TickerResourceObserver.cpp

00001 /**
00002  * @file    TickerResourceObserver.cpp
00003  * @brief   mbed CoAP DynamicResource Ticker-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/TickerResourceObserver.h"
00025  
00026  #ifdef CONNECTOR_USING_TICKER
00027   
00028  // constructor
00029  TickerResourceObserver::TickerResourceObserver(DynamicResource *resource,int sleep_time) : 
00030                                     ResourceObserver(resource,(int)(sleep_time/1000)) {
00031      this->setObserving(false);
00032      
00033      // DEBUG
00034      if (sleep_time > 0) {
00035         this->logger()->log("TickerResourceObserver being used for %s (sleep_time: %d ms)",resource->getFullName().c_str(),sleep_time);
00036      }
00037      else {
00038         this->logger()->log("TickerResourceObserver being used for %s",resource->getFullName().c_str());
00039      }
00040  }
00041   
00042  // destructor
00043  TickerResourceObserver::~TickerResourceObserver() {
00044      this->stopObservation();
00045  }
00046 
00047  // notifier
00048  void TickerResourceObserver::observationNotifier() {
00049      if (this->isObserving() == true && this->getResource() != NULL && this->getResource()->isRegistered() == true) {
00050          this->getResource()->observe();
00051      }
00052  }
00053  
00054  // begin observing...
00055  void TickerResourceObserver::beginObservation() {
00056      if (this->isObserving() == false) {
00057         this->m_ticker.attach(this,&TickerResourceObserver::observationNotifier,(float)this->getSleepTime());
00058         this->setObserving(true);
00059      }
00060  }
00061  
00062  // begin observing...
00063  void TickerResourceObserver::stopObservation() {
00064      this->setObserving(false);
00065  }
00066 
00067  // halt the underlying observer mechanism
00068  void TickerResourceObserver::halt() {
00069      this->m_ticker.detach();
00070  }
00071  
00072  #endif // CONNECTOR_USING_TICKER