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com.google.gerrit.server.restapi.change.Files Maven / Gradle / Ivy
// 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.google.gerrit.server.restapi.change;
import com.google.common.collect.Iterables;
import com.google.common.collect.Lists;
import com.google.common.flogger.FluentLogger;
import com.google.common.hash.Hasher;
import com.google.common.hash.Hashing;
import com.google.gerrit.common.Nullable;
import com.google.gerrit.entities.Account;
import com.google.gerrit.entities.Change;
import com.google.gerrit.entities.PatchSet;
import com.google.gerrit.entities.Project;
import com.google.gerrit.extensions.api.GerritApi;
import com.google.gerrit.extensions.common.FileInfo;
import com.google.gerrit.extensions.registration.DynamicMap;
import com.google.gerrit.extensions.restapi.AuthException;
import com.google.gerrit.extensions.restapi.BadRequestException;
import com.google.gerrit.extensions.restapi.CacheControl;
import com.google.gerrit.extensions.restapi.ChildCollection;
import com.google.gerrit.extensions.restapi.ETagView;
import com.google.gerrit.extensions.restapi.IdString;
import com.google.gerrit.extensions.restapi.Response;
import com.google.gerrit.extensions.restapi.RestApiException;
import com.google.gerrit.extensions.restapi.RestView;
import com.google.gerrit.server.CurrentUser;
import com.google.gerrit.server.PatchSetUtil;
import com.google.gerrit.server.change.AccountPatchReviewStore;
import com.google.gerrit.server.change.AccountPatchReviewStore.PatchSetWithReviewedFiles;
import com.google.gerrit.server.change.FileInfoJson;
import com.google.gerrit.server.change.FileResource;
import com.google.gerrit.server.change.RevisionResource;
import com.google.gerrit.server.git.GitRepositoryManager;
import com.google.gerrit.server.patch.DiffNotAvailableException;
import com.google.gerrit.server.patch.DiffOperations;
import com.google.gerrit.server.patch.DiffOptions;
import com.google.gerrit.server.patch.PatchListKey;
import com.google.gerrit.server.patch.PatchListNotAvailableException;
import com.google.gerrit.server.patch.filediff.FileDiffOutput;
import com.google.gerrit.server.permissions.PermissionBackendException;
import com.google.gerrit.server.plugincontext.PluginItemContext;
import com.google.inject.Inject;
import com.google.inject.Provider;
import com.google.inject.Singleton;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.Set;
import java.util.concurrent.TimeUnit;
import org.eclipse.jgit.errors.RepositoryNotFoundException;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.ObjectReader;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.revwalk.RevWalk;
import org.eclipse.jgit.treewalk.TreeWalk;
import org.eclipse.jgit.treewalk.filter.PathFilterGroup;
import org.kohsuke.args4j.Option;
@Singleton
public class Files implements ChildCollection {
private final DynamicMap> views;
private final Provider list;
@Inject
Files(DynamicMap> views, Provider list) {
this.views = views;
this.list = list;
}
@Override
public DynamicMap> views() {
return views;
}
@Override
public RestView list() throws AuthException {
return list.get();
}
@Override
public FileResource parse(RevisionResource rev, IdString id) {
return new FileResource(rev, id.get());
}
public static final class ListFiles implements ETagView {
private static final FluentLogger logger = FluentLogger.forEnclosingClass();
@Option(name = "--base", metaVar = "revision-id")
String base;
@Option(name = "--parent", metaVar = "parent-number")
int parentNum;
@Option(name = "--reviewed")
boolean reviewed;
@Option(name = "-q")
String query;
private final DiffOperations diffOperations;
private final Provider self;
private final FileInfoJson fileInfoJson;
private final Revisions revisions;
private final GitRepositoryManager gitManager;
private final PatchSetUtil psUtil;
private final PluginItemContext accountPatchReviewStore;
private final GerritApi gApi;
@Inject
ListFiles(
DiffOperations diffOperations,
Provider self,
FileInfoJson fileInfoJson,
Revisions revisions,
GitRepositoryManager gitManager,
PatchSetUtil psUtil,
PluginItemContext accountPatchReviewStore,
GerritApi gApi) {
this.diffOperations = diffOperations;
this.self = self;
this.fileInfoJson = fileInfoJson;
this.revisions = revisions;
this.gitManager = gitManager;
this.psUtil = psUtil;
this.accountPatchReviewStore = accountPatchReviewStore;
this.gApi = gApi;
}
public ListFiles setReviewed(boolean r) {
this.reviewed = r;
return this;
}
@Override
public Response apply(RevisionResource resource)
throws RestApiException, RepositoryNotFoundException, IOException,
PatchListNotAvailableException, PermissionBackendException {
checkOptions();
if (reviewed) {
return Response.ok(reviewed(resource));
} else if (query != null) {
return Response.ok(query(resource));
}
Response> r;
if (base != null) {
RevisionResource baseResource =
revisions.parse(resource.getChangeResource(), IdString.fromDecoded(base));
r =
Response.ok(
fileInfoJson.getFileInfoMap(
resource.getChange(),
resource.getPatchSet().commitId(),
baseResource.getPatchSet()));
} else if (parentNum != 0) {
int parents =
gApi.changes()
.id(resource.getChange().getChangeId())
.revision(resource.getPatchSet().id().get())
.commit(false)
.parents
.size();
if (parentNum < 0 || parentNum > parents) {
throw new BadRequestException(String.format("invalid parent number: %d", parentNum));
}
r =
Response.ok(
fileInfoJson.getFileInfoMap(
resource.getChange(), resource.getPatchSet().commitId(), parentNum));
} else {
r = Response.ok(fileInfoJson.getFileInfoMap(resource.getChange(), resource.getPatchSet()));
}
if (resource.isCacheable()) {
r.caching(CacheControl.PRIVATE(7, TimeUnit.DAYS));
}
return r;
}
private void checkOptions() throws BadRequestException {
int supplied = 0;
if (base != null) {
supplied++;
}
if (parentNum > 0) {
supplied++;
}
if (reviewed) {
supplied++;
}
if (query != null) {
supplied++;
}
if (supplied > 1) {
throw new BadRequestException("cannot combine base, parent, reviewed, query");
}
}
private List query(RevisionResource resource)
throws RepositoryNotFoundException, IOException {
Project.NameKey project = resource.getChange().getProject();
try (Repository git = gitManager.openRepository(project);
ObjectReader or = git.newObjectReader();
RevWalk rw = new RevWalk(or);
TreeWalk tw = new TreeWalk(or)) {
RevCommit c = rw.parseCommit(resource.getPatchSet().commitId());
tw.addTree(c.getTree());
tw.setRecursive(true);
List paths = new ArrayList<>();
while (tw.next() && paths.size() < 20) {
String s = tw.getPathString();
if (s.contains(query)) {
paths.add(s);
}
}
return paths;
}
}
private Collection reviewed(RevisionResource resource) throws AuthException {
CurrentUser user = self.get();
if (!user.isIdentifiedUser()) {
throw new AuthException("Authentication required");
}
Account.Id userId = user.getAccountId();
PatchSet patchSetId = resource.getPatchSet();
Optional o;
o = accountPatchReviewStore.call(s -> s.findReviewed(patchSetId.id(), userId));
if (o.isPresent()) {
PatchSetWithReviewedFiles res = o.get();
if (res.patchSetId().equals(patchSetId.id())) {
return res.files();
}
try {
return copy(res.files(), res.patchSetId(), resource, userId);
} catch (IOException | DiffNotAvailableException e) {
logger.atWarning().withCause(e).log("Cannot copy patch review flags");
}
}
return Collections.emptyList();
}
private List copy(
Set paths, PatchSet.Id old, RevisionResource resource, Account.Id userId)
throws IOException, DiffNotAvailableException {
Project.NameKey project = resource.getChange().getProject();
try (Repository git = gitManager.openRepository(project);
ObjectReader reader = git.newObjectReader();
RevWalk rw = new RevWalk(reader);
TreeWalk tw = new TreeWalk(reader)) {
Change change = resource.getChange();
PatchSet patchSet = psUtil.get(resource.getNotes(), old);
if (patchSet == null) {
throw new DiffNotAvailableException(
String.format(
"patch set %s of change %s not found", old.get(), change.getId().get()));
}
Map oldList =
diffOperations.listModifiedFilesAgainstParent(
project, patchSet.commitId(), /* parentNum= */ 0, DiffOptions.DEFAULTS);
Map curList =
diffOperations.listModifiedFilesAgainstParent(
project,
resource.getPatchSet().commitId(),
/* parentNum= */ 0,
DiffOptions.DEFAULTS);
int sz = paths.size();
List pathList = Lists.newArrayListWithCapacity(sz);
tw.setFilter(PathFilterGroup.createFromStrings(paths));
tw.setRecursive(true);
int o = tw.addTree(rw.parseCommit(getNewId(oldList)).getTree());
int c = tw.addTree(rw.parseCommit(getNewId(curList)).getTree());
int op = -1;
if (getOldId(oldList) != null) {
op = tw.addTree(rw.parseTree(getOldId(oldList)));
}
int cp = -1;
if (getOldId(curList) != null) {
cp = tw.addTree(rw.parseTree(getOldId(curList)));
}
while (tw.next()) {
String path = tw.getPathString();
if (tw.getRawMode(o) != 0
&& tw.getRawMode(c) != 0
&& tw.idEqual(o, c)
&& paths.contains(path)) {
// File exists in previously reviewed oldList and in curList.
// File content is identical.
pathList.add(path);
} else if (op >= 0
&& cp >= 0
&& tw.getRawMode(o) == 0
&& tw.getRawMode(c) == 0
&& tw.getRawMode(op) != 0
&& tw.getRawMode(cp) != 0
&& tw.idEqual(op, cp)
&& paths.contains(path)) {
// File was deleted in previously reviewed oldList and curList.
// File exists in ancestor of oldList and curList.
// File content is identical in ancestors.
pathList.add(path);
}
}
accountPatchReviewStore.run(
s -> s.markReviewed(resource.getPatchSet().id(), userId, pathList));
return pathList;
}
}
public ListFiles setQuery(String query) {
this.query = query;
return this;
}
public ListFiles setBase(@Nullable String base) {
this.base = base;
return this;
}
public ListFiles setParent(int parentNum) {
this.parentNum = parentNum;
return this;
}
@Override
public String getETag(RevisionResource resource) {
Hasher h = Hashing.murmur3_128().newHasher();
resource.prepareETag(h, resource.getUser());
// File list comes from the PatchListCache, so any change to the key or value should
// invalidate ETag.
h.putLong(PatchListKey.serialVersionUID);
return h.hash().toString();
}
@Nullable
private ObjectId getOldId(Map fileDiffList) {
return fileDiffList.isEmpty()
? null
: Iterables.getFirst(fileDiffList.values(), null).oldCommitId();
}
private ObjectId getNewId(Map fileDiffList) {
return fileDiffList.isEmpty()
? null
: Iterables.getFirst(fileDiffList.values(), null).newCommitId();
}
}
}
