hbase-client/src/main/java/org/apache/hadoop/hbase/ipc/ConnectionId.java

   1 /*
   2  * Licensed to the Apache Software Foundation (ASF) under one
   3  * or more contributor license agreements.  See the NOTICE file
   4  * distributed with this work for additional information
   5  * regarding copyright ownership.  The ASF licenses this file
   6  * to you under the Apache License, Version 2.0 (the
   7  * "License"); you may not use this file except in compliance
   8  * with the License.  You may obtain a copy of the License at
   9  *
  10  *     http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  * Unless required by applicable law or agreed to in writing, software
  13  * distributed under the License is distributed on an "AS IS" BASIS,
  14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  * See the License for the specific language governing permissions and
  16  * limitations under the License.
  17  */
  18 package org.apache.hadoop.hbase.ipc;
  19
  20 import java.util.Objects;
  21
  22 import org.apache.hadoop.hbase.net.Address;
  23 import org.apache.hadoop.hbase.security.User;
  24 import org.apache.yetus.audience.InterfaceAudience;
  25
  26 /**
  27  * This class holds the address and the user ticket, etc. The client connections
  28  * to servers are uniquely identified by &lt;remoteAddress, ticket, serviceName&gt;
  29  */
  30 @InterfaceAudience.Private
  31 class ConnectionId {
  32   private static final int PRIME = 16777619;
  33   final User ticket;
  34   final String serviceName;
  35   final Address address;
  36
  37   public ConnectionId(User ticket, String serviceName, Address address) {
  38     this.address = address;
  39     this.ticket = ticket;
  40     this.serviceName = serviceName;
  41   }
  42
  43   public String getServiceName() {
  44     return this.serviceName;
  45   }
  46
  47   public Address getAddress() {
  48     return address;
  49   }
  50
  51   public User getTicket() {
  52     return ticket;
  53   }
  54
  55   @Override
  56   public String toString() {
  57     return this.address.toString() + "/" + this.serviceName + "/" + this.ticket;
  58   }
  59
  60   @Override
  61   public boolean equals(Object obj) {
  62     if (obj instanceof ConnectionId) {
  63       ConnectionId id = (ConnectionId) obj;
  64       return address.equals(id.address) &&
  65             ((ticket != null && ticket.equals(id.ticket)) ||
  66              (ticket == id.ticket)) && Objects.equals(this.serviceName, id.serviceName);
  67     }
  68     return false;
  69   }
  70
  71   @Override  // simply use the default Object#hashcode() ?
  72   public int hashCode() {
  73     return hashCode(ticket,serviceName,address);
  74   }
  75
  76   public static int hashCode(User ticket, String serviceName, Address address) {
  77     return (address.hashCode() +
  78         PRIME * (PRIME * serviceName.hashCode() ^
  79             (ticket == null ? 0 : ticket.hashCode())));
  80   }
  81 }