High performance C++ framework for concurrent servers
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seastar::rpc::tuple< T > Class Template Reference

Detailed Description

template<typename... T>
class seastar::rpc::tuple< T >

Used to return multiple values in rpc without variadic futures

If you wish to return multiple values from an rpc procedure, use a signature future<rpc::tuple<return type list> (argument list)>>. This will be marshalled by rpc, so you do not need to have your Serializer serialize/deserialize this tuple type. The serialization format is compatible with the deprecated variadic future support, and is compatible with adding new return types in a backwards compatible way provided new parameters are appended only, and wrapped with rpc::optional: future<rpc::tuple<existing return type list, rpc::optional<new_return_type>>> (argument list)

You may also use another tuple type, such as std::tuple. In this case, your Serializer type must recognize your tuple type and provide serialization and deserialization for it.

#include <seastar/rpc/rpc_types.hh>

Inheritance diagram for seastar::rpc::tuple< T >:

Public Member Functions

 tuple (std::tuple< T... > &&x)

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