include/private/redis/hiredisclusterepolladapter.hpp

   1 /*
   2    Copyright (c) 2018-2019 Nokia.
   3
   4    Licensed under the Apache License, Version 2.0 (the "License");
   5    you may not use this file except in compliance with the License.
   6    You may obtain a copy of the License at
   7
   8        http://www.apache.org/licenses/LICENSE-2.0
   9
  10    Unless required by applicable law or agreed to in writing, software
  11    distributed under the License is distributed on an "AS IS" BASIS,
  12    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13    See the License for the specific language governing permissions and
  14    limitations under the License.
  15 */
  16
  17 /*
  18  * This source code is part of the near-RT RIC (RAN Intelligent Controller)
  19  * platform project (RICP).
  20 */
  21
  22 #ifndef SHAREDDATALAYER_REDIS_HIREDISCLUSTEREPOLLADAPTER_HPP_
  23 #define SHAREDDATALAYER_REDIS_HIREDISCLUSTEREPOLLADAPTER_HPP_
  24
  25 #include <map>
  26 #include <memory>
  27
  28 extern "C"
  29 {
  30     struct redisClusterAsyncContext;
  31     struct redisAsyncContext;
  32 }
  33
  34 namespace shareddatalayer
  35 {
  36     class Engine;
  37
  38     namespace redis
  39     {
  40         class HiredisClusterSystem;
  41
  42         class HiredisClusterEpollAdapter
  43         {
  44         public:
  45             class Node;
  46
  47             explicit HiredisClusterEpollAdapter(Engine& engine);
  48
  49             HiredisClusterEpollAdapter(Engine& engine, HiredisClusterSystem& hiredisClusterSystem);
  50
  51             virtual ~HiredisClusterEpollAdapter() = default;
  52
  53             virtual void setup(redisClusterAsyncContext* acc);
  54
  55             virtual void attach(redisAsyncContext* ac);
  56
  57             virtual void detach(const redisAsyncContext* ac);
  58
  59             HiredisClusterEpollAdapter(const HiredisClusterEpollAdapter&) = delete;
  60             HiredisClusterEpollAdapter(HiredisClusterEpollAdapter&&) = delete;
  61             HiredisClusterEpollAdapter& operator = (const HiredisClusterEpollAdapter&) = delete;
  62             HiredisClusterEpollAdapter& operator = (HiredisClusterEpollAdapter&&) = delete;
  63
  64         private:
  65             Engine& engine;
  66             HiredisClusterSystem& hiredisClusterSystem;
  67             std::map<int, std::unique_ptr<Node>> nodes;
  68         };
  69
  70         class HiredisClusterEpollAdapter::Node
  71         {
  72         public:
  73             Node(Engine& engine,
  74                  redisAsyncContext* ac,
  75                  HiredisClusterSystem& hiredisClusterSystem);
  76
  77             ~Node();
  78
  79             void addRead();
  80
  81             void addWrite();
  82
  83             void delRead();
  84
  85             void delWrite();
  86
  87             void cleanup();
  88
  89             Node(const Node&) = delete;
  90             Node(Node&&) = delete;
  91             Node& operator = (const Node&) = delete;
  92             Node& operator = (Node&&) = delete;
  93
  94         private:
  95             HiredisClusterSystem& hiredisClusterSystem;
  96             Engine& engine;
  97             redisAsyncContext* ac;
  98             unsigned int eventState;
  99             bool reading;
 100             bool writing;
 101             bool isMonitoring;
 102
 103             void eventHandler(unsigned int events);
 104         };
 105     }
 106 }
 107
 108 #endif