void bdb_blockchain::do_fetch_outputs(const payment_address& address,
fetch_handler_outputs handle_fetch)
{
// Associated outputs
message::output_point_list assoc_outs;
txn_guard_ptr txn = std::make_shared<txn_guard>(env_);
Dbc* cursor;
db_address_->cursor(txn->get(), &cursor, 0);
BITCOIN_ASSERT(cursor != nullptr);
readable_data_type key;
// version byte + hash for key
serializer serial;
serial.write_byte(address.version());
serial.write_short_hash(address.hash());
key.set(serial.data());
writable_data_type value;
int ret = cursor->get(key.get(), value.get(), DB_SET);
while (ret != DB_NOTFOUND)
{
message::output_point outpoint;
// We need a copy not a temporary
data_chunk raw_outpoint(value.data());
// Then read the value off
deserializer deserial(raw_outpoint);
outpoint.hash = deserial.read_hash();
outpoint.index = deserial.read_4_bytes();
assoc_outs.push_back(outpoint);
ret = cursor->get(key.get(), value.get(), DB_NEXT_DUP);
}
cursor->close();
txn->commit();
handle_fetch(std::error_code(), assoc_outs);
}
RD_ByteArray *bytearray_load(const void *source)
{
RA_Array size = deserial(*(RA_Array*)source);
RD_ByteArray *a = bytearray_new(size);
memcpy(a + 1, (RA_Array*)source + 1, size);
return a;
}
bool bdb_common::fetch_spend(txn_guard_ptr txn,
const message::output_point& spent_output,
message::input_point& input_spend)
{
readable_data_type search_spend;
search_spend.set(create_spent_key(spent_output));
writable_data_type raw_spend;
if (db_spends_->get(txn->get(), search_spend.get(),
raw_spend.get(), 0) != 0)
return false;
const data_chunk raw_spend_data = raw_spend.data();
deserializer deserial(raw_spend_data);
input_spend.hash = deserial.read_hash();
input_spend.index = deserial.read_4_bytes();
return true;
}
