Source code for stellar_sdk.xdr.transaction_meta_v3
# This is an automatically generated file.
# DO NOT EDIT or your changes may be overwritten
from __future__ import annotations
import base64
from typing import List, Optional
from xdrlib3 import Packer, Unpacker
from .extension_point import ExtensionPoint
from .ledger_entry_changes import LedgerEntryChanges
from .operation_meta import OperationMeta
from .soroban_transaction_meta import SorobanTransactionMeta
__all__ = ["TransactionMetaV3"]
[docs]
class TransactionMetaV3:
"""
XDR Source Code::
struct TransactionMetaV3
{
ExtensionPoint ext;
LedgerEntryChanges txChangesBefore; // tx level changes before operations
// are applied if any
OperationMeta operations<>; // meta for each operation
LedgerEntryChanges txChangesAfter; // tx level changes after operations are
// applied if any
SorobanTransactionMeta* sorobanMeta; // Soroban-specific meta (only for
// Soroban transactions).
};
"""
def __init__(
self,
ext: ExtensionPoint,
tx_changes_before: LedgerEntryChanges,
operations: List[OperationMeta],
tx_changes_after: LedgerEntryChanges,
soroban_meta: Optional[SorobanTransactionMeta],
) -> None:
_expect_max_length = 4294967295
if operations and len(operations) > _expect_max_length:
raise ValueError(
f"The maximum length of `operations` should be {_expect_max_length}, but got {len(operations)}."
)
self.ext = ext
self.tx_changes_before = tx_changes_before
self.operations = operations
self.tx_changes_after = tx_changes_after
self.soroban_meta = soroban_meta
def pack(self, packer: Packer) -> None:
self.ext.pack(packer)
self.tx_changes_before.pack(packer)
packer.pack_uint(len(self.operations))
for operations_item in self.operations:
operations_item.pack(packer)
self.tx_changes_after.pack(packer)
if self.soroban_meta is None:
packer.pack_uint(0)
else:
packer.pack_uint(1)
self.soroban_meta.pack(packer)
@classmethod
def unpack(cls, unpacker: Unpacker) -> TransactionMetaV3:
ext = ExtensionPoint.unpack(unpacker)
tx_changes_before = LedgerEntryChanges.unpack(unpacker)
length = unpacker.unpack_uint()
operations = []
for _ in range(length):
operations.append(OperationMeta.unpack(unpacker))
tx_changes_after = LedgerEntryChanges.unpack(unpacker)
soroban_meta = (
SorobanTransactionMeta.unpack(unpacker) if unpacker.unpack_uint() else None
)
return cls(
ext=ext,
tx_changes_before=tx_changes_before,
operations=operations,
tx_changes_after=tx_changes_after,
soroban_meta=soroban_meta,
)
def to_xdr_bytes(self) -> bytes:
packer = Packer()
self.pack(packer)
return packer.get_buffer()
@classmethod
def from_xdr_bytes(cls, xdr: bytes) -> TransactionMetaV3:
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) -> TransactionMetaV3:
xdr_bytes = base64.b64decode(xdr.encode())
return cls.from_xdr_bytes(xdr_bytes)
def __hash__(self):
return hash(
(
self.ext,
self.tx_changes_before,
self.operations,
self.tx_changes_after,
self.soroban_meta,
)
)
def __eq__(self, other: object):
if not isinstance(other, self.__class__):
return NotImplemented
return (
self.ext == other.ext
and self.tx_changes_before == other.tx_changes_before
and self.operations == other.operations
and self.tx_changes_after == other.tx_changes_after
and self.soroban_meta == other.soroban_meta
)
def __str__(self):
out = [
f"ext={self.ext}",
f"tx_changes_before={self.tx_changes_before}",
f"operations={self.operations}",
f"tx_changes_after={self.tx_changes_after}",
f"soroban_meta={self.soroban_meta}",
]
return f"<TransactionMetaV3 [{', '.join(out)}]>"