#!/usr/bin/env python # encoding: utf-8 """ The IPython controller application. Authors: * Brian Granger * MinRK """ #----------------------------------------------------------------------------- # Copyright (C) 2008-2011 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 os import socket import stat import sys import uuid from multiprocessing import Process import zmq from zmq.devices import ProcessMonitoredQueue from zmq.log.handlers import PUBHandler from zmq.utils import jsonapi as json from IPython.config.application import boolean_flag from IPython.core.profiledir import ProfileDir from IPython.parallel.apps.baseapp import ( BaseParallelApplication, base_aliases, base_flags, ) from IPython.utils.importstring import import_item from IPython.utils.traitlets import Instance, Unicode, Bool, List, Dict # from IPython.parallel.controller.controller import ControllerFactory from IPython.zmq.session import Session from IPython.parallel.controller.heartmonitor import HeartMonitor from IPython.parallel.controller.hub import HubFactory from IPython.parallel.controller.scheduler import TaskScheduler,launch_scheduler from IPython.parallel.controller.sqlitedb import SQLiteDB from IPython.parallel.util import signal_children, split_url, asbytes # conditional import of MongoDB backend class try: from IPython.parallel.controller.mongodb import MongoDB except ImportError: maybe_mongo = [] else: maybe_mongo = [MongoDB] #----------------------------------------------------------------------------- # 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 "profile_name". See the `profile` and `profile_dir` options for details. """ #----------------------------------------------------------------------------- # The main application #----------------------------------------------------------------------------- flags = {} flags.update(base_flags) flags.update({ 'usethreads' : ( {'IPControllerApp' : {'use_threads' : True}}, 'Use threads instead of processes for the schedulers'), 'sqlitedb' : ({'HubFactory' : {'db_class' : 'IPython.parallel.controller.sqlitedb.SQLiteDB'}}, 'use the SQLiteDB backend'), 'mongodb' : ({'HubFactory' : {'db_class' : 'IPython.parallel.controller.mongodb.MongoDB'}}, 'use the MongoDB backend'), 'dictdb' : ({'HubFactory' : {'db_class' : 'IPython.parallel.controller.dictdb.DictDB'}}, 'use the in-memory DictDB backend'), 'reuse' : ({'IPControllerApp' : {'reuse_files' : True}}, 'reuse existing json connection files') }) flags.update(boolean_flag('secure', 'IPControllerApp.secure', "Use HMAC digests for authentication of messages.", "Don't authenticate messages." )) aliases = dict( secure = 'IPControllerApp.secure', ssh = 'IPControllerApp.ssh_server', location = 'IPControllerApp.location', ident = 'Session.session', user = 'Session.username', keyfile = 'Session.keyfile', url = 'HubFactory.url', ip = 'HubFactory.ip', transport = 'HubFactory.transport', port = 'HubFactory.regport', ping = 'HeartMonitor.period', scheme = 'TaskScheduler.scheme_name', hwm = 'TaskScheduler.hwm', ) aliases.update(base_aliases) class IPControllerApp(BaseParallelApplication): name = u'ipcontroller' description = _description config_file_name = Unicode(default_config_file_name) classes = [ProfileDir, Session, HubFactory, TaskScheduler, HeartMonitor, SQLiteDB] + maybe_mongo # change default to True auto_create = Bool(True, config=True, help="""Whether to create profile dir if it doesn't exist.""") reuse_files = Bool(False, config=True, help='Whether to reuse existing json connection files.' ) secure = Bool(True, config=True, help='Whether to use HMAC digests for extra message authentication.' ) ssh_server = Unicode(u'', config=True, help="""ssh url for clients to use when connecting to the Controller processes. It should be of the form: [user@]server[:port]. The Controller's listening addresses must be accessible from the ssh server""", ) location = Unicode(u'', config=True, help="""The external IP or domain name of the Controller, used for disambiguating engine and client connections.""", ) import_statements = List([], config=True, help="import statements to be run at startup. Necessary in some environments" ) use_threads = Bool(False, config=True, help='Use threads instead of processes for the schedulers', ) # internal children = List() mq_class = Unicode('zmq.devices.ProcessMonitoredQueue') def _use_threads_changed(self, name, old, new): self.mq_class = 'zmq.devices.%sMonitoredQueue'%('Thread' if new else 'Process') aliases = Dict(aliases) flags = Dict(flags) def save_connection_dict(self, fname, cdict): """save a connection dict to json file.""" c = self.config url = cdict['url'] location = cdict['location'] if not location: try: proto,ip,port = split_url(url) except AssertionError: pass else: location = socket.gethostbyname_ex(socket.gethostname())[2][-1] cdict['location'] = location fname = os.path.join(self.profile_dir.security_dir, fname) with open(fname, 'wb') as f: f.write(json.dumps(cdict, indent=2)) os.chmod(fname, stat.S_IRUSR|stat.S_IWUSR) def load_config_from_json(self): """load config from existing json connector files.""" c = self.config # load from engine config with open(os.path.join(self.profile_dir.security_dir, 'ipcontroller-engine.json')) as f: cfg = json.loads(f.read()) key = c.Session.key = asbytes(cfg['exec_key']) xport,addr = cfg['url'].split('://') c.HubFactory.engine_transport = xport ip,ports = addr.split(':') c.HubFactory.engine_ip = ip c.HubFactory.regport = int(ports) self.location = cfg['location'] # load client config with open(os.path.join(self.profile_dir.security_dir, 'ipcontroller-client.json')) as f: cfg = json.loads(f.read()) assert key == cfg['exec_key'], "exec_key mismatch between engine and client keys" xport,addr = cfg['url'].split('://') c.HubFactory.client_transport = xport ip,ports = addr.split(':') c.HubFactory.client_ip = ip self.ssh_server = cfg['ssh'] assert int(ports) == c.HubFactory.regport, "regport mismatch" def init_hub(self): c = self.config self.do_import_statements() reusing = self.reuse_files if reusing: try: self.load_config_from_json() except (AssertionError,IOError): reusing=False # check again, because reusing may have failed: if reusing: pass elif self.secure: key = str(uuid.uuid4()) # keyfile = os.path.join(self.profile_dir.security_dir, self.exec_key) # with open(keyfile, 'w') as f: # f.write(key) # os.chmod(keyfile, stat.S_IRUSR|stat.S_IWUSR) c.Session.key = asbytes(key) else: key = c.Session.key = b'' try: self.factory = HubFactory(config=c, log=self.log) # self.start_logging() self.factory.init_hub() except: self.log.error("Couldn't construct the Controller", exc_info=True) self.exit(1) if not reusing: # save to new json config files f = self.factory cdict = {'exec_key' : key, 'ssh' : self.ssh_server, 'url' : "%s://%s:%s"%(f.client_transport, f.client_ip, f.regport), 'location' : self.location } self.save_connection_dict('ipcontroller-client.json', cdict) edict = cdict edict['url']="%s://%s:%s"%((f.client_transport, f.client_ip, f.regport)) self.save_connection_dict('ipcontroller-engine.json', edict) # def init_schedulers(self): children = self.children mq = import_item(str(self.mq_class)) hub = self.factory # maybe_inproc = 'inproc://monitor' if self.use_threads else self.monitor_url # IOPub relay (in a Process) q = mq(zmq.PUB, zmq.SUB, zmq.PUB, b'N/A',b'iopub') q.bind_in(hub.client_info['iopub']) q.bind_out(hub.engine_info['iopub']) q.setsockopt_out(zmq.SUBSCRIBE, b'') q.connect_mon(hub.monitor_url) q.daemon=True children.append(q) # Multiplexer Queue (in a Process) q = mq(zmq.XREP, zmq.XREP, zmq.PUB, b'in', b'out') q.bind_in(hub.client_info['mux']) q.setsockopt_in(zmq.IDENTITY, b'mux') q.bind_out(hub.engine_info['mux']) q.connect_mon(hub.monitor_url) q.daemon=True children.append(q) # Control Queue (in a Process) q = mq(zmq.XREP, zmq.XREP, zmq.PUB, b'incontrol', b'outcontrol') q.bind_in(hub.client_info['control']) q.setsockopt_in(zmq.IDENTITY, b'control') q.bind_out(hub.engine_info['control']) q.connect_mon(hub.monitor_url) q.daemon=True children.append(q) try: scheme = self.config.TaskScheduler.scheme_name except AttributeError: scheme = TaskScheduler.scheme_name.get_default_value() # Task Queue (in a Process) if scheme == 'pure': self.log.warn("task::using pure XREQ Task scheduler") q = mq(zmq.XREP, zmq.XREQ, zmq.PUB, b'intask', b'outtask') # q.setsockopt_out(zmq.HWM, hub.hwm) q.bind_in(hub.client_info['task'][1]) q.setsockopt_in(zmq.IDENTITY, b'task') q.bind_out(hub.engine_info['task']) q.connect_mon(hub.monitor_url) q.daemon=True children.append(q) elif scheme == 'none': self.log.warn("task::using no Task scheduler") else: self.log.info("task::using Python %s Task scheduler"%scheme) sargs = (hub.client_info['task'][1], hub.engine_info['task'], hub.monitor_url, hub.client_info['notification']) kwargs = dict(logname='scheduler', loglevel=self.log_level, log_url = self.log_url, config=dict(self.config)) if 'Process' in self.mq_class: # run the Python scheduler in a Process q = Process(target=launch_scheduler, args=sargs, kwargs=kwargs) q.daemon=True children.append(q) else: # single-threaded Controller kwargs['in_thread'] = True launch_scheduler(*sargs, **kwargs) def save_urls(self): """save the registration urls to files.""" c = self.config sec_dir = self.profile_dir.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 do_import_statements(self): statements = self.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 forward_logging(self): if self.log_url: self.log.info("Forwarding logging to %s"%self.log_url) context = zmq.Context.instance() lsock = context.socket(zmq.PUB) lsock.connect(self.log_url) handler = PUBHandler(lsock) self.log.removeHandler(self._log_handler) handler.root_topic = 'controller' handler.setLevel(self.log_level) self.log.addHandler(handler) self._log_handler = handler # # def initialize(self, argv=None): super(IPControllerApp, self).initialize(argv) self.forward_logging() self.init_hub() self.init_schedulers() def start(self): # Start the subprocesses: self.factory.start() child_procs = [] for child in self.children: child.start() if isinstance(child, ProcessMonitoredQueue): child_procs.append(child.launcher) elif isinstance(child, Process): child_procs.append(child) if child_procs: signal_children(child_procs) 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""" if sys.platform == 'win32': # make sure we don't get called from a multiprocessing subprocess # this can result in infinite Controllers being started on Windows # which doesn't have a proper fork, so multiprocessing is wonky # this only comes up when IPython has been installed using vanilla # setuptools, and *not* distribute. import multiprocessing p = multiprocessing.current_process() # the main process has name 'MainProcess' # subprocesses will have names like 'Process-1' if p.name != 'MainProcess': # we are a subprocess, don't start another Controller! return app = IPControllerApp.instance() app.initialize() app.start() if __name__ == '__main__': launch_new_instance()