Source code for stellar_sdk.xdr.transaction_meta
# This is an automatically generated file.
# DO NOT EDIT or your changes may be overwritten
import base64
from typing import List
from xdrlib import Packer, Unpacker
from ..type_checked import type_checked
from .base import Integer
from .operation_meta import OperationMeta
from .transaction_meta_v1 import TransactionMetaV1
from .transaction_meta_v2 import TransactionMetaV2
__all__ = ["TransactionMeta"]
[docs]@type_checked
class TransactionMeta:
"""
XDR Source Code::
union TransactionMeta switch (int v)
{
case 0:
OperationMeta operations<>;
case 1:
TransactionMetaV1 v1;
case 2:
TransactionMetaV2 v2;
};
"""
def __init__(
self,
v: int,
operations: List[OperationMeta] = None,
v1: TransactionMetaV1 = None,
v2: TransactionMetaV2 = None,
) -> None:
if operations and len(operations) > 4294967295:
raise ValueError(
f"The maximum length of `operations` should be 4294967295, but got {len(operations)}."
)
self.v = v
self.operations = operations
self.v1 = v1
self.v2 = v2
def pack(self, packer: Packer) -> None:
Integer(self.v).pack(packer)
if self.v == 0:
if self.operations is None:
raise ValueError("operations should not be None.")
packer.pack_uint(len(self.operations))
for operations_item in self.operations:
operations_item.pack(packer)
return
if self.v == 1:
if self.v1 is None:
raise ValueError("v1 should not be None.")
self.v1.pack(packer)
return
if self.v == 2:
if self.v2 is None:
raise ValueError("v2 should not be None.")
self.v2.pack(packer)
return
@classmethod
def unpack(cls, unpacker: Unpacker) -> "TransactionMeta":
v = Integer.unpack(unpacker)
if v == 0:
length = unpacker.unpack_uint()
operations = []
for _ in range(length):
operations.append(OperationMeta.unpack(unpacker))
return cls(v=v, operations=operations)
if v == 1:
v1 = TransactionMetaV1.unpack(unpacker)
return cls(v=v, v1=v1)
if v == 2:
v2 = TransactionMetaV2.unpack(unpacker)
return cls(v=v, v2=v2)
return cls(v=v)
def to_xdr_bytes(self) -> bytes:
packer = Packer()
self.pack(packer)
return packer.get_buffer()
@classmethod
def from_xdr_bytes(cls, xdr: bytes) -> "TransactionMeta":
unpacker = Unpacker(xdr)
return cls.unpack(unpacker)
def to_xdr(self) -> str:
xdr_bytes = self.to_xdr_bytes()
return base64.b64encode(xdr_bytes).decode()
@classmethod
def from_xdr(cls, xdr: str) -> "TransactionMeta":
xdr_bytes = base64.b64decode(xdr.encode())
return cls.from_xdr_bytes(xdr_bytes)
def __eq__(self, other: object):
if not isinstance(other, self.__class__):
return NotImplemented
return (
self.v == other.v
and self.operations == other.operations
and self.v1 == other.v1
and self.v2 == other.v2
)
def __str__(self):
out = []
out.append(f"v={self.v}")
out.append(
f"operations={self.operations}"
) if self.operations is not None else None
out.append(f"v1={self.v1}") if self.v1 is not None else None
out.append(f"v2={self.v2}") if self.v2 is not None else None
return f"<TransactionMeta {[', '.join(out)]}>"