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updated newparallel examples, moved into docs
updated newparallel examples, moved into docs

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ipcontrollerapp.py
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#!/usr/bin/env python
# encoding: utf-8
"""
The IPython controller application.
"""
#-----------------------------------------------------------------------------
# Copyright (C) 2008-2009 The IPython Development Team
#
# Distributed under the terms of the BSD License. The full license is in
# the file COPYING, distributed as part of this software.
#-----------------------------------------------------------------------------
#-----------------------------------------------------------------------------
# Imports
#-----------------------------------------------------------------------------
from __future__ import with_statement
import copy
import sys
import os
import logging
# from twisted.application import service
# from twisted.internet import reactor
# from twisted.python import log
import zmq
from zmq.log.handlers import PUBHandler
from IPython.config.loader import Config
from IPython.zmq.parallel import factory
from IPython.zmq.parallel.controller import ControllerFactory
from IPython.zmq.parallel.clusterdir import (
ApplicationWithClusterDir,
ClusterDirConfigLoader
)
# from IPython.kernel.fcutil import FCServiceFactory, FURLError
from IPython.utils.traitlets import Instance, Unicode
from entry_point import generate_exec_key
#-----------------------------------------------------------------------------
# Module level variables
#-----------------------------------------------------------------------------
#: The default config file name for this application
default_config_file_name = u'ipcontroller_config.py'
_description = """Start the IPython controller for parallel computing.
The IPython controller provides a gateway between the IPython engines and
clients. The controller needs to be started before the engines and can be
configured using command line options or using a cluster directory. Cluster
directories contain config, log and security files and are usually located in
your .ipython directory and named as "cluster_<profile>". See the --profile
and --cluster-dir options for details.
"""
#-----------------------------------------------------------------------------
# Default interfaces
#-----------------------------------------------------------------------------
# The default client interfaces for FCClientServiceFactory.interfaces
default_client_interfaces = Config()
default_client_interfaces.Default.url_file = 'ipcontroller-client.url'
# Make this a dict we can pass to Config.__init__ for the default
default_client_interfaces = dict(copy.deepcopy(default_client_interfaces.items()))
# The default engine interfaces for FCEngineServiceFactory.interfaces
default_engine_interfaces = Config()
default_engine_interfaces.Default.url_file = u'ipcontroller-engine.url'
# Make this a dict we can pass to Config.__init__ for the default
default_engine_interfaces = dict(copy.deepcopy(default_engine_interfaces.items()))
#-----------------------------------------------------------------------------
# Service factories
#-----------------------------------------------------------------------------
#
# class FCClientServiceFactory(FCServiceFactory):
# """A Foolscap implementation of the client services."""
#
# cert_file = Unicode(u'ipcontroller-client.pem', config=True)
# interfaces = Instance(klass=Config, kw=default_client_interfaces,
# allow_none=False, config=True)
#
#
# class FCEngineServiceFactory(FCServiceFactory):
# """A Foolscap implementation of the engine services."""
#
# cert_file = Unicode(u'ipcontroller-engine.pem', config=True)
# interfaces = Instance(klass=dict, kw=default_engine_interfaces,
# allow_none=False, config=True)
#
#-----------------------------------------------------------------------------
# Command line options
#-----------------------------------------------------------------------------
class IPControllerAppConfigLoader(ClusterDirConfigLoader):
def _add_arguments(self):
super(IPControllerAppConfigLoader, self)._add_arguments()
paa = self.parser.add_argument
## Hub Config:
paa('--mongodb',
dest='HubFactory.db_class', action='store_const',
const='IPython.zmq.parallel.mongodb.MongoDB',
help='Use MongoDB task storage [default: in-memory]')
paa('--hb',
type=int, dest='HubFactory.hb', nargs=2,
help='The (2) ports the Hub\'s Heartmonitor will use for the heartbeat '
'connections [default: random]',
metavar='Hub.hb_ports')
paa('--ping',
type=int, dest='HubFactory.ping',
help='The frequency at which the Hub pings the engines for heartbeats '
' (in ms) [default: 100]',
metavar='Hub.ping')
# Client config
paa('--client-ip',
type=str, dest='HubFactory.client_ip',
help='The IP address or hostname the Hub will listen on for '
'client connections. Both engine-ip and client-ip can be set simultaneously '
'via --ip [default: loopback]',
metavar='Hub.client_ip')
paa('--client-transport',
type=str, dest='HubFactory.client_transport',
help='The ZeroMQ transport the Hub will use for '
'client connections. Both engine-transport and client-transport can be set simultaneously '
'via --transport [default: tcp]',
metavar='Hub.client_transport')
paa('--query',
type=int, dest='HubFactory.query_port',
help='The port on which the Hub XREP socket will listen for result queries from clients [default: random]',
metavar='Hub.query_port')
paa('--notifier',
type=int, dest='HubFactory.notifier_port',
help='The port on which the Hub PUB socket will listen for notification connections [default: random]',
metavar='Hub.notifier_port')
# Engine config
paa('--engine-ip',
type=str, dest='HubFactory.engine_ip',
help='The IP address or hostname the Hub will listen on for '
'engine connections. This applies to the Hub and its schedulers'
'engine-ip and client-ip can be set simultaneously '
'via --ip [default: loopback]',
metavar='Hub.engine_ip')
paa('--engine-transport',
type=str, dest='HubFactory.engine_transport',
help='The ZeroMQ transport the Hub will use for '
'client connections. Both engine-transport and client-transport can be set simultaneously '
'via --transport [default: tcp]',
metavar='Hub.engine_transport')
# Scheduler config
paa('--mux',
type=int, dest='ControllerFactory.mux', nargs=2,
help='The (2) ports the MUX scheduler will listen on for client,engine '
'connections, respectively [default: random]',
metavar='Scheduler.mux_ports')
paa('--task',
type=int, dest='ControllerFactory.task', nargs=2,
help='The (2) ports the Task scheduler will listen on for client,engine '
'connections, respectively [default: random]',
metavar='Scheduler.task_ports')
paa('--control',
type=int, dest='ControllerFactory.control', nargs=2,
help='The (2) ports the Control scheduler will listen on for client,engine '
'connections, respectively [default: random]',
metavar='Scheduler.control_ports')
paa('--iopub',
type=int, dest='ControllerFactory.iopub', nargs=2,
help='The (2) ports the IOPub scheduler will listen on for client,engine '
'connections, respectively [default: random]',
metavar='Scheduler.iopub_ports')
paa('--scheme',
type=str, dest='ControllerFactory.scheme',
choices = ['pure', 'lru', 'plainrandom', 'weighted', 'twobin','leastload'],
help='select the task scheduler scheme [default: Python LRU]',
metavar='Scheduler.scheme')
paa('--usethreads',
dest='ControllerFactory.usethreads', action="store_true",
help='Use threads instead of processes for the schedulers',
)
## Global config
paa('--log-to-file',
action='store_true', dest='Global.log_to_file',
help='Log to a file in the log directory (default is stdout)')
paa('--log-url',
type=str, dest='Global.log_url',
help='Broadcast logs to an iploggerz process [default: disabled]')
paa('-r','--reuse-key',
action='store_true', dest='Global.reuse_key',
help='Try to reuse existing execution keys.')
paa('--no-secure',
action='store_false', dest='Global.secure',
help='Turn off execution keys (default).')
paa('--secure',
action='store_true', dest='Global.secure',
help='Turn on execution keys.')
paa('--execkey',
type=str, dest='Global.exec_key',
help='path to a file containing an execution key.',
metavar='keyfile')
factory.add_session_arguments(self.parser)
factory.add_registration_arguments(self.parser)
#-----------------------------------------------------------------------------
# The main application
#-----------------------------------------------------------------------------
class IPControllerApp(ApplicationWithClusterDir):
name = u'ipcontrollerz'
description = _description
command_line_loader = IPControllerAppConfigLoader
default_config_file_name = default_config_file_name
auto_create_cluster_dir = True
def create_default_config(self):
super(IPControllerApp, self).create_default_config()
# Don't set defaults for Global.secure or Global.reuse_furls
# as those are set in a component.
self.default_config.Global.import_statements = []
self.default_config.Global.clean_logs = True
self.default_config.Global.secure = False
self.default_config.Global.reuse_key = False
self.default_config.Global.exec_key = "exec_key.key"
def pre_construct(self):
super(IPControllerApp, self).pre_construct()
c = self.master_config
# The defaults for these are set in FCClientServiceFactory and
# FCEngineServiceFactory, so we only set them here if the global
# options have be set to override the class level defaults.
# if hasattr(c.Global, 'reuse_furls'):
# c.FCClientServiceFactory.reuse_furls = c.Global.reuse_furls
# c.FCEngineServiceFactory.reuse_furls = c.Global.reuse_furls
# del c.Global.reuse_furls
# if hasattr(c.Global, 'secure'):
# c.FCClientServiceFactory.secure = c.Global.secure
# c.FCEngineServiceFactory.secure = c.Global.secure
# del c.Global.secure
def construct(self):
# This is the working dir by now.
sys.path.insert(0, '')
c = self.master_config
self.import_statements()
if c.Global.secure:
keyfile = os.path.join(c.Global.security_dir, c.Global.exec_key)
if not c.Global.reuse_key or not os.path.exists(keyfile):
generate_exec_key(keyfile)
c.SessionFactory.exec_key = keyfile
else:
keyfile = os.path.join(c.Global.security_dir, c.Global.exec_key)
if os.path.exists(keyfile):
os.remove(keyfile)
c.SessionFactory.exec_key = ''
try:
self.factory = ControllerFactory(config=c)
self.start_logging()
self.factory.construct()
except:
self.log.error("Couldn't construct the Controller", exc_info=True)
self.exit(1)
def save_urls(self):
"""save the registration urls to files."""
c = self.master_config
sec_dir = c.Global.security_dir
cf = self.factory
with open(os.path.join(sec_dir, 'ipcontroller-engine.url'), 'w') as f:
f.write("%s://%s:%s"%(cf.engine_transport, cf.engine_ip, cf.regport))
with open(os.path.join(sec_dir, 'ipcontroller-client.url'), 'w') as f:
f.write("%s://%s:%s"%(cf.client_transport, cf.client_ip, cf.regport))
def import_statements(self):
statements = self.master_config.Global.import_statements
for s in statements:
try:
self.log.msg("Executing statement: '%s'" % s)
exec s in globals(), locals()
except:
self.log.msg("Error running statement: %s" % s)
def start_logging(self):
super(IPControllerApp, self).start_logging()
if self.master_config.Global.log_url:
context = self.factory.context
lsock = context.socket(zmq.PUB)
lsock.connect(self.master_config.Global.log_url)
handler = PUBHandler(lsock)
handler.root_topic = 'controller'
handler.setLevel(self.log_level)
self.log.addHandler(handler)
#
def start_app(self):
# Start the subprocesses:
self.factory.start()
self.write_pid_file(overwrite=True)
try:
self.factory.loop.start()
except KeyboardInterrupt:
self.log.critical("Interrupted, Exiting...\n")
def launch_new_instance():
"""Create and run the IPython controller"""
app = IPControllerApp()
app.start()
if __name__ == '__main__':
launch_new_instance()