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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.provision.persistence;
import java.util.Optional;
import java.util.Set;
/**
* Interface for a basic DNS name resolver.
*
* @author mpolden
*/
public interface NameResolver {
/** Resolve {@link RecordType#A} and {@link RecordType#AAAA} records for given name */
Set<String> resolveAll(String name);
/** Resolve given record type(s) for given name */
Set<String> resolve(String name, RecordType first, RecordType... rest);
/** Resolve hostname from given IP address, if any exist */
Optional<String> resolveHostname(String ipAddress);
/** DNS record types */
enum RecordType {
A("A", "IPv4 address"),
AAAA("AAAA", "IPv6 address");
private final String value;
private final String description;
public String value() { return value; }
public String description() { return description; }
RecordType(String value, String description) {
this.value = value;
this.description = description;
}
}
}
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