1 /*
2 * Copyright 2017 The Netty Project
3 *
4 * The Netty Project licenses this file to you under the Apache License,
5 * version 2.0 (the "License"); you may not use this file except in compliance
6 * with the License. You may obtain a copy of the License at:
7 *
8 * https://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13 * License for the specific language governing permissions and limitations
14 * under the License.
15 */
16 package io.netty.resolver.dns;
17
18 import io.netty.handler.codec.dns.DnsQuestion;
19
20 /**
21 * Used to generate new instances of {@link DnsQueryLifecycleObserver}.
22 */
23 public interface DnsQueryLifecycleObserverFactory {
24 /**
25 * Create a new instance of a {@link DnsQueryLifecycleObserver}. This will be called at the start of a new query.
26 * @param question The question being asked.
27 * @return a new instance of a {@link DnsQueryLifecycleObserver}.
28 */
29 DnsQueryLifecycleObserver newDnsQueryLifecycleObserver(DnsQuestion question);
30 }