libgfaservices/mqttcl/mqttvar.h

// mqttvar.h :
//

#if !defined(AGD_MQTTVAR_H__CA5925ED_7757_407C_86F2_E7687DFFCCFA__INCLUDED_)
#define AGD_MQTTVAR_H__CA5925ED_7757_407C_86F2_E7687DFFCCFA__INCLUDED_

#include <stdint.h>
#include <string>
#include <vector>
#include <map>
#include <forward_list>
#include <utility>
#include <endian.h>
#include <gfa/gfaipc.h>
#include <typeinfo>
#include <typeindex>
#ifndef _LIBBUILD
#include <gfa/svc/common/strutil.h>
#include <gfa/svc/common/conv.h>
#include <gfa/svc/common/debug.h>
#include <gfa/svc/mqttcl/mqttmsg.h>
#include <gfa/svc/mqttcl/mqttjson.h>
#include <gfa/svc/mqttcl/mqttdbg.h>
#else	//	_LIBBUILD
#include "common/strutil.h"
#include "common/conv.h"
#include "common/debug.h"
#include "mqttmsg.h"
#include "mqttjson.h"
#include "mqttdbg.h"
#endif	//	_LIBBUILD

/////////////////////////////////////////////////////////////////////////////

#define MQTT_VALUE_BINLE				0x00000001
#define MQTT_VALUE_BINBE				0x00000002
#define MQTT_VALUE_JSON					0x00000004
#define MQTT_VALUE_PBUF					0x00000008
#define MQTT_VALUE_ALL_FORMATS			(MQTT_VALUE_BINLE | MQTT_VALUE_BINBE | MQTT_VALUE_JSON | MQTT_VALUE_PBUF)

#define MQTT_TOPIC_CMD_VALUE			"VALUE"
#define MQTT_TOPIC_VALUE_BINLE			"BINLE"
#define MQTT_TOPIC_VALUE_BINBE			"BINBE"
#define MQTT_TOPIC_VALUE_JSON			"JSON"
#define MQTT_TOPIC_VALUE_PBUF			"PBUF"

#ifdef _DEBUG
#define MQTT_JSON_OUTPUT_FLAGS			JSON_MAX_INDENT
#else	//	_DEBUG
#define MQTT_JSON_OUTPUT_FLAGS			JSON_COMPACT
#endif	//	_DEBUG

#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
#define _UTF_16							"UTF-16LE//"
#define _UTF_32							"UTF-32LE//"
#define _UNICODE						"WCHAR_T//"
#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
#define _UTF_16							"UTF-16BE//"
#define _UTF_32							"UTF-32BE//"
#define _UNICODE						"WCHAR_T//"
#else	//	__BYTE_ORDER__
#error Invalid or unsupported byte order!
#endif	//	__BYTE_ORDER__

#define MQTTCL_MIN_QOS					0
#define MQTTCL_MAX_QOS					2

#ifdef __cplusplus
/////////////////////////////////////////////////////////////////////////////

template <typename T>
static void _swap_val(T &v)
{
	// should static assert that T is a POD
	if(sizeof(T) > 1)
	{
		char &raw = reinterpret_cast<char&>(v);
		std::reverse(&raw, &raw + sizeof(T));
	}
}

template <typename T>
static const T* _copy_swap_string_chars(const T *s, T *v, size_t cch)
{
	if(sizeof(T) > 1 && cch > 0)
	{
		for(T *pv = v; cch > 0; --cch, ++pv, ++s)
		{
			*pv = *s;
			if(*pv)
				_swap_val(*pv);
			else
				break;
		}
		return v;
	}
	else
    {
        memcpy(v, s, cch);
        return v;
	}
}

/////////////////////////////////////////////////////////////////////////////
// mqttvar.h - Declarations:

class CMqttVar;

class CMqttVarTable
{
public:
	typedef bool (*_PFNCMP)(const char*, const char*);

public:
	CMqttVarTable(void);
	virtual ~CMqttVarTable(void);

	void AddVar(CMqttVar *pv);
	CMqttVar* Find(const char *key) const;

	inline size_t size(void) const {
		return m_map.size();}

	bool AddToPubTable(CMqttVar *pv);
	bool RemoveFromPubTable(CMqttVar *pv);
	void CheckShmAndPublish(const char *pszTopicDevID, const char *pszTopicShmID, CMqttMessageQueue &rmq, int &nLocks);
	void DumpPubEnabled(uint32_t nPubMask = MQTT_VALUE_ALL_FORMATS);
	void TracePubVar(const char *pszPath, uint32_t nMask, int nQos, bool bRetained);

private:
	std::map<const char*, CMqttVar*, _PFNCMP> m_map;
	std::map<const char*, CMqttVar*, _PFNCMP> m_pub;
};

/////////////////////////////////////////////////////////////////////////////

class CMqttVar
{
public:
	CMqttVar(CMqttVar &&m) noexcept :
						m_hShm(std::move(m.m_hShm)),
						m_pParent(std::move(m.m_pParent)),
						m_nPubMask(std::move(m.m_nPubMask)),
						m_nPubMaskForcedOnce(m_nPubMask),
						m_path(std::move(m.m_path)),
						m_pszPath(m_path.c_str()),
						m_nCbVarpath(std::move(m.m_nCbVarpath)),
						m_name(std::move(m.m_name)),
						m_nIndex(std::move(m.m_nIndex)),
						m_nQos(std::move(m.m_nQos)),
						m_bRetain(std::move(m.m_bRetain)),
						m_nRetainedPubMask(std::move(m.m_nRetainedPubMask))
	{
	}

	CMqttVar(HSHM hShm, const char *pszName, int nIndex, uint32_t nPubMask, int nQos, bool bRetain, CMqttVar *pParent) :
						m_hShm(hShm),
						m_pParent(pParent),
						m_nPubMask(nPubMask),
						m_nPubMaskForcedOnce(m_nPubMask),
						m_pszPath(NULL),
						m_nCbVarpath(0),
						m_name(pszName ? pszName : ""),
						m_nIndex(nIndex),
						m_nQos(nQos),
						m_bRetain(bRetain),
						m_nRetainedPubMask(0)
	{
	}

	virtual ~CMqttVar(void)
	{
	}

public:
	virtual void CheckShmAndPublish(const char *pszTopicDevID, const char *pszTopicShmID, CMqttMessageQueue &rmq, int &nLocks) = 0;
	virtual bool SetShmValue(uint32_t nValFormat, CMqttMessage *pMsg, int &nLocks) {
		return false;
	}

	virtual void CreateMembersTable(CMqttVarTable &vt)	{
		vt.AddVar(this);}

	virtual bool EnablePublish(uint32_t nMask, CMqttVarTable *pvt) {
			if((m_nPubMask & nMask) != nMask)
			{
#if _DUMP_CONTROL_CHANGED
				uint32_t nEnable = ((nMask ^ m_nPubMask) & nMask);
#endif	//	_DUMP_CONTROL_CHANGED
				m_nPubMaskForcedOnce |= ((nMask ^ m_nPubMask) & nMask);
				m_nPubMask |= nMask;

				if(pvt)
				{
					pvt->AddToPubTable(this);
#if _TRACK_TIMES
					g_nDbgCounter1++;
#endif	//	_TRACK_TIMES
#if _DUMP_CONTROL_CHANGED
					TraceFormatChange(nEnable, true);
#endif	//	_DUMP_CONTROL_CHANGED
					return true;
				}
			}
			return false;
		}

	virtual bool DisablePublish(uint32_t nMask, CMqttVarTable *pvt) {
			if(m_nPubMask & nMask)
			{
#if _DUMP_CONTROL_CHANGED
				uint32_t nDisable = (((~nMask) ^ m_nPubMask) & nMask);
#endif	//	_DUMP_CONTROL_CHANGED
				m_nPubMask &= ~nMask;
				m_nPubMaskForcedOnce &= ~nMask;

				if(pvt)
				{
					pvt->RemoveFromPubTable(this);
#if _DUMP_CONTROL_CHANGED
					TraceFormatChange(nDisable, false);
#endif	//	_DUMP_CONTROL_CHANGED
					return true;
				}
			}
			return false;
		}

	bool PublishEnabled(uint32_t nMask = MQTT_VALUE_ALL_FORMATS) const {
		return !!(m_nPubMask & nMask);}

	uint32_t GetPublishMask(void) const {
		return m_nPubMask;}

	uint32_t GetForcedPublishMask(void) const {
		return m_nPubMaskForcedOnce;}

	void ClearForcedPublishMask(void) {
		m_nPubMaskForcedOnce = 0;}

	virtual void InitPath(CMqttVar *pParent, const char *pszMemberName, int nIndex = -1) {
		CreatePath(pParent, pszMemberName, nIndex, m_path);
		m_pszPath = m_path.c_str();
		m_nCbVarpath = m_path.length();
	}

	virtual const char* GetPath(void) const {
		return m_pszPath;}
	
	int GetQoS(void) const {
		return m_nQos;}

	virtual bool SetQoS(int nQos) {
		if(nQos < MQTTCL_MIN_QOS)
			nQos = MQTTCL_MIN_QOS;
		else if(nQos > MQTTCL_MAX_QOS)
			nQos = MQTTCL_MAX_QOS;
		if(m_nQos != nQos) {
			TraceQOSChange(m_nQos, nQos);
			m_nQos = nQos;
			return true;
		}
		return false;
	}
	
	bool GetRetained(void) const {
		return m_bRetain;}
	
	virtual bool SetRetained(bool bRetain) {
		if(m_bRetain != bRetain) {
			m_bRetain = bRetain;
			TraceRetainChange(bRetain);
			return true;
		}
		else
			return false;
	}

	void SetRetainedPubMask(uint32_t nMask) {
		m_nRetainedPubMask |= nMask;
	}

	virtual void RemoveRetained(const char *pszTopicDevID, const char *pszTopicShmID, CMqttMessageQueue &rmq, bool bForce)
	{
		if(!m_bRetain)
		{
			std::string s;
			CMqttMessage *pMsg;	

			if((m_nRetainedPubMask & MQTT_VALUE_BINLE) || bForce)
			{
				s = CreateTopic(pszTopicDevID, pszTopicShmID, MQTT_TOPIC_VALUE_BINLE, MQTT_TOPIC_CMD_VALUE);
				pMsg = CMqttMessage::CreateRemoveRetainedMessage(s.c_str(), GetQoS());
				rmq.Push(pMsg);
				m_nRetainedPubMask &= ~MQTT_VALUE_BINLE;
			}

			if((m_nRetainedPubMask & MQTT_VALUE_BINBE) || bForce)
			{
				s = CreateTopic(pszTopicDevID, pszTopicShmID, MQTT_TOPIC_VALUE_BINBE, MQTT_TOPIC_CMD_VALUE);
				pMsg = CMqttMessage::CreateRemoveRetainedMessage(s.c_str(), GetQoS());
				rmq.Push(pMsg);
				m_nRetainedPubMask &= ~MQTT_VALUE_BINBE;
			}

			if((m_nRetainedPubMask & MQTT_VALUE_JSON) || bForce)
			{
				s = CreateTopic(pszTopicDevID, pszTopicShmID, MQTT_TOPIC_VALUE_JSON, MQTT_TOPIC_CMD_VALUE);
				pMsg = CMqttMessage::CreateRemoveRetainedMessage(s.c_str(), GetQoS());
				rmq.Push(pMsg);
				m_nRetainedPubMask &= ~MQTT_VALUE_JSON;
			}

			if((m_nRetainedPubMask & MQTT_VALUE_PBUF) || bForce)
			{
				s = CreateTopic(pszTopicDevID, pszTopicShmID, MQTT_TOPIC_VALUE_PBUF, MQTT_TOPIC_CMD_VALUE);
				pMsg = CMqttMessage::CreateRemoveRetainedMessage(s.c_str(), GetQoS());
				rmq.Push(pMsg);
				m_nRetainedPubMask &= ~MQTT_VALUE_PBUF;
			}
		}
	}

protected:
	static void CreatePath(CMqttVar *pParent, const char *pszMemberName, int nIndex, std::string &rPath)
	{
		char szIndex[32] = {0};

		if(!pszMemberName || !*pszMemberName)
			pszMemberName = "/";

		if(nIndex >= 0)
		{
			sprintf(szIndex, "/%d", nIndex);
		}

		if(pParent)
		{
			rPath = pParent->GetPath();
			auto len = rPath.size();

			if(len > 0)
			{
				auto rend = rPath.rbegin();
				if(*rend != '/')
					rPath += "/";
			}

			rPath += pszMemberName;
			rPath += szIndex;
		}
		else
		{
			rPath = pszMemberName;
			rPath += szIndex;
		}
	}

	std::string CreateTopic(const char *pszTopicDevID, const char *pszTopicShmID, const char *pszValueFormat, const char *pszTopicCmd)
	{
		return ::formatString("%s/%s/%s/%s%s", pszTopicDevID, pszTopicShmID, pszValueFormat, pszTopicCmd, m_pszPath);
	}

	void Lock(int &nLocks)
	{
		if(!nLocks)
		{
			::GfaIpcLockSHM(m_hShm);
			++nLocks;
		}
	}

	void Unlock(int &nLocks)
	{
		if(nLocks)
		{
			--nLocks;
			::GfaIpcUnlockSHM(m_hShm);
		}
	}

	const char* GetName(void) const {
		return m_name.c_str();}

	int GetIndex(void) const {
		return m_nIndex;}

private:
	void TraceFormatChange(uint32_t nMask, bool bOn)
	{
#ifdef _DUMP_CONTROL_CHANGED
		if(m_pszPath && nMask)
		{
			int nCount = 0;
			TRACE("%s ==> %s ", m_pszPath, bOn ? "ON" : "OFF");

			if(nMask & MQTT_VALUE_BINLE)
			{
				TRACE("%s", MQTT_TOPIC_VALUE_BINLE);
				++nCount;
			}

			if(nMask & MQTT_VALUE_BINBE)
			{
				if(nCount)
					TRACE(", ");
				TRACE("%s", MQTT_TOPIC_VALUE_BINBE);
				++nCount;
			}

			if(nMask & MQTT_VALUE_JSON)
			{
				if(nCount)
					TRACE(", ");
				TRACE("%s", MQTT_TOPIC_VALUE_JSON);
				++nCount;
			}

			if(nMask & MQTT_VALUE_PBUF)
			{
				if(nCount)
					TRACE(", ");
				TRACE("%s", MQTT_TOPIC_VALUE_PBUF);
				++nCount;
			}

			TRACE("\n");
		}
#endif	//	_DUMP_CONTROL_CHANGED
	}

	void TraceQOSChange(int nQosOld, int nQosNew)
	{
#ifdef _DUMP_CONTROL_CHANGED
		if(m_pszPath)
		{
			TRACE("%s ==> QOS: %d -> %d\n", m_pszPath, nQosOld, nQosNew);
		}
#endif	//	_DUMP_CONTROL_CHANGED
	}

	void TraceRetainChange(bool bRetained)
	{
#ifdef _DUMP_CONTROL_CHANGED
		if(m_pszPath)
		{
			TRACE("%s ==> Retain: %s\n", m_pszPath, bRetained ? "true" : "false");
		}
#endif	//	_DUMP_CONTROL_CHANGED
	}

private:
    HSHM m_hShm;
    CMqttVar *m_pParent;
    uint32_t m_nPubMask;
    uint32_t m_nPubMaskForcedOnce;
    std::string m_path;
    const char *m_pszPath;
    size_t m_nCbVarpath;
    std::string m_name;
    int m_nIndex;
    int m_nQos;
    bool m_bRetain;
    uint32_t m_nRetainedPubMask;
};

/////////////////////////////////////////////////////////////////////////////

template <typename T>
class CMqttVariable : public CMqttVar
{
public:
	CMqttVariable(CMqttVariable &&m) noexcept :
					CMqttVar(std::move(m)),
					m_pData(std::move(m.m_pData)),
					m_pShadow(std::move(m.m_pShadow)),
					m_bIsBool(std::move(m.m_bIsBool))
	{
	}

	CMqttVariable(void *pData, void *pShadow, HSHM hShm, const char *pszName, int nIndex, uint32_t nPubMask, int nQos, bool bRetain, CMqttVar *pParent) :
					CMqttVar(hShm, pszName, nIndex, nPubMask, nQos, bRetain, pParent),
					m_pData((volatile T*)pData),
					m_pShadow((T*)pShadow),
					m_bIsBool(std::type_index(typeid(T)) == std::type_index(typeid(bool)))
	{
		ASSERT(m_pData);
		ASSERT(m_pShadow);
		ASSERT(hShm);
		int nLocks = 0;
		Lock(nLocks);
		*m_pShadow = *m_pData;
		Unlock(nLocks);
	}

	/////////////////////////////////////////////////////////////////////////

public:
	virtual void CheckShmAndPublish(const char *pszTopicDevID, const char *pszTopicShmID, CMqttMessageQueue &rmq, int &nLocks)
	{
		uint32_t nPubMaskForcedOnce = GetForcedPublishMask();
		ClearForcedPublishMask();

		if(!PublishEnabled())
			return;
		if(!UpdateShadowBuffer(nLocks))
		{
			if(nPubMaskForcedOnce & MQTT_VALUE_BINLE)
				PublishBinLE(pszTopicDevID, pszTopicShmID, rmq, nLocks);
			if(nPubMaskForcedOnce & MQTT_VALUE_BINBE)
				PublishBinBE(pszTopicDevID, pszTopicShmID, rmq, nLocks);
			if(nPubMaskForcedOnce & MQTT_VALUE_JSON)
				PublishJson(pszTopicDevID, pszTopicShmID, rmq, nLocks);
			if(nPubMaskForcedOnce & MQTT_VALUE_PBUF)
				PublishPBuf(pszTopicDevID, pszTopicShmID, rmq, nLocks);
		}
		else
		{
			if(PublishEnabled(MQTT_VALUE_BINLE))
				PublishBinLE(pszTopicDevID, pszTopicShmID, rmq, nLocks);
			if(PublishEnabled(MQTT_VALUE_BINBE))
				PublishBinBE(pszTopicDevID, pszTopicShmID, rmq, nLocks);
			if(PublishEnabled(MQTT_VALUE_JSON))
				PublishJson(pszTopicDevID, pszTopicShmID, rmq, nLocks);
			if(PublishEnabled(MQTT_VALUE_PBUF))
				PublishPBuf(pszTopicDevID, pszTopicShmID, rmq, nLocks);
		}
	}

	virtual bool SetShmValue(uint32_t nValFormat, CMqttMessage *pMsg, int &nLocks) {
		switch(nValFormat)
		{
		case MQTT_VALUE_BINLE:
			return SetShmValueLE(pMsg, nLocks);
		case MQTT_VALUE_BINBE:
			return SetShmValueBE(pMsg, nLocks);
		case MQTT_VALUE_JSON:
			return SetShmValueJson(pMsg, nLocks);
		case MQTT_VALUE_PBUF:
			return SetShmValuePBuf(pMsg, nLocks);
		default:
			break;
		}
		return false;
	}

	/////////////////////////////////////////////////////////////////////////

private:
	bool SetShmValueLE(CMqttMessage *pMsg, int &nLocks)
	{
		if(pMsg->payload && ((size_t)pMsg->payloadlen == sizeof(T)))
		{
			T val = *(T*)pMsg->payload;
#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
			_swap_val(val);
#endif	//	__BYTE_ORDER__
			Lock(nLocks);
			*m_pData = val;
			Unlock(nLocks);
			return true;
		}
		return false;
	}

	bool SetShmValueBE(CMqttMessage *pMsg, int &nLocks)
	{
		if(pMsg->payload && ((size_t)pMsg->payloadlen == sizeof(T)))
		{
			T val = *(T*)pMsg->payload;
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
			_swap_val(val);
#endif	//	__BYTE_ORDER__
			Lock(nLocks);
			*m_pData = val;
			Unlock(nLocks);
			return true;
		}
		return false;
	}

	bool SetShmValueJson(CMqttMessage *pMsg, int &nLocks)
	{
		bool bRet = false;

		if(pMsg)
		{
			T val;
			CJson_t jtRoot, jtVal;
			std::string sErr;

			if(pMsg->GetPayloadAsJSON(jtRoot, sErr))
			{
				if(jtRoot.GetValue("value", jtVal))
				{
					const json_t *pjt = jtVal;

					if(m_bIsBool)
					{
						if(json_is_boolean(pjt))
						{
							val = (T)json_boolean_value(pjt);
							bRet = true;
						}
						else if(json_is_integer(pjt))
						{
							val = !!::json_integer_value(pjt);
							bRet = true;
						}
					}
					else if(std::is_integral<T>::value)
					{
						if(json_is_integer(pjt))
						{
							val = (T)::json_integer_value(pjt);
							bRet = true;
						}
						else if(json_is_boolean(pjt))
						{
							val = (T)(json_boolean_value(pjt) ? 1 : 0);
							bRet = true;
						}
					}
					else if(std::is_floating_point<T>::value)
					{
						if(json_is_real(pjt))
						{
							val = (T)::json_real_value(pjt);
							bRet = true;
						}
						else if(json_is_integer(pjt))
						{
							val = (T)::json_integer_value(pjt);
							bRet = true;
						}
						else if(json_is_boolean(pjt))
						{
							val = (T)(json_boolean_value(pjt) ? 1 : 0);
							bRet = true;
						}
					}
					
					if(bRet)
					{
						Lock(nLocks);
						*m_pData = val;
						Unlock(nLocks);
					}
				}
			}
		}
		return bRet;
	}

	bool SetShmValuePBuf(CMqttMessage *pMsg, int &nLocks)
	{
		TRACE("%s:\n\tProtocol buffers not implemented!\n", GetPath());
		return false;
	}

	/////////////////////////////////////////////////////////////////////////

	void PublishBinLE(const char *pszTopicDevID, const char *pszTopicShmID, CMqttMessageQueue &rmq, int &nLocks)
	{
		std::string s = CreateTopic(pszTopicDevID, pszTopicShmID, MQTT_TOPIC_VALUE_BINLE, MQTT_TOPIC_CMD_VALUE);
#if _RETURN_BIN_AS_STRING
		std::string v = toString(*m_pShadow);
		CMqttMessage *pMsg = CMqttMessage::CreateMessage(s.c_str(), v.c_str(), v.length(), GetQoS(), GetRetained());
#else	//	_RETURN_BIN_AS_STRING
		T val = *m_pShadow;
#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
		_swap_val(val);
#endif	//	__BYTE_ORDER__
		CMqttMessage *pMsg = CMqttMessage::CreateMessage(s.c_str(), &val, sizeof(val), GetQoS(), GetRetained());
#endif	//	_RETURN_BIN_AS_STRING
		rmq.Push(pMsg);
		if(GetRetained())
			SetRetainedPubMask(MQTT_VALUE_BINLE);
	}

	void PublishBinBE(const char *pszTopicDevID, const char *pszTopicShmID, CMqttMessageQueue &rmq, int &nLocks)
	{
		std::string s = CreateTopic(pszTopicDevID, pszTopicShmID, MQTT_TOPIC_VALUE_BINBE, MQTT_TOPIC_CMD_VALUE);
#if _RETURN_BIN_AS_STRING
		std::string v = toString(*m_pShadow);
		CMqttMessage *pMsg = CMqttMessage::CreateMessage(s.c_str(), v.c_str(), v.length(), GetQoS(), GetRetained());
#else	//	_RETURN_BIN_AS_STRING
		T val = *m_pShadow;
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
		_swap_val(val);
#endif	//	__BYTE_ORDER__
		CMqttMessage *pMsg = CMqttMessage::CreateMessage(s.c_str(), &val, sizeof(val), GetQoS(), GetRetained());
#endif	//	_RETURN_BIN_AS_STRING
		rmq.Push(pMsg);
		if(GetRetained())
			SetRetainedPubMask(MQTT_VALUE_BINBE);
	}

	void PublishJson(const char *pszTopicDevID, const char *pszTopicShmID, CMqttMessageQueue &rmq, int &nLocks)
	{
		std::string s = CreateTopic(pszTopicDevID, pszTopicShmID, MQTT_TOPIC_VALUE_JSON, MQTT_TOPIC_CMD_VALUE);
		CJson_t jtValue(json_object());
		CJson_t jtPath(json_string(GetPath()));
		CJson_t jtIndex(json_integer(GetIndex()));
		CJson_t jtName(json_string(GetName()));
		CJson_t jtVal(GetJsonValue());
		json_object_set(jtValue, "path", jtPath);
		json_object_set(jtValue, "index", jtIndex);
		json_object_set(jtValue, "name", jtName);
		json_object_set(jtValue, "value", jtVal);
		char *pszJson = json_dumps(jtValue, MQTT_JSON_OUTPUT_FLAGS);
		std::string v = pszJson;
		free(pszJson);
		CMqttMessage *pMsg = CMqttMessage::CreateMessage(s.c_str(), v.c_str(), v.length(), GetQoS(), GetRetained());
		rmq.Push(pMsg);
		if(GetRetained())
			SetRetainedPubMask(MQTT_VALUE_JSON);
	}

	void PublishPBuf(const char *pszTopicDevID, const char *pszTopicShmID, CMqttMessageQueue &rmq, int &nLocks)
	{
		std::string s = CreateTopic(pszTopicDevID, pszTopicShmID, MQTT_TOPIC_VALUE_PBUF, MQTT_TOPIC_CMD_VALUE);
		TRACE("%s:\n\tProtocol buffers not implemented!\n", s.c_str());
	}

	std::string toString(T v)
	{
		if(std::is_integral<T>::value)
		{
			if(std::is_signed<T>::value)
			{
				long long r = (long long)v;
				return formatString("%lld", r);
			}
			else if(std::is_unsigned<T>::value)
			{
				unsigned long long r = (unsigned long long)v;
				return formatString("%llu", r);
			}
		}
		else if(std::is_floating_point<T>::value)
		{
			double r = (double)v;
			return formatString("%.20g", r);
		}

		return "";
	}

	json_t* GetJsonValue(void) const
	{
		if(std::is_integral<T>::value)
			return m_bIsBool ? json_boolean(!!*m_pShadow) : ::json_integer((json_int_t)*m_pShadow);
		else if(std::is_floating_point<T>::value)
			return ::json_real((double)*m_pShadow);
		ASSERT(false);
		return NULL;
	}

	bool UpdateShadowBuffer(int &nLocks)
	{
		Lock(nLocks);
		bool bChanged = *m_pShadow != *m_pData;
		if(bChanged)
		{
			*m_pShadow = *m_pData;
			TRACE("Changed: %s\n", GetPath());
		}
		Unlock(nLocks);
		return bChanged;
	}

private:
    volatile T *m_pData;
    T *m_pShadow;
    bool m_bIsBool;
};

/////////////////////////////////////////////////////////////////////////////

template <typename T, int ST>
class CMqttStringVariable : public CMqttVar
{
public:
	typedef enum
	{
		VT_Invalid,	// 0
		VT_Latin1,	// 1
		VT_UTF_8,	// 2
		VT_UTF_16,	// 3
		VT_UTF_32,	// 4
		VT_Unicode,	// 5
		VT_Last
	}VT;

public:
	CMqttStringVariable(CMqttStringVariable &&m) noexcept :
						CMqttVar(std::move(m)),
						m_nCChBuffer(std::move(m.m_nCChBuffer)),
						m_nCbBuffer(std::move(m.m_nCbBuffer)),
						m_nCbString(std::move(m.m_nCbString)),
						m_pszData(std::move(m.m_pszData)),
						m_pszShadow(std::move(m.m_pszShadow))
	{
	}

	CMqttStringVariable(void *pData, void *pShadow, HSHM hShm, const char *pszName, size_t nCChBuffer, int nIndex, uint32_t nPubMask, int nQos, bool bRetain, CMqttVar *pParent) :
						CMqttVar(hShm, pszName, nIndex, nPubMask, nQos, bRetain, pParent),
						m_nCChBuffer(nCChBuffer),
						m_nCbBuffer(nCChBuffer * sizeof(T)),
						m_nCbString(0),
						m_pszData((T*)pData),
						m_pszShadow((T*)pShadow)
	{
		ASSERT(m_pszData);
		ASSERT(m_pszShadow);
		ASSERT(m_nCChBuffer > 0);
		int nLocks = 0;
		Lock(nLocks);
		zeroTerm(m_nCChBuffer - 1);
		m_nCbString = slen(m_pszData) * sizeof(T);
		memcpy(m_pszShadow, (const void*)m_pszData, m_nCbBuffer);
		Unlock(nLocks);
	}

public:
	virtual void CheckShmAndPublish(const char *pszTopicDevID, const char *pszTopicShmID, CMqttMessageQueue &rmq, int &nLocks)
	{
		uint32_t nPubMaskForcedOnce = GetForcedPublishMask();
		ClearForcedPublishMask();

		if(!PublishEnabled())
			return;
		if(!UpdateShadowBuffer(nLocks))
		{
			if(nPubMaskForcedOnce & MQTT_VALUE_BINLE)
				PublishBinLE(pszTopicDevID, pszTopicShmID, rmq, nLocks);
			if(nPubMaskForcedOnce & MQTT_VALUE_BINBE)
				PublishBinBE(pszTopicDevID, pszTopicShmID, rmq, nLocks);
			if(nPubMaskForcedOnce & MQTT_VALUE_JSON)
				PublishJson(pszTopicDevID, pszTopicShmID, rmq, nLocks);
			if(nPubMaskForcedOnce & MQTT_VALUE_PBUF)
				PublishPBuf(pszTopicDevID, pszTopicShmID, rmq, nLocks);
		}
		else
		{
			if(PublishEnabled(MQTT_VALUE_BINLE))
				PublishBinLE(pszTopicDevID, pszTopicShmID, rmq, nLocks);
			if(PublishEnabled(MQTT_VALUE_BINBE))
				PublishBinBE(pszTopicDevID, pszTopicShmID, rmq, nLocks);
			if(PublishEnabled(MQTT_VALUE_JSON))
				PublishJson(pszTopicDevID, pszTopicShmID, rmq, nLocks);
			if(PublishEnabled(MQTT_VALUE_PBUF))
				PublishPBuf(pszTopicDevID, pszTopicShmID, rmq, nLocks);
		}
	}

	virtual bool SetShmValue(uint32_t nValFormat, CMqttMessage *pMsg, int &nLocks) {
		switch(nValFormat)
		{
		case MQTT_VALUE_BINLE:
			return SetShmValueLE(pMsg, nLocks);
		case MQTT_VALUE_BINBE:
			return SetShmValueBE(pMsg, nLocks);
		case MQTT_VALUE_JSON:
			return SetShmValueJson(pMsg, nLocks);
		case MQTT_VALUE_PBUF:
			return SetShmValuePBuf(pMsg, nLocks);
		default:
			break;
		}
		return false;
	}

private:
	bool SetShmValueLE(CMqttMessage *pMsg, int &nLocks)
	{
		if(pMsg->payload && pMsg->payloadlen > 0)
		{
			if((size_t)pMsg->payloadlen / sizeof(T) < m_nCChBuffer)
			{
				Lock(nLocks);
				m_nCbString = (size_t)pMsg->payloadlen;
#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
				_copy_swap_string_chars((const T*)pMsg->payload, (T*)m_pszData, m_nCbString / sizeof(T));
#else	//	__BYTE_ORDER__
				memcpy((void*)m_pszData, pMsg->payload, m_nCbString);
#endif	//	__BYTE_ORDER__
				zeroTerm(m_nCbString / sizeof(T));
				Unlock(nLocks);
				return true;
			}
		}
		else
		{
			Lock(nLocks);
			*m_pszData = '\0';
			m_nCbString = 0;
			Unlock(nLocks);
			return true;
		}
		return false;
	}

	bool SetShmValueBE(CMqttMessage *pMsg, int &nLocks)
	{
		if(pMsg->payload && pMsg->payloadlen > 0)
		{
			if((size_t)pMsg->payloadlen / sizeof(T) < m_nCChBuffer)
			{
				Lock(nLocks);
				m_nCbString = (size_t)pMsg->payloadlen;
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
				_copy_swap_string_chars((const T*)pMsg->payload, (T*)m_pszData, m_nCbString / sizeof(T));
#else	//	__BYTE_ORDER__
				memcpy((void*)m_pszData, pMsg->payload, m_nCbString);
#endif	//	__BYTE_ORDER__
				zeroTerm(m_nCbString / sizeof(T));
				Unlock(nLocks);
				return true;
			}
		}
		else
		{
			Lock(nLocks);
			*m_pszData = '\0';
			m_nCbString = 0;
			Unlock(nLocks);
			return true;
		}
		return false;
	}

	bool SetShmValueJson(CMqttMessage *pMsg, int &nLocks)
	{
		if(pMsg)
		{
			CJson_t jtRoot, jtVal;
			std::string sErr;

			if(pMsg->GetPayloadAsJSON(jtRoot, sErr))
			{
				if(jtRoot.GetValue("value", jtVal))
				{
					const json_t *pjt = jtVal;

					if(json_is_string(pjt))
					{
						std::string s(::json_string_value(jtVal));
						if(s.length() > 0)
						{
							Lock(nLocks);
							if(fromUTF8(s.c_str(), s.length(), (T*)m_pszData, m_nCbBuffer))
								m_nCbString = slen(m_pszData) * sizeof(T);
							Unlock(nLocks);
						}
						else
						{
							Lock(nLocks);
							*m_pszData = '\0';
							m_nCbString = 0;
							Unlock(nLocks);
						}
						return true;
					}
				}
			}
		}
		return false;
	}

	bool SetShmValuePBuf(CMqttMessage *pMsg, int &nLocks)
	{
		TRACE("%s:\n\tProtocol buffers not implemented!\n", GetPath());
		return false;
	}

	void PublishBinLE(const char *pszTopicDevID, const char *pszTopicShmID, CMqttMessageQueue &rmq, int &nLocks)
	{
		std::string s = CreateTopic(pszTopicDevID, pszTopicShmID, MQTT_TOPIC_VALUE_BINLE, MQTT_TOPIC_CMD_VALUE);

#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
		T szBuf[m_nCChBuffer];
		CMqttMessage *pMsg = CMqttMessage::CreateMessage(s.c_str(), _copy_swap_string_chars(m_pszShadow, szBuf, m_nCChBuffer), m_nCbString, GetQoS(), GetRetained());
#else	//	__BYTE_ORDER__
		CMqttMessage *pMsg = CMqttMessage::CreateMessage(s.c_str(), m_pszShadow, m_nCbString, GetQoS(), GetRetained());
#endif	//	__BYTE_ORDER__
		rmq.Push(pMsg);
	}

	void PublishBinBE(const char *pszTopicDevID, const char *pszTopicShmID, CMqttMessageQueue &rmq, int &nLocks)
	{
		std::string s = CreateTopic(pszTopicDevID, pszTopicShmID, MQTT_TOPIC_VALUE_BINBE, MQTT_TOPIC_CMD_VALUE);
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
		T szBuf[m_nCChBuffer];
		CMqttMessage *pMsg = CMqttMessage::CreateMessage(s.c_str(), _copy_swap_string_chars(m_pszShadow, szBuf, m_nCChBuffer), m_nCbString, GetQoS(), GetRetained());
#else	//	__BYTE_ORDER__
		CMqttMessage *pMsg = CMqttMessage::CreateMessage(s.c_str(), m_pszShadow, m_nCbString, GetQoS(), GetRetained());
#endif	//	__BYTE_ORDER__
		rmq.Push(pMsg);
	}

	void PublishJson(const char *pszTopicDevID, const char *pszTopicShmID, CMqttMessageQueue &rmq, int &nLocks)
	{
		std::string s = CreateTopic(pszTopicDevID, pszTopicShmID, MQTT_TOPIC_VALUE_JSON, MQTT_TOPIC_CMD_VALUE);
		CJson_t jtValue(json_object());
		CJson_t jtPath(json_string(GetPath()));
		CJson_t jtIndex(json_integer(GetIndex()));
		CJson_t jtName(json_string(GetName()));
		CJson_t jtVal(GetJsonValue());
		json_object_set(jtValue, "path", jtPath);
		json_object_set(jtValue, "index", jtIndex);
		json_object_set(jtValue, "name", jtName);
		json_object_set(jtValue, "value", jtVal);
		char *pszJson = json_dumps(jtValue, MQTT_JSON_OUTPUT_FLAGS);
		std::string v = pszJson;
		free(pszJson);
		CMqttMessage *pMsg = CMqttMessage::CreateMessage(s.c_str(), v.c_str(), v.length(), GetQoS(), GetRetained());
		rmq.Push(pMsg);
	}

	void PublishPBuf(const char *pszTopicDevID, const char *pszTopicShmID, CMqttMessageQueue &rmq, int &nLocks)
	{
		std::string s = CreateTopic(pszTopicDevID, pszTopicShmID, MQTT_TOPIC_VALUE_PBUF, MQTT_TOPIC_CMD_VALUE);
		TRACE("%s:\n\tProtocol buffers not implemented!\n", s.c_str());
	}

	json_t* GetJsonValue(void) const
	{
		char szBuf[m_nCbBuffer * 4];
		const char *pszUtf8 = toUTF8(m_pszShadow, m_nCbString, szBuf, sizeof(szBuf));
		if(pszUtf8)
			return json_string(pszUtf8);
		return NULL;
	}

	const char* toUTF8(const T *pszIn, size_t nCbIn, char *pszOut, size_t nCbOut) const
	{
		switch(ST)
		{
		case VT_Latin1:
			Latin1ToUtf8(pszIn, nCbIn, pszOut, nCbOut);
			break;
		case VT_UTF_8:
			strncpy(pszOut, (const char*)pszIn, nCbOut - 1);
			pszOut[nCbOut - 1] = '\0';
			break;
		case VT_UTF_16:
			EncToUtf8(_UTF_16, pszIn, nCbIn, pszOut, nCbOut);
			break;
		case VT_UTF_32:
			EncToUtf8(_UTF_32, pszIn, nCbIn, pszOut, nCbOut);
			break;
		case VT_Unicode:
			EncToUtf8(_UNICODE, pszIn, nCbIn, pszOut, nCbOut);
			break;
		default:
			ASSERT(false);
			return NULL;
		}
		
		return pszOut;
	}

	const T* fromUTF8(const char *pszIn, size_t nCbIn, T *pszOut, size_t nCbOut) const
	{
		size_t nRet;

		switch(ST)
		{
		case VT_Latin1:
			nRet = Utf8ToLatin1(pszIn, nCbIn, pszOut, nCbOut);
			pszOut[nRet / sizeof(T)] = T('\0');
			break;
		case VT_UTF_8:
			strncpy((char*)pszOut, pszIn, nCbOut - 1);
			pszOut[nCbOut - 1] = T('\0');
			break;
		case VT_UTF_16:
			nRet = Utf8ToUtf16(pszIn, nCbIn, (char16_t*)pszOut, nCbOut);
			pszOut[nRet / sizeof(T)] = T('\0');
			break;
		case VT_UTF_32:
			nRet = Utf8ToUtf32(pszIn, nCbIn, (char32_t*)pszOut, nCbOut);
			pszOut[nRet / sizeof(T)] = T('\0');
			break;
		case VT_Unicode:
			nRet = Utf8ToWcs(pszIn, nCbIn, (wchar_t*)pszOut, nCbOut);
			pszOut[nRet / sizeof(T)] = T('\0');
			break;
		default:
			ASSERT(false);
			return NULL;
		}
		
		return pszOut;
	}

	size_t slen(volatile const T *s)
	{
		volatile const T *p = s;
		while(*p) ++p;
		return p - s;
	}

	void zeroTerm(size_t at)
	{
		m_pszData[at] = (T)'\0';
	}

	bool UpdateShadowBuffer(int &nLocks)
	{
		Lock(nLocks);
		bool bChanged = !!memcmp(m_pszShadow, (const void*)m_pszData, m_nCbString + sizeof(T));
		if(bChanged)
		{
			zeroTerm(m_nCChBuffer - 1);
			m_nCbString = slen(m_pszData) * sizeof(T);
			memcpy(m_pszShadow, (const void*)m_pszData, m_nCbString + sizeof(T));
			TRACE("Changed: %s\n", GetPath());
		}
		Unlock(nLocks);
		return bChanged;
	}

private:
	const size_t m_nCChBuffer;
	const size_t m_nCbBuffer;
	size_t m_nCbString;
    volatile T *m_pszData;
    T *m_pszShadow;
};

/////////////////////////////////////////////////////////////////////////////

#define GET_BOOL_VAL(p, m)				(!!(*p & m))
#define SET_BIT(p, m)					(*p |= m)
#define CLR_BIT(p, m)					(*p &= ~m)
#define STORE_BIT(p, m, b)				(b) ? SET_BIT(p, m) : CLR_BIT(p, m)

class CMqttBitVariable : public CMqttVar
{
public:
	CMqttBitVariable(CMqttBitVariable &&m) noexcept :
					CMqttVar(std::move(m)),
					m_mask(std::move(m.m_mask)),
					m_pDataByte(std::move(m.m_pDataByte)),
					m_pShadowByte(std::move(m.m_pShadowByte))
	{
	}

	CMqttBitVariable(void *pData, void *pShadow, HSHM hShm, const char *pszName, size_t nOffset, int nBitNr, uint32_t nPubMask, int nQos, bool bRetain, CMqttVar *pParent) :
					CMqttVar(hShm, pszName, -1, nPubMask, nQos, bRetain, pParent),
					m_mask(1 << nBitNr),
					m_pDataByte((uint8_t*)pData + nOffset),
					m_pShadowByte((uint8_t*)pShadow + nOffset)
	{
		ASSERT(m_pDataByte);
		ASSERT(m_pShadowByte);
		int nLocks = 0;
		Lock(nLocks);
		STORE_BIT(m_pShadowByte, m_mask, GET_BOOL_VAL(m_pDataByte, m_mask));
		Unlock(nLocks);
	}

public:
	virtual void CheckShmAndPublish(const char *pszTopicDevID, const char *pszTopicShmID, CMqttMessageQueue &rmq, int &nLocks)
	{
		uint32_t nPubMaskForcedOnce = GetForcedPublishMask();
		ClearForcedPublishMask();

		if(!PublishEnabled())
			return;
		if(!UpdateShadowBuffer(nLocks))
		{
			if(nPubMaskForcedOnce & MQTT_VALUE_BINLE)
				PublishBinLE(pszTopicDevID, pszTopicShmID, rmq, nLocks);
			if(nPubMaskForcedOnce & MQTT_VALUE_BINBE)
				PublishBinBE(pszTopicDevID, pszTopicShmID, rmq, nLocks);
			if(nPubMaskForcedOnce & MQTT_VALUE_JSON)
				PublishJson(pszTopicDevID, pszTopicShmID, rmq, nLocks);
			if(nPubMaskForcedOnce & MQTT_VALUE_PBUF)
				PublishPBuf(pszTopicDevID, pszTopicShmID, rmq, nLocks);
		}
		else
		{
			if(PublishEnabled(MQTT_VALUE_BINLE))
				PublishBinLE(pszTopicDevID, pszTopicShmID, rmq, nLocks);
			if(PublishEnabled(MQTT_VALUE_BINBE))
				PublishBinBE(pszTopicDevID, pszTopicShmID, rmq, nLocks);
			if(PublishEnabled(MQTT_VALUE_JSON))
				PublishJson(pszTopicDevID, pszTopicShmID, rmq, nLocks);
			if(PublishEnabled(MQTT_VALUE_PBUF))
				PublishPBuf(pszTopicDevID, pszTopicShmID, rmq, nLocks);
		}
	}

	virtual bool SetShmValue(uint32_t nValFormat, CMqttMessage *pMsg, int &nLocks) {
		switch(nValFormat)
		{
		case MQTT_VALUE_BINLE:
		case MQTT_VALUE_BINBE:
			return SetShmValueBin(pMsg, nLocks);
		case MQTT_VALUE_JSON:
			return SetShmValueJson(pMsg, nLocks);
		case MQTT_VALUE_PBUF:
			return SetShmValuePBuf(pMsg, nLocks);
		default:
			break;
		}
		return false;
	}

private:
	bool SetShmValueBin(CMqttMessage *pMsg, int &nLocks)
	{
		if(pMsg->payload && ((size_t)pMsg->payloadlen == sizeof(bool)))
		{
			bool bVal = !!(*(bool*)pMsg->payload);
			Lock(nLocks);
			STORE_BIT(m_pDataByte, m_mask, bVal);
			Unlock(nLocks);
			return true;
		}
		return false;
	}

	bool SetShmValueJson(CMqttMessage *pMsg, int &nLocks)
	{
		bool bRet = false;

		if(pMsg)
		{
			bool bVal;
			CJson_t jtRoot, jtVal;
			std::string sErr;

			if(pMsg->GetPayloadAsJSON(jtRoot, sErr))
			{
				if(jtRoot.GetValue("value", jtVal))
				{
					const json_t *pjt = jtVal;

					if(json_is_boolean(pjt))
					{
						bVal = json_boolean_value(pjt);
						bRet = true;
					}
					else if(json_is_integer(pjt))
					{
						bVal = !!::json_integer_value(pjt);
						bRet = true;
					}
					
					if(bRet)
					{
						Lock(nLocks);
						STORE_BIT(m_pDataByte, m_mask, bVal);
						Unlock(nLocks);
					}
				}
			}
		}
		return bRet;
	}

	bool SetShmValuePBuf(CMqttMessage *pMsg, int &nLocks)
	{
		TRACE("%s:\n\tProtocol buffers not implemented!\n", GetPath());
		return false;
	}

	void PublishBinLE(const char *pszTopicDevID, const char *pszTopicShmID, CMqttMessageQueue &rmq, int &nLocks)
	{
		std::string s = CreateTopic(pszTopicDevID, pszTopicShmID, MQTT_TOPIC_VALUE_BINLE, MQTT_TOPIC_CMD_VALUE);
		bool  val = GET_BOOL_VAL(m_pShadowByte, m_mask);
#if _RETURN_BIN_AS_STRING
		std::string v = val ? "true" : "false";
		CMqttMessage *pMsg = CMqttMessage::CreateMessage(s.c_str(), v.c_str(), v.length(), GetQoS(), GetRetained());
#else	//	_RETURN_BIN_AS_STRING
		CMqttMessage *pMsg = CMqttMessage::CreateMessage(s.c_str(), &val, sizeof(val), GetQoS(), GetRetained());
#endif	//	_RETURN_BIN_AS_STRING
		rmq.Push(pMsg);
	}

	void PublishBinBE(const char *pszTopicDevID, const char *pszTopicShmID, CMqttMessageQueue &rmq, int &nLocks)
	{
		std::string s = CreateTopic(pszTopicDevID, pszTopicShmID, MQTT_TOPIC_VALUE_BINBE, MQTT_TOPIC_CMD_VALUE);
		bool  val = GET_BOOL_VAL(m_pShadowByte, m_mask);
#if _RETURN_BIN_AS_STRING
		std::string v = val ? "true" : "false";
		CMqttMessage *pMsg = CMqttMessage::CreateMessage(s.c_str(), v.c_str(), v.length(), GetQoS(), GetRetained());
#else	//	_RETURN_BIN_AS_STRING
		CMqttMessage *pMsg = CMqttMessage::CreateMessage(s.c_str(), &val, sizeof(val), GetQoS(), GetRetained());
#endif	//	_RETURN_BIN_AS_STRING
		rmq.Push(pMsg);
	}

	void PublishJson(const char *pszTopicDevID, const char *pszTopicShmID, CMqttMessageQueue &rmq, int &nLocks)
	{
		std::string s = CreateTopic(pszTopicDevID, pszTopicShmID, MQTT_TOPIC_VALUE_JSON, MQTT_TOPIC_CMD_VALUE);
		CJson_t jtValue(json_object());
		CJson_t jtPath(json_string(GetPath()));
		CJson_t jtIndex(json_integer(GetIndex()));
		CJson_t jtName(json_string(GetName()));
		CJson_t jtVal(GetJsonValue());
		json_object_set(jtValue, "path", jtPath);
		json_object_set(jtValue, "index", jtIndex);
		json_object_set(jtValue, "name", jtName);
		json_object_set(jtValue, "value", jtVal);
		char *pszJson = json_dumps(jtValue, MQTT_JSON_OUTPUT_FLAGS);
		std::string v = pszJson;
		free(pszJson);
		CMqttMessage *pMsg = CMqttMessage::CreateMessage(s.c_str(), v.c_str(), v.length(), GetQoS(), GetRetained());
		rmq.Push(pMsg);
	}

	void PublishPBuf(const char *pszTopicDevID, const char *pszTopicShmID, CMqttMessageQueue &rmq, int &nLocks)
	{
		std::string s = CreateTopic(pszTopicDevID, pszTopicShmID, MQTT_TOPIC_VALUE_PBUF, MQTT_TOPIC_CMD_VALUE);
		TRACE("%s:\n\tProtocol buffers not implemented!\n", s.c_str());
	}

	json_t* GetJsonValue(void) const
	{
		return json_boolean(GET_BOOL_VAL(m_pShadowByte, m_mask));
	}

	bool UpdateShadowBuffer(int &nLocks)
	{
		bool bVal;
		Lock(nLocks);
		bool bChanged = GET_BOOL_VAL(m_pShadowByte, m_mask) != (bVal = GET_BOOL_VAL(m_pDataByte, m_mask));
		if(bChanged)
		{
			STORE_BIT(m_pShadowByte, m_mask, bVal);
			TRACE("Changed: %s\n", GetPath());
		}
		Unlock(nLocks);
		return bChanged;
	}

private:
	uint8_t m_mask;
	volatile uint8_t *m_pDataByte;
	uint8_t *m_pShadowByte;
};

/////////////////////////////////////////////////////////////////////////////

template <typename T, typename V>
class CMqttVarArray :	public CMqttVar,
						public std::vector<T>
{
public:
	CMqttVarArray(void *pData, void *pShadow, HSHM hShm, const char *pszName, size_t nElemCount, uint32_t nPubMask, int nQos, bool bRetain, CMqttVar *pParent)
				: CMqttVar(hShm, pszName, -1, 0, nQos, bRetain, pParent)
	{
		for(size_t i = 0; i < nElemCount; i++)
		{
			this->emplace_back(&((V*)pData)[i], &((V*)pShadow)[i], hShm, pszName, i, nPubMask, nQos, bRetain, static_cast<CMqttVar*>(this));
		}
	}

	CMqttVarArray(void *pData, void *pShadow, HSHM hShm, const char *pszName, size_t nElemCount, size_t nCChData, uint32_t nPubMask, int nQos, bool bRetain, CMqttVar *pParent)
				: CMqttVar(hShm, pszName, -1, 0, nQos, bRetain, pParent)
	{
		for(size_t i = 0; i < nElemCount; i++)
		{
			this->emplace_back(&((V*)pData)[i * nCChData], &((V*)pShadow)[i * nCChData], hShm, pszName, nCChData, i, nPubMask, nQos, bRetain, static_cast<CMqttVar*>(this));
		}
	}

public:
	virtual void CreateMembersTable(CMqttVarTable &vt)
	{
		CMqttVar::CreateMembersTable(vt);
		for(auto i = this->begin(); i != this->end(); ++i)
		{
			CMqttVar &rVar = static_cast<CMqttVar&>(*i);
	    	rVar.CreateMembersTable(vt);
		}
	}

	virtual void InitPath(CMqttVar *pParent, const char *pszMemberName, int nIndex = -1)
	{
		CMqttVar::InitPath(pParent, pszMemberName, nIndex);
		int j = 0;
		for(auto i = this->begin(); i != this->end(); ++i, ++j)
		{
			CMqttVar &rVar = static_cast<CMqttVar&>(*i);
			rVar.InitPath(pParent, pszMemberName, j);
		}
	}

	virtual void CheckShmAndPublish(const char *pszTopicDevID, const char *pszTopicShmID, CMqttMessageQueue &rmq, int &nLocks)
	{
		Lock(nLocks);
		for(auto i = this->begin(); i != this->end(); ++i)
		{
			CMqttVar &rVar = static_cast<CMqttVar&>(*i);
			rVar.CheckShmAndPublish(pszTopicDevID, pszTopicShmID, rmq, nLocks);
		}
		Unlock(nLocks);
	}

	virtual bool EnablePublish(uint32_t nMask, CMqttVarTable *pvt)
	{
		bool bRet = false;
		for(auto i = this->begin(); i != this->end(); ++i)
		{
			CMqttVar &rVar = static_cast<CMqttVar&>(*i);
			bRet = rVar.EnablePublish(nMask, pvt) || bRet;
		}
		return bRet;
	}

	virtual bool DisablePublish(uint32_t nMask, CMqttVarTable *pvt)
	{
		bool bRet = false;
		for(auto i = this->begin(); i != this->end(); ++i)
		{
			CMqttVar &rVar = static_cast<CMqttVar&>(*i);
			bRet = rVar.DisablePublish(nMask, pvt) || bRet;
		}
		return bRet;
	}

	virtual bool SetQoS(int nQos)
	{
		bool bRet = false;
		for(auto i = this->begin(); i != this->end(); ++i)
		{
			CMqttVar &rVar = static_cast<CMqttVar&>(*i);
			bRet = rVar.SetQoS(nQos) || bRet;
		}
		return bRet;
	}

	virtual bool SetRetained(bool bRetain)
	{
		bool bRet = false;
		for(auto i = this->begin(); i != this->end(); ++i)
		{
			CMqttVar &rVar = static_cast<CMqttVar&>(*i);
			bRet = rVar.SetRetained(bRetain) || bRet;
		}
		return bRet;
	}

	virtual void RemoveRetained(const char *pszTopicDevID, const char *pszTopicShmID, CMqttMessageQueue &rmq, bool bForce)
	{
		for(auto i = this->begin(); i != this->end(); ++i)
		{
			CMqttVar &rVar = static_cast<CMqttVar&>(*i);
			rVar.RemoveRetained(pszTopicDevID, pszTopicShmID, rmq, bForce);
		}
	}
};

/////////////////////////////////////////////////////////////////////////////
#endif	//	__cplusplus
#endif	//	!defined(AGD_MQTTVAR_H__CA5925ED_7757_407C_86F2_E7687DFFCCFA__INCLUDED_)