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MCOL-2178 Cleanup of MIGR:: singleton from the plugin code.

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Disable SP execution by the smart handlers for now.

    Add session variables to Enable/Disable select/derived/group_by
    handlers. Defaulted to Enable.
This commit is contained in:
Gagan Goel
2019-08-04 21:50:50 -04:00
parent d62b66ecf7
commit 1c460f3ba5
11 changed files with 284 additions and 726 deletions
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57
dbcon/mysql/ha_mcs_sysvars.cpp
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@@ -71,6 +71,33 @@ static MYSQL_THDVAR_ULONGLONG(
1
);
static MYSQL_THDVAR_BOOL(
select_handler,
PLUGIN_VAR_NOCMDARG,
"Enable/Disable the MCS select_handler",
NULL,
NULL,
1
);
static MYSQL_THDVAR_BOOL(
derived_handler,
PLUGIN_VAR_NOCMDARG,
"Enable/Disable the MCS derived_handler",
NULL,
NULL,
1
);
static MYSQL_THDVAR_BOOL(
group_by_handler,
PLUGIN_VAR_NOCMDARG,
"Enable/Disable the MCS group_by_handler",
NULL,
NULL,
1
);
// legacy system variables
@@ -256,6 +283,9 @@ st_mysql_sys_var* mcs_system_variables[] =
MYSQL_SYSVAR(compression_type),
MYSQL_SYSVAR(fe_conn_info_ptr),
MYSQL_SYSVAR(original_optimizer_flags),
MYSQL_SYSVAR(select_handler),
MYSQL_SYSVAR(derived_handler),
MYSQL_SYSVAR(group_by_handler),
MYSQL_SYSVAR(decimal_scale),
MYSQL_SYSVAR(use_decimal_scale),
MYSQL_SYSVAR(ordered_only),
@@ -307,6 +337,33 @@ void set_original_optimizer_flags(ulonglong ptr, THD* thd)
THDVAR(current_thd, original_optimizer_flags) = (uint64_t)(ptr);
}
bool get_select_handler(THD* thd)
{
return ( thd == NULL ) ? false : THDVAR(thd, select_handler);
}
void set_select_handler(THD* thd, bool value)
{
THDVAR(thd, select_handler) = value;
}
bool get_derived_handler(THD* thd)
{
return ( thd == NULL ) ? false : THDVAR(thd, derived_handler);
}
void set_derived_handler(THD* thd, bool value)
{
THDVAR(thd, derived_handler) = value;
}
bool get_group_by_handler(THD* thd)
{
return ( thd == NULL ) ? false : THDVAR(thd, group_by_handler);
}
void set_group_by_handler(THD* thd, bool value)
{
THDVAR(thd, group_by_handler) = value;
}
void set_compression_type(THD* thd, ulong value)
{
THDVAR(thd, compression_type) = value;