Examples of SamplingThrottleMediator

org.apache.synapse.mediators.eip.sample.SamplingThrottleMediator
This implements the well known Sample EIP (Enterprise Integration Pattern), which controls the flow of messages and limit the rate at which the messages are flowing through the sampler

Please note that the usage of this will require the sampler to be on the out-flow as well to correctly determine & to manage the rate.
@see org.apache.synapse.mediators.AbstractMediator

Examples of org.apache.synapse.mediators.eip.sample.SamplingThrottleMediator


    protected OMElement serializeSpecificMediator(Mediator mediator) {
        OMElement samplerElem = fac.createOMElement("sampler", synNS);
        saveTracingState(samplerElem, mediator);


        SamplingThrottleMediator samplingThrottleMediator = (SamplingThrottleMediator) mediator;


        if (samplingThrottleMediator.getId() != null) {
            samplerElem.addAttribute("id", samplingThrottleMediator.getId(), nullNS);
        }
        samplerElem.addAttribute("rate",
                Integer.toString(samplingThrottleMediator.getSamplingRate()), nullNS);
        samplerElem.addAttribute("unitTime",
                Long.toString(samplingThrottleMediator.getUnitTime()), nullNS);


        if (samplingThrottleMediator.isMessageQueueExplicitlySet()) {
            OMElement messageQueueElem = fac.createOMElement("messageQueue", synNS);
            messageQueueElem.addAttribute("class",
                    samplingThrottleMediator.getMessageQueue().getClass().getName(), nullNS);
            samplerElem.addChild(messageQueueElem);
        }


        if (samplingThrottleMediator.getTarget() != null) {
            samplerElem.addChild(
                    TargetSerializer.serializeTarget(samplingThrottleMediator.getTarget()));
        } else {
            handleException("Couldn't find the target for the sampler. " +
                    "Target is mandatory for a sampler");
        }

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Examples of org.apache.synapse.mediators.eip.sample.SamplingThrottleMediator

    private static final QName CLASS_ATTR
            = new QName(XMLConfigConstants.NULL_NAMESPACE, "class");


    protected 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");
                }

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Examples of org.apache.synapse.mediators.eip.sample.SamplingThrottleMediator


    public OMElement serializeSpecificMediator(Mediator mediator) {
        OMElement samplerElem = fac.createOMElement("sampler", synNS);
        saveTracingState(samplerElem, mediator);


        SamplingThrottleMediator samplingThrottleMediator = (SamplingThrottleMediator) mediator;


        if (samplingThrottleMediator.getId() != null) {
            samplerElem.addAttribute("id", samplingThrottleMediator.getId(), nullNS);
        }
        samplerElem.addAttribute("rate",
                Integer.toString(samplingThrottleMediator.getSamplingRate()), nullNS);
        samplerElem.addAttribute("unitTime",
                Long.toString(samplingThrottleMediator.getUnitTime()), nullNS);


        if (samplingThrottleMediator.isMessageQueueExplicitlySet()) {
            OMElement messageQueueElem = fac.createOMElement("messageQueue", synNS);
            messageQueueElem.addAttribute("class",
                    samplingThrottleMediator.getMessageQueue().getClass().getName(), nullNS);
            samplerElem.addChild(messageQueueElem);
        }


        if (samplingThrottleMediator.getTarget() != null) {
            samplerElem.addChild(
                    TargetSerializer.serializeTarget(samplingThrottleMediator.getTarget()));
        } else {
            handleException("Couldn't find the target for the sampler. " +
                    "Target is mandatory for a sampler");
        }

View Full Code Here

Examples of org.apache.synapse.mediators.eip.sample.SamplingThrottleMediator

    private static final QName CLASS_ATTR
            = new QName(XMLConfigConstants.NULL_NAMESPACE, "class");


    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");
                }

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