mysql::binlog::event::codecs::binary::Transaction_payload Class Reference

Binary codec for the transaction payload log event. More...

#include <binary.h>

Inheritance diagram for mysql::binlog::event::codecs::binary::Transaction_payload:

Public Types
enum	fields { OTW_PAYLOAD_HEADER_END_MARK = 0 , OTW_PAYLOAD_SIZE_FIELD = 1 , OTW_PAYLOAD_COMPRESSION_TYPE_FIELD = 2 , OTW_PAYLOAD_UNCOMPRESSED_SIZE_FIELD = 3 }
	The on-the-wire fields. More...

Public Member Functions
	Transaction_payload ()=default
std::pair< std::size_t, bool >	decode (const unsigned char *from, std::size_t size, Binary_log_event &to) const override
	This member function shall decode the contents of the buffer provided and fill in the event referenced. More...
std::pair< std::size_t, bool >	encode (const Binary_log_event &from, unsigned char *to, std::size_t size) const override
	This member function shall encode the contents of the event referenced and store the result in the buffer provided. More...
Public Member Functions inherited from mysql::binlog::event::codecs::binary::Base_codec
	Base_codec ()=default
	Base_codec (Base_codec &&) noexcept=default
Base_codec &	operator= (Base_codec &&) noexcept=default
	Base_codec (const Base_codec &) noexcept=default
Base_codec &	operator= (const Base_codec &)=default
	~Base_codec () override=default
Public Member Functions inherited from mysql::binlog::event::codecs::Codec
virtual	~Codec ()=default

Additional Inherited Members
Protected Member Functions inherited from mysql::binlog::event::codecs::binary::Base_codec
Event_reader &	reader ()
Protected Attributes inherited from mysql::binlog::event::codecs::binary::Base_codec
Event_reader *	m_reader = nullptr

Detailed Description

Binary codec for the transaction payload log event.

Member Enumeration Documentation

fields

enum mysql::binlog::event::codecs::binary::Transaction_payload::fields

The on-the-wire fields.

Enumerator
OTW_PAYLOAD_HEADER_END_MARK	Marks the end of the payload header.
OTW_PAYLOAD_SIZE_FIELD	The payload field.
OTW_PAYLOAD_COMPRESSION_TYPE_FIELD	The compression type field.
OTW_PAYLOAD_UNCOMPRESSED_SIZE_FIELD	The uncompressed size field.

Constructor & Destructor Documentation

Transaction_payload()

mysql::binlog::event::codecs::binary::Transaction_payload::Transaction_payload ( )

default

Member Function Documentation

decode()

std::pair< std::size_t, bool > mysql::binlog::event::codecs::binary::Transaction_payload::decode ( const unsigned char *  from, std::size_t  size, Binary_log_event &  to  ) const

overridevirtual

This member function shall decode the contents of the buffer provided and fill in the event referenced.

This is the decoder member function for the TLV encoded set of values for the Transaction payload event.

Note that the event provided needs to be of type TRANSACTION_PAYLOAD_EVENT.

Parameters

from	the buffer to decode
size	the size of the buffer to decode.
to	the event to store the decoded information into.

Returns

a pair containing the amount of bytes decoded and whether there was an error or not. False if no error, true otherwise.

Note that the log event must have the appropriate type code: TRANSACTION_PAYLOAD_EVENT to be compatible with this specific decoder. If it is not, an error shall be returned

Parameters

from	the buffer to decode from.
size	the buffer size.
to	The log event to decode to.

Returns

a pair containing the number of bytes decoded and whether there was an error or not. False if no error, true otherwise.

Implements mysql::binlog::event::codecs::binary::Base_codec.

encode()

std::pair< std::size_t, bool > mysql::binlog::event::codecs::binary::Transaction_payload::encode ( const Binary_log_event &  from, unsigned char *  to, std::size_t  size  ) const

overridevirtual

This member function shall encode the contents of the event referenced and store the result in the buffer provided.

This is the encoder member function for the TLV encoded set of values for the Transaction payload event.

Note that the event referenced needs to be of type TRANSACTION_PAYLOAD_EVENT.

Parameters

from	the event to encode.
to	the buffer where to store the encoded event.
size	the size of the buffer.

Returns

a pair containing the amount of bytes encoded and whether there was an error or not.

Note that the log event must have the appropriate type code: TRANSACTION_PAYLOAD_EVENT to be compatible with this specific enccoder. If it is not, an error shall be returned

Parameters

from	The log event to decode to.
to	the buffer to decode from.
size	the buffer size.

Returns

a pair containing the number of bytes decoded and whether there was an error or not. False if no error, true otherwise.

Implements mysql::binlog::event::codecs::binary::Base_codec.

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The documentation for this class was generated from the following files:

• libs/mysql/binlog/event/codecs/binary.h
• libs/mysql/binlog/event/codecs/binary.cpp