import static com.google.common.base.Preconditions.checkState;
+import com.google.common.annotations.VisibleForTesting;
import java.net.URL;
import java.util.ArrayList;
import java.util.Collections;
private ServiceTracker<SchemaServiceListener, SchemaServiceListener> listenerTracker;
private BundleTracker<Iterable<Registration<URL>>> bundleTracker;
private boolean starting = true;
+ private static GlobalBundleScanningSchemaServiceImpl instance;
- public GlobalBundleScanningSchemaServiceImpl(final BundleContext context) {
+ private GlobalBundleScanningSchemaServiceImpl(final BundleContext context) {
this.context = Preconditions.checkNotNull(context);
}
+ public synchronized static GlobalBundleScanningSchemaServiceImpl createInstance(final BundleContext ctx) {
+ Preconditions.checkState(instance == null);
+ instance = new GlobalBundleScanningSchemaServiceImpl(ctx);
+ instance.start();
+ return instance;
+ }
+
+ public synchronized static GlobalBundleScanningSchemaServiceImpl getInstance() {
+ Preconditions.checkState(instance != null, "Global Instance was not instantiated");
+ return instance;
+ }
+
+ @VisibleForTesting
+ public static synchronized void destroyInstance() {
+ instance = null;
+ }
+
public BundleContext getContext() {
return context;
}
}
@Override
- public ListenerRegistration<SchemaServiceListener> registerSchemaServiceListener(final SchemaServiceListener listener) {
+ public synchronized ListenerRegistration<SchemaServiceListener> registerSchemaServiceListener(final SchemaServiceListener listener) {
Optional<SchemaContext> potentialCtx = contextResolver.getSchemaContext();
if(potentialCtx.isPresent()) {
listener.onGlobalContextUpdated(potentialCtx.get());
}
- private void updateContext(final SchemaContext snapshot) {
+ private synchronized void updateContext(final SchemaContext snapshot) {
Object[] services = listenerTracker.getServices();
for (ListenerRegistration<SchemaServiceListener> listener : listeners) {
try {
}
@Override
- public SchemaServiceListener addingService(final ServiceReference<SchemaServiceListener> reference) {
+ public synchronized SchemaServiceListener addingService(final ServiceReference<SchemaServiceListener> reference) {
SchemaServiceListener listener = context.getService(reference);
SchemaContext _ctxContext = getGlobalContext();