ugrpc::server::middlewares::baggage::Middleware Class Reference

Detailed Description

Definition at line 12 of file middleware.hpp.

Inheritance diagram for ugrpc::server::middlewares::baggage::Middleware:

Public Member Functions
void	OnCallStart (MiddlewareCallContext &context) const override
	This hook is invoked once per Call (RPC), after the message metadata is received, but before the handler function is called.
virtual void	PostRecvMessage (MiddlewareCallContext &context, google::protobuf::Message &request) const
	The function is invoked after each received message.
virtual void	PreSendMessage (MiddlewareCallContext &context, google::protobuf::Message &response) const
	The function is invoked before each sended message.
virtual void	OnCallFinish (MiddlewareCallContext &context, const grpc::Status &status) const
	This hook is invoked once per Call (RPC), after the handler function returns, but before the message is sent to the upstream client.

Static Public Attributes
static constexpr std::string_view	kName = "grpc-server-baggage"
	The default name of ugrpc::server::middlewares::baggage::Component.
static const auto	kDependency = ::middlewares::MiddlewareDependencyBuilder()
	dependency of this middleware

Member Function Documentation

OnCallFinish()

virtual void ugrpc::server::MiddlewareBase::OnCallFinish ( MiddlewareCallContext &  context, const grpc::Status &  status  ) const

virtualinherited

This hook is invoked once per Call (RPC), after the handler function returns, but before the message is sent to the upstream client.

All OnCallStart invoked in the reverse order relatively OnCallFinish. You can change grpc status and it will apply for a rpc call.

Warning

If Handler (grpc method) returns !ok status, OnCallFinish won't be called.

Reimplemented in ugrpc::server::middlewares::deadline_propagation::Middleware.

OnCallStart()

void ugrpc::server::middlewares::baggage::Middleware::OnCallStart ( MiddlewareCallContext &  context ) const

overridevirtual

This hook is invoked once per Call (RPC), after the message metadata is received, but before the handler function is called.

If all OnCallStart succeeded => OnCallFinish will invoked after a success method call.

Reimplemented from ugrpc::server::MiddlewareBase.

PostRecvMessage()

virtual void ugrpc::server::MiddlewareBase::PostRecvMessage ( MiddlewareCallContext &  context, google::protobuf::Message &  request  ) const

virtualinherited

The function is invoked after each received message.

PostRecvMessage is called:

• unary: exactly once per Call (RPC)
• stream: 0, 1 or more times

Reimplemented in grpc_protovalidate::server::Middleware.

PreSendMessage()

virtual void ugrpc::server::MiddlewareBase::PreSendMessage ( MiddlewareCallContext &  context, google::protobuf::Message &  response  ) const

virtualinherited

The function is invoked before each sended message.

PreSendMessage is called:

• unary: 0 or 1 per Call (RPC), depending on whether the RPC returns a response or a failed status
• stream: once per response message, that is, 0, 1, more times per Call (RPC).

Member Data Documentation

kDependency

const auto ugrpc::server::middlewares::baggage::Middleware::kDependency = ::middlewares::MiddlewareDependencyBuilder()

inlinestatic

dependency of this middleware

Definition at line 19 of file middleware.hpp.

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

• userver/ugrpc/server/middlewares/baggage/middleware.hpp