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Copy pathwebserver.cpp
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340 lines (314 loc) · 8.18 KB
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/*
* @Author : mark
* @Date : 2020-06-17
* @copyleft Apache 2.0
*/
#include "webserver.h"
using namespace std;
WebServer::WebServer(
int port, int trigMode, int timeoutMS, bool OptLinger,
int sqlPort, const char *sqlUser, const char *sqlPwd,
const char *dbName, int connPoolNum, int threadNum,
bool openLog, int logLevel, int logQueSize) : port_(port), openLinger_(OptLinger), timeoutMS_(timeoutMS), isClose_(false),
timer_(new HeapTimer()), threadpool_(new ThreadPool(threadNum)), epoller_(new Epoller())
{
srcDir_ = getcwd(nullptr, 256);
assert(srcDir_);
strncat(srcDir_, "/resources/", 16);
HttpConn::userCount = 0;
HttpConn::srcDir = srcDir_;
SqlConnPool::Instance()->Init("localhost", sqlPort, sqlUser, sqlPwd, dbName, connPoolNum);
InitEventMode_(trigMode);
if (!InitSocket_())
{
isClose_ = true;
}
if (openLog)
{
Log::Instance()->init(logLevel, "./log", ".log", logQueSize);
if (isClose_)
{
LOG_ERROR("========== Server init error!==========");
}
else
{
LOG_INFO("========== Server init ==========");
LOG_INFO("Port:%d, OpenLinger: %s", port_, OptLinger ? "true" : "false");
LOG_INFO("Listen Mode: %s, OpenConn Mode: %s",
(listenEvent_ & EPOLLET ? "ET" : "LT"),
(connEvent_ & EPOLLET ? "ET" : "LT"));
LOG_INFO("LogSys level: %d", logLevel);
LOG_INFO("srcDir: %s", HttpConn::srcDir);
LOG_INFO("SqlConnPool num: %d, ThreadPool num: %d", connPoolNum, threadNum);
}
}
}
WebServer::~WebServer()
{
close(listenFd_);
isClose_ = true;
free(srcDir_);
SqlConnPool::Instance()->ClosePool();
}
void WebServer::InitEventMode_(int trigMode)
{
listenEvent_ = EPOLLRDHUP;
connEvent_ = EPOLLONESHOT | EPOLLRDHUP;
switch (trigMode)
{
case 0:
break;
case 1:
connEvent_ |= EPOLLET;
break;
case 2:
listenEvent_ |= EPOLLET;
break;
case 3:
listenEvent_ |= EPOLLET;
connEvent_ |= EPOLLET;
break;
default:
listenEvent_ |= EPOLLET;
connEvent_ |= EPOLLET;
break;
}
HttpConn::isET = (connEvent_ & EPOLLET);
}
void WebServer::Start()
{
int timeMS = -1; /* epoll wait timeout == -1 无事件将阻塞 */
if (!isClose_)
{
LOG_INFO("========== Server start ==========");
}
while (!isClose_)
{
if (timeoutMS_ > 0)
{
timeMS = timer_->GetNextTick();
}
int eventCnt = epoller_->Wait(timeMS);
for (int i = 0; i < eventCnt; i++)
{
/* 处理事件 */
int fd = epoller_->GetEventFd(i);
uint32_t events = epoller_->GetEvents(i);
if (fd == listenFd_)
{
DealListen_();
}
else if (events & (EPOLLRDHUP | EPOLLHUP | EPOLLERR))
{
assert(users_.count(fd) > 0);
CloseConn_(&users_[fd]);
}
else if (events & EPOLLIN)
{
assert(users_.count(fd) > 0);
DealRead_(&users_[fd]);
}
else if (events & EPOLLOUT)
{
assert(users_.count(fd) > 0);
DealWrite_(&users_[fd]);
}
else
{
LOG_ERROR("Unexpected event");
}
}
}
}
void WebServer::SendError_(int fd, const char *info)
{
assert(fd > 0);
int ret = send(fd, info, strlen(info), 0);
if (ret < 0)
{
LOG_WARN("send error to client[%d] error!", fd);
}
close(fd);
}
void WebServer::CloseConn_(HttpConn *client)
{
assert(client);
LOG_INFO("Client[%d] quit!", client->GetFd());
epoller_->DelFd(client->GetFd());
client->Close();
}
void WebServer::AddClient_(int fd, sockaddr_in addr)
{
assert(fd > 0);
users_[fd].init(fd, addr);
if (timeoutMS_ > 0)
{
timer_->add(fd, timeoutMS_, std::bind(&WebServer::CloseConn_, this, &users_[fd]));
}
epoller_->AddFd(fd, EPOLLIN | connEvent_);
SetFdNonblock(fd);
LOG_INFO("Client[%d] in!", users_[fd].GetFd());
}
void WebServer::DealListen_()
{
struct sockaddr_in addr;
socklen_t len = sizeof(addr);
do
{
int fd = accept(listenFd_, (struct sockaddr *)&addr, &len);
if (fd <= 0)
{
return;
}
else if (HttpConn::userCount >= MAX_FD)
{
SendError_(fd, "Server busy!");
LOG_WARN("Clients is full!");
return;
}
AddClient_(fd, addr);
} while (listenEvent_ & EPOLLET);
}
void WebServer::DealRead_(HttpConn *client)
{
assert(client);
ExtentTime_(client);
threadpool_->AddTask(std::bind(&WebServer::OnRead_, this, client));
}
void WebServer::DealWrite_(HttpConn *client)
{
assert(client);
ExtentTime_(client);
threadpool_->AddTask(std::bind(&WebServer::OnWrite_, this, client));
}
void WebServer::ExtentTime_(HttpConn *client)
{
assert(client);
if (timeoutMS_ > 0)
{
timer_->adjust(client->GetFd(), timeoutMS_);
}
}
void WebServer::OnRead_(HttpConn *client)
{
assert(client);
int ret = -1;
int readErrno = 0;
ret = client->read(&readErrno);
if (ret <= 0 && readErrno != EAGAIN)
{
CloseConn_(client);
return;
}
OnProcess(client);
}
void WebServer::OnProcess(HttpConn *client)
{
if (client->process())
{
epoller_->ModFd(client->GetFd(), connEvent_ | EPOLLOUT);
}
else
{
epoller_->ModFd(client->GetFd(), connEvent_ | EPOLLIN);
}
}
void WebServer::OnWrite_(HttpConn *client)
{
assert(client);
int ret = -1;
int writeErrno = 0;
ret = client->write(&writeErrno);
if (client->ToWriteBytes() == 0)
{
/* 传输完成 */
if (client->IsKeepAlive())
{
OnProcess(client);
return;
}
}
else if (ret < 0)
{
if (writeErrno == EAGAIN)
{
/* 继续传输 */
epoller_->ModFd(client->GetFd(), connEvent_ | EPOLLOUT);
return;
}
}
CloseConn_(client);
}
/* Create listenFd */
bool WebServer::InitSocket_()
{
int ret;
struct sockaddr_in addr;
if (port_ > 65535 || port_ < 1024)
{
LOG_ERROR("Port:%d error!", port_);
return false;
}
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = htonl(INADDR_ANY);
addr.sin_port = htons(port_);
struct linger optLinger = {0};
if (openLinger_)
{
/* 优雅关闭: 直到所剩数据发送完毕或超时 */
optLinger.l_onoff = 1;
optLinger.l_linger = 1;
}
listenFd_ = socket(AF_INET, SOCK_STREAM, 0);
if (listenFd_ < 0)
{
LOG_ERROR("Create socket error!", port_);
return false;
}
ret = setsockopt(listenFd_, SOL_SOCKET, SO_LINGER, &optLinger, sizeof(optLinger));
if (ret < 0)
{
close(listenFd_);
LOG_ERROR("Init linger error!", port_);
return false;
}
int optval = 1;
/* 端口复用 */
/* 只有最后一个套接字会正常接收数据。 */
ret = setsockopt(listenFd_, SOL_SOCKET, SO_REUSEADDR, (const void *)&optval, sizeof(int));
if (ret == -1)
{
LOG_ERROR("set socket setsockopt error !");
close(listenFd_);
return false;
}
ret = bind(listenFd_, (struct sockaddr *)&addr, sizeof(addr));
if (ret < 0)
{
LOG_ERROR("Bind Port:%d error!", port_);
close(listenFd_);
return false;
}
ret = listen(listenFd_, 6);
if (ret < 0)
{
LOG_ERROR("Listen port:%d error!", port_);
close(listenFd_);
return false;
}
ret = epoller_->AddFd(listenFd_, listenEvent_ | EPOLLIN);
if (ret == 0)
{
LOG_ERROR("Add listen error!");
close(listenFd_);
return false;
}
SetFdNonblock(listenFd_);
LOG_INFO("Server port:%d", port_);
return true;
}
int WebServer::SetFdNonblock(int fd)
{
assert(fd > 0);
return fcntl(fd, F_SETFL, fcntl(fd, F_GETFD, 0) | O_NONBLOCK);
}
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