io.netty.resolver.dns.SequentialDnsServerAddressStream Maven / Gradle / Ivy
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Easy Redis Java client and Real-Time Data Platform. Valkey compatible. Sync/Async/RxJava3/Reactive API. Client side caching. Over 50 Redis based Java objects and services: JCache API, Apache Tomcat, Hibernate, Spring, Set, Multimap, SortedSet, Map, List, Queue, Deque, Semaphore, Lock, AtomicLong, Map Reduce, Bloom filter, Scheduler, RPC
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/*
* Copyright 2015 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package io.netty.resolver.dns;
import java.net.InetSocketAddress;
import java.util.Collection;
import java.util.List;
final class SequentialDnsServerAddressStream implements DnsServerAddressStream {
private final List extends InetSocketAddress> addresses;
private int i;
SequentialDnsServerAddressStream(List extends InetSocketAddress> addresses, int startIdx) {
this.addresses = addresses;
i = startIdx;
}
@Override
public InetSocketAddress next() {
int i = this.i;
InetSocketAddress next = addresses.get(i);
if (++ i < addresses.size()) {
this.i = i;
} else {
this.i = 0;
}
return next;
}
@Override
public int size() {
return addresses.size();
}
@Override
public SequentialDnsServerAddressStream duplicate() {
return new SequentialDnsServerAddressStream(addresses, i);
}
@Override
public String toString() {
return toString("sequential", i, addresses);
}
static String toString(String type, int index, Collection extends InetSocketAddress> addresses) {
final StringBuilder buf = new StringBuilder(type.length() + 2 + addresses.size() * 16);
buf.append(type).append("(index: ").append(index);
buf.append(", addrs: (");
for (InetSocketAddress a: addresses) {
buf.append(a).append(", ");
}
buf.setLength(buf.length() - 2);
buf.append("))");
return buf.toString();
}
}
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