4f4c2772da
The previous attempt did not update the version in pre commit config so the old version is still used by pep8 target. Change-Id: Idf8c7d99f7c6aeb0244d58e85524ba1f039195d8
285 lines
11 KiB
Python
285 lines
11 KiB
Python
# Copyright (c) 2014 OpenStack Foundation.
|
|
#
|
|
# 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 ast
|
|
from hacking import core
|
|
|
|
|
|
oslo_namespace_imports_dot = re.compile(r"import[\s]+oslo[.][^\s]+")
|
|
oslo_namespace_imports_from_dot = re.compile(r"from[\s]+oslo[.]")
|
|
oslo_namespace_imports_from_root = re.compile(r"from[\s]+oslo[\s]+import[\s]+")
|
|
mock_imports_directly = re.compile(r"import[\s]+mock")
|
|
mock_imports_direclty_from = re.compile(r"from[\s]+mock[\s]+import[\s]+")
|
|
|
|
|
|
@core.flake8ext
|
|
def check_oslo_namespace_imports(logical_line):
|
|
if re.match(oslo_namespace_imports_from_dot, logical_line):
|
|
msg = ("O321: '%s' must be used instead of '%s'.") % (
|
|
logical_line.replace('oslo.', 'oslo_'),
|
|
logical_line)
|
|
yield (0, msg)
|
|
elif re.match(oslo_namespace_imports_from_root, logical_line):
|
|
msg = ("O321: '%s' must be used instead of '%s'.") % (
|
|
logical_line.replace('from oslo import ', 'import oslo_'),
|
|
logical_line)
|
|
yield (0, msg)
|
|
elif re.match(oslo_namespace_imports_dot, logical_line):
|
|
msg = ("O321: '%s' must be used instead of '%s'.") % (
|
|
logical_line.replace('import', 'from').replace('.', ' import '),
|
|
logical_line)
|
|
yield (0, msg)
|
|
|
|
|
|
class BaseASTChecker(ast.NodeVisitor):
|
|
"""Provides a simple framework for writing AST-based checks.
|
|
|
|
Subclasses should implement visit_* methods like any other AST visitor
|
|
implementation. When they detect an error for a particular node the
|
|
method should call ``self.add_error(offending_node)``. Details about
|
|
where in the code the error occurred will be pulled from the node
|
|
object.
|
|
|
|
Subclasses should also provide a class variable named CHECK_DESC to
|
|
be used for the human readable error message.
|
|
|
|
"""
|
|
|
|
def __init__(self, tree, filename):
|
|
"""This object is created automatically by pep8.
|
|
|
|
:param tree: an AST tree
|
|
:param filename: name of the file being analyzed
|
|
(ignored by our checks)
|
|
"""
|
|
self._tree = tree
|
|
self._errors = []
|
|
|
|
def run(self):
|
|
"""Called automatically by pep8."""
|
|
self.visit(self._tree)
|
|
return self._errors
|
|
|
|
def add_error(self, node, message=None):
|
|
"""Add an error caused by a node to the list of errors for pep8."""
|
|
message = message or self.CHECK_DESC
|
|
error = (node.lineno, node.col_offset, message, self.__class__)
|
|
self._errors.append(error)
|
|
|
|
|
|
class CheckForLoggingIssues(BaseASTChecker):
|
|
|
|
DEBUG_CHECK_DESC = 'O324 Using translated string in debug logging'
|
|
NONDEBUG_CHECK_DESC = 'O325 Not using translating helper for logging'
|
|
EXCESS_HELPER_CHECK_DESC = 'O326 Using hints when _ is necessary'
|
|
LOG_MODULES = ('logging')
|
|
|
|
name = 'check_for_logging_issues'
|
|
version = '1.0'
|
|
|
|
def __init__(self, tree, filename):
|
|
super(CheckForLoggingIssues, self).__init__(tree, filename)
|
|
|
|
self.logger_names = []
|
|
self.logger_module_names = []
|
|
|
|
# NOTE(dstanek): this kinda accounts for scopes when talking
|
|
# about only leaf node in the graph
|
|
self.assignments = {}
|
|
|
|
def generic_visit(self, node):
|
|
"""Called if no explicit visitor function exists for a node."""
|
|
for field, value in ast.iter_fields(node):
|
|
if isinstance(value, list):
|
|
for item in value:
|
|
if isinstance(item, ast.AST):
|
|
item._parent = node
|
|
self.visit(item)
|
|
elif isinstance(value, ast.AST):
|
|
value._parent = node
|
|
self.visit(value)
|
|
|
|
def _filter_imports(self, module_name, alias):
|
|
"""Keeps lists of logging."""
|
|
if module_name in self.LOG_MODULES:
|
|
self.logger_module_names.append(alias.asname or alias.name)
|
|
|
|
def visit_Import(self, node):
|
|
for alias in node.names:
|
|
self._filter_imports(alias.name, alias)
|
|
return super(CheckForLoggingIssues, self).generic_visit(node)
|
|
|
|
def visit_ImportFrom(self, node):
|
|
for alias in node.names:
|
|
full_name = '%s.%s' % (node.module, alias.name)
|
|
self._filter_imports(full_name, alias)
|
|
return super(CheckForLoggingIssues, self).generic_visit(node)
|
|
|
|
def _find_name(self, node):
|
|
"""Return the fully qualified name or a Name or Attribute."""
|
|
if isinstance(node, ast.Name):
|
|
return node.id
|
|
elif (isinstance(node, ast.Attribute) and
|
|
isinstance(node.value, (ast.Name, ast.Attribute))):
|
|
method_name = node.attr
|
|
obj_name = self._find_name(node.value)
|
|
if obj_name is None:
|
|
return None
|
|
return obj_name + '.' + method_name
|
|
elif isinstance(node, str):
|
|
return node
|
|
else: # could be Subscript, Call or many more
|
|
return None
|
|
|
|
def visit_Assign(self, node):
|
|
"""Look for 'LOG = logging.getLogger'
|
|
|
|
This handles the simple case:
|
|
name = [logging_module].getLogger(...)
|
|
"""
|
|
attr_node_types = (ast.Name, ast.Attribute)
|
|
|
|
if (len(node.targets) != 1 or
|
|
not isinstance(node.targets[0], attr_node_types)):
|
|
# say no to: "x, y = ..."
|
|
return super(CheckForLoggingIssues, self).generic_visit(node)
|
|
|
|
target_name = self._find_name(node.targets[0])
|
|
|
|
if (isinstance(node.value, ast.BinOp) and
|
|
isinstance(node.value.op, ast.Mod)):
|
|
if (isinstance(node.value.left, ast.Call) and
|
|
isinstance(node.value.left.func, ast.Name)):
|
|
# NOTE(dstanek): this is done to match cases like:
|
|
# `msg = _('something %s') % x`
|
|
node = ast.Assign(value=node.value.left)
|
|
|
|
if not isinstance(node.value, ast.Call):
|
|
# node.value must be a call to getLogger
|
|
self.assignments.pop(target_name, None)
|
|
return super(CheckForLoggingIssues, self).generic_visit(node)
|
|
|
|
if isinstance(node.value.func, ast.Name):
|
|
self.assignments[target_name] = node.value.func.id
|
|
return super(CheckForLoggingIssues, self).generic_visit(node)
|
|
|
|
if (not isinstance(node.value.func, ast.Attribute) or
|
|
not isinstance(node.value.func.value, attr_node_types)):
|
|
# function must be an attribute on an object like
|
|
# logging.getLogger
|
|
return super(CheckForLoggingIssues, self).generic_visit(node)
|
|
|
|
object_name = self._find_name(node.value.func.value)
|
|
func_name = node.value.func.attr
|
|
|
|
if (object_name in self.logger_module_names and
|
|
func_name == 'getLogger'):
|
|
self.logger_names.append(target_name)
|
|
|
|
return super(CheckForLoggingIssues, self).generic_visit(node)
|
|
|
|
def visit_Call(self, node):
|
|
"""Look for the 'LOG.*' calls."""
|
|
# obj.method
|
|
if isinstance(node.func, ast.Attribute):
|
|
obj_name = self._find_name(node.func.value)
|
|
if isinstance(node.func.value, ast.Name):
|
|
method_name = node.func.attr
|
|
elif isinstance(node.func.value, ast.Attribute):
|
|
obj_name = self._find_name(node.func.value)
|
|
method_name = node.func.attr
|
|
else: # could be Subscript, Call or many more
|
|
return super(CheckForLoggingIssues, self).generic_visit(node)
|
|
|
|
# if dealing with a logger the method can't be "warn"
|
|
if obj_name in self.logger_names and method_name == 'warn':
|
|
msg = node.args[0] # first arg to a logging method is the msg
|
|
self.add_error(msg, message=self.USING_DEPRECATED_WARN)
|
|
|
|
# must be a logger instance and one of the support logging methods
|
|
if obj_name not in self.logger_names:
|
|
return super(CheckForLoggingIssues, self).generic_visit(node)
|
|
|
|
# the call must have arguments
|
|
if not node.args:
|
|
return super(CheckForLoggingIssues, self).generic_visit(node)
|
|
|
|
if method_name == 'debug':
|
|
self._process_debug(node)
|
|
|
|
return super(CheckForLoggingIssues, self).generic_visit(node)
|
|
|
|
def _process_debug(self, node):
|
|
msg = node.args[0] # first arg to a logging method is the msg
|
|
|
|
if (isinstance(msg, ast.Call) and
|
|
isinstance(msg.func, ast.Name)):
|
|
self.add_error(msg, message=self.DEBUG_CHECK_DESC)
|
|
|
|
elif (isinstance(msg, ast.Name) and
|
|
msg.id in self.assignments and
|
|
not self._is_raised_later(node, msg.id)):
|
|
self.add_error(msg, message=self.DEBUG_CHECK_DESC)
|
|
|
|
def _process_non_debug(self, node, method_name):
|
|
msg = node.args[0] # first arg to a logging method is the msg
|
|
|
|
if isinstance(msg, ast.Call):
|
|
self.add_error(msg, message=self.NONDEBUG_CHECK_DESC)
|
|
|
|
elif isinstance(msg, ast.Name):
|
|
|
|
# FIXME(dstanek): to make sure more robust we should be checking
|
|
# all names passed into a logging method. we can't right now
|
|
# because:
|
|
# 1. We have code like this that we'll fix when dealing with the %:
|
|
# msg = _('....') % {}
|
|
# LOG.warning(msg)
|
|
# 2. We also do LOG.exception(e) in several places. I'm not sure
|
|
# exactly what we should be doing about that.
|
|
if msg.id not in self.assignments:
|
|
return
|
|
|
|
if self._is_raised_later(node, msg.id):
|
|
self.add_error(msg, message=self.NONDEBUG_CHECK_DESC)
|
|
elif self._is_raised_later(node, msg.id):
|
|
self.add_error(msg, message=self.EXCESS_HELPER_CHECK_DESC)
|
|
|
|
def _is_raised_later(self, node, name):
|
|
|
|
def find_peers(node):
|
|
node_for_line = node._parent
|
|
for _field, value in ast.iter_fields(node._parent._parent):
|
|
if isinstance(value, list) and node_for_line in value:
|
|
return value[value.index(node_for_line) + 1:]
|
|
continue
|
|
return []
|
|
|
|
peers = find_peers(node)
|
|
for peer in peers:
|
|
if isinstance(peer, ast.Raise):
|
|
exc = peer.exc
|
|
if (isinstance(exc, ast.Call) and
|
|
len(exc.args) > 0 and
|
|
isinstance(exc.args[0], ast.Name) and
|
|
name in (a.id for a in exc.args)):
|
|
return True
|
|
else:
|
|
return False
|
|
elif isinstance(peer, ast.Assign):
|
|
if name in (t.id for t in peer.targets if hasattr(t, 'id')):
|
|
return False
|