service/resource-encapsulation/src/resourceCache/include/DataCache.h

   1 //******************************************************************
   2 //
   3 // Copyright 2015 Samsung Electronics All Rights Reserved.
   4 //
   5 //-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
   6 //
   7 // Licensed under the Apache License, Version 2.0 (the "License");
   8 // you may not use this file except in compliance with the License.
   9 // You may obtain a copy of the License at
  10 //
  11 //      http://www.apache.org/licenses/LICENSE-2.0
  12 //
  13 // Unless required by applicable law or agreed to in writing, software
  14 // distributed under the License is distributed on an "AS IS" BASIS,
  15 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16 // See the License for the specific language governing permissions and
  17 // limitations under the License.
  18 //
  19 //-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  20
  21 #ifndef RCM_DATACACHE_H_
  22 #define RCM_DATACACHE_H_
  23
  24 #include <list>
  25 #include <string>
  26 #include <memory>
  27
  28 #include "CacheTypes.h"
  29 #include "ExpiryTimer.h"
  30
  31 namespace OIC
  32 {
  33     namespace Service
  34     {
  35         class DataCache
  36         {
  37             public:
  38                 typedef unsigned int TimerID;
  39                 typedef std::function<void(TimerID)> TimerCB;
  40
  41             public:
  42                 DataCache();
  43                 ~DataCache();
  44
  45                 void initializeDataCache(PrimitiveResourcePtr pResource);
  46
  47                 CacheID addSubscriber(CacheCB func, REPORT_FREQUENCY rf, long repeatTime);
  48                 CacheID deleteSubscriber(CacheID id);
  49
  50                 CACHE_STATE getCacheState() const;
  51                 const RCSResourceAttributes getCachedData() const;
  52                 const PrimitiveResourcePtr getPrimitiveResource() const;
  53
  54                 void requestGet();
  55                 bool isEmptySubscriber() const;
  56
  57             private:
  58                 // resource instance
  59                 PrimitiveResourcePtr sResource;
  60
  61                 // cached data info
  62                 RCSResourceAttributes attributes;
  63                 CACHE_STATE state;
  64                 CACHE_MODE mode;
  65
  66                 // subscriber info
  67                 std::unique_ptr<SubscriberInfo> subscriberList;
  68
  69                 ExpiryTimer networkTimer;
  70                 ExpiryTimer pollingTimer;
  71                 TimerID networkTimeOutHandle;
  72                 TimerID pollingHandle;
  73
  74                 ObserveCB pObserveCB;
  75                 GetCB pGetCB;
  76                 TimerCB pTimerCB;
  77                 TimerCB pPollingCB;
  78
  79                 // for requestCB from base
  80                 void onObserve(const HeaderOptions &_hos,
  81                                const ResponseStatement &_rep, int _result, int _seq);
  82                 void onGet(const HeaderOptions &_hos, const ResponseStatement &_rep, int _result);
  83                 void onTimeOut(const unsigned int timerID);
  84                 void onPollingOut(const unsigned int timerID);
  85
  86                 CacheID generateCacheID();
  87                 SubscriberInfoPair findSubscriber(CacheID id);
  88                 void notifyObservers(RCSResourceAttributes Att);
  89         };
  90     } // namespace Service
  91 } // namespace OIC
  92
  93 #endif /* RCM_DATACACHE_H_ */