Add pylint-based lintstack test to tox environment
lintstack is a pylint-based static analysis tool to find bugs in Python code. To run the test via tox: $ tox -e pylint To run the test directly: $ tools/lintstack.sh Change-Id: If155f47ed84eb820ac505ee741bdd18edd41b1eb
This commit is contained in:
Yun Mao
parent
116493092c
commit
d75fafa88f
|
|
@ -23,4 +23,6 @@ keeper
|
|||
keys
|
||||
local_settings.py
|
||||
tools/conf/cinder.conf*
|
||||
tools/lintstack.head.py
|
||||
tools/pylint_exceptions
|
||||
tags
|
||||
|
|
|
|||
|
|
@ -0,0 +1,199 @@
|
|||
#!/usr/bin/env python
|
||||
# vim: tabstop=4 shiftwidth=4 softtabstop=4
|
||||
|
||||
# Copyright (c) 2013, AT&T Labs, Yun Mao <yunmao@gmail.com>
|
||||
# All Rights Reserved.
|
||||
#
|
||||
# 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.
|
||||
|
||||
"""pylint error checking."""
|
||||
|
||||
import cStringIO as StringIO
|
||||
import json
|
||||
import re
|
||||
import sys
|
||||
|
||||
from pylint import lint
|
||||
from pylint.reporters import text
|
||||
|
||||
# Note(maoy): E1103 is error code related to partial type inference
|
||||
ignore_codes = ["E1103"]
|
||||
# Note(maoy): the error message is the pattern of E0202. It should be ignored
|
||||
# for cinder.tests modules
|
||||
ignore_messages = ["An attribute affected in cinder.tests"]
|
||||
# Note(maoy): we ignore all errors in openstack.common because it should be
|
||||
# checked elsewhere. We also ignore cinder.tests for now due to high false
|
||||
# positive rate.
|
||||
ignore_modules = ["cinder/openstack/common/", "cinder/tests/"]
|
||||
|
||||
KNOWN_PYLINT_EXCEPTIONS_FILE = "tools/pylint_exceptions"
|
||||
|
||||
|
||||
class LintOutput(object):
|
||||
|
||||
_cached_filename = None
|
||||
_cached_content = None
|
||||
|
||||
def __init__(self, filename, lineno, line_content, code, message,
|
||||
lintoutput):
|
||||
self.filename = filename
|
||||
self.lineno = lineno
|
||||
self.line_content = line_content
|
||||
self.code = code
|
||||
self.message = message
|
||||
self.lintoutput = lintoutput
|
||||
|
||||
@classmethod
|
||||
def from_line(cls, line):
|
||||
m = re.search(r"(\S+):(\d+): \[(\S+)(, \S+)?] (.*)", line)
|
||||
matched = m.groups()
|
||||
filename, lineno, code, message = (matched[0], int(matched[1]),
|
||||
matched[2], matched[-1])
|
||||
if cls._cached_filename != filename:
|
||||
with open(filename) as f:
|
||||
cls._cached_content = list(f.readlines())
|
||||
cls._cached_filename = filename
|
||||
line_content = cls._cached_content[lineno - 1].rstrip()
|
||||
return cls(filename, lineno, line_content, code, message,
|
||||
line.rstrip())
|
||||
|
||||
@classmethod
|
||||
def from_msg_to_dict(cls, msg):
|
||||
"""From the output of pylint msg, to a dict, where each key
|
||||
is a unique error identifier, value is a list of LintOutput
|
||||
"""
|
||||
result = {}
|
||||
for line in msg.splitlines():
|
||||
obj = cls.from_line(line)
|
||||
if obj.is_ignored():
|
||||
continue
|
||||
key = obj.key()
|
||||
if key not in result:
|
||||
result[key] = []
|
||||
result[key].append(obj)
|
||||
return result
|
||||
|
||||
def is_ignored(self):
|
||||
if self.code in ignore_codes:
|
||||
return True
|
||||
if any(self.filename.startswith(name) for name in ignore_modules):
|
||||
return True
|
||||
if any(msg in self.message for msg in ignore_messages):
|
||||
return True
|
||||
return False
|
||||
|
||||
def key(self):
|
||||
if self.code in ["E1101", "E1103"]:
|
||||
# These two types of errors are like Foo class has no member bar.
|
||||
# We discard the source code so that the error will be ignored
|
||||
# next time another Foo.bar is encountered.
|
||||
return self.message, ""
|
||||
return self.message, self.line_content.strip()
|
||||
|
||||
def json(self):
|
||||
return json.dumps(self.__dict__)
|
||||
|
||||
def review_str(self):
|
||||
return ("File %(filename)s\nLine %(lineno)d:%(line_content)s\n"
|
||||
"%(code)s: %(message)s" % self.__dict__)
|
||||
|
||||
|
||||
class ErrorKeys(object):
|
||||
|
||||
@classmethod
|
||||
def print_json(cls, errors, output=sys.stdout):
|
||||
print >>output, "# automatically generated by tools/lintstack.py"
|
||||
for i in sorted(errors.keys()):
|
||||
print >>output, json.dumps(i)
|
||||
|
||||
@classmethod
|
||||
def from_file(cls, filename):
|
||||
keys = set()
|
||||
for line in open(filename):
|
||||
if line and line[0] != "#":
|
||||
d = json.loads(line)
|
||||
keys.add(tuple(d))
|
||||
return keys
|
||||
|
||||
|
||||
def run_pylint():
|
||||
buff = StringIO.StringIO()
|
||||
reporter = text.ParseableTextReporter(output=buff)
|
||||
args = ["--include-ids=y", "-E", "cinder"]
|
||||
lint.Run(args, reporter=reporter, exit=False)
|
||||
val = buff.getvalue()
|
||||
buff.close()
|
||||
return val
|
||||
|
||||
|
||||
def generate_error_keys(msg=None):
|
||||
print "Generating", KNOWN_PYLINT_EXCEPTIONS_FILE
|
||||
if msg is None:
|
||||
msg = run_pylint()
|
||||
errors = LintOutput.from_msg_to_dict(msg)
|
||||
with open(KNOWN_PYLINT_EXCEPTIONS_FILE, "w") as f:
|
||||
ErrorKeys.print_json(errors, output=f)
|
||||
|
||||
|
||||
def validate(newmsg=None):
|
||||
print "Loading", KNOWN_PYLINT_EXCEPTIONS_FILE
|
||||
known = ErrorKeys.from_file(KNOWN_PYLINT_EXCEPTIONS_FILE)
|
||||
if newmsg is None:
|
||||
print "Running pylint. Be patient..."
|
||||
newmsg = run_pylint()
|
||||
errors = LintOutput.from_msg_to_dict(newmsg)
|
||||
|
||||
print "Unique errors reported by pylint: was %d, now %d." \
|
||||
% (len(known), len(errors))
|
||||
passed = True
|
||||
for err_key, err_list in errors.items():
|
||||
for err in err_list:
|
||||
if err_key not in known:
|
||||
print err.lintoutput
|
||||
print
|
||||
passed = False
|
||||
if passed:
|
||||
print "Congrats! pylint check passed."
|
||||
redundant = known - set(errors.keys())
|
||||
if redundant:
|
||||
print "Extra credit: some known pylint exceptions disappeared."
|
||||
for i in sorted(redundant):
|
||||
print json.dumps(i)
|
||||
print "Consider regenerating the exception file if you will."
|
||||
else:
|
||||
print ("Please fix the errors above. If you believe they are false "
|
||||
"positives, run 'tools/lintstack.py generate' to overwrite.")
|
||||
sys.exit(1)
|
||||
|
||||
|
||||
def usage():
|
||||
print """Usage: tools/lintstack.py [generate|validate]
|
||||
To generate pylint_exceptions file: tools/lintstack.py generate
|
||||
To validate the current commit: tools/lintstack.py
|
||||
"""
|
||||
|
||||
|
||||
def main():
|
||||
option = "validate"
|
||||
if len(sys.argv) > 1:
|
||||
option = sys.argv[1]
|
||||
if option == "generate":
|
||||
generate_error_keys()
|
||||
elif option == "validate":
|
||||
validate()
|
||||
else:
|
||||
usage()
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
main()
|
||||
|
|
@ -0,0 +1,59 @@
|
|||
#!/usr/bin/env bash
|
||||
|
||||
# Copyright (c) 2012-2013, AT&T Labs, Yun Mao <yunmao@gmail.com>
|
||||
# All Rights Reserved.
|
||||
#
|
||||
# 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.
|
||||
|
||||
# Use lintstack.py to compare pylint errors.
|
||||
# We run pylint twice, once on HEAD, once on the code before the latest
|
||||
# commit for review.
|
||||
set -e
|
||||
TOOLS_DIR=$(cd $(dirname "$0") && pwd)
|
||||
# Get the current branch name.
|
||||
GITHEAD=`git rev-parse --abbrev-ref HEAD`
|
||||
if [[ "$GITHEAD" == "HEAD" ]]; then
|
||||
# In detached head mode, get revision number instead
|
||||
GITHEAD=`git rev-parse HEAD`
|
||||
echo "Currently we are at commit $GITHEAD"
|
||||
else
|
||||
echo "Currently we are at branch $GITHEAD"
|
||||
fi
|
||||
|
||||
cp -f $TOOLS_DIR/lintstack.py $TOOLS_DIR/lintstack.head.py
|
||||
|
||||
if git rev-parse HEAD^2 2>/dev/null; then
|
||||
# The HEAD is a Merge commit. Here, the patch to review is
|
||||
# HEAD^2, the master branch is at HEAD^1, and the patch was
|
||||
# written based on HEAD^2~1.
|
||||
PREV_COMMIT=`git rev-parse HEAD^2~1`
|
||||
git checkout HEAD~1
|
||||
# The git merge is necessary for reviews with a series of patches.
|
||||
# If not, this is a no-op so won't hurt either.
|
||||
git merge $PREV_COMMIT
|
||||
else
|
||||
# The HEAD is not a merge commit. This won't happen on gerrit.
|
||||
# Most likely you are running against your own patch locally.
|
||||
# We assume the patch to examine is HEAD, and we compare it against
|
||||
# HEAD~1
|
||||
git checkout HEAD~1
|
||||
fi
|
||||
|
||||
# First generate tools/pylint_exceptions from HEAD~1
|
||||
$TOOLS_DIR/lintstack.head.py generate
|
||||
# Then use that as a reference to compare against HEAD
|
||||
git checkout $GITHEAD
|
||||
$TOOLS_DIR/lintstack.head.py
|
||||
echo "Check passed. FYI: the pylint exceptions are:"
|
||||
cat $TOOLS_DIR/pylint_exceptions
|
||||
|
||||
Loading…
Reference in New Issue