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agent-functionalities.cpp
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//===-- examples/agent-functionalities/agent-functionalities.cpp *-- C++-*-===//
//
// The RoSA Framework
//
//===----------------------------------------------------------------------===//
///
/// \file examples/agent-functionalities/agent-functionalities.cpp
///
/// \author David Juhasz (david.juhasz@tuwien.ac.at)
///
/// \date 2017
///
/// \brief A simple example on defining \c rosa::Agent instances using
/// \c rosa::agent::Functionality object as components.
///
//===----------------------------------------------------------------------===//
#include "rosa/agent/Abstraction.hpp"
#include "rosa/agent/Confidence.hpp"
#include "rosa/config/version.h"
#include "rosa/core/Agent.hpp"
#include "rosa/core/MessagingSystem.hpp"
#include "rosa/support/log.h"
#include "rosa/support/terminal_colors.h"
#include <vector>
using namespace rosa;
using namespace rosa::agent;
using namespace rosa::terminal;
/// A dummy wrapper for testing \c rosa::MessagingSystem.
///
/// \note Since we test \c rosa::MessagingSystem directly here, we need to get
/// access to its protected members. That we do by imitating to be a decent
/// subclass of \c rosa::MessagingSystem, while calling protected member
/// functions on an object of a type from which we actually don't inherit.
struct SystemTester : protected MessagingSystem {
template <typename T, typename... Funs>
static AgentHandle createMyAgent(MessagingSystem *S, const std::string &Name,
Funs &&... Fs) {
return ((SystemTester *)S)->createAgent<T>(Name, std::move(Fs)...);
}
static void destroyMyAgent(MessagingSystem *S, const AgentHandle &H) {
((SystemTester *)S)->destroyUnit(unwrapAgent(H));
}
};
/// A special \c rosa::Agent with its own state.
class MyAgent : public Agent {
public:
using Tick = AtomConstant<atom("tick")>;
private:
enum class Categories { Bad, Normal, Good };
static const std::map<Categories, const char *> CategoryNames;
History<uint8_t, 10, HistoryPolicy::FIFO> H;
Confidence<uint8_t> C;
RangeAbstraction<uint8_t, Categories> A;
public:
void handler(Tick, uint8_t V) noexcept {
// Record \p V to the \c rosa::agent::History, then print state info.
H << V;
ASSERT(H.entry() == V); // Sanity check.
LOG_INFO_STREAM << "\nNext value: " << PRINTABLE(V)
<< ", confidence: " << C(H)
<< ", category: " << CategoryNames.at(A(H.entry())) << '\n';
}
MyAgent(const AtomValue Kind, const rosa::id_t Id, const std::string &Name,
MessagingSystem &S)
: Agent(Kind, Id, Name, S, THISMEMBER(handler)), H(), C(5, 20, 1),
A({{{(uint8_t)10, (uint8_t)14}, Categories::Normal},
{{(uint8_t)15, (uint8_t)17}, Categories::Good},
{{(uint8_t)18, (uint8_t)19}, Categories::Normal}},
Categories::Bad) {}
};
const std::map<MyAgent::Categories, const char *> MyAgent::CategoryNames{
{Categories::Bad, "Bad"},
{Categories::Normal, "Normal"},
{Categories::Good, "Good"}};
int main(void) {
LOG_INFO_STREAM << library_string() << " -- " << Color::Red
<< "agent-functionalities example" << Color::Default
<< '\n';
std::unique_ptr<MessagingSystem> S = MessagingSystem::createSystem("Sys");
MessagingSystem *SP = S.get();
AgentHandle A = SystemTester::createMyAgent<MyAgent>(SP, "MyAgent");
std::vector<uint8_t> Vs{4, 5, 6, 7, 9, 10, 11, 13,
15, 14, 15, 16, 19, 20, 21};
for (auto I = Vs.begin(); I != Vs.end(); ++I) {
A.send<MyAgent::Tick, uint8_t>(MyAgent::Tick::Value, *I);
}
SystemTester::destroyMyAgent(SP, A);
return 0;
}

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