def __new__(cls, value):
"""
Create new instance of Tarantool field (single tuple element)
"""
# Since parent class is immutable, we should
# override __new__, not __init__
if isinstance(value, unicode):
return super(field, cls).__new__(cls, value.encode("utf-8", "replace"))
if sys.version_info.major < 3 and isinstance(value, str):
return super(field, cls).__new__(cls, value)
if isinstance(value, (bytearray, bytes)):
return super(field, cls).__new__(cls, value)
if isinstance(value, (int, long)):
if 0 <= value <= 0xFFFFFFFF:
# 32 bit integer
return super(field, cls).__new__(cls, struct_L.pack(value))
elif 0xFFFFFFFF < value <= 0xFFFFFFFFFFFFFFFF:
# 64 bit integer
return super(field, cls).__new__(cls, struct_Q.pack(value))
else:
raise ValueError("Integer argument out of range")
# NOTE: It is posible to implement float
raise TypeError("Unsupported argument type %s" % (type(value).__name__))
def __init__(self, proc_name, args, return_tuple):
flags = 1 if return_tuple else 0
assert isinstance(args, (list, tuple))
# args explicitly casted to string due tarantool bug
request_body = \
struct_L.pack(flags) + \
self.pack_field(proc_name) +\
self.pack_tuple(map(str, args))
self._bytes = self.header(len(request_body)) + request_body
def __init__(self, conn, proc_name, args, return_tuple): # pylint: disable=W0231
super(RequestCall, self).__init__(conn)
flags = 1 if return_tuple else 0
assert isinstance(args, (list, tuple))
request_body = \
struct_L.pack(flags) + \
self.pack_field(proc_name) +\
self.pack_tuple([k for k in args])
self._bytes = self.header(len(request_body)) + request_body
def __init__(self, conn, space_name, key, op_list, return_tuple): # pylint: disable=W0231
super(RequestUpdate, self).__init__(conn)
flags = 1 if return_tuple else 0
assert isinstance(key, (int, basestring))
space_no = self.conn.schema.space_no(space_name)
request_body = \
struct_LL.pack(space_no, flags) + \
self.pack_key_tuple((key,), space_no, 0) + \
struct_L.pack(len(op_list)) +\
self.pack_operations(op_list)
self._bytes = self.header(len(request_body)) + request_body
def pack_tuple(cls, values):
"""
Pack tuple of values
<tuple> ::= <cardinality><field>+
:param value: tuple to be packed
:type value: tuple of scalar values (bytes, str or int)
:return: packed tuple
:rtype: bytes
"""
assert isinstance(values, (tuple, list))
cardinality = struct_L.pack(len(values))
packed_items = [cls.pack_field(v) for v in values]
packed_items.insert(0, cardinality)
return b''.join(packed_items)
def __init__(self, space_no, key, op_list, return_tuple):
flags = 1 if return_tuple else 0
if not isinstance(key, (int, bytes, basestring, tuple)):
raise TypeError('Unsuppoted key type. Key must be instance '
'of int, bytes, str or tuple.')
if isinstance(key, (int, bytes, basestring)):
key = (key, )
request_body = \
struct_LL.pack(space_no, flags) + \
self.pack_tuple(key) + \
struct_L.pack(len(op_list)) +\
self.pack_operations(op_list)
self._bytes = self.header(len(request_body)) + request_body
def pack_fields(self, packed_values):
'''\
Pack tuple of values
<tuple> ::= <cardinality><field>+
:param value: tuple to be packed
:type value: tuple of scalar values (bytes, str or int)
:return: packed tuple
:rtype: bytes
'''
assert isinstance(packed_values, (tuple, list))
cardinality = struct_L.pack(len(packed_values))
packed_items = []
packed_items.append(cardinality)
for value in packed_values:
packed_items.append(self.pack_field(value))
return b"".join(packed_items)
