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// Copyright (C) 2012 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.base.Strings;
import com.google.gerrit.extensions.api.changes.TopicInput;
import com.google.gerrit.extensions.restapi.BadRequestException;
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.ChangeUtil;
import com.google.gerrit.server.change.ChangeResource;
import com.google.gerrit.server.change.SetTopicOp;
import com.google.gerrit.server.permissions.ChangePermission;
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.util.time.TimeUtil;
import com.google.inject.Inject;
import com.google.inject.Singleton;
@Singleton
public class PutTopic
implements RestModifyView<ChangeResource, TopicInput>, UiAction<ChangeResource> {
private final BatchUpdate.Factory updateFactory;
private final SetTopicOp.Factory topicOpFactory;
@Inject
PutTopic(BatchUpdate.Factory updateFactory, SetTopicOp.Factory topicOpFactory) {
this.updateFactory = updateFactory;
this.topicOpFactory = topicOpFactory;
}
@Override
public Response<String> apply(ChangeResource req, TopicInput input)
throws UpdateException, RestApiException, PermissionBackendException {
req.permissions().check(ChangePermission.EDIT_TOPIC_NAME);
if (input != null
&& input.topic != null
&& input.topic.length() > ChangeUtil.TOPIC_MAX_LENGTH) {
throw new BadRequestException(
String.format("topic length exceeds the limit (%s)", ChangeUtil.TOPIC_MAX_LENGTH));
}
TopicInput sanitizedInput = input == null ? new TopicInput() : input;
if (sanitizedInput.topic != null) {
sanitizedInput.topic = sanitizedInput.topic.trim();
}
SetTopicOp op = topicOpFactory.create(sanitizedInput.topic);
try (BatchUpdate u =
updateFactory.create(req.getChange().getProject(), req.getUser(), TimeUtil.now())) {
u.addOp(req.getId(), op);
u.execute();
}
if (Strings.isNullOrEmpty(sanitizedInput.topic)) {
return Response.none();
}
return Response.ok(sanitizedInput.topic);
}
@Override
public UiAction.Description getDescription(ChangeResource rsrc) {
return new UiAction.Description()
.setLabel("Edit Topic")
.setVisible(rsrc.permissions().testCond(ChangePermission.EDIT_TOPIC_NAME));
}
}