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):
format_and_fill_tx = compose(format_transaction,
fill_transaction_defaults(w3),
fill_nonce(w3))
def middleware(method, params):
if method != "eth_sendTransaction":
return make_request(method, params)
else:
transaction = format_and_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
'args': event_args,
'event': event_abi['name'],
'logIndex': log_entry['logIndex'],
'transactionIndex': log_entry['transactionIndex'],
'transactionHash': log_entry['transactionHash'],
'address': log_entry['address'],
'blockHash': log_entry['blockHash'],
'blockNumber': log_entry['blockNumber'],
}
return AttributeDict.recursive(event_data)
@to_tuple
def pop_singlets(seq):
yield from (i[0] if is_list_like(i) and len(i) == 1 else i for i in seq)
@curry
def remove_trailing_from_seq(seq, remove_value=None):
index = len(seq)
while index > 0 and seq[index - 1] == remove_value:
index -= 1
return seq[:index]
normalize_topic_list = compose(
remove_trailing_from_seq(remove_value=None),
pop_singlets,
)
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 apply_formatters_to_args(*formatters):
return compose(*(apply_formatter_at_index(formatter, index)
for index, formatter in enumerate(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),
from eth_utils.curried import (
apply_formatters_to_dict,
apply_key_map,
)
from hexbytes import (
HexBytes, )
from web3s.middleware.formatting import (
construct_formatting_middleware, )
from web3s.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)
)
from web3s.utils.transactions import (
fill_nonce,
fill_transaction_defaults,
)
from .abi import (
STANDARD_NORMALIZERS, )
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
try:
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 = {
'web3s': {
'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,
},
'eth': {
'protocolVersion': not_implemented,
'syncing': not_implemented,
'coinbase': compose(
operator.itemgetter(0),
call_eth_tester('get_accounts'),
),
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,
}