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/*
* Copyright (C) 2015, 2016 "IoT.bzh"
* Author "Romain Forlot" <romain.forlot@iot.bzh>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <float.h>
#include <fnmatch.h>
#include <memory>
#include "signal.hpp"
#include "signal-composer.hpp"
#define MICRO 1000000
Signal::Signal(const std::string& id,
std::vector<std::string>& sources,
const std::string& unit,
double frequency,
CtlActionT* onReceived)
:id_(id),
signalSigList_(sources),
timestamp_(0.0),
value_({0,0,0,0,0,""}),
frequency_(frequency),
unit_(unit),
onReceived_(onReceived)
{}
Signal::operator bool() const
{
if(id_.empty())
{return false;}
return true;
}
bool Signal::operator ==(const Signal& other) const
{
if(id_ == other.id_) {return true;}
return false;
}
bool Signal::operator ==(const std::string& aName) const
{
if(! fnmatch(aName.c_str(), id_.c_str(), FNM_CASEFOLD)) {return true;}
for( const std::string& src : signalSigList_)
{
if(! fnmatch(aName.c_str(), src.c_str(), FNM_CASEFOLD)) {return true;}
}
return false;
}
const std::string Signal::id() const
{
return id_;
}
json_object* Signal::toJSON() const
{
json_object* queryJ = nullptr;
std::vector<std::string> lowSignalName;
for (const std::string& src: signalSigList_ )
{
ssize_t sep = src.find_first_of("/");
if(sep != std::string::npos)
{
lowSignalName.push_back(src.substr(sep+1));
}
}
json_object* nameArray = json_object_new_array();
for (const std::string& lowSig: lowSignalName)
{
json_object_array_add(nameArray, json_object_new_string(lowSig.c_str()));
}
/*json_object_object_add(queryJ, "signal", nameArray);
json_object_object_add(queryJ, "unit", json_object_new_string(unit_.c_str()));
json_object_object_add(queryJ, "unit", json_object_new_double(frequency_));*/
wrap_json_pack(&queryJ, "{so,ss*,sf*}",
"signal", nameArray,
"unit", unit_.c_str(),
"frequency", frequency_);
return queryJ;
}
void Signal::update(long long int timestamp, struct SignalValue value)
{
AFB_NOTICE("Got an update from observed signal. Timestamp: %lld, vb: %d, vn: %lf, vs: %s", timestamp, value.boolVal, value.numVal, value.strVal.c_str());
}
/// @brief Notify observers that there is a change and execute callback defined
/// when signal is received
///
/// @param[in] queryJ - JSON query object to transmit to callback function
///
/// @return 0 if OK, -1 or other if not.
int Signal::onReceivedCB(json_object *queryJ)
{
notify();
return onReceived_ ? ActionExecOne(onReceived_, queryJ) : 0;
}
void Signal::attach(Signal* obs)
{
Observers_.push_back(obs);
}
void Signal::attachToSourceSignals(bindingApp& bApp)
{
for (const std::string& srcSig: signalSigList_)
{
if(srcSig.find("/") == std::string::npos)
{
std::shared_ptr<Signal> sig = bApp.searchSignal(srcSig);
if(sig)
{
AFB_NOTICE("Attaching %s to %s", id_.c_str(), srcSig.c_str());
sig->attach(this);
continue;
}
AFB_WARNING("Can't attach. Is %s exists ?", srcSig.c_str());
}
}
}
void Signal::notify()
{
for (int i = 0; i < Observers_.size(); ++i)
Observers_[i]->update(timestamp_, value_);
}
int Signal::recursionCheck(const std::string& origId)
{
for (const auto& obs: Observers_)
{
if( id_ == obs->id())
{return -1;}
if( origId == obs->id())
{return -1;}
if(! obs->recursionCheck(origId))
{return -1;}
}
return 0;
}
int Signal::recursionCheck()
{
for (const auto& obs: Observers_)
{
if( id_ == obs->id())
{return -1;}
if( obs->recursionCheck(id_))
{return -1;}
}
return 0;
}
double Signal::average(int seconds) const
{
long long int begin = history_.begin()->first,
end = begin+(seconds*MICRO);
double total = 0.0;
int nbElt = 0;
for (const auto& val: history_)
{
if(val.first >= end)
{break;}
if(val.second.hasNum)
{
total += val.second.numVal;
nbElt++;
}
else
{
AFB_ERROR("There isn't numerical value to compare with in that signal '%s'. Stored value : bool %d, num %lf, str: %s",
id_.c_str(),
val.second.boolVal,
val.second.numVal,
val.second.strVal.c_str());
break;
}
}
return total / nbElt;
}
double Signal::minimum() const
{
double min = DBL_MAX;
for (auto& v : history_)
{
if(v.second.hasNum && v.second.numVal < min)
{min = v.second.numVal;}
else
{
AFB_ERROR("There isn't numerical value to compare with in that signal '%s'. Stored value : bool %d, num %lf, str: %s",
id_.c_str(),
v.second.boolVal,
v.second.numVal,
v.second.strVal.c_str());
break;
}
}
return min;
}
double Signal::maximum() const
{
double max = 0.0;
for (auto& v : history_)
{
if(v.second.hasNum && v.second.hasNum > max)
{max = v.second.numVal;}
else
{
AFB_ERROR("There isn't numerical value to compare with in that signal '%s'. Stored value : bool %d, num %lf, str: %s",
id_.c_str(),
v.second.boolVal,
v.second.numVal,
v.second.strVal.c_str());
break;
}
}
return max;
}
struct SignalValue Signal::last() const
{
return history_.rbegin()->second;
}
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