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			22 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			470 lines
		
	
	
	
		
			22 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
| /*
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|     This file is part of TON Blockchain Library.
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| 
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|     TON Blockchain Library is free software: you can redistribute it and/or modify
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|     it under the terms of the GNU Lesser General Public License as published by
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|     the Free Software Foundation, either version 2 of the License, or
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|     (at your option) any later version.
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| 
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|     TON Blockchain Library is distributed in the hope that it will be useful,
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|     but WITHOUT ANY WARRANTY; without even the implied warranty of
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|     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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|     GNU Lesser General Public License for more details.
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| 
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|     You should have received a copy of the GNU Lesser General Public License
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|     along with TON Blockchain Library.  If not, see <http://www.gnu.org/licenses/>.
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| 
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|     Copyright 2017-2020 Telegram Systems LLP
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| */
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| #include "validator-group.hpp"
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| #include "fabric.h"
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| #include "ton/ton-io.hpp"
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| #include "td/utils/overloaded.h"
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| #include "common/delay.h"
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| #include "ton/lite-tl.hpp"
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| 
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| namespace ton {
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| 
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| namespace validator {
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| 
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| void ValidatorGroup::generate_block_candidate(
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|     td::uint32 round_id, td::Promise<validatorsession::ValidatorSession::GeneratedCandidate> promise) {
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|   if (round_id > last_known_round_id_) {
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|     last_known_round_id_ = round_id;
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|   }
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|   if (!started_) {
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|     promise.set_error(td::Status::Error(ErrorCode::notready, "cannot collate block: group not started"));
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|     return;
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|   }
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|   if (cached_collated_block_) {
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|     if (cached_collated_block_->result) {
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|       promise.set_value({cached_collated_block_->result.value().clone(), true});
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|     } else {
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|       cached_collated_block_->promises.push_back(promise.wrap([](BlockCandidate &&res) {
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|         return validatorsession::ValidatorSession::GeneratedCandidate{std::move(res), true};
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|       }));
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|     }
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|     return;
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|   }
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|   cached_collated_block_ = std::make_shared<CachedCollatedBlock>();
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|   cached_collated_block_->promises.push_back(promise.wrap([](BlockCandidate &&res) {
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|     return validatorsession::ValidatorSession::GeneratedCandidate{std::move(res), false};
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|   }));
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|   run_collate_query(
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|       shard_, min_ts_, min_masterchain_block_id_, prev_block_ids_,
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|       Ed25519_PublicKey{local_id_full_.ed25519_value().raw()}, validator_set_, manager_, td::Timestamp::in(10.0),
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|       [SelfId = actor_id(this), cache = cached_collated_block_](td::Result<BlockCandidate> R) {
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|         td::actor::send_closure(SelfId, &ValidatorGroup::generated_block_candidate, std::move(cache), std::move(R));
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|       });
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| }
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| 
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| void ValidatorGroup::generated_block_candidate(std::shared_ptr<CachedCollatedBlock> cache, td::Result<BlockCandidate> R) {
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|   if (R.is_error()) {
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|     for (auto &p : cache->promises) {
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|       p.set_error(R.error().clone());
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|     }
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|     if (cache == cached_collated_block_) {
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|       cached_collated_block_ = nullptr;
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|     }
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|   } else {
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|     auto candidate = R.move_as_ok();
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|     add_available_block_candidate(candidate.pubkey.as_bits256(), candidate.id, candidate.collated_file_hash);
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|     cache->result = std::move(candidate);
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|     for (auto &p : cache->promises) {
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|       p.set_value(cache->result.value().clone());
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|     }
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|   }
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|   cache->promises.clear();
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| }
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| 
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| void ValidatorGroup::validate_block_candidate(td::uint32 round_id, BlockCandidate block,
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|                                               td::Promise<std::pair<UnixTime, bool>> promise) {
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|   if (round_id > last_known_round_id_) {
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|     last_known_round_id_ = round_id;
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|   }
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|   if (round_id < last_known_round_id_) {
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|     promise.set_error(td::Status::Error(ErrorCode::notready, "too old"));
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|     return;
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|   }
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| 
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|   auto next_block_id = create_next_block_id(block.id.root_hash, block.id.file_hash);
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|   block.id = next_block_id;
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| 
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|   CacheKey cache_key = block_to_cache_key(block);
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|   auto it = approved_candidates_cache_.find(cache_key);
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|   if (it != approved_candidates_cache_.end()) {
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|     promise.set_value({it->second, true});
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|     return;
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|   }
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| 
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|   auto P = td::PromiseCreator::lambda([SelfId = actor_id(this), round_id, block = block.clone(),
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|                                        promise = std::move(promise)](td::Result<ValidateCandidateResult> R) mutable {
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|     if (R.is_error()) {
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|       auto S = R.move_as_error();
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|       if (S.code() != ErrorCode::timeout && S.code() != ErrorCode::notready) {
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|         LOG(ERROR) << "failed to validate candidate: " << S;
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|       }
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|       delay_action(
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|           [SelfId, round_id, block = std::move(block), promise = std::move(promise)]() mutable {
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|             td::actor::send_closure(SelfId, &ValidatorGroup::validate_block_candidate, round_id, std::move(block),
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|                                     std::move(promise));
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|           },
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|           td::Timestamp::in(0.1));
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|     } else {
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|       auto v = R.move_as_ok();
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|       v.visit(td::overloaded(
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|           [&](UnixTime ts) {
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|             td::actor::send_closure(SelfId, &ValidatorGroup::update_approve_cache, block_to_cache_key(block),
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|                                     ts);
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|             td::actor::send_closure(SelfId, &ValidatorGroup::add_available_block_candidate, block.pubkey.as_bits256(),
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|                                     block.id, block.collated_file_hash);
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|             promise.set_value({ts, false});
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|           },
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|           [&](CandidateReject reject) {
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|             promise.set_error(
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|                 td::Status::Error(ErrorCode::protoviolation, PSTRING() << "bad candidate: " << reject.reason));
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|           }));
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|     }
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|   });
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|   if (!started_) {
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|     P.set_error(td::Status::Error(ErrorCode::notready, "validator group not started"));
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|     return;
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|   }
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|   VLOG(VALIDATOR_DEBUG) << "validating block candidate " << next_block_id;
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|   block.id = next_block_id;
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|   run_validate_query(shard_, min_ts_, min_masterchain_block_id_, prev_block_ids_, std::move(block), validator_set_,
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|                      manager_, td::Timestamp::in(15.0), std::move(P));
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| }
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| 
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| void ValidatorGroup::update_approve_cache(CacheKey key, UnixTime value) {
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|   approved_candidates_cache_[key] = value;
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| }
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| 
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| void ValidatorGroup::accept_block_candidate(td::uint32 round_id, PublicKeyHash src, td::BufferSlice block_data,
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|                                             RootHash root_hash, FileHash file_hash,
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|                                             std::vector<BlockSignature> signatures,
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|                                             std::vector<BlockSignature> approve_signatures,
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|                                             validatorsession::ValidatorSessionStats stats,
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|                                             td::Promise<td::Unit> promise) {
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|   stats.cc_seqno = validator_set_->get_catchain_seqno();
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|   if (round_id >= last_known_round_id_) {
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|     last_known_round_id_ = round_id + 1;
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|   }
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|   auto sig_set = create_signature_set(std::move(signatures));
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|   validator_set_->check_signatures(root_hash, file_hash, sig_set).ensure();
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|   auto approve_sig_set = create_signature_set(std::move(approve_signatures));
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|   validator_set_->check_approve_signatures(root_hash, file_hash, approve_sig_set).ensure();
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| 
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|   if (!started_) {
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|     postponed_accept_.push_back(PostponedAccept{root_hash, file_hash, std::move(block_data), std::move(sig_set),
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|                                                 std::move(approve_sig_set), std::move(stats), std::move(promise)});
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|     return;
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|   }
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|   auto next_block_id = create_next_block_id(root_hash, file_hash);
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|   LOG(WARNING) << "Accepted block " << next_block_id;
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|   td::actor::send_closure(manager_, &ValidatorManager::log_validator_session_stats, next_block_id, std::move(stats));
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|   auto block =
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|       block_data.size() > 0 ? create_block(next_block_id, std::move(block_data)).move_as_ok() : td::Ref<BlockData>{};
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|   bool send_broadcast = src == local_id_;
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| 
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|   auto P = td::PromiseCreator::lambda([=, SelfId = actor_id(this), block_id = next_block_id, prev = prev_block_ids_,
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|                                        promise = std::move(promise)](td::Result<td::Unit> R) mutable {
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|     if (R.is_error()) {
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|       if (R.error().code() == ErrorCode::cancelled) {
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|         promise.set_value(td::Unit());
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|         return;
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|       }
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|       LOG_CHECK(R.error().code() == ErrorCode::timeout || R.error().code() == ErrorCode::notready) << R.move_as_error();
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|       td::actor::send_closure(SelfId, &ValidatorGroup::retry_accept_block_query, block_id, std::move(block),
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|                               std::move(prev), std::move(sig_set), std::move(approve_sig_set), send_broadcast,
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|                               std::move(promise));
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|     } else {
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|       promise.set_value(R.move_as_ok());
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|     }
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|   });
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| 
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|   run_accept_block_query(next_block_id, std::move(block), prev_block_ids_, validator_set_, std::move(sig_set),
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|                          std::move(approve_sig_set), send_broadcast, manager_, std::move(P));
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|   prev_block_ids_ = std::vector<BlockIdExt>{next_block_id};
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|   cached_collated_block_ = nullptr;
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|   approved_candidates_cache_.clear();
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| }
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| 
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| void ValidatorGroup::retry_accept_block_query(BlockIdExt block_id, td::Ref<BlockData> block,
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|                                               std::vector<BlockIdExt> prev, td::Ref<BlockSignatureSet> sig_set,
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|                                               td::Ref<BlockSignatureSet> approve_sig_set, bool send_broadcast,
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|                                               td::Promise<td::Unit> promise) {
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|   auto P = td::PromiseCreator::lambda(
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|       [=, SelfId = actor_id(this), promise = std::move(promise)](td::Result<td::Unit> R) mutable {
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|         if (R.is_error()) {
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|           LOG_CHECK(R.error().code() == ErrorCode::timeout) << R.move_as_error();
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|           td::actor::send_closure(SelfId, &ValidatorGroup::retry_accept_block_query, block_id, std::move(block),
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|                                   std::move(prev), std::move(sig_set), std::move(approve_sig_set), send_broadcast,
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|                                   std::move(promise));
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|         } else {
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|           promise.set_value(R.move_as_ok());
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|         }
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|       });
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| 
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|   run_accept_block_query(block_id, std::move(block), prev, validator_set_, std::move(sig_set),
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|                          std::move(approve_sig_set), send_broadcast, manager_, std::move(P));
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| }
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| 
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| void ValidatorGroup::skip_round(td::uint32 round_id) {
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|   if (round_id >= last_known_round_id_) {
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|     last_known_round_id_ = round_id + 1;
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|   }
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| }
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| 
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| void ValidatorGroup::get_approved_candidate(PublicKey source, RootHash root_hash, FileHash file_hash,
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|                                             FileHash collated_data_file_hash, td::Promise<BlockCandidate> promise) {
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|   BlockIdExt id = create_next_block_id(root_hash, file_hash);
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| 
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|   td::actor::send_closure(manager_, &ValidatorManager::get_block_candidate_from_db, source, id, collated_data_file_hash,
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|                           std::move(promise));
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| }
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| 
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| BlockIdExt ValidatorGroup::create_next_block_id(RootHash root_hash, FileHash file_hash) const {
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|   BlockSeqno seqno = 0;
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|   for (auto &p : prev_block_ids_) {
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|     if (seqno < p.id.seqno) {
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|       seqno = p.id.seqno;
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|     }
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|   }
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|   return BlockIdExt{shard_.workchain, shard_.shard, seqno + 1, root_hash, file_hash};
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| }
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| 
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| BlockId ValidatorGroup::create_next_block_id_simple() const {
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|   BlockSeqno seqno = 0;
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|   for (auto &p : prev_block_ids_) {
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|     if (seqno < p.id.seqno) {
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|       seqno = p.id.seqno;
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|     }
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|   }
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|   return BlockId{shard_.workchain, shard_.shard, seqno + 1};
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| }
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| 
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| std::unique_ptr<validatorsession::ValidatorSession::Callback> ValidatorGroup::make_validator_session_callback() {
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|   class Callback : public validatorsession::ValidatorSession::Callback {
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|    public:
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|     Callback(td::actor::ActorId<ValidatorGroup> id) : id_(id) {
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|     }
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|     void on_candidate(td::uint32 round, PublicKey source, validatorsession::ValidatorSessionRootHash root_hash,
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|                       td::BufferSlice data, td::BufferSlice collated_data,
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|                       td::Promise<validatorsession::ValidatorSession::CandidateDecision> promise) override {
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|       auto P =
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|           td::PromiseCreator::lambda([promise = std::move(promise)](td::Result<std::pair<td::uint32, bool>> R) mutable {
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|             if (R.is_ok()) {
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|               validatorsession::ValidatorSession::CandidateDecision decision(R.ok().first);
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|               decision.set_is_cached(R.ok().second);
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|               promise.set_value(std::move(decision));
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|             } else {
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|               auto S = R.move_as_error();
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|               promise.set_value(
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|                   validatorsession::ValidatorSession::CandidateDecision{S.message().c_str(), td::BufferSlice()});
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|             }
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|           });
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| 
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|       BlockCandidate candidate{Ed25519_PublicKey{source.ed25519_value().raw()},
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|                                BlockIdExt{0, 0, 0, root_hash, sha256_bits256(data.as_slice())},
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|                                sha256_bits256(collated_data.as_slice()), data.clone(), collated_data.clone()};
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| 
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|       td::actor::send_closure(id_, &ValidatorGroup::validate_block_candidate, round, std::move(candidate),
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|                               std::move(P));
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|     }
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|     void on_generate_slot(td::uint32 round,
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|                           td::Promise<validatorsession::ValidatorSession::GeneratedCandidate> promise) override {
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|       td::actor::send_closure(id_, &ValidatorGroup::generate_block_candidate, round, std::move(promise));
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|     }
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|     void on_block_committed(td::uint32 round, PublicKey source, validatorsession::ValidatorSessionRootHash root_hash,
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|                             validatorsession::ValidatorSessionFileHash file_hash, td::BufferSlice data,
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|                             std::vector<std::pair<PublicKeyHash, td::BufferSlice>> signatures,
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|                             std::vector<std::pair<PublicKeyHash, td::BufferSlice>> approve_signatures,
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|                             validatorsession::ValidatorSessionStats stats) override {
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|       std::vector<BlockSignature> sigs;
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|       for (auto &sig : signatures) {
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|         sigs.emplace_back(BlockSignature{sig.first.bits256_value(), std::move(sig.second)});
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|       }
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|       std::vector<BlockSignature> approve_sigs;
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|       for (auto &sig : approve_signatures) {
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|         approve_sigs.emplace_back(BlockSignature{sig.first.bits256_value(), std::move(sig.second)});
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|       }
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|       auto P = td::PromiseCreator::lambda([](td::Result<td::Unit>) {});
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|       td::actor::send_closure(id_, &ValidatorGroup::accept_block_candidate, round, source.compute_short_id(),
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|                               std::move(data), root_hash, file_hash, std::move(sigs), std::move(approve_sigs),
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|                               std::move(stats), std::move(P));
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|     }
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|     void on_block_skipped(td::uint32 round) override {
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|       td::actor::send_closure(id_, &ValidatorGroup::skip_round, round);
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|     }
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|     void get_approved_candidate(PublicKey source, validatorsession::ValidatorSessionRootHash root_hash,
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|                                 validatorsession::ValidatorSessionFileHash file_hash,
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|                                 validatorsession::ValidatorSessionCollatedDataFileHash collated_data_file_hash,
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|                                 td::Promise<BlockCandidate> promise) override {
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|       td::actor::send_closure(id_, &ValidatorGroup::get_approved_candidate, source, root_hash, file_hash,
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|                               collated_data_file_hash, std::move(promise));
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|     }
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| 
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|    private:
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|     td::actor::ActorId<ValidatorGroup> id_;
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|   };
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| 
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|   return std::make_unique<Callback>(actor_id(this));
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| }
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| 
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| void ValidatorGroup::create_session() {
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|   CHECK(!init_);
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|   init_ = true;
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|   std::vector<validatorsession::ValidatorSessionNode> vec;
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|   auto v = validator_set_->export_vector();
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|   bool found = false;
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|   for (auto &el : v) {
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|     validatorsession::ValidatorSessionNode n;
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|     n.pub_key = ValidatorFullId{el.key};
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|     n.weight = el.weight;
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|     if (n.pub_key.compute_short_id() == local_id_) {
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|       CHECK(!found);
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|       found = true;
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|       local_id_full_ = n.pub_key;
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|     }
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|     if (el.addr.is_zero()) {
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|       n.adnl_id = adnl::AdnlNodeIdShort{n.pub_key.compute_short_id()};
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|     } else {
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|       n.adnl_id = adnl::AdnlNodeIdShort{el.addr};
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|     }
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|     vec.emplace_back(std::move(n));
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|   }
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|   CHECK(found);
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| 
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|   if (!config_.new_catchain_ids) {
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|     session_ = validatorsession::ValidatorSession::create(session_id_, config_, local_id_, std::move(vec),
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|                                                           make_validator_session_callback(), keyring_, adnl_, rldp_,
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|                                                           overlays_, db_root_, "-", allow_unsafe_self_blocks_resync_);
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|   } else {
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|     session_ = validatorsession::ValidatorSession::create(
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|         session_id_, config_, local_id_, std::move(vec), make_validator_session_callback(), keyring_, adnl_, rldp_,
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|         overlays_, db_root_ + "/catchains/",
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|         PSTRING() << "." << shard_.workchain << "." << shard_.shard << "." << validator_set_->get_catchain_seqno()
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|                   << ".",
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|         allow_unsafe_self_blocks_resync_);
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|   }
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|   if (opts_->get_catchain_max_block_delay()) {
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|     td::actor::send_closure(session_, &validatorsession::ValidatorSession::set_catchain_max_block_delay,
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|                             opts_->get_catchain_max_block_delay().value());
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|   }
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|   if (started_) {
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|     td::actor::send_closure(session_, &validatorsession::ValidatorSession::start);
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|   }
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| }
 | |
| 
 | |
| void ValidatorGroup::start(std::vector<BlockIdExt> prev, BlockIdExt min_masterchain_block_id, UnixTime min_ts) {
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|   prev_block_ids_ = prev;
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|   min_masterchain_block_id_ = min_masterchain_block_id;
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|   min_ts_ = min_ts;
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|   cached_collated_block_ = nullptr;
 | |
|   approved_candidates_cache_.clear();
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|   started_ = true;
 | |
| 
 | |
|   if (init_) {
 | |
|     td::actor::send_closure(session_, &validatorsession::ValidatorSession::start);
 | |
|   }
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| 
 | |
|   for (auto &p : postponed_accept_) {
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|     auto next_block_id = create_next_block_id(p.root_hash, p.file_hash);
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|     td::actor::send_closure(manager_, &ValidatorManager::log_validator_session_stats, next_block_id,
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|                             std::move(p.stats));
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| 
 | |
|     auto block =
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|         p.block.size() > 0 ? create_block(next_block_id, std::move(p.block)).move_as_ok() : td::Ref<BlockData>{};
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|     retry_accept_block_query(next_block_id, std::move(block), prev_block_ids_, std::move(p.sigs),
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|                              std::move(p.approve_sigs), false, std::move(p.promise));
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|     prev_block_ids_ = std::vector<BlockIdExt>{next_block_id};
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|   }
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|   postponed_accept_.clear();
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| 
 | |
|   validatorsession::NewValidatorGroupStats stats;
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|   stats.session_id = session_id_;
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|   stats.shard = shard_;
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|   stats.cc_seqno = validator_set_->get_catchain_seqno();
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|   stats.timestamp = td::Clocks::system();
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|   td::uint32 idx = 0;
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|   for (const auto& node : validator_set_->export_vector()) {
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|     PublicKeyHash id = ValidatorFullId{node.key}.compute_short_id();
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|     if (id == local_id_) {
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|       stats.self_idx = idx;
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|     }
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|     stats.nodes.push_back(validatorsession::NewValidatorGroupStats::Node{id, node.weight});
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|     ++idx;
 | |
|   }
 | |
|   td::actor::send_closure(manager_, &ValidatorManager::log_new_validator_group_stats, std::move(stats));
 | |
| }
 | |
| 
 | |
| void ValidatorGroup::destroy() {
 | |
|   if (!session_.empty()) {
 | |
|     td::actor::send_closure(session_, &validatorsession::ValidatorSession::get_current_stats,
 | |
|                             [manager = manager_, cc_seqno = validator_set_->get_catchain_seqno(),
 | |
|                              block_id = create_next_block_id(RootHash::zero(), FileHash::zero())](
 | |
|                                 td::Result<validatorsession::ValidatorSessionStats> R) {
 | |
|                               if (R.is_error()) {
 | |
|                                 LOG(WARNING) << "Failed to get validator session stats: " << R.move_as_error();
 | |
|                                 return;
 | |
|                               }
 | |
|                               auto stats = R.move_as_ok();
 | |
|                               if (stats.rounds.empty()) {
 | |
|                                 return;
 | |
|                               }
 | |
|                               stats.cc_seqno = cc_seqno;
 | |
|                               td::actor::send_closure(manager, &ValidatorManager::log_validator_session_stats, block_id,
 | |
|                                                       std::move(stats));
 | |
|                             });
 | |
|     auto ses = session_.release();
 | |
|     delay_action([ses]() mutable { td::actor::send_closure(ses, &validatorsession::ValidatorSession::destroy); },
 | |
|                  td::Timestamp::in(10.0));
 | |
|   }
 | |
|   stop();
 | |
| }
 | |
| 
 | |
| void ValidatorGroup::get_validator_group_info_for_litequery(
 | |
|     td::Promise<tl_object_ptr<lite_api::liteServer_nonfinal_validatorGroupInfo>> promise) {
 | |
|   if (session_.empty()) {
 | |
|     promise.set_error(td::Status::Error(ErrorCode::notready, "not started"));
 | |
|     return;
 | |
|   }
 | |
|   td::actor::send_closure(
 | |
|       session_, &validatorsession::ValidatorSession::get_validator_group_info_for_litequery, last_known_round_id_,
 | |
|       [SelfId = actor_id(this), promise = std::move(promise), round = last_known_round_id_](
 | |
|           td::Result<std::vector<tl_object_ptr<lite_api::liteServer_nonfinal_candidateInfo>>> R) mutable {
 | |
|         TRY_RESULT_PROMISE(promise, result, std::move(R));
 | |
|         td::actor::send_closure(SelfId, &ValidatorGroup::get_validator_group_info_for_litequery_cont, round,
 | |
|                                 std::move(result), std::move(promise));
 | |
|       });
 | |
| }
 | |
| 
 | |
| void ValidatorGroup::get_validator_group_info_for_litequery_cont(
 | |
|     td::uint32 expected_round, std::vector<tl_object_ptr<lite_api::liteServer_nonfinal_candidateInfo>> candidates,
 | |
|     td::Promise<tl_object_ptr<lite_api::liteServer_nonfinal_validatorGroupInfo>> promise) {
 | |
|   if (expected_round != last_known_round_id_) {
 | |
|     candidates.clear();
 | |
|   }
 | |
| 
 | |
|   BlockId next_block_id = create_next_block_id_simple();
 | |
|   for (auto &candidate : candidates) {
 | |
|     BlockIdExt id{next_block_id, candidate->id_->block_id_->root_hash_, candidate->id_->block_id_->file_hash_};
 | |
|     candidate->id_->block_id_ = create_tl_lite_block_id(id);
 | |
|     candidate->available_ =
 | |
|         available_block_candidates_.count({candidate->id_->creator_, id, candidate->id_->collated_data_hash_});
 | |
|   }
 | |
| 
 | |
|   auto result = create_tl_object<lite_api::liteServer_nonfinal_validatorGroupInfo>();
 | |
|   result->next_block_id_ = create_tl_lite_block_id_simple(next_block_id);
 | |
|   for (const BlockIdExt& prev : prev_block_ids_) {
 | |
|     result->prev_.push_back(create_tl_lite_block_id(prev));
 | |
|   }
 | |
|   result->cc_seqno_ = validator_set_->get_catchain_seqno();
 | |
|   result->candidates_ = std::move(candidates);
 | |
|   promise.set_result(std::move(result));
 | |
| }
 | |
| 
 | |
| }  // namespace validator
 | |
| 
 | |
| }  // namespace ton
 |