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# Pyro-based trajectory server
#
# Written by Konrad Hinsen
#
from TrajectoryInspector import TrajectoryInspector
from Scientific import N as Numeric # to enable pickling of arrays
import Pyro.core, Pyro.naming
import socket, sys
class PyroTrajectoryInspector(Pyro.core.ObjBase, TrajectoryInspector):
def __init__(self, filename):
Pyro.core.ObjBase.__init__(self)
TrajectoryInspector.__init__(self, filename)
def close(self):
TrajectoryInspector.close(self)
PyroDaemon.disconnect(self)
class TrajectoryServer(Pyro.core.ObjBase):
def __init__(self, hostname, ip_address):
self.hostname = hostname
self.ip_address = ip_address
self.files = {}
self.exit = 0
Pyro.core.ObjBase.__init__(self)
def publishTrajectory(self, filename):
inspector = PyroTrajectoryInspector(filename)
self.files[filename] = inspector
PyroDaemon.connect(inspector,
ip_address + ':MMTK:trajectory:' + filename)
def unpublishTrajectory(self, filename):
try:
inspector = self.files[filename]
except KeyError:
raise OSError("file not published")
del self.files[filename]
inspector.close()
def stop(self):
for filename, inspector in self.files.items():
del self.files[filename]
inspector.close()
PyroDaemon.disconnect(self)
self.exit = 1
Pyro.core.initServer()
PyroDaemon = Pyro.core.Daemon()
hostname = socket.gethostname()
ip_address = socket.gethostbyname(hostname)
locator = Pyro.naming.NameServerLocator()
try:
pyro_ns = locator.getNS()
except (PyroError,socket.error),x:
pyro_ns = locator.getNS(host=hostname)
PyroDaemon.useNameServer(pyro_ns)
server = TrajectoryServer(hostname, ip_address)
PyroDaemon.connect(server, ip_address + ':MMTK:server')
while 1:
PyroDaemon.handleRequests(10.)
if server.exit:
break
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