service/resource-container/src/DiscoverResourceUnit.cpp

   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 #include "RCSRemoteResourceObject.h"
  22 #include "DiscoverResourceUnit.h"
  23 #include "RCSAddress.h"
  24
  25 using namespace OIC::Service;
  26
  27 DiscoverResourceUnit::DiscoverResourceUnit(const std::string &bundleId)
  28     : m_bundleId(bundleId)
  29 {
  30     pUpdatedCB = nullptr;
  31     isStartedDiscovery = false;
  32     discoveryTask = nullptr;
  33
  34     pUpdatedCBFromServer = std::bind(&DiscoverResourceUnit::onUpdate, this,
  35                                      std::placeholders::_1, std::placeholders::_2);
  36 }
  37
  38 DiscoverResourceUnit::~DiscoverResourceUnit()
  39 {
  40     pUpdatedCB = nullptr;
  41     discoveryTask = nullptr;
  42     pUpdatedCBFromServer = nullptr;
  43
  44     m_vecRemoteResource.clear();
  45 }
  46
  47 void DiscoverResourceUnit::startDiscover(DiscoverResourceInfo info, UpdatedCB updatedCB)
  48 {
  49     if (isStartedDiscovery)
  50     {
  51         // Already start Discovery
  52         return;
  53     }
  54
  55     OC_LOG_V(DEBUG, CONTAINER_TAG, "Start discover%s", info.resourceUri.c_str());
  56
  57     m_Uri = info.resourceUri;
  58     m_ResourceType = info.resourceType;
  59     m_AttrubuteName = info.attributeName;
  60     pUpdatedCB = updatedCB;
  61
  62     try
  63     {
  64         // TODO may be will changed active discovery
  65         if (m_Uri.empty())
  66         {
  67             pDiscoveredCB = std::bind(&DiscoverResourceUnit::discoverdCB, this, std::placeholders::_1,
  68                                       std::string(""));
  69         }
  70         else
  71         {
  72             pDiscoveredCB = std::bind(&DiscoverResourceUnit::discoverdCB, this, std::placeholders::_1, m_Uri);
  73         }
  74
  75         discoveryTask = RCSDiscoveryManager::getInstance()->discoverResourceByType(
  76                             RCSAddress::multicast(), m_ResourceType, pDiscoveredCB);
  77     }
  78     catch (RCSInvalidParameterException &e)
  79     {
  80         // TODO Handle Exception
  81         return;
  82     }
  83
  84     isStartedDiscovery = true;
  85 }
  86
  87 void DiscoverResourceUnit::discoverdCB(RCSRemoteResourceObject::Ptr remoteObject, std::string uri)
  88 {
  89     if (remoteObject && !isAlreadyDiscoveredResource(remoteObject))
  90     {
  91         OC_LOG_V(DEBUG, CONTAINER_TAG, "Discovered%s", uri.c_str());
  92         RemoteResourceUnit::Ptr newDiscoveredResource =
  93             RemoteResourceUnit::createRemoteResourceInfo(remoteObject, pUpdatedCBFromServer);
  94
  95         if (uri.empty() || uri.compare(remoteObject->getUri()) == 0)
  96         {
  97             m_vecRemoteResource.push_back(newDiscoveredResource);
  98             newDiscoveredResource->startMonitoring();
  99             newDiscoveredResource->startCaching();
 100         }
 101     }
 102     else
 103     {
 104         // Already Discovered Resource
 105     }
 106 }
 107
 108 void DiscoverResourceUnit::onUpdate(REMOTE_MSG msg, RCSRemoteResourceObject::Ptr updatedResource)
 109 {
 110     if (msg == REMOTE_MSG::DATA_UPDATED)
 111     {
 112         if (updatedResource == nullptr)
 113         {
 114             return;
 115         }
 116         try
 117         {
 118             updatedResource->getCachedAttribute(m_AttrubuteName);
 119         }
 120         catch (RCSInvalidKeyException &e)
 121         {
 122             // TODO Handle Exception
 123             return;
 124         }
 125         catch (std::exception &e)
 126         {
 127             return;
 128         }
 129
 130         std::vector<RCSResourceAttributes::Value> retVector
 131             = buildInputResourceData(updatedResource);
 132         if (!retVector.empty() && pUpdatedCB != nullptr)
 133         {
 134             pUpdatedCB(m_AttrubuteName, retVector);
 135         }
 136     }
 137     else
 138     {
 139         // TODO find & delete
 140     }
 141 }
 142
 143 std::vector<RCSResourceAttributes::Value> DiscoverResourceUnit::buildInputResourceData(
 144     RCSRemoteResourceObject::Ptr updatedResource)
 145 {
 146     (void)updatedResource;
 147     std::vector<RCSResourceAttributes::Value> retVector = {};
 148     for (auto iter : m_vecRemoteResource)
 149     {
 150         if (iter->getRemoteResourceObject()->getCacheState() != CacheState::READY)
 151         {
 152             continue;
 153         }
 154
 155         try
 156         {
 157             RCSResourceAttributes::Value value =
 158                 iter->getRemoteResourceObject()->getCachedAttribute(m_AttrubuteName);
 159             retVector.push_back(value);
 160
 161         }
 162         catch (RCSInvalidKeyException &e)
 163         {
 164             // TODO Handle Exception
 165         }
 166     }
 167
 168     return retVector;
 169 }
 170
 171 bool DiscoverResourceUnit::isAlreadyDiscoveredResource(
 172     RCSRemoteResourceObject::Ptr discoveredResource)
 173 {
 174     for (auto iter : m_vecRemoteResource)
 175     {
 176         if (discoveredResource->getUri().compare(iter->getRemoteResourceUri()) == 0 &&
 177             discoveredResource->getAddress().compare(iter->getRemoteResourceObject()->getAddress()) == 0 )
 178         {
 179             return true;
 180         }
 181     }
 182     return false;
 183 }