def __init__(self, servers, port, path, subtype):
# Fixed server list, there is no point to a retry on failed ops.
self.should_retry = False
# Replace any occurrence of locahost with output of gethostname()
# before parsing to match Machine fields of QMF objects later on.
host = socket.gethostname()
servers = string.replace(servers, "localhost", host)
self.servers = host_list(servers,
default_scheme="http",
default_port=port,
default_path=path)
try:
self.nice = _nice[subtype]
except:
self.nice = subtype
def _find_server(self, machine, refresh=False):
'''
Search the cached server list for machine using _get_host.
If the server list is empty or refresh is True, get a new list
of endpoints from the Aviary locator object and generate a new
server list.
'''
# If we already have a list of values then return that list unless
# refresh is True
self._lock.acquire()
try:
if self.servers is None or refresh:
log.debug("AviaryOperations: refresh server list for %s %s" \
% (self.resource, self.subtype))
try:
result = self.locator.get_endpoints(self.resource,
self.subtype)
except Exception, e:
result = _AviaryCommon._pretty_result(e,
self.locator.locator_uri)
log.debug("AviaryOperations: failed to get endpoints, " \
"exception message '%s'" % result.message)
raise result
urls = []
# If it's not okay, we just produce an empty sever list
if result.status.code == "OK":
for r in result.resources:
urls.extend(r.location)
urls = ",".join(urls)
if urls == "":
log.info("AviaryOperations: locator returned " \
"no endpoints for %s %s" % (self.resource,
self.subtype))
# Parse the urls and produce a dictionary of
# sage_URLs by machine
self.servers = host_list(urls)
scheme, host = _get_host(machine, self.servers)
