class Distributer(NmpmlObject):
'''Class for specifying a socket server that queues jobs
for execution by remote clients
The Distributer may take chilld objects of String type. These should be the addresses or names of machines that will run computation clients. If present, the Distributer will start these clients automatically after starting the server. For non-local clients the calling account must have automatically authenticating ssh access to the client machines.
attributes:
Port : the port for the server to run on
Requeue: Should the server requeue jobs (good for fast jobs that may hang,
bad for very long jobs)
'''
_requiredAttributes = ["Name", "Port"]
_specialAttributes = ["Requeue"]
_allowedChildren = ["String", "Comments"]
def __init__(self, node, container=None):
NmpmlObject.__init__(self, node, container)
self.server=None
def Id(self):
return (ADDR, int(self.attrib('Port')))
def start(self):
if not self.server:
doc=self.xpath(1)[0]
self.server=EServer(doc, int(self.attrib('Port')), self.attrib("Requeue"))
self.server.start()
clients = self.getElements('String')
clients=[s.getValue() for s in clients]
#startClients(self.server, clients)
#for cl in clients:
# print cl
# startClient(self.server, cl)
def stop(self):
if self.server:
self.server.stop()
self.server.sever()
self.server=None
def busy(self):
return self.server.busy()
def eval(self, path, meth, args):
#if not self.server:
# self.start()
return self.server.eval(path, meth, args)
def batch(self, path, meth, args):
if not self.server:
self.start()
return self.server.batch(path, meth, args)
self.stop()
def start(self):
if not self.server:
doc=self.xpath(1)[0]
self.server=EServer(doc, int(self.attrib('Port')), self.attrib("Requeue"))
self.server.start()
clients = self.getElements('String')
clients=[s.getValue() for s in clients]
