def get_bigchain(conf=CONFIG_FILE, ledger_id=None):
if os.path.isfile(conf):
bigchaindb.config_utils.autoconfigure(filename=conf, force=True)
if ledger_id is not None:
return bigchaindb.Bigchain(dbname='bigchaindb_examples_{}'.format(ledger_id))
else:
return bigchaindb.Bigchain()
def validate_fulfillments(signed_transaction):
"""Verify the signature of a transaction
A valid transaction should have been signed `current_owner` corresponding private key.
Args:
signed_transaction (dict): a transaction with the `signature` included.
Returns:
bool: True if the signature is correct, False otherwise.
"""
for fulfillment in signed_transaction['transaction']['fulfillments']:
fulfillment_message = get_fulfillment_message(signed_transaction,
fulfillment)
try:
parsed_fulfillment = cc.Fulfillment.from_uri(
fulfillment['fulfillment'])
except (TypeError, ValueError, ParsingError):
return False
# TODO: might already break on a False here
is_valid = parsed_fulfillment.validate(
message=serialize(fulfillment_message), now=timestamp())
# if transaction has an input (i.e. not a `CREATE` transaction)
# TODO: avoid instantiation, pass as argument!
bigchain = bigchaindb.Bigchain()
input_condition = get_input_condition(bigchain, fulfillment)
is_valid = is_valid and parsed_fulfillment.condition_uri == input_condition[
'condition']['uri']
if not is_valid:
return False
return True
def init():
""" init leveldb database by conn"""
logger.info('leveldb init...')
conn_bigchain = get_conn('bigchain')
conn_header = get_conn('header')
logger.info('leveldb init...')
logger.info('leveldb/header init...')
logger.info('leveldb/header init host...' +
str(bigchaindb.config['database']['host']))
logger.info('leveldb/header init public_key...' +
str(bigchaindb.config['keypair']['public']))
logger.info('leveldb/header init private_key...' +
str(bigchaindb.config['keypair']['private']))
update(conn_header, 'host', bigchaindb.config['database']['host'])
update(conn_header, 'public_key', bigchaindb.config['keypair']['public'])
update(conn_header, 'private_key', bigchaindb.config['keypair']['private'])
block_num = int(get_withdefault(conn_header, 'block_num', 0))
genesis_block_id = get_withdefault(conn_header, 'genesis_block_id', '0')
if block_num == 0:
genesis_block = r.db('bigchain').table('bigchain').order_by(
r.asc(r.row['block']['timestamp'])).limit(1).run(
bigchaindb.Bigchain().conn)[0]
genesis_block_id = genesis_block['id']
insert(conn_bigchain, genesis_block_id, genesis_block)
insert(conn_header, 'genesis_block_id', genesis_block_id)
insert(conn_header, 'block_num', 1)
insert(conn_header, 'current_block_id', genesis_block_id)
logger.info('leveldb/header genesis_block_id...' + str(genesis_block_id))
logger.info('leveldb init done')
def _run_init():
# Try to access the keypair, throws an exception if it does not exist
b = bigchaindb.Bigchain()
schema.init_database(connection=b.connection)
b.create_genesis_block()
logger.info('Genesis block created.')
def init():
# Try to access the keypair, throws an exception if it does not exist
b = bigchaindb.Bigchain()
init_database()
logger.info('Create genesis block.')
b.create_genesis_block()
logger.info('Done, have fun!')
def test_bigchain_instance_raises_when_not_configured(monkeypatch):
from bigchaindb import config_utils
assert 'CONFIGURED' not in bigchaindb.config
# We need to disable ``bigchaindb.config_utils.autoconfigure`` to avoid reading
# from existing configurations
monkeypatch.setattr(config_utils, 'autoconfigure', lambda: 0)
with pytest.raises(bigchaindb.core.KeypairNotFoundException):
bigchaindb.Bigchain()
def run_set_replicas(args):
b = bigchaindb.Bigchain()
for table in ['bigchain', 'backlog', 'votes']:
# See https://www.rethinkdb.com/api/python/config/
table_config = r.table(table).config().run(b.conn)
num_shards = len(table_config['shards'])
try:
r.table(table).reconfigure(shards=num_shards,
replicas=args.num_replicas).run(b.conn)
except r.ReqlOpFailedError as e:
logger.warn(e)
def test_bigchain_instance_is_initialized_when_conf_provided():
from bigchaindb import config_utils
assert 'CONFIGURED' not in bigchaindb.config
config_utils.dict_config({'keypair': {'public': 'a', 'private': 'b'}})
assert bigchaindb.config['CONFIGURED'] is True
b = bigchaindb.Bigchain()
assert b.me
assert b.me_private
def sign_tx(transaction, signing_keys, bigchain=None):
"""Sign a transaction
A transaction signed with the `current_owner` corresponding private key.
Args:
transaction (dict): transaction to sign.
signing_keys (list): list of base58 encoded private keys to create the fulfillments of the transaction.
bigchain (obj): bigchain instance used to get the details of the previous transaction outputs. Useful
if the `Bigchain` instance was instantiated with parameters that override the config file.
Returns:
dict: transaction with the `fulfillment` fields populated.
"""
# validate sk
if not isinstance(signing_keys, list):
signing_keys = [signing_keys]
# create a mapping between sk and vk so that we can match the private key to the current_owners
key_pairs = {}
for sk in signing_keys:
signing_key = crypto.SigningKey(sk)
vk = signing_key.get_verifying_key().to_ascii().decode()
key_pairs[vk] = signing_key
tx = copy.deepcopy(transaction)
bigchain = bigchain if bigchain is not None else bigchaindb.Bigchain()
for fulfillment in tx['transaction']['fulfillments']:
fulfillment_message = get_fulfillment_message(transaction, fulfillment)
# TODO: avoid instantiation, pass as argument!
input_condition = get_input_condition(bigchain, fulfillment)
parsed_fulfillment = cc.Fulfillment.from_dict(
input_condition['condition']['details'])
# for the case in which the type of fulfillment is not covered by this method
parsed_fulfillment_signed = parsed_fulfillment
# single current owner
if isinstance(parsed_fulfillment, cc.Ed25519Fulfillment):
parsed_fulfillment_signed = fulfill_simple_signature_fulfillment(
fulfillment, parsed_fulfillment, fulfillment_message,
key_pairs)
# multiple current owners
elif isinstance(parsed_fulfillment, cc.ThresholdSha256Fulfillment):
parsed_fulfillment_signed = fulfill_threshold_signature_fulfillment(
fulfillment, parsed_fulfillment, fulfillment_message,
key_pairs)
signed_fulfillment = parsed_fulfillment_signed.serialize_uri()
fulfillment.update({'fulfillment': signed_fulfillment})
return tx
def init():
conn = get_conn()
dbname = bigchaindb.config['database']['name']
if r.db_list().contains(dbname).run(conn):
raise DatabaseAlreadyExistsException(
'Database `{}` already exists'.format(dbname))
logger.info('Create:')
logger.info(' - database `%s`', dbname)
try:
r.db_create(dbname).run(conn)
except r.ReqlOpFailedError as e:
logger.info(e.message)
return
logger.info(' - tables')
# create the tables
r.db(dbname).table_create('bigchain').run(conn)
r.db(dbname).table_create('backlog').run(conn)
logger.info(' - indexes')
# create the secondary indexes
# to order blocks by timestamp
r.db(dbname).table('bigchain').index_create(
'block_timestamp', r.row['block']['timestamp']).run(conn)
# to order blocks by block number
r.db(dbname).table('bigchain').index_create(
'block_number', r.row['block']['block_number']).run(conn)
# to order transactions by timestamp
r.db(dbname).table('backlog').index_create(
'transaction_timestamp', r.row['transaction']['timestamp']).run(conn)
# to query the bigchain for a transaction id
r.db(dbname).table('bigchain').index_create(
'transaction_id', r.row['block']['transactions']['id'],
multi=True).run(conn)
# compound index to read transactions from the backlog per assignee
r.db(dbname).table('backlog')\
.index_create('assignee__transaction_timestamp', [r.row['assignee'], r.row['transaction']['timestamp']])\
.run(conn)
# secondary index for payload hash
r.db(dbname).table('bigchain')\
.index_create('payload_hash', r.row['block']['transactions']['transaction']['data']['hash'], multi=True)\
.run(conn)
# wait for rethinkdb to finish creating secondary indexes
r.db(dbname).table('backlog').index_wait().run(conn)
r.db(dbname).table('bigchain').index_wait().run(conn)
logger.info(' - genesis block')
b = bigchaindb.Bigchain()
b.create_genesis_block()
logger.info('Done, have fun!')
def test_bigchain_instance_raises_when_not_configured(request, monkeypatch):
import bigchaindb
from bigchaindb import config_utils
from bigchaindb.common import exceptions
assert 'CONFIGURED' not in bigchaindb.config
# We need to disable ``bigchaindb.config_utils.autoconfigure`` to avoid reading
# from existing configurations
monkeypatch.setattr(config_utils, 'autoconfigure', lambda: 0)
with pytest.raises(exceptions.ConfigurationError):
bigchaindb.Bigchain()
def transform_create(tx):
"""Change the owner and signature for a ``CREATE`` transaction created by a node"""
# XXX: the next instruction opens a new connection to the DB, consider using a singleton or a global
# if you need a Bigchain instance.
b = bigchaindb.Bigchain()
transaction = tx['transaction']
payload = None
if transaction['data'] and 'payload' in transaction['data']:
payload = transaction['data']['payload']
new_tx = create_tx(b.me, transaction['fulfillments'][0]['current_owners'], None, 'CREATE', payload=payload)
return new_tx
def main():
for app in APPS:
app_name = '{}'.format(app['name'])
if 'num_accounts' in app:
ledger_name = 'bigchain'.format(app['ledger'])
bigchain = Bigchain()
accounts = retrieve_accounts(bigchain, app_name)
assets = []
for i in range(app['num_assets']):
user = accounts[random.randint(0, app['num_accounts'] - 1)]
asset = create_asset(bigchain=bigchain,
user_pub=user['vk'],
user_priv=user['sk'],
asset=app['payload_func'](i))
assets.append(asset)
logging.info(
'{} assets initialized for app {} on ledger {}'.format(
len(assets), app_name, ledger_name))
elif 'accounts' in app:
bigchain = bigchaindb.Bigchain()
accounts_by_name = get_accounts_by_name(
retrieve_accounts(bigchain, app['name']))
for account in app['accounts']:
for ledger in account['ledgers']:
ledger_name = 'bigchaindb_examples_{}'.format(ledger['id'])
account_name = '{}-{}'.format(account['name'],
ledger['id'])
bigchain = bigchaindb.Bigchain(dbname=ledger_name)
assets = []
for i in range(ledger['num_assets']):
asset = create_asset(
bigchain=bigchain,
to=accounts_by_name[account_name]['vk'],
payload=app['payload_func'](i))
assets.append(asset)
logging.info(
'{} assets initialized for account {} in app {} on ledger {}'
.format(len(assets), account['name'], app_name,
ledger_name))
def get_fulfillment_message(transaction, fulfillment, serialized=False):
"""Get the fulfillment message for signing a specific fulfillment in a transaction
Args:
transaction (dict): a transaction
fulfillment (dict): a specific fulfillment (for a condition index) within the transaction
serialized (Optional[bool]): False returns a dict, True returns a serialized string
Returns:
str|dict: fulfillment message
"""
b = bigchaindb.Bigchain()
# data to sign contains common transaction data
fulfillment_message = {
'operation': transaction['transaction']['operation'],
'timestamp': transaction['transaction']['timestamp'],
'data': transaction['transaction']['data'],
'version': transaction['version'],
'id': transaction['_id']
}
# and the condition which needs to be retrieved from the output of a previous transaction
# or created on the fly it this is a `CREATE` transaction
fulfillment_message.update({
'input': fulfillment['input'],
'condition': None,
})
# if `TRANSFER` transaction
if fulfillment['input']:
# get previous condition
previous_tx = b.get_transaction(fulfillment['input']['txid'])
conditions = sorted(previous_tx['transaction']['conditions'],
key=lambda d: d['cid'])
fulfillment_message['condition'] = conditions[fulfillment['input']
['cid']]
# if `CREATE` transaction
# there is no previous transaction so we need to create one on the fly
else:
current_owner = transaction['transaction']['fulfillments'][0][
'current_owners'][0]
condition = json.loads(
cc.Ed25519Fulfillment(public_key=current_owner).serialize_json())
fulfillment_message['condition'] = {
'condition': {
'details': condition
}
}
if serialized:
return serialize(fulfillment_message)
return fulfillment_message
def _run_load(tx_left, stats):
logstats.thread.start(stats)
b = bigchaindb.Bigchain()
while True:
tx = b.create_transaction(b.me, USER_PUBLIC_KEY, None, 'CREATE')
tx_signed = b.sign_transaction(tx, b.me_private)
b.write_transaction(tx_signed)
stats['transactions'] += 1
if tx_left is not None:
tx_left -= 1
if tx_left == 0:
break
def _run_load(tx_left, stats):
logstats.thread.start(stats)
b = bigchaindb.Bigchain()
while True:
tx = Transaction.create([b.me], [([b.me], 1)])
tx = tx.sign([b.me_private])
b.write_transaction(tx)
stats['transactions'] += 1
if tx_left is not None:
tx_left -= 1
if tx_left == 0:
break
def run_upsert_validator(args):
"""Store validators which should be synced with Tendermint"""
b = bigchaindb.Bigchain()
validator = {'pub_key': {'type': 'ed25519',
'data': args.public_key},
'power': args.power}
validator_update = {'validator': validator,
'update_id': VALIDATOR_UPDATE_ID}
try:
query.store_validator_update(b.connection, validator_update)
except MultipleValidatorOperationError:
logger.error('A validator update is pending to be applied. '
'Please re-try after the current update has '
'been processed.')
def init():
# Try to access the keypair, throws an exception if it does not exist
b = bigchaindb.Bigchain()
conn = get_conn()
dbname = get_database_name()
create_database(conn, dbname)
table_names = ['bigchain', 'backlog', 'votes']
for table_name in table_names:
create_table(conn, dbname, table_name)
create_bigchain_secondary_index(conn, dbname)
create_backlog_secondary_index(conn, dbname)
create_votes_secondary_index(conn, dbname)
logger.info('Create genesis block.')
b.create_genesis_block()
logger.info('Done, have fun!')
def get_bigchain(conf=CONFIG_FILE):
if os.path.isfile(conf):
bigchaindb.config_utils.autoconfigure(filename=conf, force=True)
return bigchaindb.Bigchain()
def _run_init():
bdb = bigchaindb.Bigchain()
schema.init_database(connection=bdb.connection)
def run_set_shards(args):
b = bigchaindb.Bigchain()
r.table('bigchain').reconfigure(shards=args.num_shards,
replicas=1).run(b.conn)
r.table('backlog').reconfigure(shards=args.num_shards,
replicas=1).run(b.conn)
"""This module provides the blueprint for some basic API endpoints.
For more information please refer to the documentation in Apiary:
- http://docs.bigchaindb.apiary.io/
"""
import flask
from flask_restful import Resource, reqparse
import bigchaindb
from server.models import accounts
bigchain = bigchaindb.Bigchain()
class AccountListApi(Resource):
def get(self):
parser = reqparse.RequestParser()
parser.add_argument('app',
type=str,
choices=('ontherecord', ),
location='args',
required=True)
app = parser.parse_args()['app']
result = accounts.retrieve_accounts(bigchain, app)
return flask.jsonify({'accounts': result})
class ConnectorListApi(Resource):
def get(self):
parser = reqparse.RequestParser()
parser.add_argument('app',
def main():
for app in APPS:
app_name = '{}'.format(app['name'])
if 'num_accounts' in app:
ledger_name = 'bigchaindb_examples_{}'.format(app['ledger'])
bigchain = get_bigchain(ledger_id=app['ledger'])
accounts = retrieve_accounts(bigchain, app_name)
assets = []
for i in range(app['num_assets']):
asset = create_asset(bigchain=bigchain,
to=accounts[random.randint(
0, app['num_accounts'] - 1)]['vk'],
payload=app['payload_func'](i))
assets.append(asset)
logging.info(
'{} assets initialized for app {} on ledger {}'.format(
len(assets), app_name, ledger_name))
elif app_name == 'different_users':
bigchain = bigchaindb.Bigchain()
accounts_by_name = get_accounts_by_name(
retrieve_accounts(bigchain, app['name']))
admin_account = app['accounts'][0]
[user_assets, account_assets] = admin_account['ledgers']
bigchain = bigchaindb.Bigchain(dbname='bigchaindb_examples_0')
assets = []
for user_asset_ind in range(user_assets['num_assets']):
payload = {
'app': 'different_users',
'content': {
'asset_name': 'user{}'.format(user_asset_ind),
},
}
user_asset = create_asset(bigchain=bigchain,
to=accounts_by_name['admin-0']['vk'],
payload=payload)
assets.append(user_asset)
user_0_asset_id = assets[0]['id']
user_1_asset_id = assets[1]['id']
for account_asset_ind in range(account_assets['num_assets']):
account = app['accounts'][account_asset_ind + 1]
ledger = account['ledgers'][0]
account_name = '{}-{}'.format(account['name'], ledger['id'])
authorized = {}
if account_asset_ind < 3:
authorized[str(len(authorized))] = user_0_asset_id
if account_asset_ind > 1:
authorized[str(len(authorized))] = user_1_asset_id
payload = {
'app': 'different_users',
'content': {
'asset_name': accounts_by_name[account_name]['vk'],
'authorized': authorized,
},
}
account_asset = create_asset(
bigchain=bigchain,
to=accounts_by_name['admin-0']['vk'],
payload=payload)
assets.append(account_asset)
account_ind = 0
for account in app['accounts']:
account_ind += 10
if account['name'] != 'admin':
for ledger in account['ledgers']:
ledger_name = 'bigchaindb_examples_{}'.format(
ledger['id'])
account_name = '{}-{}'.format(account['name'],
ledger['id'])
bigchain = bigchaindb.Bigchain(dbname=ledger_name)
for i in range(ledger['num_assets']):
asset = create_asset(
bigchain=bigchain,
to=accounts_by_name[account_name]['vk'],
payload=app['payload_func'](i + account_ind))
assets.append(asset)
logging.info('{} assets initialized in app {}'.format(
len(assets), app_name))
elif 'accounts' in app:
bigchain = bigchaindb.Bigchain()
accounts_by_name = get_accounts_by_name(
retrieve_accounts(bigchain, app['name']))
for account in app['accounts']:
for ledger in account['ledgers']:
ledger_name = 'bigchaindb_examples_{}'.format(ledger['id'])
account_name = '{}-{}'.format(account['name'],
ledger['id'])
bigchain = bigchaindb.Bigchain(dbname=ledger_name)
assets = []
for i in range(ledger['num_assets']):
asset = create_asset(
bigchain=bigchain,
to=accounts_by_name[account_name]['vk'],
payload=app['payload_func'](i))
assets.append(asset)
logging.info(
'{} assets initialized for account {} in app {} on ledger {}'
.format(len(assets), account['name'], app_name,
ledger_name))
def init_databaseData():
b = bigchaindb.Bigchain()
b.init_heartbeat_data()
b.init_reassignnode_data()
