/*
 * Copyright 2019 NAVER Corp.
 *
 * 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 com.navercorp.pinpoint.profiler.context.provider.grpc;

import com.google.inject.Inject;
import com.google.inject.Provider;
import com.navercorp.pinpoint.common.util.Assert;
import io.grpc.NameResolverProvider;
import io.grpc.internal.PinpointDnsNameResolverProvider;

import java.util.concurrent.ExecutorService;


/**
 * @author Woonduk Kang(emeroad)
 */
public class GrpcNameResolverProvider implements Provider<NameResolverProvider> {

    private final Provider<ExecutorService> dnsExecutorService;

    @Inject
    public GrpcNameResolverProvider(Provider<ExecutorService> dnsExecutorService) {
        this.dnsExecutorService = Assert.requireNonNull(dnsExecutorService, "dnsExecutorServiceProvider");
    }

    @Override
    public NameResolverProvider get() {
        ExecutorService executorService = dnsExecutorService.get();
        NameResolverProvider nameResolverProvider = new PinpointDnsNameResolverProvider("pinpoint-dns", executorService);
        return nameResolverProvider;
    }
}
