| /* |
| * 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.net.meter.impl; |
| |
| 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.TriConsumer; |
| import org.onosproject.net.meter.DefaultMeter; |
| import org.onosproject.net.meter.Meter; |
| import org.onosproject.net.meter.MeterEvent; |
| import org.onosproject.net.meter.MeterFailReason; |
| import org.onosproject.net.meter.MeterId; |
| import org.onosproject.net.meter.MeterListener; |
| import org.onosproject.net.meter.MeterOperation; |
| import org.onosproject.net.meter.MeterProvider; |
| import org.onosproject.net.meter.MeterProviderRegistry; |
| import org.onosproject.net.meter.MeterProviderService; |
| import org.onosproject.net.meter.MeterService; |
| import org.onosproject.net.meter.MeterState; |
| import org.onosproject.net.meter.MeterStore; |
| import org.onosproject.net.meter.MeterStoreDelegate; |
| import org.onosproject.net.meter.MeterStoreResult; |
| import org.onosproject.net.DeviceId; |
| import org.onosproject.net.provider.AbstractListenerProviderRegistry; |
| import org.onosproject.net.provider.AbstractProviderService; |
| import org.onosproject.store.service.AtomicCounter; |
| import org.onosproject.store.service.StorageService; |
| import org.slf4j.Logger; |
| |
| import java.util.Collection; |
| |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| |
| /** |
| * Provides implementation of the meter service APIs. |
| */ |
| @Component(immediate = true, enabled = true) |
| @Service |
| public class MeterManager extends AbstractListenerProviderRegistry<MeterEvent, MeterListener, |
| MeterProvider, MeterProviderService> |
| implements MeterService, MeterProviderRegistry { |
| |
| private final String meterIdentifier = "meter-id-counter"; |
| private final Logger log = getLogger(getClass()); |
| private final MeterStoreDelegate delegate = new InternalMeterStoreDelegate(); |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected StorageService storageService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected MeterStore store; |
| |
| private AtomicCounter meterIdCounter; |
| |
| private TriConsumer<MeterOperation, MeterStoreResult, Throwable> onComplete; |
| |
| @Activate |
| public void activate() { |
| meterIdCounter = storageService.atomicCounterBuilder() |
| .withName(meterIdentifier) |
| .build(); |
| |
| store.setDelegate(delegate); |
| |
| onComplete = (op, result, error) -> |
| { |
| op.context().ifPresent(c -> { |
| if (error != null) { |
| c.onError(op.meter(), MeterFailReason.UNKNOWN); |
| } else { |
| if (result.reason().isPresent()) { |
| c.onError(op.meter(), result.reason().get()); |
| } else { |
| c.onSuccess(op.meter()); |
| } |
| } |
| }); |
| |
| }; |
| log.info("Started"); |
| } |
| |
| @Deactivate |
| public void deactivate() { |
| store.unsetDelegate(delegate); |
| log.info("Stopped"); |
| } |
| |
| @Override |
| protected MeterProviderService createProviderService(MeterProvider provider) { |
| return new InternalMeterProviderService(provider); |
| } |
| |
| @Override |
| public void addMeter(MeterOperation op) { |
| DefaultMeter m = (DefaultMeter) op.meter(); |
| m.setState(MeterState.PENDING_ADD); |
| store.storeMeter(m).whenComplete((result, error) -> |
| onComplete.accept(op, result, error)); |
| } |
| |
| @Override |
| public void updateMeter(MeterOperation op) { |
| DefaultMeter m = (DefaultMeter) op.meter(); |
| m.setState(MeterState.PENDING_ADD); |
| store.updateMeter(m).whenComplete((result, error) -> |
| onComplete.accept(op, result, error)); |
| } |
| |
| @Override |
| public void removeMeter(MeterOperation op) { |
| DefaultMeter m = (DefaultMeter) op.meter(); |
| m.setState(MeterState.PENDING_REMOVE); |
| store.deleteMeter(m).whenComplete((result, error) -> |
| onComplete.accept(op, result, error)); |
| } |
| |
| @Override |
| public Meter getMeter(MeterId id) { |
| return store.getMeter(id); |
| } |
| |
| @Override |
| public Collection<Meter> getAllMeters() { |
| return store.getAllMeters(); |
| } |
| |
| @Override |
| public MeterId allocateMeterId() { |
| // FIXME: This will break one day. |
| return MeterId.meterId((int) meterIdCounter.getAndIncrement()); |
| } |
| |
| private class InternalMeterProviderService |
| extends AbstractProviderService<MeterProvider> |
| implements MeterProviderService { |
| |
| /** |
| * Creates a provider service on behalf of the specified provider. |
| * |
| * @param provider provider to which this service is being issued |
| */ |
| protected InternalMeterProviderService(MeterProvider provider) { |
| super(provider); |
| } |
| |
| @Override |
| public void meterOperationFailed(MeterOperation operation, |
| MeterFailReason reason) { |
| store.failedMeter(operation, reason); |
| } |
| |
| @Override |
| public void pushMeterMetrics(DeviceId deviceId, Collection<Meter> meterEntries) { |
| meterEntries.forEach(m -> store.updateMeterState(m)); |
| } |
| } |
| |
| private class InternalMeterStoreDelegate implements MeterStoreDelegate { |
| |
| @Override |
| public void notify(MeterEvent event) { |
| DeviceId deviceId = event.subject().deviceId(); |
| MeterProvider p = getProvider(event.subject().deviceId()); |
| switch (event.type()) { |
| case METER_ADD_REQ: |
| p.performMeterOperation(deviceId, new MeterOperation(event.subject(), |
| MeterOperation.Type.ADD, |
| null)); |
| break; |
| case METER_REM_REQ: |
| p.performMeterOperation(deviceId, new MeterOperation(event.subject(), |
| MeterOperation.Type.REMOVE, |
| null)); |
| break; |
| default: |
| log.warn("Unknown meter event {}", event.type()); |
| } |
| |
| } |
| } |
| |
| } |