Caching Content

The cache interface provided in the callback to the TrafficEventListener is:

package com.mashery.trafficmanager.cache;
/*** Cache API which allows extensions to store and retrieve data from cache*/
public interface Cache {
  /**
  * Retrieves the value from the cache for the given key
  * @param key
  * @return
  * @throws CacheException
  */
  Object get(String key) throws CacheException;
  /**
  * Puts the value against the key in the cache for a given ttl
  * @param key
  * @param value
  * @param ttl
  * @throws CacheException
  */
  void put(String key, Object value, int ttl) throws CacheException;
}

A reference to the cache can be found on the ProcessorEvent which is reported on the callback. Here is an example of how to access cache on callback:

package com.company.extension;
@ProcessorBean(enabled=true, name=”com.company.extension.CustomProcessor”, immediate=true
public class CustomProcessor implements TrafficEventListener, ListenerLifeCycle{
  public void handleEvent(TrafficEvent event){
       ProcessorEvent processorEvent = (ProcessorEvent) event;
       Cache cacheReference = processorEvent.getCache();
       //Add data to cache
       try{
           cacheReference.put(“testkey”, “testValue”, 10)
       }catch(CacheException e){
        //load data or load default data
       }
    //write your custom processor code here
    }
}

A reference to cache is also available on the lifecycle callback:

package com.company.extension;
public class CustomProcessorLifeCycle implements ListenerLifeCycle{
   public void onLoad(LifeCycleContext ctx) throws ListenerLifeCycleException{
      Cache cache = ctx.getCache();
      // perform cache operations
   }
   public void onUnLoad(LifeCycleContext ctx){
   }
}

For more information, refer examples/CacheAccess.java.