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monero/src/blockchain_db/testdb.h

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Update 2019 copyright
2019-03-05 16:05:34 -05:00
// Copyright (c) 2014-2019, The Monero Project
tests: add unit tests for get_output_distribution
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//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of
// conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
// of conditions and the following disclaimer in the documentation and/or other
// materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its contributors may be
// used to endorse or promote products derived from this software without specific
// prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
#pragma once
#include <string>
#include <vector>
#include <map>
ArticMine's new block weight algorithm This curbs runaway growth while still allowing substantial spikes in block weight Original specification from ArticMine: here is the scaling proposal Define: LongTermBlockWeight Before fork: LongTermBlockWeight = BlockWeight At or after fork: LongTermBlockWeight = min(BlockWeight, 1.4*LongTermEffectiveMedianBlockWeight) Note: To avoid possible consensus issues over rounding the LongTermBlockWeight for a given block should be calculated to the nearest byte, and stored as a integer in the block itself. The stored LongTermBlockWeight is then used for future calculations of the LongTermEffectiveMedianBlockWeight and not recalculated each time. Define: LongTermEffectiveMedianBlockWeight LongTermEffectiveMedianBlockWeight = max(300000, MedianOverPrevious100000Blocks(LongTermBlockWeight)) Change Definition of EffectiveMedianBlockWeight From (current definition) EffectiveMedianBlockWeight = max(300000, MedianOverPrevious100Blocks(BlockWeight)) To (proposed definition) EffectiveMedianBlockWeight = min(max(300000, MedianOverPrevious100Blocks(BlockWeight)), 50*LongTermEffectiveMedianBlockWeight) Notes: 1) There are no other changes to the existing penalty formula, median calculation, fees etc. 2) There is the requirement to store the LongTermBlockWeight of a block unencrypted in the block itself. This is to avoid possible consensus issues over rounding and also to prevent the calculations from becoming unwieldy as we move away from the fork. 3) When the EffectiveMedianBlockWeight cap is reached it is still possible to mine blocks up to 2x the EffectiveMedianBlockWeight by paying the corresponding penalty. Note: the long term block weight is stored in the database, but not in the actual block itself, since it requires recalculating anyway for verification.
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#include "blockchain_db.h"
namespace cryptonote
{
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class BaseTestDB: public cryptonote::BlockchainDB {
public:
BaseTestDB() {}
virtual void open(const std::string& filename, const int db_flags = 0) { }
virtual void close() {}
virtual void sync() {}
virtual void safesyncmode(const bool onoff) {}
virtual void reset() {}
virtual std::vector<std::string> get_filenames() const { return std::vector<std::string>(); }
virtual bool remove_data_file(const std::string& folder) const { return true; }
virtual std::string get_db_name() const { return std::string(); }
virtual bool lock() { return true; }
virtual void unlock() { }
virtual bool batch_start(uint64_t batch_num_blocks=0, uint64_t batch_bytes=0) { return true; }
virtual void batch_stop() {}
virtual void set_batch_transactions(bool) {}
virtual void block_txn_start(bool readonly=false) {}
virtual void block_txn_stop() {}
virtual void block_txn_abort() {}
virtual void drop_hard_fork_info() {}
virtual bool block_exists(const crypto::hash& h, uint64_t *height) const { return false; }
virtual cryptonote::blobdata get_block_blob_from_height(const uint64_t& height) const { return cryptonote::t_serializable_object_to_blob(get_block_from_height(height)); }
virtual cryptonote::blobdata get_block_blob(const crypto::hash& h) const { return cryptonote::blobdata(); }
virtual bool get_tx_blob(const crypto::hash& h, cryptonote::blobdata &tx) const { return false; }
virtual bool get_pruned_tx_blob(const crypto::hash& h, cryptonote::blobdata &tx) const { return false; }
virtual bool get_prunable_tx_blob(const crypto::hash& h, cryptonote::blobdata &tx) const { return false; }
virtual bool get_prunable_tx_hash(const crypto::hash& tx_hash, crypto::hash &prunable_hash) const { return false; }
virtual uint64_t get_block_height(const crypto::hash& h) const { return 0; }
virtual cryptonote::block_header get_block_header(const crypto::hash& h) const { return cryptonote::block_header(); }
virtual uint64_t get_block_timestamp(const uint64_t& height) const { return 0; }
virtual std::vector<uint64_t> get_block_cumulative_rct_outputs(const std::vector<uint64_t> &heights) const { return {}; }
virtual uint64_t get_top_block_timestamp() const { return 0; }
virtual size_t get_block_weight(const uint64_t& height) const { return 128; }
blockchain: speed up getting N blocks weights/long term weights
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virtual std::vector<uint64_t> get_block_weights(uint64_t start_height, size_t count) const { return {}; }
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virtual cryptonote::difficulty_type get_block_cumulative_difficulty(const uint64_t& height) const { return 10; }
virtual cryptonote::difficulty_type get_block_difficulty(const uint64_t& height) const { return 0; }
virtual uint64_t get_block_already_generated_coins(const uint64_t& height) const { return 10000000000; }
ArticMine's new block weight algorithm This curbs runaway growth while still allowing substantial spikes in block weight Original specification from ArticMine: here is the scaling proposal Define: LongTermBlockWeight Before fork: LongTermBlockWeight = BlockWeight At or after fork: LongTermBlockWeight = min(BlockWeight, 1.4*LongTermEffectiveMedianBlockWeight) Note: To avoid possible consensus issues over rounding the LongTermBlockWeight for a given block should be calculated to the nearest byte, and stored as a integer in the block itself. The stored LongTermBlockWeight is then used for future calculations of the LongTermEffectiveMedianBlockWeight and not recalculated each time. Define: LongTermEffectiveMedianBlockWeight LongTermEffectiveMedianBlockWeight = max(300000, MedianOverPrevious100000Blocks(LongTermBlockWeight)) Change Definition of EffectiveMedianBlockWeight From (current definition) EffectiveMedianBlockWeight = max(300000, MedianOverPrevious100Blocks(BlockWeight)) To (proposed definition) EffectiveMedianBlockWeight = min(max(300000, MedianOverPrevious100Blocks(BlockWeight)), 50*LongTermEffectiveMedianBlockWeight) Notes: 1) There are no other changes to the existing penalty formula, median calculation, fees etc. 2) There is the requirement to store the LongTermBlockWeight of a block unencrypted in the block itself. This is to avoid possible consensus issues over rounding and also to prevent the calculations from becoming unwieldy as we move away from the fork. 3) When the EffectiveMedianBlockWeight cap is reached it is still possible to mine blocks up to 2x the EffectiveMedianBlockWeight by paying the corresponding penalty. Note: the long term block weight is stored in the database, but not in the actual block itself, since it requires recalculating anyway for verification.
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virtual uint64_t get_block_long_term_weight(const uint64_t& height) const { return 128; }
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virtual std::vector<uint64_t> get_long_term_block_weights(uint64_t start_height, size_t count) const { return {}; }
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virtual crypto::hash get_block_hash_from_height(const uint64_t& height) const { return crypto::hash(); }
virtual std::vector<cryptonote::block> get_blocks_range(const uint64_t& h1, const uint64_t& h2) const { return std::vector<cryptonote::block>(); }
virtual std::vector<crypto::hash> get_hashes_range(const uint64_t& h1, const uint64_t& h2) const { return std::vector<crypto::hash>(); }
save some database calls when getting top block hash and height
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virtual crypto::hash top_block_hash(uint64_t *block_height = NULL) const { if (block_height) *block_height = 0; return crypto::hash(); }
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virtual cryptonote::block get_top_block() const { return cryptonote::block(); }
virtual uint64_t height() const { return 1; }
virtual bool tx_exists(const crypto::hash& h) const { return false; }
virtual bool tx_exists(const crypto::hash& h, uint64_t& tx_index) const { return false; }
virtual uint64_t get_tx_unlock_time(const crypto::hash& h) const { return 0; }
virtual cryptonote::transaction get_tx(const crypto::hash& h) const { return cryptonote::transaction(); }
virtual bool get_tx(const crypto::hash& h, cryptonote::transaction &tx) const { return false; }
virtual uint64_t get_tx_count() const { return 0; }
virtual std::vector<cryptonote::transaction> get_tx_list(const std::vector<crypto::hash>& hlist) const { return std::vector<cryptonote::transaction>(); }
virtual uint64_t get_tx_block_height(const crypto::hash& h) const { return 0; }
virtual uint64_t get_num_outputs(const uint64_t& amount) const { return 1; }
virtual uint64_t get_indexing_base() const { return 0; }
blockchain_db: allow getting output keys without commitment Since the commitment has to be calculated for non rct outputs, it slows down a lot unnecessarily if we don't need it
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virtual cryptonote::output_data_t get_output_key(const uint64_t& amount, const uint64_t& index, bool include_commitmemt) const { return cryptonote::output_data_t(); }
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virtual cryptonote::tx_out_index get_output_tx_and_index_from_global(const uint64_t& index) const { return cryptonote::tx_out_index(); }
virtual cryptonote::tx_out_index get_output_tx_and_index(const uint64_t& amount, const uint64_t& index) const { return cryptonote::tx_out_index(); }
virtual void get_output_tx_and_index(const uint64_t& amount, const std::vector<uint64_t> &offsets, std::vector<cryptonote::tx_out_index> &indices) const {}
Make get_output_key method const get_output_key method is commonly used when working with txs and their key images. Because the method is not const, passing blockchain object though const& or pointers to const is not possible in this context. This is especially problematic in external projects (e.g., projects in moneroexamples) that use monero C++ api to operate on the blockchain and txs. Thus, having get_output_key method will simplify moving blockchain object around through const references and pointers to const objects.
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virtual void get_output_key(const epee::span<const uint64_t> &amounts, const std::vector<uint64_t> &offsets, std::vector<cryptonote::output_data_t> &outputs, bool allow_partial = false) const {}
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virtual bool can_thread_bulk_indices() const { return false; }
virtual std::vector<uint64_t> get_tx_output_indices(const crypto::hash& h) const { return std::vector<uint64_t>(); }
blockchain_db: speedup tx output gathering We know all the data we'll want for getblocks.bin is contiguous
2018-12-16 08:28:49 -05:00
virtual std::vector<std::vector<uint64_t>> get_tx_amount_output_indices(const uint64_t tx_index, size_t n_txes) const { return std::vector<std::vector<uint64_t>>(); }
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virtual bool has_key_image(const crypto::key_image& img) const { return false; }
virtual void remove_block() { }
Avoid repeated (de)serialization when syncing
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virtual uint64_t add_transaction_data(const crypto::hash& blk_hash, const std::pair<cryptonote::transaction, cryptonote::blobdata>& tx, const crypto::hash& tx_hash, const crypto::hash& tx_prunable_hash) {return 0;}
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virtual void remove_transaction_data(const crypto::hash& tx_hash, const cryptonote::transaction& tx) {}
virtual uint64_t add_output(const crypto::hash& tx_hash, const cryptonote::tx_out& tx_output, const uint64_t& local_index, const uint64_t unlock_time, const rct::key *commitment) {return 0;}
virtual void add_tx_amount_output_indices(const uint64_t tx_index, const std::vector<uint64_t>& amount_output_indices) {}
virtual void add_spent_key(const crypto::key_image& k_image) {}
virtual void remove_spent_key(const crypto::key_image& k_image) {}
virtual bool for_all_key_images(std::function<bool(const crypto::key_image&)>) const { return true; }
virtual bool for_blocks_range(const uint64_t&, const uint64_t&, std::function<bool(uint64_t, const crypto::hash&, const cryptonote::block&)>) const { return true; }
virtual bool for_all_transactions(std::function<bool(const crypto::hash&, const cryptonote::transaction&)>, bool pruned) const { return true; }
virtual bool for_all_outputs(std::function<bool(uint64_t amount, const crypto::hash &tx_hash, uint64_t height, size_t tx_idx)> f) const { return true; }
virtual bool for_all_outputs(uint64_t amount, const std::function<bool(uint64_t height)> &f) const { return true; }
virtual bool is_read_only() const { return false; }
virtual std::map<uint64_t, std::tuple<uint64_t, uint64_t, uint64_t>> get_output_histogram(const std::vector<uint64_t> &amounts, bool unlocked, uint64_t recent_cutoff, uint64_t min_count) const { return std::map<uint64_t, std::tuple<uint64_t, uint64_t, uint64_t>>(); }
virtual bool get_output_distribution(uint64_t amount, uint64_t from_height, uint64_t to_height, std::vector<uint64_t> &distribution, uint64_t &base) const { return false; }
virtual void add_txpool_tx(const crypto::hash &txid, const cryptonote::blobdata &blob, const cryptonote::txpool_tx_meta_t& details) {}
virtual void update_txpool_tx(const crypto::hash &txid, const cryptonote::txpool_tx_meta_t& details) {}
virtual uint64_t get_txpool_tx_count(bool include_unrelayed_txes = true) const { return 0; }
virtual bool txpool_has_tx(const crypto::hash &txid) const { return false; }
virtual void remove_txpool_tx(const crypto::hash& txid) {}
virtual bool get_txpool_tx_meta(const crypto::hash& txid, cryptonote::txpool_tx_meta_t &meta) const { return false; }
virtual bool get_txpool_tx_blob(const crypto::hash& txid, cryptonote::blobdata &bd) const { return false; }
virtual uint64_t get_database_size() const { return 0; }
virtual cryptonote::blobdata get_txpool_tx_blob(const crypto::hash& txid) const { return ""; }
virtual bool for_all_txpool_txes(std::function<bool(const crypto::hash&, const cryptonote::txpool_tx_meta_t&, const cryptonote::blobdata*)>, bool include_blob = false, bool include_unrelayed_txes = false) const { return false; }
virtual void add_block( const cryptonote::block& blk
, size_t block_weight
ArticMine's new block weight algorithm This curbs runaway growth while still allowing substantial spikes in block weight Original specification from ArticMine: here is the scaling proposal Define: LongTermBlockWeight Before fork: LongTermBlockWeight = BlockWeight At or after fork: LongTermBlockWeight = min(BlockWeight, 1.4*LongTermEffectiveMedianBlockWeight) Note: To avoid possible consensus issues over rounding the LongTermBlockWeight for a given block should be calculated to the nearest byte, and stored as a integer in the block itself. The stored LongTermBlockWeight is then used for future calculations of the LongTermEffectiveMedianBlockWeight and not recalculated each time. Define: LongTermEffectiveMedianBlockWeight LongTermEffectiveMedianBlockWeight = max(300000, MedianOverPrevious100000Blocks(LongTermBlockWeight)) Change Definition of EffectiveMedianBlockWeight From (current definition) EffectiveMedianBlockWeight = max(300000, MedianOverPrevious100Blocks(BlockWeight)) To (proposed definition) EffectiveMedianBlockWeight = min(max(300000, MedianOverPrevious100Blocks(BlockWeight)), 50*LongTermEffectiveMedianBlockWeight) Notes: 1) There are no other changes to the existing penalty formula, median calculation, fees etc. 2) There is the requirement to store the LongTermBlockWeight of a block unencrypted in the block itself. This is to avoid possible consensus issues over rounding and also to prevent the calculations from becoming unwieldy as we move away from the fork. 3) When the EffectiveMedianBlockWeight cap is reached it is still possible to mine blocks up to 2x the EffectiveMedianBlockWeight by paying the corresponding penalty. Note: the long term block weight is stored in the database, but not in the actual block itself, since it requires recalculating anyway for verification.
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, uint64_t long_term_block_weight
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, const cryptonote::difficulty_type& cumulative_difficulty
, const uint64_t& coins_generated
, uint64_t num_rct_outs
, const crypto::hash& blk_hash
) { }
virtual cryptonote::block get_block_from_height(const uint64_t& height) const { return cryptonote::block(); }
virtual void set_hard_fork_version(uint64_t height, uint8_t version) {}
virtual uint8_t get_hard_fork_version(uint64_t height) const { return 0; }
virtual void check_hard_fork_info() {}
virtual uint32_t get_blockchain_pruning_seed() const { return 0; }
virtual bool prune_blockchain(uint32_t pruning_seed = 0) { return true; }
virtual bool update_pruning() { return true; }
virtual bool check_pruning() { return true; }
Outputs where all amounts are known spent can now be pruned Only for pre rct for obvious reasons. Note: DO NOT use a known spent list which includes outputs which are not known spent. If the list includes any output that's just strongly thought to be spent, but not provably so, you risk finding yourself unable to sync past the point where that output is spent. I estimate only 200 MB saved on current mainnet though, unless the new blackballing rule unearths a good amount of large-amount-set extra spent outs.
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virtual void prune_outputs(uint64_t amount) {}
tests: add unit tests for get_output_distribution
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};
ArticMine's new block weight algorithm This curbs runaway growth while still allowing substantial spikes in block weight Original specification from ArticMine: here is the scaling proposal Define: LongTermBlockWeight Before fork: LongTermBlockWeight = BlockWeight At or after fork: LongTermBlockWeight = min(BlockWeight, 1.4*LongTermEffectiveMedianBlockWeight) Note: To avoid possible consensus issues over rounding the LongTermBlockWeight for a given block should be calculated to the nearest byte, and stored as a integer in the block itself. The stored LongTermBlockWeight is then used for future calculations of the LongTermEffectiveMedianBlockWeight and not recalculated each time. Define: LongTermEffectiveMedianBlockWeight LongTermEffectiveMedianBlockWeight = max(300000, MedianOverPrevious100000Blocks(LongTermBlockWeight)) Change Definition of EffectiveMedianBlockWeight From (current definition) EffectiveMedianBlockWeight = max(300000, MedianOverPrevious100Blocks(BlockWeight)) To (proposed definition) EffectiveMedianBlockWeight = min(max(300000, MedianOverPrevious100Blocks(BlockWeight)), 50*LongTermEffectiveMedianBlockWeight) Notes: 1) There are no other changes to the existing penalty formula, median calculation, fees etc. 2) There is the requirement to store the LongTermBlockWeight of a block unencrypted in the block itself. This is to avoid possible consensus issues over rounding and also to prevent the calculations from becoming unwieldy as we move away from the fork. 3) When the EffectiveMedianBlockWeight cap is reached it is still possible to mine blocks up to 2x the EffectiveMedianBlockWeight by paying the corresponding penalty. Note: the long term block weight is stored in the database, but not in the actual block itself, since it requires recalculating anyway for verification.
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}
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