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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.
"""
from inspect import getdoc
from types import NoneType
from plugable import ReadOnly, lock
from text import _
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_dipslay`` 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:
self.type = type
if doc is not None:
self.doc = doc
self.flags = flags
lock(self)
def __repr__(self):
return '%s(%r, %r, %r)' % (
self.__class__.__name__, self.name, self.type, self.doc,
)
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):
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)
)
result = Output('result', doc=_('All commands should at least have a result'))
summary = Output('summary', (unicode, NoneType),
'User-friendly description of action performed'
)
value = Output('value', unicode,
"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_boolean = (
summary,
Output('result', bool, 'True means the operation was successful'),
value,
)
standard_value = standard_boolean
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