83 lines
2.2 KiB
C++
83 lines
2.2 KiB
C++
#pragma once
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#include <nano/lib/numbers.hpp>
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#include <nano/lib/numbers_templ.hpp>
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#include <nano/lib/utility.hpp>
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#include <nano/node/fwd.hpp>
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#include <nano/secure/common.hpp>
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#include <boost/multi_index/hashed_index.hpp>
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#include <boost/multi_index/member.hpp>
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#include <boost/multi_index/ordered_index.hpp>
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#include <boost/multi_index_container.hpp>
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#include <memory>
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#include <vector>
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namespace mi = boost::multi_index;
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namespace nano
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{
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/** Track online representatives and trend online weight */
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class online_reps final
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{
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public:
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online_reps (nano::node_config const &, nano::ledger &);
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/** Add voting account \p rep_account to the set of online representatives */
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void observe (nano::account const & rep_account);
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/** Called periodically to sample online weight */
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void sample ();
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/** Returns the trended online stake */
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nano::uint128_t trended () const;
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/** Returns the current online stake */
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nano::uint128_t online () const;
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/** Returns the quorum required for confirmation*/
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nano::uint128_t delta () const;
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/** List of online representatives, both the currently sampling ones and the ones observed in the previous sampling period */
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std::vector<nano::account> list ();
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void clear ();
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nano::container_info container_info () const;
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public:
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static unsigned constexpr online_weight_quorum = 67;
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private: // Dependencies
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nano::node_config const & config;
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nano::ledger & ledger;
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private:
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nano::uint128_t calculate_trend (nano::store::transaction &) const;
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nano::uint128_t calculate_online () const;
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private:
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struct rep_info
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{
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std::chrono::steady_clock::time_point time;
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nano::account account;
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};
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// clang-format off
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class tag_time {};
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class tag_account {};
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using ordered_reps = boost::multi_index_container<rep_info,
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mi::indexed_by<
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mi::ordered_non_unique<mi::tag<tag_time>,
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mi::member<rep_info, std::chrono::steady_clock::time_point, &rep_info::time>>,
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mi::hashed_unique<mi::tag<tag_account>,
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mi::member<rep_info, nano::account, &rep_info::account>>
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>>;
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// clang-format off
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ordered_reps reps;
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nano::uint128_t trended_m;
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nano::uint128_t online_m;
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mutable nano::mutex mutex;
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public: // Only for tests
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void force_online_weight (nano::uint128_t const & online_weight);
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};
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}
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