/**
    * 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.ipc;
  
  import org.apache.hadoop.hbase.classification.InterfaceAudience;
  import org.apache.hadoop.hbase.security.User;
  
  import java.net.InetSocketAddress;
  
  /**
   * This class holds the address and the user ticket, etc. The client connections
   * to servers are uniquely identified by <remoteAddress, ticket, serviceName>
   */
  @InterfaceAudience.Private
  public class ConnectionId {
    private static final int PRIME = 16777619;
    final User ticket;
    final String serviceName;
    final InetSocketAddress address;
  
    public ConnectionId(User ticket, String serviceName, InetSocketAddress address) {
      this.address = address;
      this.ticket = ticket;
      this.serviceName = serviceName;
    }
  
    public String getServiceName() {
      return this.serviceName;
    }
  
    public InetSocketAddress getAddress() {
      return address;
    }
  
    public User getTicket() {
      return ticket;
    }
  
    @Override
    public String toString() {
      return this.address.toString() + "/" + this.serviceName + "/" + this.ticket;
    }
  
    @Override
    public int hashCode() {
      final int prime = 31;
      int result = 1;
      result = prime * result + ((address == null) ? 0 : address.hashCode());
      result = prime * result + ((serviceName == null) ? 0 : serviceName.hashCode());
      result = prime * result + ((ticket == null) ? 0 : ticket.hashCode());
      return result;
    }
  
    @Override
    public boolean equals(Object obj) {
      if (this == obj) {
        return true;
      }
      if (obj == null) {
        return false;
      }
      if (getClass() != obj.getClass()) {
        return false;
      }
      ConnectionId other = (ConnectionId) obj;
      if (address == null) {
        if (other.address != null) {
          return false;
        }
      } else if (!address.equals(other.address)) {
        return false;
      }
      if (serviceName == null) {
        if (other.serviceName != null) {
          return false;
        }
      } else if (!serviceName.equals(other.serviceName)) {
        return false;
      }
      if (ticket == null) {
        if (other.ticket != null) {
          return false;
        }
      } else if (!ticket.equals(other.ticket)) {
       return false;
     }
     return true;
   }
 
   public static int hashCode(User ticket, String serviceName, InetSocketAddress address){
     return (address.hashCode() +
         PRIME * (PRIME * serviceName.hashCode() ^
             (ticket == null ? 0 : ticket.hashCode())));
   }
 }