def validate_abi(abi):
"""
Helper function for validating an ABI
"""
if not is_list_like(abi):
raise ValueError("'abi' is not a list")
if not all(is_dict(e) for e in abi):
raise ValueError("'abi' is not a list of dictionaries")
functions = filter_by_type('function', abi)
selectors = groupby(compose(encode_hex, function_abi_to_4byte_selector),
functions)
duplicates = valfilter(lambda funcs: len(funcs) > 1, selectors)
if duplicates:
raise ValueError('Abi contains functions with colliding selectors. '
'Functions {0}'.format(
_prepare_selector_collision_msg(duplicates)))
def sign_and_send_raw_middleware(make_request, w3):
fill_tx = compose(fill_transaction_defaults(w3), fill_nonce(w3))
def middleware(method, params):
if method != "eth_sendTransaction":
return make_request(method, params)
else:
transaction = fill_tx(params[0])
if 'from' not in transaction:
return make_request(method, params)
elif transaction.get('from') not in accounts:
return make_request(method, params)
account = accounts[transaction['from']]
raw_tx = account.signTransaction(transaction).rawTransaction
return make_request("eth_sendRawTransaction", [raw_tx])
return middleware
from eth_utils.curried import (
apply_formatters_to_dict,
apply_key_map,
)
from hexbytes import (
HexBytes, )
from vns_web3.middleware.formatting import (
construct_formatting_middleware, )
from vns_web3.utils.toolz import (
compose, )
remap_geth_poa_fields = apply_key_map({
'extraData': 'proofOfAuthorityData',
})
pythonic_geth_poa = apply_formatters_to_dict({
'proofOfAuthorityData': HexBytes,
})
geth_poa_cleanup = compose(pythonic_geth_poa, remap_geth_poa_fields)
geth_poa_middleware = construct_formatting_middleware(result_formatters={
'eth_getBlockByHash':
geth_poa_cleanup,
'eth_getBlockByNumber':
geth_poa_cleanup,
}, )
def chain_id_validator(web3):
return compose(apply_formatter_at_index(transaction_normalizer, 0),
transaction_param_validator(web3))
def apply_formatters_to_args(*formatters):
return compose(*(apply_formatter_at_index(formatter, index)
for index, formatter in enumerate(formatters)))
def is_testrpc_available():
try:
import testrpc # noqa: F401
return True
except ImportError:
return False
to_integer_if_hex = apply_formatter_if(is_string, hex_to_integer)
TRANSACTION_FORMATTERS = {
'to':
apply_formatter_if(
compose(complement(bool), decode_hex),
static_return(None),
),
}
def ethtestrpc_string_middleware(make_request, web3):
def middleware(method, params):
return valmap(to_text, make_request(method, params))
return middleware
ethtestrpc_middleware = construct_formatting_middleware(
request_formatters={
'eth_uninstallFilter': apply_formatter_at_index(to_integer_if_hex, 0),
def factory(cls, *args, **kwargs):
return compose(cls, Contract.factory(*args, **kwargs))
TRANSACTION_PARAMS_MAPPING = {
'gasPrice': 'gas_price',
}
transaction_params_remapper = apply_key_map(TRANSACTION_PARAMS_MAPPING)
TRANSACTION_PARAMS_FORMATTERS = {
'gas': to_integer_if_hex,
'gasPrice': to_integer_if_hex,
'value': to_integer_if_hex,
'nonce': to_integer_if_hex,
}
transaction_params_formatter = compose(
# remove nonce for now due to issue https://github.com/ethereum/eth-tester/issues/80
remove_key_if('nonce', lambda _: True),
apply_formatters_to_dict(TRANSACTION_PARAMS_FORMATTERS),
)
FILTER_PARAMS_MAPPINGS = {
'fromBlock': 'from_block',
'toBlock': 'to_block',
}
filter_params_remapper = apply_key_map(FILTER_PARAMS_MAPPINGS)
FILTER_PARAMS_FORMATTERS = {
'fromBlock': to_integer_if_hex,
'toBlock': to_integer_if_hex,
}
block_formatter = apply_formatters_to_dict(BLOCK_FORMATTERS)
SYNCING_FORMATTERS = {
'startingBlock': to_integer_if_hex,
'currentBlock': to_integer_if_hex,
'highestBlock': to_integer_if_hex,
'knownStates': to_integer_if_hex,
'pulledStates': to_integer_if_hex,
}
syncing_formatter = apply_formatters_to_dict(SYNCING_FORMATTERS)
TRANSACTION_POOL_CONTENT_FORMATTERS = {
'pending': compose(
keymap(to_ascii_if_bytes),
valmap(transaction_formatter),
),
'queued': compose(
keymap(to_ascii_if_bytes),
valmap(transaction_formatter),
),
}
transaction_pool_content_formatter = apply_formatters_to_dict(
TRANSACTION_POOL_CONTENT_FORMATTERS)
TRANSACTION_POOL_INSPECT_FORMATTERS = {
'pending': keymap(to_ascii_if_bytes),
'queued': keymap(to_ascii_if_bytes),
}
eth_tester.unlock_account(transaction['from'], password)
transaction_hash = eth_tester.send_transaction(transaction)
finally:
eth_tester.lock_account(transaction['from'])
return transaction_hash
API_ENDPOINTS = {
'web3': {
'clientVersion':
client_version,
'sha3':
compose(
encode_hex,
keccak,
decode_hex,
without_eth_tester(operator.itemgetter(0)),
),
},
'net': {
'version': not_implemented,
'peerCount': not_implemented,
'listening': not_implemented,
},
'vns': {
'protocolVersion':
not_implemented,
'syncing':
not_implemented,
'coinbase':
compose(
apply_formatter_if, )
from vns_web3.utils.toolz import (
compose, )
from vns_web3.utils.transactions import (
fill_nonce,
fill_transaction_defaults,
)
to_hexstr_from_eth_key = operator.methodcaller('to_hex')
def is_eth_key(value):
return isinstance(value, PrivateKey)
key_normalizer = compose(
apply_formatter_if(is_eth_key, to_hexstr_from_eth_key), )
@to_dict
def gen_normalized_accounts(val):
if isinstance(val, (
list,
tuple,
set,
)):
for i in val:
account = to_account(i)
yield account.address, account
else:
account = to_account(val)
yield account.address, account