b8fa64b8a2
TypeError Exception during attemt to set some resource's parameter from `null` to some value or value to `null`. Change-Id: Ib20218f6a8676669230f440a4a13dea61f2d4c6b Closes-bug: #1514364
417 lines
13 KiB
Python
417 lines
13 KiB
Python
# Copyright (c) 2014 Mirantis, Inc.
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#
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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 collections
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import contextlib
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import functools
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import re
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import string
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import sys
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import uuid
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import eventlet.greenpool
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import eventlet.greenthread
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import semantic_version
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import yaql.language.exceptions
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import yaql.language.expressions
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from yaql.language import utils as yaqlutils
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from murano.common import utils
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from murano.dsl import constants
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from murano.dsl import dsl_types
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from murano.dsl import exceptions
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KEYWORD_REGEX = re.compile(r'^(?!__)\b[^\W\d]\w*\b$')
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_threads_sequencer = 0
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def evaluate(value, context):
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if isinstance(value, (dsl_types.YaqlExpression,
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yaql.language.expressions.Statement)):
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return value(context)
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elif isinstance(value, yaqlutils.MappingType):
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return yaqlutils.FrozenDict(
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(evaluate(d_key, context),
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evaluate(d_value, context))
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for d_key, d_value in value.iteritems())
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elif yaqlutils.is_sequence(value):
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return tuple(evaluate(t, context) for t in value)
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elif isinstance(value, yaqlutils.SetType):
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return frozenset(evaluate(t, context) for t in value)
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elif yaqlutils.is_iterable(value):
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return tuple(
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evaluate(t, context)
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for t in yaqlutils.limit_iterable(
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value, constants.ITERATORS_LIMIT))
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elif isinstance(value, dsl_types.MuranoObjectInterface):
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return value.object
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else:
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return value
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def merge_lists(list1, list2):
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result = []
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for item in list1 + list2:
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exists = False
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for old_item in result:
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if not utils.is_different(item, old_item):
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exists = True
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break
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if not exists:
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result.append(item)
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return result
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def merge_dicts(dict1, dict2, max_levels=0):
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result = {}
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for key, value1 in dict1.items():
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result[key] = value1
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if key in dict2:
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value2 = dict2[key]
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if type(value2) != type(value1):
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if ((isinstance(value1, basestring) or value1 is None) and
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(isinstance(value2, basestring) or value2 is None)):
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continue
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raise TypeError()
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if max_levels != 1 and isinstance(value2, dict):
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result[key] = merge_dicts(
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value1, value2,
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0 if max_levels == 0 else max_levels - 1)
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elif max_levels != 1 and isinstance(value2, list):
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result[key] = merge_lists(value1, value2)
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else:
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result[key] = value2
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for key, value1 in dict2.items():
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if key not in result:
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result[key] = value1
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return result
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def generate_id():
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return uuid.uuid4().hex
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def parallel_select(collection, func, limit=1000):
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# workaround for eventlet issue 232
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# https://github.com/eventlet/eventlet/issues/232
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def wrapper(element):
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try:
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with contextual(get_context()):
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return func(element), False, None
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except Exception as e:
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return e, True, sys.exc_info()[2]
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gpool = eventlet.greenpool.GreenPool(limit)
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result = list(gpool.imap(wrapper, collection))
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try:
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exception = next(t for t in result if t[1])
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except StopIteration:
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return map(lambda t: t[0], result)
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else:
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raise exception[0], None, exception[2]
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def enum(**enums):
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return type('Enum', (), enums)
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def get_context():
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current_thread = eventlet.greenthread.getcurrent()
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return getattr(current_thread, '__murano_context', None)
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def get_executor(context=None):
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context = context or get_context()
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result = context[constants.CTX_EXECUTOR]
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return None if not result else result()
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def get_type(context=None):
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context = context or get_context()
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return context[constants.CTX_TYPE]
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def get_environment(context=None):
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context = context or get_context()
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return context[constants.CTX_ENVIRONMENT]
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def get_object_store(context=None):
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context = context or get_context()
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return context[constants.CTX_THIS].object_store
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def get_package_loader(context=None):
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context = context or get_context()
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result = context[constants.CTX_PACKAGE_LOADER]
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return None if not result else result()
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def get_this(context=None):
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context = context or get_context()
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return context[constants.CTX_THIS]
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def get_caller_context(context=None):
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context = context or get_context()
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return context[constants.CTX_CALLER_CONTEXT]
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def get_attribute_store(context=None):
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context = context or get_context()
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store = context[constants.CTX_ATTRIBUTE_STORE]
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return None if not store else store()
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def get_current_instruction(context=None):
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context = context or get_context()
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return context[constants.CTX_CURRENT_INSTRUCTION]
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def get_current_method(context=None):
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context = context or get_context()
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return context[constants.CTX_CURRENT_METHOD]
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def get_yaql_engine(context=None):
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context = context or get_context()
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return context[constants.CTX_YAQL_ENGINE]
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def get_current_exception(context=None):
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context = context or get_context()
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return context[constants.CTX_CURRENT_EXCEPTION]
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def are_property_modifications_allowed(context=None):
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context = context or get_context()
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return context[constants.CTX_ALLOW_PROPERTY_WRITES] or False
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def get_class(name, context=None):
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context = context or get_context()
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murano_class = get_type(context)
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return murano_class.package.find_class(name)
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def is_keyword(text):
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return KEYWORD_REGEX.match(text) is not None
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def get_current_thread_id():
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global _threads_sequencer
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current_thread = eventlet.greenthread.getcurrent()
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thread_id = getattr(current_thread, '__thread_id', None)
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if thread_id is None:
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thread_id = 'T' + str(_threads_sequencer)
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_threads_sequencer += 1
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setattr(current_thread, '__thread_id', thread_id)
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return thread_id
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@contextlib.contextmanager
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def contextual(ctx):
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current_thread = eventlet.greenthread.getcurrent()
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current_context = getattr(current_thread, '__murano_context', None)
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if ctx:
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setattr(current_thread, '__murano_context', ctx)
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try:
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yield
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finally:
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if current_context:
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setattr(current_thread, '__murano_context', current_context)
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elif hasattr(current_thread, '__murano_context'):
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delattr(current_thread, '__murano_context')
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def parse_version_spec(version_spec):
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if isinstance(version_spec, semantic_version.Spec):
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return normalize_version_spec(version_spec)
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if isinstance(version_spec, semantic_version.Version):
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return normalize_version_spec(
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semantic_version.Spec('==' + str(version_spec)))
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if not version_spec:
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version_spec = '0'
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version_spec = str(version_spec).translate(None, string.whitespace)
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if version_spec[0].isdigit():
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version_spec = '==' + str(version_spec)
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version_spec = semantic_version.Spec(version_spec)
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return normalize_version_spec(version_spec)
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def parse_version(version):
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if isinstance(version, semantic_version.Version):
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return version
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if not version:
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version = '0'
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return semantic_version.Version.coerce(str(version))
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def traverse(seed, producer=None, track_visited=True):
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if not yaqlutils.is_iterable(seed):
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seed = [seed]
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visited = None if not track_visited else set()
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queue = collections.deque(seed)
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while queue:
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item = queue.popleft()
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if track_visited:
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if item in visited:
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continue
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visited.add(item)
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produced = (yield item)
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if produced is None and producer:
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produced = producer(item)
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if produced:
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queue.extend(produced)
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def cast(obj, murano_class, pov_or_version_spec=None):
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if isinstance(obj, dsl_types.MuranoObjectInterface):
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obj = obj.object
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if isinstance(pov_or_version_spec, dsl_types.MuranoClass):
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pov_or_version_spec = pov_or_version_spec.package
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elif isinstance(pov_or_version_spec, basestring):
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pov_or_version_spec = parse_version_spec(pov_or_version_spec)
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if isinstance(murano_class, dsl_types.MuranoClass):
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if pov_or_version_spec is None:
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pov_or_version_spec = parse_version_spec(murano_class.version)
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murano_class = murano_class.name
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candidates = []
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for cls in obj.type.ancestors():
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if cls.name != murano_class:
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continue
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elif isinstance(pov_or_version_spec, semantic_version.Version):
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if cls.version != pov_or_version_spec:
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continue
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elif isinstance(pov_or_version_spec, semantic_version.Spec):
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if cls.version not in pov_or_version_spec:
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continue
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elif isinstance(pov_or_version_spec, dsl_types.MuranoPackage):
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requirement = pov_or_version_spec.requirements.get(
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cls.package.name)
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if requirement is None:
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raise exceptions.NoClassFound(murano_class)
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if cls.version not in requirement:
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continue
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elif pov_or_version_spec is not None:
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raise ValueError('pov_or_version_spec of unsupported '
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'type {0}'.format(type(pov_or_version_spec)))
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candidates.append(cls)
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if not candidates:
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raise exceptions.NoClassFound(murano_class)
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elif len(candidates) > 1:
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raise exceptions.AmbiguousClassName(murano_class)
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return obj.cast(candidates[0])
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def is_instance_of(obj, class_name, pov_or_version_spec=None):
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try:
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cast(obj, class_name, pov_or_version_spec)
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return True
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except (exceptions.NoClassFound, exceptions.AmbiguousClassName):
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return False
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def filter_parameters_dict(parameters):
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parameters = parameters.copy()
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for name in parameters.keys():
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if not is_keyword(name):
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del parameters[name]
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return parameters
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def memoize(func):
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cache = {}
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@functools.wraps(func)
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def wrap(*args):
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if args not in cache:
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result = func(*args)
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cache[args] = result
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return result
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else:
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return cache[args]
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return wrap
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def normalize_version_spec(version_spec):
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def coerce(v):
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return semantic_version.Version('{0}.{1}.{2}'.format(
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v.major, v.minor or 0, v.patch or 0
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))
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def increment(v):
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# NOTE(ativelkov): replace these implementations with next_minor() and
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# next_major() calls when the semantic_version is updated in global
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# requirements.
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if v.minor is None:
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return semantic_version.Version(
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'.'.join(str(x) for x in [v.major + 1, 0, 0]))
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else:
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return semantic_version.Version(
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'.'.join(str(x) for x in [v.major, v.minor + 1, 0]))
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def extend(v):
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return semantic_version.Version(str(v) + '-0')
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transformations = {
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'>': [('>=', (increment, extend))],
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'>=': [('>=', (coerce,))],
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'<': [('<', (coerce, extend))],
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'<=': [('<', (increment, extend))],
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'!=': [('>=', (increment, extend))],
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'==': [('>=', (coerce,)), ('<', (increment, coerce, extend))]
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}
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new_parts = []
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for item in version_spec.specs:
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if item.kind == '*':
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continue
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elif item.spec.patch is not None:
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new_parts.append(str(item))
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else:
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for op, funcs in transformations[item.kind]:
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new_parts.append('{0}{1}'.format(
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op,
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reduce(lambda v, f: f(v), funcs, item.spec)
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))
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if not new_parts:
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return semantic_version.Spec('*')
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return semantic_version.Spec(*new_parts)
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semver_to_api_map = {
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'>': 'gt',
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'>=': 'ge',
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'<': 'lt',
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'<=': 'le',
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'!=': 'ne',
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'==': 'eq'
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}
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def breakdown_spec_to_query(normalized_spec):
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res = []
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for item in normalized_spec.specs:
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if item.kind == '*':
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continue
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else:
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res.append("%s:%s" % (semver_to_api_map[item.kind],
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item.spec))
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return res
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