Add distributed persistent store and manager for instance port
Change-Id: I9a4ba11a3e0fb494aedf9cb35c2e9a7a7bcbf5c7
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/DistributedInstancePortStore.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/DistributedInstancePortStore.java
new file mode 100644
index 0000000..f663980
--- /dev/null
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/DistributedInstancePortStore.java
@@ -0,0 +1,222 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.openstacknetworking.impl;
+
+import com.google.common.collect.ImmutableSet;
+import org.apache.felix.scr.annotations.Activate;
+import org.apache.felix.scr.annotations.Component;
+import org.apache.felix.scr.annotations.Deactivate;
+import org.apache.felix.scr.annotations.Reference;
+import org.apache.felix.scr.annotations.ReferenceCardinality;
+import org.apache.felix.scr.annotations.Service;
+import org.onlab.util.KryoNamespace;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.core.CoreService;
+import org.onosproject.openstacknetworking.api.InstancePort;
+import org.onosproject.openstacknetworking.api.InstancePortEvent;
+import org.onosproject.openstacknetworking.api.InstancePortStore;
+import org.onosproject.openstacknetworking.api.InstancePortStoreDelegate;
+import org.onosproject.store.AbstractStore;
+import org.onosproject.store.serializers.KryoNamespaces;
+import org.onosproject.store.service.ConsistentMap;
+import org.onosproject.store.service.MapEvent;
+import org.onosproject.store.service.MapEventListener;
+import org.onosproject.store.service.Serializer;
+import org.onosproject.store.service.StorageService;
+import org.onosproject.store.service.Versioned;
+import org.slf4j.Logger;
+
+import java.util.Set;
+import java.util.concurrent.ExecutorService;
+
+import static com.google.common.base.Preconditions.checkArgument;
+import static java.util.concurrent.Executors.newSingleThreadExecutor;
+import static org.onlab.util.Tools.groupedThreads;
+import static org.onosproject.openstacknetworking.api.Constants.OPENSTACK_NETWORKING_APP_ID;
+import static org.onosproject.openstacknetworking.api.InstancePort.State.ACTIVE;
+import static org.onosproject.openstacknetworking.api.InstancePort.State.INACTIVE;
+import static org.onosproject.openstacknetworking.api.InstancePort.State.MIGRATING;
+import static org.onosproject.openstacknetworking.api.InstancePortEvent.Type.OPENSTACK_INSTANCE_MIGRATION_ENDED;
+import static org.onosproject.openstacknetworking.api.InstancePortEvent.Type.OPENSTACK_INSTANCE_MIGRATION_STARTED;
+import static org.onosproject.openstacknetworking.api.InstancePortEvent.Type.OPENSTACK_INSTANCE_PORT_DETECTED;
+import static org.onosproject.openstacknetworking.api.InstancePortEvent.Type.OPENSTACK_INSTANCE_PORT_UPDATED;
+import static org.onosproject.openstacknetworking.api.InstancePortEvent.Type.OPENSTACK_INSTANCE_PORT_VANISHED;
+import static org.onosproject.openstacknetworking.api.InstancePortEvent.Type.OPENSTACK_INSTANCE_RESTARTED;
+import static org.onosproject.openstacknetworking.api.InstancePortEvent.Type.OPENSTACK_INSTANCE_TERMINATED;
+import static org.slf4j.LoggerFactory.getLogger;
+
+/**
+ * Manages the inventory of openstack instance port using a {@code ConsistentMap}.
+ */
+@Service
+@Component(immediate = true)
+public class DistributedInstancePortStore
+ extends AbstractStore<InstancePortEvent, InstancePortStoreDelegate>
+ implements InstancePortStore {
+
+ protected final Logger log = getLogger(getClass());
+
+ private static final String ERR_NOT_FOUND = " does not exist";
+ private static final String ERR_DUPLICATE = " already exists";
+
+ private static final KryoNamespace SERIALIZER_INSTANCE_PORT = KryoNamespace.newBuilder()
+ .register(KryoNamespaces.API)
+ .register(InstancePort.class)
+ .register(DefaultInstancePort.class)
+ .register(InstancePort.State.class)
+ .build();
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+ protected CoreService coreService;
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+ protected StorageService storageService;
+
+ private final ExecutorService eventExecutor = newSingleThreadExecutor(
+ groupedThreads(this.getClass().getSimpleName(), "event-handler", log));
+
+ private final MapEventListener<String, InstancePort>
+ instancePortMapListener = new InstancePortMapListener();
+
+ private ConsistentMap<String, InstancePort> instancePortStore;
+
+ @Activate
+ protected void activate() {
+ ApplicationId appId = coreService.registerApplication(OPENSTACK_NETWORKING_APP_ID);
+
+ instancePortStore = storageService.<String, InstancePort>consistentMapBuilder()
+ .withSerializer(Serializer.using(SERIALIZER_INSTANCE_PORT))
+ .withName("openstack-instanceport-store")
+ .withApplicationId(appId)
+ .build();
+ instancePortStore.addListener(instancePortMapListener);
+
+ log.info("Started");
+ }
+
+ @Deactivate
+ protected void deactivate() {
+ instancePortStore.removeListener(instancePortMapListener);
+ eventExecutor.shutdown();
+
+ log.info("Stopped");
+ }
+
+ @Override
+ public void createInstancePort(InstancePort port) {
+ instancePortStore.compute(port.portId(), (id, existing) -> {
+ final String error = port.portId() + ERR_DUPLICATE;
+ checkArgument(existing == null, error);
+ return port;
+ });
+ }
+
+ @Override
+ public void updateInstancePort(InstancePort port) {
+ instancePortStore.compute(port.portId(), (id, existing) -> {
+ final String error = port.portId() + ERR_NOT_FOUND;
+ checkArgument(existing != null, error);
+ return port;
+ });
+ }
+
+ @Override
+ public InstancePort removeInstancePort(String portId) {
+ Versioned<InstancePort> port = instancePortStore.remove(portId);
+ return port == null ? null : port.value();
+ }
+
+ @Override
+ public InstancePort instancePort(String portId) {
+ return instancePortStore.asJavaMap().get(portId);
+ }
+
+ @Override
+ public Set<InstancePort> instancePorts() {
+ return ImmutableSet.copyOf(instancePortStore.asJavaMap().values());
+ }
+
+ @Override
+ public void clear() {
+ instancePortStore.clear();
+ }
+
+ private class InstancePortMapListener implements MapEventListener<String, InstancePort> {
+
+ @Override
+ public void event(MapEvent<String, InstancePort> event) {
+ switch (event.type()) {
+ case INSERT:
+ log.debug("Instance port created");
+ eventExecutor.execute(() ->
+ notifyDelegate(new InstancePortEvent(
+ OPENSTACK_INSTANCE_PORT_DETECTED,
+ event.newValue().value()))
+ );
+ break;
+ case UPDATE:
+ log.debug("Instance port updated");
+ eventExecutor.execute(() -> {
+ notifyDelegate(new InstancePortEvent(
+ OPENSTACK_INSTANCE_PORT_UPDATED,
+ event.newValue().value()));
+ processInstancePortUpdate(event);
+ });
+ break;
+ case REMOVE:
+ log.debug("Instance port removed");
+ eventExecutor.execute(() ->
+ notifyDelegate(new InstancePortEvent(
+ OPENSTACK_INSTANCE_PORT_VANISHED,
+ event.oldValue().value()))
+ );
+ break;
+ default:
+ log.error("Unsupported instance port event type");
+ break;
+ }
+ }
+
+ private void processInstancePortUpdate(MapEvent<String, InstancePort> event) {
+ InstancePort.State oldState = event.oldValue().value().state();
+ InstancePort.State newState = event.newValue().value().state();
+
+ if (oldState == ACTIVE && newState == MIGRATING) {
+ notifyDelegate(new InstancePortEvent(
+ OPENSTACK_INSTANCE_MIGRATION_STARTED,
+ event.newValue().value()));
+ }
+
+ if (oldState == MIGRATING && newState == ACTIVE) {
+ notifyDelegate(new InstancePortEvent(
+ OPENSTACK_INSTANCE_MIGRATION_ENDED,
+ event.newValue().value()));
+ }
+
+ if (oldState == ACTIVE && newState == INACTIVE) {
+ notifyDelegate(new InstancePortEvent(
+ OPENSTACK_INSTANCE_TERMINATED,
+ event.newValue().value()));
+ }
+
+ if (oldState == INACTIVE && newState == ACTIVE) {
+ notifyDelegate(new InstancePortEvent(
+ OPENSTACK_INSTANCE_RESTARTED,
+ event.newValue().value()));
+ }
+ }
+ }
+}