public IndexService newIndexService( NodeEnvironment environment, IndexService.ShardStoreDeleter shardStoreDeleter, NodeServicesProvider servicesProvider) throws IOException { final IndexSettings settings = indexSettings.newWithListener(settingsConsumers); IndexSearcherWrapperFactory searcherWrapperFactory = indexSearcherWrapper.get() == null ? (shard) -> null : indexSearcherWrapper.get(); IndexEventListener eventListener = freeze(); final String storeType = settings.getSettings().get(STORE_TYPE); final IndexStore store; if (storeType == null || isBuiltinType(storeType)) { store = new IndexStore(settings, indexStoreConfig); } else { BiFunction<IndexSettings, IndexStoreConfig, IndexStore> factory = storeTypes.get(storeType); if (factory == null) { throw new IllegalArgumentException("Unknown store type [" + storeType + "]"); } store = factory.apply(settings, indexStoreConfig); if (store == null) { throw new IllegalStateException("store must not be null"); } } final String queryCacheType = settings.getSettings().get(IndexModule.QUERY_CACHE_TYPE, IndexModule.INDEX_QUERY_CACHE); final BiFunction<IndexSettings, IndicesQueryCache, QueryCache> queryCacheProvider = queryCaches.get(queryCacheType); final QueryCache queryCache = queryCacheProvider.apply(settings, servicesProvider.getIndicesQueryCache()); return new IndexService( settings, environment, new SimilarityService(settings, similarities), shardStoreDeleter, analysisRegistry, engineFactory.get(), servicesProvider, queryCache, store, eventListener, searcherWrapperFactory); }