| /* |
| * Copyright 2015 Open Networking Laboratory |
| * |
| * 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.store.intent.impl; |
| |
| import com.google.common.collect.ImmutableList; |
| 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.cluster.ClusterService; |
| import org.onosproject.net.intent.BatchWrite; |
| import org.onosproject.net.intent.Intent; |
| import org.onosproject.net.intent.IntentEvent; |
| import org.onosproject.net.intent.IntentId; |
| import org.onosproject.net.intent.IntentState; |
| import org.onosproject.net.intent.IntentStore; |
| import org.onosproject.net.intent.IntentStoreDelegate; |
| import org.onosproject.store.AbstractStore; |
| import org.onosproject.store.cluster.messaging.ClusterCommunicationService; |
| import org.onosproject.store.impl.EventuallyConsistentMap; |
| import org.onosproject.store.impl.EventuallyConsistentMapEvent; |
| import org.onosproject.store.impl.EventuallyConsistentMapImpl; |
| import org.onosproject.store.impl.EventuallyConsistentMapListener; |
| import org.onosproject.store.impl.WallclockClockManager; |
| import org.onosproject.store.serializers.KryoNamespaces; |
| import org.slf4j.Logger; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import static com.google.common.base.Preconditions.checkArgument; |
| import static org.onosproject.net.intent.IntentState.INSTALL_REQ; |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| /** |
| * Manages inventory of Intents in a distributed data store that uses optimistic |
| * replication and gossip based techniques. |
| */ |
| @Component(immediate = true, enabled = true) |
| @Service |
| public class GossipIntentStore |
| extends AbstractStore<IntentEvent, IntentStoreDelegate> |
| implements IntentStore { |
| |
| private final Logger log = getLogger(getClass()); |
| |
| private EventuallyConsistentMap<IntentId, Intent> intents; |
| |
| private EventuallyConsistentMap<IntentId, IntentState> intentStates; |
| |
| private EventuallyConsistentMap<IntentId, List<Intent>> installables; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected ClusterCommunicationService clusterCommunicator; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected ClusterService clusterService; |
| |
| @Activate |
| public void activate() { |
| KryoNamespace.Builder intentSerializer = KryoNamespace.newBuilder() |
| .register(KryoNamespaces.API); |
| intents = new EventuallyConsistentMapImpl<>("intents", clusterService, |
| clusterCommunicator, |
| intentSerializer, |
| new WallclockClockManager<>()); |
| |
| intentStates = new EventuallyConsistentMapImpl<>("intent-states", |
| clusterService, |
| clusterCommunicator, |
| intentSerializer, |
| new WallclockClockManager<>()); |
| |
| installables = new EventuallyConsistentMapImpl<>("intent-installables", |
| clusterService, |
| clusterCommunicator, |
| intentSerializer, |
| new WallclockClockManager<>()); |
| |
| intentStates.addListener(new InternalIntentStatesListener()); |
| |
| log.info("Started"); |
| } |
| |
| @Deactivate |
| public void deactivate() { |
| intents.destroy(); |
| intentStates.destroy(); |
| installables.destroy(); |
| |
| log.info("Stopped"); |
| } |
| |
| @Override |
| public long getIntentCount() { |
| return intents.size(); |
| } |
| |
| @Override |
| public Iterable<Intent> getIntents() { |
| // TODO don't actually need to copy intents, they are immutable |
| return ImmutableList.copyOf(intents.values()); |
| } |
| |
| @Override |
| public Intent getIntent(IntentId intentId) { |
| return intents.get(intentId); |
| } |
| |
| @Override |
| public IntentState getIntentState(IntentId intentId) { |
| return intentStates.get(intentId); |
| } |
| |
| @Override |
| public List<Intent> getInstallableIntents(IntentId intentId) { |
| return installables.get(intentId); |
| } |
| |
| @Override |
| public List<BatchWrite.Operation> batchWrite(BatchWrite batch) { |
| |
| List<BatchWrite.Operation> failed = new ArrayList<>(); |
| |
| for (BatchWrite.Operation op : batch.operations()) { |
| switch (op.type()) { |
| case CREATE_INTENT: |
| checkArgument(op.args().size() == 1, |
| "CREATE_INTENT takes 1 argument. %s", op); |
| Intent intent = op.arg(0); |
| |
| intents.put(intent.id(), intent); |
| intentStates.put(intent.id(), INSTALL_REQ); |
| |
| break; |
| case REMOVE_INTENT: |
| checkArgument(op.args().size() == 1, |
| "REMOVE_INTENT takes 1 argument. %s", op); |
| IntentId intentId = op.arg(0); |
| |
| intents.remove(intentId); |
| intentStates.remove(intentId); |
| installables.remove(intentId); |
| |
| break; |
| case SET_STATE: |
| checkArgument(op.args().size() == 2, |
| "SET_STATE takes 2 arguments. %s", op); |
| intent = op.arg(0); |
| IntentState newState = op.arg(1); |
| |
| intentStates.put(intent.id(), newState); |
| |
| break; |
| case SET_INSTALLABLE: |
| checkArgument(op.args().size() == 2, |
| "SET_INSTALLABLE takes 2 arguments. %s", op); |
| intentId = op.arg(0); |
| List<Intent> installableIntents = op.arg(1); |
| |
| installables.put(intentId, installableIntents); |
| |
| break; |
| case REMOVE_INSTALLED: |
| checkArgument(op.args().size() == 1, |
| "REMOVE_INSTALLED takes 1 argument. %s", op); |
| intentId = op.arg(0); |
| installables.remove(intentId); |
| break; |
| default: |
| log.warn("Unknown Operation encountered: {}", op); |
| failed.add(op); |
| break; |
| } |
| } |
| |
| return failed; |
| } |
| |
| private void notifyDelegateIfNotNull(IntentEvent event) { |
| if (event != null) { |
| notifyDelegate(event); |
| } |
| } |
| |
| private final class InternalIntentStatesListener implements |
| EventuallyConsistentMapListener<IntentId, IntentState> { |
| @Override |
| public void event( |
| EventuallyConsistentMapEvent<IntentId, IntentState> event) { |
| if (event.type() == EventuallyConsistentMapEvent.Type.PUT) { |
| IntentEvent externalEvent; |
| Intent intent = intents.get(event.key()); // TODO OK if this is null? |
| |
| try { |
| externalEvent = IntentEvent.getEvent(event.value(), intent); |
| } catch (IllegalArgumentException e) { |
| externalEvent = null; |
| } |
| |
| notifyDelegateIfNotNull(externalEvent); |
| } |
| } |
| } |
| |
| } |
| |