| /**************************************************************** |
| * Licensed to the Apache Software Foundation (ASF) under one * |
| * or more contributor license agreements. See the NOTICE file * |
| * distributed with this work for additional information * |
| * regarding copyright ownership. The ASF licenses this file * |
| * to you 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.apache.james.jmap.memory.projections; |
| |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| import javax.inject.Inject; |
| |
| import org.apache.james.jmap.api.projections.MessageFastViewPrecomputedProperties; |
| import org.apache.james.jmap.api.projections.MessageFastViewProjection; |
| import org.apache.james.mailbox.model.MessageId; |
| import org.apache.james.metrics.api.Metric; |
| import org.apache.james.metrics.api.MetricFactory; |
| |
| import com.google.common.base.Preconditions; |
| |
| import reactor.core.publisher.Mono; |
| |
| public class MemoryMessageFastViewProjection implements MessageFastViewProjection { |
| |
| private final ConcurrentHashMap<MessageId, MessageFastViewPrecomputedProperties> projectionItems; |
| private final Metric metricRetrieveHitCount; |
| private final Metric metricRetrieveMissCount; |
| |
| @Inject |
| public MemoryMessageFastViewProjection(MetricFactory metricFactory) { |
| this.projectionItems = new ConcurrentHashMap<>(); |
| this.metricRetrieveHitCount = metricFactory.generate(METRIC_RETRIEVE_HIT_COUNT); |
| this.metricRetrieveMissCount = metricFactory.generate(METRIC_RETRIEVE_MISS_COUNT); |
| } |
| |
| @Override |
| public Mono<Void> store(MessageId messageId, MessageFastViewPrecomputedProperties precomputedProperties) { |
| Preconditions.checkNotNull(messageId); |
| Preconditions.checkNotNull(precomputedProperties); |
| |
| return Mono.fromRunnable(() -> projectionItems.put(messageId, precomputedProperties)); |
| } |
| |
| @Override |
| public Mono<MessageFastViewPrecomputedProperties> retrieve(MessageId messageId) { |
| Preconditions.checkNotNull(messageId); |
| |
| return Mono.fromSupplier(() -> projectionItems.get(messageId)) |
| .doOnNext(preview -> metricRetrieveHitCount.increment()) |
| .switchIfEmpty(Mono.fromRunnable(metricRetrieveMissCount::increment)); |
| } |
| |
| @Override |
| public Mono<Void> delete(MessageId messageId) { |
| Preconditions.checkNotNull(messageId); |
| |
| return Mono.fromRunnable(() -> projectionItems.remove(messageId)); |
| } |
| |
| @Override |
| public Mono<Void> clear() { |
| return Mono.fromRunnable(projectionItems::clear); |
| } |
| } |