2 * Copyright (c) 2014, 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
9 package org.opendaylight.ovsdb.openstack.netvirt.providers;
11 import org.opendaylight.ovsdb.openstack.netvirt.api.Constants;
13 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
14 import org.opendaylight.controller.md.sal.common.api.clustering.Entity;
15 import org.opendaylight.controller.md.sal.common.api.clustering.CandidateAlreadyRegisteredException;
16 import org.opendaylight.controller.md.sal.common.api.clustering.EntityOwnershipCandidateRegistration;
17 import org.opendaylight.controller.md.sal.common.api.clustering.EntityOwnershipChange;
18 import org.opendaylight.controller.md.sal.common.api.clustering.EntityOwnershipListener;
19 import org.opendaylight.controller.md.sal.common.api.clustering.EntityOwnershipListenerRegistration;
20 import org.opendaylight.controller.md.sal.common.api.clustering.EntityOwnershipService;
21 import org.opendaylight.controller.sal.binding.api.BindingAwareBroker.ProviderContext;
22 import org.opendaylight.controller.sal.binding.api.BindingAwareProvider;
23 import org.opendaylight.ovsdb.openstack.netvirt.providers.openflow13.Service;
24 import org.opendaylight.yang.gen.v1.urn.opendaylight.table.types.rev131026.TableId;
25 import org.osgi.framework.BundleContext;
26 import org.slf4j.Logger;
27 import org.slf4j.LoggerFactory;
29 import java.util.concurrent.atomic.AtomicBoolean;
32 * @author Sam Hague (shague@redhat.com)
34 public class NetvirtProvidersProvider implements BindingAwareProvider, AutoCloseable {
35 private static final Logger LOG = LoggerFactory.getLogger(NetvirtProvidersProvider.class);
37 private BundleContext bundleContext = null;
38 private static DataBroker dataBroker = null;
39 private ConfigActivator activator;
40 private static ProviderContext providerContext = null;
41 private static EntityOwnershipService entityOwnershipService;
42 private ProviderEntityListener providerEntityListener = null;
43 private static AtomicBoolean hasProviderEntityOwnership = new AtomicBoolean(false);
44 private static short tableOffset;
45 private NetvirtProvidersConfigImpl netvirtProvidersConfig = null;
47 public NetvirtProvidersProvider(BundleContext bundleContext, EntityOwnershipService eos, short tableOffset) {
48 LOG.info("NetvirtProvidersProvider: bundleContext: {}", bundleContext);
49 this.bundleContext = bundleContext;
50 entityOwnershipService = eos;
51 setTableOffset(tableOffset);
54 public static DataBroker getDataBroker() {
58 public static ProviderContext getProviderContext() {
59 return providerContext;
62 public static boolean isMasterProviderInstance() {
63 return hasProviderEntityOwnership.get();
66 public static void setTableOffset(short tableOffset) {
68 new TableId((short) (tableOffset + Service.L2_FORWARDING.getTable()));
69 } catch (IllegalArgumentException e) {
70 LOG.warn("Invalid table offset: {}", tableOffset, e);
74 LOG.info("setTableOffset: changing from {} to {}",
75 NetvirtProvidersProvider.tableOffset, tableOffset);
76 NetvirtProvidersProvider.tableOffset = tableOffset;
79 public static short getTableOffset() {
84 public void close() throws Exception {
85 LOG.info("NetvirtProvidersProvider closed");
86 activator.stop(bundleContext);
87 providerEntityListener.close();
91 public void onSessionInitiated(ProviderContext providerContextRef) {
92 dataBroker = providerContextRef.getSALService(DataBroker.class);
93 providerContext = providerContextRef;
94 LOG.info("NetvirtProvidersProvider: onSessionInitiated dataBroker: {}", dataBroker);
95 providerEntityListener = new ProviderEntityListener(this, entityOwnershipService);
96 this.activator = new ConfigActivator(providerContextRef);
98 activator.start(bundleContext);
99 } catch (Exception e) {
100 LOG.warn("Failed to start Netvirt: ", e);
104 private void handleOwnershipChange(EntityOwnershipChange ownershipChange) {
105 if (ownershipChange.isOwner()) {
106 LOG.info("*This* instance of OVSDB netvirt provider is a MASTER instance");
107 hasProviderEntityOwnership.set(true);
109 LOG.info("*This* instance of OVSDB netvirt provider is a SLAVE instance");
110 hasProviderEntityOwnership.set(false);
114 private class ProviderEntityListener implements EntityOwnershipListener {
115 private NetvirtProvidersProvider provider;
116 private EntityOwnershipListenerRegistration listenerRegistration;
117 private EntityOwnershipCandidateRegistration candidateRegistration;
119 ProviderEntityListener(NetvirtProvidersProvider provider,
120 EntityOwnershipService entityOwnershipService) {
121 this.provider = provider;
122 this.listenerRegistration =
123 entityOwnershipService.registerListener(Constants.NETVIRT_OWNER_ENTITY_TYPE, this);
125 //register instance entity to get the ownership of the netvirt provider
126 Entity instanceEntity = new Entity(
127 Constants.NETVIRT_OWNER_ENTITY_TYPE, Constants.NETVIRT_OWNER_ENTITY_TYPE);
129 this.candidateRegistration = entityOwnershipService.registerCandidate(instanceEntity);
130 } catch (CandidateAlreadyRegisteredException e) {
131 LOG.warn("OVSDB Netvirt Provider instance entity {} was already "
132 + "registered for ownership", instanceEntity, e);
136 public void close() {
137 this.listenerRegistration.close();
138 this.candidateRegistration.close();
142 public void ownershipChanged(EntityOwnershipChange ownershipChange) {
143 provider.handleOwnershipChange(ownershipChange);