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db: store cumulative rct output distribution in the db for speed

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This gets rid of the temporary precalc cache.

Also make the RPC able to send data back in binary or JSON,
since there can be a lot of data

This bumps the LMDB database format to v3, with migration.
This commit is contained in:
moneromooo-monero 2018-05-22 14:46:30 +01:00
parent eed4dba880
commit 45e419bd5c
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GPG key ID: 686F07454D6CEFC3
9 changed files with 315 additions and 177 deletions
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39
src/cryptonote_core/blockchain.cpp
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@ -1985,14 +1985,14 @@ void Blockchain::get_output_key_mask_unlocked(const uint64_t& amount, const uint
//------------------------------------------------------------------
bool Blockchain::get_output_distribution(uint64_t amount, uint64_t from_height, uint64_t to_height, uint64_t &start_height, std::vector<uint64_t> &distribution, uint64_t &base) const
{
// rct outputs don't exist before v3
// rct outputs don't exist before v4
if (amount == 0)
{
switch (m_nettype)
{
case STAGENET: start_height = stagenet_hard_forks[2].height; break;
case TESTNET: start_height = testnet_hard_forks[2].height; break;
case MAINNET: start_height = mainnet_hard_forks[2].height; break;
case STAGENET: start_height = stagenet_hard_forks[3].height; break;
case TESTNET: start_height = testnet_hard_forks[3].height; break;
case MAINNET: start_height = mainnet_hard_forks[3].height; break;
default: return false;
}
}
@ -2000,11 +2000,40 @@ bool Blockchain::get_output_distribution(uint64_t amount, uint64_t from_height,
start_height = 0;
base = 0;
if (to_height > 0 && to_height < from_height)
return false;
const uint64_t real_start_height = start_height;
if (from_height > start_height)
start_height = from_height;
return m_db->get_output_distribution(amount, start_height, to_height, distribution, base);
distribution.clear();
uint64_t db_height = m_db->height();
if (db_height == 0)
return false;
if (to_height == 0)
to_height = db_height - 1;
if (start_height >= db_height || to_height >= db_height)
return false;
if (amount == 0)
{
std::vector<uint64_t> heights;
heights.reserve(to_height + 1 - start_height);
uint64_t real_start_height = start_height > 0 ? start_height-1 : start_height;
for (uint64_t h = real_start_height; h <= to_height; ++h)
heights.push_back(h);
distribution = m_db->get_block_cumulative_rct_outputs(heights);
if (start_height > 0)
{
base = distribution[0];
distribution.erase(distribution.begin());
}
return true;
}
else
{
return m_db->get_output_distribution(amount, start_height, to_height, distribution, base);
}
}
//------------------------------------------------------------------
// This function takes a list of block hashes from another node