/*
* Copyright (C) 2015 SoftIndex LLC.
*
* 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.datakernel.dns;
import io.datakernel.dns.DnsMessage.ResponseErrorCode;
import java.net.InetAddress;
final class CachedDnsLookupResult {
private final String domainName;
private final InetAddress[] ips;
private final long expirationSecond;
private final ResponseErrorCode errorCode;
private final Short type;
private CachedDnsLookupResult(String domainName, InetAddress[] ips, Long expirationSecond,
ResponseErrorCode errorCode, Short type) {
this.domainName = domainName;
this.ips = ips;
this.expirationSecond = expirationSecond;
this.errorCode = errorCode;
this.type = type;
}
/**
* Creates a new CachedDnsLookupResult from DnsQueryResult
*
* @param queryResult result which was received from DNS server
* @param expirationSecond time to live for this record
* @return new CachedDnsLookupResult
*/
public static CachedDnsLookupResult fromQueryWithExpiration(DnsQueryResult queryResult, long expirationSecond) {
return new CachedDnsLookupResult(queryResult.getDomainName(), queryResult.getIps(), expirationSecond,
queryResult.getErrorCode(), queryResult.getType());
}
/**
* Creates a new CachedDnsLookupResult from DnsException
*
* @param exception exception which was received from DNS server
* @param expirationSecond time to live for this record
* @return new CachedDnsLookupResult
*/
public static CachedDnsLookupResult fromExceptionWithExpiration(DnsException exception, long expirationSecond) {
return new CachedDnsLookupResult(exception.getDomainName(), null, expirationSecond, exception.getErrorCode(),
null);
}
public DnsException getException() {
return !isSuccessful() ? new DnsException(domainName, errorCode) : null;
}
public String getDomainName() {
return domainName;
}
public InetAddress[] getIps() {
return ips;
}
public ResponseErrorCode getErrorCode() {
return errorCode;
}
public boolean isSuccessful() {
return errorCode == ResponseErrorCode.NO_ERROR;
}
public long getExpirationSecond() {
return expirationSecond;
}
public Short getType() {
return type;
}
}