Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance.
Project price only 1 $
You can buy this project and download/modify it how often you want.
com.google.gerrit.server.notedb.StarredChangesUtilNoteDbImpl Maven / Gradle / Ivy
// Copyright (C) 2015 The Android Open Source Project
//
// Licensed 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 com.google.gerrit.server.notedb;
import static com.google.gerrit.server.update.context.RefUpdateContext.RefUpdateType.CHANGE_MODIFICATION;
import static java.nio.charset.StandardCharsets.UTF_8;
import static java.util.stream.Collectors.toSet;
import com.google.common.base.Joiner;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableSet;
import com.google.common.flogger.FluentLogger;
import com.google.common.primitives.Ints;
import com.google.gerrit.common.Nullable;
import com.google.gerrit.entities.Account;
import com.google.gerrit.entities.Change;
import com.google.gerrit.entities.RefNames;
import com.google.gerrit.exceptions.StorageException;
import com.google.gerrit.git.GitUpdateFailureException;
import com.google.gerrit.git.LockFailureException;
import com.google.gerrit.server.GerritPersonIdent;
import com.google.gerrit.server.StarredChangesUtil;
import com.google.gerrit.server.config.AllUsersName;
import com.google.gerrit.server.extensions.events.GitReferenceUpdated;
import com.google.gerrit.server.git.GitRepositoryManager;
import com.google.gerrit.server.logging.Metadata;
import com.google.gerrit.server.logging.TraceContext;
import com.google.gerrit.server.logging.TraceContext.TraceTimer;
import com.google.gerrit.server.update.context.RefUpdateContext;
import com.google.inject.Inject;
import com.google.inject.Provider;
import com.google.inject.Singleton;
import java.io.IOException;
import java.util.List;
import java.util.Objects;
import java.util.Optional;
import java.util.Set;
import java.util.stream.Collectors;
import org.eclipse.jgit.lib.BatchRefUpdate;
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.NullProgressMonitor;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.ObjectInserter;
import org.eclipse.jgit.lib.PersonIdent;
import org.eclipse.jgit.lib.Ref;
import org.eclipse.jgit.lib.RefDatabase;
import org.eclipse.jgit.lib.RefUpdate;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevWalk;
import org.eclipse.jgit.transport.ReceiveCommand;
@Singleton
public class StarredChangesUtilNoteDbImpl implements StarredChangesUtil {
private static final FluentLogger logger = FluentLogger.forEnclosingClass();
private static final String DEFAULT_STAR_LABEL = "star";
private final GitRepositoryManager repoManager;
private final GitReferenceUpdated gitRefUpdated;
private final AllUsersName allUsers;
private final Provider serverIdent;
@Inject
StarredChangesUtilNoteDbImpl(
GitRepositoryManager repoManager,
GitReferenceUpdated gitRefUpdated,
AllUsersName allUsers,
@GerritPersonIdent Provider serverIdent) {
this.repoManager = repoManager;
this.gitRefUpdated = gitRefUpdated;
this.allUsers = allUsers;
this.serverIdent = serverIdent;
}
@Override
public boolean isStarred(Account.Id accountId, Change.Id changeId) {
try (Repository repo = repoManager.openRepository(allUsers)) {
return getStarRef(repo, RefNames.refsStarredChanges(changeId, accountId)).isPresent();
} catch (IOException e) {
throw new StorageException(
String.format(
"Reading stars from change %d for account %d failed",
changeId.get(), accountId.get()),
e);
}
}
@Override
public void star(Account.Id accountId, Change.Id changeId) {
updateStar(accountId, changeId, true);
}
@Override
public void unstar(Account.Id accountId, Change.Id changeId) {
updateStar(accountId, changeId, false);
}
private void updateStar(Account.Id accountId, Change.Id changeId, boolean shouldAdd) {
try (Repository repo = repoManager.openRepository(allUsers)) {
String refName = RefNames.refsStarredChanges(changeId, accountId);
if (shouldAdd) {
addRef(repo, refName, null);
} else {
Optional[ ref = getStarRef(repo, refName);
if (ref.isPresent()) {
deleteRef(repo, refName, ref.get().getObjectId());
}
}
} catch (IOException e) {
throw new StorageException(
String.format("Star change %d for account %d failed", changeId.get(), accountId.get()),
e);
}
}
@Override
public Set] areStarred(
Repository allUsersRepo, List changeIds, Account.Id caller) {
List starRefs =
changeIds.stream()
.map(c -> RefNames.refsStarredChanges(c, caller))
.collect(Collectors.toList());
try {
return allUsersRepo.getRefDatabase().exactRef(starRefs.toArray(new String[0])).keySet()
.stream()
.map(r -> Change.Id.fromAllUsersRef(r))
.collect(Collectors.toSet());
} catch (IOException e) {
logger.atWarning().withCause(e).log(
"Failed getting starred changes for account %d within changes: %s",
caller.get(), Joiner.on(", ").join(changeIds));
return ImmutableSet.of();
}
}
@Override
public void unstarAllForChangeDeletion(Change.Id changeId) throws IOException {
try (Repository repo = repoManager.openRepository(allUsers);
RevWalk rw = new RevWalk(repo)) {
BatchRefUpdate batchUpdate = repo.getRefDatabase().newBatchUpdate();
batchUpdate.setAllowNonFastForwards(true);
batchUpdate.setRefLogIdent(serverIdent.get());
batchUpdate.setRefLogMessage("Unstar change " + changeId.get(), true);
for (Account.Id accountId : getStars(repo, changeId)) {
String refName = RefNames.refsStarredChanges(changeId, accountId);
Ref ref = repo.getRefDatabase().exactRef(refName);
if (ref != null) {
batchUpdate.addCommand(new ReceiveCommand(ref.getObjectId(), ObjectId.zeroId(), refName));
}
}
batchUpdate.execute(rw, NullProgressMonitor.INSTANCE);
for (ReceiveCommand command : batchUpdate.getCommands()) {
if (command.getResult() != ReceiveCommand.Result.OK) {
String message =
String.format(
"Unstar change %d failed, ref %s could not be deleted: %s",
changeId.get(), command.getRefName(), command.getResult());
if (command.getResult() == ReceiveCommand.Result.LOCK_FAILURE) {
throw new LockFailureException(message, batchUpdate);
}
throw new GitUpdateFailureException(message, batchUpdate);
}
}
}
}
@Override
public ImmutableMap byChange(Change.Id changeId) {
try (Repository repo = repoManager.openRepository(allUsers)) {
ImmutableMap.Builder builder = ImmutableMap.builder();
for (Account.Id accountId : getStars(repo, changeId)) {
Optional[ starRef = getStarRef(repo, RefNames.refsStarredChanges(changeId, accountId));
if (starRef.isPresent()) {
builder.put(accountId, starRef.get());
}
}
return builder.build();
} catch (IOException e) {
throw new StorageException(
String.format("Get accounts that starred change %d failed", changeId.get()), e);
}
}
@Override
public ImmutableSet] byAccountId(Account.Id accountId) {
return byAccountId(accountId, true);
}
@Override
public ImmutableSet byAccountId(Account.Id accountId, boolean skipInvalidChanges) {
try (Repository repo = repoManager.openRepository(allUsers)) {
ImmutableSet.Builder builder = ImmutableSet.builder();
for (Ref ref : repo.getRefDatabase().getRefsByPrefix(RefNames.REFS_STARRED_CHANGES)) {
Account.Id currentAccountId = Account.Id.fromRef(ref.getName());
// Skip all refs that don't correspond with accountId.
if (currentAccountId == null || !currentAccountId.equals(accountId)) {
continue;
}
// Skip invalid change ids.
Change.Id changeId = Change.Id.fromAllUsersRef(ref.getName());
if (skipInvalidChanges && changeId == null) {
continue;
}
builder.add(changeId);
}
return builder.build();
} catch (IOException e) {
throw new StorageException(
String.format("Get starred changes for account %d failed", accountId.get()), e);
}
}
private static Set getStars(Repository allUsers, Change.Id changeId)
throws IOException {
String prefix = RefNames.refsStarredChangesPrefix(changeId);
RefDatabase refDb = allUsers.getRefDatabase();
return refDb.getRefsByPrefix(prefix).stream()
.map(r -> r.getName().substring(prefix.length()))
.map(refPart -> Ints.tryParse(refPart))
.filter(Objects::nonNull)
.map(id -> Account.id(id))
.collect(toSet());
}
private static Optional[ getStarRef(Repository repo, @Nullable String refName)
throws IOException {
if (refName == null) {
return Optional.empty();
}
Ref ref = repo.exactRef(refName);
return Optional.ofNullable(ref);
}
private static ObjectId writeStarredRefContent(Repository repo) throws IOException {
try (ObjectInserter oi = repo.newObjectInserter()) {
ObjectId id = oi.insert(Constants.OBJ_BLOB, DEFAULT_STAR_LABEL.getBytes(UTF_8));
oi.flush();
return id;
}
}
private void addRef(Repository repo, String refName, ObjectId oldObjectId) throws IOException {
try (TraceTimer traceTimer =
TraceContext.newTimer(
"Add star ref",
Metadata.builder().noteDbRefName(refName).resourceCount(1).build());
RevWalk rw = new RevWalk(repo)) {
RefUpdate u = repo.updateRef(refName);
u.setExpectedOldObjectId(oldObjectId);
u.setForceUpdate(true);
u.setNewObjectId(writeStarredRefContent(repo));
u.setRefLogIdent(serverIdent.get());
u.setRefLogMessage("Add star ref", true);
try (RefUpdateContext ctx = RefUpdateContext.open(CHANGE_MODIFICATION)) {
RefUpdate.Result result = u.update(rw);
switch (result) {
case NEW:
case FORCED:
case NO_CHANGE:
case FAST_FORWARD:
gitRefUpdated.fire(allUsers, u, null);
return;
case LOCK_FAILURE:
throw new LockFailureException(
String.format("Add star ref on ref %s failed", refName), u);
case IO_FAILURE:
case NOT_ATTEMPTED:
case REJECTED:
case REJECTED_CURRENT_BRANCH:
case RENAMED:
case REJECTED_MISSING_OBJECT:
case REJECTED_OTHER_REASON:
default:
throw new StorageException(
String.format("Add star ref on ref %s failed: %s", refName, result.name()));
}
}
}
}
private void deleteRef(Repository repo, String refName, ObjectId oldObjectId) throws IOException {
if (ObjectId.zeroId().equals(oldObjectId)) {
// ref doesn't exist
return;
}
try (TraceTimer traceTimer =
TraceContext.newTimer(
"Delete star ref", Metadata.builder().noteDbRefName(refName).build())) {
RefUpdate u = repo.updateRef(refName);
u.setForceUpdate(true);
u.setExpectedOldObjectId(oldObjectId);
u.setRefLogIdent(serverIdent.get());
u.setRefLogMessage("Unstar change", true);
try (RefUpdateContext ctx = RefUpdateContext.open(CHANGE_MODIFICATION)) {
RefUpdate.Result result = u.delete();
switch (result) {
case FORCED:
gitRefUpdated.fire(allUsers, u, null);
return;
case LOCK_FAILURE:
throw new LockFailureException(String.format("Delete star ref %s failed", refName), u);
case NEW:
case NO_CHANGE:
case FAST_FORWARD:
case IO_FAILURE:
case NOT_ATTEMPTED:
case REJECTED:
case REJECTED_CURRENT_BRANCH:
case RENAMED:
case REJECTED_MISSING_OBJECT:
case REJECTED_OTHER_REASON:
default:
throw new StorageException(
String.format("Delete star ref %s failed: %s", refName, result.name()));
}
}
}
}
}
]
