| // Copyright (C) 2010 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.git.receive; |
| |
| import com.google.auto.value.AutoValue; |
| import com.google.common.annotations.VisibleForTesting; |
| import com.google.common.collect.ImmutableSet; |
| import com.google.common.collect.Maps; |
| import com.google.common.collect.Sets; |
| import com.google.gerrit.reviewdb.client.PatchSet; |
| import com.google.gerrit.reviewdb.client.Project; |
| import com.google.gerrit.reviewdb.client.RefNames; |
| import com.google.gerrit.server.index.change.ChangeField; |
| import com.google.gerrit.server.query.change.ChangeData; |
| import com.google.gerrit.server.query.change.InternalChangeQuery; |
| import com.google.gerrit.server.util.MagicBranch; |
| import com.google.gwtorm.server.OrmException; |
| import com.google.inject.Provider; |
| import java.util.Collections; |
| import java.util.Map; |
| import java.util.Set; |
| import org.eclipse.jgit.lib.ObjectId; |
| import org.eclipse.jgit.lib.Ref; |
| import org.eclipse.jgit.transport.AdvertiseRefsHook; |
| import org.eclipse.jgit.transport.BaseReceivePack; |
| import org.eclipse.jgit.transport.ServiceMayNotContinueException; |
| import org.eclipse.jgit.transport.UploadPack; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** Exposes only the non refs/changes/ reference names. */ |
| public class ReceiveCommitsAdvertiseRefsHook implements AdvertiseRefsHook { |
| private static final Logger log = LoggerFactory.getLogger(ReceiveCommitsAdvertiseRefsHook.class); |
| |
| @VisibleForTesting |
| @AutoValue |
| public abstract static class Result { |
| public abstract Map<String, Ref> allRefs(); |
| |
| public abstract Set<ObjectId> additionalHaves(); |
| } |
| |
| private final Provider<InternalChangeQuery> queryProvider; |
| private final Project.NameKey projectName; |
| |
| public ReceiveCommitsAdvertiseRefsHook( |
| Provider<InternalChangeQuery> queryProvider, Project.NameKey projectName) { |
| this.queryProvider = queryProvider; |
| this.projectName = projectName; |
| } |
| |
| @Override |
| public void advertiseRefs(UploadPack us) { |
| throw new UnsupportedOperationException( |
| "ReceiveCommitsAdvertiseRefsHook cannot be used for UploadPack"); |
| } |
| |
| @Override |
| public void advertiseRefs(BaseReceivePack rp) throws ServiceMayNotContinueException { |
| Result r = advertiseRefs(HookUtil.ensureAllRefsAdvertised(rp)); |
| rp.setAdvertisedRefs(r.allRefs(), r.additionalHaves()); |
| } |
| |
| @VisibleForTesting |
| public Result advertiseRefs(Map<String, Ref> oldRefs) { |
| Map<String, Ref> r = Maps.newHashMapWithExpectedSize(oldRefs.size()); |
| Set<ObjectId> allPatchSets = Sets.newHashSetWithExpectedSize(oldRefs.size()); |
| for (Map.Entry<String, Ref> e : oldRefs.entrySet()) { |
| String name = e.getKey(); |
| if (!skip(name)) { |
| r.put(name, e.getValue()); |
| } |
| if (name.startsWith(RefNames.REFS_CHANGES)) { |
| allPatchSets.add(e.getValue().getObjectId()); |
| } |
| } |
| return new AutoValue_ReceiveCommitsAdvertiseRefsHook_Result( |
| r, advertiseOpenChanges(allPatchSets)); |
| } |
| |
| private static final ImmutableSet<String> OPEN_CHANGES_FIELDS = |
| ImmutableSet.of( |
| // Required for ChangeIsVisibleToPrdicate. |
| ChangeField.CHANGE.getName(), |
| ChangeField.REVIEWER.getName(), |
| // Required during advertiseOpenChanges. |
| ChangeField.PATCH_SET.getName()); |
| |
| private Set<ObjectId> advertiseOpenChanges(Set<ObjectId> allPatchSets) { |
| // Advertise some recent open changes, in case a commit is based on one. |
| int limit = 32; |
| try { |
| Set<ObjectId> r = Sets.newHashSetWithExpectedSize(limit); |
| for (ChangeData cd : |
| queryProvider |
| .get() |
| .setRequestedFields(OPEN_CHANGES_FIELDS) |
| .enforceVisibility(true) |
| .setLimit(limit) |
| .byProjectOpen(projectName)) { |
| PatchSet ps = cd.currentPatchSet(); |
| if (ps != null) { |
| ObjectId id = ObjectId.fromString(ps.getRevision().get()); |
| // Ensure we actually observed a patch set ref pointing to this |
| // object, in case the database is out of sync with the repo and the |
| // object doesn't actually exist. |
| if (allPatchSets.contains(id)) { |
| r.add(id); |
| } |
| } |
| } |
| return r; |
| } catch (OrmException err) { |
| log.error("Cannot list open changes of " + projectName, err); |
| return Collections.emptySet(); |
| } |
| } |
| |
| private static boolean skip(String name) { |
| return name.startsWith(RefNames.REFS_CHANGES) |
| || name.startsWith(RefNames.REFS_CACHE_AUTOMERGE) |
| || MagicBranch.isMagicBranch(name); |
| } |
| } |