io.netty.channel.local.LocalAddress Maven / Gradle / Ivy
/*
* Copyright 2012 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:
*
* http://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.channel.local;
import io.netty.channel.Channel;
import java.net.SocketAddress;
/**
* An endpoint in the local transport. Each endpoint is identified by a unique
* case-insensitive string.
*/
public final class LocalAddress extends SocketAddress implements Comparable {
private static final long serialVersionUID = 4644331421130916435L;
public static final LocalAddress ANY = new LocalAddress("ANY");
private final String id;
private final String strVal;
/**
* Creates a new ephemeral port based on the ID of the specified channel.
* Note that we prepend an upper-case character so that it never conflicts with
* the addresses created by a user, which are always lower-cased on construction time.
*/
LocalAddress(Channel channel) {
StringBuilder buf = new StringBuilder(16);
buf.append("local:E");
buf.append(Long.toHexString(channel.id().intValue() & 0xFFFFFFFFL | 0x100000000L));
buf.setCharAt(7, ':');
id = buf.substring(6);
strVal = buf.toString();
}
/**
* Creates a new instance with the specified ID.
*/
public LocalAddress(String id) {
if (id == null) {
throw new NullPointerException("id");
}
id = id.trim().toLowerCase();
if (id.isEmpty()) {
throw new IllegalArgumentException("empty id");
}
this.id = id;
strVal = "local:" + id;
}
/**
* Returns the ID of this address.
*/
public String id() {
return id;
}
@Override
public int hashCode() {
return id.hashCode();
}
@Override
public boolean equals(Object o) {
if (!(o instanceof LocalAddress)) {
return false;
}
return id.equals(((LocalAddress) o).id);
}
@Override
public int compareTo(LocalAddress o) {
return id.compareTo(o.id);
}
@Override
public String toString() {
return strVal;
}
}