115 lines
3.3 KiB
C++
115 lines
3.3 KiB
C++
/* Copyright (c) 2014, 2018, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License, version 2.0, for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#ifndef RECOVERY_MESSAGE_INCLUDED
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#define RECOVERY_MESSAGE_INCLUDED
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#include <set>
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#include <string>
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#include <vector>
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#include "my_inttypes.h"
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#include "plugin/group_replication/include/gcs_plugin_messages.h"
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class Recovery_message : public Plugin_gcs_message {
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public:
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enum enum_payload_item_type {
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// This type should not be used anywhere.
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PIT_UNKNOWN = 0,
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// Length of the payload item: 2 bytes
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PIT_RECOVERY_MESSAGE_TYPE = 1,
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// Length of the payload item: variable
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PIT_MEMBER_UUID = 2,
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// No valid type codes can appear after this one.
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PIT_MAX = 3
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};
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/**
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The several recovery type messages.
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*/
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typedef enum {
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/**This type should not be used anywhere.*/
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RECOVERY_UNKNOWN = 0,
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/**Recovery ended, member is online.*/
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RECOVERY_END_MESSAGE = 1,
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/**Donor transmitted all data (for future use)*/
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DONOR_FINISHED_MESSAGE = 2,
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/**The end of the enum.*/
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RECOVERY_MESSAGE_TYPE_END = 3
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} Recovery_message_type;
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/**
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Message constructor
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@param[in] type the recovery message type
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@param[in] member_uuid the origination member uuid
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*/
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Recovery_message(Recovery_message_type type, const std::string &member_uuid);
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/**
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Message destructor
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*/
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virtual ~Recovery_message();
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/**
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Message constructor for raw data
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@param[in] buf raw data
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@param[in] len raw length
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*/
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Recovery_message(const uchar *buf, size_t len);
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/** Returns this recovery message type */
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Recovery_message_type get_recovery_message_type() {
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return recovery_message_type;
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}
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/** Returns this message sender's uuid */
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const std::string &get_member_uuid() { return member_uuid; }
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protected:
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/**
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Encodes the message contents for transmission.
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@param[out] buffer the message buffer to be written
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*/
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void encode_payload(std::vector<unsigned char> *buffer) const;
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/**
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Message decoding method
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@param[in] buffer the received data
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*/
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void decode_payload(const unsigned char *buffer, const unsigned char *);
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private:
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/**The message type*/
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Recovery_message_type recovery_message_type;
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/**The member uuid where the message originated*/
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std::string member_uuid;
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};
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#endif /* RECOVERY_MESSAGE_INCLUDED */
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