import java.util.ArrayList;
import java.util.Collection;
-import java.util.Collections;
import java.util.HashSet;
import java.util.LinkedHashMap;
import java.util.List;
import org.wamblee.general.Clock;
import org.wamblee.xml.XMLDocument;
import org.wamblee.xmlrouter.common.Id;
-import org.wamblee.xmlrouter.config.Config;
import org.wamblee.xmlrouter.config.DocumentType;
import org.wamblee.xmlrouter.config.Filter;
import org.wamblee.xmlrouter.config.Transformation;
import org.wamblee.xmlrouter.subscribe.Destination;
import org.wamblee.xmlrouter.subscribe.DestinationRegistry;
-// TODO concurrency.
+// TODO check intermediate types during transformation based on filters.
-public class XMLRouter implements Config, Gateway, DestinationRegistry {
+/**
+ * The XML Router.
+ *
+ * @author Erik Brakkee
+ *
+ */
+public class XMLRouter implements Gateway, DestinationRegistry {
private static final Logger LOGGER = Logger.getLogger(XMLRouter.class
.getName());
+ private AtomicLong sequenceNumbers;
private EventListener listener;
private Clock clock;
private AtomicLong nextEventId;
- private AtomicLong sequenceNumbers;
- private Map<Long, DocumentType> documentTypes;
- private Transformations transformations;
- private Map<Long, Filter> filters;
- private Map<Long, Destination> destinations;
- public XMLRouter(Clock aClock, EventListener aListener) {
+ private XMLRouterConfiguration config;
+
+ private Map<Id<Destination>, Destination> destinations;
+
+ public XMLRouter(Clock aClock, XMLRouterConfiguration aConfig,
+ EventListener aListener) {
+ sequenceNumbers = new AtomicLong(1);
listener = aListener;
clock = aClock;
nextEventId = new AtomicLong(clock.currentTimeMillis());
- sequenceNumbers = new AtomicLong(1);
- documentTypes = new LinkedHashMap<Long, DocumentType>();
- transformations = new Transformations();
- filters = new LinkedHashMap<Long, Filter>();
- destinations = new LinkedHashMap<Long, Destination>();
- }
-
- @Override
- public Id<DocumentType> addDocumentType(DocumentType aType) {
- long seqno = sequenceNumbers.getAndIncrement();
- documentTypes.put(seqno, aType);
- return new Id<DocumentType>(seqno);
- }
-
- @Override
- public void removeDocumentType(Id<DocumentType> aId) {
- documentTypes.remove(aId);
- }
-
- @Override
- public Collection<DocumentType> getDocumentTypes() {
- return Collections.unmodifiableCollection(documentTypes.values());
- }
-
- @Override
- public Id<Transformation> addTransformation(Transformation aTransformation) {
- return transformations.addTransformation(aTransformation);
- }
-
- @Override
- public void removeTransformation(Id<Transformation> aId) {
- transformations.removeTransformation(aId);
- }
-
- @Override
- public Collection<Transformation> getTransformations() {
- return transformations.getTransformations();
- }
-
- @Override
- public Id<Filter> addFilter(Filter aFilter) {
- long seqno = sequenceNumbers.getAndIncrement();
- filters.put(seqno, aFilter);
- return new Id<Filter>(seqno);
- }
-
- @Override
- public void removeFilter(Id<Filter> aId) {
- filters.remove(aId);
- }
-
- @Override
- public Collection<Filter> getFilters() {
- return Collections.unmodifiableCollection(filters.values());
+ config = aConfig;
+ destinations = new LinkedHashMap<Id<Destination>, Destination>();
}
@Override
public void publish(String aSource, DOMSource aEvent) {
+ config.startPublishEvent();
+ try {
+ publishImpl(aSource, aEvent);
+ } finally {
+ config.endPublishEvent();
+ }
+ }
+ private void publishImpl(String aSource, DOMSource aEvent) {
long time = clock.currentTimeMillis();
- Id<DOMSource> id = new Id<DOMSource>(nextEventId.getAndIncrement());
+
+ Id<DOMSource> id = new Id<DOMSource>(nextEventId.getAndIncrement() + "");
List<String> types = determineDocumentTypes(aEvent);
EventInfo info = new EventInfo(time, aSource, id, types, aEvent);
boolean delivered = false;
Set<String> possibleTargetTypes = new HashSet<String>();
- possibleTargetTypes.addAll(transformations
+ possibleTargetTypes.addAll(config.getTransformations()
.getPossibleTargetTypes(aInputType));
// ask each destination what target types, if any they want to have.
- for (Map.Entry<Long, Destination> entry : destinations.entrySet()) {
- long destinationId = entry.getKey();
+ for (Map.Entry<Id<Destination>, Destination> entry : destinations
+ .entrySet()) {
+ Id<Destination> destinationId = entry.getKey();
Destination destination = entry.getValue();
Collection<String> requested = destination
.chooseFromTargetTypes(possibleTargetTypes);
if (!requested.isEmpty()) {
// Deliver to the destination.
for (String targetType : requested) {
- TransformationPath path = transformations.getPath(
- aInputType, targetType);
+ TransformationPath path = config.getTransformations()
+ .getPath(aInputType, targetType);
List<Transformation> ts = path.getTransformations();
int i = 0;
boolean allowed = true;
// all transformations done and all filters still
// allow the event.
boolean result = destination.receive(transformed);
- listener.delivered(aInfo, ts, destinationId,
- destination.getName(), result);
+ listener.delivered(aInfo, ts, destinationId.getId(),
+ result);
delivered = delivered || result;
}
private boolean isAllowedByFilters(String aType, DOMSource aEvent) {
boolean allowed = true;
- for (Filter filter : filters.values()) {
+ for (Filter filter : config.getRouterConfig().filterConfig().values()) {
if (!filter.isAllowed(aType, aEvent)) {
allowed = false;
}
private List<String> determineDocumentTypes(DOMSource aEvent) {
List<String> res = new ArrayList<String>();
- for (DocumentType type : documentTypes.values()) {
+ for (DocumentType type : config.getRouterConfig().documentTypeConfig()
+ .values()) {
if (type.isInstance(aEvent)) {
res.add(type.getName());
}
return res;
}
- private void logEvent(String aMessage, String aSource, DOMSource aEvent,
- Exception aException) {
- LOGGER.log(Level.WARNING, aMessage + ": source '" + aSource +
- "': Event: '" + new XMLDocument(aEvent).print(true) + "'",
- aException);
- }
-
- private void logEvent(String aMessage, String aSource, DOMSource aEvent) {
- LOGGER.log(Level.WARNING,
- aMessage + ": " + eventToString(aSource, aEvent));
- }
-
private String eventToString(String aSource, DOMSource aEvent) {
return "source '" + aSource + "': Event: '" +
new XMLDocument(aEvent).print(true) + "'";
public Id<Destination> registerDestination(Destination aDestination) {
notNull("destination", aDestination);
long seqno = sequenceNumbers.getAndIncrement();
- Id<Destination> id = new Id<Destination>(seqno);
- destinations.put(seqno, new RobustDestination(id, aDestination));
+ Id<Destination> id = new Id<Destination>(seqno + "");
+ destinations.put(id, new RobustDestination(id, aDestination));
return id;
}
@Override
public void unregisterDestination(Id<Destination> aId) {
- destinations.remove(aId.getId());
+ destinations.remove(aId);
}
private void notNull(String aName, Object aValue) {
git://wamblee.org / xmlrouter / blobdiff