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// 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.change;
import static com.google.gerrit.extensions.api.changes.SubmittedTogetherOption.NON_VISIBLE_CHANGES;
import com.google.gerrit.extensions.api.changes.SubmittedTogetherInfo;
import com.google.gerrit.extensions.api.changes.SubmittedTogetherOption;
import com.google.gerrit.extensions.client.ChangeStatus;
import com.google.gerrit.extensions.client.ListChangesOption;
import com.google.gerrit.extensions.restapi.AuthException;
import com.google.gerrit.extensions.restapi.BadRequestException;
import com.google.gerrit.extensions.restapi.ResourceConflictException;
import com.google.gerrit.extensions.restapi.RestReadView;
import com.google.gerrit.reviewdb.client.Change;
import com.google.gerrit.reviewdb.server.ReviewDb;
import com.google.gerrit.server.change.WalkSorter.PatchSetData;
import com.google.gerrit.server.git.ChangeSet;
import com.google.gerrit.server.git.MergeSuperSet;
import com.google.gerrit.server.permissions.PermissionBackendException;
import com.google.gerrit.server.query.change.ChangeData;
import com.google.gerrit.server.query.change.InternalChangeQuery;
import com.google.gwtorm.server.OrmException;
import com.google.inject.Inject;
import com.google.inject.Provider;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.EnumSet;
import java.util.List;
import org.kohsuke.args4j.Option;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class SubmittedTogether implements RestReadView<ChangeResource> {
private static final Logger log = LoggerFactory.getLogger(SubmittedTogether.class);
private final EnumSet<SubmittedTogetherOption> options =
EnumSet.noneOf(SubmittedTogetherOption.class);
private final EnumSet<ListChangesOption> jsonOpt =
EnumSet.of(
ListChangesOption.CURRENT_REVISION,
ListChangesOption.CURRENT_COMMIT,
ListChangesOption.SUBMITTABLE);
private final ChangeJson.Factory json;
private final Provider<ReviewDb> dbProvider;
private final Provider<InternalChangeQuery> queryProvider;
private final Provider<MergeSuperSet> mergeSuperSet;
private final Provider<WalkSorter> sorter;
@Option(name = "-o", usage = "Output options")
void addOption(String option) {
for (ListChangesOption o : ListChangesOption.values()) {
if (o.name().equalsIgnoreCase(option)) {
jsonOpt.add(o);
return;
}
}
for (SubmittedTogetherOption o : SubmittedTogetherOption.values()) {
if (o.name().equalsIgnoreCase(option)) {
options.add(o);
return;
}
}
throw new IllegalArgumentException("option not recognized: " + option);
}
@Inject
SubmittedTogether(
ChangeJson.Factory json,
Provider<ReviewDb> dbProvider,
Provider<InternalChangeQuery> queryProvider,
Provider<MergeSuperSet> mergeSuperSet,
Provider<WalkSorter> sorter) {
this.json = json;
this.dbProvider = dbProvider;
this.queryProvider = queryProvider;
this.mergeSuperSet = mergeSuperSet;
this.sorter = sorter;
}
public SubmittedTogether addListChangesOption(EnumSet<ListChangesOption> o) {
jsonOpt.addAll(o);
return this;
}
public SubmittedTogether addSubmittedTogetherOption(EnumSet<SubmittedTogetherOption> o) {
options.addAll(o);
return this;
}
@Override
public Object apply(ChangeResource resource)
throws AuthException, BadRequestException, ResourceConflictException, IOException,
OrmException, PermissionBackendException {
SubmittedTogetherInfo info = applyInfo(resource);
if (options.isEmpty()) {
return info.changes;
}
return info;
}
public SubmittedTogetherInfo applyInfo(ChangeResource resource)
throws AuthException, IOException, OrmException, PermissionBackendException {
Change c = resource.getChange();
try {
List<ChangeData> cds;
int hidden;
if (c.getStatus().isOpen()) {
ChangeSet cs =
mergeSuperSet.get().completeChangeSet(dbProvider.get(), c, resource.getUser());
cds = cs.changes().asList();
hidden = cs.nonVisibleChanges().size();
} else if (c.getStatus().asChangeStatus() == ChangeStatus.MERGED) {
cds = queryProvider.get().bySubmissionId(c.getSubmissionId());
hidden = 0;
} else {
cds = Collections.emptyList();
hidden = 0;
}
if (hidden != 0 && !options.contains(NON_VISIBLE_CHANGES)) {
throw new AuthException("change would be submitted with a change that you cannot see");
}
if (cds.size() <= 1 && hidden == 0) {
cds = Collections.emptyList();
} else {
// Skip sorting for singleton lists, to avoid WalkSorter opening the
// repo just to fill out the commit field in PatchSetData.
cds = sort(cds);
}
SubmittedTogetherInfo info = new SubmittedTogetherInfo();
info.changes = json.create(jsonOpt).formatChangeDatas(cds);
info.nonVisibleChanges = hidden;
return info;
} catch (OrmException | IOException e) {
log.error("Error on getting a ChangeSet", e);
throw e;
}
}
private List<ChangeData> sort(List<ChangeData> cds) throws OrmException, IOException {
List<ChangeData> sorted = new ArrayList<>(cds.size());
for (PatchSetData psd : sorter.get().sort(cds)) {
sorted.add(psd.data());
}
return sorted;
}
}
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