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// Copyright (c) 2019-2020 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#ifndef BITCOIN_NODE_CONTEXT_H
#define BITCOIN_NODE_CONTEXT_H
#include <cassert>
#include <functional>
#include <memory>
#include <vector>
class ArgsManager;
class BanMan;
class AddrMan;
class CBlockPolicyEstimator;
class CConnman;
class CScheduler;
class CTxMemPool;
class ChainstateManager;
class PeerManager;
namespace interfaces {
class Chain;
class ChainClient;
class Init;
class WalletClient;
} // namespace interfaces
//! NodeContext struct containing references to chain state and connection
//! state.
//!
//! This is used by init, rpc, and test code to pass object references around
//! without needing to declare the same variables and parameters repeatedly, or
//! to use globals. More variables could be added to this struct (particularly
//! references to validation objects) to eliminate use of globals
//! and make code more modular and testable. The struct isn't intended to have
//! any member functions. It should just be a collection of references that can
//! be used without pulling in unwanted dependencies or functionality.
struct NodeContext {
//! Init interface for initializing current process and connecting to other processes.
interfaces::Init* init{nullptr};
std::unique_ptr<AddrMan> addrman;
std::unique_ptr<CConnman> connman;
std::unique_ptr<CTxMemPool> mempool;
std::unique_ptr<CBlockPolicyEstimator> fee_estimator;
std::unique_ptr<PeerManager> peerman;
std::unique_ptr<ChainstateManager> chainman;
std::unique_ptr<BanMan> banman;
ArgsManager* args{nullptr}; // Currently a raw pointer because the memory is not managed by this struct
std::unique_ptr<interfaces::Chain> chain;
//! List of all chain clients (wallet processes or other client) connected to node.
std::vector<std::unique_ptr<interfaces::ChainClient>> chain_clients;
//! Reference to chain client that should used to load or create wallets
//! opened by the gui.
interfaces::WalletClient* wallet_client{nullptr};
std::unique_ptr<CScheduler> scheduler;
std::function<void()> rpc_interruption_point = [] {};
//! Declare default constructor and destructor that are not inline, so code
//! instantiating the NodeContext struct doesn't need to #include class
//! definitions for all the unique_ptr members.
NodeContext();
~NodeContext();
};
#endif // BITCOIN_NODE_CONTEXT_H
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