// Path: src/main/java/com/spotify/dns/statistics/DnsReporter.java
// public interface DnsReporter {
//   /**
//    * Report resolve timing.
//    * @return A new timing context.
//    */
//   DnsTimingContext resolveTimer();
// 
//   /**
//    * Report that an empty response has been received from a resolve.
//    */
//   void reportEmpty();
// 
//   /**
//    * Report that a resolve resulting in a failure.
//    * @param error The exception causing the failure.
//    */
//   void reportFailure(Throwable error);
// }


import static java.util.concurrent.TimeUnit.HOURS;
import static java.util.concurrent.TimeUnit.SECONDS;
import com.spotify.dns.statistics.DnsReporter;
import java.net.UnknownHostException;
import java.time.Duration;
import java.util.List;
import java.util.concurrent.Executor;
import java.util.concurrent.ForkJoinPool;
import org.xbill.DNS.ExtendedResolver;
import org.xbill.DNS.Resolver;
/*
 * Copyright (c) 2015 Spotify AB
 *
 * 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.spotify.dns;




/**
 * Provides builders for configuring and instantiating {@link DnsSrvResolver}s.
 */
public final class DnsSrvResolvers {

  private static final int DEFAULT_DNS_TIMEOUT_SECONDS = 5;
  private static final int DEFAULT_RETENTION_DURATION_HOURS = 2;

  public static DnsSrvResolverBuilder newBuilder() {
    return new DnsSrvResolverBuilder();
  }

  public static final class DnsSrvResolverBuilder {

    private final DnsReporter reporter;
    private final boolean retainData;
    private final boolean cacheLookups;
    private final long dnsLookupTimeoutMillis;
    private final long retentionDurationMillis;
    private final List<String> servers;
    private final Executor executor;

    private DnsSrvResolverBuilder() {
      this(null,
           false,
           false,
           SECONDS.toMillis(DEFAULT_DNS_TIMEOUT_SECONDS),
           HOURS.toMillis(DEFAULT_RETENTION_DURATION_HOURS),
           null,
           null);
    }

    private DnsSrvResolverBuilder(
// Path: src/main/java/com/spotify/dns/statistics/DnsReporter.java
// public interface DnsReporter {
//   /**
//    * Report resolve timing.
//    * @return A new timing context.
//    */
//   DnsTimingContext resolveTimer();
// 
//   /**
//    * Report that an empty response has been received from a resolve.
//    */
//   void reportEmpty();
// 
//   /**
//    * Report that a resolve resulting in a failure.
//    * @param error The exception causing the failure.
//    */
//   void reportFailure(Throwable error);
// }


// Path: src/main/java/com/spotify/dns/DnsSrvResolvers.java
import static java.util.concurrent.TimeUnit.HOURS;
import static java.util.concurrent.TimeUnit.SECONDS;
import com.spotify.dns.statistics.DnsReporter;
import java.net.UnknownHostException;
import java.time.Duration;
import java.util.List;
import java.util.concurrent.Executor;
import java.util.concurrent.ForkJoinPool;
import org.xbill.DNS.ExtendedResolver;
import org.xbill.DNS.Resolver;

/*
 * Copyright (c) 2015 Spotify AB
 *
 * 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.spotify.dns;




/**
 * Provides builders for configuring and instantiating {@link DnsSrvResolver}s.
 */
public final class DnsSrvResolvers {

  private static final int DEFAULT_DNS_TIMEOUT_SECONDS = 5;
  private static final int DEFAULT_RETENTION_DURATION_HOURS = 2;

  public static DnsSrvResolverBuilder newBuilder() {
    return new DnsSrvResolverBuilder();
  }

  public static final class DnsSrvResolverBuilder {

    private final DnsReporter reporter;
    private final boolean retainData;
    private final boolean cacheLookups;
    private final long dnsLookupTimeoutMillis;
    private final long retentionDurationMillis;
    private final List<String> servers;
    private final Executor executor;

    private DnsSrvResolverBuilder() {
      this(null,
           false,
           false,
           SECONDS.toMillis(DEFAULT_DNS_TIMEOUT_SECONDS),
           HOURS.toMillis(DEFAULT_RETENTION_DURATION_HOURS),
           null,
           null);
    }

    private DnsSrvResolverBuilder(
        DnsReporter reporter,