46233d2c2a
According to [1], A class that overrides __eq__() and does not define __hash__() will have its __hash__() implicitly set to None. When the __hash__() method of a class is None, instances of the class will raise an appropriate TypeError when a program attempts to retrieve their hash value, and will also be correctly identified as unhashable when checking isinstance(obj, collections.Hashable). A few other classes also implement __eq__ but we don't seem to use them anywhere as keys in dictionaries, so they don't need to implement the __hash__ function yet. [1] https://docs.python.org/3.4/reference/datamodel.html?highlight=hash#object.__hash__ partial blueprint heat-python34-support Change-Id: Idf24d462f386927496950e65a24e41b9aef69281
137 lines
3.9 KiB
Python
137 lines
3.9 KiB
Python
#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import random
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import string
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import uuid
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from oslo_config import cfg
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from oslo_db import options
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import sqlalchemy
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from heat.common import context
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from heat.db import api as db_api
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from heat.db.sqlalchemy import models
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from heat.engine import environment
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from heat.engine import resource
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from heat.engine import stack
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from heat.engine import template
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get_engine = db_api.get_engine
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class UUIDStub(object):
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def __init__(self, value):
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self.value = value
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def __enter__(self):
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self.uuid4 = uuid.uuid4
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uuid_stub = lambda: self.value
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uuid.uuid4 = uuid_stub
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def __exit__(self, *exc_info):
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uuid.uuid4 = self.uuid4
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def random_name():
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return ''.join(random.choice(string.ascii_uppercase)
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for x in range(10))
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def setup_dummy_db():
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options.cfg.set_defaults(options.database_opts, sqlite_synchronous=False)
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options.set_defaults(cfg.CONF, connection="sqlite://", sqlite_db='heat.db')
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engine = get_engine()
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models.BASE.metadata.create_all(engine)
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engine.connect()
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def reset_dummy_db():
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engine = get_engine()
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meta = sqlalchemy.MetaData()
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meta.reflect(bind=engine)
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for table in reversed(meta.sorted_tables):
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if table.name == 'migrate_version':
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continue
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engine.execute(table.delete())
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def dummy_context(user='test_username', tenant_id='test_tenant_id',
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password='password', roles=None, user_id=None,
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trust_id=None, region_name=None):
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roles = roles or []
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return context.RequestContext.from_dict({
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'tenant_id': tenant_id,
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'tenant': 'test_tenant',
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'username': user,
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'user_id': user_id,
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'password': password,
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'roles': roles,
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'is_admin': False,
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'auth_url': 'http://server.test:5000/v2.0',
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'auth_token': 'abcd1234',
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'trust_id': trust_id,
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'region_name': region_name
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})
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def parse_stack(t, params=None, files=None, stack_name=None,
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stack_id=None, timeout_mins=None):
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params = params or {}
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files = files or {}
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ctx = dummy_context()
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templ = template.Template(t, files=files,
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env=environment.Environment(params))
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templ.store()
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if stack_name is None:
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stack_name = random_name()
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stk = stack.Stack(ctx, stack_name, templ, stack_id=stack_id,
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timeout_mins=timeout_mins)
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stk.store()
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return stk
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class PhysName(object):
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mock_short_id = 'x' * 12
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def __init__(self, stack_name, resource_name, limit=255):
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name = '%s-%s-%s' % (stack_name,
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resource_name,
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self.mock_short_id)
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self._physname = resource.Resource.reduce_physical_resource_name(
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name, limit)
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self.stack, self.res, self.sid = self._physname.rsplit('-', 2)
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def __eq__(self, physical_name):
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try:
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stk, res, short_id = str(physical_name).rsplit('-', 2)
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except ValueError:
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return False
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if len(short_id) != len(self.mock_short_id):
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return False
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# ignore the stack portion of the name, as it may have been truncated
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return res == self.res
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def __hash__(self):
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return id(self)
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def __ne__(self, physical_name):
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return not self.__eq__(physical_name)
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def __repr__(self):
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return self._physname
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