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// Copyright (c) 2024 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_MINING_H
#define BITCOIN_INTERFACES_MINING_H
#include <node/types.h>
#include <uint256.h>
#include <memory>
#include <optional>
namespace node {
struct CBlockTemplate;
struct NodeContext;
} // namespace node
class BlockValidationState;
class CBlock;
class CScript;
namespace interfaces {
//! Interface giving clients (RPC, Stratum v2 Template Provider in the future)
//! ability to create block templates.
class Mining
{
public:
virtual ~Mining() = default;
//! If this chain is exclusively used for testing
virtual bool isTestChain() = 0;
//! Returns whether IBD is still in progress.
virtual bool isInitialBlockDownload() = 0;
//! Returns the hash for the tip of this chain
virtual std::optional<uint256> getTipHash() = 0;
/**
* Construct a new block template
*
* @param[in] script_pub_key the coinbase output
* @param[in] options options for creating the block
* @returns a block template
*/
virtual std::unique_ptr<node::CBlockTemplate> createNewBlock(const CScript& script_pub_key, const node::BlockCreateOptions& options={}) = 0;
/**
* Processes new block. A valid new block is automatically relayed to peers.
*
* @param[in] block The block we want to process.
* @param[out] new_block A boolean which is set to indicate if the block was first received via this call
* @returns If the block was processed, independently of block validity
*/
virtual bool processNewBlock(const std::shared_ptr<const CBlock>& block, bool* new_block) = 0;
//! Return the number of transaction updates in the mempool,
//! used to decide whether to make a new block template.
virtual unsigned int getTransactionsUpdated() = 0;
/**
* Check a block is completely valid from start to finish.
* Only works on top of our current best block.
* Does not check proof-of-work.
*
* @param[in] block the block to validate
* @param[in] check_merkle_root call CheckMerkleRoot()
* @param[out] state details of why a block failed to validate
* @returns false if it does not build on the current tip, or any of the checks fail
*/
virtual bool testBlockValidity(const CBlock& block, bool check_merkle_root, BlockValidationState& state) = 0;
//! Get internal node context. Useful for RPC and testing,
//! but not accessible across processes.
virtual node::NodeContext* context() { return nullptr; }
};
//! Return implementation of Mining interface.
std::unique_ptr<Mining> MakeMining(node::NodeContext& node);
} // namespace interfaces
#endif // BITCOIN_INTERFACES_MINING_H
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