def test_run_in_transaction_w_abort_w_retry_metadata(self):
import datetime
from google.cloud.proto.spanner.v1.spanner_pb2 import CommitResponse
from google.cloud.proto.spanner.v1.transaction_pb2 import (
Transaction as TransactionPB)
from google.cloud._helpers import UTC
from google.cloud._helpers import _datetime_to_pb_timestamp
from google.cloud.spanner.transaction import Transaction
from google.cloud.spanner import session as MUT
from google.cloud._testing import _Monkey
TABLE_NAME = 'citizens'
COLUMNS = ['email', 'first_name', 'last_name', 'age']
VALUES = [
['*****@*****.**', 'Phred', 'Phlyntstone', 32],
['*****@*****.**', 'Bharney', 'Rhubble', 31],
]
TRANSACTION_ID = b'FACEDACE'
RETRY_SECONDS = 12
RETRY_NANOS = 3456
transaction_pb = TransactionPB(id=TRANSACTION_ID)
now = datetime.datetime.utcnow().replace(tzinfo=UTC)
now_pb = _datetime_to_pb_timestamp(now)
response = CommitResponse(commit_timestamp=now_pb)
gax_api = _SpannerApi(
_begin_transaction_response=transaction_pb,
_commit_abort_count=1,
_commit_abort_retry_seconds=RETRY_SECONDS,
_commit_abort_retry_nanos=RETRY_NANOS,
_commit_response=response,
)
database = _Database(self.DATABASE_NAME)
database.spanner_api = gax_api
session = self._make_one(database)
session._session_id = 'DEADBEEF'
called_with = []
def unit_of_work(txn, *args, **kw):
called_with.append((txn, args, kw))
txn.insert(TABLE_NAME, COLUMNS, VALUES)
time_module = _FauxTimeModule()
with _Monkey(MUT, time=time_module):
committed = session.run_in_transaction(
unit_of_work, 'abc', some_arg='def')
self.assertEqual(time_module._slept,
RETRY_SECONDS + RETRY_NANOS / 1.0e9)
self.assertEqual(committed, now)
self.assertEqual(len(called_with), 2)
for index, (txn, args, kw) in enumerate(called_with):
self.assertIsInstance(txn, Transaction)
if index == 1:
self.assertEqual(txn.committed, committed)
else:
self.assertIsNone(txn.committed)
self.assertEqual(args, ('abc',))
self.assertEqual(kw, {'some_arg': 'def'})
def test_run_in_transaction_w_abort_w_retry_metadata_deadline(self):
import datetime
from google.gax.errors import GaxError
from google.gax.grpc import exc_to_code
from grpc import StatusCode
from google.cloud.proto.spanner.v1.spanner_pb2 import CommitResponse
from google.cloud.proto.spanner.v1.transaction_pb2 import (
Transaction as TransactionPB)
from google.cloud._helpers import UTC
from google.cloud._helpers import _datetime_to_pb_timestamp
from google.cloud.spanner.transaction import Transaction
from google.cloud.spanner import session as MUT
from google.cloud._testing import _Monkey
TABLE_NAME = 'citizens'
COLUMNS = ['email', 'first_name', 'last_name', 'age']
VALUES = [
['*****@*****.**', 'Phred', 'Phlyntstone', 32],
['*****@*****.**', 'Bharney', 'Rhubble', 31],
]
TRANSACTION_ID = b'FACEDACE'
RETRY_SECONDS = 1
RETRY_NANOS = 3456
transaction_pb = TransactionPB(id=TRANSACTION_ID)
now = datetime.datetime.utcnow().replace(tzinfo=UTC)
now_pb = _datetime_to_pb_timestamp(now)
response = CommitResponse(commit_timestamp=now_pb)
gax_api = _SpannerApi(
_begin_transaction_response=transaction_pb,
_commit_abort_count=1,
_commit_abort_retry_seconds=RETRY_SECONDS,
_commit_abort_retry_nanos=RETRY_NANOS,
_commit_response=response,
)
database = _Database(self.DATABASE_NAME)
database.spanner_api = gax_api
session = self._make_one(database)
session._session_id = 'DEADBEEF'
called_with = []
def unit_of_work(txn, *args, **kw):
called_with.append((txn, args, kw))
txn.insert(TABLE_NAME, COLUMNS, VALUES)
time_module = _FauxTimeModule()
with _Monkey(MUT, time=time_module):
with self.assertRaises(GaxError) as exc:
session.run_in_transaction(
unit_of_work, 'abc', some_arg='def', timeout_secs=0.01)
self.assertEqual(exc_to_code(exc.exception.cause), StatusCode.ABORTED)
self.assertIsNone(time_module._slept)
self.assertEqual(len(called_with), 1)
txn, args, kw = called_with[0]
self.assertIsInstance(txn, Transaction)
self.assertIsNone(txn.committed)
self.assertEqual(args, ('abc',))
self.assertEqual(kw, {'some_arg': 'def'})
def test_context_mgr_failure(self):
from google.protobuf.empty_pb2 import Empty
empty_pb = Empty()
from google.cloud.proto.spanner.v1.transaction_pb2 import (
Transaction as TransactionPB)
transaction_pb = TransactionPB(id=self.TRANSACTION_ID)
database = _Database()
api = database.spanner_api = _FauxSpannerAPI(
_begin_transaction_response=transaction_pb,
_rollback_response=empty_pb)
session = _Session(database)
transaction = self._make_one(session)
with self.assertRaises(Exception):
with transaction:
transaction.insert(TABLE_NAME, COLUMNS, VALUES)
raise Exception("bail out")
self.assertEqual(transaction.committed, None)
self.assertTrue(transaction._rolled_back)
self.assertEqual(len(transaction._mutations), 1)
self.assertEqual(api._committed, None)
session_id, txn_id, options = api._rolled_back
self.assertEqual(session_id, session.name)
self.assertEqual(txn_id, self.TRANSACTION_ID)
self.assertEqual(options.kwargs['metadata'],
[('google-cloud-resource-prefix', database.name)])
def test_context_mgr_success(self):
import datetime
from google.cloud.proto.spanner.v1.spanner_pb2 import CommitResponse
from google.cloud.proto.spanner.v1.transaction_pb2 import (
Transaction as TransactionPB)
from google.cloud._helpers import UTC
from google.cloud._helpers import _datetime_to_pb_timestamp
transaction_pb = TransactionPB(id=self.TRANSACTION_ID)
database = _Database()
now = datetime.datetime.utcnow().replace(tzinfo=UTC)
now_pb = _datetime_to_pb_timestamp(now)
response = CommitResponse(commit_timestamp=now_pb)
database = _Database()
api = database.spanner_api = _FauxSpannerAPI(
_begin_transaction_response=transaction_pb,
_commit_response=response)
session = _Session(database)
transaction = self._make_one(session)
with transaction:
transaction.insert(TABLE_NAME, COLUMNS, VALUES)
self.assertEqual(transaction.committed, now)
session_id, mutations, txn_id, options = api._committed
self.assertEqual(session_id, self.SESSION_NAME)
self.assertEqual(txn_id, self.TRANSACTION_ID)
self.assertEqual(mutations, transaction._mutations)
self.assertEqual(options.kwargs['metadata'],
[('google-cloud-resource-prefix', database.name)])
def test_begin_ok_exact_staleness(self):
from google.cloud.proto.spanner.v1.transaction_pb2 import (
Transaction as TransactionPB)
transaction_pb = TransactionPB(id=self.TRANSACTION_ID)
database = _Database()
api = database.spanner_api = _FauxSpannerAPI(
_begin_transaction_response=transaction_pb)
duration = self._makeDuration(seconds=3, microseconds=123456)
session = _Session(database)
snapshot = self._make_one(session,
exact_staleness=duration,
multi_use=True)
txn_id = snapshot.begin()
self.assertEqual(txn_id, self.TRANSACTION_ID)
self.assertEqual(snapshot._transaction_id, self.TRANSACTION_ID)
session_id, txn_options, options = api._begun
self.assertEqual(session_id, session.name)
read_only = txn_options.read_only
self.assertEqual(read_only.exact_staleness.seconds, 3)
self.assertEqual(read_only.exact_staleness.nanos, 123456000)
self.assertEqual(options.kwargs['metadata'],
[('google-cloud-resource-prefix', database.name)])
def test_run_in_transaction_w_timeout(self):
from google.cloud.spanner import session as MUT
from google.cloud._testing import _Monkey
from google.gax.errors import GaxError
from google.gax.grpc import exc_to_code
from google.cloud.proto.spanner.v1.transaction_pb2 import (
Transaction as TransactionPB)
from grpc import StatusCode
from google.cloud.spanner.transaction import Transaction
TABLE_NAME = 'citizens'
COLUMNS = ['email', 'first_name', 'last_name', 'age']
VALUES = [
['*****@*****.**', 'Phred', 'Phlyntstone', 32],
['*****@*****.**', 'Bharney', 'Rhubble', 31],
]
TRANSACTION_ID = b'FACEDACE'
transaction_pb = TransactionPB(id=TRANSACTION_ID)
gax_api = _SpannerApi(
_begin_transaction_response=transaction_pb,
_commit_abort_count=1e6,
)
database = _Database(self.DATABASE_NAME)
database.spanner_api = gax_api
session = self._make_one(database)
session._session_id = 'DEADBEEF'
called_with = []
def unit_of_work(txn, *args, **kw):
called_with.append((txn, args, kw))
txn.insert(TABLE_NAME, COLUMNS, VALUES)
time_module = _FauxTimeModule()
time_module._times = [1, 1.5, 2.5] # retry once w/ timeout_secs=1
with _Monkey(MUT, time=time_module):
with self.assertRaises(GaxError) as exc:
session.run_in_transaction(unit_of_work, timeout_secs=1)
self.assertEqual(exc_to_code(exc.exception.cause), StatusCode.ABORTED)
self.assertEqual(time_module._slept, None)
self.assertEqual(len(called_with), 2)
for txn, args, kw in called_with:
self.assertIsInstance(txn, Transaction)
self.assertIsNone(txn.committed)
self.assertEqual(args, ())
self.assertEqual(kw, {})
def test_run_in_transaction_w_abort_no_retry_metadata(self):
import datetime
from google.cloud.proto.spanner.v1.spanner_pb2 import CommitResponse
from google.cloud.proto.spanner.v1.transaction_pb2 import (
Transaction as TransactionPB)
from google.cloud._helpers import UTC
from google.cloud._helpers import _datetime_to_pb_timestamp
from google.cloud.spanner.transaction import Transaction
TABLE_NAME = 'citizens'
COLUMNS = ['email', 'first_name', 'last_name', 'age']
VALUES = [
['*****@*****.**', 'Phred', 'Phlyntstone', 32],
['*****@*****.**', 'Bharney', 'Rhubble', 31],
]
TRANSACTION_ID = b'FACEDACE'
transaction_pb = TransactionPB(id=TRANSACTION_ID)
now = datetime.datetime.utcnow().replace(tzinfo=UTC)
now_pb = _datetime_to_pb_timestamp(now)
response = CommitResponse(commit_timestamp=now_pb)
gax_api = _SpannerApi(
_begin_transaction_response=transaction_pb,
_commit_abort_count=1,
_commit_response=response,
)
database = _Database(self.DATABASE_NAME)
database.spanner_api = gax_api
session = self._make_one(database)
session._session_id = 'DEADBEEF'
called_with = []
def unit_of_work(txn, *args, **kw):
called_with.append((txn, args, kw))
txn.insert(TABLE_NAME, COLUMNS, VALUES)
return 'answer'
return_value = session.run_in_transaction(unit_of_work,
'abc',
some_arg='def')
self.assertEqual(len(called_with), 2)
for index, (txn, args, kw) in enumerate(called_with):
self.assertIsInstance(txn, Transaction)
self.assertEqual(return_value, 'answer')
self.assertEqual(args, ('abc', ))
self.assertEqual(kw, {'some_arg': 'def'})
def test_run_in_transaction_callback_raises_abort(self):
from google.cloud.proto.spanner.v1.transaction_pb2 import (
Transaction as TransactionPB)
from google.cloud.spanner.transaction import Transaction
TABLE_NAME = 'citizens'
COLUMNS = ['email', 'first_name', 'last_name', 'age']
VALUES = [
['*****@*****.**', 'Phred', 'Phlyntstone', 32],
['*****@*****.**', 'Bharney', 'Rhubble', 31],
]
TRANSACTION_ID = b'FACEDACE'
transaction_pb = TransactionPB(id=TRANSACTION_ID)
gax_api = _SpannerApi(
_begin_transaction_response=transaction_pb,
_rollback_response=None,
)
database = _Database(self.DATABASE_NAME)
database.spanner_api = gax_api
session = self._make_one(database)
session._session_id = 'DEADBEEF'
called_with = []
class Testing(Exception):
pass
def unit_of_work(txn, *args, **kw):
called_with.append((txn, args, kw))
txn.insert(TABLE_NAME, COLUMNS, VALUES)
raise Testing()
with self.assertRaises(Testing):
session.run_in_transaction(unit_of_work)
self.assertEqual(len(called_with), 1)
txn, args, kw = called_with[0]
self.assertIsInstance(txn, Transaction)
self.assertIsNone(txn.committed)
self.assertTrue(txn._rolled_back)
self.assertEqual(args, ())
self.assertEqual(kw, {})
def test_begin_ok(self):
from google.cloud.proto.spanner.v1.transaction_pb2 import (
Transaction as TransactionPB)
transaction_pb = TransactionPB(id=self.TRANSACTION_ID)
database = _Database()
api = database.spanner_api = _FauxSpannerAPI(
_begin_transaction_response=transaction_pb)
session = _Session(database)
transaction = self._makeOne(session)
txn_id = transaction.begin()
self.assertEqual(txn_id, self.TRANSACTION_ID)
self.assertEqual(transaction._id, self.TRANSACTION_ID)
session_id, txn_options, options = api._begun
self.assertEqual(session_id, session.name)
self.assertTrue(txn_options.HasField('read_write'))
self.assertEqual(options.kwargs['metadata'],
[('google-cloud-resource-prefix', database.name)])
def test_begin_ok_exact_strong(self):
from google.cloud.proto.spanner.v1.transaction_pb2 import (
Transaction as TransactionPB)
transaction_pb = TransactionPB(id=self.TRANSACTION_ID)
database = _Database()
api = database.spanner_api = _FauxSpannerAPI(
_begin_transaction_response=transaction_pb)
session = _Session(database)
snapshot = self._make_one(session, multi_use=True)
txn_id = snapshot.begin()
self.assertEqual(txn_id, self.TRANSACTION_ID)
self.assertEqual(snapshot._transaction_id, self.TRANSACTION_ID)
session_id, txn_options, options = api._begun
self.assertEqual(session_id, session.name)
self.assertTrue(txn_options.read_only.strong)
self.assertEqual(options.kwargs['metadata'],
[('google-cloud-resource-prefix', database.name)])