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The API version the client sends can now be used to check what the client expects or is capable of. All version tests IPA does will be be named and listed in one module, ipalib.capabilities, which includes a function to test a specific capability against an API version. Similarly to Python's __future__ module, capabilities.py also serves as documentation of backwards-incompatible changes to the API. The first capability to be defined is "messages". Recent enough clients can accept a list of warnings or other info under the "messages" key in the result dict. If a JSON client does not send the API version, it is assumed this is a testing client (e.g. curl from the command line). Such a client "has" all capabilities, but it will always receive a warning mentioning that forward compatibility is not guaranteed. If a XML client does not send the API version, it is assumed it uses the API version before capabilities were introduced. (This is to keep backwards compatibility with clients containing bug https://fedorahosted.org/freeipa/ticket/3294) Whenever a capability is added, the API version must be incremented. To ensure that, capabilities are written to API.txt and checked by `makeapi --validate`. Design page: http://freeipa.org/page/V3/Messages Ticket: https://fedorahosted.org/freeipa/ticket/2732
458 lines
16 KiB
Python
Executable File
458 lines
16 KiB
Python
Executable File
#!/usr/bin/python
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# Authors:
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# Rob Crittenden <rcritten@redhat.com>
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# John Dennis <jdennis@redhat.com>
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# Martin Kosek <mkosek@redhat.com>
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#
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# Copyright (C) 2011 Red Hat
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# see file 'COPYING' for use and warranty information
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# Test the API against a known-good API to ensure that changes aren't made
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# lightly.
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import sys
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import os
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import re
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import inspect
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import operator
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from ipalib import api
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from ipalib.parameters import Param
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from ipalib.output import Output
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from ipalib.text import Gettext, NGettext
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from ipalib.capabilities import capabilities
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API_FILE='API.txt'
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API_FILE_DIFFERENCE = 1
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API_NEW_COMMAND = 2
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API_NO_FILE = 4
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API_DOC_ERROR = 8
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# attributes removed from Param.__kw dictionary
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PARAM_IGNORED_KW_ATTRIBUTES = ('label',
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'doc',
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'normalizer',
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'default_from',
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'hint',
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'flags',
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'sortorder',
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'pattern_errmsg',)
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# attributes removed from Output object
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OUTPUT_IGNORED_ATTRIBUTES = ('doc',
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'flags',)
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def parse_options():
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from optparse import OptionParser
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parser = OptionParser()
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parser.add_option("--validate", dest="validate", action="store_true",
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default=False, help="Validate the API vs the stored API")
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parser.add_option("--no-validate-doc", dest="validate_doc", action="store_false",
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default=True, help="Do not validate documentation")
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options, args = parser.parse_args()
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return options, args
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def param_repr(p):
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"""
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Return parameter repr() for API.txt purposes.
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Some Param attributes do not cause API incompatibility (e.g. doc,
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label or callables) and should not be added to API.txt. These attributes
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are removed from the parameter before repr() is called.
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NOTE: since the parameter is not not deepcopy()'ed before attributes are
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removed, the original parameter is changed in the process. This is OK
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for ./makeapi since we don't need this attributes anyway (except for
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validate_doc() which is, however, called before any param_repr() call).
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"""
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if isinstance(p, Output):
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for attr in OUTPUT_IGNORED_ATTRIBUTES:
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try:
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object.__delattr__(p, attr)
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except AttributeError:
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pass
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return repr(p)
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elif isinstance(p, Param):
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param_kw = p.__dict__['_Param__kw']
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for attr in PARAM_IGNORED_KW_ATTRIBUTES:
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try:
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del param_kw[attr]
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except KeyError:
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pass
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object.__setattr__(p, 'rules', {})
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return repr(p)
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else:
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raise ValueError('Unsupported parameter type!')
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def validate_doc():
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"""
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Iterate over all API commands and perform the following validation:
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* Every command must have documentation
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and it must be marked for international translation
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* Every module hosting a command must have documentation
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and it must be marked for international translation
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* Every module topic must be marked for international translation
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For every error found emit a diagnostic.
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Emit a summary of total errors found.
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Return error flag if errors found, zero otherwise.
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"""
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def is_i18n(obj):
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'Helper utility to determine if object has been internationalized'
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return isinstance(obj, (Gettext, NGettext))
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# The return value
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rval = 0
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# Used to track if we've processed a module already
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modules = {}
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# Initialize error counters
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n_missing_cmd_doc = 0
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n_missing_cmd_i18n = 0
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n_missing_mod_doc = 0
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n_missing_mod_i18n = 0
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# Iterate over every command
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for cmd in api.Command():
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cmd_class = cmd.__class__
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# Skip commands marked as NO_CLI
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if getattr(cmd, 'NO_CLI', False):
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continue
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# Have we processed this module yet?
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if not modules.setdefault(cmd.module, 0):
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# First time seeing this module, validate the module contents
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mod = sys.modules[cmd.module]
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# See if there is a module topic, if so validate it
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topic = getattr(mod, 'topic', None)
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if topic is not None:
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if not is_i18n(topic[1]):
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src_file = inspect.getsourcefile(cmd_class)
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n_missing_mod_i18n += 1
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print "%s: topic in module \"%s\" is not internationalized" % \
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(src_file, cmd.module)
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# Does the module have documentation?
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if mod.__doc__ is None:
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src_file = inspect.getsourcefile(mod)
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n_missing_mod_doc += 1
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print "%s: module \"%s\" has no doc" % \
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(src_file, cmd.module)
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# Yes the module has doc, but is it internationalized?
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elif not is_i18n(mod.__doc__):
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src_file = inspect.getsourcefile(cmd_class)
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n_missing_mod_i18n += 1
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print "%s: module \"%s\" doc is not internationalized" % \
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(src_file, cmd.module)
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# Increment the count of how many commands in this module
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modules[cmd.module] = modules[cmd.module] + 1
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# Does the command have documentation?
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if cmd.__doc__ is None:
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src_file = inspect.getsourcefile(cmd_class)
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line_num = inspect.getsourcelines(cmd_class)[1]
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n_missing_cmd_doc += 1
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print "%s:%d command \"%s\" has no doc" % (src_file, line_num, cmd.name)
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# Yes the command has doc, but is it internationalized?
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elif not is_i18n(cmd.__doc__):
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src_file = inspect.getsourcefile(cmd_class)
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line_num = inspect.getsourcelines(cmd_class)[1]
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n_missing_cmd_i18n += 1
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print "%s:%d command \"%s\" doc is not internationalized" % (src_file, line_num, cmd.name)
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# If any errors, emit summary information and adjust return value
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if n_missing_cmd_doc > 0 or n_missing_cmd_i18n > 0:
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rval = API_DOC_ERROR
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print "%d commands without doc, %d commands whose doc is not i18n" % \
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(n_missing_cmd_doc, n_missing_cmd_i18n)
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if n_missing_mod_doc > 0 or n_missing_mod_i18n > 0:
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rval = API_DOC_ERROR
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print "%d modules without doc, %d modules whose doc is not i18n" % \
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(n_missing_mod_doc, n_missing_mod_i18n)
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return rval
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def make_api():
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"""
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Write a new API file from the current tree.
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"""
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fd = open(API_FILE, 'w')
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for cmd in api.Command():
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fd.write('command: %s\n' % cmd.name)
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fd.write('args: %d,%d,%d\n' % (len(cmd.args), len(cmd.options), len(cmd.output)))
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for a in cmd.args():
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fd.write('arg: %s\n' % param_repr(a))
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for o in sorted(cmd.options(), key=operator.attrgetter('name')):
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fd.write('option: %s\n' % param_repr(o))
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for o in sorted(cmd.output(), key=operator.attrgetter('name')):
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fd.write('output: %s\n' % param_repr(o))
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for name, version in sorted(
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capabilities.items(), key=lambda (k, v): (v, k)):
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fd.write('capability: %s %s\n' % (name, version))
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fd.close()
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return 0
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def find_name(line):
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"""
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Break apart a Param line and pull out the name. It would be nice if we
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could just eval() the line but we wouldn't have defined any validators
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or normalizers it may be using.
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"""
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m = re.match('^[a-zA-Z0-9]+\(\'([a-z][_a-z0-9?\*\+]*)\'.*', line)
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if m:
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name = m.group(1)
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else:
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print "Couldn't find name in: %s" % line
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name = ''
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return name
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def _finalize_command_validation(cmd, found_args, expected_args,
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found_options, expected_options,
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found_output, expected_output):
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passed = True
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# Check the args of the previous command.
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if len(found_args) != expected_args:
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print 'Argument count in %s of %d doesn\'t match expected: %d' % (
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cmd.name, len(found_args), expected_args)
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passed = False
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if len(found_options) != expected_options:
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print 'Options count in %s of %d doesn\'t match expected: %d' % (
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cmd.name, len(found_options), expected_options)
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passed = False
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if len(found_output) != expected_output:
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print 'Output count in %s of %d doesn\'t match expected: %d' % (
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cmd.name, len(found_output), expected_output)
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passed = False
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# Check if there is not a new arg/opt/output in previous command
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for a in cmd.args():
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if a.param_spec not in found_args:
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print 'Argument %s of command %s in ipalib, not in API file:\n%s' % (
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a.param_spec, cmd.name, param_repr(a))
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passed = False
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for o in cmd.options():
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if o.param_spec not in found_options:
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print 'Option %s of command %s in ipalib, not in API file:\n%s' % (
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o.param_spec, cmd.name, param_repr(o))
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passed = False
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for o in cmd.output():
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if o.name not in found_output:
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print 'Output %s of command %s in ipalib, not in API file:\n%s' % (
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o.name, cmd.name, param_repr(o))
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passed = False
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return passed
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def validate_api():
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"""
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Compare the API in the file to the one in ipalib.
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Return a bitwise return code to identify the types of errors found, if
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any.
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"""
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fd = open(API_FILE, 'r')
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lines = fd.readlines()
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fd.close()
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rval = 0
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expected_args = 0
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expected_options = 0
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expected_output = 0
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found_args = []
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found_options = []
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found_output = []
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# First run through the file and compare it to the API
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existing_cmds = []
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existing_capabilities = set()
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cmd = None
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for line in lines:
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line = line.strip()
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if line.startswith('command:'):
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if cmd:
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if not _finalize_command_validation(cmd, found_args, expected_args,
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found_options, expected_options,
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found_output, expected_output):
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rval |= API_FILE_DIFFERENCE
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(arg, name) = line.split(': ', 1)
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if name not in api.Command:
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print "Command %s in API file, not in ipalib" % name
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rval |= API_FILE_DIFFERENCE
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cmd = None
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else:
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existing_cmds.append(name)
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cmd = api.Command[name]
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found_args = []
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found_options = []
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found_output = []
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if line.startswith('args:') and cmd:
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line = line.replace('args: ', '')
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(expected_args, expected_options, expected_output) = line.split(',')
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expected_args = int(expected_args)
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expected_options = int(expected_options)
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expected_output = int(expected_output)
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if line.startswith('arg:') and cmd:
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line = line.replace('arg: ', '')
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found = False
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arg = find_name(line)
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for a in cmd.args():
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if param_repr(a) == line:
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found = True
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else:
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if a.name == arg:
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found = True
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print 'Arg in %s doesn\'t match.\nGot %s\nExpected %s' % (
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name, param_repr(a), line)
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rval |= API_FILE_DIFFERENCE
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if found:
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found_args.append(arg)
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else:
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arg = find_name(line)
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print "Argument '%s' in command '%s' in API file not found" % (arg, name)
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rval |= API_FILE_DIFFERENCE
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if line.startswith('option:') and cmd:
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line = line.replace('option: ', '')
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found = False
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option = find_name(line)
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for o in cmd.options():
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if param_repr(o) == line:
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found = True
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else:
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if o.name == option:
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found = True
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print 'Option in %s doesn\'t match. Got %s Expected %s' % (name, o, line)
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rval |= API_FILE_DIFFERENCE
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if found:
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found_options.append(option)
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else:
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option = find_name(line)
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print "Option '%s' in command '%s' in API file not found" % (option, name)
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rval |= API_FILE_DIFFERENCE
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if line.startswith('output:') and cmd:
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line = line.replace('output: ', '')
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found = False
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output = find_name(line)
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for o in cmd.output():
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if param_repr(o) == line:
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found = True
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else:
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if o.name == output:
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found = True
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print 'Output in %s doesn\'t match. Got %s Expected %s' % (name, o, line)
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rval |= API_FILE_DIFFERENCE
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if found:
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found_output.append(output)
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else:
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output = find_name(line)
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print "Option '%s' in command '%s' in API file not found" % (output, name)
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rval |= API_FILE_DIFFERENCE
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if line.startswith('capability:'):
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cap, version = line.replace('capability: ', '').split(' ', 1)
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existing_capabilities.add(cap)
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try:
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expected_version = str(capabilities[cap])
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except KeyError:
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print "Capability '%s' in API file not found" % cap
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rval |= API_FILE_DIFFERENCE
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else:
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if version != expected_version:
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print (
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"Capability '%s' in API file doesn't match. Got %s, "
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"expected %s.") % (cap, version, expected_version)
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rval |= API_FILE_DIFFERENCE
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if cmd:
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if not _finalize_command_validation(cmd, found_args, expected_args,
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found_options, expected_options,
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found_output, expected_output):
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rval |= API_FILE_DIFFERENCE
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# Now look for new commands not in the current API
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for cmd in api.Command():
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if cmd.name not in existing_cmds:
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print "Command %s in ipalib, not in API" % cmd.name
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rval |= API_NEW_COMMAND
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for cap in capabilities:
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if cap not in existing_capabilities:
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print "Capability %s in ipalib, not in API" % cap
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rval |= API_FILE_DIFFERENCE
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return rval
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def main():
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rval = 0
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options, args = parse_options()
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cfg = dict(
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context='cli',
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in_server=False,
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debug=False,
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verbose=0,
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validate_api=True,
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enable_ra=True,
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mode='developer',
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plugins_on_demand=False,
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)
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api.bootstrap(**cfg)
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api.finalize()
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if options.validate_doc:
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rval |= validate_doc()
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if options.validate:
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if not os.path.exists(API_FILE):
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print 'No %s to validate' % API_FILE
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rval |= API_NO_FILE
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else:
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rval |= validate_api()
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else:
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print "Writing API to API.txt"
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rval |= make_api()
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if rval & API_FILE_DIFFERENCE:
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print ''
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print 'There are one or more changes to the API.\nEither undo the API changes or update API.txt and increment the major version in VERSION.'
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if rval & API_NEW_COMMAND:
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print ''
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print 'There are one or more new commands defined.\nUpdate API.txt and increment the minor version in VERSION.'
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if rval & API_DOC_ERROR:
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print ''
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print 'There are one or more documentation problems.\nYou must fix these before preceeding'
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return rval
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sys.exit(main())
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