graphql.annotations.dataFetchers.connection.AsyncConnectionDataFetcher Maven / Gradle / Ivy

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/**
 * Copyright 2016 Yurii Rashkovskii
 *
 * 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
 */
package graphql.annotations.dataFetchers.connection;

import graphql.schema.DataFetcher;
import graphql.schema.DataFetchingEnvironment;

import java.util.concurrent.CompletableFuture;

import static java.util.concurrent.CompletableFuture.supplyAsync;

public class AsyncConnectionDataFetcher implements DataFetcher>> {
    private final ConnectionDataFetcher connectionDataFetcher;

    @SuppressWarnings("unchecked")
    public AsyncConnectionDataFetcher(ConnectionDataFetcher connectionFetcher) {
        this.connectionDataFetcher = connectionFetcher;
    }

    @Override
    public CompletableFuture> get(DataFetchingEnvironment environment) throws Exception {
        return supplyAsync(() -> {
            try {
                return connectionDataFetcher.get(environment);
            } catch (Exception e) {
                throw new RuntimeException("Error in AsyncConnectionDataFetcher", e);
            }
        });
    }
}