def debug_find_diff_chain_head_hash_between_historical_root_hashes():
# this is from bootnode 1
historical_root_hash_time_1 = 1564233000
historical_root_hash_time_2 = 1564234000
testdb_before = LevelDB(
"/home/tommy/.local/share/helios/mainnet/chain/full_before_rebuild/")
testdb_after = LevelDB(
"/home/tommy/.local/share/helios/mainnet/chain/full/")
#testdb = LevelDB("/home/tommy/.local/share/helios/bootnode_1_july_30/mainnet/chain/full/")
testdb_before = JournalDB(testdb_before)
testdb_after = JournalDB(testdb_after)
#testdb = ReadOnlyDB(testdb)
chain_before = MainnetChain(
testdb_before, private_keys[0].public_key.to_canonical_address(),
private_keys[0])
chain_after = MainnetChain(
testdb_after, private_keys[0].public_key.to_canonical_address(),
private_keys[0])
historical_root_hashes_before = chain_before.chain_head_db.get_historical_root_hashes(
)
historical_root_hashes_after = chain_after.chain_head_db.get_historical_root_hashes(
)
print(historical_root_hashes_before)
print(historical_root_hashes_after)
_print_chronological_blocks_and_actual_head_hash_diff(
chain_before, historical_root_hash_time_1, historical_root_hash_time_2)
def add_transactions_to_blockchain_db(base_db, tx_list: List):
# sort by time
tx_list.sort(key=lambda x: x[3])
for tx_key in tx_list:
sender_priv_key = tx_key[0]
receive_priv_key = tx_key[1]
amount = tx_key[2]
tx_timestamp = int(tx_key[3])
if len(tx_key) > 4:
gas_price = to_wei(tx_key[4], 'gwei')
else:
gas_price = to_wei(1, 'gwei')
total_gas = gas_price
sender_chain = TestnetChain(base_db, sender_priv_key.public_key.to_canonical_address(), sender_priv_key)
dummy_sender_chain = TestnetChain(JournalDB(base_db), sender_priv_key.public_key.to_canonical_address(),
sender_priv_key)
dummy_sender_chain.create_and_sign_transaction_for_queue_block(
gas_price=gas_price,
gas=GAS_TX,
to=receive_priv_key.public_key.to_canonical_address(),
value=amount,
data=b"",
v=0,
r=0,
s=0
)
# import the block into the dummy chain to complete it and make sure it is valid
imported_block = dummy_sender_chain.import_current_queue_block()
# altering block timestamp and importing again
timestamp_modified_imported_block = imported_block.copy(
header=imported_block.header.copy(timestamp=tx_timestamp).get_signed(sender_priv_key,
dummy_sender_chain.network_id))
sender_chain.import_block(timestamp_modified_imported_block, allow_unprocessed=False)
# then receive the transactions
dummy_receiver_chain = TestnetChain(JournalDB(base_db), receive_priv_key.public_key.to_canonical_address(),
receive_priv_key)
dummy_receiver_chain.populate_queue_block_with_receive_tx()
imported_block = dummy_receiver_chain.import_current_queue_block()
# altering block timestamp and importing again
timestamp_modified_imported_block = imported_block.copy(
header=imported_block.header.copy(timestamp=tx_timestamp).get_signed(receive_priv_key,
dummy_receiver_chain.network_id))
# print('XXXXXXXXXX')
# print(tx_timestamp)
receiver_chain = TestnetChain(base_db, receive_priv_key.public_key.to_canonical_address(), receive_priv_key)
receiver_chain.import_block(timestamp_modified_imported_block, allow_unprocessed=False)
def __init__(self, db, state_root=BLANK_ROOT_HASH):
r"""
Internal implementation details (subject to rapid change):
Database entries go through several pipes, like so...
.. code::
-> hash-trie -> storage lookups
/
db > _batchdb ---------------------------> _journaldb ----------------> code lookups
\
-> _batchtrie -> _trie -> _trie_cache -> _journaltrie --------------> account lookups
Journaling sequesters writes at the _journal* attrs ^, until persist is called.
_batchtrie enables us to prune all trie changes while building
state, without deleting old trie roots.
_batchdb and _batchtrie together enable us to make the state root,
without saving everything to the database.
_journaldb is a journaling of the keys and values used to store
code and account storage.
_trie is a hash-trie, used to generate the state root
_trie_cache is a cache tied to the state root of the trie. It
is important that this cache is checked *after* looking for
the key in _journaltrie, because the cache is only invalidated
after a state root change.
_journaltrie is a journaling of the accounts (an address->rlp_templates mapping,
rather than the nodes stored by the trie). This enables
a squashing of all account changes before pushing them into the trie.
.. NOTE:: There is an opportunity to do something similar for storage
AccountDB synchronizes the snapshot/revert/persist of both of the
journals.
"""
self.db = db
self._batchdb = BatchDB(db)
self._batchtrie = BatchDB(db)
self._journaldb = JournalDB(self._batchdb)
self._trie = HashTrie(
HexaryTrie(self._batchtrie, state_root, prune=True))
self._trie_cache = CacheDB(self._trie)
self._journaltrie = JournalDB(self._trie_cache)
def db(request):
base_db = MemoryDB()
if request.param is JournalDB:
return JournalDB(base_db)
elif request.param is BatchDB:
return BatchDB(base_db)
elif request.param is MemoryDB:
return base_db
else:
raise Exception("Invariant")
def __init__(self, db):
r"""
Internal implementation details (subject to rapid change):
Journaling sequesters writes at the _journal* attrs ^, until persist is called.
_batchdb and _batchtrie together enable us to make the state root,
without saving everything to the database.
_journaldb is a journaling of the keys and values used to store
code and account storage.
TODO: add cache
_trie_cache is a cache tied to the state root of the trie. It
is important that this cache is checked *after* looking for
the key in _journaltrie, because the cache is only invalidated
after a state root change.
AccountDB synchronizes the snapshot/revert/persist the
journal.
"""
self.db = db
self._batchdb = BatchDB(db)
self._journaldb = JournalDB(self._batchdb)
def create_valid_block_at_timestamp(base_db, private_key, transactions = None, receive_transactions = None, reward_bundle = None, timestamp = None):
'''
Tries to create a valid block based in the invalid block. The transactions and reward bundle must already be valid
:param base_db:
:param private_key:
:param invalid_block:
:return:
'''
if timestamp == None:
timestamp = int(time.time())
chain = TestnetChain(JournalDB(base_db), private_key.public_key.to_canonical_address(), private_key)
queue_block = chain.get_queue_block()
queue_block = queue_block.copy(header = queue_block.header.copy(timestamp = timestamp),
transactions=transactions,
receive_transactions=receive_transactions,
reward_bundle=reward_bundle)
valid_block = chain.get_vm(timestamp = timestamp).import_block(queue_block, validate = False, private_key = chain.private_key)
return valid_block
from hvm.db.backends.level import LevelDB
from hvm.db.journal import JournalDB
def fix_blockchain_database_errors(base_db):
'''
Checks to make sure all chains match what is expected from saved chain head root hash
:param base_db:
:return:
'''
node_1 = MainnetChain(
base_db,
GENESIS_PRIVATE_KEY_FOR_TESTNET.public_key.to_canonical_address(),
GENESIS_PRIVATE_KEY_FOR_TESTNET)
chain_head_hashes = node_1.chain_head_db.get_head_block_hashes_list()
for head_hash in chain_head_hashes:
address = node_1.chaindb.get_chain_wallet_address_for_block_hash(
head_hash)
# make sure the head block matches the expected head_hash
chain_head_header = node_1.chaindb.get_canonical_head_hash(address)
if chain_head_header != head_hash:
print('f**k')
exit()
base_db = JournalDB(
LevelDB('/home/tommy/.local/share/helios/instance_0/chain'))
fix_blockchain_database_errors(base_db)
def create_dev_fixed_blockchain_database(base_db, key_balance_dict, use_real_genesis = False):
logger.debug("generating test fixed blockchain db")
earliest_timestamp = int(time.time())
required_total_supply = 0
for balance_timestamp in key_balance_dict.values():
required_total_supply += balance_timestamp[0]
if balance_timestamp[1] < earliest_timestamp:
earliest_timestamp = balance_timestamp[1]
required_total_supply = required_total_supply*2
#initialize db
if use_real_genesis:
sender_chain = import_genesis_block(base_db)
else:
genesis_params, genesis_state = create_new_genesis_params_and_state(TESTNET_GENESIS_PRIVATE_KEY, required_total_supply, earliest_timestamp - 100000)
sender_chain = TestnetChain.from_genesis(base_db, TESTNET_GENESIS_PRIVATE_KEY.public_key.to_canonical_address(), genesis_params, genesis_state)
sender_chain.chaindb.initialize_historical_minimum_gas_price_at_genesis(min_gas_price=1, net_tpc_cap=5)
prev_timestamp = 0
for priv_key, balance_timestamp in key_balance_dict.items():
sender_chain = TestnetChain(base_db, TESTNET_GENESIS_PRIVATE_KEY.public_key.to_canonical_address(), TESTNET_GENESIS_PRIVATE_KEY)
dummy_sender_chain = TestnetChain(JournalDB(base_db), TESTNET_GENESIS_PRIVATE_KEY.public_key.to_canonical_address(), TESTNET_GENESIS_PRIVATE_KEY)
balance = balance_timestamp[0]
timestamp = balance_timestamp[1]
if timestamp < prev_timestamp:
raise ValueError("timestamps must be in ascending order")
receiver_privkey = priv_key
dummy_sender_chain.create_and_sign_transaction_for_queue_block(
gas_price=0x01,
gas=0x0c3500,
to=receiver_privkey.public_key.to_canonical_address(),
value=balance,
data=b"",
v=0,
r=0,
s=0
)
# import the block into the dummy chain to complete it and make sure it is valid
imported_block = dummy_sender_chain.import_current_queue_block()
# altering block timestamp and importing again
timestamp_modified_imported_block = imported_block.copy(header = imported_block.header.copy(timestamp = timestamp).get_signed(TESTNET_GENESIS_PRIVATE_KEY, dummy_sender_chain.network_id))
sender_chain.import_block(timestamp_modified_imported_block, allow_unprocessed = False)
#logger.debug("Receiving ")
#then receive the transactions
receiver_chain = TestnetChain(base_db, receiver_privkey.public_key.to_canonical_address(), receiver_privkey)
dummy_receiver_chain = TestnetChain(JournalDB(base_db), receiver_privkey.public_key.to_canonical_address(), receiver_privkey)
dummy_receiver_chain.populate_queue_block_with_receive_tx()
imported_block = dummy_receiver_chain.import_current_queue_block()
# altering block timestamp and importing again
timestamp_modified_imported_block = imported_block.copy(header=imported_block.header.copy(timestamp=timestamp).get_signed(receiver_privkey, dummy_receiver_chain.network_id))
receiver_chain.import_block(timestamp_modified_imported_block, allow_unprocessed=False)
logger.debug("finished creating fixed blockchain")
def debug_test_1():
testdb = LevelDB("/home/tommy/.local/share/helios/mainnet/chain/full/")
testdb = JournalDB(testdb)
testdb = ReadOnlyDB(testdb)
chain = MainnetChain(testdb,
private_keys[0].public_key.to_canonical_address(),
private_keys[0])
block = chain.get_block_by_hash(
decode_hex(
'0x6a8d49885e5f07ea66f722e4ec9ba9630a86f1189257317461196726bee7ea0c'
))
new_chain = chain.get_blocks_on_chain(
0, 3, decode_hex('0x1d1a2266a15CcB2e70baeB4b75b2c59Da95498ac'))
print('blocks on chain')
for cur_block in new_chain:
print(encode_hex(cur_block.header.hash))
print()
newest_root_hash = chain.chain_head_db.get_historical_root_hashes()[-1][1]
chain.chain_head_db.root_hash = newest_root_hash
chain_head_hash = chain.chain_head_db.get_chain_head_hash(
decode_hex('0x1d1a2266a15CcB2e70baeB4b75b2c59Da95498ac'))
print("chain_head_hash {}".format(encode_hex(chain_head_hash)))
#
# now lets delete all but the first block
#
print("Deleting all blocks but first")
chain = MainnetChain(testdb,
private_keys[0].public_key.to_canonical_address(),
private_keys[0])
chain.purge_block_and_all_children_and_set_parent_as_chain_head(
block.header, save_block_head_hash_timestamp=True)
newest_root_hash = chain.chain_head_db.get_historical_root_hashes()[-1][1]
chain.chain_head_db.root_hash = newest_root_hash
chain_head_hash = chain.chain_head_db.get_chain_head_hash(
decode_hex('0x1d1a2266a15CcB2e70baeB4b75b2c59Da95498ac'))
print("chain_head_hash {}".format(encode_hex(chain_head_hash)))
#
# Now lets import the second block again
#
print("Importing second block")
chain.import_block(
block,
allow_replacement=False,
ensure_block_unchanged=True,
)
newest_root_hash = chain.chain_head_db.get_historical_root_hashes()[-1][1]
chain.chain_head_db.root_hash = newest_root_hash
chain_head_hash = chain.chain_head_db.get_chain_head_hash(
decode_hex('0x1d1a2266a15CcB2e70baeB4b75b2c59Da95498ac'))
print("chain_head_hash {}".format(encode_hex(chain_head_hash)))
def journal_db(memory_db):
return JournalDB(memory_db)