-
Notifications
You must be signed in to change notification settings - Fork 338
/
db_update.cpp
271 lines (238 loc) · 11.7 KB
/
db_update.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
/*
* Copyright (c) 2015, Cryptonomex, Inc.
* All rights reserved.
*
* This source code is provided for evaluation in private test networks only, until September 8, 2015. After this date, this license expires and
* the code may not be used, modified or distributed for any purpose. Redistribution and use in source and binary forms, with or without modification,
* are permitted until September 8, 2015, provided that the following conditions are met:
*
* 1. The code and/or derivative works are used only for private test networks consisting of no more than 10 P2P nodes.
*
* 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.
*/
#include <graphene/chain/database.hpp>
#include <graphene/chain/asset_object.hpp>
#include <graphene/chain/global_property_object.hpp>
#include <graphene/chain/proposal_object.hpp>
#include <graphene/chain/transaction_object.hpp>
#include <graphene/chain/market_evaluator.hpp>
#include <graphene/chain/withdraw_permission_object.hpp>
#include <graphene/chain/witness_object.hpp>
#include <graphene/chain/protocol/fee_schedule.hpp>
#include <fc/uint128.hpp>
namespace graphene { namespace chain {
void database::update_global_dynamic_data( const signed_block& b )
{
const dynamic_global_property_object& _dgp =
dynamic_global_property_id_type(0)(*this);
const auto& global_props = get_global_properties();
auto delta_time = b.timestamp - _dgp.time;
auto missed_blocks = (delta_time.to_seconds() / global_props.parameters.block_interval) - 1;
if( _dgp.head_block_number == 0 )
missed_blocks = 0;
// dynamic global properties updating
modify( _dgp, [&]( dynamic_global_property_object& dgp ){
secret_hash_type::encoder enc;
fc::raw::pack( enc, dgp.random );
fc::raw::pack( enc, b.previous_secret );
dgp.random = enc.result();
if( missed_blocks )
dgp.recently_missed_count += 2*missed_blocks;
else if( dgp.recently_missed_count > 0 )
dgp.recently_missed_count--;
dgp.head_block_number = b.block_num();
dgp.head_block_id = b.id();
dgp.time = b.timestamp;
dgp.current_witness = b.witness;
});
if( !(get_node_properties().skip_flags & skip_undo_history_check) )
{
GRAPHENE_ASSERT( _dgp.recently_missed_count < GRAPHENE_MAX_UNDO_HISTORY, undo_database_exception,
"The database does not have enough undo history to support a blockchain with so many missed blocks. "
"Please add a checkpoint if you would like to continue applying blocks beyond this point.",
("recently_missed",_dgp.recently_missed_count)("max_undo",GRAPHENE_MAX_UNDO_HISTORY) );
}
_undo_db.set_max_size( _dgp.recently_missed_count + GRAPHENE_MIN_UNDO_HISTORY );
}
void database::update_signing_witness(const witness_object& signing_witness, const signed_block& new_block)
{
const global_property_object& gpo = get_global_properties();
const dynamic_global_property_object& dpo = get_dynamic_global_properties();
share_type witness_pay = std::min( gpo.parameters.witness_pay_per_block, dpo.witness_budget );
modify( dpo, [&]( dynamic_global_property_object& _dpo )
{
_dpo.witness_budget -= witness_pay;
} );
deposit_witness_pay( signing_witness, witness_pay );
modify( signing_witness, [&]( witness_object& _wit )
{
_wit.previous_secret = new_block.previous_secret;
_wit.next_secret_hash = new_block.next_secret_hash;
} );
}
void database::update_pending_block(const signed_block& next_block, uint8_t current_block_interval)
{
_pending_block.timestamp = next_block.timestamp + current_block_interval;
_pending_block.previous = next_block.id();
auto old_pending_trx = std::move(_pending_block.transactions);
_pending_block.transactions.clear();
for( auto old_trx : old_pending_trx )
push_transaction( old_trx );
}
void database::clear_expired_transactions()
{
//Look for expired transactions in the deduplication list, and remove them.
//Transactions must have expired by at least two forking windows in order to be removed.
auto& transaction_idx = static_cast<transaction_index&>(get_mutable_index(implementation_ids, impl_transaction_object_type));
const auto& dedupe_index = transaction_idx.indices().get<by_expiration>();
const auto& global_parameters = get_global_properties().parameters;
while( !dedupe_index.empty()
&& head_block_time() - dedupe_index.rbegin()->trx.expiration >= fc::seconds(global_parameters.maximum_expiration) )
transaction_idx.remove(*dedupe_index.rbegin());
}
void database::clear_expired_proposals()
{
const auto& proposal_expiration_index = get_index_type<proposal_index>().indices().get<by_expiration>();
while( !proposal_expiration_index.empty() && proposal_expiration_index.begin()->expiration_time <= head_block_time() )
{
const proposal_object& proposal = *proposal_expiration_index.begin();
processed_transaction result;
try {
if( proposal.is_authorized_to_execute(*this) )
{
result = push_proposal(proposal);
//TODO: Do something with result so plugins can process it.
continue;
}
} catch( const fc::exception& e ) {
elog("Failed to apply proposed transaction on its expiration. Deleting it.\n${proposal}\n${error}",
("proposal", proposal)("error", e.to_detail_string()));
}
remove(proposal);
}
}
void database::clear_expired_orders()
{
with_skip_flags(
get_node_properties().skip_flags | skip_authority_check, [&](){
transaction_evaluation_state cancel_context(this);
//Cancel expired limit orders
auto& limit_index = get_index_type<limit_order_index>().indices().get<by_expiration>();
while( !limit_index.empty() && limit_index.begin()->expiration <= head_block_time() )
{
limit_order_cancel_operation canceler;
const limit_order_object& order = *limit_index.begin();
canceler.fee_paying_account = order.seller;
canceler.order = order.id;
apply_operation(cancel_context, canceler);
}
});
//Process expired force settlement orders
auto& settlement_index = get_index_type<force_settlement_index>().indices().get<by_expiration>();
if( !settlement_index.empty() )
{
asset_id_type current_asset = settlement_index.begin()->settlement_asset_id();
asset max_settlement_volume;
auto next_asset = [¤t_asset, &settlement_index] {
auto bound = settlement_index.upper_bound(current_asset);
if( bound == settlement_index.end() )
return false;
current_asset = bound->settlement_asset_id();
return true;
};
// At each iteration, we either consume the current order and remove it, or we move to the next asset
for( auto itr = settlement_index.lower_bound(current_asset);
itr != settlement_index.end();
itr = settlement_index.lower_bound(current_asset) )
{
const force_settlement_object& order = *itr;
auto order_id = order.id;
current_asset = order.settlement_asset_id();
const asset_object& mia_object = get(current_asset);
const asset_bitasset_data_object mia = mia_object.bitasset_data(*this);
// Has this order not reached its settlement date?
if( order.settlement_date > head_block_time() )
{
if( next_asset() )
continue;
break;
}
// Can we still settle in this asset?
if( mia.current_feed.settlement_price.is_null() )
{
ilog("Canceling a force settlement in ${asset} because settlement price is null",
("asset", mia_object.symbol));
cancel_order(order);
continue;
}
if( max_settlement_volume.asset_id != current_asset )
max_settlement_volume = mia_object.amount(mia.max_force_settlement_volume(mia_object.dynamic_data(*this).current_supply));
if( mia.force_settled_volume >= max_settlement_volume.amount )
{
/*
ilog("Skipping force settlement in ${asset}; settled ${settled_volume} / ${max_volume}",
("asset", mia_object.symbol)("settlement_price_null",mia.current_feed.settlement_price.is_null())
("settled_volume", mia.force_settled_volume)("max_volume", max_settlement_volume));
*/
if( next_asset() )
continue;
break;
}
auto& pays = order.balance;
auto receives = (order.balance * mia.current_feed.settlement_price);
receives.amount = (fc::uint128_t(receives.amount.value) *
(GRAPHENE_100_PERCENT - mia.options.force_settlement_offset_percent) / GRAPHENE_100_PERCENT).to_uint64();
assert(receives <= order.balance * mia.current_feed.settlement_price);
price settlement_price = pays / receives;
auto& call_index = get_index_type<call_order_index>().indices().get<by_collateral>();
asset settled = mia_object.amount(mia.force_settled_volume);
// Match against the least collateralized short until the settlement is finished or we reach max settlements
while( settled < max_settlement_volume && find_object(order_id) )
{
auto itr = call_index.lower_bound(boost::make_tuple(price::min(mia_object.bitasset_data(*this).options.short_backing_asset,
mia_object.get_id())));
// There should always be a call order, since asset exists!
assert(itr != call_index.end() && itr->debt_type() == mia_object.get_id());
asset max_settlement = max_settlement_volume - settled;
settled += match(*itr, order, settlement_price, max_settlement);
}
modify(mia, [settled](asset_bitasset_data_object& b) {
b.force_settled_volume = settled.amount;
});
}
}
}
void database::update_expired_feeds()
{
auto& asset_idx = get_index_type<asset_index>().indices();
for( const asset_object& a : asset_idx )
{
if( !a.is_market_issued() )
continue;
const asset_bitasset_data_object& b = a.bitasset_data(*this);
if( b.feed_is_expired(head_block_time()) )
{
modify(b, [this](asset_bitasset_data_object& a) {
a.update_median_feeds(head_block_time());
});
check_call_orders(b.current_feed.settlement_price.base.asset_id(*this));
}
if( !b.current_feed.core_exchange_rate.is_null() &&
a.options.core_exchange_rate != b.current_feed.core_exchange_rate )
modify(a, [&b](asset_object& a) {
a.options.core_exchange_rate = b.current_feed.core_exchange_rate;
});
}
}
void database::update_withdraw_permissions()
{
auto& permit_index = get_index_type<withdraw_permission_index>().indices().get<by_expiration>();
while( !permit_index.empty() && permit_index.begin()->expiration <= head_block_time() )
remove(*permit_index.begin());
}
} }