b32af705e6
The routing capabilities now define the type of output the reply processing chain expects. Currently, this only consists of two capabilities; complete packet output and contiguous buffer output. The latter implies the former.
63 lines
2.0 KiB
C
63 lines
2.0 KiB
C
#pragma once
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/*
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* Copyright (c) 2016 MariaDB Corporation Ab
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*
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* Use of this software is governed by the Business Source License included
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* in the LICENSE.TXT file and at www.mariadb.com/bsl.
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*
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* Change Date: 2019-07-01
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*
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* On the date above, in accordance with the Business Source License, use
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* of this software will be governed by version 2 or later of the General
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* Public License.
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*/
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/**
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* @file routing.h - Common definitions and declarations for routers and filters.
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*/
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#include <maxscale/cdefs.h>
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MXS_BEGIN_DECLS
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/**
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* Routing capability type. Indicates what kind of input a router or
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* a filter accepts.
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*
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* @note The values of the capabilities here *must* be between 0x0000
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* and 0x8000, that is, bits 0 to 15.
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*/
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typedef enum routing_capability
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{
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/**< Statements are delivered one per buffer. */
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RCAP_TYPE_STMT_INPUT = 0x0001, /* 0b0000000000000001 */
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/**< Each delivered buffer is contiguous; implies RCAP_TYPE_STMT_INPUT. */
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RCAP_TYPE_CONTIGUOUS_INPUT = 0x0003, /* 0b0000000000000011 */
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/**< The transaction state and autocommit mode of the session are tracked;
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implies RCAP_TYPE_CONTIGUOUS_INPUT and RCAP_TYPE_STMT_INPUT. */
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RCAP_TYPE_TRANSACTION_TRACKING = 0x0007, /* 0b0000000000000111 */
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/**< Responses are delivered one per buffer. */
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RCAP_TYPE_STMT_OUTPUT = 0x0010, /* 0b0000000000010000 */
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/**< Each delivered buffer is contiguous; implies RCAP_TYPE_STMT_OUTPUT. */
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RCAP_TYPE_CONTIGUOUS_OUTPUT = 0x0030, /* 0b0000000000110000 */
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} routing_capability_t;
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#define RCAP_TYPE_NONE 0
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/**
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* Determines whether a particular capability type is required.
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*
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* @param capabilites The capability bits to be tested.
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* @param type A particular capability type or a bitmask of types.
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*
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* @return True, if @c type is present in @c capabilities.
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*/
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static inline bool rcap_type_required(uint64_t capabilities, uint64_t type)
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{
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return (capabilities & type) == type;
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}
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MXS_END_DECLS
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