5f3d111dbf
Now for wrap input it will take only postive integers as an input and if any negative numbers are give it will give output as "Wrap argument should be a positive integer". Change-Id: I1e62687d65144c16518cdae4c90cf1617ff4cc2d
292 lines
8.4 KiB
Python
292 lines
8.4 KiB
Python
# Copyright 2012 Red Hat, Inc.
|
|
#
|
|
# 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.
|
|
|
|
# W0603: Using the global statement
|
|
# W0621: Redefining name %s from outer scope
|
|
# pylint: disable=W0603,W0621
|
|
|
|
from __future__ import print_function
|
|
|
|
import getpass
|
|
import inspect
|
|
import os
|
|
import sys
|
|
import textwrap
|
|
|
|
from oslo_utils import encodeutils
|
|
from oslo_utils import strutils
|
|
import prettytable
|
|
import six
|
|
from six import moves
|
|
|
|
from zunclient.i18n import _
|
|
|
|
|
|
class MissingArgs(Exception):
|
|
"""Supplied arguments are not sufficient for calling a function."""
|
|
def __init__(self, missing):
|
|
self.missing = missing
|
|
msg = _("Missing arguments: %s") % ", ".join(missing)
|
|
super(MissingArgs, self).__init__(msg)
|
|
|
|
|
|
def validate_args(fn, *args, **kwargs):
|
|
"""Check that the supplied args are sufficient for calling a function.
|
|
|
|
>>> validate_args(lambda a: None)
|
|
Traceback (most recent call last):
|
|
...
|
|
MissingArgs: Missing argument(s): a
|
|
>>> validate_args(lambda a, b, c, d: None, 0, c=1)
|
|
Traceback (most recent call last):
|
|
...
|
|
MissingArgs: Missing argument(s): b, d
|
|
|
|
:param fn: the function to check
|
|
:param arg: the positional arguments supplied
|
|
:param kwargs: the keyword arguments supplied
|
|
"""
|
|
argspec = inspect.getargspec(fn)
|
|
|
|
num_defaults = len(argspec.defaults or [])
|
|
required_args = argspec.args[:len(argspec.args) - num_defaults]
|
|
|
|
def isbound(method):
|
|
return getattr(method, '__self__', None) is not None
|
|
|
|
if isbound(fn):
|
|
required_args.pop(0)
|
|
|
|
missing = [arg for arg in required_args if arg not in kwargs]
|
|
missing = missing[len(args):]
|
|
if missing:
|
|
raise MissingArgs(missing)
|
|
|
|
|
|
def arg(*args, **kwargs):
|
|
"""Decorator for CLI args.
|
|
|
|
Example:
|
|
|
|
>>> @arg("name", help="Name of the new entity")
|
|
... def entity_create(args):
|
|
... pass
|
|
"""
|
|
def _decorator(func):
|
|
add_arg(func, *args, **kwargs)
|
|
return func
|
|
return _decorator
|
|
|
|
|
|
def env(*args, **kwargs):
|
|
"""Returns the first environment variable set.
|
|
|
|
If all are empty, defaults to '' or keyword arg `default`.
|
|
"""
|
|
for arg in args:
|
|
value = os.environ.get(arg)
|
|
if value:
|
|
return value
|
|
return kwargs.get('default', '')
|
|
|
|
|
|
def add_arg(func, *args, **kwargs):
|
|
"""Bind CLI arguments to a shell.py `do_foo` function."""
|
|
|
|
if not hasattr(func, 'arguments'):
|
|
func.arguments = []
|
|
|
|
# NOTE(sirp): avoid dups that can occur when the module is shared across
|
|
# tests.
|
|
if (args, kwargs) not in func.arguments:
|
|
# Because of the semantics of decorator composition if we just append
|
|
# to the options list positional options will appear to be backwards.
|
|
func.arguments.insert(0, (args, kwargs))
|
|
|
|
|
|
def unauthenticated(func):
|
|
"""Adds 'unauthenticated' attribute to decorated function.
|
|
|
|
Usage:
|
|
|
|
>>> @unauthenticated
|
|
... def mymethod(f):
|
|
... pass
|
|
"""
|
|
func.unauthenticated = True
|
|
return func
|
|
|
|
|
|
def isunauthenticated(func):
|
|
"""Checks if the function does not require authentication.
|
|
|
|
Mark such functions with the `@unauthenticated` decorator.
|
|
|
|
:returns: bool
|
|
"""
|
|
return getattr(func, 'unauthenticated', False)
|
|
|
|
|
|
def print_list(objs, fields, formatters=None, sortby_index=0,
|
|
mixed_case_fields=None, field_labels=None):
|
|
"""Print a list or objects as a table, one row per object.
|
|
|
|
:param objs: iterable of :class:`Resource`
|
|
:param fields: attributes that correspond to columns, in order
|
|
:param formatters: `dict` of callables for field formatting
|
|
:param sortby_index: index of the field for sorting table rows
|
|
:param mixed_case_fields: fields corresponding to object attributes that
|
|
have mixed case names (e.g., 'serverId')
|
|
:param field_labels: Labels to use in the heading of the table, default to
|
|
fields.
|
|
"""
|
|
formatters = formatters or {}
|
|
mixed_case_fields = mixed_case_fields or []
|
|
field_labels = field_labels or fields
|
|
if len(field_labels) != len(fields):
|
|
raise ValueError(_("Field labels list %(labels)s has different number "
|
|
"of elements than fields list %(fields)s"),
|
|
{'labels': field_labels, 'fields': fields})
|
|
|
|
if sortby_index is None:
|
|
kwargs = {}
|
|
else:
|
|
kwargs = {'sortby': field_labels[sortby_index]}
|
|
pt = prettytable.PrettyTable(field_labels)
|
|
pt.align = 'l'
|
|
|
|
for o in objs:
|
|
row = []
|
|
for field in fields:
|
|
if field in formatters:
|
|
row.append(formatters[field](o))
|
|
else:
|
|
if field in mixed_case_fields:
|
|
field_name = field.replace(' ', '_')
|
|
else:
|
|
field_name = field.lower().replace(' ', '_')
|
|
data = getattr(o, field_name, '')
|
|
row.append(data)
|
|
pt.add_row(row)
|
|
|
|
if six.PY3:
|
|
print(encodeutils.safe_encode(pt.get_string(**kwargs)).decode())
|
|
else:
|
|
print(encodeutils.safe_encode(pt.get_string(**kwargs)))
|
|
|
|
|
|
def keys_and_vals_to_strs(dictionary):
|
|
"""Recursively convert a dictionary's keys and values to strings.
|
|
|
|
:param dictionary: dictionary whose keys/vals are to be converted to strs
|
|
"""
|
|
def to_str(k_or_v):
|
|
if isinstance(k_or_v, dict):
|
|
return keys_and_vals_to_strs(k_or_v)
|
|
elif isinstance(k_or_v, six.text_type):
|
|
return str(k_or_v)
|
|
else:
|
|
return k_or_v
|
|
return dict((to_str(k), to_str(v)) for k, v in dictionary.items())
|
|
|
|
|
|
def print_dict(dct, dict_property="Property", wrap=0):
|
|
"""Print a `dict` as a table of two columns.
|
|
|
|
:param dct: `dict` to print
|
|
:param dict_property: name of the first column
|
|
:param wrap: wrapping for the second column
|
|
"""
|
|
pt = prettytable.PrettyTable([dict_property, 'Value'])
|
|
pt.align = 'l'
|
|
for k, v in dct.items():
|
|
# convert dict to str to check length
|
|
if isinstance(v, dict):
|
|
v = six.text_type(keys_and_vals_to_strs(v))
|
|
if wrap > 0:
|
|
v = textwrap.fill(six.text_type(v), wrap)
|
|
elif wrap < 0:
|
|
raise ValueError(_("Wrap argument should be a positive integer"))
|
|
# if value has a newline, add in multiple rows
|
|
# e.g. fault with stacktrace
|
|
if v and isinstance(v, six.string_types) and r'\n' in v:
|
|
lines = v.strip().split(r'\n')
|
|
col1 = k
|
|
for line in lines:
|
|
pt.add_row([col1, line])
|
|
col1 = ''
|
|
elif isinstance(v, list):
|
|
val = str([str(i) for i in v])
|
|
pt.add_row([k, val])
|
|
else:
|
|
pt.add_row([k, v])
|
|
|
|
if six.PY3:
|
|
print(encodeutils.safe_encode(pt.get_string()).decode())
|
|
else:
|
|
print(encodeutils.safe_encode(pt.get_string()))
|
|
|
|
|
|
def get_password(max_password_prompts=3):
|
|
"""Read password from TTY."""
|
|
verify = strutils.bool_from_string(env("OS_VERIFY_PASSWORD"))
|
|
pw = None
|
|
if hasattr(sys.stdin, "isatty") and sys.stdin.isatty():
|
|
# Check for Ctrl-D
|
|
try:
|
|
for __ in moves.range(max_password_prompts):
|
|
pw1 = getpass.getpass("OS Password: ")
|
|
if verify:
|
|
pw2 = getpass.getpass("Please verify: ")
|
|
else:
|
|
pw2 = pw1
|
|
if pw1 == pw2 and pw1:
|
|
pw = pw1
|
|
break
|
|
except EOFError:
|
|
pass
|
|
return pw
|
|
|
|
|
|
def service_type(stype):
|
|
"""Adds 'service_type' attribute to decorated function.
|
|
|
|
Usage:
|
|
|
|
.. code-block:: python
|
|
|
|
@service_type('volume')
|
|
def mymethod(f):
|
|
...
|
|
"""
|
|
def inner(f):
|
|
f.service_type = stype
|
|
return f
|
|
return inner
|
|
|
|
|
|
def get_service_type(f):
|
|
"""Retrieves service type from function."""
|
|
return getattr(f, 'service_type', None)
|
|
|
|
|
|
def pretty_choice_list(l):
|
|
return ', '.join("'%s'" % i for i in l)
|
|
|
|
|
|
def exit(msg=''):
|
|
if msg:
|
|
print(msg, file=sys.stderr)
|
|
sys.exit(1)
|