719d1dbad1
Related: #4065 Motivation: DnsNameResolver was using a special Iterable/Iterator implementation that yields an infinite stream of DNS server addresses. However, this seems to cause confusion. Modifications: - Make DnsServerAddresses an abstract class with an abstract stream() method that returns DnsServerAddressStream - Add DnsServerAddressStream that yields DNS server address infinitely - Remove DnsServerResolver(Group) constructors that accept only a single server address, which wasn't very useful in practice - Extract the DnsServerAddresses implementations to top level - DnsServerAddresses.defaultAddresses() now returns DnsServerAddresses. - Add DnsServerAddresses.defaultAddressList() instead Result: Less confusion and more explicitness
53 lines
1.5 KiB
Java
53 lines
1.5 KiB
Java
/*
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* Copyright 2015 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 java.net.InetSocketAddress;
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final class SingletonDnsServerAddresses extends DnsServerAddresses {
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private final InetSocketAddress address;
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private final String strVal;
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private final DnsServerAddressStream stream = new DnsServerAddressStream() {
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@Override
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public InetSocketAddress next() {
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return address;
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}
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@Override
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public String toString() {
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return SingletonDnsServerAddresses.this.toString();
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}
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};
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SingletonDnsServerAddresses(InetSocketAddress address) {
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this.address = address;
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strVal = new StringBuilder(32).append("singleton(").append(address).append(')').toString();
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}
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@Override
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public DnsServerAddressStream stream() {
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return stream;
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}
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@Override
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public String toString() {
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return strVal;
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}
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}
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