import static com.google.common.base.Preconditions.checkState;
import java.net.URL;
+import java.util.ArrayList;
+import java.util.Collections;
import java.util.Enumeration;
+import java.util.List;
import org.opendaylight.controller.sal.core.api.model.SchemaService;
import org.opendaylight.controller.sal.dom.broker.impl.SchemaContextProvider;
import org.slf4j.LoggerFactory;
import com.google.common.base.Optional;
-import com.google.common.collect.ImmutableSet;
-import com.google.common.collect.ImmutableSet.Builder;
+import com.google.common.base.Preconditions;
+import com.google.common.collect.ImmutableList;
-public class GlobalBundleScanningSchemaServiceImpl implements //
- SchemaContextProvider, //
- SchemaService, //
- ServiceTrackerCustomizer<SchemaServiceListener, SchemaServiceListener>, //
- AutoCloseable {
- private static final Logger logger = LoggerFactory.getLogger(GlobalBundleScanningSchemaServiceImpl.class);
-
- private ListenerRegistry<SchemaServiceListener> listeners;
-
- private BundleContext context;
- private final BundleScanner scanner = new BundleScanner();
-
- private BundleTracker<ImmutableSet<Registration<URL>>> bundleTracker;
+public class GlobalBundleScanningSchemaServiceImpl implements SchemaContextProvider, SchemaService, ServiceTrackerCustomizer<SchemaServiceListener, SchemaServiceListener>, AutoCloseable {
+ private static final Logger LOG = LoggerFactory.getLogger(GlobalBundleScanningSchemaServiceImpl.class);
+ private final ListenerRegistry<SchemaServiceListener> 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 boolean starting = true;
+ private static GlobalBundleScanningSchemaServiceImpl instance;
- public ListenerRegistry<SchemaServiceListener> getListeners() {
- return listeners;
+ private GlobalBundleScanningSchemaServiceImpl(final BundleContext context) {
+ this.context = Preconditions.checkNotNull(context);
}
- public void setListeners(final ListenerRegistry<SchemaServiceListener> listeners) {
- this.listeners = listeners;
+ public synchronized static GlobalBundleScanningSchemaServiceImpl createInstance(final BundleContext ctx) {
+ Preconditions.checkState(instance == null);
+ instance = new GlobalBundleScanningSchemaServiceImpl(ctx);
+ instance.start();
+ return instance;
}
- public BundleContext getContext() {
- return context;
+ public synchronized static GlobalBundleScanningSchemaServiceImpl getInstance() {
+ Preconditions.checkState(instance != null, "Global Instance was not instantiated");
+ return instance;
}
- public void setContext(final BundleContext context) {
- this.context = context;
+ public BundleContext getContext() {
+ return context;
}
public void start() {
checkState(context != null);
- if (listeners == null) {
- listeners = new ListenerRegistry<>();
- }
listenerTracker = new ServiceTracker<>(context, SchemaServiceListener.class, GlobalBundleScanningSchemaServiceImpl.this);
- bundleTracker = new BundleTracker<ImmutableSet<Registration<URL>>>(context, BundleEvent.RESOLVED
- | BundleEvent.UNRESOLVED, scanner);
+ bundleTracker = new BundleTracker<>(context, BundleEvent.RESOLVED | BundleEvent.UNRESOLVED, scanner);
bundleTracker.open();
listenerTracker.open();
starting = false;
}
@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 {
listener.getInstance().onGlobalContextUpdated(snapshot);
} catch (Exception e) {
- logger.error("Exception occured during invoking listener", e);
+ LOG.error("Exception occured during invoking listener", e);
}
}
if (services != null) {
try {
listener.onGlobalContextUpdated(snapshot);
} catch (Exception e) {
- logger.error("Exception occured during invoking listener", e);
+ LOG.error("Exception occured during invoking listener {}", listener, e);
}
}
}
}
- private class BundleScanner implements BundleTrackerCustomizer<ImmutableSet<Registration<URL>>> {
+ private class BundleScanner implements BundleTrackerCustomizer<Iterable<Registration<URL>>> {
@Override
- public ImmutableSet<Registration<URL>> addingBundle(final Bundle bundle, final BundleEvent event) {
+ public Iterable<Registration<URL>> addingBundle(final Bundle bundle, final BundleEvent event) {
if (bundle.getBundleId() == 0) {
- return ImmutableSet.of();
+ return Collections.emptyList();
}
- Enumeration<URL> enumeration = bundle.findEntries("META-INF/yang", "*.yang", false);
- Builder<Registration<URL>> builder = ImmutableSet.<Registration<URL>> builder();
- while (enumeration != null && enumeration.hasMoreElements()) {
- Registration<URL> reg = contextResolver.registerSource(enumeration.nextElement());
- builder.add(reg);
+ final Enumeration<URL> enumeration = bundle.findEntries("META-INF/yang", "*.yang", false);
+ if (enumeration == null) {
+ return Collections.emptyList();
}
- ImmutableSet<Registration<URL>> urls = builder.build();
- if(urls.isEmpty()) {
- return urls;
+
+ final List<Registration<URL>> urls = new ArrayList<>();
+ while (enumeration.hasMoreElements()) {
+ final URL u = enumeration.nextElement();
+ try {
+ urls.add(contextResolver.registerSource(u));
+ LOG.debug("Registered {}", u);
+ } catch (Exception e) {
+ LOG.warn("Failed to register {}, ignoring it", e);
+ }
}
- tryToUpdateSchemaContext();
- return urls;
+
+ if (!urls.isEmpty()) {
+ LOG.debug("Loaded {} new URLs, rebuilding schema context", urls.size());
+ tryToUpdateSchemaContext();
+ }
+
+ return ImmutableList.copyOf(urls);
}
@Override
- public void modifiedBundle(final Bundle bundle, final BundleEvent event, final ImmutableSet<Registration<URL>> object) {
- logger.debug("Modified bundle {} {} {}", bundle, event, object);
+ public void modifiedBundle(final Bundle bundle, final BundleEvent event, final Iterable<Registration<URL>> object) {
+ LOG.debug("Modified bundle {} {} {}", bundle, event, object);
}
/**
*/
@Override
- public synchronized void removedBundle(final Bundle bundle, final BundleEvent event, final ImmutableSet<Registration<URL>> urls) {
+ public synchronized void removedBundle(final Bundle bundle, final BundleEvent event, final Iterable<Registration<URL>> urls) {
for (Registration<URL> url : urls) {
try {
url.close();
} catch (Exception e) {
- e.printStackTrace();
+ LOG.warn("Failed do unregister URL {}, proceeding", url, e);
}
}
tryToUpdateSchemaContext();
}
@Override
- public SchemaServiceListener addingService(final ServiceReference<SchemaServiceListener> reference) {
+ public synchronized SchemaServiceListener addingService(final ServiceReference<SchemaServiceListener> reference) {
SchemaServiceListener listener = context.getService(reference);
SchemaContext _ctxContext = getGlobalContext();
}
public synchronized void tryToUpdateSchemaContext() {
- if(starting ) {
+ if (starting) {
return;
}
Optional<SchemaContext> schema = contextResolver.tryToUpdateSchemaContext();
Code Review / controller.git / blobdiff