irsol::server::handlers::LambdaHandler< T, > Class Template Reference

Handler class that delegates protocol message processing to a lambda or callable. More...

#include <lambda_handler.hpp>

Inheritance diagram for irsol::server::handlers::LambdaHandler< T, >:

Public Types
using	lambda_function_t = std::function< std::vector< out_message_t >(std::shared_ptr< Context >, std::shared_ptr< irsol::server::ClientSession >, T &&)>

Public Member Functions
	LambdaHandler (std::shared_ptr< irsol::server::handlers::Context > ctx, lambda_function_t callback)
	Constructs a LambdaHandler with the given context and callback.
Public Member Functions inherited from irsol::server::handlers::internal::HandlerBase< T, >
virtual std::vector< out_message_t >	operator() (const irsol::types::client_id_t &clientId, T &&message)
	Invokes the handler for a given client and message.

Protected Member Functions
std::vector< out_message_t >	process (std::shared_ptr< irsol::server::ClientSession > session, T &&message) final override
	Processes the protocol message by invoking the stored lambda/callable.
Protected Member Functions inherited from irsol::server::handlers::internal::HandlerBase< T, >
	HandlerBase (std::shared_ptr< Context > ctx)
	Constructs the handler base.

Private Attributes
lambda_function_t	m_callback
	The lambda or callable to invoke for each message.

Additional Inherited Members
Protected Attributes inherited from irsol::server::handlers::internal::HandlerBase< T, >
std::shared_ptr< Context >	ctx
	Handler context (provides access to app and utilities).

Detailed Description

template<typename T, std::enable_if_t< irsol::traits::is_type_in_variant< T, irsol::protocol::InMessage >::value, int > = 0>
class irsol::server::handlers::LambdaHandler< T, >

Handler class that delegates protocol message processing to a lambda or callable.

Template Parameters

T	Protocol message type (Assignment, Inquiry, Command).

LambdaHandler enables protocol message handlers to be implemented as lambda functions or other callable objects, rather than requiring a dedicated handler class.

The lambda receives the handler context, the client session pointer, and the protocol message.

Definition at line 62 of file lambda_handler.hpp.

Member Typedef Documentation

lambda_function_t

template<typename T , std::enable_if_t< irsol::traits::is_type_in_variant< T, irsol::protocol::InMessage >::value, int > = 0>

using irsol::server::handlers::LambdaHandler< T, >::lambda_function_t = std::function<std::vector< out_message_t>(std::shared_ptr<Context>, std::shared_ptr<irsol::server::ClientSession>, T&&)>

Definition at line 65 of file lambda_handler.hpp.

Constructor & Destructor Documentation

LambdaHandler()

template<typename T , std::enable_if_t< irsol::traits::is_type_in_variant< T, irsol::protocol::InMessage >::value, int > = 0>

irsol::server::handlers::LambdaHandler< T, >::LambdaHandler ( std::shared_ptr< irsol::server::handlers::Context >  ctx, lambda_function_t  callback  )

inline

Constructs a LambdaHandler with the given context and callback.

Parameters

ctx	Handler context.
callback	Lambda or callable to invoke for each message.

Definition at line 73 of file lambda_handler.hpp.

    : internal::HandlerBase<T>(ctx), m_callback(callback)
  {}

Member Function Documentation

process()

template<typename T , std::enable_if_t< irsol::traits::is_type_in_variant< T, irsol::protocol::InMessage >::value, int > = 0>

std::vector< out_message_t > irsol::server::handlers::LambdaHandler< T, >::process ( std::shared_ptr< irsol::server::ClientSession >  session, T &&  message  )

inlinefinaloverrideprotectedvirtual

Processes the protocol message by invoking the stored lambda/callable.

Parameters

session	The client session.
message	The protocol message.

Returns

Vector of outbound messages (success or error).

Implements irsol::server::handlers::internal::HandlerBase< T, >.

Definition at line 84 of file lambda_handler.hpp.

  {
    return m_callback(this->ctx, session, std::move(message));
  }

Member Data Documentation

m_callback

template<typename T , std::enable_if_t< irsol::traits::is_type_in_variant< T, irsol::protocol::InMessage >::value, int > = 0>

lambda_function_t irsol::server::handlers::LambdaHandler< T, >::m_callback

private

The lambda or callable to invoke for each message.

Definition at line 93 of file lambda_handler.hpp.

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

• src/irsol/include/irsol/server/handlers/lambda_handler.hpp