/******************************************************************************
* *
* Function: process_nodes *
* *
* Purpose: calculates checksums of config data *
* *
* Parameters: *
* *
* Return value: *
* *
* Author: Alexander Vladishev *
* *
* Comments: *
* *
******************************************************************************/
void process_nodes()
{
DB_RESULT result;
DB_ROW row;
int nodeid;
int master_nodeid;
char *data, *answer;
zbx_sock_t sock;
int res;
int sender_nodeid;
master_nodeid = CONFIG_MASTER_NODEID;
if (0 == master_nodeid)
return;
result = DBselect("select nodeid from nodes");
while (NULL != (row=DBfetch(result))) {
nodeid = atoi(row[0]);
if (SUCCEED == is_master_node(CONFIG_NODEID, nodeid))
continue;
node_sync_lock(nodeid);
/* DBbegin();*/
res = calculate_checksums(nodeid, NULL, 0);
if (SUCCEED == res && NULL != (data = get_config_data(nodeid, ZBX_NODE_MASTER))) {
zabbix_log( LOG_LEVEL_WARNING, "NODE %d: Sending configuration changes to master node %d for node %d datalen %d",
CONFIG_NODEID,
master_nodeid,
nodeid,
strlen(data));
if (SUCCEED == (res = connect_to_node(master_nodeid, &sock))) {
if (SUCCEED == res)
res = send_data_to_node(master_nodeid, &sock, data);
if (SUCCEED == res)
res = recv_data_from_node(master_nodeid, &sock, &answer);
if (SUCCEED == res && 0 == strncmp(answer, "Data", 4)) {
res = update_checksums(nodeid, ZBX_NODE_MASTER, SUCCEED, NULL, 0, NULL);
if (SUCCEED == res)
res = node_sync(answer, &sender_nodeid, &nodeid);
send_data_to_node(master_nodeid, &sock, SUCCEED == res ? "OK" : "FAIL");
}
disconnect_node(&sock);
}
zbx_free(data);
}
/* DBcommit();*/
node_sync_unlock(nodeid);
}
DBfree_result(result);
}
/******************************************************************************
* *
* Function: is_master_node *
* *
* Purpose: *
* *
* Parameters: *
* *
* Return value: SUCCEED - master_nodeid is a master node of current_nodeid *
* FAIL - otherwise *
* *
* Author: Alexander Vladishev *
* *
* Comments: *
* *
******************************************************************************/
int is_master_node(int current_nodeid, int master_nodeid)
{
DB_RESULT result;
DB_ROW row;
int res = FAIL;
result = DBselect("select masterid from nodes where nodeid=%d",
current_nodeid);
if (NULL != (row = DBfetch(result)))
{
current_nodeid = atoi(row[0]);
if (current_nodeid == master_nodeid)
res = SUCCEED;
else if (0 != current_nodeid)
res = is_master_node(current_nodeid, master_nodeid);
}
DBfree_result(result);
return res;
}
/******************************************************************************
* *
* Function: main_historysender *
* *
* Purpose: periodically sends historical data to master node *
* *
* Parameters: *
* *
* Return value: *
* *
* Author: Alexei Vladishev *
* *
* Comments: *
* *
******************************************************************************/
void main_historysender()
{
DB_RESULT result;
DB_ROW row;
int master_nodeid, nodeid;
zabbix_log(LOG_LEVEL_DEBUG, "In main_historysender()");
master_nodeid = CONFIG_MASTER_NODEID;
if (0 == master_nodeid)
return;
result = DBselect("select nodeid from nodes");
while ((row = DBfetch(result))) {
nodeid = atoi(row[0]);
if (SUCCEED == is_master_node(CONFIG_NODEID, nodeid))
continue;
process_history_tables(master_nodeid, nodeid);
}
DBfree_result(result);
}
