*/
package org.opendaylight.openflowplugin.applications.topology.manager;
-import com.google.common.base.Optional;
-import org.opendaylight.controller.md.sal.binding.api.DataBroker;
-import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
-import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
-import org.opendaylight.controller.sal.binding.api.NotificationProviderService;
+import static java.util.Objects.requireNonNull;
+
+import com.google.common.util.concurrent.Futures;
+import com.google.common.util.concurrent.ListenableFuture;
+import java.util.Optional;
+import java.util.concurrent.ExecutionException;
+import javax.annotation.PreDestroy;
+import javax.inject.Inject;
+import javax.inject.Singleton;
+import org.opendaylight.mdsal.binding.api.DataBroker;
+import org.opendaylight.mdsal.binding.api.NotificationService;
+import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
+import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonService;
+import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonServiceProvider;
+import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonServiceRegistration;
+import org.opendaylight.mdsal.singleton.common.api.ServiceGroupIdentifier;
import org.opendaylight.openflowplugin.common.txchain.TransactionChainManager;
import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NetworkTopology;
import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.TopologyId;
import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyBuilder;
import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyKey;
-import org.opendaylight.yangtools.concepts.ListenerRegistration;
+import org.opendaylight.yangtools.concepts.Registration;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
-import org.opendaylight.yangtools.yang.binding.NotificationListener;
+import org.osgi.service.component.annotations.Activate;
+import org.osgi.service.component.annotations.Component;
+import org.osgi.service.component.annotations.Deactivate;
+import org.osgi.service.component.annotations.Reference;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
-public class FlowCapableTopologyProvider implements AutoCloseable {
+@Singleton
+@Component(service = { })
+public final class FlowCapableTopologyProvider implements ClusterSingletonService, AutoCloseable {
private static final Logger LOG = LoggerFactory.getLogger(FlowCapableTopologyProvider.class);
- private static final String TOPOLOGY_PROVIDER = "topology-provider";
+ private static final String TOPOLOGY_PROVIDER = "ofp-topology-manager";
static final String TOPOLOGY_ID = "flow:1";
-
- private final DataBroker dataBroker;
- private final NotificationProviderService notificationService;
+ private final InstanceIdentifier<Topology> topologyPathIID;
+ private final TransactionChainManager transactionChainManager;
private final OperationProcessor processor;
- private TransactionChainManager transactionChainManager;
- private ListenerRegistration<NotificationListener> listenerRegistration;
- public FlowCapableTopologyProvider(DataBroker dataBroker, NotificationProviderService notificationService,
- OperationProcessor processor) {
- this.dataBroker = dataBroker;
- this.notificationService = notificationService;
- this.processor = processor;
- }
+ private Registration listenerRegistration;
+ private ClusterSingletonServiceRegistration singletonServiceRegistration;
- /**
- * Gets called on start of a bundle.
- */
- public void start() {
+ @Inject
+ @Activate
+ public FlowCapableTopologyProvider(@Reference final DataBroker dataBroker,
+ @Reference final NotificationService notificationService,
+ @Reference final ClusterSingletonServiceProvider clusterSingletonServiceProvider,
+ @Reference final OperationProcessor processor) {
+ this.processor = requireNonNull(processor);
final TopologyKey key = new TopologyKey(new TopologyId(TOPOLOGY_ID));
- final InstanceIdentifier<Topology> path = InstanceIdentifier
- .create(NetworkTopology.class)
- .child(Topology.class, key);
+ topologyPathIID = InstanceIdentifier.create(NetworkTopology.class).child(Topology.class, key);
- final FlowCapableTopologyExporter listener = new FlowCapableTopologyExporter(processor, path);
- this.listenerRegistration = notificationService.registerNotificationListener(listener);
- this.transactionChainManager = new TransactionChainManager(dataBroker, TOPOLOGY_PROVIDER);
- this.transactionChainManager.activateTransactionManager();
- this.transactionChainManager.initialSubmitWriteTransaction();
+ listenerRegistration = notificationService.registerCompositeListener(
+ new FlowCapableTopologyExporter(processor, topologyPathIID).toListener());
+ transactionChainManager = new TransactionChainManager(dataBroker, TOPOLOGY_PROVIDER);
+ transactionChainManager.activateTransactionManager();
+ transactionChainManager.initialSubmitWriteTransaction();
+ singletonServiceRegistration = clusterSingletonServiceProvider.registerClusterSingletonService(this);
+ LOG.info("Topology Manager service started.");
+ }
- if(!isFlowTopologyExist(path)){
- transactionChainManager.writeToTransaction(
- LogicalDatastoreType.OPERATIONAL,
- path,
- new TopologyBuilder().setKey(key).build(),
- true);
- transactionChainManager.submitTransaction();
+ @PreDestroy
+ @Deactivate
+ @Override
+ public void close() {
+ transactionChainManager.close();
+ if (listenerRegistration != null) {
+ LOG.info("Closing notification listener registration.");
+ listenerRegistration.close();
+ listenerRegistration = null;
}
- LOG.info("FlowCapableTopologyProvider started");
+ if (singletonServiceRegistration != null) {
+ LOG.info("Closing clustering singleton service registration.");
+ singletonServiceRegistration.close();
+ singletonServiceRegistration = null;
+ }
+ LOG.info("Topology Manager instance is stopped.");
}
@Override
- public void close() {
- LOG.info("FlowCapableTopologyProvider stopped.");
- this.transactionChainManager.close();
- if (this.listenerRegistration != null) {
- try {
- this.listenerRegistration.close();
- } catch (Exception e) {
- LOG.warn("Failed to close listener registration: {}", e.getMessage());
- LOG.debug("Failed to close listener registration.. ", e);
- }
- listenerRegistration = null;
+ public void instantiateServiceInstance() {
+ LOG.debug("Topology Manager instance is elected as an active instance.");
+ if (!isFlowTopologyExist(topologyPathIID)) {
+ transactionChainManager.writeToTransaction(LogicalDatastoreType.OPERATIONAL, topologyPathIID,
+ new TopologyBuilder().withKey(new TopologyKey(new TopologyId(TOPOLOGY_ID))).build(), true);
+ transactionChainManager.submitTransaction();
+ LOG.info("Topology node {} is successfully written to the operational datastore.", TOPOLOGY_ID);
}
}
+ @Override
+ public ListenableFuture<? extends Object> closeServiceInstance() {
+ return Futures.immediateFuture(null);
+ }
+
+ @Override
+ public ServiceGroupIdentifier getIdentifier() {
+ return ServiceGroupIdentifier.create(TOPOLOGY_PROVIDER);
+ }
+
private boolean isFlowTopologyExist(final InstanceIdentifier<Topology> path) {
try {
- Optional<Topology> ofTopology = this.transactionChainManager
- .readFromTransaction(LogicalDatastoreType.OPERATIONAL, path)
- .checkedGet();
- LOG.debug("OpenFlow topology exist in the operational data store at {}",path);
- if(ofTopology.isPresent()){
+ Optional<Topology> ofTopology = transactionChainManager
+ .readFromTransaction(LogicalDatastoreType.OPERATIONAL, path).get();
+ LOG.debug("OpenFlow topology exist in the operational data store at {}", path);
+ if (ofTopology.isPresent()) {
return true;
}
- } catch (ReadFailedException e) {
+ } catch (InterruptedException | ExecutionException e) {
LOG.warn("OpenFlow topology read operation failed!", e);
}
return false;