forked from GolosChain/golos
-
Notifications
You must be signed in to change notification settings - Fork 0
/
witness.cpp
595 lines (529 loc) · 31.9 KB
/
witness.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
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
#include <golos/witness/witness.hpp>
#include <golos/chain/database_exceptions.hpp>
#include <golos/chain/objects/account_object.hpp>
#include <golos/chain/objects/steem_objects.hpp>
#include <golos/utilities/key_conversion.hpp>
#include <fc/smart_ref_impl.hpp>
#include <fc/time.hpp>
void new_chain_banner(const golos::chain::database &db) {
std::cerr << "\n"
"********************************\n"
"* *\n"
"* ------- NEW CHAIN ------ *\n"
"* - Welcome to Golos! - *\n"
"* ------------------------ *\n"
"* *\n"
"********************************\n"
"\n";
return;
}
namespace golos {
namespace witness_plugin {
void witness_plugin::plugin_set_program_options(
boost::program_options::options_description &command_line_options,
boost::program_options::options_description &config_file_options) {
std::string witness_id_example = "initwitness";
command_line_options.add_options()("enable-stale-production",
boost::program_options::bool_switch()->notifier([this](bool e) {
_production_enabled = e;
}), "Enable block production, even if the chain is stale.")(
"required-participation", boost::program_options::bool_switch()->notifier([this](int e) {
_required_witness_participation = uint32_t(e * STEEMIT_1_PERCENT);
}), "Percent of witnesses (0-99) that must be participating in order to produce blocks")(
"witness,w", boost::program_options::value<std::vector<std::string>>()->composing()->multitoken(),
("name of witness controlled by this node (e.g. " + witness_id_example + " )").c_str())("miner,m",
boost::program_options::value<
std::vector<
std::string>>()->composing()->multitoken(),
"name of miner and its private key (e.g. [\"account\",\"WIF PRIVATE KEY\"] )")(
"mining-threads,t", boost::program_options::value<uint32_t>(),
"Number of threads to use for proof of work mining")("private-key", boost::program_options::value<
std::vector<std::string>>()->composing()->multitoken(),
"WIF PRIVATE KEY to be used by one or more witnesses or miners")(
"miner-account-creation-fee", boost::program_options::value<uint64_t>()->implicit_value(100000),
"Account creation fee to be voted on upon successful POW - Minimum fee is 100.000 STEEM (written as 100000)")(
"miner-maximum-block-size", boost::program_options::value<uint32_t>()->implicit_value(131072),
"Maximum block size (in bytes) to be voted on upon successful POW - Max block size must be between 128 KB and 750 MB")(
"miner-sbd-interest-rate", boost::program_options::value<uint32_t>()->implicit_value(1000),
"SBD interest rate to be vote on upon successful POW - Default interest rate is 10% (written as 1000)");
config_file_options.add(command_line_options);
}
std::string witness_plugin::plugin_name() const {
return "witness";
}
using std::pair;
void witness_plugin::plugin_initialize(const boost::program_options::variables_map &options) {
try {
ilog("witness plugin: plugin_initialize() begin");
_options = &options;
LOAD_VALUE_SET(options, "witness", _witnesses, std::string)
edump((_witnesses));
if (options.count("miner")) {
const std::vector<std::string> miner_to_wif_pair_strings = options["miner"].as<
std::vector<std::string>>();
for (auto p : miner_to_wif_pair_strings) {
auto m = golos::application::dejsonify<pair<std::string, std::string>>(p);
idump((m));
fc::optional<fc::ecc::private_key> private_key = graphene::utilities::wif_to_key(m.second);
FC_ASSERT(private_key.valid(), "unable to parse private key");
_private_keys[private_key->get_public_key()] = *private_key;
_miners[m.first] = private_key->get_public_key();
}
}
if (options.count("mining-threads")) {
_mining_threads = std::min(options["mining-threads"].as<uint32_t>(), uint32_t(64));
_thread_pool.resize(_mining_threads);
for (uint32_t i = 0; i < _mining_threads; ++i) {
_thread_pool[i] = std::make_shared<fc::thread>();
}
}
if (options.count("private-key")) {
const std::vector<std::string> keys = options["private-key"].as<std::vector<std::string>>();
for (const std::string &wif_key : keys) {
fc::optional<fc::ecc::private_key> private_key = graphene::utilities::wif_to_key(wif_key);
FC_ASSERT(private_key.valid(), "unable to parse private key");
_private_keys[private_key->get_public_key()] = *private_key;
}
}
if (options.count("miner-account-creation-fee")) {
const uint64_t account_creation_fee = options["miner-account-creation-fee"].as<uint64_t>();
if (account_creation_fee < STEEMIT_MIN_ACCOUNT_CREATION_FEE)
wlog("miner-account-creation-fee is below the minimum fee, using minimum instead");
else {
_miner_prop_vote.account_creation_fee.amount = account_creation_fee;
}
}
if (options.count("miner-maximum-block-size")) {
const uint32_t maximum_block_size = options["miner-maximum-block-size"].as<uint32_t>();
if (maximum_block_size < STEEMIT_MIN_BLOCK_SIZE_LIMIT)
wlog("miner-maximum-block-size is below the minimum block size limit, using default of 128 KB instead");
else if (maximum_block_size > STEEMIT_MAX_BLOCK_SIZE) {
wlog("miner-maximum-block-size is above the maximum block size limit, using maximum of 750 MB instead");
_miner_prop_vote.maximum_block_size = STEEMIT_MAX_BLOCK_SIZE;
} else {
_miner_prop_vote.maximum_block_size = maximum_block_size;
}
}
if (options.count("miner-sbd-interest-rate")) {
_miner_prop_vote.sbd_interest_rate = options["miner-sbd-interest-rate"].as<uint32_t>();
}
ilog("witness plugin: plugin_initialize() end");
} FC_LOG_AND_RETHROW()
}
void witness_plugin::plugin_startup() {
try {
ilog("witness plugin: plugin_startup() begin");
chain::database &d = database();
if (!_witnesses.empty()) {
ilog("Launching block production for ${n} witnesses.", ("n", _witnesses.size()));
app().set_block_production(true);
if (_production_enabled) {
if (d.head_block_num() == 0) {
new_chain_banner(d);
}
_production_skip_flags |= chain::database::skip_undo_history_check;
}
schedule_production_loop();
} else
elog("No witnesses configured! Please add witness names and private keys to configuration.");
if (!_miners.empty()) {
ilog("Starting mining...");
d.applied_block.connect([this](const protocol::signed_block &b) {
this->on_applied_block(b);
});
} else {
elog("No miners configured! Please add miner names and private keys to configuration.");
}
ilog("witness plugin: plugin_startup() end");
} FC_CAPTURE_AND_RETHROW()
}
void witness_plugin::plugin_shutdown() {
if (!_miners.empty()) {
ilog("shutting downing mining threads");
_thread_pool.clear();
}
return;
}
void witness_plugin::schedule_production_loop() {
//Schedule for the next second's tick regardless of chain state
// If we would wait less than 50ms, wait for the whole second.
fc::time_point fc_now = fc::time_point::now();
int64_t time_to_next_second = 1000000 - (fc_now.time_since_epoch().count() % 1000000);
if (time_to_next_second < 50000) { // we must sleep for at least 50ms
time_to_next_second += 1000000;
}
fc::time_point next_wakeup(fc_now + fc::microseconds(time_to_next_second));
//wdump( (now.time_since_epoch().count())(next_wakeup.time_since_epoch().count()) );
_block_production_task = fc::schedule([this] {
block_production_loop();
}, next_wakeup, "Witness Block Production");
}
block_production_condition::block_production_condition_enum witness_plugin::block_production_loop() {
if (fc::time_point::now() < fc::time_point(STEEMIT_GENESIS_TIME)) {
wlog("waiting until genesis time to produce block: ${t}", ("t", STEEMIT_GENESIS_TIME));
schedule_production_loop();
return block_production_condition::wait_for_genesis;
}
block_production_condition::block_production_condition_enum result;
fc::mutable_variant_object capture;
try {
result = maybe_produce_block(capture);
} catch (const fc::canceled_exception &) {
//We're trying to exit. Go ahead and let this one out.
throw;
} catch (const chain::exceptions::chain::unknown_hardfork<> &e) {
// Hit a hardfork that the current node know nothing about, stop production and inform user
elog("${e}\nNode may be out of date...", ("e", e.to_detail_string()));
throw;
} catch (const fc::exception &e) {
elog("Got exception while generating block:\n${e}", ("e", e.to_detail_string()));
result = block_production_condition::exception_producing_block;
}
switch (result) {
case block_production_condition::produced:
ilog("Generated block #${n} with timestamp ${t} at time ${c} by ${w}", (capture));
break;
case block_production_condition::not_synced:
//ilog("Not producing block because production is disabled until we receive a recent block (see: --enable-stale-production)");
break;
case block_production_condition::not_my_turn:
//ilog("Not producing block because it isn't my turn");
break;
case block_production_condition::not_time_yet:
// ilog("Not producing block because slot has not yet arrived");
break;
case block_production_condition::no_private_key:
ilog("Not producing block for ${scheduled_witness} because I don't have the private key for ${scheduled_key}",
(capture));
break;
case block_production_condition::low_participation:
elog("Not producing block because node appears to be on a minority fork with only ${pct}% witness participation",
(capture));
break;
case block_production_condition::lag:
elog("Not producing block because node didn't wake up within 500ms of the slot time.");
break;
case block_production_condition::consecutive:
elog("Not producing block because the last block was generated by the same witness.\nThis node is probably disconnected from the network so block production has been disabled.\nDisable this check with --allow-consecutive option.");
break;
case block_production_condition::exception_producing_block:
elog("Failure when producing block with no transactions");
break;
case block_production_condition::wait_for_genesis:
break;
}
schedule_production_loop();
return result;
}
block_production_condition::block_production_condition_enum witness_plugin::maybe_produce_block(
fc::mutable_variant_object &capture) {
chain::database &db = database();
fc::time_point now_fine = fc::time_point::now();
fc::time_point_sec now = now_fine + fc::microseconds(500000);
// If the next block production opportunity is in the present or future, we're synced.
if (!_production_enabled) {
if (db.get_slot_time(1) >= now) {
_production_enabled = true;
} else {
return block_production_condition::not_synced;
}
}
// is anyone scheduled to produce now or one second in the future?
uint32_t slot = db.get_slot_at_time(now);
if (slot == 0) {
capture("next_time", db.get_slot_time(1));
return block_production_condition::not_time_yet;
}
//
// this assert should not fail, because now <= db.head_block_time()
// should have resulted in slot == 0.
//
// if this assert triggers, there is a serious bug in get_slot_at_time()
// which would result in allowing a later block to have a timestamp
// less than or equal to the previous block
//
assert(now > db.head_block_time());
std::string scheduled_witness = db.get_scheduled_witness(slot);
// we must control the witness scheduled to produce the next block.
if (_witnesses.find(scheduled_witness) == _witnesses.end()) {
capture("scheduled_witness", scheduled_witness);
return block_production_condition::not_my_turn;
}
const auto &witness_by_name = db.get_index<chain::witness_index>().indices().get<chain::by_name>();
auto itr = witness_by_name.find(scheduled_witness);
fc::time_point_sec scheduled_time = db.get_slot_time(slot);
golos::protocol::public_key_type scheduled_key = itr->signing_key;
auto private_key_itr = _private_keys.find(scheduled_key);
if (private_key_itr == _private_keys.end()) {
capture("scheduled_witness", scheduled_witness);
capture("scheduled_key", scheduled_key);
return block_production_condition::no_private_key;
}
uint32_t prate = db.witness_participation_rate();
if (prate < _required_witness_participation) {
capture("pct", uint32_t(100 * uint64_t(prate) / STEEMIT_1_PERCENT));
return block_production_condition::low_participation;
}
if (llabs((scheduled_time - now).count()) > fc::milliseconds(500).count()) {
capture("scheduled_time", scheduled_time)("now", now);
return block_production_condition::lag;
}
int retry = 0;
do {
try {
auto block = db.generate_block(scheduled_time, scheduled_witness, private_key_itr->second,
_production_skip_flags);
capture("n", block.block_num())("t", block.timestamp)("c", now)("w", scheduled_witness);
fc::async([this, block]() {
p2p_node().broadcast(network::block_message(block));
});
return block_production_condition::produced;
} catch (fc::exception &e) {
elog("${e}", ("e", e.to_detail_string()));
elog("Clearing pending transactions and attempting again");
db.clear_pending();
retry++;
}
} while (retry < 2);
return block_production_condition::exception_producing_block;
}
/**
* Every time a block is produced, this method is called. This method will iterate through all
* mining accounts specified by commandline and for which the private key is known. The first
* account that isn't already scheduled in the mining queue is selected to mine for the
* BLOCK_INTERVAL minus 1 second. If a POW is solved or a a new block comes in then the
* worker will stop early.
*
* Work is farmed out to N threads in parallel based upon the value specified on the command line.
*
* The miner assumes that the next block will be produced on time and that network propagation
* will take at least 1 second. This 1 second consists of the time it took to receive the block
* and how long it will take to broadcast the work. In other words, we assume 0.5s broadcast times
* and therefore do not even attempt work that cannot be delivered on time.
*/
void witness_plugin::on_applied_block(const golos::protocol::signed_block &b) {
try {
if (!_mining_threads || _miners.size() == 0) {
return;
}
chain::database &db = database();
const auto &dgp = db.get_dynamic_global_properties();
double hps = (_total_hashes * 1000000) / (fc::time_point::now() - _hash_start_time).count();
uint64_t i_hps = uint64_t(hps + 0.5);
uint32_t summary_target = db.get_pow_summary_target();
double target = fc::sha256::inverse_approx_log_32_double(summary_target);
static const double max_target = std::ldexp(1.0, 256);
double seconds_needed = 0.0;
if (i_hps > 0) {
double hashes_needed = max_target / target;
seconds_needed = hashes_needed / i_hps;
}
uint64_t minutes_needed = uint64_t(seconds_needed / 60.0 + 0.5);
fc::sha256 hash_target;
hash_target.set_to_inverse_approx_log_32(summary_target);
if (_total_hashes > 0)
ilog("hash rate: ${x} hps target: ${t} queue: ${l} estimated time to produce: ${m} minutes",
("x", i_hps)("t", hash_target.str())("m", minutes_needed)("l", dgp.num_pow_witnesses));
_head_block_num = b.block_num();
_head_block_id = b.id();
/// save these variables to be captured by worker lambda
for (const auto &miner : _miners) {
const auto *w = db.find_witness(miner.first);
if (!w || w->pow_worker == 0) {
auto miner_pub_key = miner.second; //a.active.key_auths.begin()->first;
auto priv_key_itr = _private_keys.find(miner_pub_key);
if (priv_key_itr == _private_keys.end()) {
continue; /// skipping miner for lack of private key
}
auto miner_priv_key = priv_key_itr->second;
start_mining(miner_pub_key, priv_key_itr->second, miner.first, b);
break;
} else {
ilog("Skipping miner ${m} because it is already scheduled to produce a block", ("m", miner));
}
} // for miner in miners
} catch (const fc::exception &e) {
ilog("exception thrown while attempting to mine");
}
}
void witness_plugin::start_mining(const fc::ecc::public_key &pub, const fc::ecc::private_key &pk,
const std::string &miner, const golos::protocol::signed_block &b) {
static uint64_t seed = fc::time_point::now().time_since_epoch().count();
static uint64_t start = fc::city_hash64((const char *) &seed, sizeof(seed));
chain::database &db = database();
auto head_block_num = b.block_num();
auto head_block_time = b.timestamp;
auto block_id = b.id();
fc::thread *mainthread = &fc::thread::current();
_total_hashes = 0;
_hash_start_time = fc::time_point::now();
auto stop = head_block_time + fc::seconds(STEEMIT_BLOCK_INTERVAL * 2);
uint32_t thread_num = 0;
uint32_t num_threads = _mining_threads;
uint32_t target = db.get_pow_summary_target();
const auto &acct_idx = db.get_index<chain::account_index>().indices().get<chain::by_name>();
auto acct_it = acct_idx.find(miner);
bool has_account = (acct_it != acct_idx.end());
bool has_hardfork_17 = db.has_hardfork(STEEMIT_HARDFORK_0_17__177);
bool has_hardfork_16 = db.has_hardfork(STEEMIT_HARDFORK_0_16__551);
for (auto &t : _thread_pool) {
thread_num++;
t->async([=]() {
if (has_hardfork_17) {
protocol::pow2_operation<0, 17, 0> op;
protocol::equihash_pow work;
work.input.prev_block = block_id;
work.input.worker_account = miner;
work.input.nonce = start + thread_num;
op.props = _miner_prop_vote;
while (true) {
if (fc::time_point::now() > stop) {
ilog("stop mining due to time out, nonce: ${n}", ("n", work.input.nonce));
return;
}
if (this->_head_block_num != head_block_num) {
wlog("stop mining due new block arrival, nonce: ${n}", ("n", work.input.nonce));
return;
}
++this->_total_hashes;
work.input.nonce += num_threads;
// work.create(block_id, miner, work.input.nonce);
work.proof.n = STEEMIT_EQUIHASH_N;
work.proof.k = STEEMIT_EQUIHASH_K;
work.proof.seed = fc::sha256::hash( work.input );
work.proof.inputs = {
2930666, 3055534, 16227194, 1878724, 3055534, 3370375, 10368718, 8279292,
1878724, 12665269, 13416647, 14101780, 14954112, 16332900, 7269530, 13055417,
16709657, 14859041, 8879475, 3839300, 8879475, 14954112, 3370375, 7416112,
15613499, 15613499, 6086878, 9856240, 587509, 587509, 6047993, 10368718,
6449363, 7416112, 15056305, 8279292, 13055417, 6086878, 16332900, 14859041,
308997, 13416647, 14101780, 2930666, 2552223, 12665269, 2552223, 6047993,
308997, 16709657, 3654688, 9885009, 15056305, 9856240, 7269530, 3654688,
5757028, 16227194, 5757028, 3839300, 9885009, 6449363, 2141293, 2141293 };
work.pow_summary = fc::sha256::hash( work.proof.inputs ).approx_log_32();
if (work.proof.is_valid() && work.pow_summary < target) {
protocol::signed_transaction trx;
work.prev_block = this->_head_block_id;
op.work = work;
if (!has_account) {
op.new_owner_key = pub;
}
trx.operations.push_back(op);
trx.ref_block_num = head_block_num;
trx.ref_block_prefix = work.input.prev_block._hash[1];
trx.set_expiration(head_block_time + STEEMIT_MAX_TIME_UNTIL_EXPIRATION);
trx.sign(pk, STEEMIT_CHAIN_ID);
++this->_head_block_num;
mainthread->async([this, miner, trx]() {
try {
database().push_transaction(trx);
ilog("Broadcasting Proof of Work for ${miner}", ("miner", miner));
p2p_node().broadcast(golos::network::trx_message(trx));
} catch (const fc::exception &e) {
wdump((e.to_detail_string()));
}
});
return;
}
}
} else if (has_hardfork_16) {
protocol::pow2_operation<0, 16, 0> op;
protocol::equihash_pow work;
work.input.prev_block = block_id;
work.input.worker_account = miner;
work.input.nonce = start + thread_num;
op.props = {protocol::asset<0, 16, 0>(_miner_prop_vote.account_creation_fee.amount,
_miner_prop_vote.account_creation_fee.symbol_name()),
_miner_prop_vote.maximum_block_size, _miner_prop_vote.sbd_interest_rate};
while (true) {
if (fc::time_point::now() > stop) {
ilog("stop mining due to time out, nonce: ${n}", ("n", work.input.nonce));
return;
}
if (this->_head_block_num != head_block_num) {
wlog("stop mining due new block arrival, nonce: ${n}", ("n", work.input.nonce));
return;
}
++this->_total_hashes;
work.input.nonce += num_threads;
work.create(block_id, miner, work.input.nonce);
if (work.proof.is_valid() && work.pow_summary < target) {
protocol::signed_transaction trx;
work.prev_block = this->_head_block_id;
op.work = work;
if (!has_account) {
op.new_owner_key = pub;
}
trx.operations.push_back(op);
trx.ref_block_num = head_block_num;
trx.ref_block_prefix = work.input.prev_block._hash[1];
trx.set_expiration(head_block_time + STEEMIT_MAX_TIME_UNTIL_EXPIRATION);
trx.sign(pk, STEEMIT_CHAIN_ID);
++this->_head_block_num;
mainthread->async([this, miner, trx]() {
try {
database().push_transaction(trx);
ilog("Broadcasting Proof of Work for ${miner}", ("miner", miner));
p2p_node().broadcast(golos::network::trx_message(trx));
} catch (const fc::exception &e) {
wdump((e.to_detail_string()));
}
});
return;
}
}
} else // delete after hardfork 16
{
protocol::pow2_operation<0, 16, 0> op;
protocol::pow2 work;
work.input.prev_block = block_id;
work.input.worker_account = miner;
work.input.nonce = start + thread_num;
op.props = {protocol::asset<0, 16, 0>(_miner_prop_vote.account_creation_fee.amount,
_miner_prop_vote.account_creation_fee.symbol_name()),
_miner_prop_vote.maximum_block_size, _miner_prop_vote.sbd_interest_rate};
while (true) {
// if( ((op.nonce/num_threads) % 1000) == 0 ) idump((op.nonce));
if (fc::time_point::now() > stop) {
// ilog( "stop mining due to time out, nonce: ${n}", ("n",op.nonce) );
return;
}
if (this->_head_block_num != head_block_num) {
// wlog( "stop mining due new block arrival, nonce: ${n}", ("n",op.nonce));
return;
}
++this->_total_hashes;
work.input.nonce += num_threads;
work.create(block_id, miner, work.input.nonce);
if (work.pow_summary < target) {
++this->_head_block_num; /// signal other workers to stop
protocol::signed_transaction trx;
op.work = work;
if (!has_account) {
op.new_owner_key = pub;
}
trx.operations.push_back(op);
trx.ref_block_num = head_block_num;
trx.ref_block_prefix = work.input.prev_block._hash[1];
trx.set_expiration(head_block_time + STEEMIT_MAX_TIME_UNTIL_EXPIRATION);
trx.sign(pk, STEEMIT_CHAIN_ID);
mainthread->async([this, miner, trx]() {
try {
database().push_transaction(trx);
ilog("Broadcasting Proof of Work for ${miner}", ("miner", miner));
p2p_node().broadcast(golos::network::trx_message(trx));
} catch (const fc::exception &e) {
wdump((e.to_detail_string()));
}
});
return;
}
}
}
});
thread_num++;
}
}
}
}
STEEMIT_DEFINE_PLUGIN(witness, golos::witness_plugin::witness_plugin)