def _make_txn_selector(self):
"""Helper for :meth:`read`."""
if self._transaction_id is not None:
return TransactionSelector(id=self._transaction_id)
if self._read_timestamp:
key = "read_timestamp"
value = _datetime_to_pb_timestamp(self._read_timestamp)
elif self._min_read_timestamp:
key = "min_read_timestamp"
value = _datetime_to_pb_timestamp(self._min_read_timestamp)
elif self._max_staleness:
key = "max_staleness"
value = _timedelta_to_duration_pb(self._max_staleness)
elif self._exact_staleness:
key = "exact_staleness"
value = _timedelta_to_duration_pb(self._exact_staleness)
else:
key = "strong"
value = True
options = TransactionOptions(read_only=TransactionOptions.ReadOnly(
**{key: value}))
if self._multi_use:
return TransactionSelector(begin=options)
else:
return TransactionSelector(single_use=options)
def test_begin_ok_exact_staleness(self):
from google.protobuf.duration_pb2 import Duration
from google.cloud.spanner_v1.proto.transaction_pb2 import (
Transaction as TransactionPB, TransactionOptions)
transaction_pb = TransactionPB(id=TXN_ID)
database = _Database()
api = database.spanner_api = self._make_spanner_api()
api.begin_transaction.return_value = transaction_pb
duration = self._makeDuration(seconds=SECONDS, microseconds=MICROS)
session = _Session(database)
snapshot = self._make_one(session,
exact_staleness=duration,
multi_use=True)
txn_id = snapshot.begin()
self.assertEqual(txn_id, TXN_ID)
self.assertEqual(snapshot._transaction_id, TXN_ID)
expected_duration = Duration(seconds=SECONDS, nanos=MICROS * 1000)
expected_txn_options = TransactionOptions(
read_only=TransactionOptions.ReadOnly(
exact_staleness=expected_duration))
api.begin_transaction.assert_called_once_with(
session.name,
expected_txn_options,
metadata=[('google-cloud-resource-prefix', database.name)])
def test_begin_ok_exact_strong(self):
from google.cloud.spanner_v1.proto.transaction_pb2 import (
Transaction as TransactionPB,
TransactionOptions,
)
transaction_pb = TransactionPB(id=TXN_ID)
database = _Database()
api = database.spanner_api = self._make_spanner_api()
api.begin_transaction.return_value = transaction_pb
session = _Session(database)
snapshot = self._make_one(session, multi_use=True)
txn_id = snapshot.begin()
self.assertEqual(txn_id, TXN_ID)
self.assertEqual(snapshot._transaction_id, TXN_ID)
expected_txn_options = TransactionOptions(
read_only=TransactionOptions.ReadOnly(strong=True))
api.begin_transaction.assert_called_once_with(
session.name,
expected_txn_options,
metadata=[("google-cloud-resource-prefix", database.name)],
)
def _make_txn_selector(self):
from google.cloud.spanner_v1.proto.transaction_pb2 import (
TransactionOptions, TransactionSelector)
if self._transaction_id:
return TransactionSelector(id=self._transaction_id)
options = TransactionOptions(
read_only=TransactionOptions.ReadOnly(strong=True))
if self._multi_use:
return TransactionSelector(begin=options)
return TransactionSelector(single_use=options)
def _execute_sql_helper(self,
multi_use,
first=True,
count=0,
partition=None,
sql_count=0):
from google.protobuf.struct_pb2 import Struct
from google.cloud.spanner_v1.proto.result_set_pb2 import (
PartialResultSet, ResultSetMetadata, ResultSetStats)
from google.cloud.spanner_v1.proto.transaction_pb2 import (
TransactionSelector, TransactionOptions)
from google.cloud.spanner_v1.proto.type_pb2 import Type, StructType
from google.cloud.spanner_v1.proto.type_pb2 import STRING, INT64
from google.cloud.spanner_v1._helpers import _make_value_pb
VALUES = [
[u'bharney', u'rhubbyl', 31],
[u'phred', u'phlyntstone', 32],
]
VALUE_PBS = [[_make_value_pb(item) for item in row] for row in VALUES]
MODE = 2 # PROFILE
struct_type_pb = StructType(fields=[
StructType.Field(name='first_name', type=Type(code=STRING)),
StructType.Field(name='last_name', type=Type(code=STRING)),
StructType.Field(name='age', type=Type(code=INT64)),
])
metadata_pb = ResultSetMetadata(row_type=struct_type_pb)
stats_pb = ResultSetStats(query_stats=Struct(
fields={
'rows_returned': _make_value_pb(2),
}))
result_sets = [
PartialResultSet(values=VALUE_PBS[0], metadata=metadata_pb),
PartialResultSet(values=VALUE_PBS[1], stats=stats_pb),
]
iterator = _MockIterator(*result_sets)
database = _Database()
api = database.spanner_api = self._make_spanner_api()
api.execute_streaming_sql.return_value = iterator
session = _Session(database)
derived = self._makeDerived(session)
derived._multi_use = multi_use
derived._read_request_count = count
derived._execute_sql_count = sql_count
if not first:
derived._transaction_id = TXN_ID
result_set = derived.execute_sql(SQL_QUERY_WITH_PARAM,
PARAMS,
PARAM_TYPES,
query_mode=MODE,
partition=partition)
self.assertEqual(derived._read_request_count, count + 1)
if multi_use:
self.assertIs(result_set._source, derived)
else:
self.assertIsNone(result_set._source)
self.assertEqual(list(result_set), VALUES)
self.assertEqual(result_set.metadata, metadata_pb)
self.assertEqual(result_set.stats, stats_pb)
txn_options = TransactionOptions(read_only=TransactionOptions.ReadOnly(
strong=True))
if multi_use:
if first:
expected_transaction = TransactionSelector(begin=txn_options)
else:
expected_transaction = TransactionSelector(id=TXN_ID)
else:
expected_transaction = TransactionSelector(single_use=txn_options)
expected_params = Struct(fields={
key: _make_value_pb(value)
for (key, value) in PARAMS.items()
})
api.execute_streaming_sql.assert_called_once_with(
self.SESSION_NAME,
SQL_QUERY_WITH_PARAM,
transaction=expected_transaction,
params=expected_params,
param_types=PARAM_TYPES,
query_mode=MODE,
partition_token=partition,
seqno=sql_count,
metadata=[('google-cloud-resource-prefix', database.name)],
)
self.assertEqual(derived._execute_sql_count, sql_count + 1)
def _read_helper(self, multi_use, first=True, count=0, partition=None):
from google.protobuf.struct_pb2 import Struct
from google.cloud.spanner_v1.proto.result_set_pb2 import (
PartialResultSet, ResultSetMetadata, ResultSetStats)
from google.cloud.spanner_v1.proto.transaction_pb2 import (
TransactionSelector, TransactionOptions)
from google.cloud.spanner_v1.proto.type_pb2 import Type, StructType
from google.cloud.spanner_v1.proto.type_pb2 import STRING, INT64
from google.cloud.spanner_v1.keyset import KeySet
from google.cloud.spanner_v1._helpers import _make_value_pb
VALUES = [
[u'bharney', 31],
[u'phred', 32],
]
VALUE_PBS = [[_make_value_pb(item) for item in row] for row in VALUES]
struct_type_pb = StructType(fields=[
StructType.Field(name='name', type=Type(code=STRING)),
StructType.Field(name='age', type=Type(code=INT64)),
])
metadata_pb = ResultSetMetadata(row_type=struct_type_pb)
stats_pb = ResultSetStats(query_stats=Struct(
fields={
'rows_returned': _make_value_pb(2),
}))
result_sets = [
PartialResultSet(values=VALUE_PBS[0], metadata=metadata_pb),
PartialResultSet(values=VALUE_PBS[1], stats=stats_pb),
]
KEYS = [['*****@*****.**'], ['*****@*****.**']]
keyset = KeySet(keys=KEYS)
INDEX = 'email-address-index'
LIMIT = 20
database = _Database()
api = database.spanner_api = self._make_spanner_api()
api.streaming_read.return_value = _MockIterator(*result_sets)
session = _Session(database)
derived = self._makeDerived(session)
derived._multi_use = multi_use
derived._read_request_count = count
if not first:
derived._transaction_id = TXN_ID
if partition is not None: # 'limit' and 'partition' incompatible
result_set = derived.read(TABLE_NAME,
COLUMNS,
keyset,
index=INDEX,
partition=partition)
else:
result_set = derived.read(TABLE_NAME,
COLUMNS,
keyset,
index=INDEX,
limit=LIMIT)
self.assertEqual(derived._read_request_count, count + 1)
if multi_use:
self.assertIs(result_set._source, derived)
else:
self.assertIsNone(result_set._source)
self.assertEqual(list(result_set), VALUES)
self.assertEqual(result_set.metadata, metadata_pb)
self.assertEqual(result_set.stats, stats_pb)
txn_options = TransactionOptions(read_only=TransactionOptions.ReadOnly(
strong=True))
if multi_use:
if first:
expected_transaction = TransactionSelector(begin=txn_options)
else:
expected_transaction = TransactionSelector(id=TXN_ID)
else:
expected_transaction = TransactionSelector(single_use=txn_options)
if partition is not None:
expected_limit = 0
else:
expected_limit = LIMIT
api.streaming_read.assert_called_once_with(
self.SESSION_NAME,
TABLE_NAME,
COLUMNS,
keyset._to_pb(),
transaction=expected_transaction,
index=INDEX,
limit=expected_limit,
partition_token=partition,
metadata=[('google-cloud-resource-prefix', database.name)],
)
def _execute_sql_helper(
self,
multi_use,
first=True,
count=0,
partition=None,
sql_count=0,
query_options=None,
timeout=google.api_core.gapic_v1.method.DEFAULT,
retry=google.api_core.gapic_v1.method.DEFAULT,
):
from google.protobuf.struct_pb2 import Struct
from google.cloud.spanner_v1.proto.result_set_pb2 import (
PartialResultSet,
ResultSetMetadata,
ResultSetStats,
)
from google.cloud.spanner_v1.proto.transaction_pb2 import (
TransactionSelector,
TransactionOptions,
)
from google.cloud.spanner_v1.proto.type_pb2 import Type, StructType
from google.cloud.spanner_v1.proto.type_pb2 import STRING, INT64
from google.cloud.spanner_v1._helpers import (
_make_value_pb,
_merge_query_options,
)
VALUES = [[u"bharney", u"rhubbyl", 31], [u"phred", u"phlyntstone", 32]]
VALUE_PBS = [[_make_value_pb(item) for item in row] for row in VALUES]
MODE = 2 # PROFILE
struct_type_pb = StructType(
fields=[
StructType.Field(name="first_name", type=Type(code=STRING)),
StructType.Field(name="last_name", type=Type(code=STRING)),
StructType.Field(name="age", type=Type(code=INT64)),
]
)
metadata_pb = ResultSetMetadata(row_type=struct_type_pb)
stats_pb = ResultSetStats(
query_stats=Struct(fields={"rows_returned": _make_value_pb(2)})
)
result_sets = [
PartialResultSet(values=VALUE_PBS[0], metadata=metadata_pb),
PartialResultSet(values=VALUE_PBS[1], stats=stats_pb),
]
iterator = _MockIterator(*result_sets)
database = _Database()
api = database.spanner_api = self._make_spanner_api()
api.execute_streaming_sql.return_value = iterator
session = _Session(database)
derived = self._makeDerived(session)
derived._multi_use = multi_use
derived._read_request_count = count
derived._execute_sql_count = sql_count
if not first:
derived._transaction_id = TXN_ID
result_set = derived.execute_sql(
SQL_QUERY_WITH_PARAM,
PARAMS,
PARAM_TYPES,
query_mode=MODE,
query_options=query_options,
partition=partition,
retry=retry,
timeout=timeout,
)
self.assertEqual(derived._read_request_count, count + 1)
if multi_use:
self.assertIs(result_set._source, derived)
else:
self.assertIsNone(result_set._source)
self.assertEqual(list(result_set), VALUES)
self.assertEqual(result_set.metadata, metadata_pb)
self.assertEqual(result_set.stats, stats_pb)
txn_options = TransactionOptions(
read_only=TransactionOptions.ReadOnly(strong=True)
)
if multi_use:
if first:
expected_transaction = TransactionSelector(begin=txn_options)
else:
expected_transaction = TransactionSelector(id=TXN_ID)
else:
expected_transaction = TransactionSelector(single_use=txn_options)
expected_params = Struct(
fields={key: _make_value_pb(value) for (key, value) in PARAMS.items()}
)
expected_query_options = database._instance._client._query_options
if query_options:
expected_query_options = _merge_query_options(
expected_query_options, query_options
)
api.execute_streaming_sql.assert_called_once_with(
self.SESSION_NAME,
SQL_QUERY_WITH_PARAM,
transaction=expected_transaction,
params=expected_params,
param_types=PARAM_TYPES,
query_mode=MODE,
query_options=expected_query_options,
partition_token=partition,
seqno=sql_count,
metadata=[("google-cloud-resource-prefix", database.name)],
timeout=timeout,
retry=retry,
)
self.assertEqual(derived._execute_sql_count, sql_count + 1)
self.assertSpanAttributes(
"CloudSpanner.ReadWriteTransaction",
status=StatusCanonicalCode.OK,
attributes=dict(BASE_ATTRIBUTES, **{"db.statement": SQL_QUERY_WITH_PARAM}),
)
