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Copy pathClientSession.cpp
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131 lines (103 loc) · 3.68 KB
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#include "ClientSession.h"
#include <cassert>
#include <iterator>
#include "comms/cast.h"
#include "comms/iterator.h"
#include "comms/process.h"
namespace cc_tutorial
{
void ClientSession::handle(Msg1& msg)
{
std::cout << "Received \"" << msg.doName() << "\" with ID=" << (unsigned)msg.doGetId() << '\n' <<
'\t' << msg.field_f1().name() << " = " << msg.field_f1().value() << '\n' <<
'\t' << msg.field_f2().name() << " = " << msg.field_f2().value() << '\n' <<
std::endl;
if (m_currentStage != CommsStage_Msg1) {
std::cerr << "ERROR: Unexpected stage" << std::endl;
return;
}
doNextStage();
}
void ClientSession::handle(Message& msg)
{
std::cerr << "ERROR: Received unexpected message \"" << msg.name() << " with ID=" << (unsigned)msg.getId() << std::endl;
}
bool ClientSession::startImpl()
{
doNextStage();
return true;
}
std::size_t ClientSession::processInputImpl(const std::uint8_t* buf, std::size_t bufLen)
{
std::cout << "Processing input: " << std::hex;
std::copy_n(buf, bufLen, std::ostream_iterator<unsigned>(std::cout, " "));
std::cout << std::dec << std::endl;
// Process reported input, create relevant message objects and
// dispatch all the created messages
// to this object for handling (appropriate handle() member function will be called)
return comms::processAllWithDispatch(buf, bufLen, m_frame, *this);
}
void ClientSession::sendMessage(Message& msg)
{
std::cout << "Sending message \"" << msg.name() << "\" with ID=" << (unsigned)msg.getId() << std::endl;
// The statement below uses polymorphic message name and ID retrievals.
std::vector<std::uint8_t> output;
// Use polymorphic serialization length calculation to reserve
// needed capacity
output.reserve(m_frame.length(msg));
// Serialize message into the buffer (including framing)
// The serialization uses polymorphic write functionality.
auto writeIter = std::back_inserter(output);
// The frame will use polymorphic message ID retrieval to
// prefix message payload with message ID
auto es = m_frame.write(msg, writeIter, output.max_size());
if (es == comms::ErrorStatus::UpdateRequired) {
auto updateIter = &output[0];
es = m_frame.update(updateIter, output.size());
}
if (es != comms::ErrorStatus::Success) {
assert(!"Write operation failed unexpectedly");
return;
}
// Send serialized message back
sendOutput(&output[0], output.size());
}
void ClientSession::doNextStage()
{
do {
if (CommsStage_NumOfValues <= m_currentStage) {
// Happens in first cycle
m_currentStage = static_cast<decltype(m_currentStage)>(0);
break;
}
m_currentStage =
static_cast<decltype(m_currentStage)>(
static_cast<unsigned>(m_currentStage) + 1);
if (m_currentStage < CommsStage_NumOfValues) {
break;
}
// Client execution is complete
getIo().stop();
return;
} while (false);
using NextSendFunc = void (ClientSession::*)();
static const NextSendFunc Map[] = {
/* CommsStage_Msg1 */ &ClientSession::sendMsg1,
};
static const std::size_t MapSize = std::extent<decltype(Map)>::value;
static_assert(MapSize == CommsStage_NumOfValues, "Invalid Map");
auto func = Map[m_currentStage];
(this->*func)(); // Call appropriate sending function
}
void ClientSession::sendMsg1()
{
Msg1 msg;
msg.field_f1().setS1();
msg.field_f2().value() = "hello";
sendMessage(msg);
}
SessionPtr Session::createClient(boost_wrap::io& io)
{
return SessionPtr(new ClientSession(io));
}
} // namespace cc_tutorial