from .formatting import (
construct_formatting_middleware, )
def bytes_to_ascii(value):
return codecs.decode(value, 'ascii')
to_ascii_if_bytes = apply_formatter_if(is_bytes, bytes_to_ascii)
to_integer_if_hex = apply_formatter_if(is_string, hex_to_integer)
block_number_formatter = apply_formatter_if(is_integer, integer_to_hex)
is_false = partial(operator.is_, False)
is_not_false = complement(is_false)
is_not_null = complement(is_null)
@curry
def to_hexbytes(num_bytes, val, variable_length=False):
if isinstance(val, (str, int, bytes)):
result = HexBytes(val)
else:
raise TypeError("Cannot convert %r to HexBytes" % val)
extra_bytes = len(result) - num_bytes
if extra_bytes == 0 or (variable_length and extra_bytes < 0):
return result
elif all(byte == 0 for byte in result[:extra_bytes]):
return HexBytes(result[extra_bytes:])
pipe,
)
def is_named_block(value):
return value in {"latest", "earliest", "pending"}
def is_hexstr(value):
return is_string(value) and is_hex(value)
to_integer_if_hex = apply_formatter_if(is_hexstr, hex_to_integer)
is_not_named_block = complement(is_named_block)
TRANSACTION_KEY_MAPPINGS = {
'block_hash': 'blockHash',
'block_number': 'blockNumber',
'gas_price': 'gasPrice',
'transaction_hash': 'transactionHash',
'transaction_index': 'transactionIndex',
}
transaction_key_remapper = apply_key_map(TRANSACTION_KEY_MAPPINGS)
LOG_KEY_MAPPINGS = {
'log_index': 'logIndex',
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),
HexBytes, )
from web3.exceptions import (
ValidationError, )
from web3.middleware.formatting import (
construct_web3_formatting_middleware, )
from web3.utils.toolz import (
complement,
compose,
curry,
dissoc,
)
MAX_EXTRADATA_LENGTH = 32
is_not_null = complement(is_null)
@curry
def validate_chain_id(web3, chain_id):
if chain_id == web3.net.chainId:
return chain_id
else:
raise ValidationError("The transaction declared chain ID %r, "
"but the connected node is on %r" % (
chain_id,
"UNKNOWN",
))
def check_extradata_length(val):