61 lines
1.7 KiB
C
61 lines
1.7 KiB
C
#pragma once
|
|
/*
|
|
* Copyright (c) 2016 MariaDB Corporation Ab
|
|
*
|
|
* Use of this software is governed by the Business Source License included
|
|
* in the LICENSE.TXT file and at www.mariadb.com/bsl11.
|
|
*
|
|
* Change Date: 2020-01-01
|
|
*
|
|
* On the date above, in accordance with the Business Source License, use
|
|
* of this software will be governed by version 2 or later of the General
|
|
* Public License.
|
|
*/
|
|
|
|
/**
|
|
* @file hint.h The generic hint data that may be attached to buffers
|
|
*/
|
|
|
|
#include <maxscale/cdefs.h>
|
|
#include <maxscale/debug.h>
|
|
|
|
MXS_BEGIN_DECLS
|
|
|
|
/**
|
|
* The types of hint that are supported by the generic hinting mechanism.
|
|
*/
|
|
typedef enum
|
|
{
|
|
HINT_ROUTE_TO_MASTER = 1,
|
|
HINT_ROUTE_TO_SLAVE,
|
|
HINT_ROUTE_TO_NAMED_SERVER,
|
|
HINT_ROUTE_TO_UPTODATE_SERVER, /*< not supported by RWSplit and HintRouter */
|
|
HINT_ROUTE_TO_ALL, /*< not supported by RWSplit, supported by HintRouter */
|
|
HINT_PARAMETER
|
|
} HINT_TYPE;
|
|
|
|
/**
|
|
* A generic hint.
|
|
*
|
|
* A hint has a type associated with it and may optionally have hint
|
|
* specific data.
|
|
* Multiple hints may be attached to a single buffer.
|
|
*/
|
|
typedef struct hint
|
|
{
|
|
HINT_TYPE type; /*< The Type of hint */
|
|
void *data; /*< Type specific data */
|
|
void *value; /*< Parameter value for hint */
|
|
unsigned int dsize; /*< Size of the hint data */
|
|
struct hint *next; /*< Another hint for this buffer */
|
|
} HINT;
|
|
|
|
HINT *hint_alloc(HINT_TYPE, void *, unsigned int);
|
|
HINT *hint_create_parameter(HINT *, char *, const char *);
|
|
HINT *hint_create_route(HINT *, HINT_TYPE, const char *);
|
|
void hint_free(HINT *);
|
|
HINT *hint_dup(const HINT *);
|
|
bool hint_exists(HINT **, HINT_TYPE);
|
|
|
|
MXS_END_DECLS
|