deb-murano/murano/dsl/principal_objects/stack_trace.py
Georgy Okrokvertskhov 3988363559 Add caller information to Begin execute log entry
This patch adds a new caller information logged by executor when a new MuranoPL
function is started. This will help to reconstruct a calls flow for debugging. Also it can
be used to create a graphical execution trace.

Change-Id: If53634994b99b9bdf68dd1a020f61abbbf656d4e
2014-07-30 10:28:08 -07:00

97 lines
3.1 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 inspect
import os.path
from murano.dsl import helpers
from murano.dsl import murano_class
from murano.dsl import murano_object
from murano.dsl import yaql_expression
@murano_class.classname('io.murano.StackTrace')
class StackTrace(murano_object.MuranoObject):
def initialize(self, _context, includeNativeFrames=True):
frames = []
context = _context
while True:
if not context:
break
frames.append(compose_stack_frame(context))
context = helpers.get_caller_context(context)
frames.pop()
frames.reverse()
if includeNativeFrames:
native_frames = []
for frame in inspect.trace()[1:]:
location = yaql_expression.YaqlExpressionFilePosition(
os.path.abspath(frame[1]), frame[2],
-1, -1, -1, -1, -1)
method = frame[3]
native_frames.append({
'instruction': frame[4][0].strip(),
'location': location,
'method': method,
'class': None
})
frames.extend(native_frames)
self.set_property('frames', frames)
def toString(self, prefix=''):
return '\n'.join([format_frame(t, prefix)for t in self.get_property(
'frames')])
def compose_stack_frame(context):
instruction = helpers.get_current_instruction(context)
return {
'instruction': None if instruction is None
else str(instruction),
'location': None if instruction is None
else instruction.source_file_position,
'method': helpers.get_current_method(context),
'class': helpers.get_type(context)
}
def format_frame(frame, prefix=''):
instruction = frame['instruction']
method = frame['method']
murano_class = frame['class']
location = frame['location']
if murano_class:
method += ' of class ' + murano_class.name
if location:
args = (
os.path.abspath(location.file_path),
location.start_line,
':' + str(location.start_column)
if location.start_column >= 0 else '',
method,
instruction,
prefix
)
return '{5}File "{0}", line {1}{2} in method {3}\n' \
'{5} {4}'.format(*args)
else:
return '{2}File <unknown> in method {0}\n{2} {1}'.format(
method, instruction, prefix)