Examples of org.xmlBlaster.engine.mime.I_AccessFilter

org.xmlBlaster.engine.mime.I_AccessFilter
This interface hides the real protocol used to check messages.
The interface may be used to filter messages on subscribe() or get() access. Only messages where the match() method returns true are sent via update() to the client

Note that you are not allowed to manipulate the content or XmlKey or QoS of a message with your plugin as this would affect all other subscribers (you are working on a reference to the original message).

The plugin with your filter rules must implement this interface.
Steps to add a new plugin:
- Code the plugin.
  Code a plugin which inherits from this interface. In the match() method code your specific filter rule. You get passed the MsgUnit object, which contains the content of a message. You look into the content and decide if the message matches your rule or not.
- Register the plugin.
  Register the plugin in xmlBlaster.properties file, for example
  MimeAccessPlugin[ContentLenFilter][1.0]=org.xmlBlaster.engine.mime.demo.ContentLenFilter,DEFAULT_MAX_LEN=80000,VERBOSE=false
@version $Revision: 1.10 $ @author xmlBlaster@marcelruff.info

                           "' domain='" + xmlKey.getDomain() + "'.");
            AccessFilterQos[] filterQos = keyMapping.getAccessFilterArr();
            if (filterQos != null && filterQos.length > 0) {
               if (log.isLoggable(Level.FINE)) log.fine("Found " + filterQos.length + " key specific filter rules in XmlKey ...");
               for (int jj=0; jj<filterQos.length; jj++) {
                  I_AccessFilter filter = glob.getRequestBroker().getAccessPluginManager().getAccessFilter(
                                                filterQos[jj].getType(),
                                                filterQos[jj].getVersion(), 
                                                msgUnit.getContentMime(),
                                                msgUnit.getContentMimeExtended());
                  if (log.isLoggable(Level.FINE)) log.fine("Checking filter='" + filterQos[jj].getQuery() + "' on message content='" +
                                 msgUnit.getContentStr() + "'");
                  SessionInfo sessionInfo = null; // TODO: Pass sessionInfo here
                  if (filter != null && filter.match(sessionInfo, msgUnit, filterQos[jj].getQuery())) {
                     if (log.isLoggable(Level.FINE)) log.fine("Found master='" + nodeMasterInfo.getNodeId().getId() + "' stratum=" +
                                    nodeMasterInfo.getStratum() + " for message '" + msgUnit.getLogId() + "' with filter='" + filterQos[jj].getQuery() + "'.");
                     return nodeMasterInfo; // Found the master nodeMasterInfo.getClusterNode(); 
                  }
               }
            }
            else
               return nodeMasterInfo; // Found the master nodeMasterInfo.getClusterNode(); 
         }
      }


      // Check for user supplied filters <master><filter>... These are the filter based queries
      AccessFilterQos[] filterQos = nodeMasterInfo.getAccessFilterArr();
      if (log.isLoggable(Level.FINE)) log.fine("Found " + filterQos.length + " global filter rules ...");
      for (int jj=0; jj<filterQos.length; jj++) {
         I_AccessFilter filter = glob.getRequestBroker().getAccessPluginManager().getAccessFilter(
                                       filterQos[jj].getType(),
                                       filterQos[jj].getVersion(), 
                                       msgUnit.getContentMime(),
                                       msgUnit.getContentMimeExtended());
         if (log.isLoggable(Level.FINE)) log.fine("Checking filter='" + filterQos[jj].getQuery() + "' on message content='" +
                        msgUnit.getContentStr() + "'");
         SessionInfo sessionInfo = null; // TODO: Pass sessionInfo here
         if (filter != null && filter.match(sessionInfo, msgUnit, filterQos[jj].getQuery())) {
            if (log.isLoggable(Level.FINE)) log.fine("Found master='" + nodeMasterInfo.getNodeId().getId() + "' stratum=" + nodeMasterInfo.getStratum() +
                           " for message '" + msgUnit.getLogId() + "' with filter='" + filterQos[jj].getQuery() + "'.");
            return nodeMasterInfo; // Found the master nodeMasterInfo.getClusterNode(); 
         }
      }

View Full Code Here

      if (filterQos != null) {
         //SubjectInfo publisher = (publisherSessionInfo == null) ? null : publisherSessionInfo.getSubjectInfo();
         //SubjectInfo destination = (sub.getSessionInfo() == null) ? null : sub.getSessionInfo().getSubjectInfo();
         for (int ii=0; ii<filterQos.length; ii++) {
            try {
               I_AccessFilter filter = requestBroker.getAccessPluginManager().getAccessFilter(
                                         filterQos[ii].getType(), filterQos[ii].getVersion(),
                                         getContentMime(), getContentMimeExtended());
               if (filter != null && filter.match(sub.getSessionInfo(),
                          msgUnitWrapper.getMsgUnit(), filterQos[ii].getQuery()) == false) {
                  return false;
               }
            }
            catch (Throwable e) {

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                     //topicHandler.checkFilter(SessionInfo publisherSessionInfo, SubscriptionInfo sub, MsgUnitWrapper msgUnitWrapper, boolean handleException)
                     AccessFilterQos[] filterQos = getQos.getAccessFilterArr();
                     if (filterQos != null) {
                        if (log.isLoggable(Level.FINE)) log.fine("Checking " + filterQos.length + " filters");
                        for (int jj=0; jj<filterQos.length; jj++) {
                           I_AccessFilter filter = getAccessPluginManager().getAccessFilter(
                                                        filterQos[jj].getType(),
                                                        filterQos[jj].getVersion(),
                                                        msgUnitWrapper.getContentMime(),
                                                        msgUnitWrapper.getContentMimeExtended());
                           if (log.isLoggable(Level.FINE)) log.fine("get("+xmlKeyExact.getOid()+") filter=" + filter + " qos=" + getQos.toXml());
                           if (filter != null && filter.match(sessionInfo,
                                                        msgUnitWrapper.getMsgUnit(),
                                                        filterQos[jj].getQuery()) == false)
                              continue NEXT_HISTORY; // filtered message is not send to client
                        }
                     }

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Related Classes of org.xmlBlaster.engine.mime.I_AccessFilter

org.xmlBlaster.engine.cluster.simpledomain.DomainToMaster

org.xmlBlaster.engine.RequestBroker

org.xmlBlaster.engine.TopicHandler

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