mysql::binlog::event::codecs::Codec Class Reference

This is the abstract and base class for binary log codecs. More...

#include <base.h>

Inheritance diagram for mysql::binlog::event::codecs::Codec:

Public Member Functions
virtual std::pair< std::size_t, bool >	decode (const unsigned char *from, std::size_t size, Binary_log_event &to) const =0
	Member function that shall decode the contents of the given buffer into a binary log event. More...
virtual std::pair< std::size_t, bool >	encode (const Binary_log_event &from, unsigned char *to, std::size_t size) const =0
	Member function that shall encode the contents of the given binary log event into an in memory buffer. More...
virtual	~Codec ()=default

Detailed Description

This is the abstract and base class for binary log codecs.

It defines the codec API. Implementations of this class must be stateless.

Constructor & Destructor Documentation

~Codec()

virtual mysql::binlog::event::codecs::Codec::~Codec ( )

virtualdefault

Member Function Documentation

decode()

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

pure virtual

Member function that shall decode the contents of the given buffer into a binary log event.

Parameters

from	the buffer containing the encoded event.
size	the length of the data in the buffer.
to	the binary log event to populate.

Returns

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

Implemented in mysql::binlog::event::codecs::binary::Transaction_payload, mysql::binlog::event::codecs::binary::Heartbeat, and mysql::binlog::event::codecs::binary::Base_codec.

encode()

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

pure virtual

Member function that shall encode the contents of the given binary log event into an in memory buffer.

Parameters

from	the binary log event to encode.
to	the buffer where the encoded event should be saved into.
size	the size of the buffer.

Returns

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

Implemented in mysql::binlog::event::codecs::binary::Transaction_payload, mysql::binlog::event::codecs::binary::Heartbeat, and mysql::binlog::event::codecs::binary::Base_codec.

---

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

• libs/mysql/binlog/event/codecs/base.h