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 javax.xml.transform.dom.DOMSource;
import org.wamblee.general.Clock;
+import org.wamblee.general.Pair;
import org.wamblee.xml.XMLDocument;
import org.wamblee.xmlrouter.common.Id;
import org.wamblee.xmlrouter.config.DocumentType;
import org.wamblee.xmlrouter.config.Filter;
-import org.wamblee.xmlrouter.config.RouterConfig;
import org.wamblee.xmlrouter.config.Transformation;
import org.wamblee.xmlrouter.listener.EventInfo;
import org.wamblee.xmlrouter.listener.EventListener;
import org.wamblee.xmlrouter.subscribe.Destination;
import org.wamblee.xmlrouter.subscribe.DestinationRegistry;
-// TODO concurrency.
-
-public class XMLRouter implements RouterConfig, 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<Id<DocumentType>, DocumentType> documentTypes;
- private Transformations transformations;
- private Map<Id<Filter>, Filter> filters;
+
+ private XMLRouterConfiguration config;
+
private Map<Id<Destination>, Destination> destinations;
- public XMLRouter(Clock aClock, EventListener aListener) {
+ 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<Id<DocumentType>, DocumentType>();
- transformations = new Transformations();
- filters = new LinkedHashMap<Id<Filter>, Filter>();
+ config = aConfig;
destinations = new LinkedHashMap<Id<Destination>, Destination>();
}
- @Override
- public Id<DocumentType> addDocumentType(DocumentType aType) {
- long seqno = sequenceNumbers.getAndIncrement();
- documentTypes.put(new Id<DocumentType>(seqno), aType);
- return new Id<DocumentType>(seqno);
- }
-
- @Override
- public void removeDocumentType(Id<DocumentType> aId) {
- documentTypes.remove(aId);
- }
-
- @Override
- public Collection<Id<DocumentType>> getDocumentTypes() {
- return Collections.unmodifiableCollection(documentTypes.keySet());
- }
-
- @Override
- public DocumentType getDocumentType(Id<DocumentType> aId) {
- return documentTypes.get(aId);
- }
-
- @Override
- public Id<Transformation> addTransformation(Transformation aTransformation) {
- return transformations.addTransformation(aTransformation);
- }
-
- @Override
- public void removeTransformation(Id<Transformation> aId) {
- transformations.removeTransformation(aId);
- }
-
- @Override
- public Collection<Id<Transformation>> getTransformations() {
- return transformations.getTransformations();
- }
-
- @Override
- public Transformation getTransformation(Id<Transformation> aId) {
- return transformations.getTransformation(aId);
- }
-
- @Override
- public Id<Filter> addFilter(Filter aFilter) {
- long seqno = sequenceNumbers.getAndIncrement();
- filters.put(new Id<Filter>(seqno), aFilter);
- return new Id<Filter>(seqno);
- }
-
- @Override
- public void removeFilter(Id<Filter> aId) {
- filters.remove(aId);
- }
-
- @Override
- public Collection<Id<Filter>> getFilters() {
- return Collections.unmodifiableCollection(filters.keySet());
- }
-
- @Override
- public Filter getFilter(Id<Filter> aId) {
- return filters.get(aId);
- }
-
@Override
public void publish(String aSource, DOMSource aEvent) {
-
long time = clock.currentTimeMillis();
- Id<DOMSource> id = new Id<DOMSource>(nextEventId.getAndIncrement());
- List<String> types = determineDocumentTypes(aEvent);
+
+ Pair<ExtendedRouterConfig, TransformationPaths> snapshotconfig = config
+ .getConfig();
+
+ Id<DOMSource> id = new Id<DOMSource>(nextEventId.getAndIncrement() + "");
+ List<String> types = determineDocumentTypes(snapshotconfig.getFirst()
+ .documentTypeConfig().values(), aEvent);
EventInfo info = new EventInfo(time, aSource, id, types, aEvent);
boolean delivered = false;
try {
List<String> filteredInputTypes = determineFilteredInputTypes(
- types, aEvent);
+ snapshotconfig.getFirst().filterConfig().values(), types,
+ aEvent);
if (filteredInputTypes.isEmpty()) {
if (LOGGER.isLoggable(Level.FINE)) {
String doc = new XMLDocument(aEvent).print(true);
LOGGER
.log(
Level.FINE,
- "Event ''0}'' from source {1} removed because of filters.",
+ "Event ''{0}'' from source ''{1}'' removed because of filters.",
new Object[] { doc, aSource });
}
}
// This is however certainly not the main case.
for (String inputType : filteredInputTypes) {
- boolean result = deliverEvent(info, inputType);
+ boolean result = deliverEvent(snapshotconfig.getFirst()
+ .filterConfig().values(), snapshotconfig.getSecond(), info,
+ inputType);
delivered = delivered || result;
}
} finally {
}
}
- private boolean deliverEvent(EventInfo aInfo, String aInputType) {
+ private boolean deliverEvent(Collection<Filter> aFilters,
+ TransformationPaths aTransformations, EventInfo aInfo, String aInputType) {
boolean delivered = false;
Set<String> possibleTargetTypes = new HashSet<String>();
- possibleTargetTypes.addAll(transformations
+ possibleTargetTypes.addAll(aTransformations
.getPossibleTargetTypes(aInputType));
// ask each destination what target types, if any they want to have.
if (!requested.isEmpty()) {
// Deliver to the destination.
for (String targetType : requested) {
- TransformationPath path = transformations.getPath(
+ TransformationPath path = aTransformations.getPath(
aInputType, targetType);
List<Transformation> ts = path.getTransformations();
int i = 0;
aInfo.getEvent(), aInputType, t, orig);
}
- if (!isAllowedByFilters(t.getToType(), transformed)) {
+ if (!isAllowedByFilters(aFilters, t.getToType(),
+ transformed)) {
allowed = false;
}
i++;
// allow the event.
boolean result = destination.receive(transformed);
listener.delivered(aInfo, ts, destinationId.getId(),
- destination.getName(), result);
+ result);
delivered = delivered || result;
}
return delivered;
}
- private List<String> determineFilteredInputTypes(List<String> aTypes,
- DOMSource aEvent) {
+ private List<String> determineFilteredInputTypes(
+ Collection<Filter> aFilters, List<String> aTypes, DOMSource aEvent) {
// apply filters to the input
List<String> filteredTypes = new ArrayList<String>();
for (String type : aTypes) {
- boolean allowed = isAllowedByFilters(type, aEvent);
+ boolean allowed = isAllowedByFilters(aFilters, type, aEvent);
if (allowed) {
filteredTypes.add(type);
}
return filteredTypes;
}
- private boolean isAllowedByFilters(String aType, DOMSource aEvent) {
+ private boolean isAllowedByFilters(Collection<Filter> aFilters,
+ String aType, DOMSource aEvent) {
boolean allowed = true;
- for (Filter filter : filters.values()) {
+ for (Filter filter : aFilters) {
if (!filter.isAllowed(aType, aEvent)) {
allowed = false;
}
return allowed;
}
- private List<String> determineDocumentTypes(DOMSource aEvent) {
+ private List<String> determineDocumentTypes(
+ Collection<DocumentType> aTypes, DOMSource aEvent) {
List<String> res = new ArrayList<String>();
- for (DocumentType type : documentTypes.values()) {
+ for (DocumentType type : aTypes) {
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);
+ Id<Destination> id = new Id<Destination>(seqno + "");
destinations.put(id, new RobustDestination(id, aDestination));
return id;
}
git://wamblee.org / xmlrouter / blobdiff