| // Copyright (C) 2014 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; |
| |
| import static com.google.common.base.Preconditions.checkArgument; |
| import static java.util.Objects.requireNonNull; |
| |
| import com.google.common.collect.HashBasedTable; |
| import com.google.common.collect.ListMultimap; |
| import com.google.common.collect.Table; |
| import com.google.gerrit.common.Nullable; |
| import com.google.gerrit.common.data.LabelType; |
| import com.google.gerrit.exceptions.StorageException; |
| import com.google.gerrit.extensions.client.ChangeKind; |
| import com.google.gerrit.reviewdb.client.Account; |
| import com.google.gerrit.reviewdb.client.PatchSet; |
| import com.google.gerrit.reviewdb.client.PatchSetApproval; |
| import com.google.gerrit.server.change.ChangeKindCache; |
| import com.google.gerrit.server.change.LabelNormalizer; |
| import com.google.gerrit.server.notedb.ChangeNotes; |
| import com.google.gerrit.server.project.ProjectCache; |
| import com.google.gerrit.server.project.ProjectState; |
| import com.google.gerrit.server.query.change.ChangeData; |
| import com.google.inject.Inject; |
| import com.google.inject.Singleton; |
| import java.io.IOException; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.TreeMap; |
| import org.eclipse.jgit.lib.Config; |
| import org.eclipse.jgit.revwalk.RevWalk; |
| |
| /** |
| * Copies approvals between patch sets. |
| * |
| * <p>The result of a copy may either be stored, as when stamping approvals in the database at |
| * submit time, or refreshed on demand, as when reading approvals from the NoteDb. |
| */ |
| @Singleton |
| public class ApprovalCopier { |
| private final ProjectCache projectCache; |
| private final ChangeKindCache changeKindCache; |
| private final LabelNormalizer labelNormalizer; |
| private final ChangeData.Factory changeDataFactory; |
| private final PatchSetUtil psUtil; |
| |
| @Inject |
| ApprovalCopier( |
| ProjectCache projectCache, |
| ChangeKindCache changeKindCache, |
| LabelNormalizer labelNormalizer, |
| ChangeData.Factory changeDataFactory, |
| PatchSetUtil psUtil) { |
| this.projectCache = projectCache; |
| this.changeKindCache = changeKindCache; |
| this.labelNormalizer = labelNormalizer; |
| this.changeDataFactory = changeDataFactory; |
| this.psUtil = psUtil; |
| } |
| |
| Iterable<PatchSetApproval> getForPatchSet( |
| ChangeNotes notes, PatchSet.Id psId, @Nullable RevWalk rw, @Nullable Config repoConfig) { |
| |
| PatchSet ps = psUtil.get(notes, psId); |
| if (ps == null) { |
| return Collections.emptyList(); |
| } |
| |
| ChangeData cd = changeDataFactory.create(notes); |
| try { |
| ProjectState project = projectCache.checkedGet(cd.change().getDest().project()); |
| ListMultimap<PatchSet.Id, PatchSetApproval> all = cd.approvals(); |
| requireNonNull(all, "all should not be null"); |
| |
| Table<String, Account.Id, PatchSetApproval> byUser = HashBasedTable.create(); |
| for (PatchSetApproval psa : all.get(ps.id())) { |
| byUser.put(psa.label(), psa.accountId(), psa); |
| } |
| |
| TreeMap<Integer, PatchSet> patchSets = getPatchSets(cd); |
| |
| Table<String, Account.Id, PatchSetApproval> wontCopy = HashBasedTable.create(); |
| |
| // Walk patch sets strictly less than current in descending order. |
| Collection<PatchSet> allPrior = |
| patchSets.descendingMap().tailMap(ps.id().get(), false).values(); |
| for (PatchSet priorPs : allPrior) { |
| List<PatchSetApproval> priorApprovals = all.get(priorPs.id()); |
| if (priorApprovals.isEmpty()) { |
| continue; |
| } |
| |
| ChangeKind kind = |
| changeKindCache.getChangeKind( |
| project.getNameKey(), rw, repoConfig, priorPs.commitId(), ps.commitId()); |
| |
| for (PatchSetApproval psa : priorApprovals) { |
| if (wontCopy.contains(psa.label(), psa.accountId())) { |
| continue; |
| } |
| if (byUser.contains(psa.label(), psa.accountId())) { |
| continue; |
| } |
| if (!canCopy(project, psa, ps.id(), kind)) { |
| wontCopy.put(psa.label(), psa.accountId(), psa); |
| continue; |
| } |
| byUser.put(psa.label(), psa.accountId(), psa.copyWithPatchSet(ps.id())); |
| } |
| } |
| return labelNormalizer.normalize(notes, byUser.values()).getNormalized(); |
| } catch (IOException e) { |
| throw new StorageException(e); |
| } |
| } |
| |
| private static TreeMap<Integer, PatchSet> getPatchSets(ChangeData cd) { |
| Collection<PatchSet> patchSets = cd.patchSets(); |
| TreeMap<Integer, PatchSet> result = new TreeMap<>(); |
| for (PatchSet ps : patchSets) { |
| result.put(ps.id().get(), ps); |
| } |
| return result; |
| } |
| |
| private static boolean canCopy( |
| ProjectState project, PatchSetApproval psa, PatchSet.Id psId, ChangeKind kind) { |
| int n = psa.key().patchSetId().get(); |
| checkArgument(n != psId.get()); |
| LabelType type = project.getLabelTypes().byLabel(psa.labelId()); |
| if (type == null) { |
| return false; |
| } else if ((type.isCopyMinScore() && type.isMaxNegative(psa)) |
| || (type.isCopyMaxScore() && type.isMaxPositive(psa))) { |
| return true; |
| } |
| switch (kind) { |
| case MERGE_FIRST_PARENT_UPDATE: |
| return type.isCopyAllScoresOnMergeFirstParentUpdate(); |
| case NO_CODE_CHANGE: |
| return type.isCopyAllScoresIfNoCodeChange(); |
| case TRIVIAL_REBASE: |
| return type.isCopyAllScoresOnTrivialRebase(); |
| case NO_CHANGE: |
| return type.isCopyAllScoresIfNoChange() |
| || type.isCopyAllScoresOnTrivialRebase() |
| || type.isCopyAllScoresOnMergeFirstParentUpdate() |
| || type.isCopyAllScoresIfNoCodeChange(); |
| case REWORK: |
| default: |
| return false; |
| } |
| } |
| } |