916112ed91
To be able to tell whether an account is stale in the index we need to record a state ID for each source that contributes to the account document (user branch + external IDs). For the user branch we can record its ref state (similar to how the change index records ref states / ref state patterns for all refs that contribute to a change). For the external IDs branch the ref state is not sufficient because it changes whenever any external ID is updated and we don't want to detect all accounts as stale after each external ID update. Hence for the external IDs we record the IDs of the note blobs instead. Change-Id: I7f0383cb46e461cc5158bf13f31d608a927bfd49 Signed-off-by: Edwin Kempin <ekempin@google.com>
66 lines
2.2 KiB
Java
66 lines
2.2 KiB
Java
// Copyright (C) 2017 The Android Open Source Project
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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 com.google.gerrit.server.index;
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import static com.google.common.base.MoreObjects.firstNonNull;
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import static com.google.common.base.Preconditions.checkArgument;
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import static java.nio.charset.StandardCharsets.UTF_8;
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import com.google.auto.value.AutoValue;
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import com.google.gerrit.common.Nullable;
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import com.google.gerrit.reviewdb.client.Project;
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import java.io.IOException;
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import org.eclipse.jgit.lib.Constants;
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import org.eclipse.jgit.lib.ObjectId;
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import org.eclipse.jgit.lib.Ref;
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import org.eclipse.jgit.lib.Repository;
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@AutoValue
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public abstract class RefState {
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public static RefState create(String ref, String sha) {
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return new AutoValue_RefState(ref, ObjectId.fromString(sha));
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}
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public static RefState create(String ref, @Nullable ObjectId id) {
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return new AutoValue_RefState(ref, firstNonNull(id, ObjectId.zeroId()));
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}
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public static RefState of(Ref ref) {
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return new AutoValue_RefState(ref.getName(), ref.getObjectId());
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}
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public byte[] toByteArray(Project.NameKey project) {
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byte[] a = (project.toString() + ':' + ref() + ':').getBytes(UTF_8);
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byte[] b = new byte[a.length + Constants.OBJECT_ID_STRING_LENGTH];
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System.arraycopy(a, 0, b, 0, a.length);
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id().copyTo(b, a.length);
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return b;
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}
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public static void check(boolean condition, String str) {
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checkArgument(condition, "invalid RefState: %s", str);
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}
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public abstract String ref();
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public abstract ObjectId id();
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public boolean match(Repository repo) throws IOException {
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Ref ref = repo.exactRef(ref());
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ObjectId expected = ref != null ? ref.getObjectId() : ObjectId.zeroId();
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return id().equals(expected);
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}
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}
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