488 lines
17 KiB
Python
488 lines
17 KiB
Python
# Copyright (c) 2016, NTT Data
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# All Rights Reserved.
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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 re
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import pep8
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"""
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Guidelines for writing new hacking checks
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- Use only for Masakari specific tests. OpenStack general tests
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should be submitted to the common 'hacking' module.
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- Pick numbers in the range M3xx. Find the current test with
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the highest allocated number and then pick the next value.
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- Keep the test method code in the source file ordered based
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on the M3xx value.
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- List the new rule in the top level HACKING.rst file
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- Add test cases for each new rule to masakari/tests/unit/test_hacking.py
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"""
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UNDERSCORE_IMPORT_FILES = []
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session_check = re.compile(r"\w*def [a-zA-Z0-9].*[(].*session.*[)]")
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cfg_re = re.compile(r".*\scfg\.")
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cfg_opt_re = re.compile(r".*[\s\[]cfg\.[a-zA-Z]*Opt\(")
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vi_header_re = re.compile(r"^#\s+vim?:.+")
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asse_trueinst_re = re.compile(
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r"(.)*assertTrue\(isinstance\((\w|\.|\'|\"|\[|\])+, "
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"(\w|\.|\'|\"|\[|\])+\)\)")
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asse_equal_type_re = re.compile(
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r"(.)*assertEqual\(type\((\w|\.|\'|\"|\[|\])+\), "
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"(\w|\.|\'|\"|\[|\])+\)")
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asse_equal_in_end_with_true_or_false_re = re.compile(
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r"assertEqual\("r"(\w|[][.'\"])+ in (\w|[][.'\", ])+, (True|False)\)")
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asse_equal_in_start_with_true_or_false_re = re.compile(
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r"assertEqual\("r"(True|False), (\w|[][.'\"])+ in (\w|[][.'\", ])+\)")
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asse_equal_end_with_none_re = re.compile(
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r"assertEqual\(.*?,\s+None\)$")
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asse_equal_start_with_none_re = re.compile(
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r"assertEqual\(None,")
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# NOTE(abhishekk): Next two regexes weren't united to one for more readability.
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# asse_true_false_with_in_or_not_in regex checks
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# assertTrue/False(A in B) cases where B argument has no spaces
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# asse_true_false_with_in_or_not_in_spaces regex checks cases
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# where B argument has spaces and starts/ends with [, ', ".
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# For example: [1, 2, 3], "some string", 'another string'.
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# We have to separate these regexes to escape a false positives
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# results. B argument should have spaces only if it starts
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# with [, ", '. Otherwise checking of string
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# "assertFalse(A in B and C in D)" will be false positives.
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# In this case B argument is "B and C in D".
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asse_true_false_with_in_or_not_in = re.compile(
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r"assert(True|False)\("r"(\w|[][.'\"])+( not)? in (\w|[][.'\",])"
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r"+(, .*)?\)")
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asse_true_false_with_in_or_not_in_spaces = re.compile(
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r"assert(True|False)"r"\((\w|[][.'\"])+( not)? in [\[|'|\"](\w|"
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r"[][.'\", ])+[\[|'|\"](, .*)?\)")
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asse_raises_regexp = re.compile(r"assertRaisesRegexp\(")
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conf_attribute_set_re = re.compile(r"CONF\.[a-z0-9_.]+\s*=\s*\w")
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log_translation = re.compile(
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r"(.)*LOG\.(audit|error|critical)\(\s*('|\")")
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log_translation_info = re.compile(
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r"(.)*LOG\.(info)\(\s*(_\(|'|\")")
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log_translation_exception = re.compile(
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r"(.)*LOG\.(exception)\(\s*(_\(|'|\")")
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log_translation_LW = re.compile(
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r"(.)*LOG\.(warning|warn)\(\s*(_\(|'|\")")
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translated_log = re.compile(
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r"(.)*LOG\.(audit|error|info|critical|exception)"
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"\(\s*_\(\s*('|\")")
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mutable_default_args = re.compile(r"^\s*def .+\((.+=\{\}|.+=\[\])")
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string_translation = re.compile(r"[^_]*_\(\s*('|\")")
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underscore_import_check = re.compile(r"(.)*import _(.)*")
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import_translation_for_log_or_exception = re.compile(
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r"(.)*(from\smasakari.i18n\simport)\s_")
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# We need this for cases where they have created their own _ function.
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custom_underscore_check = re.compile(r"(.)*_\s*=\s*(.)*")
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dict_constructor_with_list_copy_re = re.compile(r".*\bdict\((\[)?(\(|\[)")
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http_not_implemented_re = re.compile(r"raise .*HTTPNotImplemented\(")
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spawn_re = re.compile(
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r".*(eventlet|greenthread)\.(?P<spawn_part>spawn(_n)?)\(.*\)")
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contextlib_nested = re.compile(r"^with (contextlib\.)?nested\(")
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doubled_words_re = re.compile(
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r"\b(then?|[iao]n|i[fst]|but|f?or|at|and|[dt]o)\s+\1\b")
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log_string_interpolation = re.compile(r".*LOG\.(error|warning|info"
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r"|critical|exception|debug)"
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r"\([^,]*%[^,]*[,)]")
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def no_db_session_in_public_api(logical_line, filename):
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if "db/api.py" in filename:
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if session_check.match(logical_line):
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yield (0, "M301: public db api methods may not accept"
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" session")
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def use_timeutils_utcnow(logical_line, filename):
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# tools are OK to use the standard datetime module
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if "/tools/" in filename:
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return
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msg = ("M302: timeutils.utcnow() must be used instead of "
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"datetime.%s()")
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datetime_funcs = ['now', 'utcnow']
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for f in datetime_funcs:
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pos = logical_line.find('datetime.%s' % f)
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if pos != -1:
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yield (pos, msg % f)
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def capital_cfg_help(logical_line, tokens):
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msg = "M303: capitalize help string"
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if cfg_re.match(logical_line):
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for t in range(len(tokens)):
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if tokens[t][1] == "help":
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txt = tokens[t + 2][1]
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if len(txt) > 1 and txt[1].islower():
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yield(0, msg)
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def no_vi_headers(physical_line, line_number, lines):
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"""Check for vi editor configuration in source files.
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By default vi modelines can only appear in the first or
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last 5 lines of a source file.
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M304
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"""
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# NOTE(abhishekk): line_number is 1-indexed
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if line_number <= 5 or line_number > len(lines) - 5:
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if vi_header_re.match(physical_line):
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return 0, "M304: Don't put vi configuration in source files"
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def assert_true_instance(logical_line):
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"""Check for assertTrue(isinstance(a, b)) sentences
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M305
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"""
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if asse_trueinst_re.match(logical_line):
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yield (0, "M305: assertTrue(isinstance(a, b)) sentences "
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"not allowed")
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def assert_equal_type(logical_line):
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"""Check for assertEqual(type(A), B) sentences
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M306
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"""
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if asse_equal_type_re.match(logical_line):
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yield (0, "M306: assertEqual(type(A), B) sentences not allowed")
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def assert_equal_none(logical_line):
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"""Check for assertEqual(A, None) or assertEqual(None, A) sentences
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M307
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"""
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res = (asse_equal_start_with_none_re.search(logical_line) or
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asse_equal_end_with_none_re.search(logical_line))
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if res:
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yield (0, "M307: assertEqual(A, None) or assertEqual(None, A) "
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"sentences not allowed")
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def no_translate_debug_logs(logical_line, filename):
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"""Check for 'LOG.debug(_('
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As per our translation policy,
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https://wiki.openstack.org/wiki/LoggingStandards#Log_Translation
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we shouldn't translate debug level logs.
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* This check assumes that 'LOG' is a logger.
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* Use filename so we can start enforcing this in specific folders instead
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of needing to do so all at once.
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M308
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"""
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if logical_line.startswith("LOG.debug(_("):
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yield(0, "M308 Don't translate debug level logs")
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def no_import_translation_in_tests(logical_line, filename):
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"""Check for 'from masakari.i18n import _'
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M309
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"""
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if 'masakari/tests/' in filename:
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res = import_translation_for_log_or_exception.match(logical_line)
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if res:
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yield(0, "M309 Don't import translation in tests")
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def no_setting_conf_directly_in_tests(logical_line, filename):
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"""Check for setting CONF.* attributes directly in tests
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The value can leak out of tests affecting how subsequent tests run.
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Using self.flags(option=value) is the preferred method to temporarily
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set config options in tests.
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M310
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"""
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if 'masakari/tests/' in filename:
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res = conf_attribute_set_re.match(logical_line)
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if res:
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yield (0, "M310: Setting CONF.* attributes directly in "
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"tests is forbidden. Use self.flags(option=value) "
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"instead")
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def validate_log_translations(logical_line, physical_line, filename):
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# Translations are not required in the test directory
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if "masakari/tests" in filename:
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return
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if pep8.noqa(physical_line):
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return
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msg = "M311: LOG.info messages require translations `_LI()`!"
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if log_translation_info.match(logical_line):
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yield (0, msg)
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msg = "M312: LOG.exception messages require translations `_LE()`!"
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if log_translation_exception.match(logical_line):
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yield (0, msg)
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msg = ("M313: LOG.warning, LOG.warn messages require "
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"translations `_LW()`!")
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if log_translation_LW.match(logical_line):
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yield (0, msg)
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msg = "M314: Log messages require translations!"
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if log_translation.match(logical_line):
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yield (0, msg)
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def no_mutable_default_args(logical_line):
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msg = "M315: Method's default argument shouldn't be mutable!"
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if mutable_default_args.match(logical_line):
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yield (0, msg)
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def check_explicit_underscore_import(logical_line, filename):
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"""Check for explicit import of the _ function
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We need to ensure that any files that are using the _() function
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to translate logs are explicitly importing the _ function. We
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can't trust unit test to catch whether the import has been
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added so we need to check for it here.
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"""
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# Build a list of the files that have _ imported. No further
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# checking needed once it is found.
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if filename in UNDERSCORE_IMPORT_FILES:
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pass
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elif (underscore_import_check.match(logical_line) or
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custom_underscore_check.match(logical_line)):
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UNDERSCORE_IMPORT_FILES.append(filename)
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elif (translated_log.match(logical_line) or
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string_translation.match(logical_line)):
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yield(0, "M316: Found use of _() without explicit "
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"import of _ !")
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def use_jsonutils(logical_line, filename):
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# tools are OK to use the standard json module
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if "/tools/" in filename:
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return
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msg = "M317: jsonutils.%(fun)s must be used instead of json.%(fun)s"
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if "json." in logical_line:
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json_funcs = ['dumps(', 'dump(', 'loads(', 'load(']
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for f in json_funcs:
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pos = logical_line.find('json.%s' % f)
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if pos != -1:
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yield (pos, msg % {'fun': f[:-1]})
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def assert_true_or_false_with_in(logical_line):
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"""Check for assertTrue/False(A in B), assertTrue/False(A not in B),
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assertTrue/False(A in B, message) or assertTrue/False(A not in B, message)
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sentences.
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M318
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"""
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res = (asse_true_false_with_in_or_not_in.search(logical_line) or
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asse_true_false_with_in_or_not_in_spaces.search(logical_line))
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if res:
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yield (0, "M318: Use assertIn/NotIn(A, B) rather than "
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"assertTrue/False(A in/not in B) when checking collection "
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"contents.")
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def assert_raises_regexp(logical_line):
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"""Check for usage of deprecated assertRaisesRegexp
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M319
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"""
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res = asse_raises_regexp.search(logical_line)
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if res:
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yield (0, "M319: assertRaisesRegex must be used instead "
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"of assertRaisesRegexp")
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def dict_constructor_with_list_copy(logical_line):
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msg = ("M320: Must use a dict comprehension instead of a dict "
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"constructor with a sequence of key-value pairs.")
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if dict_constructor_with_list_copy_re.match(logical_line):
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yield (0, msg)
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def assert_equal_in(logical_line):
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"""Check for assertEqual(A in B, True), assertEqual(True, A in B),
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assertEqual(A in B, False) or assertEqual(False, A in B) sentences
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M321
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"""
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res = (asse_equal_in_start_with_true_or_false_re.search(logical_line) or
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asse_equal_in_end_with_true_or_false_re.search(logical_line))
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if res:
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yield (0, "M321: Use assertIn/NotIn(A, B) rather than "
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"assertEqual(A in B, True/False) when checking collection "
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"contents.")
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def check_greenthread_spawns(logical_line, physical_line, filename):
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"""Check for use of greenthread.spawn(), greenthread.spawn_n(),
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eventlet.spawn(), and eventlet.spawn_n()
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M322
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"""
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msg = ("M322: Use masakari.utils.%(spawn)s() rather than "
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"greenthread.%(spawn)s() and eventlet.%(spawn)s()")
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if "masakari/utils.py" in filename or "masakari/tests/" in filename:
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return
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match = re.match(spawn_re, logical_line)
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if match:
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yield (0, msg % {'spawn': match.group('spawn_part')})
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def check_no_contextlib_nested(logical_line, filename):
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msg = ("M323: contextlib.nested is deprecated. With Python 2.7"
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"and later the with-statement supports multiple nested objects. "
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"See https://docs.python.org/2/library/contextlib.html"
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"#contextlib.nested for more information. masakari.test.nested() "
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"is an alternative as well.")
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if contextlib_nested.match(logical_line):
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yield(0, msg)
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def check_config_option_in_central_place(logical_line, filename):
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msg = ("M324: Config options should be in the central location "
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"'/masakari/conf/*'. Do not declare new config options outside "
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"of that folder.")
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# That's the correct location
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if "masakari/conf/" in filename:
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return
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if cfg_opt_re.match(logical_line):
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yield(0, msg)
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def check_doubled_words(physical_line, filename):
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"""Check for the common doubled-word typos
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M325
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"""
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msg = ("M325: Doubled word '%(word)s' typo found")
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match = re.search(doubled_words_re, physical_line)
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if match:
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return (0, msg % {'word': match.group(1)})
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def check_python3_no_iteritems(logical_line):
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msg = ("M326: Use six.iteritems() instead of dict.iteritems().")
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if re.search(r".*\.iteritems\(\)", logical_line):
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yield(0, msg)
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def check_python3_no_iterkeys(logical_line):
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msg = ("M327: Use six.iterkeys() instead of dict.iterkeys().")
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if re.search(r".*\.iterkeys\(\)", logical_line):
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yield(0, msg)
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def check_python3_no_itervalues(logical_line):
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msg = ("M328: Use six.itervalues() instead of dict.itervalues().")
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if re.search(r".*\.itervalues\(\)", logical_line):
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yield(0, msg)
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def no_os_popen(logical_line):
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"""Disallow 'os.popen('
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Deprecated library function os.popen() Replace it using subprocess
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https://bugs.launchpad.net/tempest/+bug/1529836
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M329
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"""
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if 'os.popen(' in logical_line:
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yield(0, 'M329 Deprecated library function os.popen(). '
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'Replace it using subprocess module. ')
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def check_delayed_string_interpolation(logical_line, filename, noqa):
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"""M330 String interpolation should be delayed at logging calls.
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M330: LOG.debug('Example: %s' % 'bad')
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Okay: LOG.debug('Example: %s', 'good')
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"""
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msg = ("M330 String interpolation should be delayed to be "
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"handled by the logging code, rather than being done "
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"at the point of the logging call. "
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"Use ',' instead of '%'.")
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if noqa:
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return
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if '/tests/' in filename:
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return
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if log_string_interpolation.match(logical_line):
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yield(logical_line.index('%'), msg)
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def no_log_warn(logical_line):
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"""Disallow 'LOG.warn('
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Deprecated LOG.warn(), instead use LOG.warning
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https://bugs.launchpad.net/senlin/+bug/1508442
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M331
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"""
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msg = ("M331: LOG.warn is deprecated, please use LOG.warning!")
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if "LOG.warn(" in logical_line:
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yield (0, msg)
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def factory(register):
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register(no_db_session_in_public_api)
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register(use_timeutils_utcnow)
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register(capital_cfg_help)
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register(no_vi_headers)
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register(no_import_translation_in_tests)
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register(assert_true_instance)
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register(assert_equal_type)
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register(assert_equal_none)
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register(assert_raises_regexp)
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register(no_translate_debug_logs)
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register(no_setting_conf_directly_in_tests)
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register(validate_log_translations)
|
|
register(no_mutable_default_args)
|
|
register(check_explicit_underscore_import)
|
|
register(use_jsonutils)
|
|
register(assert_true_or_false_with_in)
|
|
register(dict_constructor_with_list_copy)
|
|
register(assert_equal_in)
|
|
register(check_no_contextlib_nested)
|
|
register(check_greenthread_spawns)
|
|
register(check_config_option_in_central_place)
|
|
register(check_doubled_words)
|
|
register(check_python3_no_iteritems)
|
|
register(check_python3_no_iterkeys)
|
|
register(check_python3_no_itervalues)
|
|
register(no_os_popen)
|
|
register(check_delayed_string_interpolation)
|
|
register(no_log_warn)
|