MinarResourceObserver.cpp

00001 /**
00002  * @file    MinarResourceObserver.cpp
00003  * @brief   mbed CoAP DynamicResource Minar-based observer (implementation)
00004  * @author  Doug Anson/Chris Paola
00005  * @version 1.0
00006  * @see
00007  *
00008  * Copyright (c) 2014
00009  *
00010  * Licensed under the Apache License, Version 2.0 (the "License");
00011  * you may not use this file except in compliance with the License.
00012  * You may obtain a copy of the License at
00013  *
00014  *     http://www.apache.org/licenses/LICENSE-2.0
00015  *
00016  * Unless required by applicable law or agreed to in writing, software
00017  * distributed under the License is distributed on an "AS IS" BASIS,
00018  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00019  * See the License for the specific language governing permissions and
00020  * limitations under the License.
00021  */
00022 
00023 // class support
00024 #include "mbed-connector-interface/MinarResourceObserver.h"
00025 
00026 #if defined(MCI_MINAR_SCHEDULER)
00027 
00028  // constructor
00029  MinarResourceObserver::MinarResourceObserver(DynamicResource *resource,int sleep_time) : ResourceObserver(resource,sleep_time) {
00030      this->setObserving(false);
00031         
00032      // DEBUG
00033      if (sleep_time > 0) {
00034         this->logger()->log("MinarResourceObserver being used for %s (sleep_time: %d ms)",resource->getFullName().c_str(),sleep_time);
00035      }
00036      else {
00037         this->logger()->log("MinarResourceObserver being used for %s",resource->getFullName().c_str());
00038      }
00039  }
00040 
00041  // destructor
00042  MinarResourceObserver::~MinarResourceObserver() {
00043      this->stopObservation();
00044  }
00045 
00046  // notifier
00047  void MinarResourceObserver::perform_observation() {
00048      if (this->isObserving() == true && this->getResource() != NULL && this->getResource()->isConnected() == true) {
00049              this->getResource()->observe();
00050      }
00051  }
00052 
00053  // begin observing...
00054  void MinarResourceObserver::beginObservation() {
00055      this->setObserving(true);
00056      minar::Scheduler::postCallback(this,&MinarResourceObserver::perform_observation).period(minar::milliseconds(this->getSleepTime()));
00057  }
00058 
00059  // stop observing...
00060  void MinarResourceObserver::stopObservation() {
00061      this->setObserving(false);
00062  }
00063  
00064  // halt the underlying observer mechanism
00065  void MinarResourceObserver::halt() {
00066      minar::Scheduler::stop();
00067  }
00068  
00069  #endif // MCI_MINAR_SCHEDULER