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ton/validator/downloaders/download-state.cpp

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2019-09-07 12:03:22 +02:00
/*
This file is part of TON Blockchain Library.
TON Blockchain Library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
TON Blockchain Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with TON Blockchain Library. If not, see <http://www.gnu.org/licenses/>.
Copyright 2017-2019 Telegram Systems LLP
*/
#include "download-state.hpp"
#include "validator/fabric.h"
#include "common/checksum.h"
#include "common/delay.h"
#include "ton/ton-io.hpp"
namespace ton {
namespace validator {
DownloadShardState::DownloadShardState(BlockIdExt block_id, BlockIdExt masterchain_block_id, td::uint32 priority,
td::actor::ActorId<ValidatorManager> manager, td::Timestamp timeout,
td::Promise<td::Ref<ShardState>> promise)
: block_id_(block_id)
, masterchain_block_id_(masterchain_block_id)
, priority_(priority)
, manager_(manager)
, timeout_(timeout)
, promise_(std::move(promise)) {
}
void DownloadShardState::start_up() {
alarm_timestamp() = timeout_;
auto P = td::PromiseCreator::lambda([SelfId = actor_id(this)](td::Result<BlockHandle> R) {
R.ensure();
td::actor::send_closure(SelfId, &DownloadShardState::got_block_handle, R.move_as_ok());
});
td::actor::send_closure(manager_, &ValidatorManager::get_block_handle, block_id_, true, std::move(P));
}
void DownloadShardState::got_block_handle(BlockHandle handle) {
handle_ = std::move(handle);
download_state();
}
void DownloadShardState::retry() {
download_state();
}
void DownloadShardState::download_state() {
if (handle_->id().seqno() == 0 || handle_->inited_proof() || handle_->inited_proof_link()) {
checked_proof_link();
return;
}
auto P = td::PromiseCreator::lambda([SelfId = actor_id(this)](td::Result<td::BufferSlice> R) {
if (R.is_error()) {
fail_handler(SelfId, R.move_as_error());
} else {
td::actor::send_closure(SelfId, &DownloadShardState::downloaded_proof_link, R.move_as_ok());
}
});
td::actor::send_closure(manager_, &ValidatorManager::send_get_block_proof_link_request, block_id_, priority_,
std::move(P));
}
void DownloadShardState::downloaded_proof_link(td::BufferSlice data) {
auto pp = create_proof_link(block_id_, std::move(data));
if (pp.is_error()) {
fail_handler(actor_id(this), pp.move_as_error());
return;
}
auto P = td::PromiseCreator::lambda([SelfId = actor_id(this)](td::Result<BlockHandle> R) {
if (R.is_error()) {
fail_handler(SelfId, R.move_as_error());
} else {
td::actor::send_closure(SelfId, &DownloadShardState::checked_proof_link);
}
});
run_check_proof_link_query(block_id_, pp.move_as_ok(), manager_, td::Timestamp::in(60.0), std::move(P));
}
void DownloadShardState::checked_proof_link() {
if (block_id_.seqno() == 0) {
auto P = td::PromiseCreator::lambda([SelfId = actor_id(this)](td::Result<td::BufferSlice> R) {
if (R.is_error()) {
td::actor::send_closure(SelfId, &DownloadShardState::download_zero_state);
} else {
td::actor::send_closure(SelfId, &DownloadShardState::downloaded_zero_state, R.move_as_ok());
}
});
td::actor::send_closure(manager_, &ValidatorManager::try_get_static_file, block_id_.file_hash, std::move(P));
} else {
auto P = td::PromiseCreator::lambda([SelfId = actor_id(this)](td::Result<td::BufferSlice> R) {
if (R.is_error()) {
fail_handler(SelfId, R.move_as_error());
} else {
td::actor::send_closure(SelfId, &DownloadShardState::downloaded_shard_state, R.move_as_ok());
}
});
CHECK(masterchain_block_id_.is_valid());
CHECK(masterchain_block_id_.is_masterchain());
td::actor::send_closure(manager_, &ValidatorManager::send_get_persistent_state_request, block_id_,
masterchain_block_id_, priority_, std::move(P));
}
}
void DownloadShardState::download_zero_state() {
auto P = td::PromiseCreator::lambda([SelfId = actor_id(this)](td::Result<td::BufferSlice> R) {
if (R.is_error()) {
fail_handler(SelfId, R.move_as_error());
} else {
td::actor::send_closure(SelfId, &DownloadShardState::downloaded_zero_state, R.move_as_ok());
}
});
td::actor::send_closure(manager_, &ValidatorManager::send_get_zero_state_request, block_id_, priority_, std::move(P));
}
void DownloadShardState::downloaded_zero_state(td::BufferSlice data) {
if (sha256_bits256(data.as_slice()) != block_id_.file_hash) {
fail_handler(actor_id(this), td::Status::Error(ErrorCode::protoviolation, "bad zero state: file hash mismatch"));
return;
}
data_ = std::move(data);
auto S = create_shard_state(block_id_, data_.clone());
S.ensure();
state_ = S.move_as_ok();
CHECK(state_->root_hash() == block_id_.root_hash);
checked_shard_state();
}
void DownloadShardState::downloaded_shard_state(td::BufferSlice data) {
auto S = create_shard_state(block_id_, data.clone());
if (S.is_error()) {
fail_handler(actor_id(this), S.move_as_error());
return;
}
auto state = S.move_as_ok();
if (state->root_hash() != handle_->state()) {
fail_handler(actor_id(this),
td::Status::Error(ErrorCode::protoviolation, "bad persistent state: root hash mismatch"));
return;
}
auto St = state->validate_deep();
if (St.is_error()) {
fail_handler(actor_id(this), St.move_as_error());
return;
}
state_ = std::move(state);
data_ = data.clone();
checked_shard_state();
}
void DownloadShardState::checked_shard_state() {
auto P = td::PromiseCreator::lambda([SelfId = actor_id(this)](td::Result<td::Unit> R) {
R.ensure();
td::actor::send_closure(SelfId, &DownloadShardState::written_shard_state_file);
});
if (block_id_.seqno() == 0) {
td::actor::send_closure(manager_, &ValidatorManager::store_zero_state_file, block_id_, std::move(data_),
std::move(P));
} else {
td::actor::send_closure(manager_, &ValidatorManager::store_persistent_state_file, block_id_, masterchain_block_id_,
std::move(data_), std::move(P));
}
}
void DownloadShardState::written_shard_state_file() {
auto P = td::PromiseCreator::lambda([SelfId = actor_id(this)](td::Result<td::Ref<ShardState>> R) {
R.ensure();
td::actor::send_closure(SelfId, &DownloadShardState::written_shard_state, R.move_as_ok());
});
td::actor::send_closure(manager_, &ValidatorManager::set_block_state, handle_, std::move(state_), std::move(P));
}
void DownloadShardState::written_shard_state(td::Ref<ShardState> state) {
state_ = std::move(state);
handle_->set_unix_time(state_->get_unix_time());
handle_->set_is_key_block(block_id_.is_masterchain());
handle_->set_logical_time(state_->get_logical_time());
handle_->set_applied();
handle_->set_split(state_->before_split());
auto P = td::PromiseCreator::lambda([SelfId = actor_id(this)](td::Result<td::Unit> R) {
R.ensure();
td::actor::send_closure(SelfId, &DownloadShardState::written_block_handle);
});
handle_->flush(manager_, handle_, std::move(P));
}
void DownloadShardState::written_block_handle() {
finish_query();
}
void DownloadShardState::finish_query() {
if (promise_) {
promise_.set_value(std::move(state_));
}
stop();
}
void DownloadShardState::alarm() {
abort_query(td::Status::Error(ErrorCode::timeout, "timeout"));
}
void DownloadShardState::abort_query(td::Status reason) {
if (promise_) {
promise_.set_error(std::move(reason));
}
stop();
}
void DownloadShardState::fail_handler(td::actor::ActorId<DownloadShardState> SelfId, td::Status error) {
LOG(WARNING) << "failed to download state : " << error;
delay_action([=]() { td::actor::send_closure(SelfId, &DownloadShardState::retry); }, td::Timestamp::in(1.0));
}
} // namespace validator
} // namespace ton