                        }
                        String queueName = record.getStringValue("name");
                        _objects.put(id, new Stats(queueName, record));
                    }
                }
            }
        }
    }
}

Example 27 with QmfException

use of org.apache.qpid.qmf2.common.QmfException in project qpid by apache.

the class Agent method removeConnection.

// end of setConnection()
/**
 * Remove the AMQP connection from the Agent. Un-does the setConnection() operation.
 *
 * @param conn a javax.jms.Connection.
 */
public final void removeConnection(final Connection conn) throws QmfException {
    if (conn != _connection) {
        throw new QmfException("Attempt to delete unknown connection");
    }
    try {
        _timer.cancel();
        _connection.close();
    } catch (JMSException jmse) {
        throw new QmfException("Failed to remove connection, caught JMSException " + jmse.getMessage());
    }
    _connection = null;
}

Example 28 with QmfException

use of org.apache.qpid.qmf2.common.QmfException 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 29 with QmfException

use of org.apache.qpid.qmf2.common.QmfException in project qpid by apache.

the class Console method cancelSubscription.

// end of refreshSubscription()
/**
 * Terminates the given subscription.
 *
 * @param subscriptionId the ID of the subscription to be cancelled
 */
public void cancelSubscription(final String subscriptionId) throws QmfException {
    if (subscriptionId == null) {
        throw new QmfException("Called cancelSubscription() with null subscriptionId");
    }
    SubscriptionManager subscription = _subscriptionById.get(subscriptionId);
    if (subscription == null) {
        throw new QmfException("Called cancelSubscription() with invalid subscriptionId");
    }
    String consoleHandle = subscription.getConsoleHandle();
    Agent agent = subscription.getAgent();
    if (!agent.isActive()) {
        throw new QmfException("Called cancelSubscription() with inactive agent");
    }
    String agentName = agent.getName();
    try {
        MapMessage request = _syncSession.createMapMessage();
        request.setStringProperty("x-amqp-0-10.app-id", "qmf2");
        request.setStringProperty("method", "request");
        request.setStringProperty("qmf.opcode", "_subscribe_cancel_indication");
        request.setStringProperty("qpid.subject", agentName);
        request.setObject("_subscription_id", subscriptionId);
        synchronized (this) {
            if (!_subscriptionEmulationEnabled || !agentName.equals(_brokerAgentName)) {
                _requester.send(request);
            }
        }
        subscription.cancel();
    } catch (JMSException jmse) {
        _log.info("JMSException {} caught in cancelSubscription()", jmse.getMessage());
    }
}

Example 30 with QmfException

use of org.apache.qpid.qmf2.common.QmfException in project qpid by apache.

the class Console method removeConnection.

/**
 * Remove the AMQP connection from the console. Un-does the addConnection() operation, and releases
 * any Agents associated with the connection. All blocking methods are unblocked and given a failure
 * status. All outstanding asynchronous operations are cancelled without producing WorkItems.
 *
 * @param conn a javax.jms.Connection
 */
public void removeConnection(final Connection conn) throws QmfException {
    if (conn != _connection) {
        throw new QmfException("Attempt to delete unknown connection");
    }
    try {
        _timer.cancel();
        // Should we close() the connection here or just stop() it ???
        _connection.close();
    } catch (JMSException jmse) {
        throw new QmfException("Failed to remove connection, caught JMSException " + jmse.getMessage());
    }
    _connection = null;
}