Accessing Package Key EAVs in the Custom Processor

For example, this sample processor looks for "user_defined_key" EAVs for a package key:

package com.mashery.processor;
 
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
 
import com.mashery.trafficmanager.event.listener.TrafficEventListener;
import com.mashery.trafficmanager.event.listener.Authenticator;
import com.mashery.trafficmanager.event.model.TrafficEvent;
import com.mashery.trafficmanager.event.processor.model.PostProcessEvent;
import com.mashery.trafficmanager.event.processor.model.PreProcessEvent;
import com.mashery.trafficmanager.model.core.ExtendedAttributes;
import com.mashery.trafficmanager.processor.ProcessorBean;
import com.mashery.trafficmanager.processor.ProcessorException;
 
@ProcessorBean(enabled = true, name = "PrePostProcessing", immediate = true)
 
public class PrePostProcessing implements TrafficEventListener,Authenticator {
     
    private final Logger log = LoggerFactory.getLogger(PrePostProcessing.class);
     
    @Override
    public void handleEvent(TrafficEvent event) {
        try {
            if (event instanceof PreProcessEvent) {
                preProcess((PreProcessEvent) event);
            } else if (event instanceof PostProcessEvent) {
                postProcess((PostProcessEvent) event);
            } else if (event instanceof AuthenticationEvent) {
               authenticate((AuthenticationEvent) event)
            }
        } catch (ProcessorException e) {
            log.error("Exception occurred when handling processor event");
        }
    }
 
    //In the below snippet we are extracting the package key and checking its value.
 
    private void preProcess(PreProcessEvent event) throws ProcessorException {
        ExtendedAttributes attrs = (event).getKey().getExtendedAttributes();
        String strAllowed = attrs.getValue("user_defined_key");
    }
    private void postProcess(PostProcessEvent event) throws ProcessorException {
        ExtendedAttributes attrs = (event).getKey().getExtendedAttributes();
        String strAllowed = attrs.getValue("user_defined_key");
    }
    private void authenticate(AuthenticationEvent event)
            throws ProcessorException {
        ExtendedAttributes attrs = (event).getKey().getExtendedAttributes();
        String strAllowed = attrs.getValue("user_defined_key");
    }
}