def _safe_stat(path, user_metadata):
try:
return metadata.stat(path, user_metadata)
except storage.MalformedPathException:
return dict()
except storage.NotFoundException:
return dict()
def _get_cdmi_json_generator(path, obj_type, **data):
meta = metadata.stat(path, user_metadata=None)
def get_range(range_max, range_tuple=(0, None)):
range_start, range_end = range_tuple
if range_end is None or range_end > range_max:
range_end = range_max
yield '"%s-%s"' % (range_start, range_end)
def get_usermetadata(path, metadata=None):
from eudat_http_api import metadata
yield '%s' % flask_json.dumps(
metadata.get_user_metadata(path, metadata))
def wrap_json_string(gen):
yield '"'
for part in gen:
yield base64.b64encode(part)
yield '"'
def json_list_gen(iterable, func):
yield '[\n'
for i, el in enumerate(iterable):
if i > 0:
yield ',\n "%s"' % func(el)
else:
yield ' "%s"' % func(el)
yield '\n ]'
yield ('objectType', lambda x=None: '"application/cdmi-%s"' % obj_type)
yield ('objectID', lambda x=None: '"%s"' % meta.get('objectID', None))
yield ('objectName', lambda x=None: '"%s"' % meta.get('name', None))
yield ('parentURI',
lambda x=None: '"%s"' % common.add_trailing_slash(
meta.get('base', None)))
yield ('parentID', lambda x=None: '"%s"' % meta.get('parentID', None))
#'domainURI': '%s',
#'capabilitiesURI': '%s',
#'completionStatus': '%s',
#'percentComplete': '%s', # optional
yield ('metadata', partial(get_usermetadata, path))
#'exports': {}, # optional
#'snapshots': [], # optional
if obj_type == 'container':
yield ('childrenrange', partial(get_range,
meta.get('children', None)))
yield ('children', lambda t=(0, None): json_list_gen(
islice(data['dir_listing'], t[0], t[1]), lambda x: x.name))
if obj_type == 'object':
yield ('mimetype', lambda x=None: '"mime"')
yield ('valuerange', partial(get_range, data['file_size']))
yield ('valuetransferencoding', lambda x=None: '"base64"')
yield ('value', lambda x=None: wrap_json_string(data['value_gen']))
def create_dirlist_dict(dir_list, path):
"""Returns a dictionary with the directory entries."""
def make_abs_link(name, path):
return urljoin(path, name)
nav_links = [storage.StorageDir('.', path),
storage.StorageDir('..', common.split_path(path)[0])]
return map(lambda x: {'name': x.name,
'path': x.path,
'metadata': metadata.stat(x.path, True)},
nav_links + dir_list)
def create_dirlist_dict(dir_list, path):
"""Returns a dictionary with the directory entries."""
def make_abs_link(name, path):
return urljoin(path, name)
nav_links = [
storage.StorageDir('.', path),
storage.StorageDir('..',
common.split_path(path)[0])
]
return map(
lambda x: {
'name': x.name,
'path': x.path,
'metadata': metadata.stat(x.path, True)
}, nav_links + dir_list)
def get_cdmi_json_generator(path, obj_type, **data):
meta = metadata.stat(path, user_metadata=None)
def get_range(range_max, range_tuple=(0, None)):
range_start, range_end = range_tuple
if range_end is None or range_end > range_max:
range_end = range_max
yield '"%s-%s"' % (range_start, range_end)
def get_usermetadata(path, metadata=None):
from eudat_http_api import metadata
yield '%s' % flask_json.dumps(
metadata.get_user_metadata(path, metadata))
def wrap_json_string(gen):
yield '"'
for part in gen:
yield base64.b64encode(part)
yield '"'
yield ('objectType', lambda x=None: '"application/cdmi-%s"' % obj_type)
yield ('objectID', lambda x=None: '"%s"' % meta.get('objectID', None))
yield ('objectName', lambda x=None: '"%s"' % meta.get('name', None))
yield ('parentURI', lambda x=None: '"%s"' % common.add_trailing_slash(
meta.get('base', None)))
yield ('parentID', lambda x=None: '"%s"' % meta.get('parentID', None))
#'domainURI': '%s',
#'capabilitiesURI': '%s',
#'completionStatus': '%s',
#'percentComplete': '%s', # optional
yield ('metadata', partial(get_usermetadata, path))
#'exports': {}, # optional
#'snapshots': [], # optional
if obj_type == 'container':
yield ('childrenrange', partial(get_range, meta.get('children', None)))
yield ('children', lambda t=(0, -1): json_list_gen(
data['dir_listing'][t[0]:t[1]], lambda x: x.name))
if obj_type == 'object':
yield ('mimetype', lambda x=None: '"mime"')
yield ('valuerange', partial(get_range, data['file_size']))
yield ('valuetransferencoding', lambda x=None: '"base64"')
yield ('value', lambda x=None: wrap_json_string(data['value_gen']))
def _get_cdmi_json_generator(path, obj_type, **data):
base_uri, obj_name = common.split_path(path)
meta = metadata.stat(path, user_metadata=True)
parent_uri = common.add_trailing_slash(base_uri)
current_app.logger.debug('get stat for name, base: %s, %s' %
(obj_name, base_uri))
parent_object_id = None
try:
parent_meta = metadata.get_user_metadata(base_uri,
user_metadata=['objectID'])
current_app.logger.debug('got parent meta: %s' % parent_meta)
parent_object_id = parent_meta.get('objectID', None)
except storage.NotFoundException:
pass
def get_range(range_max, range_tuple=(0, None)):
if range_tuple is None:
range_start, range_end = 0, None
else:
range_start, range_end = range_tuple
if range_end is None or range_end > range_max:
range_end = range_max
yield flask_json.dumps('%s-%s' % (range_start, range_end))
def wrap_json_string(gen):
yield '"'
for part in gen:
yield b64encode(part)
yield '"'
def json_list_gen(iterable, func):
yield '[\n'
for i, el in enumerate(iterable):
if i > 0:
yield ',\n "%s"' % func(el)
else:
yield ' "%s"' % func(el)
yield '\n ]'
def get_hex_object_id_or_none(meta):
user_meta = meta.get('user_metadata', None)
if user_meta is not None:
obj_id = user_meta.get('objectID', None)
if obj_id is not None:
# obj_id is already stored in hex
return obj_id
return None
yield ('objectType', lambda x=None: 'application/cdmi-%s' % obj_type)
yield ('objectID', lambda x=None: get_hex_object_id_or_none(meta))
yield ('objectName', lambda x=None: obj_name)
yield ('parentURI', lambda x=None: parent_uri)
yield ('parentID', lambda x=None: parent_object_id)
yield ('domainURI', lambda x=None: '/cdmi_domains/%s/' %
get_config_parameter('CDMI_DOMAIN', None))
yield ('capabilitiesURI', lambda x=None: '/cdmi_capabilities/%s/' %
('dataobject' if obj_type == 'object' else obj_type))
yield ('completionStatus', lambda x=None: 'Complete')
#'percentComplete': '%s', # optional
yield ('metadata', lambda x=None: meta['user_metadata'])
#'exports': {}, # optional
#'snapshots': [], # optional
if obj_type == 'container':
yield ('childrenrange', partial(get_range, meta.get('children', None)))
yield ('children', lambda t=(0, None): json_list_gen(
islice(data['dir_listing'], t[0], t[1]), lambda x: x.name))
if obj_type == 'object':
yield ('mimetype', lambda x=None: 'mime')
yield ('valuerange', partial(get_range, meta['size']))
yield ('valuetransferencoding', lambda x=None: 'base64')
yield ('value', lambda x=None: wrap_json_string(data['value_gen']))
