/usr/lib/python3/dist-packages/SoftLayer/utils.py is in python3-softlayer 3.2.0-2.
This file is owned by root:root, with mode 0o644.
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SoftLayer.utils
~~~~~~~~~~~~~~~
Utility function/classes
:license: MIT, see LICENSE for more details.
"""
import re
import six
UUID_RE = re.compile(r'^[0-9a-f\-]{36}$', re.I)
KNOWN_OPERATIONS = ['<=', '>=', '<', '>', '~', '!~', '*=', '^=', '$=', '_=']
configparser = six.moves.configparser # pylint: disable=E1101,C0103
console_input = six.moves.input # pylint: disable=E1101,C0103
string_types = six.string_types # pylint: disable=C0103
StringIO = six.StringIO # pylint: disable=C0103
xmlrpc_client = six.moves.xmlrpc_client # pylint: disable=E1101,C0103
def lookup(dic, key, *keys):
"""A generic dictionary access helper.
This helps simplify code that uses heavily nested dictionaries. It will
return None if any of the keys in *keys do not exist.
::
>>> lookup({'this': {'is': 'nested'}}, 'this', 'is')
nested
>>> lookup({}, 'this', 'is')
None
"""
if keys:
return lookup(dic.get(key, {}), *keys)
return dic.get(key)
class NestedDict(dict):
"""This helps with accessing a heavily nested dictionary.
Dictionary where accessing keys that don't exist will return another
NestedDict object.
"""
def __getitem__(self, key):
if key in self:
return self.get(key)
return self.setdefault(key, NestedDict())
def to_dict(self):
"""Converts a NestedDict instance into a real dictionary.
This is needed for places where strict type checking is done.
"""
new_dict = {}
for key, val in self.items():
if isinstance(val, NestedDict):
new_dict[key] = val.to_dict()
else:
new_dict[key] = val
return new_dict
def query_filter(query):
"""Translate a query-style string to a 'filter'.
Query can be the following formats:
Case Insensitive
'value' OR '*= value' Contains
'value*' OR '^= value' Begins with value
'*value' OR '$= value' Ends with value
'*value*' OR '_= value' Contains value
Case Sensitive
'~ value' Contains
'!~ value' Does not contain
'> value' Greater than value
'< value' Less than value
'>= value' Greater than or equal to value
'<= value' Less than or equal to value
:param string query: query string
"""
try:
return {'operation': int(query)}
except ValueError:
pass
if isinstance(query, string_types):
query = query.strip()
for operation in KNOWN_OPERATIONS:
if query.startswith(operation):
query = "%s %s" % (operation, query[len(operation):].strip())
return {'operation': query}
if query.startswith('*') and query.endswith('*'):
query = "*= %s" % query.strip('*')
elif query.startswith('*'):
query = "$= %s" % query.strip('*')
elif query.endswith('*'):
query = "^= %s" % query.strip('*')
else:
query = "_= %s" % query
return {'operation': query}
class IdentifierMixin(object):
"""Mixin used to resolve ids from other names of objects.
This mixin provides an interface to provide multiple methods for
converting an 'indentifier' to an id
"""
resolvers = []
def resolve_ids(self, identifier):
"""Takes a string and tries to resolve to a list of matching ids.
What exactly 'identifier' can be depends on the resolvers
:param string identifier: identifying string
:returns list:
"""
return resolve_ids(identifier, self.resolvers)
def resolve_ids(identifier, resolvers):
"""Resolves IDs given a list of functions.
:param string identifier: identifier string
:param list resolvers: a list of functions
:returns list:
"""
# Before doing anything, let's see if this is an integer
try:
return [int(identifier)]
except ValueError:
pass # It was worth a shot
# This looks like a globalIdentifier (UUID)
if len(identifier) == 36 and UUID_RE.match(identifier):
return [identifier]
for resolver in resolvers:
ids = resolver(identifier)
if ids:
return ids
return []
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