packages.h

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// Copyright (c) 2021-2022 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_POLICY_PACKAGES_H
#define BITCOIN_POLICY_PACKAGES_H
 
#include <consensus/consensus.h>
#include <consensus/validation.h>
#include <policy/policy.h>
#include <primitives/transaction.h>
 
#include <cstdint>
#include <vector>
 
static constexpr uint32_t MAX_PACKAGE_COUNT{25};
static constexpr uint32_t MAX_PACKAGE_SIZE{101};
static_assert(MAX_PACKAGE_SIZE * WITNESS_SCALE_FACTOR * 1000 >= MAX_STANDARD_TX_WEIGHT);
 
// If a package is submitted, it must be within the mempool's ancestor/descendant limits. Since a
// submitted package must be child-with-unconfirmed-parents (all of the transactions are an ancestor
// of the child), package limits are ultimately bounded by mempool package limits. Ensure that the
// defaults reflect this constraint.
static_assert(DEFAULT_DESCENDANT_LIMIT >= MAX_PACKAGE_COUNT);
static_assert(DEFAULT_ANCESTOR_LIMIT >= MAX_PACKAGE_COUNT);
static_assert(DEFAULT_ANCESTOR_SIZE_LIMIT_KVB >= MAX_PACKAGE_SIZE);
static_assert(DEFAULT_DESCENDANT_SIZE_LIMIT_KVB >= MAX_PACKAGE_SIZE);
 
enum class PackageValidationResult {
    PCKG_RESULT_UNSET = 0,        
    PCKG_POLICY,                  
    PCKG_TX,                      
    PCKG_MEMPOOL_ERROR,           
};
 
using Package = std::vector<CTransactionRef>;
 
class PackageValidationState : public ValidationState<PackageValidationResult> {};
 
bool CheckPackage(const Package& txns, PackageValidationState& state);
 
bool IsChildWithParents(const Package& package);
 
#endif // BITCOIN_POLICY_PACKAGES_H