Python fields.ListOfObjectsField方法代碼示例

# 需要導入模塊: from oslo_versionedobjects import fields [as 別名]
# 或者: from oslo_versionedobjects.fields import ListOfObjectsField [as 別名]
def test_obj_make_list(self):
        @base.VersionedObjectRegistry.register
        class MyList(base.ObjectListBase, base.VersionedObject):
            fields = {
                'objects': fields.ListOfObjectsField('MyObj'),
            }

        db_objs = [{'foo': 1, 'bar': 'baz', 'missing': 'banana'},
                   {'foo': 2, 'bar': 'bat', 'missing': 'apple'},
                   ]
        mylist = base.obj_make_list('ctxt', MyList(), MyObj, db_objs)
        self.assertEqual(2, len(mylist))
        self.assertEqual('ctxt', mylist._context)
        for index, item in enumerate(mylist):
            self.assertEqual(db_objs[index]['foo'], item.foo)
            self.assertEqual(db_objs[index]['bar'], item.bar)
            self.assertEqual(db_objs[index]['missing'], item.missing) 

# 需要導入模塊: from oslo_versionedobjects import fields [as 別名]
# 或者: from oslo_versionedobjects.fields import ListOfObjectsField [as 別名]
def test_serialization(self):
        @base.VersionedObjectRegistry.register
        class Foo(base.ObjectListBase, base.VersionedObject):
            fields = {'objects': fields.ListOfObjectsField('Bar')}

        @base.VersionedObjectRegistry.register
        class Bar(base.VersionedObject):
            fields = {'foo': fields.Field(fields.String())}

        obj = Foo(objects=[])
        for i in 'abc':
            bar = Bar(foo=i)
            obj.objects.append(bar)

        obj2 = base.VersionedObject.obj_from_primitive(obj.obj_to_primitive())
        self.assertFalse(obj is obj2)
        self.assertEqual([x.foo for x in obj],
                         [y.foo for y in obj2]) 

# 需要導入模塊: from oslo_versionedobjects import fields [as 別名]
# 或者: from oslo_versionedobjects.fields import ListOfObjectsField [as 別名]
def test_obj_make_compatible_child_versions(self):
        @base.VersionedObjectRegistry.register
        class MyElement(base.VersionedObject):
            fields = {'foo': fields.IntegerField()}

        @base.VersionedObjectRegistry.register
        class Foo(base.ObjectListBase, base.VersionedObject):
            VERSION = '1.1'
            fields = {'objects': fields.ListOfObjectsField('MyElement')}
            child_versions = {'1.0': '1.0', '1.1': '1.0'}

        subobj = MyElement(foo=1)
        obj = Foo(objects=[subobj])
        primitive = obj.obj_to_primitive()['versioned_object.data']

        with mock.patch.object(subobj, 'obj_make_compatible') as mock_compat:
            obj.obj_make_compatible(copy.copy(primitive), '1.1')
            self.assertTrue(mock_compat.called) 

# 需要導入模塊: from oslo_versionedobjects import fields [as 別名]
# 或者: from oslo_versionedobjects.fields import ListOfObjectsField [as 別名]
def test_obj_make_compatible_obj_relationships(self):
        @base.VersionedObjectRegistry.register
        class MyElement(base.VersionedObject):
            fields = {'foo': fields.IntegerField()}

        @base.VersionedObjectRegistry.register
        class Bar(base.ObjectListBase, base.VersionedObject):
            VERSION = '1.1'
            fields = {'objects': fields.ListOfObjectsField('MyElement')}
            obj_relationships = {
                'objects': [('1.0', '1.0'), ('1.1', '1.0')]
            }

        subobj = MyElement(foo=1)
        obj = Bar(objects=[subobj])
        primitive = obj.obj_to_primitive()['versioned_object.data']

        with mock.patch.object(subobj, 'obj_make_compatible') as mock_compat:
            obj.obj_make_compatible(copy.copy(primitive), '1.1')
            self.assertTrue(mock_compat.called) 

# 需要導入模塊: from oslo_versionedobjects import fields [as 別名]
# 或者: from oslo_versionedobjects.fields import ListOfObjectsField [as 別名]
def test_obj_make_compatible_no_relationships(self):
        @base.VersionedObjectRegistry.register
        class MyElement(base.VersionedObject):
            fields = {'foo': fields.IntegerField()}

        @base.VersionedObjectRegistry.register
        class Baz(base.ObjectListBase, base.VersionedObject):
            VERSION = '1.1'
            fields = {'objects': fields.ListOfObjectsField('MyElement')}

        subobj = MyElement(foo=1)
        obj = Baz(objects=[subobj])
        primitive = obj.obj_to_primitive()['versioned_object.data']

        with mock.patch.object(subobj, 'obj_make_compatible') as mock_compat:
            obj.obj_make_compatible(copy.copy(primitive), '1.1')
            self.assertTrue(mock_compat.called) 

# 需要導入模塊: from oslo_versionedobjects import fields [as 別名]
# 或者: from oslo_versionedobjects.fields import ListOfObjectsField [as 別名]
def test_list_changes(self):
        @base.VersionedObjectRegistry.register
        class Foo(base.ObjectListBase, base.VersionedObject):
            fields = {'objects': fields.ListOfObjectsField('Bar')}

        @base.VersionedObjectRegistry.register
        class Bar(base.VersionedObject):
            fields = {'foo': fields.StringField()}

        obj = Foo(objects=[])
        self.assertEqual(set(['objects']), obj.obj_what_changed())
        obj.objects.append(Bar(foo='test'))
        self.assertEqual(set(['objects']), obj.obj_what_changed())
        obj.obj_reset_changes()
        # This should still look dirty because the child is dirty
        self.assertEqual(set(['objects']), obj.obj_what_changed())
        obj.objects[0].obj_reset_changes()
        # This should now look clean because the child is clean
        self.assertEqual(set(), obj.obj_what_changed()) 

# 需要導入模塊: from oslo_versionedobjects import fields [as 別名]
# 或者: from oslo_versionedobjects.fields import ListOfObjectsField [as 別名]
def test_complex(self):
        @base.VersionedObjectRegistry.register
        class TestChild(base.VersionedObject):
            VERSION = '2.34'

        @base.VersionedObjectRegistry.register
        class TestChildTwo(base.VersionedObject):
            VERSION = '4.56'
            fields = {
                'sibling': fields.ObjectField('TestChild'),
            }

        @base.VersionedObjectRegistry.register
        class TestObject(base.VersionedObject):
            VERSION = '1.23'
            fields = {
                'child': fields.ObjectField('TestChild'),
                'childtwo': fields.ListOfObjectsField('TestChildTwo'),
            }

        tree = base.obj_tree_get_versions('TestObject')
        self.assertEqual({'TestObject': '1.23',
                          'TestChild': '2.34',
                          'TestChildTwo': '4.56'},
                         tree) 

# 需要導入模塊: from oslo_versionedobjects import fields [as 別名]
# 或者: from oslo_versionedobjects.fields import ListOfObjectsField [as 別名]
def test_list_object_concat(self):
        @base.VersionedObjectRegistry.register_if(False)
        class MyList(base.ObjectListBase, base.VersionedObject):
            fields = {'objects': fields.ListOfObjectsField('MyOwnedObject')}

        values = [1, 2, 42]

        list1 = MyList(objects=[MyOwnedObject(baz=values[0]),
                                MyOwnedObject(baz=values[1])])
        list2 = MyList(objects=[MyOwnedObject(baz=values[2])])

        concat_list = list1 + list2
        for idx, obj in enumerate(concat_list):
            self.assertEqual(values[idx], obj.baz)

        # Assert that the original lists are unmodified
        self.assertEqual(2, len(list1.objects))
        self.assertEqual(1, list1.objects[0].baz)
        self.assertEqual(2, list1.objects[1].baz)
        self.assertEqual(1, len(list2.objects))
        self.assertEqual(42, list2.objects[0].baz) 

# 需要導入模塊: from oslo_versionedobjects import fields [as 別名]
# 或者: from oslo_versionedobjects.fields import ListOfObjectsField [as 別名]
def test_list_object_concat_fails_different_objects(self):
        @base.VersionedObjectRegistry.register_if(False)
        class MyList(base.ObjectListBase, base.VersionedObject):
            fields = {'objects': fields.ListOfObjectsField('MyOwnedObject')}

        @base.VersionedObjectRegistry.register_if(False)
        class MyList2(base.ObjectListBase, base.VersionedObject):
            fields = {'objects': fields.ListOfObjectsField('MyOwnedObject')}

        list1 = MyList(objects=[MyOwnedObject(baz=1)])
        list2 = MyList2(objects=[MyOwnedObject(baz=2)])

        def add(x, y):
            return x + y

        self.assertRaises(TypeError, add, list1, list2)
        # Assert that the original lists are unmodified
        self.assertEqual(1, len(list1.objects))
        self.assertEqual(1, len(list2.objects))
        self.assertEqual(1, list1.objects[0].baz)
        self.assertEqual(2, list2.objects[0].baz) 

# 需要導入模塊: from oslo_versionedobjects import fields [as 別名]
# 或者: from oslo_versionedobjects.fields import ListOfObjectsField [as 別名]
def obj_make_compatible(self, primitive, target_version):
        """Make an object representation compatible with a target version.

        This is responsible for taking the primitive representation of
        an object and making it suitable for the given target_version.
        This may mean converting the format of object attributes, removing
        attributes that have been added since the target version, etc. In
        general:

        - If a new version of an object adds a field, this routine
          should remove it for older versions.
        - If a new version changed or restricted the format of a field, this
          should convert it back to something a client knowing only of the
          older version will tolerate.
        - If an object that this object depends on is bumped, then this
          object should also take a version bump. Then, this routine should
          backlevel the dependent object (by calling its obj_make_compatible())
          if the requested version of this object is older than the version
          where the new dependent object was added.

        :param primitive: The result of :meth:`obj_to_primitive`
        :param target_version: The version string requested by the recipient
                               of the object
        :raises: :exc:`oslo_versionedobjects.exception.UnsupportedObjectError`
                 if conversion is not possible for some reason
        """
        for key, field in self.fields.items():
            if not isinstance(field, (obj_fields.ObjectField,
                                      obj_fields.ListOfObjectsField)):
                continue
            if not self.obj_attr_is_set(key):
                continue
            self._obj_make_obj_compatible(primitive, target_version, key) 

# 需要導入模塊: from oslo_versionedobjects import fields [as 別名]
# 或者: from oslo_versionedobjects.fields import ListOfObjectsField [as 別名]
def obj_tree_get_versions(objname, tree=None):
    """Construct a mapping of dependent object versions.

    This method builds a list of dependent object versions given a top-
    level object with other objects as fields. It walks the tree recursively
    to determine all the objects (by symbolic name) that could be contained
    within the top-level object, and the maximum versions of each. The result
    is a dict like::

      {'MyObject': '1.23', ... }

    :param objname: The top-level object at which to start
    :param tree: Used internally, pass None here.
    :returns: A dictionary of object names and versions
    """
    if tree is None:
        tree = {}
    if objname in tree:
        return tree
    objclass = VersionedObjectRegistry.obj_classes()[objname][0]
    tree[objname] = objclass.VERSION
    for field_name in objclass.fields:
        field = objclass.fields[field_name]
        if isinstance(field, obj_fields.ObjectField):
            child_cls = field._type._obj_name
        elif isinstance(field, obj_fields.ListOfObjectsField):
            child_cls = field._type._element_type._type._obj_name
        else:
            continue

        try:
            obj_tree_get_versions(child_cls, tree=tree)
        except IndexError:
            raise exception.UnregisteredSubobject(
                child_objname=child_cls, parent_objname=objname)
    return tree 

# 需要導入模塊: from oslo_versionedobjects import fields [as 別名]
# 或者: from oslo_versionedobjects.fields import ListOfObjectsField [as 別名]
def test_obj_make_compatible_on_list_base(self):
        @base.VersionedObjectRegistry.register_if(False)
        class MyList(base.ObjectListBase, base.VersionedObject):
            VERSION = '1.1'
            fields = {'objects': fields.ListOfObjectsField('MyObj')}

        childobj = MyObj(foo=1)
        listobj = MyList(objects=[childobj])
        compat_func = 'obj_make_compatible_from_manifest'
        with mock.patch.object(childobj, compat_func) as mock_compat:
            listobj.obj_to_primitive(target_version='1.0')
            mock_compat.assert_called_once_with({'foo': 1}, '1.0',
                                                version_manifest=None) 

# 需要導入模塊: from oslo_versionedobjects import fields [as 別名]
# 或者: from oslo_versionedobjects.fields import ListOfObjectsField [as 別名]
def test_obj_repr(self):
        @base.VersionedObjectRegistry.register
        class Foo(base.ObjectListBase, base.VersionedObject):
            fields = {'objects': fields.ListOfObjectsField('Bar')}

        @base.VersionedObjectRegistry.register
        class Bar(base.VersionedObject):
            fields = {'uuid': fields.StringField()}

        obj = Foo(objects=[Bar(uuid='fake-uuid')])
        self.assertEqual('Foo(objects=[Bar(fake-uuid)])', repr(obj)) 

# 需要導入模塊: from oslo_versionedobjects import fields [as 別名]
# 或者: from oslo_versionedobjects.fields import ListOfObjectsField [as 別名]
def test_complex_loopy(self):
        @base.VersionedObjectRegistry.register
        class TestChild(base.VersionedObject):
            VERSION = '2.34'
            fields = {
                'sibling': fields.ObjectField('TestChildTwo'),
            }

        @base.VersionedObjectRegistry.register
        class TestChildTwo(base.VersionedObject):
            VERSION = '4.56'
            fields = {
                'sibling': fields.ObjectField('TestChild'),
                'parents': fields.ListOfObjectsField('TestObject'),
            }

        @base.VersionedObjectRegistry.register
        class TestObject(base.VersionedObject):
            VERSION = '1.23'
            fields = {
                'child': fields.ObjectField('TestChild'),
                'childtwo': fields.ListOfObjectsField('TestChildTwo'),
            }

        tree = base.obj_tree_get_versions('TestObject')
        self.assertEqual({'TestObject': '1.23',
                          'TestChild': '2.34',
                          'TestChildTwo': '4.56'},
                         tree) 

# 需要導入模塊: from oslo_versionedobjects import fields [as 別名]
# 或者: from oslo_versionedobjects.fields import ListOfObjectsField [as 別名]
def test_builtin_list_add_fails(self):
        @base.VersionedObjectRegistry.register_if(False)
        class MyList(base.ObjectListBase, base.VersionedObject):
            fields = {'objects': fields.ListOfObjectsField('MyOwnedObject')}

        list1 = MyList(objects=[MyOwnedObject(baz=1)])

        def add(obj):
            return obj + []

        self.assertRaises(TypeError, add, list1)