| /* |
| * 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.incubator.store.meter.impl; |
| |
| import com.google.common.collect.Collections2; |
| import com.google.common.collect.Maps; |
| import org.apache.felix.scr.annotations.Activate; |
| import org.apache.felix.scr.annotations.Deactivate; |
| import org.apache.felix.scr.annotations.Reference; |
| import org.apache.felix.scr.annotations.ReferenceCardinality; |
| import org.onosproject.cluster.ClusterService; |
| import org.onosproject.cluster.NodeId; |
| import org.onosproject.incubator.net.meter.DefaultMeter; |
| import org.onosproject.incubator.net.meter.Meter; |
| import org.onosproject.incubator.net.meter.MeterEvent; |
| import org.onosproject.incubator.net.meter.MeterFailReason; |
| import org.onosproject.incubator.net.meter.MeterId; |
| import org.onosproject.incubator.net.meter.MeterOperation; |
| import org.onosproject.incubator.net.meter.MeterState; |
| import org.onosproject.incubator.net.meter.MeterStore; |
| import org.onosproject.incubator.net.meter.MeterStoreDelegate; |
| import org.onosproject.incubator.net.meter.MeterStoreResult; |
| import org.onosproject.mastership.MastershipService; |
| 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.StorageException; |
| import org.onosproject.store.service.StorageService; |
| import org.onosproject.store.service.Versioned; |
| import org.slf4j.Logger; |
| |
| import java.util.Arrays; |
| import java.util.Collection; |
| import java.util.Map; |
| import java.util.concurrent.CompletableFuture; |
| |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| /** |
| * A distributed meter store implementation. Meters are stored consistently |
| * across the cluster. |
| */ |
| public class DistributedMeterStore extends AbstractStore<MeterEvent, MeterStoreDelegate> |
| implements MeterStore { |
| |
| private Logger log = getLogger(getClass()); |
| |
| private static final String METERSTORE = "onos-meter-store"; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| private StorageService storageService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| private MastershipService mastershipService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| private ClusterService clusterService; |
| |
| private ConsistentMap<MeterId, MeterData> meters; |
| private NodeId local; |
| |
| private MapEventListener mapListener = new InternalMapEventListener(); |
| |
| private Map<MeterId, CompletableFuture<MeterStoreResult>> futures = |
| Maps.newConcurrentMap(); |
| |
| @Activate |
| public void activate() { |
| |
| local = clusterService.getLocalNode().id(); |
| |
| |
| meters = storageService.<MeterId, MeterData>consistentMapBuilder() |
| .withName(METERSTORE) |
| .withSerializer(Serializer.using(Arrays.asList(KryoNamespaces.API), |
| MeterData.class)) |
| .build(); |
| |
| meters.addListener(mapListener); |
| |
| log.info("Started"); |
| } |
| |
| @Deactivate |
| public void deactivate() { |
| |
| meters.removeListener(mapListener); |
| log.info("Stopped"); |
| } |
| |
| |
| @Override |
| public CompletableFuture<MeterStoreResult> storeMeter(Meter meter) { |
| CompletableFuture<MeterStoreResult> future = new CompletableFuture<>(); |
| futures.put(meter.id(), future); |
| MeterData data = new MeterData(meter, null, local); |
| |
| try { |
| meters.put(meter.id(), data); |
| } catch (StorageException e) { |
| future.completeExceptionally(e); |
| } |
| |
| return future; |
| |
| } |
| |
| @Override |
| public CompletableFuture<MeterStoreResult> deleteMeter(Meter meter) { |
| CompletableFuture<MeterStoreResult> future = new CompletableFuture<>(); |
| futures.put(meter.id(), future); |
| |
| MeterData data = new MeterData(meter, null, local); |
| |
| // update the state of the meter. It will be pruned by observing |
| // that it has been removed from the dataplane. |
| try { |
| meters.put(meter.id(), data); |
| } catch (StorageException e) { |
| future.completeExceptionally(e); |
| } |
| |
| |
| return future; |
| } |
| |
| @Override |
| public CompletableFuture<MeterStoreResult> updateMeter(Meter meter) { |
| CompletableFuture<MeterStoreResult> future = new CompletableFuture<>(); |
| futures.put(meter.id(), future); |
| |
| MeterData data = new MeterData(meter, null, local); |
| try { |
| meters.put(meter.id(), data); |
| } catch (StorageException e) { |
| future.completeExceptionally(e); |
| } |
| return future; |
| } |
| |
| @Override |
| public void updateMeterState(Meter meter) { |
| meters.computeIfPresent(meter.id(), (id, v) -> { |
| DefaultMeter m = (DefaultMeter) v.meter(); |
| m.setState(meter.state()); |
| m.setProcessedPackets(meter.packetsSeen()); |
| m.setProcessedBytes(meter.bytesSeen()); |
| m.setLife(meter.life()); |
| // TODO: Prune if drops to zero. |
| m.setReferenceCount(meter.referenceCount()); |
| return new MeterData(m, null, v.origin()); |
| }); |
| } |
| |
| @Override |
| public Meter getMeter(MeterId meterId) { |
| MeterData data = Versioned.valueOrElse(meters.get(meterId), null); |
| return data == null ? null : data.meter(); |
| } |
| |
| @Override |
| public Collection<Meter> getAllMeters() { |
| return Collections2.transform(meters.asJavaMap().values(), |
| MeterData::meter); |
| } |
| |
| @Override |
| public void failedMeter(MeterOperation op, MeterFailReason reason) { |
| meters.computeIfPresent(op.meter().id(), (k, v) -> |
| new MeterData(v.meter(), reason, v.origin())); |
| } |
| |
| private class InternalMapEventListener implements MapEventListener<MeterId, MeterData> { |
| @Override |
| public void event(MapEvent<MeterId, MeterData> event) { |
| MeterData data = event.value().value(); |
| NodeId master = mastershipService.getMasterFor(data.meter().deviceId()); |
| switch (event.type()) { |
| case INSERT: |
| case UPDATE: |
| switch (data.meter().state()) { |
| case PENDING_ADD: |
| case PENDING_REMOVE: |
| if (!data.reason().isPresent() && local.equals(master)) { |
| notifyDelegate( |
| new MeterEvent(data.meter().state() == MeterState.PENDING_ADD ? |
| MeterEvent.Type.METER_ADD_REQ : MeterEvent.Type.METER_REM_REQ, |
| data.meter())); |
| } else if (data.reason().isPresent() && local.equals(data.origin())) { |
| MeterStoreResult msr = MeterStoreResult.fail(data.reason().get()); |
| //TODO: No future -> no friend |
| futures.get(data.meter().id()).complete(msr); |
| } |
| break; |
| case ADDED: |
| case REMOVED: |
| if (local.equals(data.origin())) { |
| futures.get(data.meter().id()).complete(MeterStoreResult.success()); |
| } |
| break; |
| default: |
| log.warn("Unknown meter state type {}", data.meter().state()); |
| } |
| break; |
| case REMOVE: |
| //Only happens at origin so we do not need to care. |
| break; |
| default: |
| log.warn("Unknown Map event type {}", event.type()); |
| } |
| |
| } |
| } |
| |
| |
| } |