+++ /dev/null
-/*
- * Copyright (c) 2013 Cisco Systems, Inc. and others. All rights reserved.
- *
- * This program and the accompanying materials are made available under the
- * terms of the Eclipse Public License v1.0 which accompanies this distribution,
- * and is available at http://www.eclipse.org/legal/epl-v10.html
- */
-package org.opendaylight.controller.sal.dom.broker;
-
-import static com.google.common.base.Preconditions.checkState;
-
-import java.net.URL;
-import java.util.Enumeration;
-
-import org.opendaylight.controller.sal.core.api.model.SchemaService;
-import org.opendaylight.controller.sal.core.api.model.SchemaServiceListener;
-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.yang.model.api.Module;
-import org.opendaylight.yangtools.yang.model.api.SchemaContext;
-import org.opendaylight.yangtools.yang.parser.impl.util.URLSchemaContextResolver;
-import org.osgi.framework.Bundle;
-import org.osgi.framework.BundleContext;
-import org.osgi.framework.BundleEvent;
-import org.osgi.framework.ServiceReference;
-import org.osgi.util.tracker.BundleTracker;
-import org.osgi.util.tracker.BundleTrackerCustomizer;
-import org.osgi.util.tracker.ServiceTracker;
-import org.osgi.util.tracker.ServiceTrackerCustomizer;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import com.google.common.base.Optional;
-import com.google.common.collect.ImmutableSet;
-import com.google.common.collect.ImmutableSet.Builder;
-
-public class SchemaServiceImpl implements //
- SchemaContextProvider, //
- SchemaService, //
- ServiceTrackerCustomizer<SchemaServiceListener, SchemaServiceListener>, //
- AutoCloseable {
- private static final Logger logger = LoggerFactory.getLogger(SchemaServiceImpl.class);
-
- private ListenerRegistry<SchemaServiceListener> listeners;
-
- private BundleContext context;
- private BundleScanner scanner = new BundleScanner();
-
- private BundleTracker<ImmutableSet<Registration<URL>>> bundleTracker;
-
- private final URLSchemaContextResolver contextResolver = new URLSchemaContextResolver();
-
- private ServiceTracker<SchemaServiceListener, SchemaServiceListener> listenerTracker;
-
- private boolean starting = true;
-
- public ListenerRegistry<SchemaServiceListener> getListeners() {
- return listeners;
- }
-
- public void setListeners(ListenerRegistry<SchemaServiceListener> listeners) {
- this.listeners = listeners;
- }
-
- public BundleContext getContext() {
- return context;
- }
-
- public void setContext(BundleContext context) {
- this.context = context;
- }
-
- public void start() {
- checkState(context != null);
- if (listeners == null) {
- listeners = new ListenerRegistry<>();
- }
-
- listenerTracker = new ServiceTracker<>(context, SchemaServiceListener.class, SchemaServiceImpl.this);
- bundleTracker = new BundleTracker<ImmutableSet<Registration<URL>>>(context, BundleEvent.RESOLVED
- | BundleEvent.UNRESOLVED, scanner);
- bundleTracker.open();
- listenerTracker.open();
- starting = false;
- tryToUpdateSchemaContext();
- }
-
- @Override
- public SchemaContext getSchemaContext() {
- return getGlobalContext();
- }
-
- public SchemaContext getGlobalContext() {
- return contextResolver.getSchemaContext().orNull();
- }
-
- @Override
- public void addModule(Module module) {
- throw new UnsupportedOperationException();
- }
-
- @Override
- public SchemaContext getSessionContext() {
- throw new UnsupportedOperationException();
- }
-
- @Override
- public void removeModule(Module module) {
- throw new UnsupportedOperationException();
- }
-
- @Override
- public ListenerRegistration<SchemaServiceListener> registerSchemaServiceListener(SchemaServiceListener listener) {
- return listeners.register(listener);
- }
-
- @Override
- public void close() throws Exception {
- if (bundleTracker != null) {
- bundleTracker.close();
- }
- if (listenerTracker != null) {
- listenerTracker.close();
- }
- // FIXME: Add listeners.close();
- }
-
-
- private void updateContext(SchemaContext snapshot) {
- Object[] services = listenerTracker.getServices();
- if (services != null) {
- for (Object rawListener : services) {
- SchemaServiceListener listener = (SchemaServiceListener) rawListener;
- try {
- listener.onGlobalContextUpdated(snapshot);
- } catch (Exception e) {
- logger.error("Exception occured during invoking listener", e);
- }
- }
- }
- for (ListenerRegistration<SchemaServiceListener> listener : listeners) {
- try {
- listener.getInstance().onGlobalContextUpdated(snapshot);
- } catch (Exception e) {
- logger.error("Exception occured during invoking listener", e);
- }
- }
- }
-
- private class BundleScanner implements BundleTrackerCustomizer<ImmutableSet<Registration<URL>>> {
- @Override
- public ImmutableSet<Registration<URL>> addingBundle(Bundle bundle, BundleEvent event) {
-
- if (bundle.getBundleId() == 0) {
- return ImmutableSet.of();
- }
-
- 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);
- }
- ImmutableSet<Registration<URL>> urls = builder.build();
- if(urls.isEmpty()) {
- return urls;
- }
- tryToUpdateSchemaContext();
- return urls;
- }
-
- @Override
- public void modifiedBundle(Bundle bundle, BundleEvent event, ImmutableSet<Registration<URL>> object) {
- logger.debug("Modified bundle {} {} {}", bundle, event, object);
- }
-
- /**
- * If removing YANG files makes yang store inconsistent, method
- * {@link #getYangStoreSnapshot()} will throw exception. There is no
- * rollback.
- */
-
- @Override
- public synchronized void removedBundle(Bundle bundle, BundleEvent event, ImmutableSet<Registration<URL>> urls) {
- for (Registration<URL> url : urls) {
- try {
- url.close();
- } catch (Exception e) {
- e.printStackTrace();
- }
- }
- tryToUpdateSchemaContext();
- }
- }
-
- @Override
- public SchemaServiceListener addingService(ServiceReference<SchemaServiceListener> reference) {
-
- SchemaServiceListener listener = context.getService(reference);
- SchemaContext _ctxContext = getGlobalContext();
- if (_ctxContext != null) {
- listener.onGlobalContextUpdated(_ctxContext);
- }
- return listener;
- }
-
- public synchronized void tryToUpdateSchemaContext() {
- if(starting ) {
- return;
- }
- Optional<SchemaContext> schema = contextResolver.tryToUpdateSchemaContext();
- if(schema.isPresent()) {
- updateContext(schema.get());
- }
- }
-
- @Override
- public void modifiedService(ServiceReference<SchemaServiceListener> reference, SchemaServiceListener service) {
- // NOOP
- }
-
- @Override
- public void removedService(ServiceReference<SchemaServiceListener> reference, SchemaServiceListener service) {
- context.ungetService(reference);
- }
-}
Code Review / controller.git / blobdiff