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expand per-thread db caching to odbc

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git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@15453 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Anthony Minessale
2009-11-12 19:54:50 +00:00
parent a64e1a5124
commit ba2e181292
6 changed files with 317 additions and 245 deletions
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247
src/switch_odbc.c
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@@ -130,6 +130,132 @@ SWITCH_DECLARE(switch_odbc_status_t) switch_odbc_handle_disconnect(switch_odbc_h
#endif
}
#ifdef SWITCH_HAVE_ODBC
static int db_is_up(switch_odbc_handle_t *handle)
{
int ret = 0;
SQLHSTMT stmt = NULL;
SQLLEN m = 0;
int result;
switch_event_t *event;
switch_odbc_status_t recon = 0;
char *err_str = NULL;
SQLCHAR sql[255] = "";
int max_tries = 120;
int code = 0;
SQLRETURN rc;
SQLSMALLINT nresultcols;
top:
if (!handle) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "No DB Handle\n");
goto done;
}
if (handle->is_firebird) {
strcpy((char *) sql, "select first 1 * from RDB$RELATIONS");
} else {
strcpy((char *) sql, "select 1");
}
if (SQLAllocHandle(SQL_HANDLE_STMT, handle->con, &stmt) != SQL_SUCCESS) {
code = __LINE__;
goto error;
}
if (SQLPrepare(stmt, sql, SQL_NTS) != SQL_SUCCESS) {
code = __LINE__;
goto error;
}
result = SQLExecute(stmt);
if (result != SQL_SUCCESS && result != SQL_SUCCESS_WITH_INFO) {
code = __LINE__;
goto error;
}
SQLRowCount (stmt, &m);
rc = SQLNumResultCols (stmt, &nresultcols);
if (rc != SQL_SUCCESS){
code = __LINE__;
goto error;
}
ret = (int) nresultcols;
/* determine statement type */
if (nresultcols <= 0) {
/* statement is not a select statement */
code = __LINE__;
goto error;
}
goto done;
error:
err_str = switch_odbc_handle_get_error(handle, stmt);
recon = switch_odbc_handle_connect(handle);
max_tries--;
if (switch_event_create(&event, SWITCH_EVENT_TRAP) == SWITCH_STATUS_SUCCESS) {
switch_event_add_header(event, SWITCH_STACK_BOTTOM, "Failure-Message", "The sql server is not responding for DSN %s [%s][%d]",
switch_str_nil(handle->dsn), switch_str_nil(err_str), code);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "The sql server is not responding for DSN %s [%s][%d]\n",
switch_str_nil(handle->dsn), switch_str_nil(err_str), code);
if (recon == SWITCH_ODBC_SUCCESS) {
switch_event_add_header(event, SWITCH_STACK_BOTTOM, "Additional-Info", "The connection has been re-established");
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "The connection has been re-established\n");
} else {
switch_event_add_header(event, SWITCH_STACK_BOTTOM, "Additional-Info", "The connection could not be re-established");
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "The connection could not be re-established\n");
}
if (!max_tries) {
switch_event_add_header(event, SWITCH_STACK_BOTTOM, "Additional-Info", "Giving up!");
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Giving up!\n");
}
switch_event_fire(&event);
}
if (!max_tries) {
goto done;
}
switch_safe_free(err_str);
switch_yield(1000000);
goto top;
done:
switch_safe_free(err_str);
if (stmt) {
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
}
return ret;
}
#endif
SWITCH_DECLARE(switch_odbc_status_t) switch_odbc_statement_handle_free(switch_odbc_statement_handle_t * stmt)
{
if (!stmt || ! *stmt) {
return SWITCH_ODBC_FAIL;
}
#ifdef SWITCH_HAVE_ODBC
SQLFreeHandle(SQL_HANDLE_STMT, *stmt);
*stmt = NULL;
return SWITCH_ODBC_SUCCESS;
#else
return SWITCH_ODBC_FAIL;
#endif
}
SWITCH_DECLARE(switch_odbc_status_t) switch_odbc_handle_connect(switch_odbc_handle_t *handle)
{
#ifdef SWITCH_HAVE_ODBC
@@ -206,7 +332,7 @@ SWITCH_DECLARE(switch_odbc_status_t) switch_odbc_handle_connect(switch_odbc_hand
} else {
handle->is_firebird = FALSE;
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Connected to [%s]\n", handle->dsn);
handle->state = SWITCH_ODBC_STATE_CONNECTED;
return SWITCH_ODBC_SUCCESS;
@@ -215,125 +341,6 @@ SWITCH_DECLARE(switch_odbc_status_t) switch_odbc_handle_connect(switch_odbc_hand
#endif
}
#ifdef SWITCH_HAVE_ODBC
static int db_is_up(switch_odbc_handle_t *handle)
{
int ret = 0;
SQLHSTMT stmt = NULL;
SQLLEN m = 0;
int result;
switch_event_t *event;
switch_odbc_status_t recon = 0;
char *err_str = NULL;
SQLCHAR sql[255] = "";
int max_tries = 120;
SQLRETURN rc;
SQLSMALLINT nresultcols;
top:
if (!handle) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "No DB Handle\n");
goto done;
}
if (handle->is_firebird) {
strcpy((char *) sql, "select first 1 * from RDB$RELATIONS");
} else {
strcpy((char *) sql, "select 1");
}
if (SQLAllocHandle(SQL_HANDLE_STMT, handle->con, &stmt) != SQL_SUCCESS) {
goto error;
}
if (SQLPrepare(stmt, sql, SQL_NTS) != SQL_SUCCESS) {
goto error;
}
result = SQLExecute(stmt);
if (result != SQL_SUCCESS && result != SQL_SUCCESS_WITH_INFO) {
goto error;
}
SQLRowCount (stmt, &m);
rc = SQLNumResultCols (stmt, &nresultcols);
if (rc != SQL_SUCCESS){
goto error;
}
ret = (int) nresultcols;
/* determine statement type */
if (nresultcols <= 0) {
/* statement is not a select statement */
goto error;
}
goto done;
error:
err_str = switch_odbc_handle_get_error(handle, stmt);
recon = switch_odbc_handle_connect(handle);
max_tries--;
if (switch_event_create(&event, SWITCH_EVENT_TRAP) == SWITCH_STATUS_SUCCESS) {
switch_event_add_header(event, SWITCH_STACK_BOTTOM, "Failure-Message", "The sql server is not responding for DSN %s [%s]",
switch_str_nil(handle->dsn), switch_str_nil(err_str));
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "The sql server is not responding for DSN %s [%s]\n",
switch_str_nil(handle->dsn), switch_str_nil(err_str));
if (recon == SWITCH_ODBC_SUCCESS) {
switch_event_add_header(event, SWITCH_STACK_BOTTOM, "Additional-Info", "The connection has been re-established");
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "The connection has been re-established\n");
} else {
switch_event_add_header(event, SWITCH_STACK_BOTTOM, "Additional-Info", "The connection could not be re-established");
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "The connection could not be re-established\n");
}
if (!max_tries) {
switch_event_add_header(event, SWITCH_STACK_BOTTOM, "Additional-Info", "Giving up!");
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Giving up!\n");
}
switch_event_fire(&event);
}
if (!max_tries) {
goto done;
}
switch_safe_free(err_str);
switch_yield(1000000);
goto top;
done:
switch_safe_free(err_str);
if (stmt) {
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
}
return ret;
}
#endif
SWITCH_DECLARE(switch_odbc_status_t) switch_odbc_statement_handle_free(switch_odbc_statement_handle_t * stmt)
{
if (!stmt || ! *stmt) {
return SWITCH_ODBC_FAIL;
}
#ifdef SWITCH_HAVE_ODBC
SQLFreeHandle(SQL_HANDLE_STMT, *stmt);
*stmt = NULL;
return SWITCH_ODBC_SUCCESS;
#else
return SWITCH_ODBC_FAIL;
#endif
}
SWITCH_DECLARE(switch_odbc_status_t) switch_odbc_handle_exec_string(switch_odbc_handle_t *handle,
char *sql,
char *resbuf,