198 lines
7.3 KiB
Java
198 lines
7.3 KiB
Java
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/*
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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.channel.nio.NioEventLoopGroup;
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import io.netty.util.NetUtil;
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import org.junit.Test;
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import java.net.InetAddress;
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import java.net.InetSocketAddress;
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import java.util.Comparator;
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import java.util.concurrent.Callable;
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import java.util.concurrent.TimeUnit;
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import static org.junit.Assert.*;
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public class DefaultAuthoritativeDnsServerCacheTest {
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@Test
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public void testExpire() throws Throwable {
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InetSocketAddress resolved1 = new InetSocketAddress(
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InetAddress.getByAddress("ns1", new byte[] { 10, 0, 0, 1 }), 53);
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InetSocketAddress resolved2 = new InetSocketAddress(
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InetAddress.getByAddress("ns2", new byte[] { 10, 0, 0, 2 }), 53);
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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 DefaultAuthoritativeDnsServerCache cache = new DefaultAuthoritativeDnsServerCache();
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cache.cache("netty.io", resolved1, 1, loop);
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cache.cache("netty.io", resolved2, 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() {
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try {
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assertNull(cache.get("netty.io"));
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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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@Test
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public void testExpireWithDifferentTTLs() {
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testExpireWithTTL0(1);
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testExpireWithTTL0(1000);
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testExpireWithTTL0(1000000);
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}
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private static void testExpireWithTTL0(int days) {
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EventLoopGroup group = new NioEventLoopGroup(1);
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try {
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EventLoop loop = group.next();
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final DefaultAuthoritativeDnsServerCache cache = new DefaultAuthoritativeDnsServerCache();
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cache.cache("netty.io", new InetSocketAddress(NetUtil.LOCALHOST, 53), days, loop);
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} finally {
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group.shutdownGracefully();
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}
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}
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@Test
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public void testAddMultipleDnsServerForSameHostname() throws Exception {
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InetSocketAddress resolved1 = new InetSocketAddress(
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InetAddress.getByAddress("ns1", new byte[] { 10, 0, 0, 1 }), 53);
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InetSocketAddress resolved2 = new InetSocketAddress(
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InetAddress.getByAddress("ns2", new byte[] { 10, 0, 0, 2 }), 53);
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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 DefaultAuthoritativeDnsServerCache cache = new DefaultAuthoritativeDnsServerCache();
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cache.cache("netty.io", resolved1, 100, loop);
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cache.cache("netty.io", resolved2, 10000, loop);
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DnsServerAddressStream entries = cache.get("netty.io");
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assertEquals(2, entries.size());
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assertEquals(resolved1, entries.next());
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assertEquals(resolved2, entries.next());
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} finally {
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group.shutdownGracefully();
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}
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}
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@Test
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public void testUnresolvedReplacedByResolved() throws Exception {
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InetSocketAddress unresolved = InetSocketAddress.createUnresolved("ns1", 53);
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InetSocketAddress resolved1 = new InetSocketAddress(
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InetAddress.getByAddress("ns2", new byte[] { 10, 0, 0, 2 }), 53);
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InetSocketAddress resolved2 = new InetSocketAddress(
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InetAddress.getByAddress("ns1", new byte[] { 10, 0, 0, 1 }), 53);
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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 DefaultAuthoritativeDnsServerCache cache = new DefaultAuthoritativeDnsServerCache();
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cache.cache("netty.io", unresolved, 100, loop);
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cache.cache("netty.io", resolved1, 10000, loop);
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DnsServerAddressStream entries = cache.get("netty.io");
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assertEquals(2, entries.size());
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assertEquals(unresolved, entries.next());
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assertEquals(resolved1, entries.next());
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cache.cache("netty.io", resolved2, 100, loop);
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DnsServerAddressStream entries2 = cache.get("netty.io");
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assertEquals(2, entries2.size());
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assertEquals(resolved2, entries2.next());
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assertEquals(resolved1, entries2.next());
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} finally {
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group.shutdownGracefully();
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}
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}
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@Test
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public void testUseNoComparator() throws Exception {
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testUseComparator0(true);
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}
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@Test
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public void testUseComparator() throws Exception {
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testUseComparator0(false);
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}
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private static void testUseComparator0(boolean noComparator) throws Exception {
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InetSocketAddress unresolved = InetSocketAddress.createUnresolved("ns1", 53);
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InetSocketAddress resolved = new InetSocketAddress(
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InetAddress.getByAddress("ns2", new byte[] { 10, 0, 0, 2 }), 53);
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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 DefaultAuthoritativeDnsServerCache cache;
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if (noComparator) {
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cache = new DefaultAuthoritativeDnsServerCache(10000, 10000, null);
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} else {
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cache = new DefaultAuthoritativeDnsServerCache(10000, 10000,
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new Comparator<InetSocketAddress>() {
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@Override
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public int compare(InetSocketAddress o1, InetSocketAddress o2) {
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if (o1.equals(o2)) {
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return 0;
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}
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if (o1.isUnresolved()) {
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return 1;
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} else {
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return -1;
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}
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}
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});
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}
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cache.cache("netty.io", unresolved, 100, loop);
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cache.cache("netty.io", resolved, 10000, loop);
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DnsServerAddressStream entries = cache.get("netty.io");
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assertEquals(2, entries.size());
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if (noComparator) {
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assertEquals(unresolved, entries.next());
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assertEquals(resolved, entries.next());
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} else {
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assertEquals(resolved, entries.next());
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assertEquals(unresolved, entries.next());
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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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