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
47 lines
1.4 KiB
Java
47 lines
1.4 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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abstract class DefaultDnsServerAddresses extends DnsServerAddresses {
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protected final InetSocketAddress[] addresses;
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private final String strVal;
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DefaultDnsServerAddresses(String type, InetSocketAddress[] addresses) {
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this.addresses = addresses;
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final StringBuilder buf = new StringBuilder(type.length() + 2 + addresses.length * 16);
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buf.append(type).append('(');
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for (InetSocketAddress a: addresses) {
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buf.append(a).append(", ");
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}
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buf.setLength(buf.length() - 2);
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buf.append(')');
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strVal = buf.toString();
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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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