2 * Copyright (c) 2014 Cisco Systems, Inc. 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.broker;
10 import static com.google.common.base.Preconditions.checkState;
11 import static java.util.Objects.requireNonNull;
13 import com.google.common.collect.MutableClassToInstanceMap;
14 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
15 import java.util.HashMap;
17 import java.util.Optional;
18 import javax.inject.Singleton;
19 import org.kohsuke.MetaInfServices;
20 import org.opendaylight.mdsal.dom.api.DOMMountPoint;
21 import org.opendaylight.mdsal.dom.api.DOMMountPointListener;
22 import org.opendaylight.mdsal.dom.api.DOMMountPointService;
23 import org.opendaylight.mdsal.dom.api.DOMService;
24 import org.opendaylight.mdsal.dom.spi.SimpleDOMMountPoint;
25 import org.opendaylight.yangtools.concepts.AbstractObjectRegistration;
26 import org.opendaylight.yangtools.concepts.ListenerRegistration;
27 import org.opendaylight.yangtools.concepts.ObjectRegistration;
28 import org.opendaylight.yangtools.util.ListenerRegistry;
29 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
30 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
31 import org.osgi.service.component.annotations.Activate;
32 import org.osgi.service.component.annotations.Component;
33 import org.osgi.service.component.annotations.Deactivate;
34 import org.slf4j.Logger;
35 import org.slf4j.LoggerFactory;
37 @Component(immediate = true)
40 public final class DOMMountPointServiceImpl implements DOMMountPointService {
41 private static final Logger LOG = LoggerFactory.getLogger(DOMMountPointServiceImpl.class);
43 private final Map<YangInstanceIdentifier, DOMMountPoint> mountPoints = new HashMap<>();
45 private final ListenerRegistry<DOMMountPointListener> listeners = ListenerRegistry.create();
48 public Optional<DOMMountPoint> getMountPoint(final YangInstanceIdentifier path) {
49 return Optional.ofNullable(mountPoints.get(path));
53 public DOMMountPointBuilder createMountPoint(final YangInstanceIdentifier path) {
54 checkState(!mountPoints.containsKey(path), "Mount point already exists");
55 return new DOMMountPointBuilderImpl(path);
59 public ListenerRegistration<DOMMountPointListener> registerProvisionListener(final DOMMountPointListener listener) {
60 return listeners.register(listener);
64 @SuppressWarnings("static-method")
66 LOG.info("DOMMountPointService activated");
70 @SuppressWarnings("static-method")
72 LOG.info("DOMMountPointService deactivated");
75 @SuppressFBWarnings(value = "UPM_UNCALLED_PRIVATE_METHOD",
76 justification = "https://github.com/spotbugs/spotbugs/issues/811")
77 @SuppressWarnings("checkstyle:IllegalCatch")
78 private ObjectRegistration<DOMMountPoint> registerMountPoint(final SimpleDOMMountPoint mountPoint) {
79 final YangInstanceIdentifier mountPointId = mountPoint.getIdentifier();
80 synchronized (mountPoints) {
81 final DOMMountPoint prev = mountPoints.putIfAbsent(mountPointId, mountPoint);
82 checkState(prev == null, "Mount point %s already exists as %s", mountPointId, prev);
84 listeners.streamListeners().forEach(listener -> {
86 listener.onMountPointCreated(mountPointId);
87 } catch (final Exception ex) {
88 LOG.error("Listener {} failed on mount point {} created event", listener, mountPoint, ex);
92 return new AbstractObjectRegistration<>(mountPoint) {
94 protected void removeRegistration() {
95 unregisterMountPoint(getInstance().getIdentifier());
100 @SuppressFBWarnings(value = "UPM_UNCALLED_PRIVATE_METHOD",
101 justification = "https://github.com/spotbugs/spotbugs/issues/811")
102 @SuppressWarnings("checkstyle:IllegalCatch")
103 private void unregisterMountPoint(final YangInstanceIdentifier mountPointId) {
104 synchronized (mountPoints) {
105 if (mountPoints.remove(mountPointId) == null) {
106 LOG.warn("Removing non-existent mount point {} at", mountPointId, new Throwable());
111 listeners.streamListeners().forEach(listener -> {
113 listener.onMountPointRemoved(mountPointId);
114 } catch (final Exception ex) {
115 LOG.error("Listener {} failed on mount point {} removed event", listener, mountPointId, ex);
120 private final class DOMMountPointBuilderImpl implements DOMMountPointBuilder {
122 private final MutableClassToInstanceMap<DOMService> services = MutableClassToInstanceMap.create();
123 private final YangInstanceIdentifier path;
124 private SchemaContext schemaContext;
126 private SimpleDOMMountPoint mountPoint;
128 DOMMountPointBuilderImpl(final YangInstanceIdentifier path) {
129 this.path = requireNonNull(path);
133 public <T extends DOMService> DOMMountPointBuilder addService(final Class<T> type, final T impl) {
134 services.putInstance(requireNonNull(type), requireNonNull(impl));
139 public DOMMountPointBuilder addInitialSchemaContext(final SchemaContext ctx) {
140 schemaContext = requireNonNull(ctx);
145 public ObjectRegistration<DOMMountPoint> register() {
146 checkState(mountPoint == null, "Mount point is already built.");
147 mountPoint = SimpleDOMMountPoint.create(path, services, schemaContext);
148 return registerMountPoint(mountPoint);