complement,
compose,
curry,
dissoc,
)
from web3.exceptions import (
ValidationError,
)
from web3.middleware.formatting import (
construct_web3_formatting_middleware,
)
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",
)
)
return seq[:index]
normalize_topic_list = compose(
remove_trailing_from_seq(remove_value=None),
pop_singlets,
)
def is_indexed(arg):
if isinstance(arg, TopicArgumentFilter) is True:
return True
return False
is_not_indexed = complement(is_indexed)
class EventFilterBuilder:
formatter = None
_fromBlock = None
_toBlock = None
_address = None
_immutable = False
def __init__(self, event_abi, formatter=None):
self.event_abi = event_abi
self.formatter = formatter
self.event_topic = initialize_event_topics(self.event_abi)
self.args = AttributeDict(
_build_argument_filters_from_event_abi(event_abi))
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:])
"""
self.data_filter_set = data_filter_set
if any(data_filter_set):
self.data_filter_set_function = match_fn(data_filter_set)
def is_valid_entry(self, entry):
if not self.data_filter_set:
return True
return bool(self.data_filter_set_function(entry['data']))
def decode_utf8_bytes(value):
return value.decode("utf-8")
not_text = complement(is_text)
normalize_to_text = apply_formatter_if(not_text, decode_utf8_bytes)
def normalize_data_values(type_string, data_value):
"""Decodes utf-8 bytes to strings for abi string values.
eth-abi v1 returns utf-8 bytes for string values.
This can be removed once eth-abi v2 is required.
"""
_type = parse_type_string(type_string)
if _type.base == "string":
if _type.arrlist is not None:
return tuple((normalize_to_text(value) for value in data_value))
else:
return normalize_to_text(data_value)
construct_fixture_middleware,
construct_formatting_middleware,
)
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',
'transaction_index': 'transactionIndex',
'transaction_hash': 'transactionHash',
"""
self.data_filter_set = data_filter_set
if any(data_filter_set):
self.data_filter_set_function = match_fn(data_filter_set)
def is_valid_entry(self, entry):
if not self.data_filter_set:
return True
return bool(self.data_filter_set_function(entry['data']))
def decode_utf8_bytes(value):
return value.decode("utf-8")
not_text = complement(is_text)
normalize_to_text = apply_formatter_if(not_text, decode_utf8_bytes)
def normalize_data_values(type_string, data_value):
"""Decodes utf-8 bytes to strings for abi string values.
eth-abi v1 returns utf-8 bytes for string values.
This can be removed once eth-abi v2 is required.
"""
_type = parse_type_string(type_string)
if _type.base == "string":
if _type.arrlist is not None:
return tuple((normalize_to_text(value) for value in data_value))
else:
return normalize_to_text(data_value)
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),
'eth_getFilterChanges': apply_formatter_at_index(to_integer_if_hex, 0),
index -= 1
return seq[:index]
normalize_topic_list = compose(
remove_trailing_from_seq(remove_value=None),
pop_singlets,)
def is_indexed(arg):
if isinstance(arg, TopicArgumentFilter) is True:
return True
return False
is_not_indexed = complement(is_indexed)
class EventFilterBuilder:
formatter = None
_fromBlock = None
_toBlock = None
_address = None
_immutable = False
def __init__(self, event_abi, formatter=None):
self.event_abi = event_abi
self.formatter = formatter
self.event_topic = initialize_event_topics(self.event_abi)
self.args = AttributeDict(
_build_argument_filters_from_event_abi(event_abi))
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),
construct_formatting_middleware,
)
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',
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:])