| /* |
| * Copyright 2017-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.mapping.impl; |
| |
| import com.google.common.collect.FluentIterable; |
| import com.google.common.collect.Lists; |
| import com.google.common.collect.Maps; |
| 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.Modified; |
| import org.apache.felix.scr.annotations.Service; |
| import org.onosproject.mapping.DefaultMappingEntry; |
| import org.onosproject.mapping.Mapping; |
| import org.onosproject.mapping.MappingEntry; |
| import org.onosproject.mapping.MappingEntry.MappingEntryState; |
| import org.onosproject.mapping.MappingEvent; |
| import org.onosproject.mapping.MappingId; |
| import org.onosproject.mapping.MappingStore; |
| import org.onosproject.mapping.MappingStoreDelegate; |
| import org.onosproject.mapping.StoredMappingEntry; |
| import org.onosproject.net.DeviceId; |
| import org.onosproject.store.AbstractStore; |
| import org.osgi.service.component.ComponentContext; |
| import org.slf4j.Logger; |
| |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.concurrent.ConcurrentMap; |
| import java.util.concurrent.CopyOnWriteArrayList; |
| |
| import static org.onosproject.mapping.MappingEntry.MappingEntryState.PENDING_ADD; |
| import static org.onosproject.mapping.MappingEntry.MappingEntryState.PENDING_REMOVE; |
| import static org.onosproject.mapping.MappingEvent.Type.MAPPING_ADDED; |
| import static org.onosproject.mapping.MappingEvent.Type.MAPPING_REMOVED; |
| import static org.onosproject.mapping.MappingEvent.Type.MAPPING_UPDATED; |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| /** |
| * Manages inventory of mappings using trivial in-memory implementation. |
| */ |
| @Component(immediate = true) |
| @Service |
| public class SimpleMappingStore |
| extends AbstractStore<MappingEvent, MappingStoreDelegate> |
| implements MappingStore { |
| |
| private final Logger log = getLogger(getClass()); |
| |
| private static final String UNRECOGNIZED_STORE_MSG = "Unrecognized store type {}"; |
| |
| private final ConcurrentMap<DeviceId, ConcurrentMap<MappingId, |
| List<StoredMappingEntry>>> mapDbStore = Maps.newConcurrentMap(); |
| |
| private final ConcurrentMap<DeviceId, ConcurrentMap<MappingId, |
| List<StoredMappingEntry>>> mapCacheStore = Maps.newConcurrentMap(); |
| |
| @Activate |
| public void activate() { |
| log.info("Started"); |
| } |
| |
| @Deactivate |
| public void deactivate() { |
| mapDbStore.clear(); |
| mapCacheStore.clear(); |
| log.info("Stopped"); |
| } |
| |
| @Modified |
| public void modified(ComponentContext context) { |
| |
| } |
| |
| @Override |
| public int getMappingCount(Type type) { |
| int sum = 0; |
| |
| for (ConcurrentMap<MappingId, List<StoredMappingEntry>> mapDb : |
| getMappingStore(type).values()) { |
| for (List<StoredMappingEntry> mes : mapDb.values()) { |
| sum += mes.size(); |
| } |
| } |
| |
| return sum; |
| } |
| |
| @Override |
| public Iterable<MappingEntry> getAllMappingEntries(Type type) { |
| |
| List<MappingEntry> entries = Lists.newArrayList(); |
| |
| for (ConcurrentMap<MappingId, List<StoredMappingEntry>> mapDb : |
| getMappingStore(type).values()) { |
| for (List<StoredMappingEntry> mes : mapDb.values()) { |
| entries.addAll(mes); |
| } |
| } |
| |
| return entries; |
| } |
| |
| /** |
| * Obtains the mapping store for specified device and store type. |
| * |
| * @param type mapping store type |
| * @param deviceId device identifier |
| * @return Map representing Mapping Store of given device and store type |
| */ |
| private ConcurrentMap<MappingId, List<StoredMappingEntry>> |
| getMappingStoreByDeviceId(Type type, |
| DeviceId deviceId) { |
| switch (type) { |
| case MAP_DATABASE: |
| return mapDbStore.computeIfAbsent(deviceId, |
| k -> Maps.newConcurrentMap()); |
| case MAP_CACHE: |
| return mapCacheStore.computeIfAbsent(deviceId, |
| k -> Maps.newConcurrentMap()); |
| default: |
| log.error(UNRECOGNIZED_STORE_MSG, type); |
| return null; |
| } |
| } |
| |
| /** |
| * Obtains the mapping store for specified store type. |
| * |
| * @param type mapping store type |
| * @return mapping store |
| */ |
| private ConcurrentMap<DeviceId, ConcurrentMap<MappingId, List<StoredMappingEntry>>> |
| getMappingStore(Type type) { |
| switch (type) { |
| case MAP_DATABASE: |
| return mapDbStore; |
| case MAP_CACHE: |
| return mapCacheStore; |
| default: |
| log.error(UNRECOGNIZED_STORE_MSG, type); |
| return null; |
| } |
| } |
| |
| /** |
| * Obtains mapping entries for specified device, store type and mapping ID. |
| * |
| * @param type mapping store type |
| * @param deviceId device identifier |
| * @param mappingId mapping identifier |
| * @return a collection of mapping entries |
| */ |
| private List<StoredMappingEntry> getMappingEntriesInternal(Type type, |
| DeviceId deviceId, |
| MappingId mappingId) { |
| final ConcurrentMap<MappingId, List<StoredMappingEntry>> |
| store = getMappingStoreByDeviceId(type, deviceId); |
| List<StoredMappingEntry> r = store.get(mappingId); |
| if (r == null) { |
| final List<StoredMappingEntry> concurrentlyAdded; |
| r = new CopyOnWriteArrayList<>(); |
| concurrentlyAdded = store.putIfAbsent(mappingId, r); |
| if (concurrentlyAdded != null) { |
| return concurrentlyAdded; |
| } |
| } |
| return r; |
| } |
| |
| /** |
| * Obtains a mapping entry for specified device, store type and mapping. |
| * |
| * @param type mapping store type |
| * @param deviceId device identifier |
| * @param mapping mapping identifier |
| * @return a mapping entry |
| */ |
| private MappingEntry getMappingEntryInternal(Type type, DeviceId deviceId, |
| Mapping mapping) { |
| List<StoredMappingEntry> mes = |
| getMappingEntriesInternal(type, deviceId, mapping.id()); |
| for (StoredMappingEntry me : mes) { |
| if (me.equals(mapping)) { |
| return me; |
| } |
| } |
| return null; |
| } |
| |
| @Override |
| public MappingEntry getMappingEntry(Type type, Mapping mapping) { |
| return getMappingEntryInternal(type, mapping.deviceId(), mapping); |
| } |
| |
| @Override |
| public Iterable<MappingEntry> getMappingEntries(Type type, DeviceId deviceId) { |
| // FIXME: a better way is using Java 8 API to return immutable iterables |
| return FluentIterable.from(getMappingStoreByDeviceId(type, deviceId).values()) |
| .transformAndConcat(Collections::unmodifiableList); |
| } |
| |
| @Override |
| public void storeMapping(Type type, MappingEntry mapping) { |
| |
| List<StoredMappingEntry> entries = |
| getMappingEntriesInternal(type, mapping.deviceId(), mapping.id()); |
| |
| synchronized (entries) { |
| if (!entries.contains(mapping)) { |
| StoredMappingEntry entry = |
| new DefaultMappingEntry(mapping, mapping.state()); |
| entries.add(entry); |
| } |
| } |
| } |
| |
| @Override |
| public void pendingDeleteMapping(Type type, Mapping mapping) { |
| |
| List<StoredMappingEntry> entries = |
| getMappingEntriesInternal(type, mapping.deviceId(), mapping.id()); |
| |
| synchronized (entries) { |
| for (StoredMappingEntry entry : entries) { |
| if (entry.equals(mapping)) { |
| synchronized (entry) { |
| entry.setState(PENDING_REMOVE); |
| } |
| } |
| } |
| } |
| } |
| |
| @Override |
| public MappingEvent addOrUpdateMappingEntry(Type type, MappingEntry entry) { |
| |
| List<StoredMappingEntry> entries = |
| getMappingEntriesInternal(type, entry.deviceId(), entry.id()); |
| synchronized (entries) { |
| for (StoredMappingEntry stored : entries) { |
| if (stored.equals(entry)) { |
| if (stored.state() == PENDING_ADD) { |
| stored.setState(MappingEntryState.ADDED); |
| return new MappingEvent(MAPPING_ADDED, entry); |
| } |
| return new MappingEvent(MAPPING_UPDATED, entry); |
| } |
| } |
| } |
| |
| log.error("Mapping was not found in store {} to update", entry); |
| |
| return null; |
| } |
| |
| @Override |
| public MappingEvent removeMapping(Type type, Mapping mapping) { |
| |
| List<StoredMappingEntry> entries = |
| getMappingEntriesInternal(type, mapping.deviceId(), mapping.id()); |
| synchronized (entries) { |
| if (entries.remove(mapping)) { |
| return new MappingEvent(MAPPING_REMOVED, mapping); |
| } |
| } |
| return null; |
| } |
| |
| @Override |
| public MappingEvent pendingMappingEntry(Type type, MappingEntry entry) { |
| List<StoredMappingEntry> entries = |
| getMappingEntriesInternal(type, entry.deviceId(), entry.id()); |
| synchronized (entries) { |
| for (StoredMappingEntry stored : entries) { |
| if (stored.equals(entry) && (stored.state() != PENDING_ADD)) { |
| synchronized (stored) { |
| stored.setState(PENDING_ADD); |
| return new MappingEvent(MAPPING_UPDATED, entry); |
| } |
| } |
| } |
| } |
| return null; |
| } |
| |
| @Override |
| public void purgeMappingEntry(Type type, DeviceId deviceId) { |
| getMappingStore(type).remove(deviceId); |
| } |
| |
| @Override |
| public void purgeMappingEntries(Type type) { |
| getMappingStore(type).clear(); |
| } |
| } |
| |
| |