d7/def/NullSink_8hpp_source.html

// SPDX-FileCopyrightText: 2026 Vincent Leroy

// SPDX-License-Identifier: MIT

//

// This file is part of dfx.

//

// Licensed under the MIT License. See the LICENSE file in the project root

// for full license information.


#pragma once


// Project includes

#include <dfx-core/Node.hpp>


namespace dfx::Node

{


class NullSink : public Core::Node

{

    DFX_NODE("NullSink")


public:

    NullSink(Id id, std::string name);


protected:

    void initializeImpl(nlohmann::json config) override;


    void handleMessage(Core::InputPort const &, Core::MessagePtr) override {}

};


} // !namespace dfx::Node

Node.hpp
Base class for all runtime-executed nodes in a dfx dataflow graph.

DFX_NODE
#define DFX_NODE(typeName)
Convenience macro to declare the node type string and metadata/schema hooks.
Definition Node.hpp:569

dfx::Core::InputPort
Incoming message endpoint attached to a node.
Definition InputPort.hpp:57

dfx::Core::Node
Abstract base class for all nodes in the dfx runtime.
Definition Node.hpp:94

dfx::Core::Node::Id
uint32_t Id
Node identifier type (unique and stable within a graph instance).
Definition Node.hpp:116

dfx::Core::Node::config
nlohmann::json const & config() const noexcept
Get the node configuration.
Definition Node.hpp:141

dfx::Core::Node::name
std::string const & name() const noexcept
Get the node name.
Definition Node.hpp:137

dfx::Node::NullSink::initializeImpl
void initializeImpl(nlohmann::json config) override
Called by initialize; derived nodes must parse config here.

dfx::Node::NullSink::handleMessage
void handleMessage(Core::InputPort const &, Core::MessagePtr) override
Handle an incoming message on an input port.
Definition NullSink.hpp:26

dfx::Core::MessagePtr
std::unique_ptr< Message > MessagePtr
Unique ownership handle for messages.
Definition Message.hpp:27

dfx::Node
Definition MimeTypeRouter.hpp:18