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# Copyright 2012 OpenStack LLC.
# 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.
import os
import sys
import textwrap
import uuid
import prettytable
from ceilometerclient import exc
from ceilometerclient.openstack.common import importutils
# Decorator for cli-args
def arg(*args, **kwargs):
def _decorator(func):
# Because of the sematics of decorator composition if we just append
# to the options list positional options will appear to be backwards.
func.__dict__.setdefault('arguments', []).insert(0, (args, kwargs))
return func
return _decorator
def pretty_choice_list(l):
return ', '.join("'%s'" % i for i in l)
def print_list(objs, fields, field_labels, formatters={}, sortby=0):
pt = prettytable.PrettyTable([f for f in field_labels],
caching=False, print_empty=False)
pt.align = 'l'
for o in objs:
row = []
for field in fields:
if field in formatters:
row.append(formatters[field](o))
else:
data = getattr(o, field, '')
row.append(data)
pt.add_row(row)
print pt.get_string(sortby=field_labels[sortby])
def print_dict(d, dict_property="Property", wrap=0):
pt = prettytable.PrettyTable([dict_property, 'Value'],
caching=False, print_empty=False)
pt.align = 'l'
for k, v in d.iteritems():
# convert dict to str to check length
if isinstance(v, dict):
v = str(v)
if wrap > 0:
v = textwrap.fill(str(v), wrap)
# if value has a newline, add in multiple rows
# e.g. fault with stacktrace
if v and isinstance(v, basestring) and r'\n' in v:
lines = v.strip().split(r'\n')
col1 = k
for line in lines:
pt.add_row([col1, line])
col1 = ''
else:
pt.add_row([k, v])
print pt.get_string()
def find_resource(manager, name_or_id):
"""Helper for the _find_* methods."""
# first try to get entity as integer id
try:
if isinstance(name_or_id, int) or name_or_id.isdigit():
return manager.get(int(name_or_id))
except exc.NotFound:
pass
# now try to get entity as uuid
try:
uuid.UUID(str(name_or_id))
return manager.get(name_or_id)
except (ValueError, exc.NotFound):
pass
# finally try to find entity by name
try:
return manager.find(name=name_or_id)
except exc.NotFound:
msg = "No %s with a name or ID of '%s' exists." % \
(manager.resource_class.__name__.lower(), name_or_id)
raise exc.CommandError(msg)
def string_to_bool(arg):
return arg.strip().lower() in ('t', 'true', 'yes', '1')
def env(*vars, **kwargs):
"""Search for the first defined of possibly many env vars
Returns the first environment variable defined in vars, or
returns the default defined in kwargs.
"""
for v in vars:
value = os.environ.get(v, None)
if value:
return value
return kwargs.get('default', '')
def import_versioned_module(version, submodule=None):
module = 'ceilometerclient.v%s' % version
if submodule:
module = '.'.join((module, submodule))
return importutils.import_module(module)
def args_array_to_dict(kwargs, key_to_convert):
values_to_convert = kwargs.get(key_to_convert)
if values_to_convert:
try:
kwargs[key_to_convert] = dict(v.split("=", 1)
for v in values_to_convert)
except ValueError:
raise exc.CommandError(
'%s must be a list of key=value not "%s"' % (
key_to_convert, values_to_convert))
return kwargs
def exit(msg=''):
if msg:
print >> sys.stderr, msg
sys.exit(1)
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