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

Example 6 with SchemaClass

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

the class Console method getSchema.

/**
     * Return a list of all available class SchemaClass from a specified Agent.
     * <p>
     * This call will return cached information if it is available.  If not, it will send a query message
     * to the remote agent and block waiting for a response. The timeout argument specifies the maximum time
     * to wait for a response from the agent.
     *
     * @param schemaClassId the SchemaClassId we wish to return schema information for.
     * @param agent the Agent we want to retrieve the schema from
     */
public List<SchemaClass> getSchema(final SchemaClassId schemaClassId, final Agent agent) {
    // First look to see if there are cached results and if there are return those.
    List<SchemaClass> results = agent.getSchema(schemaClassId);
    if (results.size() > 0) {
        return results;
    }
    String agentName = agent.getName();
    //System.out.println("getSchema for agent " + agentName);
    results = new ArrayList<SchemaClass>();
    try {
        MapMessage request = _syncSession.createMapMessage();
        request.setJMSReplyTo(_replyAddress);
        request.setStringProperty("x-amqp-0-10.app-id", "qmf2");
        request.setStringProperty("method", "request");
        request.setStringProperty("qmf.opcode", "_query_request");
        request.setStringProperty("qpid.subject", agentName);
        // Create a QMF Query for an "SCHEMA" target
        request.setObject("_what", "SCHEMA");
        request.setObject("_schema_id", schemaClassId.mapEncode());
        // it would be somewhat unfortunate if their response got interleaved with ours!!
        synchronized (this) {
            _requester.send(request);
            Message response = _responder.receive(_replyTimeout * 1000);
            if (response == null) {
                _log.info("No response received in getSchema()");
                return Collections.emptyList();
            }
            if (AMQPMessage.isAMQPList(response)) {
                List<Map> mapResults = AMQPMessage.getList(response);
                for (Map content : mapResults) {
                    SchemaClass schema = new SchemaObjectClass(content);
                    if (schema.getClassId().getType().equals("_event")) {
                        schema = new SchemaEventClass(content);
                    }
                    //schema.listValues();
                    results.add(schema);
                }
            } else if (AMQPMessage.isAMQPMap(response)) {
            // Error responses are returned as MapMessages, though they are being ignored here.
            //System.out.println("Console.getSchema() no results for " + agentName);
            //QmfData exception = new QmfData(AMQPMessage.getMap(response));
            //System.out.println(agentName + " " + exception.getStringValue("error_text"));
            } else {
                _log.info("getSchema() Received response message in incorrect format");
            }
        }
    } catch (JMSException jmse) {
        _log.info("JMSException {} caught in getSchema()", jmse.getMessage());
    }
    agent.setSchema(schemaClassId, results);
    return results;
}

Example 7 with SchemaClass

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

the class Console method getSchema.

// end of onMessage() 
/**
     * Retrieve the schema for a List of classes.
     * This method explicitly retrieves the schema from the remote Agent and is generally used for schema
     * discovery when an Agent is added or updated.
     *
     * @param classes the list of SchemaClassId of the classes who's schema we want to retrieve
     * @param agent the Agent we want to retrieve the schema from
     */
private List<SchemaClass> getSchema(final List<SchemaClassId> classes, final Agent agent) {
    List<SchemaClass> results = new ArrayList<SchemaClass>();
    for (SchemaClassId classId : classes) {
        // Clear Agent's schema value for classId
        agent.setSchema(classId, Collections.<SchemaClass>emptyList());
        results.addAll(getSchema(classId, agent));
    }
    return results;
}