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/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF 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 org.apache.hadoop.hbase.net;

import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.classification.InterfaceStability;

import com.google.common.net.HostAndPort;

/**
 * An immutable type to hold a hostname and port combo, like an Endpoint
 * or java.net.InetSocketAddress (but without danger of our calling
 * resolve -- we do NOT want a resolve happening every time we want
 * to hold a hostname and port combo). This class is also {@link Comparable}
 * In implementation this class is a facade over Guava's {@link HostAndPort}.
 * We cannot have Guava classes in our API hence this Type.
 */
@InterfaceAudience.Public
@InterfaceStability.Stable
public class Address implements Comparable {
  private HostAndPort hostAndPort;

  private Address(HostAndPort hostAndPort) {
    this.hostAndPort = hostAndPort;
  }

  public static Address fromParts(String hostname, int port) {
    return new Address(HostAndPort.fromParts(hostname, port));
  }

  public static Address fromString(String hostnameAndPort) {
    return new Address(HostAndPort.fromString(hostnameAndPort));
  }

  public String getHostname() {
    return this.hostAndPort.getHostText();
  }

  public int getPort() {
    return this.hostAndPort.getPort();
  }

  @Override
  public String toString() {
    return this.hostAndPort.toString();
  }

  @Override
  // Don't use HostAndPort equals... It is wonky including
  // ipv6 brackets
  public boolean equals(Object other) {
    if (this == other) {
      return true;
    }
    if (other instanceof Address) {
      Address that = (Address)other;
      return this.getHostname().equals(that.getHostname()) &&
          this.getPort() == that.getPort();
    }
    return false;
  }

  @Override
  public int hashCode() {
    return this.getHostname().hashCode() ^ getPort();
  }

  @Override
  public int compareTo(Address that) {
    int compare = this.getHostname().compareTo(that.getHostname());
    if (compare != 0) {
      return compare;
    }

    return this.getPort() - that.getPort();
  }
}