2 * Copyright (c) 2015 Red Hat, 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.ovsdb.openstack.netvirt.impl;
10 import com.google.common.collect.Lists;
11 import com.google.common.collect.Maps;
12 import java.util.List;
14 import org.opendaylight.ovsdb.openstack.netvirt.AbstractEvent;
15 import org.opendaylight.ovsdb.openstack.netvirt.AbstractHandler;
16 import org.opendaylight.ovsdb.openstack.netvirt.NodeCacheManagerEvent;
17 import org.opendaylight.ovsdb.openstack.netvirt.api.Action;
18 import org.opendaylight.ovsdb.openstack.netvirt.api.NodeCacheListener;
19 import org.opendaylight.ovsdb.openstack.netvirt.api.NodeCacheManager;
20 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
21 import org.osgi.framework.ServiceReference;
22 import org.slf4j.Logger;
23 import org.slf4j.LoggerFactory;
26 * @author Flavio Fernandes (ffernand@redhat.com)
27 * @author Sam Hague (shague@redhat.com)
29 public class NodeCacheManagerImpl extends AbstractHandler implements NodeCacheManager {
31 private static final Logger logger = LoggerFactory.getLogger(NodeCacheManagerImpl.class);
32 private List<Node> nodeCache = Lists.newArrayList();
33 private Map<Long, NodeCacheListener> handlers = Maps.newHashMap();
36 logger.info(">>>>> init {}", this.getClass());
40 public void nodeAdded(Node node) {
41 logger.debug("nodeAdded: Node added: {}", node);
42 enqueueEvent(new NodeCacheManagerEvent(node, Action.ADD));
45 public void nodeRemoved(Node node) {
46 logger.debug("nodeRemoved: Node removed: {}", node);
47 enqueueEvent(new NodeCacheManagerEvent(node, Action.DELETE));
50 public List<Node> getNodes() {
54 private void _processNodeAdded(Node node) {
56 for (NodeCacheListener handler : handlers.values()) {
58 handler.notifyNode(node, Action.ADD);
59 } catch (Exception e) {
60 logger.error("Failed notifying node add event", e);
64 private void _processNodeRemoved(Node node) {
65 nodeCache.remove(node);
66 for (NodeCacheListener handler : handlers.values()) {
68 handler.notifyNode(node, Action.DELETE);
69 } catch (Exception e) {
70 logger.error("Failed notifying node remove event", e);
78 * @param abstractEvent the {@link org.opendaylight.ovsdb.openstack.netvirt.AbstractEvent} event to be handled.
79 * @see org.opendaylight.ovsdb.openstack.netvirt.api.EventDispatcher
82 public void processEvent(AbstractEvent abstractEvent) {
83 if (!(abstractEvent instanceof NodeCacheManagerEvent)) {
84 logger.error("Unable to process abstract event " + abstractEvent);
87 NodeCacheManagerEvent ev = (NodeCacheManagerEvent) abstractEvent;
88 logger.debug(">>>>> dequeue: {}", ev);
89 switch (ev.getAction()) {
91 _processNodeAdded(ev.getNode());
94 _processNodeRemoved(ev.getNode());
99 logger.warn("Unable to process event action " + ev.getAction());
104 public void cacheListenerAdded(final ServiceReference ref, NodeCacheListener handler){
105 Long pid = (Long) ref.getProperty(org.osgi.framework.Constants.SERVICE_ID);
106 handlers.put(pid, handler);
107 logger.info("Node cache listener registered, pid {} {}", pid, handler.getClass().getName());
110 public void cacheListenerRemoved(final ServiceReference ref){
111 Long pid = (Long) ref.getProperty(org.osgi.framework.Constants.SERVICE_ID);
112 handlers.remove(pid);
113 logger.debug("Node cache listener unregistered, pid {}", pid);