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Document Dbh.test_reactive, return saner values 

In the FreeSWITCH core, the return value of switch_case_db_test_reactive
is ignored, but it is usable in LUA modules (and other bindings via
SWIG). The LUA API example[1] shows how to check the return value, but
that example miserably fails if the database did not exist before.

Changes:

 - Document the expected behavior of the test_reactive function.
 - Assert that test_sql and sql_reactive are both given. If either
   query is not given, the caller is using the wrong API.
 - When SCF_AUTO_SCHEMAS is cleared, use the return value of the
   test_sql execution. Does anybody use this? Why not remove it?
 - Do not unconditionally return SWITCH_FALSE when test_sql fails,
   instead allow it to become SWITCH_TRUE when reactive_sql passes.
 - Remove the unnecessary test_sql check for SCDB_TYPE_CORE_DB
   (this is now enforced through an assert check). (+reindent)
 - Clarify the error message of drop_sql, prepending "Ignoring" to
   the "SQL ERR" message.
 - LUA: Do not print "DBH NOT Connected" if the query fails. This was
   the initial source of confusion.

 [1]: https://confluence.freeswitch.org/display/FREESWITCH/Lua+API+Reference
This commit is contained in:
Peter Wu 2014-09-15 15:36:48 +02:00
parent bbcd4a86d1
commit 8e4423f126
3 changed files with 44 additions and 29 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/mod/languages/mod_lua/freeswitch_lua.cpp
View File

@ -394,9 +394,9 @@ bool Dbh::test_reactive(char *test_sql, char *drop_sql, char *reactive_sql)
if (switch_cache_db_test_reactive(dbh, test_sql, drop_sql, reactive_sql) == SWITCH_TRUE) {
return true;
}
} else {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "DBH NOT Connected.\n");
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "DBH NOT Connected.\n");
return false;
}

4
src/mod/legacy/languages/mod_lua/freeswitch_lua.cpp
View File

@ -394,9 +394,9 @@ bool Dbh::test_reactive(char *test_sql, char *drop_sql, char *reactive_sql)
if (switch_cache_db_test_reactive(dbh, test_sql, drop_sql, reactive_sql) == SWITCH_TRUE) {
return true;
}
} else {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "DBH NOT Connected.\n");
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "DBH NOT Connected.\n");
return false;
}

65
src/switch_core_sqldb.c
View File

@ -1267,20 +1267,36 @@ SWITCH_DECLARE(switch_status_t) switch_cache_db_execute_sql_callback_err(switch_
return status;
}
/*!
* \brief Performs test_sql and if it fails performs drop_sql and reactive_sql.
*
* If auto-clear-sql is disabled, then this function will do nothing and it is
* assumed that the queries are not needed. If auto-create-schemas is disabled,
* then just test_sql is executed, but drop_sql and reactive_sql are not.
*
* Otherwise, test_sql gets executed. If that succeeds, then there is nothing to
* do. Otherwise drop_sql is executed (its result is ignored) and then finally
* reactive_sql is executed.
*
* \return If auto-create-schemas is enabled, SWITCH_TRUE is returned if
* test_sql succeeds, SWITCH_FALSE otherwise. If reactive_sql is executed
* successfully SWITCH_TRUE is returned, otherwise SWITCH_FALSE is returned.
*/
SWITCH_DECLARE(switch_bool_t) switch_cache_db_test_reactive(switch_cache_db_handle_t *dbh,
const char *test_sql, const char *drop_sql, const char *reactive_sql)
{
char *errmsg;
switch_bool_t r = SWITCH_TRUE;
switch_mutex_t *io_mutex = dbh->io_mutex;
switch_assert(test_sql != NULL);
switch_assert(reactive_sql != NULL);
if (!switch_test_flag((&runtime), SCF_CLEAR_SQL)) {
return SWITCH_TRUE;
}
if (!switch_test_flag((&runtime), SCF_AUTO_SCHEMAS)) {
switch_cache_db_execute_sql(dbh, (char *)test_sql, NULL);
return SWITCH_TRUE;
return switch_cache_db_execute_sql(dbh, (char *)test_sql, NULL);
}
if (io_mutex) switch_mutex_lock(io_mutex);
@ -1289,49 +1305,48 @@ SWITCH_DECLARE(switch_bool_t) switch_cache_db_test_reactive(switch_cache_db_hand
case SCDB_TYPE_PGSQL:
{
if (switch_pgsql_handle_exec(dbh->native_handle.pgsql_dbh, test_sql, NULL) != SWITCH_PGSQL_SUCCESS) {
r = SWITCH_FALSE;
if (drop_sql) {
switch_pgsql_handle_exec(dbh->native_handle.pgsql_dbh, drop_sql, NULL);
}
switch_pgsql_handle_exec(dbh->native_handle.pgsql_dbh, reactive_sql, NULL);
r = switch_pgsql_handle_exec(dbh->native_handle.pgsql_dbh, reactive_sql, NULL) == SWITCH_PGSQL_SUCCESS;
}
}
break;
case SCDB_TYPE_ODBC:
{
if (switch_odbc_handle_exec(dbh->native_handle.odbc_dbh, test_sql, NULL, NULL) != SWITCH_ODBC_SUCCESS) {
r = SWITCH_FALSE;
if (drop_sql) {
switch_odbc_handle_exec(dbh->native_handle.odbc_dbh, drop_sql, NULL, NULL);
}
switch_odbc_handle_exec(dbh->native_handle.odbc_dbh, reactive_sql, NULL, NULL);
r = switch_odbc_handle_exec(dbh->native_handle.odbc_dbh, reactive_sql, NULL, NULL) == SWITCH_ODBC_SUCCESS;
}
}
break;
case SCDB_TYPE_CORE_DB:
{
if (test_sql) {
switch_core_db_exec(dbh->native_handle.core_db_dbh, test_sql, NULL, NULL, &errmsg);
char *errmsg = NULL;
switch_core_db_exec(dbh->native_handle.core_db_dbh, test_sql, NULL, NULL, &errmsg);
if (errmsg) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "SQL ERR [%s]\n[%s]\nAuto Generating Table!\n", errmsg, test_sql);
switch_core_db_free(errmsg);
errmsg = NULL;
if (drop_sql) {
switch_core_db_exec(dbh->native_handle.core_db_dbh, drop_sql, NULL, NULL, &errmsg);
}
if (errmsg) {
r = SWITCH_FALSE;
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "SQL ERR [%s]\n[%s]\nAuto Generating Table!\n", errmsg, test_sql);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Ignoring SQL ERR [%s]\n[%s]\n", errmsg, drop_sql);
switch_core_db_free(errmsg);
errmsg = NULL;
if (drop_sql) {
switch_core_db_exec(dbh->native_handle.core_db_dbh, drop_sql, NULL, NULL, &errmsg);
}
if (errmsg) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "SQL ERR [%s]\n[%s]\n", errmsg, drop_sql);
switch_core_db_free(errmsg);
errmsg = NULL;
}
switch_core_db_exec(dbh->native_handle.core_db_dbh, reactive_sql, NULL, NULL, &errmsg);
if (errmsg) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "SQL ERR [%s]\n[%s]\n", errmsg, reactive_sql);
switch_core_db_free(errmsg);
errmsg = NULL;
}
}
switch_core_db_exec(dbh->native_handle.core_db_dbh, reactive_sql, NULL, NULL, &errmsg);
if (errmsg) {
r = SWITCH_FALSE;
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "SQL ERR [%s]\n[%s]\n", errmsg, reactive_sql);
switch_core_db_free(errmsg);
errmsg = NULL;
} else {
r = SWITCH_TRUE;
}
}
}