87 lines
2.6 KiB
C
87 lines
2.6 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 protocol.h
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*
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* The listener definitions for MaxScale
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*
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* @verbatim
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* Revision History
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*
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* Date Who Description
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* 22/01/16 Martin Brampton Initial implementation
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* 31/05/16 Martin Brampton Add API entry for connection limit
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*
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* @endverbatim
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*/
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#include <maxscale/cdefs.h>
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#include <maxscale/buffer.h>
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MXS_BEGIN_DECLS
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struct dcb;
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struct server;
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struct session;
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/**
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* @verbatim
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* The operations that can be performed on the descriptor
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*
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* read EPOLLIN handler for the socket
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* write MaxScale data write entry point
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* write_ready EPOLLOUT handler for the socket, indicates
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* that the socket is ready to send more data
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* error EPOLLERR handler for the socket
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* hangup EPOLLHUP handler for the socket
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* accept Accept handler for listener socket only
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* connect Create a connection to the specified server
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* for the session pased in
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* close MaxScale close entry point for the socket
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* listen Create a listener for the protocol
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* auth Authentication entry point
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* session Session handling entry point
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* @endverbatim
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*
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* This forms the "module object" for protocol modules within the gateway.
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*
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* @see load_module
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*/
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typedef struct gw_protocol
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{
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int (*read)(struct dcb *);
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int (*write)(struct dcb *, GWBUF *);
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int (*write_ready)(struct dcb *);
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int (*error)(struct dcb *);
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int (*hangup)(struct dcb *);
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int (*accept)(struct dcb *);
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int (*connect)(struct dcb *, struct server *, struct session *);
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int (*close)(struct dcb *);
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int (*listen)(struct dcb *, char *);
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int (*auth)(struct dcb *, struct server *, struct session *, GWBUF *);
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int (*session)(struct dcb *, void *);
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char *(*auth_default)();
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int (*connlimit)(struct dcb *, int limit);
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} GWPROTOCOL;
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/**
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* The GWPROTOCOL version data. The following should be updated whenever
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* the GWPROTOCOL structure is changed. See the rules defined in modinfo.h
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* that define how these numbers should change.
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*/
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#define GWPROTOCOL_VERSION {1, 1, 0}
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MXS_END_DECLS
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