/usr/lib/python2.7/dist-packages/ceilometerclient/common/utils.py is in python-ceilometerclient 2.9.0-0ubuntu1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 | # Copyright 2012 OpenStack Foundation
# 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.
from __future__ import print_function
import os
import textwrap
from oslo_serialization import jsonutils
from oslo_utils import encodeutils
import prettytable
import six
from ceilometerclient import exc
# Decorator for cli-args
def arg(*args, **kwargs):
def _decorator(func):
if 'help' in kwargs:
if 'default' in kwargs:
kwargs['help'] += " Defaults to %s." % kwargs['default']
required = kwargs.get('required', False)
if required:
kwargs['help'] += " Required."
# 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 print_list(objs, fields, field_labels, formatters=None, sortby=0):
"""Print a list of objects as a table, one row per object.
:param objs: Iterable of :class:`Resource`
:param fields: Attributes that correspond to columns, in order
:param field_labels: Labels to use in the heading of the table, default to
fields.
:param formatters: `dict` of callables for field formatting
:param sortby: Index of the field for sorting table rows
"""
formatters = formatters or {}
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})
def _make_default_formatter(field):
return lambda o: getattr(o, field, '')
new_formatters = {}
for field, field_label in six.moves.zip(fields, field_labels):
if field in formatters:
new_formatters[field_label] = formatters[field]
else:
new_formatters[field_label] = _make_default_formatter(field)
kwargs = {} if sortby is None else {'sortby': field_labels[sortby]}
pt = prettytable.PrettyTable(field_labels)
pt.align = 'l'
for o in objs:
row = []
for field in field_labels:
if field in new_formatters:
row.append(new_formatters[field](o))
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 nested_list_of_dict_formatter(field, column_names):
# (TMaddox) Because the formatting scheme actually drops the whole object
# into the formatter, rather than just the specified field, we have to
# extract it and then pass the value.
return lambda o: format_nested_list_of_dict(getattr(o, field),
column_names)
def format_nested_list_of_dict(l, column_names):
pt = prettytable.PrettyTable(caching=False, print_empty=False,
header=True, hrules=prettytable.FRAME,
field_names=column_names)
# Sort by values of first column
if l is not None:
l.sort(key=lambda k: k.get(column_names[0]))
for d in l:
pt.add_row(list(map(lambda k: d[k], column_names)))
return pt.get_string()
def print_dict(d, dict_property="Property", wrap=0):
pt = prettytable.PrettyTable([dict_property, 'Value'], print_empty=False)
pt.align = 'l'
for k, v in sorted(six.iteritems(d)):
# convert dict to str to check length
if isinstance(v, (list, dict)):
v = jsonutils.dumps(v)
# 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:
if wrap > 0:
line = textwrap.fill(six.text_type(line), wrap)
pt.add_row([col1, line])
col1 = ''
else:
if wrap > 0:
v = textwrap.fill(six.text_type(v), wrap)
pt.add_row([k, v])
encoded = encodeutils.safe_encode(pt.get_string())
# FIXME(gordc): https://bugs.launchpad.net/oslo-incubator/+bug/1370710
if six.PY3:
encoded = encoded.decode()
print(encoded)
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 args_array_to_list_of_dicts(kwargs, key_to_convert):
"""Converts ['a=1;b=2','c=3;d=4'] to [{a:1,b:2},{c:3,d:4}]."""
values_to_convert = kwargs.get(key_to_convert)
if values_to_convert:
try:
kwargs[key_to_convert] = []
for lst in values_to_convert:
pairs = lst.split(";")
dct = dict()
for pair in pairs:
kv = pair.split("=", 1)
dct[kv[0]] = kv[1].strip(" \"'") # strip spaces and quotes
kwargs[key_to_convert].append(dct)
except Exception:
raise exc.CommandError(
'%s must be a list of key1=value1;key2=value2;... not "%s"' % (
key_to_convert, values_to_convert))
return kwargs
def key_with_slash_to_nested_dict(kwargs):
nested_kwargs = {}
for k in list(kwargs):
keys = k.split('/', 1)
if len(keys) == 2:
nested_kwargs.setdefault(keys[0], {})[keys[1]] = kwargs[k]
del kwargs[k]
kwargs.update(nested_kwargs)
return kwargs
def merge_nested_dict(dest, source, depth=0):
for (key, value) in six.iteritems(source):
if isinstance(value, dict) and depth:
merge_nested_dict(dest[key], value,
depth=(depth - 1))
else:
dest[key] = value
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', '')
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