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87 lines
3 KiB
Java
87 lines
3 KiB
Java
// Copyright 2017 The Nomulus Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package google.registry.model.ofy;
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import static google.registry.util.CollectionUtils.nullToEmptyImmutableCopy;
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import static org.joda.time.DateTimeZone.UTC;
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import com.google.common.collect.ImmutableSet;
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import com.googlecode.objectify.Key;
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import com.googlecode.objectify.annotation.Entity;
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import com.googlecode.objectify.annotation.Id;
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import com.googlecode.objectify.annotation.Parent;
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import google.registry.model.ImmutableObject;
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import google.registry.model.annotations.NotBackedUp;
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import google.registry.model.annotations.NotBackedUp.Reason;
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import java.util.LinkedHashSet;
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import java.util.Set;
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import org.joda.time.DateTime;
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/**
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* Archived Datastore transaction that can be replayed.
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*
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* <p>Entities of this kind are entity group sharded using a {@link CommitLogBucket} parent. Each
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* object that was saved during this transaction is stored in a {@link CommitLogMutation} child
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* entity.
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*/
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@Entity
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@NotBackedUp(reason = Reason.COMMIT_LOGS)
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public class CommitLogManifest extends ImmutableObject {
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/** Commit log manifests are parented on a random bucket. */
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@Parent
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Key<CommitLogBucket> parent;
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/**
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* The commit time (in millis since the epoch).
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*
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* <p>This will be unique among siblings sharing the same parent {@link CommitLogBucket}.
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*/
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@Id
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long commitTime;
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/** Keys that were deleted in this commit. (Saves are recorded in child entities.) */
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Set<Key<?>> deletions = new LinkedHashSet<>();
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public DateTime getCommitTime() {
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return new DateTime(commitTime, UTC);
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}
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public int getBucketId() {
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return (int) parent.getId();
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}
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public ImmutableSet<Key<?>> getDeletions() {
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return nullToEmptyImmutableCopy(deletions);
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}
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public static CommitLogManifest create(
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Key<CommitLogBucket> parent, DateTime commitTime, Set<Key<?>> deletions) {
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CommitLogManifest instance = new CommitLogManifest();
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instance.parent = parent;
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instance.commitTime = commitTime.getMillis();
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instance.deletions = nullToEmptyImmutableCopy(deletions);
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return instance;
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}
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public static Key<CommitLogManifest> createKey(Key<CommitLogBucket> parent, DateTime commitTime) {
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return Key.create(parent, CommitLogManifest.class, commitTime.getMillis());
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}
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/** Returns the commit time encoded into a CommitLogManifest key. */
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public static DateTime extractCommitTime(Key<CommitLogManifest> manifestKey) {
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return new DateTime(manifestKey.getId(), UTC);
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}
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}
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