mysql::csa::Cached_event_payload Class Reference

Implementation of the IReader_event which keeps event raw payload until decoded. More...

#include <cached_event_payload.h>

Inheritance diagram for mysql::csa::Cached_event_payload:

Public Member Functions
	Cached_event_payload (const Event_payload &payload, std::shared_ptr< Log_event > fde)
	Is constructed using payload data/metadata and associated fde. More...
std::shared_ptr< Log_event >	decode () override
	Decode function, which decodes payload and returns Log event smart pointer. More...
void	reset (const Format_description_log_event *) override
	Resets event state. More...
Public Member Functions inherited from mysql::csa::IReader_event
virtual	~IReader_event ()=default

Private Attributes
uint8_t *	m_data
	Event data, owning pointer returned by the reader (legacy design) More...
std::size_t	m_length
	Event length. More...
bool	m_verify_checksum {false}
	Information on whether to verify checksum after decoding. More...
std::shared_ptr< Log_event >	m_current_fde
	Owning pointer of the FDE base. More...
Format_description_log_event *	m_fde_ptr
	Non-owning pointer to FDE. More...
Default_binlog_event_allocator	m_allocator
	Allocator used to allocate event data in the reader, we use a separate object, since 'Default_binlog_event_allocator' methods do not use object state in any way. More...

Detailed Description

Implementation of the IReader_event which keeps event raw payload until decoded.

Constructor & Destructor Documentation

Cached_event_payload()

mysql::csa::Cached_event_payload::Cached_event_payload	(	const Event_payload &	payload,
		std::shared_ptr< Log_event >	fde
	)

Is constructed using payload data/metadata and associated fde.

Parameters

payload	Event payload data and metadata returned by the reader
fde	Current source's fde

Member Function Documentation

decode()

std::shared_ptr< Log_event > mysql::csa::Cached_event_payload::decode ( )

overridevirtual

Decode function, which decodes payload and returns Log event smart pointer.

Returns

Log event smart pointer

Implements mysql::csa::IReader_event.

reset()

void mysql::csa::Cached_event_payload::reset ( const Format_description_log_event *  )

overridevirtual

Resets event state.

Implements mysql::csa::IReader_event.

Member Data Documentation

m_allocator

Default_binlog_event_allocator mysql::csa::Cached_event_payload::m_allocator

private

Allocator used to allocate event data in the reader, we use a separate object, since 'Default_binlog_event_allocator' methods do not use object state in any way.

m_current_fde

std::shared_ptr<Log_event> mysql::csa::Cached_event_payload::m_current_fde

private

Owning pointer of the FDE base.

m_data

uint8_t* mysql::csa::Cached_event_payload::m_data

private

Event data, owning pointer returned by the reader (legacy design)

m_fde_ptr

Format_description_log_event* mysql::csa::Cached_event_payload::m_fde_ptr

private

Non-owning pointer to FDE.

m_length

std::size_t mysql::csa::Cached_event_payload::m_length

private

Event length.

m_verify_checksum

bool mysql::csa::Cached_event_payload::m_verify_checksum {false}

private

Information on whether to verify checksum after decoding.

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

• sql/changestreams/apply/storage/relay_log/cached_event_payload.h
• sql/changestreams/apply/storage/relay_log/cached_event_payload.cpp