b5d9e433
 Peter M. Groen
Fixed License Hea...
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/* ****************************************************************************
* Copyright 2019 Open Systems Development BV *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the "Software"), *
* to deal in the Software without restriction, including without limitation *
* the rights to use, copy, modify, merge, publish, distribute, sublicense, *
* and/or sell copies of the Software, and to permit persons to whom the *
* Software is furnished to do so, subject to the following conditions: *
* *
* The above copyright notice and this permission notice shall be included in *
* all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR *
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, *
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL *
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER *
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING *
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER *
* DEALINGS IN THE SOFTWARE. *
* ***************************************************************************/
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51becbde
Peter M. Groen
Committed the ent...
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#include "serverstate.h"
using namespace osdev::components::mqtt;
const std::string ServerState::s_identifier("ServerState");
std::atomic<StateChangeCallbackHandle> ServerState::s_nextServerStateCallbackHandle(1);
ServerState::ServerState(const IStateCallback* stateCallbackIf)
: sig_serverStateChanged()
, m_stateCallbackIf(stateCallbackIf)
, m_serverStateCallbackMap()
, m_state(StateEnum::Unknown)
{
}
ServerState::~ServerState()
{
try {
this->clearAllStateChangeCallbacks();
}
catch (...) {
}
}
StateChangeCallbackHandle ServerState::registerStateChangeCallback(const IStateCallback::SlotStateChange& cb)
{
const auto handle = s_nextServerStateCallbackHandle++;
m_serverStateCallbackMap.emplace(std::piecewise_construct,
std::make_tuple(handle),
std::make_tuple(sig_serverStateChanged.connect(cb)));
return handle;
}
void ServerState::unregisterStateChangeCallback(StateChangeCallbackHandle handle)
{
m_serverStateCallbackMap.erase(handle);
}
void ServerState::clearAllStateChangeCallbacks()
{
this->emitStateChanged(StateEnum::Unregister);
m_serverStateCallbackMap.clear();
}
void ServerState::emitStateChanged(StateEnum newState)
{
m_state = newState; ///< store state, to allow clients to retrieve the last received state.
if (nullptr != m_stateCallbackIf) {
sig_serverStateChanged(m_stateCallbackIf, newState);
}
}
StateEnum ServerState::state() const
{
return m_state;
}
std::string ServerState::stateCallbackClientId() const
{
static const std::string nullId = "null";
return (nullptr == m_stateCallbackIf) ? nullId : m_stateCallbackIf->clientId();
}
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