def find(self, base_url=None, **kwargs):
"""Find a single item with attributes matching ``**kwargs``.
:param base_url: if provided, the generated URL will be appended to it
"""
kwargs = self._filter_kwargs(kwargs)
rl = self._list(
'%(base_url)s%(query)s' % {
'base_url': self.build_url(base_url=base_url, **kwargs),
'query': '?%s' % parse.urlencode(kwargs) if kwargs else '',
},
self.collection_key)
num = len(rl)
if num == 0:
msg = _("No %(name)s matching %(args)s.") % {
'name': self.resource_class.__name__,
'args': kwargs
}
raise exceptions.NotFound(404, msg)
elif num > 1:
raise exceptions.NoUniqueMatch
else:
return rl[0]
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 find(self, **kwargs):
"""Find a single item with attributes matching ``**kwargs``.
This isn't very efficient: it loads the entire list then filters on
the Python side.
"""
matches = self.findall(**kwargs)
num_matches = len(matches)
if num_matches == 0:
msg = _("No %(name)s matching %(args)s.") % {
'name': self.resource_class.__name__,
'args': kwargs
}
raise exceptions.NotFound(msg)
elif num_matches > 1:
raise exceptions.NoUniqueMatch()
else:
return matches[0]
def find_resource(manager, name_or_id, **find_args):
"""Look for resource in a given manager.
Used as a helper for the _find_* methods.
Example:
.. code-block:: python
def _find_hypervisor(cs, hypervisor):
#Get a hypervisor by name or ID.
return cliutils.find_resource(cs.hypervisors, hypervisor)
"""
# first try to get entity as integer id
try:
return manager.get(int(name_or_id))
except (TypeError, ValueError, exceptions.NotFound):
pass
# now try to get entity as uuid
try:
if six.PY2:
tmp_id = encodeutils.safe_encode(name_or_id)
else:
tmp_id = encodeutils.safe_decode(name_or_id)
if uuidutils.is_uuid_like(tmp_id):
return manager.get(tmp_id)
except (TypeError, ValueError, exceptions.NotFound):
pass
# for str id which is not uuid
if getattr(manager, 'is_alphanum_id_allowed', False):
try:
return manager.get(name_or_id)
except exceptions.NotFound:
pass
try:
try:
return manager.find(human_id=name_or_id, **find_args)
except exceptions.NotFound:
pass
# finally try to find entity by name
try:
resource = getattr(manager, 'resource_class', None)
name_attr = resource.NAME_ATTR if resource else 'name'
kwargs = {name_attr: name_or_id}
kwargs.update(find_args)
return manager.find(**kwargs)
except exceptions.NotFound:
msg = _("No %(name)s with a name or "
"ID of '%(name_or_id)s' exists.") % \
{
"name": manager.resource_class.__name__.lower(),
"name_or_id": name_or_id
}
raise exceptions.CommandError(msg)
except exceptions.NoUniqueMatch:
msg = _("Multiple %(name)s matches found for "
"'%(name_or_id)s', use an ID to be more specific.") % \
{
"name": manager.resource_class.__name__.lower(),
"name_or_id": name_or_id
}
raise exceptions.CommandError(msg)
def __init__(self, auth_system):
super(AuthSystemNotFound, self).__init__(
_("AuthSystemNotFound: %s") % repr(auth_system))
self.auth_system = auth_system
def __init__(self, opt_names):
super(AuthPluginOptionsMissing, self).__init__(
_("Authentication failed. Missing options: %s") %
", ".join(opt_names))
self.opt_names = opt_names
def __init__(self, endpoints=None):
super(AmbiguousEndpoints, self).__init__(
_("AmbiguousEndpoints: %s") % repr(endpoints))
self.endpoints = endpoints
def __init__(self, missing):
self.missing = missing
msg = _("Missing arguments: %s") % ", ".join(missing)
super(MissingArgs, self).__init__(msg)
