| // Copyright (C) 2013 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.googlesource.gerrit.plugins.reviewers; |
| |
| import com.google.common.base.Preconditions; |
| import com.google.common.base.Strings; |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.ImmutableSet; |
| import com.google.common.collect.Iterables; |
| import com.google.common.collect.Sets; |
| import com.google.gerrit.common.EventListener; |
| import com.google.gerrit.common.errors.NoSuchGroupException; |
| import com.google.gerrit.extensions.restapi.UnprocessableEntityException; |
| import com.google.gerrit.reviewdb.client.Account; |
| import com.google.gerrit.reviewdb.client.Change; |
| import com.google.gerrit.reviewdb.client.Project; |
| import com.google.gerrit.reviewdb.server.ReviewDb; |
| import com.google.gerrit.server.CurrentUser; |
| import com.google.gerrit.server.IdentifiedUser; |
| import com.google.gerrit.server.account.AccountByEmailCache; |
| import com.google.gerrit.server.account.AccountResolver; |
| import com.google.gerrit.server.account.GroupMembers; |
| import com.google.gerrit.server.data.ChangeAttribute; |
| import com.google.gerrit.server.events.Event; |
| import com.google.gerrit.server.events.PatchSetCreatedEvent; |
| import com.google.gerrit.server.git.GitRepositoryManager; |
| import com.google.gerrit.server.git.WorkQueue; |
| import com.google.gerrit.server.group.GroupsCollection; |
| import com.google.gerrit.server.project.NoSuchProjectException; |
| import com.google.gerrit.server.query.Predicate; |
| import com.google.gerrit.server.query.QueryParseException; |
| import com.google.gerrit.server.query.change.ChangeData; |
| import com.google.gerrit.server.query.change.ChangeQueryBuilder; |
| import com.google.gerrit.server.util.RequestContext; |
| import com.google.gerrit.server.util.ThreadLocalRequestContext; |
| import com.google.gwtorm.server.OrmException; |
| import com.google.gwtorm.server.SchemaFactory; |
| import com.google.inject.Inject; |
| import com.google.inject.Provider; |
| import com.google.inject.ProvisionException; |
| import com.google.inject.Singleton; |
| |
| import org.eclipse.jgit.lib.Repository; |
| import org.eclipse.jgit.revwalk.RevWalk; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.IOException; |
| import java.util.List; |
| import java.util.Set; |
| |
| @Singleton |
| class ChangeEventListener implements EventListener { |
| private static final Logger log = LoggerFactory |
| .getLogger(ChangeEventListener.class); |
| |
| private final AccountResolver accountResolver; |
| private final AccountByEmailCache byEmailCache; |
| private final Provider<GroupsCollection> groupsCollection; |
| private final GroupMembers.Factory groupMembersFactory; |
| private final DefaultReviewers.Factory reviewersFactory; |
| private final GitRepositoryManager repoManager; |
| private final WorkQueue workQueue; |
| private final IdentifiedUser.GenericFactory identifiedUserFactory; |
| private final ThreadLocalRequestContext tl; |
| private final SchemaFactory<ReviewDb> schemaFactory; |
| private final ChangeData.Factory changeDataFactory; |
| private final ReviewersConfig.Factory configFactory; |
| private final Provider<CurrentUser> user; |
| private final ChangeQueryBuilder queryBuilder; |
| |
| @Inject |
| ChangeEventListener( |
| final AccountResolver accountResolver, |
| final AccountByEmailCache byEmailCache, |
| final Provider<GroupsCollection> groupsCollection, |
| final GroupMembers.Factory groupMembersFactory, |
| final DefaultReviewers.Factory reviewersFactory, |
| final GitRepositoryManager repoManager, |
| final WorkQueue workQueue, |
| final IdentifiedUser.GenericFactory identifiedUserFactory, |
| final ThreadLocalRequestContext tl, |
| final SchemaFactory<ReviewDb> schemaFactory, |
| final ChangeData.Factory changeDataFactory, |
| final ReviewersConfig.Factory configFactory, |
| final Provider<CurrentUser> user, |
| final ChangeQueryBuilder queryBuilder) { |
| this.accountResolver = accountResolver; |
| this.byEmailCache = byEmailCache; |
| this.groupsCollection = groupsCollection; |
| this.groupMembersFactory = groupMembersFactory; |
| this.reviewersFactory = reviewersFactory; |
| this.repoManager = repoManager; |
| this.workQueue = workQueue; |
| this.identifiedUserFactory = identifiedUserFactory; |
| this.tl = tl; |
| this.schemaFactory = schemaFactory; |
| this.changeDataFactory = changeDataFactory; |
| this.configFactory = configFactory; |
| this.user = user; |
| this.queryBuilder = queryBuilder; |
| } |
| |
| @Override |
| public void onEvent(Event event) { |
| if (!(event instanceof PatchSetCreatedEvent)) { |
| return; |
| } |
| PatchSetCreatedEvent e = (PatchSetCreatedEvent) event; |
| ChangeAttribute c = e.change.get(); |
| Project.NameKey projectName = new Project.NameKey(c.project); |
| // TODO(davido): we have to cache per project configuration |
| ReviewersConfig config = configFactory.create(projectName); |
| List<ReviewerFilterSection> sections = config.getReviewerFilterSections(); |
| |
| if (sections.isEmpty()) { |
| return; |
| } |
| |
| try (Repository git = repoManager.openRepository(projectName); |
| RevWalk rw = new RevWalk(git); |
| ReviewDb reviewDb = schemaFactory.open()) { |
| ChangeData changeData = changeDataFactory.create( |
| reviewDb, projectName, new Change.Id(Integer.parseInt(c.number))); |
| Set<String> reviewers = findReviewers(sections, changeData); |
| if (reviewers.isEmpty()) { |
| return; |
| } |
| |
| final Change change = changeData.change(); |
| final Runnable task = reviewersFactory.create(change, |
| toAccounts(reviewDb, reviewers, projectName, |
| e.uploader.get().email)); |
| |
| workQueue.getDefaultQueue().submit(new Runnable() { |
| ReviewDb db = null; |
| |
| @Override |
| public void run() { |
| RequestContext old = tl.setContext(new RequestContext() { |
| |
| @Override |
| public CurrentUser getUser() { |
| return identifiedUserFactory.create(change.getOwner()); |
| } |
| |
| @Override |
| public Provider<ReviewDb> getReviewDbProvider() { |
| return new Provider<ReviewDb>() { |
| @Override |
| public ReviewDb get() { |
| if (db == null) { |
| try { |
| db = schemaFactory.open(); |
| } catch (OrmException e) { |
| throw new ProvisionException("Cannot open ReviewDb", e); |
| } |
| } |
| return db; |
| } |
| }; |
| } |
| }); |
| try { |
| task.run(); |
| } finally { |
| tl.setContext(old); |
| if (db != null) { |
| db.close(); |
| db = null; |
| } |
| } |
| } |
| }); |
| } catch (OrmException | IOException | QueryParseException x) { |
| log.error(x.getMessage(), x); |
| } |
| } |
| |
| private Set<String> findReviewers(List<ReviewerFilterSection> sections, |
| ChangeData changeData) throws OrmException, QueryParseException { |
| ImmutableSet.Builder<String> reviewers = ImmutableSet.builder(); |
| List<ReviewerFilterSection> found = findReviewerSections(sections, |
| changeData); |
| for (ReviewerFilterSection s : found) { |
| reviewers.addAll(s.getReviewers()); |
| } |
| return reviewers.build(); |
| } |
| |
| private List<ReviewerFilterSection> findReviewerSections( |
| List<ReviewerFilterSection> sections, ChangeData changeData) |
| throws OrmException, QueryParseException { |
| ImmutableList.Builder<ReviewerFilterSection> found = ImmutableList.builder(); |
| for (ReviewerFilterSection s : sections) { |
| if (Strings.isNullOrEmpty(s.getFilter()) |
| || s.getFilter().equals("*")) { |
| found.add(s); |
| } else if (filterMatch(s.getFilter(), changeData)) { |
| found.add(s); |
| } |
| } |
| return found.build(); |
| } |
| |
| boolean filterMatch(String filter, ChangeData changeData) |
| throws OrmException, QueryParseException { |
| Preconditions.checkNotNull(filter); |
| ChangeQueryBuilder qb = queryBuilder.asUser(user.get()); |
| Predicate<ChangeData> filterPredicate = qb.parse(filter); |
| // TODO(davido): check that the potential review can see this change |
| // by adding AND is_visible() predicate? Or is it OK to assume |
| // that reviewers always can see it? |
| return filterPredicate.asMatchable().match(changeData); |
| } |
| |
| private Set<Account> toAccounts(ReviewDb reviewDb, Set<String> in, |
| Project.NameKey p, String uploaderEMail) { |
| Set<Account> reviewers = Sets.newHashSetWithExpectedSize(in.size()); |
| GroupMembers groupMembers = null; |
| for (String r : in) { |
| try { |
| Account account = accountResolver.find(reviewDb, r); |
| if (account != null) { |
| reviewers.add(account); |
| continue; |
| } |
| } catch (OrmException e) { |
| // If the account doesn't exist, find() will return null. We only |
| // get here if something went wrong accessing the database |
| log.error("Failed to resolve account " + r, e); |
| continue; |
| } |
| if (groupMembers == null) { |
| groupMembers = |
| groupMembersFactory.create(identifiedUserFactory.create(Iterables |
| .getOnlyElement(byEmailCache.get(uploaderEMail)))); |
| } |
| try { |
| reviewers.addAll(groupMembers.listAccounts( |
| groupsCollection.get().parse(r).getGroupUUID(), p)); |
| } catch (UnprocessableEntityException | NoSuchGroupException e) { |
| log.warn(String.format( |
| "Reviewer %s is neither an account nor a group", r)); |
| } catch (NoSuchProjectException e) { |
| log.warn(String.format( |
| "Failed to list accounts for group %s and project %s", r, p)); |
| } catch (IOException | OrmException e) { |
| log.warn(String.format("Failed to list accounts for group %s", r), e); |
| } |
| } |
| return reviewers; |
| } |
| } |