Line data    Source code

       1             : // Copyright (C) 2012 The Android Open Source Project
       2             : //
       3             : // Licensed under the Apache License, Version 2.0 (the "License");
       4             : // you may not use this file except in compliance with the License.
       5             : // You may obtain a copy of the License at
       6             : //
       7             : // http://www.apache.org/licenses/LICENSE-2.0
       8             : //
       9             : // Unless required by applicable law or agreed to in writing, software
      10             : // distributed under the License is distributed on an "AS IS" BASIS,
      11             : // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      12             : // See the License for the specific language governing permissions and
      13             : // limitations under the License.
      14             : 
      15             : package com.google.gerrit.server.change;
      16             : 
      17             : import com.google.common.base.Strings;
      18             : import com.google.gerrit.common.Nullable;
      19             : import com.google.gerrit.entities.Change;
      20             : import com.google.gerrit.extensions.restapi.BadRequestException;
      21             : import com.google.gerrit.server.ChangeMessagesUtil;
      22             : import com.google.gerrit.server.extensions.events.TopicEdited;
      23             : import com.google.gerrit.server.notedb.ChangeUpdate;
      24             : import com.google.gerrit.server.update.BatchUpdateOp;
      25             : import com.google.gerrit.server.update.ChangeContext;
      26             : import com.google.gerrit.server.update.PostUpdateContext;
      27             : import com.google.gerrit.server.validators.ValidationException;
      28             : import com.google.inject.Inject;
      29             : import com.google.inject.assistedinject.Assisted;
      30             : 
      31             : public class SetTopicOp implements BatchUpdateOp {
      32             :   public interface Factory {
      33             :     SetTopicOp create(@Nullable String topic);
      34             :   }
      35             : 
      36             :   private final String topic;
      37             :   private final TopicEdited topicEdited;
      38             :   private final ChangeMessagesUtil cmUtil;
      39             : 
      40             :   private Change change;
      41             :   private String oldTopicName;
      42             :   private String newTopicName;
      43             : 
      44             :   @Inject
      45             :   public SetTopicOp(
      46          30 :       TopicEdited topicEdited, ChangeMessagesUtil cmUtil, @Nullable @Assisted String topic) {
      47          30 :     this.topic = topic;
      48          30 :     this.topicEdited = topicEdited;
      49          30 :     this.cmUtil = cmUtil;
      50          30 :   }
      51             : 
      52             :   @Override
      53             :   public boolean updateChange(ChangeContext ctx) throws BadRequestException {
      54          30 :     change = ctx.getChange();
      55          30 :     ChangeUpdate update = ctx.getUpdate(change.currentPatchSetId());
      56          30 :     newTopicName = Strings.nullToEmpty(topic);
      57          30 :     oldTopicName = Strings.nullToEmpty(change.getTopic());
      58          30 :     if (oldTopicName.equals(newTopicName)) {
      59          23 :       return false;
      60             :     }
      61             : 
      62             :     String summary;
      63          12 :     if (oldTopicName.isEmpty()) {
      64          12 :       summary = "Topic set to " + newTopicName;
      65           4 :     } else if (newTopicName.isEmpty()) {
      66           2 :       summary = "Topic " + oldTopicName + " removed";
      67             :     } else {
      68           3 :       summary = String.format("Topic changed from %s to %s", oldTopicName, newTopicName);
      69             :     }
      70          12 :     change.setTopic(Strings.emptyToNull(newTopicName));
      71             :     try {
      72          12 :       update.setTopic(change.getTopic());
      73           1 :     } catch (ValidationException ex) {
      74           1 :       throw new BadRequestException(ex.getMessage());
      75          12 :     }
      76          12 :     cmUtil.setChangeMessage(ctx, summary, ChangeMessagesUtil.TAG_SET_TOPIC);
      77          12 :     return true;
      78             :   }
      79             : 
      80             :   @Override
      81             :   public void postUpdate(PostUpdateContext ctx) {
      82          30 :     if (change != null) {
      83          30 :       topicEdited.fire(ctx.getChangeData(change), ctx.getAccount(), oldTopicName, ctx.getWhen());
      84             :     }
      85          30 :   }
      86             : }