CommandProcessor Class Reference

#include <classic_command.h>

Inheritance diagram for CommandProcessor:

Public Types
enum class	Stage { IsAuthed , WaitBoth , Command , Done }
Public Types inherited from BasicProcessor
enum class	Result {   Again , RecvFromClient , SendToClient , RecvFromServer ,   RecvFromBoth , SendToServer , SendableToServer , Suspend ,   Done , Void }

Public Member Functions
stdx::expected< Result, std::error_code >	process () override
void	stage (Stage stage)
Stage	stage () const
Public Member Functions inherited from Processor
	BasicProcessor (MysqlRoutingClassicConnectionBase *conn)
Public Member Functions inherited from BasicProcessor
	BasicProcessor (MysqlRoutingClassicConnectionBase *conn)
virtual	~BasicProcessor ()=default
const MysqlRoutingClassicConnectionBase *	connection () const
MysqlRoutingClassicConnectionBase *	connection ()

Private Member Functions
stdx::expected< Result, std::error_code >	is_authed ()
stdx::expected< Result, std::error_code >	wait_both ()
	wait for an read-event from client and server at the same time. More...
stdx::expected< Result, std::error_code >	command ()
void	client_idle_timeout ()

Private Attributes
Stage	stage_ {Stage::IsAuthed}
stdx::expected< AwaitClientOrServerProcessor::AwaitResult, std::error_code >	wait_both_result_ {}

Additional Inherited Members
Protected Member Functions inherited from ForwardingProcessor
stdx::expected< Result, std::error_code >	forward_server_to_client (bool noflush=false)
	forward the current packet from the server-side to the client-side. More...
stdx::expected< Result, std::error_code >	forward_client_to_server (bool noflush=false)
	forward the current packet from the client-side to the server-side. More...
stdx::expected< bool, std::error_code >	pool_server_connection ()
	move the server connection to the pool. More...
stdx::expected< Processor::Result, std::error_code >	socket_reconnect_start ()
	reconnect a socket. More...
stdx::expected< Processor::Result, std::error_code >	mysql_reconnect_start ()
	reconnect a mysql classic connection. More...
stdx::expected< Result, std::error_code >	recv_server_failed_and_check_client_socket (std::error_code ec)
	handle error-code of a failed receive() from the server-socket and check the status of the client socket. More...
stdx::expected< Processor::Result, std::error_code >	reconnect_send_error_msg (Channel *src_channel, ClassicProtocolState *src_protocol)
	send a Error msg based on the reconnect_error(). More...
void	reconnect_error (classic_protocol::message::server::Error err)
	set the reconnect error. More...
classic_protocol::message::server::Error	reconnect_error () const
	get the reconnect error. More...
Protected Member Functions inherited from Processor
stdx::expected< Result, std::error_code >	send_server_failed (std::error_code ec)
stdx::expected< Result, std::error_code >	recv_server_failed (std::error_code ec)
stdx::expected< Result, std::error_code >	send_client_failed (std::error_code ec)
stdx::expected< Result, std::error_code >	recv_client_failed (std::error_code ec)
stdx::expected< Result, std::error_code >	server_socket_failed (std::error_code ec)
stdx::expected< Result, std::error_code >	client_socket_failed (std::error_code ec)
stdx::expected< void, std::error_code >	discard_current_msg (Channel *src_channel, ClassicProtocolState *src_protocol)
	discard to current message. More...
void	trace (Tracer::Event e)
Tracer &	tracer ()
Static Protected Member Functions inherited from Processor
static void	log_fatal_error_code (const char *msg, std::error_code ec)
	log a message with error-code as error. More...

Member Enumeration Documentation

Stage

enum class CommandProcessor::Stage

strong

Enumerator
IsAuthed
WaitBoth
Command
Done

Member Function Documentation

client_idle_timeout()

void CommandProcessor::client_idle_timeout ( )

private

command()

stdx::expected< Processor::Result, std::error_code > CommandProcessor::command ( )

private

is_authed()

stdx::expected< Processor::Result, std::error_code > CommandProcessor::is_authed ( )

private

process()

stdx::expected< Processor::Result, std::error_code > CommandProcessor::process ( )

overridevirtual

Implements BasicProcessor.

stage() [1/2]

Stage CommandProcessor::stage ( ) const

inline

stage() [2/2]

void CommandProcessor::stage ( Stage  stage )

inline

wait_both()

stdx::expected< Processor::Result, std::error_code > CommandProcessor::wait_both ( )

private

wait for an read-event from client and server at the same time.

two async-reads have been started, which both will call wait_both(). Only one of the two should continue.

To ensure that event handlers are properly synchronized:

• the first returning event, cancels the other waiter and leaves without "returning" (Void)
• the cancelled side, continues with executing.

Member Data Documentation

stage_

Stage CommandProcessor::stage_ {Stage::IsAuthed}

private

wait_both_result_

stdx::expected<AwaitClientOrServerProcessor::AwaitResult, std::error_code> CommandProcessor::wait_both_result_ {}

private

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

• router/src/routing/src/classic_command.h
• router/src/routing/src/classic_command.cc