1 /* 2 * Copyright (C) 2012 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.idegen; 18 19 import com.google.common.base.Preconditions; 20 import com.google.common.collect.Maps; 21 import com.google.common.collect.Sets; 22 23 import java.io.File; 24 import java.io.IOException; 25 import java.util.HashMap; 26 import java.util.Set; 27 import java.util.logging.Logger; 28 29 /** 30 * Cache to hold built modules. 31 */ 32 public class ModuleCache { 33 34 private static final Logger logger = Logger.getLogger(ModuleCache.class.getName()); 35 36 private static ModuleCache cache = new ModuleCache(); 37 38 ModuleIndexes indexes; 39 40 HashMap<String, Module> modulesByName = Maps.newHashMap(); 41 ModuleCache()42 private ModuleCache() { 43 } 44 getInstance()45 public static ModuleCache getInstance() { 46 return cache; 47 } 48 init(File indexFile)49 public void init(File indexFile) throws IOException { 50 indexes = new ModuleIndexes(indexFile); 51 indexes.build(); 52 } 53 getAndCache(String moduleName)54 public Module getAndCache(String moduleName) throws IOException { 55 Preconditions.checkState(indexes != null, "You must call init() first."); 56 57 Module module = modulesByName.get(moduleName); 58 if (module == null) { 59 String makeFile = indexes.getMakeFile(moduleName); 60 if (makeFile == null) { 61 logger.warning("Unable to find make file for module: " + moduleName); 62 } else { 63 module = new StandardModule(moduleName, makeFile); 64 module.build(); 65 modulesByName.put(moduleName, module); 66 } 67 } 68 return module; 69 } 70 buildAndCacheAggregatedModule(String moduleName)71 public void buildAndCacheAggregatedModule(String moduleName) throws IOException { 72 if (indexes.isPartOfAggregatedModule(moduleName)) { 73 Set<String> moduleNames = indexes.getAggregatedModules(moduleName); 74 Set<Module> modules = Sets.newHashSet(); 75 for (String name : moduleNames) { 76 Module m = modulesByName.get(name); 77 if (m != null) { 78 modules.add(m); 79 } 80 } 81 String aggregatedName = indexes.getAggregateName(moduleName); 82 AggregatedModule module = new AggregatedModule(aggregatedName, modules); 83 module.build(); 84 modulesByName.put(aggregatedName, module); 85 } 86 } 87 getModules()88 public Iterable<Module> getModules() { 89 return modulesByName.values(); 90 } 91 getMakeFile(String moduleName)92 public String getMakeFile(String moduleName) { 93 return indexes.getMakeFile(moduleName); 94 } 95 put(StandardModule module)96 public void put(StandardModule module) { 97 Preconditions.checkNotNull(module); 98 modulesByName.put(module.getName(), module); 99 } 100 getAggregateReplacementName(String moduleName)101 public String getAggregateReplacementName(String moduleName) { 102 if (indexes.isPartOfAggregatedModule(moduleName)) { 103 return indexes.getAggregateName(moduleName); 104 } 105 return null; 106 } 107 } 108