remove all traces of pylint testing infrastructure

The pylint tests have been broken for several months and
the Jenkins job has also been disabled. There has been
no sign of attempts to address this, so just delete what
remains of the pylint support so developers don't mistakenly
think it is supposed to work with patches they are submitting.

Change-Id: Ifacc99e45acb0e9a72be6c31113e0cf073354f02

6 files changed, 0 insertions, 304 deletions

diff --git a/.gitignore b/.gitignore
index 64fd4031e4..b7c21ef338 100644
--- a/.gitignore
+++ b/.gitignore
@@ -39,5 +39,3 @@ nosetests.xml
 nova/tests/cover/*
 nova/vcsversion.py
 tools/conf/nova.conf*
-tools/lintstack.head.py
-tools/pylint_exceptions
diff --git a/pylintrc b/pylintrc
deleted file mode 100644
index 135eea4d57..0000000000
--- a/pylintrc
+++ /dev/null
@@ -1,38 +0,0 @@
-# The format of this file isn't really documented; just use --generate-rcfile
-
-[Messages Control]
-# NOTE(justinsb): We might want to have a 2nd strict pylintrc in future
-# C0111: Don't require docstrings on every method
-# W0511: TODOs in code comments are fine.
-# W0142: *args and **kwargs are fine.
-# W0622: Redefining id is fine.
-disable=C0111,W0511,W0142,W0622
-
-[Basic]
-# Variable names can be 1 to 31 characters long, with lowercase and underscores
-variable-rgx=[a-z_][a-z0-9_]{0,30}$
-
-# Argument names can be 2 to 31 characters long, with lowercase and underscores
-argument-rgx=[a-z_][a-z0-9_]{1,30}$
-
-# Method names should be at least 3 characters long
-# and be lowecased with underscores
-method-rgx=([a-z_][a-z0-9_]{2,50}|setUp|tearDown)$
-
-# Module names matching nova-* are ok (files in bin/)
-module-rgx=(([a-z_][a-z0-9_]*)|([A-Z][a-zA-Z0-9]+)|(nova-[a-z0-9_-]+))$
-
-# Don't require docstrings on tests.
-no-docstring-rgx=((__.*__)|([tT]est.*)|setUp|tearDown)$
-
-[Design]
-max-public-methods=100
-min-public-methods=0
-max-args=6
-
-[Variables]
-
-# List of additional names supposed to be defined in builtins. Remember that
-# you should avoid to define new builtins when possible.
-# _ is used by our localization
-additional-builtins=_
diff --git a/test-requirements.txt b/test-requirements.txt
index 6c9aee5a1c..9b3e7999f4 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -13,7 +13,6 @@ mox>=0.5.3
 mox3>=0.7.0
 MySQL-python
 psycopg2
-pylint>=1.3.0  # GNU GPL v2
 python-ironicclient>=0.2.1
 python-subunit>=0.0.18
 requests-mock>=0.5.1  # Apache-2.0
diff --git a/tools/lintstack.py b/tools/lintstack.py
deleted file mode 100755
index 186ae9b852..0000000000
--- a/tools/lintstack.py
+++ /dev/null
@@ -1,201 +0,0 @@
-#!/usr/bin/env python
-# Copyright (c) 2012, 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."""
-
-from __future__ import print_function
-
-import cStringIO as StringIO
-import json
-import re
-import sys
-
-from pylint import lint
-
-# 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 nova.tests modules
-ignore_messages = ["An attribute affected in nova.tests"]
-# Note(maoy): we ignore all errors in openstack.common because it should be
-# checked elsewhere. We also ignore nova.tests for now due to high false
-# positive rate.
-# Note(danms): we ignore all errors in nova.objects because the false
-# positive rate should be very high.
-ignore_modules = ["nova/openstack/common/", "nova/tests/", "nova/objects/"]
-
-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("# automatically generated by tools/lintstack.py", file=output)
-        for i in sorted(errors.keys()):
-            print(json.dumps(i), file=output)
-
-    @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()
-    args = ["--msg-template={path}:{line}: [{msg_id}({symbol}), {obj}] {msg}",
-            "-E",
-            "nova"]
-    lint.Run(args, 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()
diff --git a/tools/lintstack.sh b/tools/lintstack.sh
deleted file mode 100755
index d8591d03dd..0000000000
--- a/tools/lintstack.sh
+++ /dev/null
@@ -1,59 +0,0 @@
-#!/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
-
diff --git a/tox.ini b/tox.ini
index 54b714d6f4..a11de78773 100644
--- a/tox.ini
+++ b/tox.ini
@@ -45,9 +45,6 @@ commands =
 commands =
   bash tools/config/generate_sample.sh -b . -p nova -o etc/nova
 
-[testenv:pylint]
-commands = bash tools/lintstack.sh
-
 [testenv:cover]
 # Also do not run test_coverage_ext tests while gathering coverage as those
 # tests conflict with coverage.