b874edbf65
Motivation: At the moment DefaultDnsCache will expire each record dependong on its own TTL. This may result in unexpected results for the end-user especially if the user for example uses IPV4_PREFERED but the cached AAAA records has a higher TTL then the A records and so the A record was removed. In this case we would only return the AAAA record and not even try to refresh. Modifications: Always expire all records for a hostname when one TTL is reached. Result: Fixes [#7329]
59 lines
1.9 KiB
Java
59 lines
1.9 KiB
Java
/*
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* Copyright 2018 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.resolver.dns;
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import io.netty.channel.DefaultEventLoopGroup;
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import io.netty.channel.EventLoop;
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import io.netty.channel.EventLoopGroup;
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import io.netty.util.NetUtil;
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import org.junit.Assert;
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import org.junit.Test;
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import java.util.concurrent.Callable;
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import java.util.concurrent.TimeUnit;
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public class DefaultDnsCacheTest {
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@Test
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public void testExpire() throws Throwable {
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EventLoopGroup group = new DefaultEventLoopGroup(1);
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try {
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EventLoop loop = group.next();
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final DefaultDnsCache cache = new DefaultDnsCache();
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cache.cache("netty.io", null, NetUtil.LOCALHOST, 1, loop);
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cache.cache("netty.io", null, NetUtil.LOCALHOST6, 10000, loop);
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Throwable error = loop.schedule(new Callable<Throwable>() {
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@Override
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public Throwable call() throws Exception {
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try {
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Assert.assertNull(cache.get("netty.io", null));
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return null;
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} catch (Throwable cause) {
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return cause;
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}
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}
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}, 1, TimeUnit.SECONDS).get();
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if (error != null) {
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throw error;
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}
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} finally {
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group.shutdownGracefully();
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}
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}
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}
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