dbi_conn dbi_conn_new_r(const char *name, dbi_inst Inst) {
dbi_driver driver;
dbi_conn conn;
driver = dbi_driver_open_r(name, Inst);
conn = dbi_conn_open(driver);
return conn;
}
static int _sql_setparam(struct sql_table_helper* th,char* key, char* value) {
char* dbi_errstr=NULL;
dbi_driver driver;
/* if not connected */
if (! th->conn) {
/* initialize some stuff */
th->table_next=th->table_start;
th->result=NULL;
th->connected=0;
/* initialize db */
if (getenv("RRDDEBUGSQL")) {
fprintf(stderr,"RRDDEBUGSQL: %li: initialize libDBI\n",time(NULL) );
}
dbi_initialize(NULL);
/* load the driver */
driver=dbi_driver_open(th->dbdriver);
if (! driver) {
rrd_set_error( "libdbi - no such driver: %s (possibly a dynamic link problem of the driver being linked without -ldbi)",th->dbdriver);
return -1;
}
/* and connect to driver */
th->conn=dbi_conn_open(driver);
/* and handle errors */
if (! th->conn) {
rrd_set_error( "libdbi - could not open connection to driver %s",th->dbdriver);
dbi_shutdown();
return -1;
}
}
if (th->connected) {
rrd_set_error( "we are already connected - can not set parameter %s=%s",key,value);
_sql_close(th);
return -1;
}
if (getenv("RRDDEBUGSQL")) {
fprintf(stderr,"RRDDEBUGSQL: %li: setting option %s to %s\n",time(NULL),key,value );
}
if (strcmp(key, "port") == 0) {
if (dbi_conn_set_option_numeric(th->conn,key,atoi(value))) {
dbi_conn_error(th->conn,(const char**)&dbi_errstr);
rrd_set_error( "libdbi: problems setting %s to %d - %s",key,value,dbi_errstr);
_sql_close(th);
return -1;
}
} else {
if (dbi_conn_set_option(th->conn,key,value)) {
dbi_conn_error(th->conn,(const char**)&dbi_errstr);
rrd_set_error( "libdbi: problems setting %s to %s - %s",key,value,dbi_errstr);
_sql_close(th);
return -1;
}
}
return 0;
}
static int cdbi_connect_database (cdbi_database_t *db) /* {{{ */
{
dbi_driver driver;
dbi_conn connection;
size_t i;
int status;
if (db->connection != NULL)
{
status = dbi_conn_ping (db->connection);
if (status != 0) /* connection is alive */
return (0);
dbi_conn_close (db->connection);
db->connection = NULL;
}
driver = dbi_driver_open_r (db->driver, dbi_instance);
if (driver == NULL)
{
ERROR ("dbi plugin: cdbi_connect_database: dbi_driver_open_r (%s) failed.",
db->driver);
INFO ("dbi plugin: Maybe the driver isn't installed? "
"Known drivers are:");
for (driver = dbi_driver_list_r (NULL, dbi_instance);
driver != NULL;
driver = dbi_driver_list_r (driver, dbi_instance))
{
INFO ("dbi plugin: * %s", dbi_driver_get_name (driver));
}
return (-1);
}
connection = dbi_conn_open (driver);
if (connection == NULL)
{
ERROR ("dbi plugin: cdbi_connect_database: dbi_conn_open (%s) failed.",
db->driver);
return (-1);
}
/* Set all the driver options. Because this is a very very very generic
* interface, the error handling is kind of long. If an invalid option is
* encountered, it will get a list of options understood by the driver and
* report that as `INFO'. This way, users hopefully don't have too much
* trouble finding out how to configure the plugin correctly.. */
for (i = 0; i < db->driver_options_num; i++)
{
if (db->driver_options[i].is_numeric)
{
status = dbi_conn_set_option_numeric (connection,
db->driver_options[i].key, db->driver_options[i].value.numeric);
if (status != 0)
{
char errbuf[1024];
ERROR ("dbi plugin: cdbi_connect_database (%s): "
"dbi_conn_set_option_numeric (\"%s\", %i) failed: %s.",
db->name,
db->driver_options[i].key, db->driver_options[i].value.numeric,
cdbi_strerror (connection, errbuf, sizeof (errbuf)));
}
}
else
{
status = dbi_conn_set_option (connection,
db->driver_options[i].key, db->driver_options[i].value.string);
if (status != 0)
{
char errbuf[1024];
ERROR ("dbi plugin: cdbi_connect_database (%s): "
"dbi_conn_set_option (\"%s\", \"%s\") failed: %s.",
db->name,
db->driver_options[i].key, db->driver_options[i].value.string,
cdbi_strerror (connection, errbuf, sizeof (errbuf)));
}
}
if (status != 0)
{
char const *opt;
INFO ("dbi plugin: This is a list of all options understood "
"by the `%s' driver:", db->driver);
for (opt = dbi_conn_get_option_list (connection, NULL);
opt != NULL;
opt = dbi_conn_get_option_list (connection, opt))
{
INFO ("dbi plugin: * %s", opt);
}
dbi_conn_close (connection);
return (-1);
}
} /* for (i = 0; i < db->driver_options_num; i++) */
status = dbi_conn_connect (connection);
if (status != 0)
{
char errbuf[1024];
ERROR ("dbi plugin: cdbi_connect_database (%s): "
"dbi_conn_connect failed: %s",
db->name, cdbi_strerror (connection, errbuf, sizeof (errbuf)));
dbi_conn_close (connection);
return (-1);
}
if (db->select_db != NULL)
{
status = dbi_conn_select_db (connection, db->select_db);
if (status != 0)
{
char errbuf[1024];
WARNING ("dbi plugin: cdbi_connect_database (%s): "
"dbi_conn_select_db (%s) failed: %s. Check the `SelectDB' option.",
db->name, db->select_db,
cdbi_strerror (connection, errbuf, sizeof (errbuf)));
dbi_conn_close (connection);
return (-1);
}
}
db->connection = connection;
return (0);
} /* }}} int cdbi_connect_database */