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# Authors:
# Jason Gerard DeRose <jderose@redhat.com>
#
# Copyright (C) 2009 Red Hat
# see file 'COPYING' for use and warranty information
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
Simple description of return values.
"""
import six
from ipalib.plugable import ReadOnly, lock
from ipalib.capabilities import client_has_capability
from ipalib.text import _
if six.PY3:
unicode = str
class Output(ReadOnly):
"""
Simple description of a member in the return value ``dict``.
This class controls both the type of object being returned by
a command as well as how the output will be displayed.
For example, this class defines two return results: an entry
and a value.
>>> from ipalib import crud, output
>>> class user(crud.Update):
...
... has_output = (
... output.Entry('result'),
... output.value,
... )
The order of the values in has_output controls the order of output.
If you have values that you don't want to be printed then add
``'no_display'`` to flags.
The difference between ``'no_display'`` and ``'no_output'`` is
that ``'no_output'`` will prevent a Param value from being returned
at all. ``'no_display'`` will cause the API to return a value, it
simply won't be displayed to the user. This is so some things may
be returned that while not interesting to us, but may be to others.
>>> from ipalib import crud, output
>>> myvalue = output.Output('myvalue', unicode,
... 'Do not print this value', flags=['no_display'],
... )
>>> class user(crud.Update):
...
... has_output = (
... output.Entry('result'),
... myvalue,
... )
"""
type = None
validate = None
doc = None
flags = []
def __init__(self, name, type=None, doc=None, flags=[]):
self.name = name
if type is not None:
if not isinstance(type, tuple):
type = (type,)
self.type = type
if doc is not None:
self.doc = doc
self.flags = flags
lock(self)
def __repr__(self):
return '%s(%s)' % (
self.__class__.__name__,
', '.join(self.__repr_iter())
)
def __repr_iter(self):
yield repr(self.name)
for key in ('type', 'doc', 'flags'):
value = self.__dict__.get(key)
if not value:
continue
if isinstance(value, tuple):
value = repr(list(value))
else:
value = repr(value)
yield '%s=%s' % (key, value)
class Entry(Output):
type = dict
doc = _('A dictionary representing an LDAP entry')
emsg = """%s.validate_output() => %s.validate():
output[%r][%d]: need a %r; got a %r: %r"""
class ListOfEntries(Output):
type = (list, tuple)
doc = _('A list of LDAP entries')
def validate(self, cmd, entries, version):
assert isinstance(entries, self.type)
for (i, entry) in enumerate(entries):
if not isinstance(entry, dict):
raise TypeError(emsg % (cmd.name, self.__class__.__name__,
self.name, i, dict, type(entry), entry)
)
class PrimaryKey(Output):
def validate(self, cmd, value, version):
if client_has_capability(version, 'primary_key_types'):
if hasattr(cmd, 'obj') and cmd.obj and cmd.obj.primary_key:
types = cmd.obj.primary_key.allowed_types
else:
types = (unicode,)
types = types + (type(None),)
else:
types = (unicode,)
if not isinstance(value, types):
raise TypeError(
"%s.validate_output() => %s.validate():\n"
" output[%r]: need %r; got %r: %r" % (
cmd.name, self.__class__.__name__, self.name,
types[0], type(value), value))
class ListOfPrimaryKeys(Output):
def validate(self, cmd, values, version):
if client_has_capability(version, 'primary_key_types'):
types = (tuple, list)
else:
types = (unicode,)
if not isinstance(values, types):
raise TypeError(
"%s.validate_output() => %s.validate():\n"
" output[%r]: need %r; got %r: %r" % (
cmd.name, self.__class__.__name__, self.name,
types[0], type(values), values))
if client_has_capability(version, 'primary_key_types'):
if hasattr(cmd, 'obj') and cmd.obj and cmd.obj.primary_key:
types = cmd.obj.primary_key.allowed_types
else:
types = (unicode,)
for (i, value) in enumerate(values):
if not isinstance(value, types):
raise TypeError(emsg % (
cmd.name, self.__class__.__name__, i, self.name,
types[0], type(value), value))
result = Output('result', doc=_('All commands should at least have a result'))
summary = Output('summary', (unicode, type(None)),
_('User-friendly description of action performed')
)
value = PrimaryKey('value', None,
_("The primary_key value of the entry, e.g. 'jdoe' for a user"),
flags=['no_display'],
)
standard = (summary, result)
standard_entry = (
summary,
Entry('result'),
value,
)
standard_list_of_entries = (
summary,
ListOfEntries('result'),
Output('count', int, _('Number of entries returned')),
Output('truncated', bool, _('True if not all results were returned')),
)
standard_delete = (
summary,
Output('result', dict, _('List of deletions that failed')),
value,
)
standard_multi_delete = (
summary,
Output('result', dict, _('List of deletions that failed')),
ListOfPrimaryKeys('value', flags=['no_display']),
)
standard_boolean = (
summary,
Output('result', bool, _('True means the operation was successful')),
value,
)
standard_value = standard_boolean
simple_value = (
summary,
Output('result', bool, _('True means the operation was successful')),
Output('value', unicode, flags=['no_display']),
)
# custom shim for commands like `trustconfig-show`,
# `automember-default-group-*` which put stuff into output['value'] despite not
# having primary key themselves. Designing commands like this is not a very
# good practice, so please do not use this for new code.
simple_entry = (
summary,
Entry('result'),
Output('value', unicode, flags=['no_display']),
)
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