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/* Copyright (C) 2003 MySQL AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#include "SocketRegistry.hpp"
#include <Parser.hpp>
template<class T>
SocketRegistry<T>::SocketRegistry(Uint32 maxSocketClients) {
}
template<class T>
SocketRegistry<T>::~SocketRegistry() {
delete [] m_socketClients;
}
template<class T>
bool
SocketRegistry<T>::createSocketClient(const char * host, Uint16 port) {
if(port == 0)
return false;
if(host==NULL)
return false;
SocketClient * socketClient = new SocketClient(host, port);
if(socketClient->openSocket() < 0 || socketClient == NULL) {
ndbout << "could not connect" << endl;
delete socketClient;
return false;
}
else {
m_socketClients[m_nSocketClients] = socketClient;
m_nSocketClients++;
}
return true;
}
template<class T>
int
SocketRegistry<T>::pollSocketClients(Uint32 timeOutMillis) {
// Return directly if there are no TCP transporters configured
if (m_nSocketClients == 0){
tcpReadSelectReply = 0;
return 0;
}
struct timeval timeout;
timeout.tv_sec = timeOutMillis / 1000;
timeout.tv_usec = (timeOutMillis % 1000) * 1000;
NDB_SOCKET_TYPE maxSocketValue = 0;
// Needed for TCP/IP connections
// The read- and writeset are used by select
FD_ZERO(&tcpReadset);
// Prepare for sending and receiving
for (Uint32 i = 0; i < m_nSocketClients; i++) {
SocketClient * t = m_socketClients[i];
// If the socketclient is connected
if (t->isConnected()) {
const NDB_SOCKET_TYPE socket = t->getSocket();
// Find the highest socket value. It will be used by select
if (socket > maxSocketValue)
maxSocketValue = socket;
// Put the connected transporters in the socket read-set
FD_SET(socket, &tcpReadset);
}
}
// The highest socket value plus one
maxSocketValue++;
tcpReadSelectReply = select(maxSocketValue, &tcpReadset, 0, 0, &timeout);
#ifdef NDB_WIN32
if(tcpReadSelectReply == SOCKET_ERROR)
{
NdbSleep_MilliSleep(timeOutMillis);
}
#endif
return tcpReadSelectReply;
}
template<class T>
bool
SocketRegistry<T>::performSend(const char * buf,
Uint32 len,
const char * remotehost)
{
SocketClient * socketClient;
for(Uint32 i=0; i < m_nSocketClients; i++) {
socketClient = m_socketClients[i];
if(strcmp(socketClient->gethostname(), remotehost)==0) {
if(socketClient->isConnected()) {
if(socketClient->writeSocket(buf, len)>0)
return true;
else
return false;
}
}
}
return false;
}
template<class T>
int
SocketRegistry<T>::performReceive(T & t) {
char buf[255] ; //temp. just for testing. must fix better
if(tcpReadSelectReply > 0){
for (Uint32 i=0; i<m_nSocketClients; i++) {
SocketClient *sc = m_socketClients[i];
const NDB_SOCKET_TYPE socket = sc->getSocket();
if(sc->isConnected() && FD_ISSET(socket, &tcpReadset)) {
t->runSession(socket,t);
}
}
return 1;
}
return 0;
}
template<class T>
inline
int
SocketRegistry<T>::syncPerformReceive(char * host,
T & t,
Uint32 timeOutMillis) {
char buf[255] ; //temp. just for testing. must fix better
struct timeval timeout;
timeout.tv_sec = timeOutMillis / 1000;
timeout.tv_usec = (timeOutMillis % 1000) * 1000;
int reply;
SocketClient * sc;
for(Uint32 i=0; i < m_nSocketClients; i++) {
sc = m_socketClients[i];
if(strcmp(sc->gethostname(), remotehost)==0) {
if(sc->isConnected()) {
FD_ZERO(&tcpReadset);
reply = select(sc->getSocket(), &tcpReadset, 0, 0, &timeout);
if(reply > 0) {
return t->runSession(sc->getSocket(), t);
}
}
}
}
return 0;
}
template<class T>
bool
SocketRegistry<T>::reconnect(const char * host){
for(Uint32 i=0; i < m_nSocketClients; i++) {
SocketClient * socketClient = m_socketClients[i];
if(strcmp(socketClient->gethostname(), host)==0) {
if(!socketClient->isConnected()) {
if(socketClient->openSocket() > 0)
return true;
else return false;
}
}
}
return false;
}
template<class T>
bool
SocketRegistry<T>::removeSocketClient(const char * host){
for(Uint32 i=0; i < m_nSocketClients; i++) {
SocketClient * socketClient = m_socketClients[i];
if(strcmp(socketClient->gethostname(), host)==0) {
if(!socketClient->isConnected()) {
if(socketClient->closeSocket() > 0) {
delete socketClient;
return true;
}
else return false;
}
}
}
return false;
}
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