Line data    Source code

       1             : // Copyright (C) 2018 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.index.IndexConfig;
      18             : import com.google.gerrit.index.project.ProjectIndex;
      19             : import com.google.gerrit.lifecycle.LifecycleModule;
      20             : import com.google.gerrit.server.config.GerritServerConfig;
      21             : import com.google.gerrit.server.index.account.AccountIndex;
      22             : import com.google.gerrit.server.index.change.ChangeIndex;
      23             : import com.google.gerrit.server.index.group.GroupIndex;
      24             : import com.google.inject.AbstractModule;
      25             : import com.google.inject.Provides;
      26             : import com.google.inject.Singleton;
      27             : import com.google.inject.assistedinject.FactoryModuleBuilder;
      28             : import java.util.Map;
      29             : import org.eclipse.jgit.lib.Config;
      30             : 
      31             : /**
      32             :  * Base class to establish implementation-independent index bindings. To be subclassed by concrete
      33             :  * index implementations, such as {@link com.google.gerrit.lucene.LuceneIndexModule}.
      34             :  */
      35             : public abstract class AbstractIndexModule extends AbstractModule {
      36             :   public static final String INDEX_MODULE = "index-module";
      37             : 
      38             :   private final int threads;
      39             :   private final Map<String, Integer> singleVersions;
      40             :   private final boolean slave;
      41             : 
      42         152 :   protected AbstractIndexModule(Map<String, Integer> singleVersions, int threads, boolean slave) {
      43         152 :     this.singleVersions = singleVersions;
      44         152 :     this.threads = threads;
      45         152 :     this.slave = slave;
      46         152 :   }
      47             : 
      48             :   @Override
      49             :   protected void configure() {
      50         152 :     if (slave) {
      51           1 :       bind(AccountIndex.Factory.class)
      52           1 :           .toInstance(
      53             :               s -> {
      54           0 :                 throw new UnsupportedOperationException();
      55             :               });
      56           1 :       bind(ChangeIndex.Factory.class)
      57           1 :           .toInstance(
      58             :               s -> {
      59           0 :                 throw new UnsupportedOperationException();
      60             :               });
      61           1 :       bind(ProjectIndex.Factory.class)
      62           1 :           .toInstance(
      63             :               s -> {
      64           0 :                 throw new UnsupportedOperationException();
      65             :               });
      66             :     } else {
      67         152 :       install(
      68             :           new FactoryModuleBuilder()
      69         152 :               .implement(AccountIndex.class, getAccountIndex())
      70         152 :               .build(AccountIndex.Factory.class));
      71         152 :       install(
      72             :           new FactoryModuleBuilder()
      73         152 :               .implement(ChangeIndex.class, getChangeIndex())
      74         152 :               .build(ChangeIndex.Factory.class));
      75         152 :       install(
      76             :           new FactoryModuleBuilder()
      77         152 :               .implement(ProjectIndex.class, getProjectIndex())
      78         152 :               .build(ProjectIndex.Factory.class));
      79             :     }
      80         152 :     install(
      81             :         new FactoryModuleBuilder()
      82         152 :             .implement(GroupIndex.class, getGroupIndex())
      83         152 :             .build(GroupIndex.Factory.class));
      84             : 
      85         152 :     install(new IndexModule(threads, slave));
      86         152 :     if (singleVersions == null) {
      87         138 :       install(new MultiVersionModule());
      88             :     } else {
      89          32 :       install(new SingleVersionModule(singleVersions));
      90             :     }
      91         152 :   }
      92             : 
      93             :   protected abstract Class<? extends AccountIndex> getAccountIndex();
      94             : 
      95             :   protected abstract Class<? extends ChangeIndex> getChangeIndex();
      96             : 
      97             :   protected abstract Class<? extends GroupIndex> getGroupIndex();
      98             : 
      99             :   protected abstract Class<? extends ProjectIndex> getProjectIndex();
     100             : 
     101             :   protected abstract Class<? extends VersionManager> getVersionManager();
     102             : 
     103             :   @Provides
     104             :   @Singleton
     105             :   IndexConfig provideIndexConfig(@GerritServerConfig Config cfg) {
     106         151 :     return getIndexConfig(cfg);
     107             :   }
     108             : 
     109             :   protected IndexConfig getIndexConfig(@GerritServerConfig Config cfg) {
     110         151 :     return IndexConfig.fromConfig(cfg).separateChangeSubIndexes(true).build();
     111             :   }
     112             : 
     113         138 :   private class MultiVersionModule extends LifecycleModule {
     114             :     @Override
     115             :     public void configure() {
     116         138 :       Class<? extends VersionManager> versionManagerClass = getVersionManager();
     117         138 :       bind(VersionManager.class).to(versionManagerClass);
     118         138 :       listener().to(versionManagerClass);
     119         138 :     }
     120             :   }
     121             : }