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// 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 static com.google.gerrit.extensions.conditions.BooleanCondition.and;
import static com.google.gerrit.server.update.context.RefUpdateContext.RefUpdateType.CHANGE_MODIFICATION;
import com.google.gerrit.entities.Change;
import com.google.gerrit.extensions.common.Input;
import com.google.gerrit.extensions.restapi.MethodNotAllowedException;
import com.google.gerrit.extensions.restapi.Response;
import com.google.gerrit.extensions.restapi.RestApiException;
import com.google.gerrit.extensions.restapi.RestModifyView;
import com.google.gerrit.extensions.webui.UiAction;
import com.google.gerrit.server.change.ChangeResource;
import com.google.gerrit.server.change.DeleteChangeOp;
import com.google.gerrit.server.permissions.ChangePermission;
import com.google.gerrit.server.permissions.PermissionBackend;
import com.google.gerrit.server.permissions.PermissionBackendException;
import com.google.gerrit.server.update.BatchUpdate;
import com.google.gerrit.server.update.UpdateException;
import com.google.gerrit.server.update.context.RefUpdateContext;
import com.google.gerrit.server.util.time.TimeUtil;
import com.google.inject.Inject;
import com.google.inject.Singleton;
@Singleton
public class DeleteChange
implements RestModifyView<ChangeResource, Input>, UiAction<ChangeResource> {
private final BatchUpdate.Factory updateFactory;
private final DeleteChangeOp.Factory opFactory;
@Inject
public DeleteChange(BatchUpdate.Factory updateFactory, DeleteChangeOp.Factory opFactory) {
this.updateFactory = updateFactory;
this.opFactory = opFactory;
}
@Override
public Response<Object> apply(ChangeResource rsrc, Input input)
throws RestApiException, UpdateException, PermissionBackendException {
if (!isChangeDeletable(rsrc)) {
throw new MethodNotAllowedException("delete not permitted");
}
rsrc.permissions().check(ChangePermission.DELETE);
try (RefUpdateContext ctx = RefUpdateContext.open(CHANGE_MODIFICATION)) {
try (BatchUpdate bu =
updateFactory.create(rsrc.getProject(), rsrc.getUser(), TimeUtil.now())) {
Change.Id id = rsrc.getChange().getId();
bu.addOp(id, opFactory.create(id));
bu.execute();
}
}
return Response.none();
}
@Override
public UiAction.Description getDescription(ChangeResource rsrc) {
PermissionBackend.ForChange perm = rsrc.permissions();
return new UiAction.Description()
.setLabel("Delete")
.setTitle("Delete change " + rsrc.getId())
.setVisible(and(isChangeDeletable(rsrc), perm.testCond(ChangePermission.DELETE)));
}
private static boolean isChangeDeletable(ChangeResource rsrc) {
Change change = rsrc.getChange();
if (change.isMerged()) {
// Merged changes should never be deleted.
return false;
}
// New or abandoned changes can be deleted with the right permissions.
return true;
}
}