proxysql/lib/mysql_connection.cpp

#include "proxysql.h"
#include "cpp.h"

/*
void * MySQL_Connection::operator new(size_t size) {
	return l_alloc(size);
}

void MySQL_Connection::operator delete(void *ptr) {
	l_free(sizeof(MySQL_Connection),ptr);
}
*/
MySQL_Connection::MySQL_Connection() {
	memset(&myconn,0,sizeof(MYSQL));
	MCA=NULL;
	mshge=NULL;
	myds=NULL;
	inserted_into_pool=0;
	reusable=false;
	proxy_debug(PROXY_DEBUG_MYSQL_CONNPOOL, 4, "Creating new MySQL_Connection %p\n", this);
};

MySQL_Connection::~MySQL_Connection() {
	proxy_debug(PROXY_DEBUG_MYSQL_CONNPOOL, 4, "Destroying MySQL_Connection %p\n", this);
	if (myconn.host) free(myconn.host);
	if (myconn.user) free(myconn.user);
	if (myconn.passwd) free(myconn.passwd);
	if (myconn.db) free(myconn.db);
/*
	if (myconn.user) l_free_string(myconn.user);
	if (myconn.passwd) l_free_string(myconn.passwd);
	if (myconn.db) l_free_string(myconn.db);
*/
	if (myconn.unix_socket) free(myconn.unix_socket);
	if (myconn.server_version) free(myconn.server_version);
	if (myconn.host_info) free(myconn.host_info);
	if (myconn.info) free(myconn.info);
//	if (myconn.server_version) l_free_string(myconn.server_version);
	if (myconn.charset) free(const_cast<charset_info_st *>(myconn.charset));
//	if (myconn.charset) l_free(sizeof(charset_info_st), const_cast<charset_info_st *>(myconn.charset));
//	if (myconn.charset) free(myconn.charset);
	if (mshge) {
	__sync_add_and_fetch(&mshge->references,-1);
	};
};


MyConnArray * MySQL_Connection::set_MCA(MySQL_Connection_Pool *_MyConnPool, const char *hostname, const char *username, const char *password, const char *db, unsigned int port) {
	proxy_debug(PROXY_DEBUG_MYSQL_CONNPOOL, 4, "MySQL_Connection_Pool=%p, Host=%s, user=%s, pass=%s, db=%s, port=%d\n", _MyConnPool, hostname, username, password, db, port);
	MCA=_MyConnPool->MyConnArray_lookup(hostname, username, password, db, port);
	assert(MCA);
	return MCA;
}

bool MySQL_Connection::return_to_connection_pool() {
	assert(MCA);
	proxy_debug(PROXY_DEBUG_MYSQL_CONNPOOL, 4, "Returning MySQL_Connection %p at MCA=%p\n", this, MCA);
	MCA->add(this);
	return true;
}

void MySQL_Connection::set_mshge(MySQL_Hostgroup_Entry *_mshge) {
	mshge=_mshge;
	__sync_add_and_fetch(&mshge->references,1);
};

void MySQL_Connection::free_mshge() {
	__sync_add_and_fetch(&mshge->references,-1);
	mshge=NULL;
};

int MySQL_Connection::assign_mshge(unsigned int hid) { // FIXME
/*	FIXME
		a) shouldn't always return 0
		b) MSHGE_find should get a random server
*/
	MyHGH->rdlock();
	if (mshge) { free_mshge(); }
	//MySQL_Hostgroup_Entry *_mshge=MyHGH->MSHGE_find(hid,(char *)"127.0.0.1", 3306);
	MySQL_Hostgroup_Entry *_mshge=MyHGH->get_random_hostgroup_entry(hid);
	assert(_mshge);
	if (_mshge) {
		set_mshge(_mshge);
	}
	MyHGH->rdunlock();
	return 0;
};

bool MySQL_Connection::is_expired(unsigned long long timeout) {
// FIXME: here the check should be a sanity check
// FIXME: for now this is just a temporary (and stupid) check
	return false;
}