def get_value(self, domain, selector):
"""
Returns descriptor value, None if descriptor was not found.
"""
selector = self._version_lookup(domain, selector)
if not selector:
return None
fullpath = self.pathFromSelector(domain, selector) + ".value"
if not os.path.isfile(fullpath):
return None
try:
value = Descriptor.unserialize_value(store_serializer,
open(fullpath, "rb").read())
except:
log.error("Could not unserialize value from file %s", fullpath)
raise
return value
def find_by_value(self, domain, selector_prefix, value_regex):
result = []
# File paths to explore
pathprefix = self.basepath + '/' + domain + selector_prefix
paths = [path for path in self.existing_paths if
path.startswith(pathprefix)]
for path in paths:
# open and run re.match() on every file matching *.value
for name in os.listdir(path):
if os.path.isfile(path + name) and name.endswith('.value'):
contents = Descriptor.unserialize_value(
store_serializer,
open(path + name, 'rb').read())
if re.match(value_regex, contents):
selector = path[len(self.basepath)+len(domain)+1:] +\
name.split('.')[0]
desc = self.get_descriptor(domain, selector)
result.append(desc)
return result
def get_value(self, agent_id, desc_domain, selector):
result = str(self.iface.get_value(str(agent_id), desc_domain,
selector))
if result == "":
return None
return Descriptor.unserialize_value(serializer, result)