068831ccd8
With this change MuranoPackage becomes first-class DSL citizen. Packages have version, runtime_version (that is specified in Format attribute of the manifest file) and a list of classes. Previously engine used to have package loader which had most of "load" functionality and class loader that mostly acted as an adapter from package loader to interface that DSL used to get classes. Now class loader is gone and is replaced with package loader at the DSL level. Package loader is responsible for loading packages by either package or class name (as it was before) plus semantic_version spec (for example ">=1.2,<2.0"). Package loader can now keep track of several versions of the same package. Also packages now have requirements with version specs. All class names that are encountered in application code are looked up within requirements only. As a consequence packages that use other packages without referencing them explicitly will become broken. An exception from this rule is core library which is referenced automatically. Partially implements: blueprint murano-versioning Change-Id: I8789ba45b6210e71bf4977a766f82b66d2a2d270
330 lines
10 KiB
Python
330 lines
10 KiB
Python
# Copyright (c) 2015 Mirantis, Inc.
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License"); you may
|
|
# not use this file except in compliance with the License. You may obtain
|
|
# a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
# License for the specific language governing permissions and limitations
|
|
# under the License.
|
|
|
|
import inspect
|
|
import os.path
|
|
import types
|
|
|
|
from yaql.language import expressions as yaql_expressions
|
|
from yaql.language import utils
|
|
from yaql.language import yaqltypes
|
|
|
|
from murano.dsl import constants
|
|
from murano.dsl import dsl_types
|
|
from murano.dsl import helpers
|
|
|
|
|
|
NO_VALUE = utils.create_marker('NO_VALUE')
|
|
|
|
|
|
def name(dsl_name):
|
|
def wrapper(cls):
|
|
cls.__murano_name = dsl_name
|
|
return cls
|
|
return wrapper
|
|
|
|
|
|
class MuranoType(yaqltypes.PythonType):
|
|
def __init__(self, murano_class, nullable=False, version_spec=None):
|
|
self.murano_class = murano_class
|
|
self.version_spec = version_spec
|
|
super(MuranoType, self).__init__(
|
|
(dsl_types.MuranoObject, MuranoObjectInterface), nullable)
|
|
|
|
def check(self, value, context, *args, **kwargs):
|
|
if not super(MuranoType, self).check(
|
|
value, context, *args, **kwargs):
|
|
return False
|
|
if isinstance(value, MuranoObjectInterface):
|
|
value = value.object
|
|
if value is None or isinstance(value, yaql_expressions.Expression):
|
|
return True
|
|
murano_class = self.murano_class
|
|
if isinstance(murano_class, types.StringTypes):
|
|
murano_class_name = murano_class
|
|
else:
|
|
murano_class_name = murano_class.name
|
|
return helpers.is_instance_of(
|
|
value, murano_class_name,
|
|
self.version_spec or helpers.get_type(context))
|
|
|
|
def convert(self, value, sender, context, function_spec, engine,
|
|
*args, **kwargs):
|
|
result = super(MuranoType, self).convert(
|
|
value, sender, context, function_spec, engine, *args, **kwargs)
|
|
if isinstance(result, dsl_types.MuranoObject):
|
|
return MuranoObjectInterface(result, engine)
|
|
return result
|
|
|
|
|
|
class ThisParameterType(yaqltypes.HiddenParameterType, yaqltypes.SmartType):
|
|
def __init__(self):
|
|
super(ThisParameterType, self).__init__(False)
|
|
|
|
def convert(self, value, sender, context, function_spec, engine,
|
|
*args, **kwargs):
|
|
this = helpers.get_this(context)
|
|
executor = helpers.get_executor(context)
|
|
return MuranoObjectInterface(this, engine, executor)
|
|
|
|
|
|
class InterfacesParameterType(yaqltypes.HiddenParameterType,
|
|
yaqltypes.SmartType):
|
|
def __init__(self):
|
|
super(InterfacesParameterType, self).__init__(False)
|
|
|
|
def convert(self, value, sender, context, function_spec, engine,
|
|
*args, **kwargs):
|
|
this = helpers.get_this(context)
|
|
return Interfaces(engine, this)
|
|
|
|
|
|
class MuranoTypeName(yaqltypes.LazyParameterType, yaqltypes.PythonType):
|
|
def __init__(self, nullable=False, context=None):
|
|
self._context = context
|
|
super(MuranoTypeName, self).__init__(
|
|
(dsl_types.MuranoClassReference,) + types.StringTypes, nullable)
|
|
|
|
def convert(self, value, sender, context, function_spec, engine,
|
|
*args, **kwargs):
|
|
context = self._context or context
|
|
if isinstance(value, yaql_expressions.Expression):
|
|
value = value(utils.NO_VALUE, context, engine)
|
|
value = super(MuranoTypeName, self).convert(
|
|
value, sender, context, function_spec, engine)
|
|
if isinstance(value, types.StringTypes):
|
|
murano_type = helpers.get_type(context)
|
|
value = dsl_types.MuranoClassReference(
|
|
helpers.get_class(
|
|
murano_type.namespace_resolver.resolve_name(
|
|
value), context))
|
|
return value
|
|
|
|
|
|
class MuranoObjectInterface(dsl_types.MuranoObjectInterface):
|
|
class DataInterface(object):
|
|
def __init__(self, object_interface):
|
|
object.__setattr__(self, '__object_interface', object_interface)
|
|
|
|
def __getattr__(self, item):
|
|
oi = getattr(self, '__object_interface')
|
|
return oi[item]
|
|
|
|
def __setattr__(self, key, value):
|
|
oi = getattr(self, '__object_interface')
|
|
oi[key] = value
|
|
|
|
class CallInterface(object):
|
|
def __init__(self, mpl_object, executor):
|
|
self.__object = mpl_object
|
|
self.__executor = executor
|
|
|
|
def __getattr__(self, item):
|
|
executor = self.__executor or helpers.get_executor()
|
|
|
|
def func(*args, **kwargs):
|
|
self._insert_instruction()
|
|
return self.__object.type.invoke(
|
|
item, executor, self.__object, args, kwargs,
|
|
helpers.get_context())
|
|
return func
|
|
|
|
@staticmethod
|
|
def _insert_instruction():
|
|
context = helpers.get_context()
|
|
if context:
|
|
frame = inspect.stack()[2]
|
|
location = dsl_types.ExpressionFilePosition(
|
|
os.path.abspath(frame[1]), frame[2],
|
|
-1, frame[2], -1)
|
|
context[constants.CTX_CURRENT_INSTRUCTION] = NativeInstruction(
|
|
frame[4][0].strip(), location)
|
|
|
|
def __init__(self, mpl_object, engine, executor=None):
|
|
self.__object = mpl_object
|
|
self.__executor = executor
|
|
self.__engine = engine
|
|
|
|
@property
|
|
def object(self):
|
|
return self.__object
|
|
|
|
@property
|
|
def id(self):
|
|
return self.__object.object_id
|
|
|
|
@property
|
|
def owner(self):
|
|
return self.__object.owner
|
|
|
|
@property
|
|
def type(self):
|
|
return self.__object.type
|
|
|
|
@property
|
|
def package(self):
|
|
return self.type.package
|
|
|
|
def data(self):
|
|
return MuranoObjectInterface.DataInterface(self)
|
|
|
|
@property
|
|
def extension(self):
|
|
return self.__object.extension
|
|
|
|
def cast(self, murano_class, version_spec=None):
|
|
return MuranoObjectInterface(
|
|
helpers.cast(
|
|
self.__object, murano_class,
|
|
version_spec or helpers.get_type()),
|
|
self.__engine, self.__executor)
|
|
|
|
def is_instance_of(self, murano_class, version_spec=None):
|
|
return helpers.is_instance_of(
|
|
self.__object, murano_class,
|
|
version_spec or helpers.get_type())
|
|
|
|
def ancestors(self):
|
|
return self.type.ancestors()
|
|
|
|
def __getitem__(self, item):
|
|
context = helpers.get_context()
|
|
return to_mutable(
|
|
self.__object.get_property(item, context), self.__engine)
|
|
|
|
def __setitem__(self, key, value):
|
|
context = helpers.get_context()
|
|
value = helpers.evaluate(value, context)
|
|
self.__object.set_property(key, value, context)
|
|
|
|
def __call__(self):
|
|
return MuranoObjectInterface.CallInterface(
|
|
self.object, self.__executor)
|
|
|
|
def __repr__(self):
|
|
return '<{0}>'.format(repr(self.object))
|
|
|
|
|
|
class YaqlInterface(object):
|
|
def __init__(self, engine, sender=utils.NO_VALUE):
|
|
self.__engine = engine
|
|
self.__sender = sender
|
|
|
|
@property
|
|
def context(self):
|
|
return self.__context
|
|
|
|
@property
|
|
def engine(self):
|
|
return self.__engine
|
|
|
|
@property
|
|
def sender(self):
|
|
return self.__sender
|
|
|
|
def on(self, sender):
|
|
return YaqlInterface(self.engine, sender)
|
|
|
|
def __getattr__(self, item):
|
|
def stub(*args, **kwargs):
|
|
context = helpers.get_context()
|
|
args = tuple(helpers.evaluate(arg, context) for arg in args)
|
|
kwargs = dict((key, helpers.evaluate(value, context))
|
|
for key, value in kwargs.iteritems())
|
|
return to_mutable(
|
|
context(item, self.engine, self.sender)(*args, **kwargs),
|
|
self.engine)
|
|
return stub
|
|
|
|
def __call__(self, __expression, *args, **kwargs):
|
|
context = helpers.get_context().create_child_context()
|
|
for i, param in enumerate(args):
|
|
context['$' + str(i + 1)] = helpers.evaluate(param, context)
|
|
for arg_name, arg_value in kwargs.iteritems():
|
|
context['$' + arg_name] = helpers.evaluate(arg_value, context)
|
|
parsed = self.engine(__expression)
|
|
res = parsed.evaluate(context=context)
|
|
return to_mutable(res, self.engine)
|
|
|
|
def __getitem__(self, item):
|
|
return helpers.get_context()[item]
|
|
|
|
def __setitem__(self, key, value):
|
|
helpers.get_context()[key] = value
|
|
|
|
|
|
class Interfaces(object):
|
|
def __init__(self, engine, mpl_object):
|
|
self.__engine = engine
|
|
self.__object = mpl_object
|
|
|
|
def yaql(self, sender=utils.NO_VALUE):
|
|
return YaqlInterface(self.__engine, sender)
|
|
|
|
def this(self):
|
|
return self.methods(self.__object)
|
|
|
|
def methods(self, mpl_object):
|
|
if mpl_object is None:
|
|
return None
|
|
return MuranoObjectInterface(mpl_object, self.__engine)
|
|
|
|
@property
|
|
def environment(self):
|
|
return helpers.get_environment()
|
|
|
|
@property
|
|
def caller(self):
|
|
caller_context = helpers.get_caller_context()
|
|
if caller_context is None:
|
|
return None
|
|
caller = helpers.get_this(caller_context)
|
|
if caller is None:
|
|
return None
|
|
return MuranoObjectInterface(caller, self.__engine)
|
|
|
|
@property
|
|
def attributes(self):
|
|
executor = helpers.get_executor()
|
|
return executor.attribute_store
|
|
|
|
@property
|
|
def class_config(self):
|
|
return self.__object.type.package.get_class_config(
|
|
self.__object.type.name)
|
|
|
|
@property
|
|
def package_loader(self):
|
|
return helpers.get_package_loader()
|
|
|
|
|
|
class NativeInstruction(object):
|
|
def __init__(self, instruction, location):
|
|
self.instruction = instruction
|
|
self.source_file_position = location
|
|
|
|
def __str__(self):
|
|
return self.instruction
|
|
|
|
|
|
def to_mutable(obj, yaql_engine):
|
|
def converter(value, limit_func, engine, rec):
|
|
if isinstance(value, dsl_types.MuranoObject):
|
|
return MuranoObjectInterface(value, engine)
|
|
else:
|
|
return utils.convert_output_data(value, limit_func, engine, rec)
|
|
|
|
limiter = lambda it: utils.limit_iterable(it, constants.ITERATORS_LIMIT)
|
|
return converter(obj, limiter, yaql_engine, converter)
|