io.datarouter.graphql.loader.GraphQlDataLoaderService Maven / Gradle / Ivy
/*
* Copyright © 2009 HotPads ([email protected])
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.datarouter.graphql.loader;
import java.util.Map;
import io.datarouter.graphql.config.DatarouterGraphQlExecutors.DataLoaderExecutor;
import io.datarouter.graphql.fetcher.BaseDataLoaderFetcher;
import io.datarouter.graphql.fetcher.DatarouterDataFetcher;
import io.datarouter.graphql.service.GraphQlDataLoaderConfig;
import io.datarouter.graphql.web.GraphQlBaseHandler;
import io.datarouter.graphql.web.GraphQlFetcherRegistry;
import io.datarouter.inject.DatarouterInjector;
import jakarta.inject.Inject;
import jakarta.inject.Singleton;
@Singleton
public class GraphQlDataLoaderService{
@Inject
private DatarouterInjector injector;
@Inject
private DataLoaderExecutor executor;
public GraphQlDataLoaderConfig buildDataloaderConfig(Class handlerClass){
GraphQlBaseHandler handler = injector.getInstance(handlerClass);
GraphQlFetcherRegistry fetcherRegistry = injector.getInstance(handler.fetcherRegistry());
Map>,DatarouterDataLoaderWrapper>
fetcherClassToLoaders = fetcherRegistry
.scanDataFetcherClasses()
.include(BaseDataLoaderFetcher.class::isAssignableFrom)
.toMap(fetcherClass -> fetcherClass, fetcherClass -> {
@SuppressWarnings("unchecked")
DatarouterBatchLoader batchedService = buildDataLoaderBatchedServiceInstance(
(Class>)fetcherClass);
return DatarouterDataLoaderWrapper.wrap(batchedService, executor);
});
return new GraphQlDataLoaderConfig(fetcherClassToLoaders);
}
private DatarouterBatchLoader buildDataLoaderBatchedServiceInstance(
Class> fetcherClass){
BaseDataLoaderFetcher loader = injector.getInstance(fetcherClass);
Class> batchService = loader.getBatchLoaderClass();
return injector.getInstance(batchService);
}
}