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55f930ef3d4e60bed02a2dad16e331fe42cfd12b
sqlalchemy/test/aaa_profiling/test_orm.py
T
Mike Bayer 1e278de4cc Post black reformatting 
Applied on top of a pure run of black -l 79 in
I7eda77fed3d8e73df84b3651fd6cfcfe858d4dc9,  this set of changes
resolves all remaining flake8 conditions for those codes
we have enabled in setup.cfg.

Included are resolutions for all remaining flake8 issues
including shadowed builtins, long lines, import order, unused
imports, duplicate imports, and docstring issues.

Change-Id: I4f72d3ba1380dd601610ff80b8fb06a2aff8b0fe
2019-01-06 18:23:11 -05:00

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from sqlalchemy import ForeignKey
from sqlalchemy import inspect
from sqlalchemy import Integer
from sqlalchemy import String
from sqlalchemy import testing
from sqlalchemy.orm import Bundle
from sqlalchemy.orm import configure_mappers
from sqlalchemy.orm import defaultload
from sqlalchemy.orm import defer
from sqlalchemy.orm import joinedload
from sqlalchemy.orm import Load
from sqlalchemy.orm import mapper
from sqlalchemy.orm import relationship
from sqlalchemy.orm import selectinload
from sqlalchemy.orm import Session
from sqlalchemy.orm import sessionmaker
from sqlalchemy.testing import fixtures
from sqlalchemy.testing import profiling
from sqlalchemy.testing.schema import Column
from sqlalchemy.testing.schema import Table
class MergeTest(fixtures.MappedTest):
@classmethod
def define_tables(cls, metadata):
Table(
"parent",
metadata,
Column(
"id", Integer, primary_key=True, test_needs_autoincrement=True
),
Column("data", String(20)),
)
Table(
"child",
metadata,
Column(
"id", Integer, primary_key=True, test_needs_autoincrement=True
),
Column("data", String(20)),
Column(
"parent_id", Integer, ForeignKey("parent.id"), nullable=False
),
)
@classmethod
def setup_classes(cls):
class Parent(cls.Basic):
pass
class Child(cls.Basic):
pass
@classmethod
def setup_mappers(cls):
Child, Parent, parent, child = (
cls.classes.Child,
cls.classes.Parent,
cls.tables.parent,
cls.tables.child,
)
mapper(
Parent,
parent,
properties={"children": relationship(Child, backref="parent")},
)
mapper(Child, child)
@classmethod
def insert_data(cls):
parent, child = cls.tables.parent, cls.tables.child
parent.insert().execute({"id": 1, "data": "p1"})
child.insert().execute({"id": 1, "data": "p1c1", "parent_id": 1})
def test_merge_no_load(self):
Parent = self.classes.Parent
sess = sessionmaker()()
sess2 = sessionmaker()()
p1 = sess.query(Parent).get(1)
p1.children
# down from 185 on this this is a small slice of a usually
# bigger operation so using a small variance
@profiling.function_call_count(variance=0.10)
def go1():
return sess2.merge(p1, load=False)
p2 = go1()
# third call, merge object already present. almost no calls.
@profiling.function_call_count(variance=0.10)
def go2():
return sess2.merge(p2, load=False)
go2()
def test_merge_load(self):
Parent = self.classes.Parent
sess = sessionmaker()()
sess2 = sessionmaker()()
p1 = sess.query(Parent).get(1)
p1.children
# preloading of collection took this down from 1728 to 1192
# using sqlite3 the C extension took it back up to approx. 1257
# (py2.6)
@profiling.function_call_count()
def go():
sess2.merge(p1)
go()
# one more time, count the SQL
def go2():
sess2.merge(p1)
sess2 = sessionmaker(testing.db)()
self.assert_sql_count(testing.db, go2, 2)
class LoadManyToOneFromIdentityTest(fixtures.MappedTest):
"""test overhead associated with many-to-one fetches.
Prior to the refactor of LoadLazyAttribute and
query._get(), the load from identity map took 2x
as many calls (65K calls here instead of around 33K)
to load 1000 related objects from the identity map.
"""
@classmethod
def define_tables(cls, metadata):
Table(
"parent",
metadata,
Column("id", Integer, primary_key=True),
Column("data", String(20)),
Column("child_id", Integer, ForeignKey("child.id")),
)
Table(
"child",
metadata,
Column("id", Integer, primary_key=True),
Column("data", String(20)),
)
@classmethod
def setup_classes(cls):
class Parent(cls.Basic):
pass
class Child(cls.Basic):
pass
@classmethod
def setup_mappers(cls):
Child, Parent, parent, child = (
cls.classes.Child,
cls.classes.Parent,
cls.tables.parent,
cls.tables.child,
)
mapper(Parent, parent, properties={"child": relationship(Child)})
mapper(Child, child)
@classmethod
def insert_data(cls):
parent, child = cls.tables.parent, cls.tables.child
child.insert().execute(
[{"id": i, "data": "c%d" % i} for i in range(1, 251)]
)
parent.insert().execute(
[
{
"id": i,
"data": "p%dc%d" % (i, (i % 250) + 1),
"child_id": (i % 250) + 1,
}
for i in range(1, 1000)
]
)
def test_many_to_one_load_no_identity(self):
Parent = self.classes.Parent
sess = Session()
parents = sess.query(Parent).all()
@profiling.function_call_count(variance=0.2)
def go():
for p in parents:
p.child
go()
def test_many_to_one_load_identity(self):
Parent, Child = self.classes.Parent, self.classes.Child
sess = Session()
parents = sess.query(Parent).all()
children = sess.query(Child).all()
children # strong reference
@profiling.function_call_count()
def go():
for p in parents:
p.child
go()
class MergeBackrefsTest(fixtures.MappedTest):
@classmethod
def define_tables(cls, metadata):
Table(
"a",
metadata,
Column("id", Integer, primary_key=True),
Column("c_id", Integer, ForeignKey("c.id")),
)
Table(
"b",
metadata,
Column("id", Integer, primary_key=True),
Column("a_id", Integer, ForeignKey("a.id")),
)
Table("c", metadata, Column("id", Integer, primary_key=True))
Table(
"d",
metadata,
Column("id", Integer, primary_key=True),
Column("a_id", Integer, ForeignKey("a.id")),
)
@classmethod
def setup_classes(cls):
class A(cls.Basic):
pass
class B(cls.Basic):
pass
class C(cls.Basic):
pass
class D(cls.Basic):
pass
@classmethod
def setup_mappers(cls):
A, B, C, D = cls.classes.A, cls.classes.B, cls.classes.C, cls.classes.D
a, b, c, d = cls.tables.a, cls.tables.b, cls.tables.c, cls.tables.d
mapper(
A,
a,
properties={
"bs": relationship(B, backref="a"),
"c": relationship(C, backref="as"),
"ds": relationship(D, backref="a"),
},
)
mapper(B, b)
mapper(C, c)
mapper(D, d)
@classmethod
def insert_data(cls):
A, B, C, D = cls.classes.A, cls.classes.B, cls.classes.C, cls.classes.D
s = Session()
s.add_all(
[
A(
id=i,
bs=[B(id=(i * 5) + j) for j in range(1, 5)],
c=C(id=i),
ds=[D(id=(i * 5) + j) for j in range(1, 5)],
)
for i in range(1, 5)
]
)
s.commit()
@profiling.function_call_count(variance=0.10)
def test_merge_pending_with_all_pks(self):
A, B, C, D = (
self.classes.A,
self.classes.B,
self.classes.C,
self.classes.D,
)
s = Session()
for a in [
A(
id=i,
bs=[B(id=(i * 5) + j) for j in range(1, 5)],
c=C(id=i),
ds=[D(id=(i * 5) + j) for j in range(1, 5)],
)
for i in range(1, 5)
]:
s.merge(a)
class DeferOptionsTest(fixtures.MappedTest):
@classmethod
def define_tables(cls, metadata):
Table(
"a",
metadata,
Column("id", Integer, primary_key=True),
Column("x", String(5)),
Column("y", String(5)),
Column("z", String(5)),
Column("q", String(5)),
Column("p", String(5)),
Column("r", String(5)),
)
@classmethod
def setup_classes(cls):
class A(cls.Basic):
pass
@classmethod
def setup_mappers(cls):
A = cls.classes.A
a = cls.tables.a
mapper(A, a)
@classmethod
def insert_data(cls):
A = cls.classes.A
s = Session()
s.add_all(
[
A(
id=i,
**dict(
(letter, "%s%d" % (letter, i))
for letter in ["x", "y", "z", "p", "q", "r"]
)
)
for i in range(1, 1001)
]
)
s.commit()
@profiling.function_call_count(variance=0.10)
def test_baseline(self):
# as of [ticket:2778], this is at 39025
A = self.classes.A
s = Session()
s.query(A).all()
@profiling.function_call_count(variance=0.10)
def test_defer_many_cols(self):
# with [ticket:2778], this goes from 50805 to 32817,
# as it should be fewer function calls than the baseline
A = self.classes.A
s = Session()
s.query(A).options(
*[defer(letter) for letter in ["x", "y", "z", "p", "q", "r"]]
).all()
class AttributeOverheadTest(fixtures.MappedTest):
@classmethod
def define_tables(cls, metadata):
Table(
"parent",
metadata,
Column(
"id", Integer, primary_key=True, test_needs_autoincrement=True
),
Column("data", String(20)),
)
Table(
"child",
metadata,
Column(
"id", Integer, primary_key=True, test_needs_autoincrement=True
),
Column("data", String(20)),
Column(
"parent_id", Integer, ForeignKey("parent.id"), nullable=False
),
)
@classmethod
def setup_classes(cls):
class Parent(cls.Basic):
pass
class Child(cls.Basic):
pass
@classmethod
def setup_mappers(cls):
Child, Parent, parent, child = (
cls.classes.Child,
cls.classes.Parent,
cls.tables.parent,
cls.tables.child,
)
mapper(
Parent,
parent,
properties={"children": relationship(Child, backref="parent")},
)
mapper(Child, child)
def test_attribute_set(self):
Parent, Child = self.classes.Parent, self.classes.Child
p1 = Parent()
c1 = Child()
@profiling.function_call_count()
def go():
for i in range(30):
c1.parent = p1
c1.parent = None
c1.parent = p1
del c1.parent
go()
def test_collection_append_remove(self):
Parent, Child = self.classes.Parent, self.classes.Child
p1 = Parent()
children = [Child() for i in range(100)]
@profiling.function_call_count()
def go():
for child in children:
p1.children.append(child)
for child in children:
p1.children.remove(child)
go()
class SessionTest(fixtures.MappedTest):
@classmethod
def define_tables(cls, metadata):
Table(
"parent",
metadata,
Column(
"id", Integer, primary_key=True, test_needs_autoincrement=True
),
Column("data", String(20)),
)
Table(
"child",
metadata,
Column(
"id", Integer, primary_key=True, test_needs_autoincrement=True
),
Column("data", String(20)),
Column(
"parent_id", Integer, ForeignKey("parent.id"), nullable=False
),
)
@classmethod
def setup_classes(cls):
class Parent(cls.Basic):
pass
class Child(cls.Basic):
pass
@classmethod
def setup_mappers(cls):
Child, Parent, parent, child = (
cls.classes.Child,
cls.classes.Parent,
cls.tables.parent,
cls.tables.child,
)
mapper(
Parent,
parent,
properties={"children": relationship(Child, backref="parent")},
)
mapper(Child, child)
def test_expire_lots(self):
Parent, Child = self.classes.Parent, self.classes.Child
obj = [
Parent(children=[Child() for j in range(10)]) for i in range(10)
]
sess = Session()
sess.add_all(obj)
sess.flush()
@profiling.function_call_count()
def go():
sess.expire_all()
go()
class QueryTest(fixtures.MappedTest):
@classmethod
def define_tables(cls, metadata):
Table(
"parent",
metadata,
Column(
"id", Integer, primary_key=True, test_needs_autoincrement=True
),
Column("data1", String(20)),
Column("data2", String(20)),
Column("data3", String(20)),
Column("data4", String(20)),
)
@classmethod
def setup_classes(cls):
class Parent(cls.Basic):
pass
@classmethod
def setup_mappers(cls):
Parent = cls.classes.Parent
parent = cls.tables.parent
mapper(Parent, parent)
def _fixture(self):
Parent = self.classes.Parent
sess = Session()
sess.add_all(
[
Parent(data1="d1", data2="d2", data3="d3", data4="d4")
for i in range(10)
]
)
sess.commit()
sess.close()
def test_query_cols(self):
Parent = self.classes.Parent
self._fixture()
sess = Session()
@profiling.function_call_count()
def go():
for i in range(10):
q = sess.query(
Parent.data1, Parent.data2, Parent.data3, Parent.data4
)
q.all()
go()
class SelectInEagerLoadTest(fixtures.MappedTest):
"""basic test for selectin() loading, which uses a baked query.
if the baked query starts spoiling due to some bug in cache keys,
this callcount blows up.
"""
@classmethod
def define_tables(cls, metadata):
Table(
"a",
metadata,
Column(
"id", Integer, primary_key=True, test_needs_autoincrement=True
),
Column("x", Integer),
Column("y", Integer),
)
Table(
"b",
metadata,
Column(
"id", Integer, primary_key=True, test_needs_autoincrement=True
),
Column("a_id", ForeignKey("a.id")),
Column("x", Integer),
Column("y", Integer),
)
Table(
"c",
metadata,
Column(
"id", Integer, primary_key=True, test_needs_autoincrement=True
),
Column("b_id", ForeignKey("b.id")),
Column("x", Integer),
Column("y", Integer),
)
@classmethod
def setup_classes(cls):
class A(cls.Basic):
pass
class B(cls.Basic):
pass
class C(cls.Basic):
pass
@classmethod
def setup_mappers(cls):
A, B, C = cls.classes("A", "B", "C")
a, b, c = cls.tables("a", "b", "c")
mapper(A, a, properties={"bs": relationship(B)})
mapper(B, b, properties={"cs": relationship(C)})
mapper(C, c)
@classmethod
def insert_data(cls):
A, B, C = cls.classes("A", "B", "C")
s = Session()
s.add(A(bs=[B(cs=[C()]), B(cs=[C()])]))
s.commit()
def test_round_trip_results(self):
A, B, C = self.classes("A", "B", "C")
sess = Session()
q = sess.query(A).options(selectinload(A.bs).selectinload(B.cs))
@profiling.function_call_count()
def go():
for i in range(100):
obj = q.all()
list(obj)
sess.close()
go()
class JoinedEagerLoadTest(fixtures.MappedTest):
@classmethod
def define_tables(cls, metadata):
def make_some_columns():
return [Column("c%d" % i, Integer) for i in range(10)]
Table(
"a",
metadata,
Column(
"id", Integer, primary_key=True, test_needs_autoincrement=True
),
*make_some_columns()
)
Table(
"b",
metadata,
Column(
"id", Integer, primary_key=True, test_needs_autoincrement=True
),
Column("a_id", ForeignKey("a.id")),
*make_some_columns()
)
Table(
"c",
metadata,
Column(
"id", Integer, primary_key=True, test_needs_autoincrement=True
),
Column("b_id", ForeignKey("b.id")),
*make_some_columns()
)
Table(
"d",
metadata,
Column(
"id", Integer, primary_key=True, test_needs_autoincrement=True
),
Column("c_id", ForeignKey("c.id")),
*make_some_columns()
)
Table(
"e",
metadata,
Column(
"id", Integer, primary_key=True, test_needs_autoincrement=True
),
Column("a_id", ForeignKey("a.id")),
*make_some_columns()
)
Table(
"f",
metadata,
Column(
"id", Integer, primary_key=True, test_needs_autoincrement=True
),
Column("e_id", ForeignKey("e.id")),
*make_some_columns()
)
Table(
"g",
metadata,
Column(
"id", Integer, primary_key=True, test_needs_autoincrement=True
),
Column("e_id", ForeignKey("e.id")),
*make_some_columns()
)
@classmethod
def setup_classes(cls):
class A(cls.Basic):
pass
class B(cls.Basic):
pass
class C(cls.Basic):
pass
class D(cls.Basic):
pass
class E(cls.Basic):
pass
class F(cls.Basic):
pass
class G(cls.Basic):
pass
@classmethod
def setup_mappers(cls):
A, B, C, D, E, F, G = cls.classes("A", "B", "C", "D", "E", "F", "G")
a, b, c, d, e, f, g = cls.tables("a", "b", "c", "d", "e", "f", "g")
mapper(A, a, properties={"bs": relationship(B), "es": relationship(E)})
mapper(B, b, properties={"cs": relationship(C)})
mapper(C, c, properties={"ds": relationship(D)})
mapper(D, d)
mapper(E, e, properties={"fs": relationship(F), "gs": relationship(G)})
mapper(F, f)
mapper(G, g)
@classmethod
def insert_data(cls):
A, B, C, D, E, F, G = cls.classes("A", "B", "C", "D", "E", "F", "G")
s = Session()
s.add(
A(
bs=[B(cs=[C(ds=[D()])]), B(cs=[C()])],
es=[E(fs=[F()], gs=[G()])],
)
)
s.commit()
def test_build_query(self):
A, B, C, D, E, F, G = self.classes("A", "B", "C", "D", "E", "F", "G")
sess = Session()
@profiling.function_call_count()
def go():
for i in range(100):
q = sess.query(A).options(
joinedload(A.bs).joinedload(B.cs).joinedload(C.ds),
joinedload(A.es).joinedload(E.fs),
defaultload(A.es).joinedload(E.gs),
)
q._compile_context()
go()
def test_fetch_results(self):
A, B, C, D, E, F, G = self.classes("A", "B", "C", "D", "E", "F", "G")
sess = Session()
q = sess.query(A).options(
joinedload(A.bs).joinedload(B.cs).joinedload(C.ds),
joinedload(A.es).joinedload(E.fs),
defaultload(A.es).joinedload(E.gs),
)
context = q._compile_context()
@profiling.function_call_count()
def go():
for i in range(100):
obj = q._execute_and_instances(context)
list(obj)
sess.close()
go()
class BranchedOptionTest(fixtures.MappedTest):
@classmethod
def define_tables(cls, metadata):
def make_some_columns():
return [Column("c%d" % i, Integer) for i in range(2)]
Table(
"a",
metadata,
Column(
"id", Integer, primary_key=True, test_needs_autoincrement=True
),
*make_some_columns()
)
Table(
"b",
metadata,
Column(
"id", Integer, primary_key=True, test_needs_autoincrement=True
),
Column("a_id", ForeignKey("a.id")),
*make_some_columns()
)
Table(
"c",
metadata,
Column(
"id", Integer, primary_key=True, test_needs_autoincrement=True
),
Column("b_id", ForeignKey("b.id")),
*make_some_columns()
)
Table(
"d",
metadata,
Column(
"id", Integer, primary_key=True, test_needs_autoincrement=True
),
Column("b_id", ForeignKey("b.id")),
*make_some_columns()
)
Table(
"e",
metadata,
Column(
"id", Integer, primary_key=True, test_needs_autoincrement=True
),
Column("b_id", ForeignKey("b.id")),
*make_some_columns()
)
Table(
"f",
metadata,
Column(
"id", Integer, primary_key=True, test_needs_autoincrement=True
),
Column("b_id", ForeignKey("b.id")),
*make_some_columns()
)
Table(
"g",
metadata,
Column(
"id", Integer, primary_key=True, test_needs_autoincrement=True
),
Column("a_id", ForeignKey("a.id")),
*make_some_columns()
)
@classmethod
def setup_classes(cls):
class A(cls.Basic):
pass
class B(cls.Basic):
pass
class C(cls.Basic):
pass
class D(cls.Basic):
pass
class E(cls.Basic):
pass
class F(cls.Basic):
pass
class G(cls.Basic):
pass
@classmethod
def setup_mappers(cls):
A, B, C, D, E, F, G = cls.classes("A", "B", "C", "D", "E", "F", "G")
a, b, c, d, e, f, g = cls.tables("a", "b", "c", "d", "e", "f", "g")
mapper(A, a, properties={"bs": relationship(B), "gs": relationship(G)})
mapper(
B,
b,
properties={
"cs": relationship(C),
"ds": relationship(D),
"es": relationship(E),
"fs": relationship(F),
},
)
mapper(C, c)
mapper(D, d)
mapper(E, e)
mapper(F, f)
mapper(G, g)
configure_mappers()
def test_generate_cache_key_unbound_branching(self):
A, B, C, D, E, F, G = self.classes("A", "B", "C", "D", "E", "F", "G")
base = joinedload(A.bs)
opts = [
base.joinedload(B.cs),
base.joinedload(B.ds),
base.joinedload(B.es),
base.joinedload(B.fs),
]
cache_path = inspect(A)._path_registry
@profiling.function_call_count()
def go():
for opt in opts:
opt._generate_cache_key(cache_path)
go()
def test_generate_cache_key_bound_branching(self):
A, B, C, D, E, F, G = self.classes("A", "B", "C", "D", "E", "F", "G")
base = Load(A).joinedload(A.bs)
opts = [
base.joinedload(B.cs),
base.joinedload(B.ds),
base.joinedload(B.es),
base.joinedload(B.fs),
]
cache_path = inspect(A)._path_registry
@profiling.function_call_count()
def go():
for opt in opts:
opt._generate_cache_key(cache_path)
go()
def test_query_opts_unbound_branching(self):
A, B, C, D, E, F, G = self.classes("A", "B", "C", "D", "E", "F", "G")
base = joinedload(A.bs)
opts = [
base.joinedload(B.cs),
base.joinedload(B.ds),
base.joinedload(B.es),
base.joinedload(B.fs),
]
q = Session().query(A)
@profiling.function_call_count()
def go():
q.options(*opts)
go()
def test_query_opts_key_bound_branching(self):
A, B, C, D, E, F, G = self.classes("A", "B", "C", "D", "E", "F", "G")
base = Load(A).joinedload(A.bs)
opts = [
base.joinedload(B.cs),
base.joinedload(B.ds),
base.joinedload(B.es),
base.joinedload(B.fs),
]
q = Session().query(A)
@profiling.function_call_count()
def go():
q.options(*opts)
go()
class AnnotatedOverheadTest(fixtures.MappedTest):
@classmethod
def define_tables(cls, metadata):
Table(
"a",
metadata,
Column("id", Integer, primary_key=True),
Column("data", String(50)),
)
@classmethod
def setup_classes(cls):
class A(cls.Basic):
pass
@classmethod
def setup_mappers(cls):
A = cls.classes.A
a = cls.tables.a
mapper(A, a)
@classmethod
def insert_data(cls):
A = cls.classes.A
s = Session()
s.add_all([A(data="asdf") for i in range(5)])
s.commit()
def test_no_bundle(self):
A = self.classes.A
s = Session()
q = s.query(A).select_from(A)
@profiling.function_call_count()
def go():
for i in range(100):
q.all()
go()
def test_no_entity_wo_annotations(self):
A = self.classes.A
a = self.tables.a
s = Session()
q = s.query(a.c.data).select_from(A)
@profiling.function_call_count()
def go():
for i in range(100):
q.all()
go()
def test_no_entity_w_annotations(self):
A = self.classes.A
s = Session()
q = s.query(A.data).select_from(A)
@profiling.function_call_count()
def go():
for i in range(100):
q.all()
go()
def test_entity_w_annotations(self):
A = self.classes.A
s = Session()
q = s.query(A, A.data).select_from(A)
@profiling.function_call_count()
def go():
for i in range(100):
q.all()
go()
def test_entity_wo_annotations(self):
A = self.classes.A
a = self.tables.a
s = Session()
q = s.query(A, a.c.data).select_from(A)
@profiling.function_call_count()
def go():
for i in range(100):
q.all()
go()
def test_no_bundle_wo_annotations(self):
A = self.classes.A
a = self.tables.a
s = Session()
q = s.query(a.c.data, A).select_from(A)
@profiling.function_call_count()
def go():
for i in range(100):
q.all()
go()
def test_no_bundle_w_annotations(self):
A = self.classes.A
s = Session()
q = s.query(A.data, A).select_from(A)
@profiling.function_call_count()
def go():
for i in range(100):
q.all()
go()
def test_bundle_wo_annotation(self):
A = self.classes.A
a = self.tables.a
s = Session()
q = s.query(Bundle("ASdf", a.c.data), A).select_from(A)
@profiling.function_call_count()
def go():
for i in range(100):
q.all()
go()
def test_bundle_w_annotation(self):
A = self.classes.A
s = Session()
q = s.query(Bundle("ASdf", A.data), A).select_from(A)
@profiling.function_call_count()
def go():
for i in range(100):
q.all()
go()
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