| /**************************************************************** |
| * 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.vault.blob; |
| |
| import java.time.Clock; |
| import java.time.Instant; |
| import java.time.ZonedDateTime; |
| import java.util.Collection; |
| import java.util.List; |
| import java.util.Optional; |
| import java.util.concurrent.ConcurrentLinkedQueue; |
| |
| import javax.inject.Inject; |
| |
| import org.apache.james.blob.api.BucketName; |
| import org.apache.james.task.Task; |
| import org.apache.james.task.TaskExecutionDetails; |
| import org.apache.james.task.TaskType; |
| |
| import com.github.steveash.guavate.Guavate; |
| import reactor.core.publisher.Flux; |
| import reactor.core.scheduler.Schedulers; |
| |
| public class BlobStoreVaultGarbageCollectionTask implements Task { |
| |
| public static class AdditionalInformation implements TaskExecutionDetails.AdditionalInformation { |
| |
| private final ZonedDateTime beginningOfRetentionPeriod; |
| private final Collection<BucketName> deletedBuckets; |
| private final Instant timestamp; |
| |
| AdditionalInformation(ZonedDateTime beginningOfRetentionPeriod, Collection<BucketName> deletedBuckets, Instant timestamp) { |
| this.beginningOfRetentionPeriod = beginningOfRetentionPeriod; |
| this.deletedBuckets = deletedBuckets; |
| this.timestamp = timestamp; |
| } |
| |
| public ZonedDateTime getBeginningOfRetentionPeriod() { |
| return beginningOfRetentionPeriod; |
| } |
| |
| public List<String> getDeletedBuckets() { |
| return deletedBuckets.stream() |
| .map(BucketName::asString) |
| .collect(Guavate.toImmutableList()); |
| } |
| |
| @Override |
| public Instant timestamp() { |
| return timestamp; |
| } |
| } |
| |
| static final TaskType TYPE = TaskType.of("deletedMessages/blobStoreBasedGarbageCollection"); |
| |
| private final Flux<BucketName> retentionOperation; |
| private final ZonedDateTime beginningOfRetentionPeriod; |
| private final Collection<BucketName> deletedBuckets; |
| |
| public static class Factory { |
| private final BlobStoreDeletedMessageVault deletedMessageVault; |
| |
| @Inject |
| public Factory(BlobStoreDeletedMessageVault deletedMessageVault) { |
| this.deletedMessageVault = deletedMessageVault; |
| } |
| |
| public BlobStoreVaultGarbageCollectionTask create() { |
| return new BlobStoreVaultGarbageCollectionTask(deletedMessageVault); |
| } |
| } |
| |
| private BlobStoreVaultGarbageCollectionTask(BlobStoreDeletedMessageVault deletedMessageVault) { |
| this.beginningOfRetentionPeriod = deletedMessageVault.getBeginningOfRetentionPeriod(); |
| this.retentionOperation = deletedMessageVault.deleteExpiredMessages(beginningOfRetentionPeriod); |
| this.deletedBuckets = new ConcurrentLinkedQueue<>(); |
| } |
| |
| @Override |
| public Result run() { |
| retentionOperation |
| .doOnNext(deletedBuckets::add) |
| .subscribeOn(Schedulers.boundedElastic()) |
| .then() |
| .block(); |
| |
| return Result.COMPLETED; |
| } |
| |
| @Override |
| public TaskType type() { |
| return TYPE; |
| } |
| |
| @Override |
| public Optional<TaskExecutionDetails.AdditionalInformation> details() { |
| return Optional.of(new AdditionalInformation(beginningOfRetentionPeriod, deletedBuckets, Clock.systemUTC().instant())); |
| } |
| |
| ZonedDateTime getBeginningOfRetentionPeriod() { |
| return beginningOfRetentionPeriod; |
| } |
| |
| Flux<BucketName> getRetentionOperation() { |
| return retentionOperation; |
| } |
| } |