import static com.google.common.base.Preconditions.checkState;
+import com.google.common.annotations.VisibleForTesting;
+import com.google.common.base.Optional;
+import com.google.common.base.Preconditions;
+import com.google.common.collect.ImmutableList;
+
import java.net.URL;
import java.util.ArrayList;
import java.util.Collections;
import org.opendaylight.controller.sal.dom.broker.impl.SchemaContextProvider;
import org.opendaylight.yangtools.concepts.ListenerRegistration;
import org.opendaylight.yangtools.concepts.Registration;
-import org.opendaylight.yangtools.concepts.util.ListenerRegistry;
+import org.opendaylight.yangtools.util.ListenerRegistry;
import org.opendaylight.yangtools.yang.model.api.Module;
import org.opendaylight.yangtools.yang.model.api.SchemaContext;
-import org.opendaylight.yangtools.yang.model.api.SchemaServiceListener;
+import org.opendaylight.yangtools.yang.model.api.SchemaContextListener;
import org.opendaylight.yangtools.yang.parser.impl.util.URLSchemaContextResolver;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
-import com.google.common.base.Optional;
-import com.google.common.base.Preconditions;
-import com.google.common.collect.ImmutableList;
-
-public class GlobalBundleScanningSchemaServiceImpl implements SchemaContextProvider, SchemaService, ServiceTrackerCustomizer<SchemaServiceListener, SchemaServiceListener>, AutoCloseable {
+public class GlobalBundleScanningSchemaServiceImpl implements SchemaContextProvider, SchemaService, ServiceTrackerCustomizer<SchemaContextListener, SchemaContextListener>, AutoCloseable {
private static final Logger LOG = LoggerFactory.getLogger(GlobalBundleScanningSchemaServiceImpl.class);
- private final ListenerRegistry<SchemaServiceListener> listeners = new ListenerRegistry<>();
+ private final ListenerRegistry<SchemaContextListener> listeners = new ListenerRegistry<>();
private final URLSchemaContextResolver contextResolver = new URLSchemaContextResolver();
private final BundleScanner scanner = new BundleScanner();
private final BundleContext context;
- private ServiceTracker<SchemaServiceListener, SchemaServiceListener> listenerTracker;
- private BundleTracker<Iterable<Registration<URL>>> bundleTracker;
+ private ServiceTracker<SchemaContextListener, SchemaContextListener> listenerTracker;
+ private BundleTracker<Iterable<Registration>> 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() {
+ try {
+ instance.close();
+ } finally {
+ instance = null;
+ }
+ }
+
public BundleContext getContext() {
return context;
}
public void start() {
checkState(context != null);
- listenerTracker = new ServiceTracker<>(context, SchemaServiceListener.class, GlobalBundleScanningSchemaServiceImpl.this);
+ listenerTracker = new ServiceTracker<>(context, SchemaContextListener.class, GlobalBundleScanningSchemaServiceImpl.this);
bundleTracker = new BundleTracker<>(context, BundleEvent.RESOLVED | BundleEvent.UNRESOLVED, scanner);
bundleTracker.open();
listenerTracker.open();
}
@Override
- public ListenerRegistration<SchemaServiceListener> registerSchemaServiceListener(final SchemaServiceListener listener) {
+ public synchronized ListenerRegistration<SchemaContextListener> registerSchemaContextListener(final SchemaContextListener listener) {
Optional<SchemaContext> potentialCtx = contextResolver.getSchemaContext();
if(potentialCtx.isPresent()) {
listener.onGlobalContextUpdated(potentialCtx.get());
}
@Override
- public void close() throws Exception {
+ public void close() {
if (bundleTracker != null) {
bundleTracker.close();
}
if (listenerTracker != null) {
listenerTracker.close();
}
- // FIXME: Add listeners.close();
- }
+ for (ListenerRegistration<SchemaContextListener> l : listeners.getListeners()) {
+ l.close();
+ }
+ }
- private void updateContext(final SchemaContext snapshot) {
+ private synchronized void updateContext(final SchemaContext snapshot) {
Object[] services = listenerTracker.getServices();
- for (ListenerRegistration<SchemaServiceListener> listener : listeners) {
+ for (ListenerRegistration<SchemaContextListener> listener : listeners) {
try {
listener.getInstance().onGlobalContextUpdated(snapshot);
} catch (Exception e) {
}
if (services != null) {
for (Object rawListener : services) {
- SchemaServiceListener listener = (SchemaServiceListener) rawListener;
+ final SchemaContextListener listener = (SchemaContextListener) rawListener;
try {
listener.onGlobalContextUpdated(snapshot);
} catch (Exception e) {
}
}
- private class BundleScanner implements BundleTrackerCustomizer<Iterable<Registration<URL>>> {
+ private class BundleScanner implements BundleTrackerCustomizer<Iterable<Registration>> {
@Override
- public Iterable<Registration<URL>> addingBundle(final Bundle bundle, final BundleEvent event) {
+ public Iterable<Registration> addingBundle(final Bundle bundle, final BundleEvent event) {
if (bundle.getBundleId() == 0) {
return Collections.emptyList();
return Collections.emptyList();
}
- final List<Registration<URL>> urls = new ArrayList<>();
+ final List<Registration> urls = new ArrayList<>();
while (enumeration.hasMoreElements()) {
final URL u = enumeration.nextElement();
try {
}
@Override
- public void modifiedBundle(final Bundle bundle, final BundleEvent event, final Iterable<Registration<URL>> object) {
+ public void modifiedBundle(final Bundle bundle, final BundleEvent event, final Iterable<Registration> object) {
LOG.debug("Modified bundle {} {} {}", bundle, event, object);
}
*/
@Override
- public synchronized void removedBundle(final Bundle bundle, final BundleEvent event, final Iterable<Registration<URL>> urls) {
- for (Registration<URL> url : urls) {
+ public synchronized void removedBundle(final Bundle bundle, final BundleEvent event, final Iterable<Registration> urls) {
+ for (Registration url : urls) {
try {
url.close();
} catch (Exception e) {
}
@Override
- public SchemaServiceListener addingService(final ServiceReference<SchemaServiceListener> reference) {
+ public synchronized SchemaContextListener addingService(final ServiceReference<SchemaContextListener> reference) {
- SchemaServiceListener listener = context.getService(reference);
+ SchemaContextListener listener = context.getService(reference);
SchemaContext _ctxContext = getGlobalContext();
if (getContext() != null && _ctxContext != null) {
listener.onGlobalContextUpdated(_ctxContext);
}
@Override
- public void modifiedService(final ServiceReference<SchemaServiceListener> reference, final SchemaServiceListener service) {
+ public void modifiedService(final ServiceReference<SchemaContextListener> reference, final SchemaContextListener service) {
// NOOP
}
@Override
- public void removedService(final ServiceReference<SchemaServiceListener> reference, final SchemaServiceListener service) {
+ public void removedService(final ServiceReference<SchemaContextListener> reference, final SchemaContextListener service) {
context.ungetService(reference);
}
}