Examples with MessageQueue org.apache.synapse.mediators.eip.sample.MessageQueue used on opensource projects

Example 1 with MessageQueue

use of org.apache.synapse.mediators.eip.sample.MessageQueue in project wso2-synapse by wso2.

the class SamplingThrottleMediatorFactory method createSpecificMediator.

public Mediator createSpecificMediator(OMElement omElement, Properties properties) {
    SamplingThrottleMediator samplingThrottleMediator = new SamplingThrottleMediator();
    processAuditStatus(samplingThrottleMediator, omElement);
    OMAttribute idAttribute = omElement.getAttribute(ID_ATTR);
    if (idAttribute != null) {
        samplingThrottleMediator.setId(idAttribute.getAttributeValue());
    }
    OMAttribute rateAttribute = omElement.getAttribute(RATE_ATTR);
    if (rateAttribute != null) {
        try {
            samplingThrottleMediator.setSamplingRate(Integer.parseInt(rateAttribute.getAttributeValue()));
        } catch (NumberFormatException nfe) {
            handleException("Sampling rate has to be an integer value, but found : " + rateAttribute.getAttributeValue());
        }
    }
    OMAttribute unitTimeAttribute = omElement.getAttribute(UNIT_TIME_ATTR);
    if (unitTimeAttribute != null) {
        try {
            samplingThrottleMediator.setUnitTime(Long.parseLong(unitTimeAttribute.getAttributeValue()));
        } catch (NumberFormatException nfe) {
            handleException("Sampling unitTime has to be a long value in milliseconds, " + "but found : " + rateAttribute.getAttributeValue());
        }
    }
    OMElement targetElem = omElement.getFirstChildWithName(TARGET_Q);
    if (targetElem != null) {
        Target target = TargetFactory.createTarget(targetElem, properties);
        samplingThrottleMediator.setTarget(target);
    } else {
        handleException("Sampler requires a target for the sampling mediation");
    }
    OMElement messageQueueElem = omElement.getFirstChildWithName(MESSAGE_QUEUE_Q);
    if (messageQueueElem != null && messageQueueElem.getAttribute(CLASS_ATTR) != null) {
        String className = messageQueueElem.getAttributeValue(CLASS_ATTR);
        try {
            Class messageQueueImplClass = Class.forName(className);
            Object obj = messageQueueImplClass.newInstance();
            if (obj instanceof MessageQueue) {
                samplingThrottleMediator.setMessageQueue((MessageQueue) obj);
            } else {
                handleException("Provided message queue class : " + className + " doesn't implement the org.apache.synapse.mediators." + "eip.sample.MessageQueue interface");
            }
        } catch (ClassNotFoundException e) {
            handleException("Couldn't find the class specified for the message queue " + "implementation : " + className);
        } catch (InstantiationException e) {
            handleException("Couldn't instantiate the message queue : " + className);
        } catch (IllegalAccessException e) {
            handleException("Couldn't instantiate the message queue : " + className);
        }
    }
    return samplingThrottleMediator;
}