2 * Copyright (c) 2017, 2020 PANTHEON.tech, s.r.o. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.mdsal.dom.schema.osgi.impl;
10 import static java.util.Objects.requireNonNull;
12 import java.util.List;
13 import java.util.concurrent.CopyOnWriteArrayList;
14 import org.eclipse.jdt.annotation.NonNull;
15 import org.opendaylight.mdsal.dom.api.DOMSchemaService;
16 import org.opendaylight.mdsal.dom.schema.osgi.OSGiModuleInfoSnapshot;
17 import org.opendaylight.mdsal.dom.spi.AbstractDOMSchemaService;
18 import org.opendaylight.yangtools.concepts.ListenerRegistration;
19 import org.opendaylight.yangtools.yang.model.api.EffectiveModelContext;
20 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
21 import org.opendaylight.yangtools.yang.model.api.SchemaContextListener;
22 import org.osgi.service.component.ComponentFactory;
23 import org.osgi.service.component.ComponentInstance;
24 import org.osgi.service.component.annotations.Activate;
25 import org.osgi.service.component.annotations.Component;
26 import org.osgi.service.component.annotations.Deactivate;
27 import org.osgi.service.component.annotations.FieldOption;
28 import org.osgi.service.component.annotations.Reference;
29 import org.osgi.service.component.annotations.ReferenceCardinality;
30 import org.osgi.service.component.annotations.ReferencePolicy;
31 import org.osgi.service.component.annotations.ReferencePolicyOption;
32 import org.slf4j.Logger;
33 import org.slf4j.LoggerFactory;
36 * OSGi Service Registry-backed implementation of {@link DOMSchemaService}.
38 @Component(service = DOMSchemaService.class, immediate = true)
39 public final class OSGiDOMSchemaService extends AbstractDOMSchemaService {
40 private static final Logger LOG = LoggerFactory.getLogger(OSGiDOMSchemaService.class);
42 @Reference(target = "(component.factory=" + SchemaSchemaContextListenerImpl.FACTORY_NAME + ")")
43 ComponentFactory listenerFactory = null;
45 private final List<SchemaContextListener> listeners = new CopyOnWriteArrayList<>();
47 private volatile OSGiModuleInfoSnapshot currentContext;
50 public EffectiveModelContext getGlobalContext() {
51 return currentContext.getEffectiveModelContext();
55 public ListenerRegistration<SchemaContextListener> registerSchemaContextListener(
56 final SchemaContextListener listener) {
57 return registerListener(requireNonNull(listener));
60 @Reference(fieldOption = FieldOption.REPLACE)
61 void bindContext(final OSGiModuleInfoSnapshot newContext) {
62 final EffectiveModelContext ctx = newContext.getEffectiveModelContext();
63 LOG.trace("Updating context to {}", ctx);
64 currentContext = newContext;
65 listeners.forEach(listener -> notifyListener(ctx, listener));
68 @Reference(cardinality = ReferenceCardinality.MULTIPLE, policy = ReferencePolicy.DYNAMIC,
69 policyOption = ReferencePolicyOption.GREEDY)
70 void addListener(final SchemaContextListener listener) {
71 LOG.trace("Adding listener {}", listener);
72 listeners.add(listener);
73 listener.onGlobalContextUpdated(getGlobalContext());
76 void removeListener(final SchemaContextListener listener) {
77 LOG.trace("Removing listener {}", listener);
78 listeners.remove(listener);
82 @SuppressWarnings("static-method")
84 LOG.info("DOM Schema services activated");
88 @SuppressWarnings("static-method")
90 LOG.info("DOM Schema services deactivated");
93 private @NonNull ListenerRegistration<SchemaContextListener> registerListener(
94 final @NonNull SchemaContextListener listener) {
95 final ComponentInstance reg = listenerFactory.newInstance(SchemaSchemaContextListenerImpl.props(listener));
96 return new ListenerRegistration<>() {
98 public SchemaContextListener getInstance() {
103 public void close() {
109 @SuppressWarnings("checkstyle:illegalCatch")
110 private static void notifyListener(final SchemaContext context, final SchemaContextListener listener) {
112 listener.onGlobalContextUpdated(context);
113 } catch (RuntimeException e) {
114 LOG.warn("Failed to notify listener {}", listener, e);