| /* |
| * Copyright 2016-present 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.primitives.impl; |
| |
| import java.util.Collection; |
| import java.util.Map; |
| import java.util.Objects; |
| import java.util.Set; |
| import java.util.concurrent.CompletableFuture; |
| import java.util.stream.Collectors; |
| |
| import org.onlab.util.Tools; |
| import org.onosproject.store.service.AsyncConsistentMap; |
| import org.onosproject.store.service.AsyncDistributedSet; |
| import org.onosproject.store.service.MapEvent; |
| import org.onosproject.store.service.MapEventListener; |
| import org.onosproject.store.service.SetEvent; |
| import org.onosproject.store.service.SetEventListener; |
| |
| import com.google.common.collect.ImmutableSet; |
| import com.google.common.collect.Maps; |
| import com.google.common.collect.Sets; |
| import org.onosproject.utils.MeteringAgent; |
| |
| /** |
| * Implementation of {@link AsyncDistributedSet}. |
| * |
| * @param <E> set entry type |
| */ |
| public class DefaultAsyncDistributedSet<E> implements AsyncDistributedSet<E> { |
| |
| private static final String CONTAINS = "contains"; |
| private static final String PRIMITIVE_NAME = "distributedSet"; |
| private static final String SIZE = "size"; |
| private static final String IS_EMPTY = "isEmpty"; |
| private static final String ADD = "add"; |
| private static final String REMOVE = "remove"; |
| private static final String CONTAINS_ALL = "containsAll"; |
| private static final String ADD_ALL = "addAll"; |
| private static final String RETAIN_ALL = "retainAll"; |
| private static final String REMOVE_ALL = "removeAll"; |
| private static final String CLEAR = "clear"; |
| private static final String GET_AS_IMMUTABLE_SET = "getAsImmutableSet"; |
| |
| private final String name; |
| private final AsyncConsistentMap<E, Boolean> backingMap; |
| private final Map<SetEventListener<E>, MapEventListener<E, Boolean>> listenerMapping = Maps.newIdentityHashMap(); |
| private final MeteringAgent monitor; |
| |
| public DefaultAsyncDistributedSet(AsyncConsistentMap<E, Boolean> backingMap, String name, boolean meteringEnabled) { |
| this.backingMap = backingMap; |
| this.name = name; |
| monitor = new MeteringAgent(PRIMITIVE_NAME, name, meteringEnabled); |
| } |
| |
| @Override |
| public String name() { |
| return name; |
| } |
| |
| @Override |
| public CompletableFuture<Integer> size() { |
| final MeteringAgent.Context timer = monitor.startTimer(SIZE); |
| return backingMap.size().whenComplete((r, e) -> timer.stop(null)); |
| } |
| |
| @Override |
| public CompletableFuture<Boolean> isEmpty() { |
| final MeteringAgent.Context timer = monitor.startTimer(IS_EMPTY); |
| return backingMap.isEmpty().whenComplete((r, e) -> timer.stop(null)); |
| } |
| |
| @Override |
| public CompletableFuture<Boolean> contains(E element) { |
| final MeteringAgent.Context timer = monitor.startTimer(CONTAINS); |
| return backingMap.containsKey(element).whenComplete((r, e) -> timer.stop(null)); |
| } |
| |
| @Override |
| public CompletableFuture<Boolean> add(E entry) { |
| final MeteringAgent.Context timer = monitor.startTimer(ADD); |
| return backingMap.putIfAbsent(entry, true).thenApply(Objects::isNull).whenComplete((r, e) -> timer.stop(null)); |
| } |
| |
| @Override |
| public CompletableFuture<Boolean> remove(E entry) { |
| final MeteringAgent.Context timer = monitor.startTimer(REMOVE); |
| return backingMap.remove(entry, true).whenComplete((r, e) -> timer.stop(null)); |
| } |
| |
| @Override |
| public CompletableFuture<Boolean> containsAll(Collection<? extends E> c) { |
| final MeteringAgent.Context timer = monitor.startTimer(CONTAINS_ALL); |
| return Tools.allOf(c.stream().map(this::contains).collect(Collectors.toList())).thenApply(v -> |
| v.stream().reduce(Boolean::logicalAnd).orElse(true)).whenComplete((r, e) -> timer.stop(null)); |
| } |
| |
| @Override |
| public CompletableFuture<Boolean> addAll(Collection<? extends E> c) { |
| final MeteringAgent.Context timer = monitor.startTimer(ADD_ALL); |
| return Tools.allOf(c.stream().map(this::add).collect(Collectors.toList())).thenApply(v -> |
| v.stream().reduce(Boolean::logicalOr).orElse(false)).whenComplete((r, e) -> timer.stop(null)); |
| } |
| |
| @Override |
| public CompletableFuture<Boolean> retainAll(Collection<? extends E> c) { |
| final MeteringAgent.Context timer = monitor.startTimer(RETAIN_ALL); |
| return backingMap.keySet().thenApply(set -> Sets.difference(set, Sets.newHashSet(c))) |
| .thenCompose(this::removeAll) |
| .whenComplete((r, e) -> timer.stop(null)); |
| } |
| |
| @Override |
| public CompletableFuture<Boolean> removeAll(Collection<? extends E> c) { |
| final MeteringAgent.Context timer = monitor.startTimer(REMOVE_ALL); |
| return Tools.allOf(c.stream().map(this::remove).collect(Collectors.toList())).thenApply(v -> |
| v.stream().reduce(Boolean::logicalOr).orElse(false)).whenComplete((r, e) -> timer.stop(null)); |
| } |
| |
| @Override |
| public CompletableFuture<Void> clear() { |
| final MeteringAgent.Context timer = monitor.startTimer(CLEAR); |
| return backingMap.clear().whenComplete((r, e) -> timer.stop(null)); |
| } |
| |
| @Override |
| public CompletableFuture<? extends Set<E>> getAsImmutableSet() { |
| final MeteringAgent.Context timer = monitor.startTimer(GET_AS_IMMUTABLE_SET); |
| return backingMap.keySet().thenApply(s -> ImmutableSet.copyOf(s)).whenComplete((r, e) -> timer.stop(null)); |
| } |
| |
| @Override |
| public CompletableFuture<Void> addListener(SetEventListener<E> listener) { |
| MapEventListener<E, Boolean> mapEventListener = mapEvent -> { |
| if (mapEvent.type() == MapEvent.Type.INSERT) { |
| listener.event(new SetEvent<>(name, SetEvent.Type.ADD, mapEvent.key())); |
| } else if (mapEvent.type() == MapEvent.Type.REMOVE) { |
| listener.event(new SetEvent<>(name, SetEvent.Type.REMOVE, mapEvent.key())); |
| } |
| }; |
| if (listenerMapping.putIfAbsent(listener, mapEventListener) == null) { |
| return backingMap.addListener(mapEventListener); |
| } |
| return CompletableFuture.completedFuture(null); |
| } |
| |
| @Override |
| public CompletableFuture<Void> removeListener(SetEventListener<E> listener) { |
| MapEventListener<E, Boolean> mapEventListener = listenerMapping.remove(listener); |
| if (mapEventListener != null) { |
| return backingMap.removeListener(mapEventListener); |
| } |
| return CompletableFuture.completedFuture(null); |
| } |
| } |