bool leveldb_chain_keeper::end_slice(size_t slice_begin_index,
block_detail_list& sliced_blocks)
{
leveldb_transaction_batch batch;
leveldb_iterator it(db_.block->NewIterator(leveldb::ReadOptions()));
data_chunk raw_depth = uncast_type(slice_begin_index);
for (it->Seek(slice(raw_depth)); it->Valid(); it->Next())
{
block_detail_ptr sliced_block =
reconstruct_block(common_, it->value().ToString());
if (!sliced_block)
return false;
// Add to list of sliced blocks
sliced_blocks.push_back(sliced_block);
// Make sure to delete hash secondary index too.
const hash_digest& block_hash = sliced_block->hash();
// Delete block header...
batch.block.Delete(it->key());
// And it's secondary index.
batch.block_hash.Delete(slice_block_hash(block_hash));
// Remove txs + spends + addresses too
const auto& transactions = sliced_block->actual().transactions;
for (const transaction_type& block_tx: transactions)
if (!clear_transaction_data(batch, block_tx))
return false;
}
leveldb::WriteOptions options;
// Execute batches.
db_.write(batch);
return true;
}
uint32_t leveldb_common::get_block_height(const hash_digest& block_hash)
{
std::string value;
leveldb::Status status = db_.block_hash->Get(
leveldb::ReadOptions(), slice_block_hash(block_hash), &value);
if (status.IsNotFound())
return std::numeric_limits<uint32_t>::max();
else if (!status.ok())
{
log_fatal(LOG_BLOCKCHAIN) << "fetch_block_height("
<< block_hash << "): " << status.ToString();
return std::numeric_limits<uint32_t>::max();
}
return recreate_height(value);
}
bool leveldb_common::save_block(
uint32_t height, const block_type& serial_block)
{
leveldb_transaction_batch batch;
// Write block header + tx hashes
data_chunk raw_block_data(
80 + 4 + serial_block.transactions.size() * hash_digest_size);
// Downcast to base header type so serializer selects that.
auto header_end = satoshi_save(
serial_block.header, raw_block_data.begin());
BITCOIN_ASSERT(std::distance(raw_block_data.begin(), header_end) == 80);
auto serial_hashes = make_serializer(header_end);
// Write the number of transactions...
serial_hashes.write_4_bytes(serial_block.transactions.size());
// ... And now the tx themselves.
for (uint32_t tx_index = 0;
tx_index < serial_block.transactions.size(); ++tx_index)
{
const transaction_type& block_tx =
serial_block.transactions[tx_index];
const hash_digest& tx_hash = hash_transaction(block_tx);
if (!save_transaction(batch, height, tx_index, tx_hash, block_tx))
{
log_fatal(LOG_BLOCKCHAIN) << "Could not save transaction";
return false;
}
serial_hashes.write_hash(tx_hash);
}
BITCOIN_ASSERT(serial_hashes.iterator() ==
raw_block_data.begin() + 80 + 4 +
serial_block.transactions.size() * hash_digest_size);
data_chunk raw_height = uncast_type(height);
hash_digest block_hash = hash_block_header(serial_block.header);
// Write block header
batch.block.Put(slice(raw_height), slice(raw_block_data));
batch.block_hash.Put(slice_block_hash(block_hash), slice(raw_height));
// Execute batches.
db_.write(batch);
// Sync stealth database.
db_stealth_->sync(height);
return true;
}
bool leveldb_chain_keeper::end_slice(size_t slice_begin_index,
block_detail_list& sliced_blocks)
{
leveldb::WriteBatch blk_batch, blk_hash_batch;
leveldb_transaction_batch tx_batch;
leveldb_iterator it(db_blocks_->NewIterator(leveldb::ReadOptions()));
data_chunk raw_depth = uncast_type(slice_begin_index);
for (it->Seek(slice(raw_depth)); it->Valid(); it->Next())
{
std::stringstream ss;
ss.str(it->value().ToString());
protobuf::Block proto_block;
proto_block.ParseFromIstream(&ss);
// Convert protobuf block header into actual block
block_type sliced_block;
if (!reconstruct_block(common_, proto_block, sliced_block))
return false;
// Add to list of sliced blocks
block_detail_ptr sliced_detail =
std::make_shared<block_detail>(sliced_block);
sliced_blocks.push_back(sliced_detail);
// Make sure to delete hash secondary index too.
hash_digest block_hash = hash_block_header(sliced_block);
// Delete block header...
blk_batch.Delete(it->key());
// And it's secondary index.
blk_hash_batch.Delete(slice_block_hash(block_hash));
// Remove txs + spends + addresses too
for (const transaction_type& block_tx: sliced_block.transactions)
if (!clear_transaction_data(tx_batch, block_tx))
return false;
}
leveldb::WriteOptions options;
// Execute batches.
db_blocks_->Write(options, &blk_batch);
db_blocks_hash_->Write(options, &blk_hash_batch);
db_txs_->Write(options, &tx_batch.tx_batch);
db_spends_->Write(options, &tx_batch.spends_batch);
db_address_->Write(options, &tx_batch.address_batch);
return true;
}