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// Copyright (c) 2021 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_INTERFACES_INIT_H
#define BITCOIN_INTERFACES_INIT_H
#include <interfaces/chain.h>
#include <interfaces/echo.h>
#include <interfaces/node.h>
#include <interfaces/wallet.h>
#include <memory>
namespace node {
struct NodeContext;
} // namespace node
namespace interfaces {
class Ipc;
//! Initial interface created when a process is first started, and used to give
//! and get access to other interfaces (Node, Chain, Wallet, etc).
//!
//! There is a different Init interface implementation for each process
//! (bitcoin-gui, bitcoin-node, bitcoin-wallet, bitcoind, bitcoin-qt) and each
//! implementation can implement the make methods for interfaces it supports.
//! The default make methods all return null.
class Init
{
public:
virtual ~Init() = default;
virtual std::unique_ptr<Node> makeNode() { return nullptr; }
virtual std::unique_ptr<Chain> makeChain() { return nullptr; }
virtual std::unique_ptr<WalletLoader> makeWalletLoader(Chain& chain) { return nullptr; }
virtual std::unique_ptr<Echo> makeEcho() { return nullptr; }
virtual Ipc* ipc() { return nullptr; }
};
//! Return implementation of Init interface for the node process. If the argv
//! indicates that this is a child process spawned to handle requests from a
//! parent process, this blocks and handles requests, then returns null and a
//! status code to exit with. If this returns non-null, the caller can start up
//! normally and use the Init object to spawn and connect to other processes
//! while it is running.
std::unique_ptr<Init> MakeNodeInit(node::NodeContext& node, int argc, char* argv[], int& exit_status);
//! Return implementation of Init interface for the wallet process.
std::unique_ptr<Init> MakeWalletInit(int argc, char* argv[], int& exit_status);
//! Return implementation of Init interface for the gui process.
std::unique_ptr<Init> MakeGuiInit(int argc, char* argv[]);
} // namespace interfaces
#endif // BITCOIN_INTERFACES_INIT_H
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