2 * Copyright (c) 2017, 2018 Ericsson India Global Services Pvt Ltd. 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.genius.interfacemanager.listeners;
11 import java.util.Collections;
12 import java.util.List;
13 import java.util.Optional;
14 import javax.inject.Inject;
15 import javax.inject.Singleton;
17 import org.apache.aries.blueprint.annotation.service.Reference;
18 import org.opendaylight.genius.mdsalutil.cache.InstanceIdDataObjectCache;
19 import org.opendaylight.infrautils.caches.CacheProvider;
20 import org.opendaylight.mdsal.binding.api.DataBroker;
21 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
22 import org.opendaylight.mdsal.common.api.ReadFailedException;
23 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.meta.rev160406.InterfaceChildInfo;
24 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.meta.rev160406._interface.child.info.InterfaceParentEntry;
25 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.meta.rev160406._interface.child.info.InterfaceParentEntryKey;
26 import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.meta.rev160406._interface.child.info._interface.parent.entry.InterfaceChildEntry;
27 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
28 import org.slf4j.Logger;
29 import org.slf4j.LoggerFactory;
32 public class InterfaceChildCache {
33 private static final Logger LOG = LoggerFactory.getLogger(InterfaceChildCache.class);
35 private final InstanceIdDataObjectCache<InterfaceParentEntry> dataObjectCache;
38 public InterfaceChildCache(@Reference final DataBroker dataBroker, final @Reference CacheProvider cacheProvider) {
39 dataObjectCache = new InstanceIdDataObjectCache<>(InterfaceParentEntry.class,
40 dataBroker, LogicalDatastoreType.CONFIGURATION,
41 InstanceIdentifier.create(InterfaceChildInfo.class).child(InterfaceParentEntry.class),
45 public Optional<List<InterfaceChildEntry>> getInterfaceChildEntries(String parentInterfaceName) {
47 Optional<InterfaceParentEntry> interfaceParentEntry = dataObjectCache.get(
48 getInterfaceParentEntryIdentifier(parentInterfaceName));
49 if (interfaceParentEntry.isPresent()) {
50 List<InterfaceChildEntry> interfaceChildEntries = interfaceParentEntry.get()
51 .getInterfaceChildEntry() != null ? interfaceParentEntry.get()
52 .getInterfaceChildEntry() : Collections.emptyList();
53 return Optional.of(Collections.unmodifiableList(interfaceChildEntries));
55 } catch (ReadFailedException ex) {
56 LOG.error("ReadFailedException exception", ex);
58 return Optional.empty();
61 private InstanceIdentifier<InterfaceParentEntry> getInterfaceParentEntryIdentifier(String parentInterfaceName) {
62 InstanceIdentifier.InstanceIdentifierBuilder<InterfaceParentEntry> intfIdBuilder =
63 InstanceIdentifier.builder(InterfaceChildInfo.class)
64 .child(InterfaceParentEntry.class, new InterfaceParentEntryKey(parentInterfaceName));
65 return intfIdBuilder.build();