ugrpc::client::OutputStream< Request, Response > Class Template Reference

#include <userver/ugrpc/client/rpc.hpp>

Detailed Description

template<typename Request, typename Response>
class ugrpc::client::OutputStream< Request, Response >

Controls a request stream -> single response RPC.

This class is not thread-safe except for GetContext.

The RPC is cancelled on destruction unless Finish has been called. In that case the connection is not closed (it will be reused for new RPCs), and the server receives RpcInterruptedError immediately.

If any method throws, further methods must not be called on the same stream, except for GetContext.

Definition at line 265 of file rpc.hpp.

Inheritance diagram for ugrpc::client::OutputStream< Request, Response >:

Public Member Functions
bool	Write (const Request &request)
	Write the next outgoing message.
void	WriteAndCheck (const Request &request)
	Write the next outgoing message and check result.
Response	Finish ()
	Complete the RPC successfully.
	OutputStream (OutputStream &&) noexcept=default
OutputStream &	operator= (OutputStream &&) noexcept=default
grpc::ClientContext &	GetContext ()
std::string_view	GetClientName () const
std::string_view	GetCallName () const
tracing::Span &	GetSpan ()

Protected Member Functions
impl::RpcData &	GetData ()

Member Function Documentation

Finish()

template<typename Request , typename Response >

Response ugrpc::client::OutputStream< Request, Response >::Finish

(

)

Complete the RPC successfully.

Should be called once all the data is written. The server will then send a single Response.

Finish should not be called multiple times.

The connection is not closed, it will be reused for new RPCs.

Returns

the single Response received after finishing the writes

Exceptions

ugrpc::client::RpcError	on an RPC error
ugrpc::client::RpcCancelledError	on task cancellation

Definition at line 603 of file rpc.hpp.

GetCallName()

std::string_view ugrpc::client::CallAnyBase::GetCallName ( ) const

inherited

Returns

RPC name

GetClientName()

std::string_view ugrpc::client::CallAnyBase::GetClientName ( ) const

inherited

Returns

client name

GetContext()

grpc::ClientContext & ugrpc::client::CallAnyBase::GetContext ( )

inherited

Returns

the ClientContext used for this RPC

GetSpan()

tracing::Span & ugrpc::client::CallAnyBase::GetSpan ( )

inherited

Returns

RPC span

Write()

template<typename Request , typename Response >

bool ugrpc::client::OutputStream< Request, Response >::Write

(

const Request &

request

)

Write the next outgoing message.

Write doesn't store any references to request, so it can be deallocated right after the call.

Parameters

request

the next message to write

Returns

true if the data is going to the wire; false if the write operation failed (including due to task cancellation), in which case no more writes will be accepted, and the error details can be fetched from Finish

Definition at line 578 of file rpc.hpp.

WriteAndCheck()

template<typename Request , typename Response >

void ugrpc::client::OutputStream< Request, Response >::WriteAndCheck

(

const Request &

request

)

Write the next outgoing message and check result.

WriteAndCheck doesn't store any references to request, so it can be deallocated right after the call.

WriteAndCheck verifies result of the write and generates exception in case of issues.

Parameters

request

the next message to write

Exceptions

ugrpc::client::RpcError	on an RPC error
ugrpc::client::RpcCancelledError	on task cancellation

Definition at line 588 of file rpc.hpp.

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

• userver/ugrpc/client/rpc.hpp