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/*
** ZABBIX
** Copyright (C) 2000-2006 SIA Zabbix
**
** 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., 675 Mass Ave, Cambridge, MA 02139, USA.
**/
#include "common.h"
#include "cfg.h"
#include "db.h"
#include "log.h"
#include "zlog.h"
#include "comms.h"
#include "nodecomms.h"
int connect_to_node(int nodeid, zbx_sock_t *sock)
{
DB_RESULT result;
DB_ROW row;
unsigned short port;
int res = FAIL;
zabbix_log(LOG_LEVEL_DEBUG, "In connect_to_node(nodeid:%d)", nodeid);
result = DBselect("select ip,port from nodes where nodeid=%d",
nodeid);
if (NULL != (row = DBfetch(result))) {
port = (unsigned short)atoi(row[1]);
if (SUCCEED == zbx_tcp_connect(sock, CONFIG_SOURCE_IP, row[0], port, 0))
res = SUCCEED;
else
zabbix_log(LOG_LEVEL_ERR, "NODE %d: Unable to connect to Node [%d] error: %s",
CONFIG_NODEID,
nodeid,
zbx_tcp_strerror());
} else
zabbix_log(LOG_LEVEL_ERR, "NODE %d: Node [%d] is unknown",
CONFIG_NODEID,
nodeid);
DBfree_result(result);
return res;
}
int send_data_to_node(int nodeid, zbx_sock_t *sock, const char *data)
{
int res;
if (FAIL == (res = zbx_tcp_send_ext(sock, data, ZBX_TCP_NEW_PROTOCOL))) {
zabbix_log(LOG_LEVEL_ERR, "NODE %d: Error while sending data to Node [%d] error: %s",
CONFIG_NODEID,
nodeid,
zbx_tcp_strerror());
} else
zabbix_log(LOG_LEVEL_DEBUG, "NODE %d: Sending [%s] to Node [%d]",
CONFIG_NODEID,
data,
nodeid);
return res;
}
int recv_data_from_node(int nodeid, zbx_sock_t *sock, char **data)
{
int res;
if (FAIL == (res = zbx_tcp_recv_ext(sock, data, 0))) {
zabbix_log(LOG_LEVEL_ERR, "NODE %d: Error while receiving answer from Node [%d] error: %s",
CONFIG_NODEID,
nodeid,
zbx_tcp_strerror());
} else
zabbix_log(LOG_LEVEL_DEBUG, "NODE %d: Receiving [%s] from Node [%d]",
CONFIG_NODEID,
*data,
nodeid);
return res;
}
void disconnect_node(zbx_sock_t *sock)
{
zbx_tcp_close(sock);
}
/******************************************************************************
* *
* Function: send_to_node *
* *
* Purpose: send configuration changes to required node *
* *
* Parameters: *
* *
* Return value: SUCCESS - processed succesfully *
* FAIL - an error occured *
* *
* Author: Alexei Vladishev *
* *
* Comments: *
* *
******************************************************************************/
int send_to_node(const char *name, int dest_nodeid, int nodeid, char *data)
{
int ret = FAIL;
zbx_sock_t sock;
char *answer;
zabbix_log( LOG_LEVEL_WARNING, "NODE %d: Sending %s of node %d to node %d datalen %zd",
CONFIG_NODEID,
name,
nodeid,
dest_nodeid,
strlen(data));
if (FAIL == connect_to_node(dest_nodeid, &sock))
return FAIL;
if (FAIL == send_data_to_node(dest_nodeid, &sock, data))
goto disconnect;
if (FAIL == recv_data_from_node(dest_nodeid, &sock, &answer))
goto disconnect;
if (0 == strcmp(answer, "OK"))
{
zabbix_log( LOG_LEVEL_DEBUG, "OK");
ret = SUCCEED;
}
else
{
zabbix_log( LOG_LEVEL_WARNING, "NOT OK");
}
disconnect:
disconnect_node(&sock);
return ret;
}
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