def _connect_instances(self, service_id, \
launched_instances, launched_instances_lock, \
self_handlers_lock, servers_lock):
## connect to instances sequentially
_ns = PyroUtils.get_nameserver(self.nshost)
for i in range(self.n_hosts):
launched_instances_lock.acquire()
if launched_instances.empty(): launched_instances_lock.wait()
instance_uri = launched_instances.get()
launched_instances_lock.release()
try:
instance_proxy = PyroUtils.get_proxy(instance_uri, ns = _ns)
except:
print 'PyroGrid._connect_instances: failed to connect to "%s"' % instance_uri
raise
if self.debug:
print 'PyroGrid._connect_instances: instance "%s" on "%s" is ready' \
% (instance_uri, instance_proxy._pyro_suppl['host'])
self._append_instance(service_id, instance_proxy, \
self_handlers_lock, servers_lock)
self.__published[service_id] = True
def _connect_handlers(self, handler_uris, handlers, handlers_lock, hosts_map):
#handlers: a FIFO queue,
#handlers_lock: a Condition lock
#handler (see below): the PyroHandler proxy
## connect to handlers sequentially
_ns = PyroUtils.get_nameserver(self.nshost)
for i in range(self.n_hosts):
try:
handler = PyroUtils.get_proxy(handler_uris[i], ns = _ns)
except:
print 'PyroGrid._connect_handlers: failed to connect to "%s"' % handler_uris[i]
raise
#tell the pyro proxy to close the socket for now.
handler._release()
#tell the handler on which host he's running.
handler.host = hosts_map[handler_uris[i]]
if self.debug:
print 'PyroGrid._connect_handlers: handler "%s" on "%s" is ready' \
% (handler_uris[i], handler._pyro_suppl['host'])
#acquire the lock
handlers_lock.acquire()
#put the handler proxy object into the queue
handlers.put(handler)
if self.debug:
print 'PyroGrid._connect_handlers: notifies "%s" is in the queue' % handler_uris[i]
#update queue status and release lock
handlers_lock.notify()
handlers_lock.release()
