async def append(
self,
transactions: Union[List[Transaction], List[dict]],
txn_time: Union[str, int] = None) -> (int, int, List[Transaction]):
transactions_to_append = []
for txn in transactions:
if isinstance(txn, Transaction):
transactions_to_append.append(txn)
elif isinstance(txn, dict):
transactions_to_append.append(Transaction.create(txn))
else:
raise RuntimeError('Unexpected transaction type')
transactions_with_meta = await self.__api.remote_call(
msg_type=
'did:sov:BzCbsNYhMrjHiqZDTUASHg;spec/microledgers/1.0/append_txns_metadata',
params={
'name': self.name,
'txns': transactions_to_append,
'txn_time': txn_time
})
self.__state, start, end, appended_txns = await self.__api.remote_call(
msg_type=
'did:sov:BzCbsNYhMrjHiqZDTUASHg;spec/microledgers/1.0/append_txns',
params={
'name': self.name,
'txns': transactions_with_meta,
})
return start, end, Transaction.from_value(appended_txns)
async def get_uncommitted_transactions(self) -> List[Transaction]:
txns = await self.__api.remote_call(
msg_type=
'did:sov:BzCbsNYhMrjHiqZDTUASHg;spec/microledgers/1.0/get_uncommitted_txns',
params={'name': self.name})
txns = Transaction.from_value(txns)
assert isinstance(txns, list)
return txns
async def get_last_committed_transaction(self) -> Transaction:
txn = await self.__api.remote_call(
msg_type=
'did:sov:BzCbsNYhMrjHiqZDTUASHg;spec/microledgers/1.0/get_last_committed_txn',
params={'name': self.name})
txn = Transaction.from_value(txn)
assert isinstance(txn, Transaction)
return txn
async def commit(self, count: int) -> (int, int, List[Transaction]):
self.__state, start, end, committed_txns = await self.__api.remote_call(
msg_type=
'did:sov:BzCbsNYhMrjHiqZDTUASHg;spec/microledgers/1.0/commit_txns',
params={
'name': self.name,
'count': count,
})
return start, end, Transaction.from_value(committed_txns)
async def init(self, genesis: List[Transaction]) -> List[Transaction]:
self.__state, txns = await self.__api.remote_call(
msg_type=
'did:sov:BzCbsNYhMrjHiqZDTUASHg;spec/microledgers/1.0/initialize',
params={
'name': self.name,
'genesis_txns': genesis
})
txns = [Transaction.from_value(txn) for txn in txns]
return txns
async def get_transaction(self, seq_no: int) -> Transaction:
txn = await self.__api.remote_call(
msg_type=
'did:sov:BzCbsNYhMrjHiqZDTUASHg;spec/microledgers/1.0/get_by_seq_no',
params={
'name': self.name,
'seqNo': seq_no
})
txn = Transaction.from_value(txn)
assert isinstance(txn, Transaction)
return txn
async def append(
self, transactions: Union[List[Transaction], List[dict]], txn_time: Union[str, int] = None
) -> (int, int, List[Transaction]):
txns = []
for i, txn in enumerate(Transaction.from_value(transactions)):
metadata = txn.get('txnMetadata', {})
if 'seq_no' not in metadata:
metadata['seq_no'] = self.seq_no + 1 + i
if 'time' not in metadata:
metadata['time'] = txn_time or str(datetime.datetime.utcnow())
txn['txnMetadata'] = metadata
txns.append(txn)
start = self.seq_no + 1
end = start + len(txns) - 1
self.__uncommitted.extend(txns)
return start, end, txns