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#pragma once
#include <torch/csrc/distributed/rpc/message.h>
namespace torch {
namespace distributed {
namespace rpc {
// Functor which is invoked to process an RPC message. This is an abstract class
// with some common functionality across all request handlers. Users need to
// implement this interface to perform the actual business logic.
class TORCH_API RequestCallback {
public:
// Invoke the callback.
std::shared_ptr<FutureMessage> operator()(Message& request) const;
virtual ~RequestCallback() {}
protected:
// RpcAgent implementation should invoke ``RequestCallback`` to process
// received requests. There is no restriction on the implementation's
// threading model. This function takes an rvalue reference of the Message
// object. It is expected to return the future to a response message or
// message containing an exception. Different rpc agent implementations are
// expected to ensure delivery of the response/exception based on their
// implementation specific mechanisms.
virtual std::shared_ptr<FutureMessage> processMessage(
Message& request) const = 0;
};
} // namespace rpc
} // namespace distributed
} // namespace torch
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