4e112481a5
Since our internal change index has an upper limit 1MiB for EXACT Text field, this change prevents users to put topic which is larger than 2048. Bug: Issue 7197 Change-Id: I705869995627820be3a49e157fa8c81dae96faf0
147 lines
5.6 KiB
Java
147 lines
5.6 KiB
Java
// Copyright (C) 2009 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;
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import static java.util.Comparator.comparingInt;
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import com.google.common.collect.Maps;
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import com.google.common.collect.Ordering;
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import com.google.common.io.BaseEncoding;
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import com.google.gerrit.reviewdb.client.Change;
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import com.google.gerrit.reviewdb.client.PatchSet;
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import com.google.inject.Singleton;
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import java.io.IOException;
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import java.security.SecureRandom;
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import java.util.Map;
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import java.util.Random;
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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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@Singleton
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public class ChangeUtil {
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public static final int TOPIC_MAX_LENGTH = 2048;
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private static final Random UUID_RANDOM = new SecureRandom();
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private static final BaseEncoding UUID_ENCODING = BaseEncoding.base16().lowerCase();
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private static final int SUBJECT_MAX_LENGTH = 80;
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private static final String SUBJECT_CROP_APPENDIX = "...";
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private static final int SUBJECT_CROP_RANGE = 10;
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public static final Ordering<PatchSet> PS_ID_ORDER =
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Ordering.from(comparingInt(PatchSet::getPatchSetId));
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public static String formatChangeUrl(String canonicalWebUrl, Change change) {
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return canonicalWebUrl + "#/c/" + change.getProject().get() + "/+/" + change.getChangeId();
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}
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/** @return a new unique identifier for change message entities. */
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public static String messageUuid() {
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byte[] buf = new byte[8];
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UUID_RANDOM.nextBytes(buf);
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return UUID_ENCODING.encode(buf, 0, 4) + '_' + UUID_ENCODING.encode(buf, 4, 4);
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}
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/**
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* Get the next patch set ID from a previously-read map of all refs.
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*
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* @param allRefs map of full ref name to ref, in the same format returned by {@link
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* org.eclipse.jgit.lib.RefDatabase#getRefs(String)} when passing {@code ""}.
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* @param id previous patch set ID.
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* @return next unused patch set ID for the same change, skipping any IDs whose corresponding ref
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* names appear in the {@code allRefs} map.
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*/
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public static PatchSet.Id nextPatchSetIdFromAllRefsMap(Map<String, Ref> allRefs, PatchSet.Id id) {
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PatchSet.Id next = nextPatchSetId(id);
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while (allRefs.containsKey(next.toRefName())) {
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next = nextPatchSetId(next);
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}
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return next;
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}
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/**
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* Get the next patch set ID from a previously-read map of refs below the change prefix.
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*
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* @param changeRefs map of ref suffix to SHA-1, where the keys are ref names with the {@code
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* refs/changes/CD/ABCD/} prefix stripped. All refs should be under {@code id}'s change ref
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* prefix. The keys match the format returned by {@link
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* org.eclipse.jgit.lib.RefDatabase#getRefs(String)} when passing the appropriate {@code
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* refs/changes/CD/ABCD}.
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* @param id previous patch set ID.
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* @return next unused patch set ID for the same change, skipping any IDs whose corresponding ref
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* names appear in the {@code changeRefs} map.
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*/
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public static PatchSet.Id nextPatchSetIdFromChangeRefsMap(
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Map<String, ObjectId> changeRefs, PatchSet.Id id) {
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int prefixLen = id.getParentKey().toRefPrefix().length();
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PatchSet.Id next = nextPatchSetId(id);
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while (changeRefs.containsKey(next.toRefName().substring(prefixLen))) {
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next = nextPatchSetId(next);
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}
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return next;
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}
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/**
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* Get the next patch set ID just looking at a single previous patch set ID.
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*
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* <p>This patch set ID may or may not be available in the database; callers that want a
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* previously-unused ID should use {@link #nextPatchSetIdFromAllRefsMap} or {@link
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* #nextPatchSetIdFromChangeRefsMap}.
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*
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* @param id previous patch set ID.
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* @return next patch set ID for the same change, incrementing by 1.
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*/
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public static PatchSet.Id nextPatchSetId(PatchSet.Id id) {
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return new PatchSet.Id(id.getParentKey(), id.get() + 1);
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}
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/**
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* Get the next patch set ID from scanning refs in the repo.
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*
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* @param git repository to scan for patch set refs.
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* @param id previous patch set ID.
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* @return next unused patch set ID for the same change, skipping any IDs whose corresponding ref
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* names appear in the repository.
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*/
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public static PatchSet.Id nextPatchSetId(Repository git, PatchSet.Id id) throws IOException {
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return nextPatchSetIdFromChangeRefsMap(
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Maps.transformValues(
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git.getRefDatabase().getRefs(id.getParentKey().toRefPrefix()), Ref::getObjectId),
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id);
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}
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public static String cropSubject(String subject) {
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if (subject.length() > SUBJECT_MAX_LENGTH) {
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int maxLength = SUBJECT_MAX_LENGTH - SUBJECT_CROP_APPENDIX.length();
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for (int cropPosition = maxLength;
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cropPosition > maxLength - SUBJECT_CROP_RANGE;
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cropPosition--) {
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if (Character.isWhitespace(subject.charAt(cropPosition - 1))) {
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return subject.substring(0, cropPosition) + SUBJECT_CROP_APPENDIX;
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}
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}
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return subject.substring(0, maxLength) + SUBJECT_CROP_APPENDIX;
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}
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return subject;
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}
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public static String status(Change c) {
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return c != null ? c.getStatus().name().toLowerCase() : "deleted";
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}
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private ChangeUtil() {}
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}
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