def _get_metadata(self):
metadata_file = self.conf.glance_store.filesystem_store_metadata_file
if metadata_file is None:
return {}
try:
with open(metadata_file, 'r') as fptr:
metadata = jsonutils.load(fptr)
glance_store.check_location_metadata(metadata)
return metadata
except exceptions.BackendException as bee:
LOG.error(_('The JSON in the metadata file %(file)s could not '
'be used: %(bee)s An empty dictionary will be '
'returned to the client.')
% dict(file=metadata_file, bee=str(bee)))
return {}
except IOError as ioe:
LOG.error(_('The path for the metadata file %(file)s could not be '
'opened: %(io)s An empty dictionary will be returned '
'to the client.')
% dict(file=metadata_file, io=ioe))
return {}
except Exception as ex:
LOG.exception(_('An error occurred processing the storage systems '
'meta data file: %s. An empty dictionary will be '
'returned to the client.') % str(ex))
return {}
def _get_metadata(self):
metadata_file = self.conf.glance_store.filesystem_store_metadata_file
if metadata_file is None:
return {}
try:
with open(metadata_file, 'r') as fptr:
metadata = jsonutils.load(fptr)
glance_store.check_location_metadata(metadata)
return metadata
except exceptions.BackendException as bee:
LOG.error(
_('The JSON in the metadata file %(file)s could not '
'be used: %(bee)s An empty dictionary will be '
'returned to the client.') %
dict(file=metadata_file, bee=str(bee)))
return {}
except IOError as ioe:
LOG.error(
_('The path for the metadata file %(file)s could not be '
'opened: %(io)s An empty dictionary will be returned '
'to the client.') % dict(file=metadata_file, io=ioe))
return {}
except Exception as ex:
LOG.exception(
_('An error occurred processing the storage systems '
'meta data file: %s. An empty dictionary will be '
'returned to the client.') % str(ex))
return {}
def _validate_metadata(self, metadata_file):
"""Validate metadata against json schema.
If metadata is valid then cache metadata and use it when
creating new image.
:param metadata_file: JSON metadata file path
:raises: BadStoreConfiguration exception if metadata is not valid.
"""
try:
with open(metadata_file, 'rb') as fptr:
metadata = jsonutils.load(fptr)
if isinstance(metadata, dict):
# If metadata is of type dictionary
# i.e. - it contains only one mountpoint
# then convert it to list of dictionary.
metadata = [metadata]
# Validate metadata against json schema
jsonschema.validate(metadata, MULTI_FILESYSTEM_METADATA_SCHEMA)
glance_store.check_location_metadata(metadata)
self.FILESYSTEM_STORE_METADATA = metadata
except (jsonschema.exceptions.ValidationError,
exceptions.BackendException, ValueError) as vee:
err_msg = encodeutils.exception_to_unicode(vee)
reason = _('The JSON in the metadata file %(file)s is '
'not valid and it can not be used: '
'%(vee)s.') % dict(file=metadata_file,
vee=err_msg)
LOG.error(reason)
raise exceptions.BadStoreConfiguration(
store_name="filesystem", reason=reason)
except IOError as ioe:
err_msg = encodeutils.exception_to_unicode(ioe)
reason = _('The path for the metadata file %(file)s could '
'not be accessed: '
'%(ioe)s.') % dict(file=metadata_file,
ioe=err_msg)
LOG.error(reason)
raise exceptions.BadStoreConfiguration(
store_name="filesystem", reason=reason)
def _validate_metadata(self, metadata_file):
"""Validate metadata against json schema.
If metadata is valid then cache metadata and use it when
creating new image.
:param metadata_file: JSON metadata file path
:raises: BadStoreConfiguration exception if metadata is not valid.
"""
try:
with open(metadata_file, 'rb') as fptr:
metadata = jsonutils.load(fptr)
if isinstance(metadata, dict):
# If metadata is of type dictionary
# i.e. - it contains only one mountpoint
# then convert it to list of dictionary.
metadata = [metadata]
# Validate metadata against json schema
jsonschema.validate(metadata, MULTI_FILESYSTEM_METADATA_SCHEMA)
glance_store.check_location_metadata(metadata)
self.FILESYSTEM_STORE_METADATA = metadata
except (jsonschema.exceptions.ValidationError,
exceptions.BackendException, ValueError) as vee:
err_msg = encodeutils.exception_to_unicode(vee)
reason = _('The JSON in the metadata file %(file)s is '
'not valid and it can not be used: '
'%(vee)s.') % dict(file=metadata_file,
vee=err_msg)
LOG.error(reason)
raise exceptions.BadStoreConfiguration(
store_name="filesystem", reason=reason)
except IOError as ioe:
err_msg = encodeutils.exception_to_unicode(ioe)
reason = _('The path for the metadata file %(file)s could '
'not be accessed: '
'%(ioe)s.') % dict(file=metadata_file,
ioe=err_msg)
LOG.error(reason)
raise exceptions.BadStoreConfiguration(
store_name="filesystem", reason=reason)
def test_unicode_dict_list(self):
inner = {'key1': u'somevalue', 'key2': u'somevalue'}
m = {'topkey': inner, 'list': [u'somevalue', u'2'], 'u': u'2'}
glance_store.check_location_metadata(m)
def test_nested_dict(self):
inner = {'key1': u'somevalue', 'key2': u'somevalue'}
inner = {'newkey': inner}
inner = {'anotherkey': inner}
m = {'topkey': inner}
glance_store.check_location_metadata(m)
def test_unicode_dict_list(self):
inner = {'key1': u'somevalue', 'key2': u'somevalue'}
m = {'topkey': inner, 'list': [u'somevalue', u'2'], 'u': u'2'}
glance_store.check_location_metadata(m)
def test_unicode_dict(self):
inner = {'key1': u'somevalue', 'key2': u'somevalue'}
m = {'topkey': inner}
glance_store.check_location_metadata(m)
def test_unicode_list(self):
m = {'key': [u'somevalue', u'2']}
glance_store.check_location_metadata(m)
def test_unicode(self):
m = {'key': u'somevalue'}
glance_store.check_location_metadata(m)
def test_empty(self):
glance_store.check_location_metadata({})
def test_nested_dict(self):
inner = {'key1': u'somevalue', 'key2': u'somevalue'}
inner = {'newkey': inner}
inner = {'anotherkey': inner}
m = {'topkey': inner}
glance_store.check_location_metadata(m)
def test_unicode_dict(self):
inner = {'key1': u'somevalue', 'key2': u'somevalue'}
m = {'topkey': inner}
glance_store.check_location_metadata(m)
def test_unicode_list(self):
m = {'key': [u'somevalue', u'2']}
glance_store.check_location_metadata(m)
def test_unicode(self):
m = {'key': u'somevalue'}
glance_store.check_location_metadata(m)
def test_empty(self):
glance_store.check_location_metadata({})
def check_location_metadata(self, val, key=''):
store.check_location_metadata(val)
def check_location_metadata(self, val, key=''):
store.check_location_metadata(val)