deb-murano/murano/dsl/yaql_expression.py
Stan Lagun 9e8cec8910 Support for Unicode strings in MuranoPL was fixed
There were several issues with Unicode support in MuranoPL
after switch to yaql 1.0. Each of those issues caused any deploy
to fail if it used to do anything with non-ASCII strings

Fixed issues are:
* Unicode strings should not be encoded to str types anymore.
yaql 1.0 has native support for the Unicode and fails when non-
ASCII chars encounter in str expressions. Also tests for Unicode
support are now part of the yaql

* Traces of execution were logged not as Unicode strings.  Because
those traces contain parameter values ant function return value
logging failed when any of above contained non-ASCII chars

* Stack trace logging failed when frame expression contained
non-ASCII chars

* Exception messages could not contain non-ASCII chars

Also Logging API was not Unicode ready

Change-Id: Ief0b45f15669c5f8ee74fd6ff41fa5bc39c9500b
Closes-Bug: #1494275
2015-09-15 02:21:54 +03:00

83 lines
2.7 KiB
Python

# Copyright (c) 2014 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 re
import types
from yaql.language import exceptions as yaql_exceptions
from yaql.language import expressions
from murano.dsl import constants
from murano.dsl import dsl_types
from murano.dsl import yaql_integration
class YaqlExpression(dsl_types.YaqlExpression):
def __init__(self, expression, version):
self._version = version
if isinstance(expression, types.StringTypes):
self._expression = unicode(expression)
self._parsed_expression = yaql_integration.parse(
self._expression, version)
self._file_position = None
elif isinstance(expression, YaqlExpression):
self._expression = expression._expression
self._parsed_expression = expression._parsed_expression
self._file_position = expression._file_position
elif isinstance(expression, expressions.Statement):
self._expression = unicode(expression)
self._parsed_expression = expression
self._file_position = None
else:
raise TypeError('expression is not of supported types')
@property
def expression(self):
return self._expression
@property
def version(self):
return self._version
@property
def source_file_position(self):
return self._file_position
@source_file_position.setter
def source_file_position(self, value):
self._file_position = value
def __repr__(self):
return 'YAQL(%s)' % self._expression
def __str__(self):
return self._expression
@staticmethod
def is_expression(expression, version):
if not isinstance(expression, types.StringTypes):
return False
if re.match('^[\s\w\d.:]*$', expression):
return False
try:
yaql_integration.parse(expression, version)
return True
except yaql_exceptions.YaqlParsingException:
return False
def __call__(self, context):
if context:
context[constants.CTX_CURRENT_INSTRUCTION] = self
return self._parsed_expression.evaluate(context=context)