diff --git a/hacking/__init__.py b/hacking/__init__.py old mode 100755 new mode 100644 index fd1903e9..f745a135 --- a/hacking/__init__.py +++ b/hacking/__init__.py @@ -1,599 +1,14 @@ -#!/usr/bin/env python -# vim: tabstop=4 shiftwidth=4 softtabstop=4 - -# Copyright (c) 2012, Cloudscaling -# All Rights Reserved. +# Copyright (c) 2013 Hewlett-Packard Development Company, L.P. # -# 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 +# 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 +# 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. - -"""OpenStack HACKING file compliance testing - -Built as a sets of pep8 checks using flake8. -""" - -import imp -import logging -import os -import re -import subprocess -import sys -import tokenize -import traceback - -# Don't need this for testing -logging.disable('LOG') - - -def flake8ext(f): - f.name = __name__ - f.version = '0.0.1' - return f - -#H1xx comments -#H2xx except -#H3xx imports -#H4xx docstrings -#H5xx dictionaries/lists -#H6xx calling methods -#H7xx localization -#H8xx git commit messages -#H9xx other - -IMPORT_EXCEPTIONS = ['sqlalchemy', 'migrate', 'nova.db.sqlalchemy.session', - 'nova.db.sqlalchemy.migration.versioning_api'] -# Paste is missing a __init__ in top level directory -START_DOCSTRING_TRIPLE = ['u"""', 'r"""', '"""', "u'''", "r'''", "'''"] -END_DOCSTRING_TRIPLE = ['"""', "'''"] - - -def is_import_exception(mod): - return (mod in IMPORT_EXCEPTIONS or - any(mod.startswith(m + '.') for m in IMPORT_EXCEPTIONS)) - - -def import_normalize(line): - # convert "from x import y" to "import x.y" - # handle "from x import y as z" to "import x.y as z" - split_line = line.split() - if ("import" in line and line.startswith("from ") and "," not in line and - split_line[2] == "import" and split_line[3] != "*" and - split_line[1] != "__future__" and - (len(split_line) == 4 or - (len(split_line) == 6 and split_line[4] == "as"))): - return "import %s.%s" % (split_line[1], split_line[3]) - else: - return line - - -@flake8ext -def hacking_todo_format(physical_line, tokens): - """Check for 'TODO()'. - - nova HACKING guide recommendation for TODO: - Include your name with TODOs as in "#TODO(termie)" - - Okay: #TODO(sdague) - H101: #TODO fail - H101: #TODO (jogo) fail - """ - # TODO(sdague): TODO check shouldn't fail inside of space - pos = physical_line.find('TODO') - pos1 = physical_line.find('TODO(') - pos2 = physical_line.find('#') # make sure it's a comment - if (pos != pos1 and pos2 >= 0 and pos2 < pos and len(tokens) == 0): - return pos, "H101: Use TODO(NAME)" - - -@flake8ext -def hacking_except_format(logical_line): - r"""Check for 'except:'. - - nova HACKING guide recommends not using except: - Do not write "except:", use "except Exception:" at the very least - - Okay: try:\n pass\nexcept Exception:\n pass - H201: except: - """ - if logical_line.startswith("except:"): - yield 6, "H201: no 'except:' at least use 'except Exception:'" - - -@flake8ext -def hacking_except_format_assert(logical_line): - r"""Check for 'assertRaises(Exception'. - - nova HACKING guide recommends not using assertRaises(Exception...): - Do not use overly broad Exception type - - Okay: self.assertRaises(NovaException) - H202: self.assertRaises(Exception) - """ - if logical_line.startswith("self.assertRaises(Exception"): - yield 1, "H202: assertRaises Exception too broad" - - -modules_cache = dict((mod, True) for mod in tuple(sys.modules.keys()) - + sys.builtin_module_names) - -RE_RELATIVE_IMPORT = re.compile('^from\s*[.]') - - -@flake8ext -def hacking_import_rules(logical_line, filename): - r"""Check for imports. - - nova HACKING guide recommends one import per line: - Do not import more than one module per line - - Examples: - Okay: from nova.compute import api - H301: from nova.compute import api, utils - - - Imports should usually be on separate lines. - - nova HACKING guide recommends importing only modules: - Do not import objects, only modules - - Examples: - Okay: from os import path - Okay: from os import path as p - Okay: from os import (path as p) - Okay: import os.path - Okay: from nova.compute import rpcapi - H302: from os.path import dirname as dirname2 - H302: from os.path import (dirname as dirname2) - H303: from os.path import * - H304: from .compute import rpcapi - """ - #NOTE(afazekas): An old style relative import example will not be able to - # pass the doctest, since the relativity depends on the file's locality - #TODO(mordred: We need to split this into 4 different checks so that they - # can be disabled by command line switches properly - - def is_module_for_sure(mod, search_path=sys.path): - mod = mod.replace('(', '') # Ignore parentheses - try: - mod_name = mod - while '.' in mod_name: - pack_name, _sep, mod_name = mod.partition('.') - f, p, d = imp.find_module(pack_name, search_path) - search_path = [p] - imp.find_module(mod_name, search_path) - except ImportError: - try: - # NOTE(vish): handle namespace modules - __import__(mod) - except ImportError, exc: - # NOTE(vish): the import error might be due - # to a missing dependency - missing = str(exc).split()[-1] - if (missing != mod.split('.')[-1] or - "cannot import" in str(exc)): - return True - return False - except Exception: - # NOTE(jogo) don't stack trace if unexpected import error, - # log and continue. - traceback.print_exc() - return False - return True - - def is_module(mod): - """Checks for non module imports.""" - if mod in modules_cache: - return modules_cache[mod] - res = is_module_for_sure(mod) - modules_cache[mod] = res - return res - - current_path = os.path.dirname(filename) - current_mod = os.path.basename(filename) - if current_mod[-3:] == ".py": - current_mod = current_mod[:-3] - - split_line = logical_line.split() - split_line_len = len(split_line) - if (split_line[0] in ('import', 'from') and split_line_len > 1 and - not is_import_exception(split_line[1])): - pos = logical_line.find(',') - if pos != -1: - if split_line[0] == 'from': - yield pos, "H301: one import per line" - return # ',' is not supported by the H302 checker yet - pos = logical_line.find('*') - if pos != -1: - yield pos, "H303: No wildcard (*) import." - return - - if split_line_len in (2, 4, 6) and split_line[1] != "__future__": - if 'from' == split_line[0] and split_line_len > 3: - mod = '.'.join((split_line[1], split_line[3])) - if is_import_exception(mod): - return - if RE_RELATIVE_IMPORT.search(logical_line): - yield logical_line.find('.'), ( - "H304: No relative imports. '%s' is a relative import" - % logical_line) - return - - if not is_module(mod): - yield 0, ("H302: import only modules." - "'%s' does not import a module" % logical_line) - return - - #NOTE(afazekas): import searches first in the package - # The import keyword just imports modules - # The guestfs module now imports guestfs - mod = split_line[1] - if (current_mod != mod and not is_module(mod) and - is_module_for_sure(mod, [current_path])): - yield 0, ("H304: No relative imports." - " '%s' is a relative import" % logical_line) - - -#TODO(jogo): import template: H305 - - -@flake8ext -def hacking_import_alphabetical(logical_line, blank_lines, previous_logical, - indent_level, previous_indent_level): - r"""Check for imports in alphabetical order. - - OpenStack HACKING guide recommendation for imports: - imports in human alphabetical order - - Okay: import os\nimport sys\n\nimport nova\nfrom nova import test - H306: import sys\nimport os - """ - # handle import x - # use .lower since capitalization shouldn't dictate order - split_line = import_normalize(logical_line.strip()).lower().split() - split_previous = import_normalize(previous_logical.strip()).lower().split() - - if blank_lines < 1 and indent_level == previous_indent_level: - length = [2, 4] - if (len(split_line) in length and len(split_previous) in length and - split_line[0] == "import" and split_previous[0] == "import"): - if split_line[1] < split_previous[1]: - yield (0, "H306: imports not in alphabetical order (%s, %s)" - % (split_previous[1], split_line[1])) - - -@flake8ext -def hacking_import_no_db_in_virt(logical_line, filename): - """Check for db calls from nova/virt - - As of grizzly-2 all the database calls have been removed from - nova/virt, and we want to keep it that way. - - H307 - """ - if "nova/virt" in filename and not filename.endswith("fake.py"): - if logical_line.startswith("from nova import db"): - yield (0, "H307: nova.db import not allowed in nova/virt/*") - - -def is_docstring(physical_line, previous_logical): - """Return True if found docstring - 'A docstring is a string literal that occurs as the first statement in a - module, function, class,' - http://www.python.org/dev/peps/pep-0257/#what-is-a-docstring - """ - line = physical_line.lstrip() - start = max([line.find(i) for i in START_DOCSTRING_TRIPLE]) - end = max([line[-4:-1] == i for i in END_DOCSTRING_TRIPLE]) - if (previous_logical.startswith("def ") or - previous_logical.startswith("class ")): - if start is 0: - return True - else: - # Handle multi line comments - return end and start in (-1, len(line) - 4) - - -@flake8ext -def hacking_docstring_start_space(physical_line, previous_logical): - r"""Check for docstring not start with space. - - nova HACKING guide recommendation for docstring: - Docstring should not start with space - - Okay: def foo():\n '''This is good.''' - Okay: def foo():\n a = ''' This is not a docstring.''' - Okay: def foo():\n pass\n ''' This is not.''' - H401: def foo():\n ''' This is not.''' - """ - # short circuit so that we don't fail on our own fail test - # when running under external pep8 - if physical_line.find("H401: def foo()") != -1: - return - - # it's important that we determine this is actually a docstring, - # and not a doc block used somewhere after the first line of a - # function def - if is_docstring(physical_line, previous_logical): - pos = max([physical_line.find(i) for i in START_DOCSTRING_TRIPLE]) - if physical_line[pos + 3] == ' ': - return (pos, "H401: docstring should not start with" - " a space") - - -@flake8ext -def hacking_docstring_one_line(physical_line, previous_logical): - r"""Check one line docstring end. - - nova HACKING guide recommendation for one line docstring: - A one line docstring looks like this and ends in punctuation. - - Okay: def foo():\n '''This is good.''' - Okay: def foo():\n '''This is good too!''' - Okay: def foo():\n '''How about this?''' - Okay: def foo():\n a = '''This is not a docstring''' - Okay: def foo():\n pass\n '''This is not a docstring''' - Okay: class Foo:\n pass\n '''This is not a docstring''' - H402: def foo():\n '''This is not''' - H402: def foo():\n '''Bad punctuation,''' - H402: class Foo:\n '''Bad punctuation,''' - """ - #TODO(jogo) make this apply to multi line docstrings as well - line = physical_line.lstrip() - if is_docstring(physical_line, previous_logical): - pos = max([line.find(i) for i in START_DOCSTRING_TRIPLE]) # start - end = max([line[-4:-1] == i for i in END_DOCSTRING_TRIPLE]) # end - - if pos != -1 and end and len(line) > pos + 4: - if line[-5] not in ['.', '?', '!']: - return pos, "H402: one line docstring needs punctuation." - - -@flake8ext -def hacking_docstring_multiline_end(physical_line, previous_logical, tokens): - r"""Check multi line docstring end. - - nova HACKING guide recommendation for docstring: - Docstring should end on a new line - - Okay: '''foobar\nfoo\nbar\n''' - Okay: def foo():\n '''foobar\nfoo\nbar\n''' - Okay: class Foo:\n '''foobar\nfoo\nbar\n''' - Okay: def foo():\n a = '''not\na\ndocstring''' - Okay: def foo():\n pass\n'''foobar\nfoo\nbar\n d''' - H403: def foo():\n '''foobar\nfoo\nbar\ndocstring''' - H403: class Foo:\n '''foobar\nfoo\nbar\ndocstring'''\n\n - """ - # if find OP tokens, not a docstring - ops = [t for t, _, _, _, _ in tokens if t == tokenize.OP] - if (is_docstring(physical_line, previous_logical) and len(tokens) > 0 and - len(ops) == 0): - pos = max(physical_line.find(i) for i in END_DOCSTRING_TRIPLE) - if physical_line.strip() not in START_DOCSTRING_TRIPLE: - return (pos, "H403: multi line docstring end on new line") - - -@flake8ext -def hacking_docstring_multiline_start(physical_line, previous_logical, tokens): - r"""Check multi line docstring start with summary. - - nova HACKING guide recommendation for docstring: - Docstring should start with A multi line docstring has a one-line summary - - Okay: '''foobar\nfoo\nbar\n''' - Okay: def foo():\n a = '''\nnot\na docstring\n''' - H404: def foo():\n'''\nfoo\nbar\n'''\n\n - """ - if is_docstring(physical_line, previous_logical): - pos = max([physical_line.find(i) for i in START_DOCSTRING_TRIPLE]) - # start of docstring when len(tokens)==0 - if len(tokens) == 0 and pos != -1 and len(physical_line) == pos + 4: - if physical_line.strip() in START_DOCSTRING_TRIPLE: - return (pos, "H404: multi line docstring " - "should start with a summary") - - -@flake8ext -def hacking_no_cr(physical_line): - r"""Check that we only use newlines not carriage returns. - - Okay: import os\nimport sys - # pep8 doesn't yet replace \r in strings, will work on an - # upstream fix - H601 import os\r\nimport sys - """ - pos = physical_line.find('\r') - if pos != -1 and pos == (len(physical_line) - 2): - return (pos, "H601: Windows style line endings not allowed in code") - - -FORMAT_RE = re.compile("%(?:" - "%|" # Ignore plain percents - "(\(\w+\))?" # mapping key - "([#0 +-]?" # flag - "(?:\d+|\*)?" # width - "(?:\.\d+)?" # precision - "[hlL]?" # length mod - "\w))") # type - - -class LocalizationError(Exception): - pass - - -def check_i18n(): - """Generator that checks token stream for localization errors. - - Expects tokens to be ``send``ed one by one. - Raises LocalizationError if some error is found. - """ - while True: - try: - token_type, text, _, _, line = yield - except GeneratorExit: - return - - if (token_type == tokenize.NAME and text == "_" and - not line.startswith('def _(msg):')): - - while True: - token_type, text, start, _, _ = yield - if token_type != tokenize.NL: - break - if token_type != tokenize.OP or text != "(": - continue # not a localization call - - format_string = '' - while True: - token_type, text, start, _, _ = yield - if token_type == tokenize.STRING: - format_string += eval(text) - elif token_type == tokenize.NL: - pass - else: - break - - if not format_string: - raise LocalizationError( - start, "H701: Empty localization string") - if token_type != tokenize.OP: - raise LocalizationError( - start, "H701: Invalid localization call") - if text != ")": - if text == "%": - raise LocalizationError( - start, - "H702: Formatting operation should be outside" - " of localization method call") - elif text == "+": - raise LocalizationError( - start, - "H702: Use bare string concatenation instead of +") - else: - raise LocalizationError( - start, "H702: Argument to _ must be just a string") - - format_specs = FORMAT_RE.findall(format_string) - positional_specs = [(key, spec) for key, spec in format_specs - if not key and spec] - # not spec means %%, key means %(smth)s - if len(positional_specs) > 1: - raise LocalizationError( - start, "H703: Multiple positional placeholders") - - -@flake8ext -def hacking_localization_strings(logical_line, tokens): - r"""Check localization in line. - - Okay: _("This is fine") - Okay: _("This is also fine %s") - H701: _('') - H702: _("Bob" + " foo") - H702: _("Bob %s" % foo) - # H703 check is not quite right, disabled by removing colon - H703 _("%s %s" % (foo, bar)) - """ - # TODO(sdague) actually get these tests working - gen = check_i18n() - next(gen) - try: - map(gen.send, tokens) - gen.close() - except LocalizationError as e: - yield e.args - -#TODO(jogo) Dict and list objects - - -@flake8ext -def hacking_is_not(logical_line): - r"""Check localization in line. - - Okay: if x is not y:\n pass - H901: if not X is Y - H901: if not X.B is Y - """ - split_line = logical_line.split() - if (len(split_line) == 5 and split_line[0] == 'if' and - split_line[1] == 'not' and split_line[3] == 'is'): - yield (logical_line.find('not'), "H901: Use the 'is not' " - "operator for when testing for unequal identities") - - -@flake8ext -def hacking_not_in(logical_line): - r"""Check localization in line. - - Okay: if x not in y:\n pass - Okay: if not (X in Y or X is Z):\n pass - Okay: if not (X in Y):\n pass - H902: if not X in Y - H902: if not X.B in Y - """ - split_line = logical_line.split() - if (len(split_line) == 5 and split_line[0] == 'if' and - split_line[1] == 'not' and split_line[3] == 'in' and not - split_line[2].startswith('(')): - yield (logical_line.find('not'), "H902: Use the 'not in' " - "operator for collection membership evaluation") - - -def once_git_check_commit_title(): - """Check git commit messages. - - nova HACKING recommends not referencing a bug or blueprint in first line, - it should provide an accurate description of the change - H801 - H802 Title limited to 72 chars - """ - #Get title of most recent commit - - subp = subprocess.Popen(['git', 'log', '--no-merges', '--pretty=%s', '-1'], - stdout=subprocess.PIPE) - title = subp.communicate()[0] - if subp.returncode: - raise Exception("git log failed with code %s" % subp.returncode) - - #From https://github.com/openstack/openstack-ci-puppet - # /blob/master/modules/gerrit/manifests/init.pp#L74 - #Changeid|bug|blueprint - git_keywords = (r'(I[0-9a-f]{8,40})|' - '([Bb]ug|[Ll][Pp])[\s\#:]*(\d+)|' - '([Bb]lue[Pp]rint|[Bb][Pp])[\s\#:]*([A-Za-z0-9\\-]+)') - GIT_REGEX = re.compile(git_keywords) - - error = False - #NOTE(jogo) if match regex but over 3 words, acceptable title - if GIT_REGEX.search(title) is not None and len(title.split()) <= 3: - print ("H801: git commit title ('%s') should provide an accurate " - "description of the change, not just a reference to a bug " - "or blueprint" % title.strip()) - error = True - # HACKING.rst recommends commit titles 50 chars or less, but enforces - # a 72 character limit - if len(title.decode('utf-8')) > 72: - print ("H802: git commit title ('%s') should be under 50 chars" - % title.strip()) - error = True - return error - - @classmethod - def add_options(cls, parser): - parser.add_option('--git-message', action='store_true', - default=False, dest='git_message', - help="Check for well-formed git commit messages") - parser.config_options.append('git-message') - - @classmethod - def parse_options(cls, options): - if options.git_message: - once_git_check_commit_title() +# 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. diff --git a/hacking/core.py b/hacking/core.py new file mode 100755 index 00000000..fd1903e9 --- /dev/null +++ b/hacking/core.py @@ -0,0 +1,599 @@ +#!/usr/bin/env python +# vim: tabstop=4 shiftwidth=4 softtabstop=4 + +# Copyright (c) 2012, Cloudscaling +# 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. + +"""OpenStack HACKING file compliance testing + +Built as a sets of pep8 checks using flake8. +""" + +import imp +import logging +import os +import re +import subprocess +import sys +import tokenize +import traceback + +# Don't need this for testing +logging.disable('LOG') + + +def flake8ext(f): + f.name = __name__ + f.version = '0.0.1' + return f + +#H1xx comments +#H2xx except +#H3xx imports +#H4xx docstrings +#H5xx dictionaries/lists +#H6xx calling methods +#H7xx localization +#H8xx git commit messages +#H9xx other + +IMPORT_EXCEPTIONS = ['sqlalchemy', 'migrate', 'nova.db.sqlalchemy.session', + 'nova.db.sqlalchemy.migration.versioning_api'] +# Paste is missing a __init__ in top level directory +START_DOCSTRING_TRIPLE = ['u"""', 'r"""', '"""', "u'''", "r'''", "'''"] +END_DOCSTRING_TRIPLE = ['"""', "'''"] + + +def is_import_exception(mod): + return (mod in IMPORT_EXCEPTIONS or + any(mod.startswith(m + '.') for m in IMPORT_EXCEPTIONS)) + + +def import_normalize(line): + # convert "from x import y" to "import x.y" + # handle "from x import y as z" to "import x.y as z" + split_line = line.split() + if ("import" in line and line.startswith("from ") and "," not in line and + split_line[2] == "import" and split_line[3] != "*" and + split_line[1] != "__future__" and + (len(split_line) == 4 or + (len(split_line) == 6 and split_line[4] == "as"))): + return "import %s.%s" % (split_line[1], split_line[3]) + else: + return line + + +@flake8ext +def hacking_todo_format(physical_line, tokens): + """Check for 'TODO()'. + + nova HACKING guide recommendation for TODO: + Include your name with TODOs as in "#TODO(termie)" + + Okay: #TODO(sdague) + H101: #TODO fail + H101: #TODO (jogo) fail + """ + # TODO(sdague): TODO check shouldn't fail inside of space + pos = physical_line.find('TODO') + pos1 = physical_line.find('TODO(') + pos2 = physical_line.find('#') # make sure it's a comment + if (pos != pos1 and pos2 >= 0 and pos2 < pos and len(tokens) == 0): + return pos, "H101: Use TODO(NAME)" + + +@flake8ext +def hacking_except_format(logical_line): + r"""Check for 'except:'. + + nova HACKING guide recommends not using except: + Do not write "except:", use "except Exception:" at the very least + + Okay: try:\n pass\nexcept Exception:\n pass + H201: except: + """ + if logical_line.startswith("except:"): + yield 6, "H201: no 'except:' at least use 'except Exception:'" + + +@flake8ext +def hacking_except_format_assert(logical_line): + r"""Check for 'assertRaises(Exception'. + + nova HACKING guide recommends not using assertRaises(Exception...): + Do not use overly broad Exception type + + Okay: self.assertRaises(NovaException) + H202: self.assertRaises(Exception) + """ + if logical_line.startswith("self.assertRaises(Exception"): + yield 1, "H202: assertRaises Exception too broad" + + +modules_cache = dict((mod, True) for mod in tuple(sys.modules.keys()) + + sys.builtin_module_names) + +RE_RELATIVE_IMPORT = re.compile('^from\s*[.]') + + +@flake8ext +def hacking_import_rules(logical_line, filename): + r"""Check for imports. + + nova HACKING guide recommends one import per line: + Do not import more than one module per line + + Examples: + Okay: from nova.compute import api + H301: from nova.compute import api, utils + + + Imports should usually be on separate lines. + + nova HACKING guide recommends importing only modules: + Do not import objects, only modules + + Examples: + Okay: from os import path + Okay: from os import path as p + Okay: from os import (path as p) + Okay: import os.path + Okay: from nova.compute import rpcapi + H302: from os.path import dirname as dirname2 + H302: from os.path import (dirname as dirname2) + H303: from os.path import * + H304: from .compute import rpcapi + """ + #NOTE(afazekas): An old style relative import example will not be able to + # pass the doctest, since the relativity depends on the file's locality + #TODO(mordred: We need to split this into 4 different checks so that they + # can be disabled by command line switches properly + + def is_module_for_sure(mod, search_path=sys.path): + mod = mod.replace('(', '') # Ignore parentheses + try: + mod_name = mod + while '.' in mod_name: + pack_name, _sep, mod_name = mod.partition('.') + f, p, d = imp.find_module(pack_name, search_path) + search_path = [p] + imp.find_module(mod_name, search_path) + except ImportError: + try: + # NOTE(vish): handle namespace modules + __import__(mod) + except ImportError, exc: + # NOTE(vish): the import error might be due + # to a missing dependency + missing = str(exc).split()[-1] + if (missing != mod.split('.')[-1] or + "cannot import" in str(exc)): + return True + return False + except Exception: + # NOTE(jogo) don't stack trace if unexpected import error, + # log and continue. + traceback.print_exc() + return False + return True + + def is_module(mod): + """Checks for non module imports.""" + if mod in modules_cache: + return modules_cache[mod] + res = is_module_for_sure(mod) + modules_cache[mod] = res + return res + + current_path = os.path.dirname(filename) + current_mod = os.path.basename(filename) + if current_mod[-3:] == ".py": + current_mod = current_mod[:-3] + + split_line = logical_line.split() + split_line_len = len(split_line) + if (split_line[0] in ('import', 'from') and split_line_len > 1 and + not is_import_exception(split_line[1])): + pos = logical_line.find(',') + if pos != -1: + if split_line[0] == 'from': + yield pos, "H301: one import per line" + return # ',' is not supported by the H302 checker yet + pos = logical_line.find('*') + if pos != -1: + yield pos, "H303: No wildcard (*) import." + return + + if split_line_len in (2, 4, 6) and split_line[1] != "__future__": + if 'from' == split_line[0] and split_line_len > 3: + mod = '.'.join((split_line[1], split_line[3])) + if is_import_exception(mod): + return + if RE_RELATIVE_IMPORT.search(logical_line): + yield logical_line.find('.'), ( + "H304: No relative imports. '%s' is a relative import" + % logical_line) + return + + if not is_module(mod): + yield 0, ("H302: import only modules." + "'%s' does not import a module" % logical_line) + return + + #NOTE(afazekas): import searches first in the package + # The import keyword just imports modules + # The guestfs module now imports guestfs + mod = split_line[1] + if (current_mod != mod and not is_module(mod) and + is_module_for_sure(mod, [current_path])): + yield 0, ("H304: No relative imports." + " '%s' is a relative import" % logical_line) + + +#TODO(jogo): import template: H305 + + +@flake8ext +def hacking_import_alphabetical(logical_line, blank_lines, previous_logical, + indent_level, previous_indent_level): + r"""Check for imports in alphabetical order. + + OpenStack HACKING guide recommendation for imports: + imports in human alphabetical order + + Okay: import os\nimport sys\n\nimport nova\nfrom nova import test + H306: import sys\nimport os + """ + # handle import x + # use .lower since capitalization shouldn't dictate order + split_line = import_normalize(logical_line.strip()).lower().split() + split_previous = import_normalize(previous_logical.strip()).lower().split() + + if blank_lines < 1 and indent_level == previous_indent_level: + length = [2, 4] + if (len(split_line) in length and len(split_previous) in length and + split_line[0] == "import" and split_previous[0] == "import"): + if split_line[1] < split_previous[1]: + yield (0, "H306: imports not in alphabetical order (%s, %s)" + % (split_previous[1], split_line[1])) + + +@flake8ext +def hacking_import_no_db_in_virt(logical_line, filename): + """Check for db calls from nova/virt + + As of grizzly-2 all the database calls have been removed from + nova/virt, and we want to keep it that way. + + H307 + """ + if "nova/virt" in filename and not filename.endswith("fake.py"): + if logical_line.startswith("from nova import db"): + yield (0, "H307: nova.db import not allowed in nova/virt/*") + + +def is_docstring(physical_line, previous_logical): + """Return True if found docstring + 'A docstring is a string literal that occurs as the first statement in a + module, function, class,' + http://www.python.org/dev/peps/pep-0257/#what-is-a-docstring + """ + line = physical_line.lstrip() + start = max([line.find(i) for i in START_DOCSTRING_TRIPLE]) + end = max([line[-4:-1] == i for i in END_DOCSTRING_TRIPLE]) + if (previous_logical.startswith("def ") or + previous_logical.startswith("class ")): + if start is 0: + return True + else: + # Handle multi line comments + return end and start in (-1, len(line) - 4) + + +@flake8ext +def hacking_docstring_start_space(physical_line, previous_logical): + r"""Check for docstring not start with space. + + nova HACKING guide recommendation for docstring: + Docstring should not start with space + + Okay: def foo():\n '''This is good.''' + Okay: def foo():\n a = ''' This is not a docstring.''' + Okay: def foo():\n pass\n ''' This is not.''' + H401: def foo():\n ''' This is not.''' + """ + # short circuit so that we don't fail on our own fail test + # when running under external pep8 + if physical_line.find("H401: def foo()") != -1: + return + + # it's important that we determine this is actually a docstring, + # and not a doc block used somewhere after the first line of a + # function def + if is_docstring(physical_line, previous_logical): + pos = max([physical_line.find(i) for i in START_DOCSTRING_TRIPLE]) + if physical_line[pos + 3] == ' ': + return (pos, "H401: docstring should not start with" + " a space") + + +@flake8ext +def hacking_docstring_one_line(physical_line, previous_logical): + r"""Check one line docstring end. + + nova HACKING guide recommendation for one line docstring: + A one line docstring looks like this and ends in punctuation. + + Okay: def foo():\n '''This is good.''' + Okay: def foo():\n '''This is good too!''' + Okay: def foo():\n '''How about this?''' + Okay: def foo():\n a = '''This is not a docstring''' + Okay: def foo():\n pass\n '''This is not a docstring''' + Okay: class Foo:\n pass\n '''This is not a docstring''' + H402: def foo():\n '''This is not''' + H402: def foo():\n '''Bad punctuation,''' + H402: class Foo:\n '''Bad punctuation,''' + """ + #TODO(jogo) make this apply to multi line docstrings as well + line = physical_line.lstrip() + if is_docstring(physical_line, previous_logical): + pos = max([line.find(i) for i in START_DOCSTRING_TRIPLE]) # start + end = max([line[-4:-1] == i for i in END_DOCSTRING_TRIPLE]) # end + + if pos != -1 and end and len(line) > pos + 4: + if line[-5] not in ['.', '?', '!']: + return pos, "H402: one line docstring needs punctuation." + + +@flake8ext +def hacking_docstring_multiline_end(physical_line, previous_logical, tokens): + r"""Check multi line docstring end. + + nova HACKING guide recommendation for docstring: + Docstring should end on a new line + + Okay: '''foobar\nfoo\nbar\n''' + Okay: def foo():\n '''foobar\nfoo\nbar\n''' + Okay: class Foo:\n '''foobar\nfoo\nbar\n''' + Okay: def foo():\n a = '''not\na\ndocstring''' + Okay: def foo():\n pass\n'''foobar\nfoo\nbar\n d''' + H403: def foo():\n '''foobar\nfoo\nbar\ndocstring''' + H403: class Foo:\n '''foobar\nfoo\nbar\ndocstring'''\n\n + """ + # if find OP tokens, not a docstring + ops = [t for t, _, _, _, _ in tokens if t == tokenize.OP] + if (is_docstring(physical_line, previous_logical) and len(tokens) > 0 and + len(ops) == 0): + pos = max(physical_line.find(i) for i in END_DOCSTRING_TRIPLE) + if physical_line.strip() not in START_DOCSTRING_TRIPLE: + return (pos, "H403: multi line docstring end on new line") + + +@flake8ext +def hacking_docstring_multiline_start(physical_line, previous_logical, tokens): + r"""Check multi line docstring start with summary. + + nova HACKING guide recommendation for docstring: + Docstring should start with A multi line docstring has a one-line summary + + Okay: '''foobar\nfoo\nbar\n''' + Okay: def foo():\n a = '''\nnot\na docstring\n''' + H404: def foo():\n'''\nfoo\nbar\n'''\n\n + """ + if is_docstring(physical_line, previous_logical): + pos = max([physical_line.find(i) for i in START_DOCSTRING_TRIPLE]) + # start of docstring when len(tokens)==0 + if len(tokens) == 0 and pos != -1 and len(physical_line) == pos + 4: + if physical_line.strip() in START_DOCSTRING_TRIPLE: + return (pos, "H404: multi line docstring " + "should start with a summary") + + +@flake8ext +def hacking_no_cr(physical_line): + r"""Check that we only use newlines not carriage returns. + + Okay: import os\nimport sys + # pep8 doesn't yet replace \r in strings, will work on an + # upstream fix + H601 import os\r\nimport sys + """ + pos = physical_line.find('\r') + if pos != -1 and pos == (len(physical_line) - 2): + return (pos, "H601: Windows style line endings not allowed in code") + + +FORMAT_RE = re.compile("%(?:" + "%|" # Ignore plain percents + "(\(\w+\))?" # mapping key + "([#0 +-]?" # flag + "(?:\d+|\*)?" # width + "(?:\.\d+)?" # precision + "[hlL]?" # length mod + "\w))") # type + + +class LocalizationError(Exception): + pass + + +def check_i18n(): + """Generator that checks token stream for localization errors. + + Expects tokens to be ``send``ed one by one. + Raises LocalizationError if some error is found. + """ + while True: + try: + token_type, text, _, _, line = yield + except GeneratorExit: + return + + if (token_type == tokenize.NAME and text == "_" and + not line.startswith('def _(msg):')): + + while True: + token_type, text, start, _, _ = yield + if token_type != tokenize.NL: + break + if token_type != tokenize.OP or text != "(": + continue # not a localization call + + format_string = '' + while True: + token_type, text, start, _, _ = yield + if token_type == tokenize.STRING: + format_string += eval(text) + elif token_type == tokenize.NL: + pass + else: + break + + if not format_string: + raise LocalizationError( + start, "H701: Empty localization string") + if token_type != tokenize.OP: + raise LocalizationError( + start, "H701: Invalid localization call") + if text != ")": + if text == "%": + raise LocalizationError( + start, + "H702: Formatting operation should be outside" + " of localization method call") + elif text == "+": + raise LocalizationError( + start, + "H702: Use bare string concatenation instead of +") + else: + raise LocalizationError( + start, "H702: Argument to _ must be just a string") + + format_specs = FORMAT_RE.findall(format_string) + positional_specs = [(key, spec) for key, spec in format_specs + if not key and spec] + # not spec means %%, key means %(smth)s + if len(positional_specs) > 1: + raise LocalizationError( + start, "H703: Multiple positional placeholders") + + +@flake8ext +def hacking_localization_strings(logical_line, tokens): + r"""Check localization in line. + + Okay: _("This is fine") + Okay: _("This is also fine %s") + H701: _('') + H702: _("Bob" + " foo") + H702: _("Bob %s" % foo) + # H703 check is not quite right, disabled by removing colon + H703 _("%s %s" % (foo, bar)) + """ + # TODO(sdague) actually get these tests working + gen = check_i18n() + next(gen) + try: + map(gen.send, tokens) + gen.close() + except LocalizationError as e: + yield e.args + +#TODO(jogo) Dict and list objects + + +@flake8ext +def hacking_is_not(logical_line): + r"""Check localization in line. + + Okay: if x is not y:\n pass + H901: if not X is Y + H901: if not X.B is Y + """ + split_line = logical_line.split() + if (len(split_line) == 5 and split_line[0] == 'if' and + split_line[1] == 'not' and split_line[3] == 'is'): + yield (logical_line.find('not'), "H901: Use the 'is not' " + "operator for when testing for unequal identities") + + +@flake8ext +def hacking_not_in(logical_line): + r"""Check localization in line. + + Okay: if x not in y:\n pass + Okay: if not (X in Y or X is Z):\n pass + Okay: if not (X in Y):\n pass + H902: if not X in Y + H902: if not X.B in Y + """ + split_line = logical_line.split() + if (len(split_line) == 5 and split_line[0] == 'if' and + split_line[1] == 'not' and split_line[3] == 'in' and not + split_line[2].startswith('(')): + yield (logical_line.find('not'), "H902: Use the 'not in' " + "operator for collection membership evaluation") + + +def once_git_check_commit_title(): + """Check git commit messages. + + nova HACKING recommends not referencing a bug or blueprint in first line, + it should provide an accurate description of the change + H801 + H802 Title limited to 72 chars + """ + #Get title of most recent commit + + subp = subprocess.Popen(['git', 'log', '--no-merges', '--pretty=%s', '-1'], + stdout=subprocess.PIPE) + title = subp.communicate()[0] + if subp.returncode: + raise Exception("git log failed with code %s" % subp.returncode) + + #From https://github.com/openstack/openstack-ci-puppet + # /blob/master/modules/gerrit/manifests/init.pp#L74 + #Changeid|bug|blueprint + git_keywords = (r'(I[0-9a-f]{8,40})|' + '([Bb]ug|[Ll][Pp])[\s\#:]*(\d+)|' + '([Bb]lue[Pp]rint|[Bb][Pp])[\s\#:]*([A-Za-z0-9\\-]+)') + GIT_REGEX = re.compile(git_keywords) + + error = False + #NOTE(jogo) if match regex but over 3 words, acceptable title + if GIT_REGEX.search(title) is not None and len(title.split()) <= 3: + print ("H801: git commit title ('%s') should provide an accurate " + "description of the change, not just a reference to a bug " + "or blueprint" % title.strip()) + error = True + # HACKING.rst recommends commit titles 50 chars or less, but enforces + # a 72 character limit + if len(title.decode('utf-8')) > 72: + print ("H802: git commit title ('%s') should be under 50 chars" + % title.strip()) + error = True + return error + + @classmethod + def add_options(cls, parser): + parser.add_option('--git-message', action='store_true', + default=False, dest='git_message', + help="Check for well-formed git commit messages") + parser.config_options.append('git-message') + + @classmethod + def parse_options(cls, options): + if options.git_message: + once_git_check_commit_title() diff --git a/hacking/tests/test_doctest.py b/hacking/tests/test_doctest.py index 546329d3..42f79d71 100644 --- a/hacking/tests/test_doctest.py +++ b/hacking/tests/test_doctest.py @@ -67,7 +67,7 @@ def load_tests(loader, tests, pattern): flake8_style = engine.get_style_guide(parse_argv=False, ignore='F') options = flake8_style.options - for name, check in hacking.__dict__.items(): + for name, check in hacking.core.__dict__.items(): if not name.startswith("hacking_"): continue for (lineno, (code, source)) in enumerate(_get_lines(check)): diff --git a/setup.cfg b/setup.cfg index 561c5c3a..6ece3a8a 100644 --- a/setup.cfg +++ b/setup.cfg @@ -26,20 +26,20 @@ setup-hooks = [entry_points] flake8.extension = - H101 = hacking:hacking_todo_format - H201 = hacking:hacking_except_format - H202 = hacking:hacking_except_format_assert - H301 = hacking:hacking_import_rules - H306 = hacking:hacking_import_alphabetical - H307 = hacking:hacking_import_no_db_in_virt - H401 = hacking:hacking_docstring_start_space - H402 = hacking:hacking_docstring_one_line - H403 = hacking:hacking_docstring_multiline_end - H404 = hacking:hacking_docstring_multiline_start - H601 = hacking:hacking_no_cr - H700 = hacking:hacking_localization_strings - H901 = hacking:hacking_is_not - H902 = hacking:hacking_not_in + H101 = hacking.core:hacking_todo_format + H201 = hacking.core:hacking_except_format + H202 = hacking.core:hacking_except_format_assert + H301 = hacking.core:hacking_import_rules + H306 = hacking.core:hacking_import_alphabetical + H307 = hacking.core:hacking_import_no_db_in_virt + H401 = hacking.core:hacking_docstring_start_space + H402 = hacking.core:hacking_docstring_one_line + H403 = hacking.core:hacking_docstring_multiline_end + H404 = hacking.core:hacking_docstring_multiline_start + H601 = hacking.core:hacking_no_cr + H700 = hacking.core:hacking_localization_strings + H901 = hacking.core:hacking_is_not + H902 = hacking.core:hacking_not_in [egg_info] tag_build =