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
9 package org.opendaylight.mdsal.dom.broker;
11 import static com.google.common.base.Preconditions.checkState;
12 import static java.util.Objects.requireNonNull;
14 import com.google.common.collect.MutableClassToInstanceMap;
15 import java.util.HashMap;
17 import java.util.Optional;
18 import org.opendaylight.mdsal.dom.api.DOMMountPoint;
19 import org.opendaylight.mdsal.dom.api.DOMMountPointListener;
20 import org.opendaylight.mdsal.dom.api.DOMMountPointService;
21 import org.opendaylight.mdsal.dom.api.DOMService;
22 import org.opendaylight.mdsal.dom.spi.SimpleDOMMountPoint;
23 import org.opendaylight.yangtools.concepts.AbstractObjectRegistration;
24 import org.opendaylight.yangtools.concepts.ListenerRegistration;
25 import org.opendaylight.yangtools.concepts.ObjectRegistration;
26 import org.opendaylight.yangtools.util.ListenerRegistry;
27 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
28 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
29 import org.slf4j.Logger;
30 import org.slf4j.LoggerFactory;
32 public class DOMMountPointServiceImpl implements DOMMountPointService {
33 private static final Logger LOG = LoggerFactory.getLogger(DOMMountPointServiceImpl.class);
35 private final Map<YangInstanceIdentifier, DOMMountPoint> mountPoints = new HashMap<>();
37 private final ListenerRegistry<DOMMountPointListener> listeners = ListenerRegistry.create();
40 public Optional<DOMMountPoint> getMountPoint(final YangInstanceIdentifier path) {
41 return Optional.ofNullable(mountPoints.get(path));
45 public DOMMountPointBuilder createMountPoint(final YangInstanceIdentifier path) {
46 checkState(!mountPoints.containsKey(path), "Mount point already exists");
47 return new DOMMountPointBuilderImpl(path);
51 public ListenerRegistration<DOMMountPointListener> registerProvisionListener(final DOMMountPointListener listener) {
52 return listeners.register(listener);
55 @SuppressWarnings("checkstyle:IllegalCatch")
56 private ObjectRegistration<DOMMountPoint> registerMountPoint(final SimpleDOMMountPoint mountPoint) {
57 final YangInstanceIdentifier mountPointId = mountPoint.getIdentifier();
58 synchronized (mountPoints) {
59 final DOMMountPoint prev = mountPoints.putIfAbsent(mountPointId, mountPoint);
60 checkState(prev == null, "Mount point %s already exists as %s", mountPointId, prev);
62 listeners.getRegistrations().forEach(listener -> {
64 listener.getInstance().onMountPointCreated(mountPointId);
65 } catch (final Exception ex) {
66 LOG.error("Listener {} failed on mount point {} created event", listener, mountPoint, ex);
70 return new AbstractObjectRegistration<DOMMountPoint>(mountPoint) {
72 protected void removeRegistration() {
73 unregisterMountPoint(getInstance().getIdentifier());
78 @SuppressWarnings("checkstyle:IllegalCatch")
79 private void unregisterMountPoint(final YangInstanceIdentifier mountPointId) {
80 synchronized (mountPoints) {
81 if (mountPoints.remove(mountPointId) == null) {
82 LOG.warn("Removing non-existent mount point {} at", mountPointId, new Throwable());
87 listeners.getRegistrations().forEach(listener -> {
89 listener.getInstance().onMountPointRemoved(mountPointId);
90 } catch (final Exception ex) {
91 LOG.error("Listener {} failed on mount point {} removed event", listener, mountPointId, ex);
96 private final class DOMMountPointBuilderImpl implements DOMMountPointBuilder {
98 private final MutableClassToInstanceMap<DOMService> services = MutableClassToInstanceMap.create();
99 private final YangInstanceIdentifier path;
100 private SchemaContext schemaContext;
102 private SimpleDOMMountPoint mountPoint;
104 DOMMountPointBuilderImpl(final YangInstanceIdentifier path) {
105 this.path = requireNonNull(path);
109 public <T extends DOMService> DOMMountPointBuilder addService(final Class<T> type, final T impl) {
110 services.putInstance(requireNonNull(type), requireNonNull(impl));
115 public DOMMountPointBuilder addInitialSchemaContext(final SchemaContext ctx) {
116 schemaContext = requireNonNull(ctx);
121 public ObjectRegistration<DOMMountPoint> register() {
122 checkState(mountPoint == null, "Mount point is already built.");
123 mountPoint = SimpleDOMMountPoint.create(path, services, schemaContext);
124 return registerMountPoint(mountPoint);