Line data    Source code

       1             : // Copyright (C) 2017 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.index;
      16             : 
      17             : import com.google.gerrit.extensions.events.LifecycleListener;
      18             : import com.google.gerrit.lifecycle.LifecycleModule;
      19             : import com.google.inject.Inject;
      20             : 
      21             : /** Listener to handle upgrading index schema versions at startup. */
      22             : public class OnlineUpgrader implements LifecycleListener {
      23          15 :   public static class OnlineUpgraderModule extends LifecycleModule {
      24             :     @Override
      25             :     protected void configure() {
      26          15 :       listener().to(OnlineUpgrader.class);
      27          15 :     }
      28             :   }
      29             : 
      30             :   private final VersionManager versionManager;
      31             : 
      32             :   @Inject
      33          15 :   OnlineUpgrader(VersionManager versionManager) {
      34          15 :     this.versionManager = versionManager;
      35          15 :   }
      36             : 
      37             :   @Override
      38             :   public void start() {
      39          15 :     versionManager.startOnlineUpgrade();
      40          15 :   }
      41             : 
      42             :   @Override
      43             :   public void stop() {
      44             :     // Do nothing; reindexing threadpools are shut down in another listener, and indexes are closed
      45             :     // on demand by IndexCollection.
      46          15 :   }
      47             : }