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framework.cpp
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framework.cpp
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#include <event2/listener.h>
#include <event2/bufferevent.h>
#include <event2/buffer.h>
#include <arpa/inet.h>
#include <string.h>
#include <errno.h>
#include <iostream>
#include <stdlib.h>
#include "boost/thread/thread.hpp"
#include "boost/thread/condition.hpp"
#include "boost/thread/mutex.hpp"
#include "boost/function.hpp"
#include "comm_tool.h"
//g++ framework.cpp -levent -lboost_thread /data/own_comm/lib/libcomm_tool.a
using namespace std;
typedef void (*TimerFunc)();
typedef void (*SignalFunc)();
class cPackageByHead
{
enum
{
PKG_HEAD_MARK=0x02,
PKG_TAIL_MARK=0x03,
};
enum
{
MAX_PKG_SIZE=(unsigned short)0xffff,
};
public:
cPackageByHead(){}
~cPackageByHead(){}
static inline int HasWholePkg(const char* pszData, const int iDataSize, int& iRealPkgLen, int& iPkgLen)
{
int iRe = -2;
if (iDataSize <= 0)
{
return -1;
}
if (iDataSize <= 3)
{
iRe = -1;
if ( *pszData != PKG_HEAD_MARK )
{
iRe = -2;
}
}
else
{
iPkgLen = ntohs(*((unsigned short*)(pszData+1)));
{
if ( iDataSize >= iPkgLen && iPkgLen >= 4 )
{
if ( *(pszData+iPkgLen-1) == PKG_TAIL_MARK )
{
iRealPkgLen = iPkgLen - 4;
iRe = 0;
}
else
{
iRe = -2;
}
}
else
{
iRe = -1;
if ( *pszData != PKG_HEAD_MARK || iPkgLen < 4 )
{
iRe = -2;
}
}
}
}
return iRe;
}
static inline const char* MakeSendPkg(std::string& sSendBuf, const char* pszData, const int iDataSize, int& iSendDataSize)
{
if ( iDataSize > MAX_PKG_SIZE-4 || iDataSize <= 0 )
{
return NULL;
}
sSendBuf.resize(iDataSize+4);
sSendBuf[0] = PKG_HEAD_MARK;
sSendBuf[iDataSize+3] = PKG_TAIL_MARK;
*((unsigned short*)(sSendBuf.data()+1)) = htons(iDataSize+4);
memcpy((char*)sSendBuf.data()+3, pszData, iDataSize);
iSendDataSize = (int)sSendBuf.size();
return sSendBuf.data();
}
inline static const char* GetRealPkgData(const char* pszData, const size_t nDataSize)
{
return pszData+3;
}
};
typedef boost::shared_mutex rwMutex;
typedef boost::shared_lock<rwMutex> rMutex;
typedef boost::unique_lock<rwMutex> wMutex;
class cTcpConn
{
public:
cTcpConn()
{
memset(&m_sin, 0, sizeof(m_sin));
m_ptrBase = NULL;
m_ptrListener = NULL;
m_ptrInFifo = NULL;
m_ptrOutFifo = NULL;
}
~cTcpConn()
{
if (m_ptrListener != NULL)
{
evconnlistener_free(m_ptrListener);
m_ptrListener = NULL;
}
if (m_ptrBase != NULL)
{
event_base_free(m_ptrBase);
m_ptrBase = NULL;
}
if (m_ptrInFifo != NULL)
{
delete m_ptrInFifo;
m_ptrInFifo = NULL;
}
if (m_ptrOutFifo != NULL)
{
delete m_ptrOutFifo;
m_ptrOutFifo = NULL;
}
}
bool Init(std::string& sIp, uint16_t iPort, struct event_base* ptr, int iInSize, int iOutSize)
{
m_sIp = sIp;
m_iPort = iPort;
m_sin.sin_family = AF_INET;
m_sin.sin_addr.s_addr = inet_addr(sIp.c_str());
m_sin.sin_port = htons(iPort);
m_ptrBase = ptr;
if (m_ptrBase == NULL)
{
return false;
}
m_ptrListener = evconnlistener_new_bind(m_ptrBase, (void(*)(struct evconnlistener* listener, evutil_socket_t fd, struct sockaddr *address, int socklen, void* ctx))&cTcpConn::AcceptCB, this, LEV_OPT_CLOSE_ON_FREE|LEV_OPT_REUSEABLE, -1, (struct sockaddr*)&m_sin, sizeof(m_sin));
if (!m_ptrListener)
{
cout <<"evconnlistener_new_bind failed.\n";
return 0;
}
m_ptrInFifo = new CFIFOBuffer;
if (m_ptrInFifo == NULL)
{
cout <<"new CFIFOBuffer failed.\n";
return false;
}
m_ptrInFifo->Init(iInSize);
m_ptrOutFifo = new CFIFOBuffer;
if (m_ptrOutFifo == NULL)
{
cout <<"new CFIFOBuffer failed.\n";
return false;
}
m_ptrOutFifo->Init(iOutSize);
boost::function<void()> CallBackFunc;
CallBackFunc = boost::bind(&cTcpConn::ConsumeInFifo, this);
boost::thread thread_one(CallBackFunc);
evconnlistener_set_error_cb(m_ptrListener, AcceptErrCB);
}
private:
void ConsumeInFifo(void)
{
boost::mutex::scoped_lock lock(m_InFifoMutex);
if (m_ptrInFifo->GetSize() == 0)
{
std::cout <<"waiting in ConsumeInFifo\n";
m_InFifoCond.wait(lock);
}
std::string s;
m_ptrInFifo->Read(s);
std::cout <<"ConsumeInFifo read : " << s << std::endl;
}
static void echo_read_cb(struct bufferevent *bev, void *ctx)
{
cTcpConn* ptr = (cTcpConn*)ctx;
std::cout <<"echo_read_cb\n";
char buf[1024];
char sbuf[1024*1024];
memset(sbuf, 0, sizeof(sbuf));
int count = 0;
int pos = 0;
while(1)
{
struct evbuffer *input = bufferevent_get_input(bev);
int n = bufferevent_read(bev, buf, sizeof(buf));
if (n <= 0)
{
std::cout <<"bufferevent_read error :" << n << std::endl;
return;
}
else
{
int32_t iWholeFlag = 0;
int32_t nPkgLen = 0;
int32_t nRealPkgLen = 0;
memcpy(sbuf+pos, buf, n);
pos += n;
std::cout <<"count is " <<count << std::endl;
count++;
if (iWholeFlag=cPackageByHead::HasWholePkg(sbuf, pos, nRealPkgLen, nPkgLen) == 0)
{
const char* pstRealPkgData = cPackageByHead::GetRealPkgData(sbuf, sizeof(sbuf));
std::string s(pstRealPkgData, nRealPkgLen);
boost::mutex::scoped_lock lock(ptr->m_InFifoMutex);
ptr->m_ptrInFifo->Write(s);
std::cout <<"in echo_read_cb real pkg:" << s << std::endl;
memset(sbuf, 0, sizeof(sbuf));
pos = 0;
}
ptr->m_InFifoCond.notify_one();
}
}
}
static void echo_event_cb(struct bufferevent *bev, short events, void *ctx)
{
cTcpConn* ptr = (cTcpConn*)ctx;
std::cout <<"echo_event_cb\n";
if (events & BEV_EVENT_ERROR)
{
cout <<"Error from bufferevent" << endl;
}
else if (events & (BEV_EVENT_EOF | BEV_EVENT_ERROR))
{
cout <<"event accept close event\n";
bufferevent_free(bev);
}
}
static void AcceptCB(struct evconnlistener* listener, evutil_socket_t fd, struct sockaddr *address, int socklen, void* ctx)
{
std::cout <<"AcceptCB\n";
cTcpConn* ptr = (cTcpConn*)ctx;
struct event_base *base = evconnlistener_get_base(listener);
struct bufferevent *bev = bufferevent_socket_new(base, fd, BEV_OPT_CLOSE_ON_FREE);
bufferevent_setcb(bev, echo_read_cb, NULL, echo_event_cb, ctx);
bufferevent_enable(bev, EV_READ|EV_WRITE);
}
static void AcceptErrCB(struct evconnlistener *listener, void* ctx)
{
std::cout <<"AcceptErrCB\n";
struct event_base *base = evconnlistener_get_base(listener);
int err = EVUTIL_SOCKET_ERROR();
cout <<"Got an error:" << err << "on the listener. errmsg:" << evutil_socket_error_to_string(err) << endl;
event_base_loopexit(base, NULL);
}
private:
struct sockaddr_in m_sin;
string m_sIp;
uint16_t m_iPort;
struct event_base* m_ptrBase;
struct evconnlistener* m_ptrListener;
boost::mutex m_InFifoMutex;
boost::condition m_InFifoCond;
boost::mutex m_OutFifoMutex;
boost::condition m_OutFifoCond;
CFIFOBuffer* m_ptrInFifo;
CFIFOBuffer* m_ptrOutFifo;
};
class cTimer
{
public:
cTimer()
{
m_ptrBase = NULL;
m_mapTimers.clear();
m_mapEvents.clear();
}
~cTimer()
{
std::map<std::string, struct event*>::iterator iter;
for (iter=m_mapEvents.begin(); iter!=m_mapEvents.end(); iter++)
{
if (iter->second != NULL)
{
event_free(iter->second);
iter->second = NULL;
}
}
std::map<std::string, st_Timer*>::iterator iterTimer;
for (iterTimer=m_mapTimers.begin(); iterTimer!=m_mapTimers.end(); iterTimer++)
{
if (iterTimer->second != NULL)
{
delete iterTimer->second;
iterTimer->second = NULL;
}
}
}
bool Init(struct event_base* ptr)
{
m_ptrBase = ptr;
if (m_ptrBase == NULL)
{
cout << "event_base_new failed\n";
return false;
}
return true;
}
bool SetTimer(std::string sName, struct timeval tv, TimerFunc func)
{
st_Timer* t = new st_Timer ;
t->name = sName;
t->tv = tv;
t->func = func;
if (m_ptrBase == NULL)
{
std::cout <<"m_ptrBase NULL\n";
return false;
}
struct event* ev = NULL;
ev = event_new(m_ptrBase, -1, EV_PERSIST, TimeCallBack, t);
if (ev == NULL)
{
return false;
}
m_mapTimers[sName] = t;
m_mapEvents[sName] = ev;
event_add(ev, &t->tv);
}
typedef struct stTimer
{
std::string name;
struct timeval tv;
TimerFunc func;
}st_Timer;
private:
static void TimeCallBack(evutil_socket_t fd, short event, void* opt)
{
st_Timer* ptr = (st_Timer*)opt;
std::cout<<"time name:" << ptr->name << "\tin TimeCallBack func\n";
ptr->func();
}
private:
struct event_base* m_ptrBase;
std::map<std::string, st_Timer*> m_mapTimers;
std::map<std::string, struct event*> m_mapEvents;
};
class cSignal
{
public:
cSignal()
{
m_ptrBase = NULL;
m_mapSignal.clear();
m_mapEvents.clear();
}
~cSignal()
{
std::map<int, STSignal*>::iterator iter;
for (iter=m_mapSignal.begin(); iter!=m_mapSignal.end(); iter++)
{
if (iter->second != NULL)
{
delete iter->second;
iter->second = NULL;
}
}
std::map<int, struct event*>::iterator iterevent;
for (iterevent=m_mapEvents.begin(); iterevent!=m_mapEvents.end(); iterevent++)
{
if (iterevent->second != NULL)
{
event_free(iterevent->second);
iterevent->second = NULL;
}
}
}
bool Init(struct event_base* ptr)
{
m_ptrBase = ptr;
if (ptr == NULL)
{
std::cout <<"Init failed. ptr is NULL\n";
return false;
}
return true;
}
bool SetSignal(int signo, SignalFunc func)
{
STSignal* ptr = new STSignal;
ptr->signal = signo;
ptr->func = func;
struct event* signal_int;
signal_int = evsignal_new(m_ptrBase, signo, SignalCB, ptr);
if (signal_int == NULL)
{
std::cout <<"SetSignal failed, evsignal_new return null\n";
return false;
}
m_mapSignal[signo] = ptr;
m_mapEvents[signo] = signal_int;
event_add(signal_int, NULL);
return true;
}
typedef struct stSignal
{
int signal;
SignalFunc func;
}STSignal;
private:
static void SignalCB(evutil_socket_t fd, short event, void *arg)
{
STSignal* ptr = (STSignal* )arg;
std::cout <<"in SignalCB func. signalno:" << ptr->signal;
ptr->func();
}
private:
event_base* m_ptrBase;
std::map<int, STSignal*> m_mapSignal;
std::map<int, struct event*> m_mapEvents;
};
class cTask
{
public:
cTask()
{
m_ptrBase = NULL;
}
virtual ~cTask()
{
if (m_ptrBase != NULL)
{
event_base_free(m_ptrBase);
}
}
static void EventLog(int severity, const char *msg)
{
msglog.Write(msg);
}
bool Init(std::string sLogPath)
{
msglog.Init(sLogPath, 1024*1024*10, 5, false);
event_set_log_callback(EventLog);
m_ptrBase = event_base_new();
if (!m_ptrBase)
{
cout << "event_base_new failed\n";
return false;
}
const char* ptr = event_base_get_method(m_ptrBase);
msglog.Write("event_base_get_method get base use(%s)", ptr);
return true;
}
bool InitConn(std::string& sIp, uint16_t iPort, int iInSize, int iOutSize)
{
conn.Init(sIp, iPort, m_ptrBase, iInSize, iOutSize);
}
bool InitTimer()
{
timer.Init(m_ptrBase);
}
bool InitSignal()
{
signal.Init(m_ptrBase);
}
bool SetTimer(std::string& sName, struct timeval val, TimerFunc func)
{
timer.SetTimer(sName, val, func);
}
bool SetSignal(int sign, SignalFunc func)
{
signal.SetSignal(sign, func);
}
bool RunDispatch()
{
if (m_ptrBase == NULL)
{
std::cout << "RunDispatch failed. NULL\n";
return false;
}
while (event_base_dispatch(m_ptrBase) == 0)
{
event_base_dispatch(m_ptrBase);
}
return true;
}
private:
cTcpConn conn;
cTimer timer;
cSignal signal;
struct event_base* m_ptrBase;
static CFileLog msglog;
};
void Test()
{
std::cout <<"TimerFunc test\n";
}
void Test2()
{
std::cout <<"TimerFunc Test2\n";
}
void SignalTest()
{
std::cout <<"int SignalTest\n";
}
CFileLog cTask::msglog;
int main(int argc, char** argv)
{
if (argc != 2)
{
std::cout <<"need too argv\n";
return 0;
}
CFileLog msgLog;
CConfig oCfg;
if (!oCfg.LoadConfig(argv[1]))
{
std::cout <<"load config failed," << argv[1] << std::endl;
return 0;
}
CValue iport = oCfg.GetValue("tcp", "port", 20000);
CValue sLogPath = oCfg.GetValue("comm", "log", "./");
msgLog.Init((std::string)sLogPath+"/"+argv[0]+"_msg", 1024*1024*100, 5, false);
msgLog.Write("in server_ver2");
msgLog.Write("port: %d" ,(uint16_t)iport) ;
msgLog.Write("sLogPath :%s", ((std::string)sLogPath).c_str());
std::string sIp = "127.0.0.1";
cTask task;
std::string sTaskLogPath = sLogPath.data() ;
sTaskLogPath += "/";
sTaskLogPath += argv[0];
sTaskLogPath += "_taskmsg";
task.Init(sTaskLogPath);
task.InitConn(sIp, iport, 1024*1024*100, 1024*1024*100);
task.InitTimer();
task.InitSignal();
std::string name = "timer1";
struct timeval tval = {10,0};
task.SetTimer(name, tval, Test);
/*
name = "timer2";
tval.tv_sec = 5;
tval.tv_usec = 0;
task.SetTimer(name, tval, Test2);
*/
// task.SetSignal(SIGINT, SignalTest);
task.RunDispatch();
return 0;
}