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#!/usr/bin/env python
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"""The IPython Controller with 0MQ
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This is the master object that handles connections from engines, clients, and
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"""
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#-----------------------------------------------------------------------------
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# Copyright (C) 2010 The IPython Development Team
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#
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# Distributed under the terms of the BSD License. The full license is in
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# the file COPYING, distributed as part of this software.
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#-----------------------------------------------------------------------------
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#-----------------------------------------------------------------------------
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# Imports
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#-----------------------------------------------------------------------------
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from __future__ import print_function
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from datetime import datetime
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import logging
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import zmq
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from zmq.eventloop import zmqstream, ioloop
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import uuid
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# internal:
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from IPython.zmq.log import logger # a Logger object
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from IPython.zmq.entry_point import bind_port
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from streamsession import Message, wrap_exception
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from entry_point import (make_base_argument_parser, select_random_ports, split_ports,
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connect_logger, parse_url)
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# from messages import json # use the same import switches
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#-----------------------------------------------------------------------------
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# Code
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#-----------------------------------------------------------------------------
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class ReverseDict(dict):
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"""simple double-keyed subset of dict methods."""
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def __init__(self, *args, **kwargs):
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dict.__init__(self, *args, **kwargs)
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self.reverse = dict()
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for key, value in self.iteritems():
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self.reverse[value] = key
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def __getitem__(self, key):
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try:
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return dict.__getitem__(self, key)
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except KeyError:
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return self.reverse[key]
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def __setitem__(self, key, value):
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if key in self.reverse:
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raise KeyError("Can't have key %r on both sides!"%key)
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dict.__setitem__(self, key, value)
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self.reverse[value] = key
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def pop(self, key):
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value = dict.pop(self, key)
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self.d1.pop(value)
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return value
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class EngineConnector(object):
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"""A simple object for accessing the various zmq connections of an object.
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Attributes are:
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id (int): engine ID
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uuid (str): uuid (unused?)
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queue (str): identity of queue's XREQ socket
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registration (str): identity of registration XREQ socket
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heartbeat (str): identity of heartbeat XREQ socket
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"""
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id=0
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queue=None
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control=None
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registration=None
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heartbeat=None
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pending=None
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def __init__(self, id, queue, registration, control, heartbeat=None):
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logger.info("engine::Engine Connected: %i"%id)
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self.id = id
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self.queue = queue
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self.registration = registration
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self.control = control
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self.heartbeat = heartbeat
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class Controller(object):
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"""The IPython Controller with 0MQ connections
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Parameters
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==========
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loop: zmq IOLoop instance
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session: StreamSession object
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<removed> context: zmq context for creating new connections (?)
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registrar: ZMQStream for engine registration requests (XREP)
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clientele: ZMQStream for client connections (XREP)
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not used for jobs, only query/control commands
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queue: ZMQStream for monitoring the command queue (SUB)
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heartbeat: HeartMonitor object checking the pulse of the engines
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db_stream: connection to db for out of memory logging of commands
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NotImplemented
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queue_addr: zmq connection address of the XREP socket for the queue
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hb_addr: zmq connection address of the PUB socket for heartbeats
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task_addr: zmq connection address of the XREQ socket for task queue
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"""
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# internal data structures:
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ids=None # engine IDs
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keytable=None
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engines=None
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clients=None
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hearts=None
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pending=None
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results=None
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tasks=None
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completed=None
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mia=None
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incoming_registrations=None
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registration_timeout=None
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#objects from constructor:
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loop=None
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registrar=None
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clientelle=None
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queue=None
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heartbeat=None
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notifier=None
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db=None
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client_addr=None
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engine_addrs=None
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def __init__(self, loop, session, queue, registrar, heartbeat, clientele, notifier, db, engine_addrs, client_addrs):
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"""
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# universal:
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loop: IOLoop for creating future connections
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session: streamsession for sending serialized data
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# engine:
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queue: ZMQStream for monitoring queue messages
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registrar: ZMQStream for engine registration
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heartbeat: HeartMonitor object for tracking engines
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# client:
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clientele: ZMQStream for client connections
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# extra:
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db: ZMQStream for db connection (NotImplemented)
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engine_addrs: zmq address/protocol dict for engine connections
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client_addrs: zmq address/protocol dict for client connections
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"""
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self.ids = set()
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self.keytable={}
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self.incoming_registrations={}
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self.engines = {}
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self.by_ident = {}
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self.clients = {}
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self.hearts = {}
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self.mia = set()
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# self.sockets = {}
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self.loop = loop
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self.session = session
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self.registrar = registrar
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self.clientele = clientele
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self.queue = queue
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self.heartbeat = heartbeat
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self.notifier = notifier
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self.db = db
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self.client_addrs = client_addrs
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assert isinstance(client_addrs['queue'], str)
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# self.hb_addrs = hb_addrs
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self.engine_addrs = engine_addrs
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assert isinstance(engine_addrs['queue'], str)
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assert len(engine_addrs['heartbeat']) == 2
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# register our callbacks
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self.registrar.on_recv(self.dispatch_register_request)
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self.clientele.on_recv(self.dispatch_client_msg)
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self.queue.on_recv(self.dispatch_queue_traffic)
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if heartbeat is not None:
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heartbeat.add_heart_failure_handler(self.handle_heart_failure)
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heartbeat.add_new_heart_handler(self.handle_new_heart)
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if self.db is not None:
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self.db.on_recv(self.dispatch_db)
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self.client_handlers = {'queue_request': self.queue_status,
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'result_request': self.get_results,
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'purge_request': self.purge_results,
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'resubmit_request': self.resubmit_task,
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}
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self.registrar_handlers = {'registration_request' : self.register_engine,
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'unregistration_request' : self.unregister_engine,
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'connection_request': self.connection_request,
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}
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#
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# this is the stuff that will move to DB:
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self.results = {} # completed results
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self.pending = {} # pending messages, keyed by msg_id
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self.queues = {} # pending msg_ids keyed by engine_id
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self.tasks = {} # pending msg_ids submitted as tasks, keyed by client_id
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self.completed = {} # completed msg_ids keyed by engine_id
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self.registration_timeout = max(5000, 2*self.heartbeat.period)
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logger.info("controller::created controller")
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def _new_id(self):
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"""gemerate a new ID"""
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newid = 0
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incoming = [id[0] for id in self.incoming_registrations.itervalues()]
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# print newid, self.ids, self.incoming_registrations
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while newid in self.ids or newid in incoming:
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newid += 1
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return newid
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#-----------------------------------------------------------------------------
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# message validation
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#-----------------------------------------------------------------------------
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def _validate_targets(self, targets):
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"""turn any valid targets argument into a list of integer ids"""
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if targets is None:
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# default to all
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targets = self.ids
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if isinstance(targets, (int,str,unicode)):
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# only one target specified
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targets = [targets]
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_targets = []
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for t in targets:
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# map raw identities to ids
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if isinstance(t, (str,unicode)):
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t = self.by_ident.get(t, t)
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_targets.append(t)
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targets = _targets
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bad_targets = [ t for t in targets if t not in self.ids ]
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if bad_targets:
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raise IndexError("No Such Engine: %r"%bad_targets)
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if not targets:
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raise IndexError("No Engines Registered")
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return targets
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def _validate_client_msg(self, msg):
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"""validates and unpacks headers of a message. Returns False if invalid,
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(ident, header, parent, content)"""
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client_id = msg[0]
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try:
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msg = self.session.unpack_message(msg[1:], content=True)
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except:
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logger.error("client::Invalid Message %s"%msg)
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return False
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msg_type = msg.get('msg_type', None)
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if msg_type is None:
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return False
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header = msg.get('header')
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# session doesn't handle split content for now:
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return client_id, msg
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#-----------------------------------------------------------------------------
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# dispatch methods (1 per stream)
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#-----------------------------------------------------------------------------
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def dispatch_register_request(self, msg):
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""""""
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logger.debug("registration::dispatch_register_request(%s)"%msg)
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idents,msg = self.session.feed_identities(msg)
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print (idents,msg, len(msg))
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try:
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msg = self.session.unpack_message(msg,content=True)
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except Exception, e:
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logger.error("registration::got bad registration message: %s"%msg)
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raise e
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return
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msg_type = msg['msg_type']
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content = msg['content']
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handler = self.registrar_handlers.get(msg_type, None)
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if handler is None:
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logger.error("registration::got bad registration message: %s"%msg)
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else:
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handler(idents, msg)
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def dispatch_queue_traffic(self, msg):
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"""all ME and Task queue messages come through here"""
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logger.debug("queue traffic: %s"%msg[:2])
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switch = msg[0]
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idents, msg = self.session.feed_identities(msg[1:])
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if switch == 'in':
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self.save_queue_request(idents, msg)
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elif switch == 'out':
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self.save_queue_result(idents, msg)
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elif switch == 'intask':
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self.save_task_request(idents, msg)
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elif switch == 'outtask':
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self.save_task_result(idents, msg)
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elif switch == 'tracktask':
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self.save_task_destination(idents, msg)
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elif switch in ('incontrol', 'outcontrol'):
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pass
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else:
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logger.error("Invalid message topic: %s"%switch)
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def dispatch_client_msg(self, msg):
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"""Route messages from clients"""
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idents, msg = self.session.feed_identities(msg)
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client_id = idents[0]
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try:
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msg = self.session.unpack_message(msg, content=True)
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except:
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content = wrap_exception()
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logger.error("Bad Client Message: %s"%msg)
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self.session.send(self.clientele, "controller_error", ident=client_id,
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content=content)
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return
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# print client_id, header, parent, content
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#switch on message type:
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msg_type = msg['msg_type']
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logger.info("client:: client %s requested %s"%(client_id, msg_type))
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handler = self.client_handlers.get(msg_type, None)
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try:
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assert handler is not None, "Bad Message Type: %s"%msg_type
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except:
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content = wrap_exception()
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logger.error("Bad Message Type: %s"%msg_type)
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self.session.send(self.clientele, "controller_error", ident=client_id,
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content=content)
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return
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else:
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handler(client_id, msg)
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def dispatch_db(self, msg):
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""""""
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raise NotImplementedError
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#---------------------------------------------------------------------------
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# handler methods (1 per event)
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#---------------------------------------------------------------------------
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#----------------------- Heartbeat --------------------------------------
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def handle_new_heart(self, heart):
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"""handler to attach to heartbeater.
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Called when a new heart starts to beat.
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Triggers completion of registration."""
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logger.debug("heartbeat::handle_new_heart(%r)"%heart)
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if heart not in self.incoming_registrations:
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logger.info("heartbeat::ignoring new heart: %r"%heart)
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else:
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self.finish_registration(heart)
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def handle_heart_failure(self, heart):
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"""handler to attach to heartbeater.
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called when a previously registered heart fails to respond to beat request.
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triggers unregistration"""
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logger.debug("heartbeat::handle_heart_failure(%r)"%heart)
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eid = self.hearts.get(heart, None)
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queue = self.engines[eid].queue
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if eid is None:
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logger.info("heartbeat::ignoring heart failure %r"%heart)
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else:
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self.unregister_engine(heart, dict(content=dict(id=eid, queue=queue)))
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#----------------------- MUX Queue Traffic ------------------------------
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def save_queue_request(self, idents, msg):
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queue_id, client_id = idents[:2]
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try:
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msg = self.session.unpack_message(msg, content=False)
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except:
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logger.error("queue::client %r sent invalid message to %r: %s"%(client_id, queue_id, msg))
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return
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eid = self.by_ident.get(queue_id, None)
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if eid is None:
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logger.error("queue::target %r not registered"%queue_id)
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logger.debug("queue:: valid are: %s"%(self.by_ident.keys()))
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return
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header = msg['header']
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msg_id = header['msg_id']
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info = dict(submit=datetime.now(),
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received=None,
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engine=(eid, queue_id))
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self.pending[msg_id] = ( msg, info )
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self.queues[eid][0].append(msg_id)
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def save_queue_result(self, idents, msg):
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client_id, queue_id = idents[:2]
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try:
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msg = self.session.unpack_message(msg, content=False)
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except:
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logger.error("queue::engine %r sent invalid message to %r: %s"%(
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queue_id,client_id, msg))
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return
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eid = self.by_ident.get(queue_id, None)
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if eid is None:
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logger.error("queue::unknown engine %r is sending a reply: "%queue_id)
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logger.debug("queue:: %s"%msg[2:])
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return
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parent = msg['parent_header']
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if not parent:
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return
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msg_id = parent['msg_id']
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self.results[msg_id] = msg
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if msg_id in self.pending:
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self.pending.pop(msg_id)
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self.queues[eid][0].remove(msg_id)
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self.completed[eid].append(msg_id)
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else:
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logger.debug("queue:: unknown msg finished %s"%msg_id)
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#--------------------- Task Queue Traffic ------------------------------
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def save_task_request(self, idents, msg):
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client_id = idents[0]
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try:
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msg = self.session.unpack_message(msg, content=False)
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except:
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logger.error("task::client %r sent invalid task message: %s"%(
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client_id, msg))
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return
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header = msg['header']
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msg_id = header['msg_id']
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self.mia.add(msg_id)
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self.pending[msg_id] = msg
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if not self.tasks.has_key(client_id):
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self.tasks[client_id] = []
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self.tasks[client_id].append(msg_id)
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def save_task_result(self, idents, msg):
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client_id = idents[0]
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try:
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|
|
msg = self.session.unpack_message(msg, content=False)
|
|
|
except:
|
|
|
logger.error("task::invalid task result message send to %r: %s"%(
|
|
|
client_id, msg))
|
|
|
return
|
|
|
|
|
|
parent = msg['parent_header']
|
|
|
if not parent:
|
|
|
# print msg
|
|
|
# logger.warn("")
|
|
|
return
|
|
|
msg_id = parent['msg_id']
|
|
|
self.results[msg_id] = msg
|
|
|
if msg_id in self.pending:
|
|
|
self.pending.pop(msg_id)
|
|
|
if msg_id in self.mia:
|
|
|
self.mia.remove(msg_id)
|
|
|
else:
|
|
|
logger.debug("task::unknown task %s finished"%msg_id)
|
|
|
|
|
|
def save_task_destination(self, idents, msg):
|
|
|
try:
|
|
|
msg = self.session.unpack_message(msg, content=True)
|
|
|
except:
|
|
|
logger.error("task::invalid task tracking message")
|
|
|
return
|
|
|
content = msg['content']
|
|
|
print (content)
|
|
|
msg_id = content['msg_id']
|
|
|
engine_uuid = content['engine_id']
|
|
|
for eid,queue_id in self.keytable.iteritems():
|
|
|
if queue_id == engine_uuid:
|
|
|
break
|
|
|
|
|
|
logger.info("task::task %s arrived on %s"%(msg_id, eid))
|
|
|
if msg_id in self.mia:
|
|
|
self.mia.remove(msg_id)
|
|
|
else:
|
|
|
logger.debug("task::task %s not listed as MIA?!"%(msg_id))
|
|
|
self.tasks[engine_uuid].append(msg_id)
|
|
|
|
|
|
def mia_task_request(self, idents, msg):
|
|
|
client_id = idents[0]
|
|
|
content = dict(mia=self.mia,status='ok')
|
|
|
self.session.send('mia_reply', content=content, idents=client_id)
|
|
|
|
|
|
|
|
|
|
|
|
#-------------------- Registration -----------------------------
|
|
|
|
|
|
def connection_request(self, client_id, msg):
|
|
|
"""reply with connection addresses for clients"""
|
|
|
logger.info("client::client %s connected"%client_id)
|
|
|
content = dict(status='ok')
|
|
|
content.update(self.client_addrs)
|
|
|
jsonable = {}
|
|
|
for k,v in self.keytable.iteritems():
|
|
|
jsonable[str(k)] = v
|
|
|
content['engines'] = jsonable
|
|
|
self.session.send(self.registrar, 'connection_reply', content, parent=msg, ident=client_id)
|
|
|
|
|
|
def register_engine(self, reg, msg):
|
|
|
"""register an engine"""
|
|
|
content = msg['content']
|
|
|
try:
|
|
|
queue = content['queue']
|
|
|
except KeyError:
|
|
|
logger.error("registration::queue not specified")
|
|
|
return
|
|
|
heart = content.get('heartbeat', None)
|
|
|
"""register a new engine, and create the socket(s) necessary"""
|
|
|
eid = self._new_id()
|
|
|
# print (eid, queue, reg, heart)
|
|
|
|
|
|
logger.debug("registration::register_engine(%i, %r, %r, %r)"%(eid, queue, reg, heart))
|
|
|
|
|
|
content = dict(id=eid,status='ok')
|
|
|
content.update(self.engine_addrs)
|
|
|
# check if requesting available IDs:
|
|
|
if queue in self.by_ident:
|
|
|
content = {'status': 'error', 'reason': "queue_id %r in use"%queue}
|
|
|
elif heart in self.hearts: # need to check unique hearts?
|
|
|
content = {'status': 'error', 'reason': "heart_id %r in use"%heart}
|
|
|
else:
|
|
|
for h, pack in self.incoming_registrations.iteritems():
|
|
|
if heart == h:
|
|
|
content = {'status': 'error', 'reason': "heart_id %r in use"%heart}
|
|
|
break
|
|
|
elif queue == pack[1]:
|
|
|
content = {'status': 'error', 'reason': "queue_id %r in use"%queue}
|
|
|
break
|
|
|
|
|
|
msg = self.session.send(self.registrar, "registration_reply",
|
|
|
content=content,
|
|
|
ident=reg)
|
|
|
|
|
|
if content['status'] == 'ok':
|
|
|
if heart in self.heartbeat.hearts:
|
|
|
# already beating
|
|
|
self.incoming_registrations[heart] = (eid,queue,reg,None)
|
|
|
self.finish_registration(heart)
|
|
|
else:
|
|
|
purge = lambda : self._purge_stalled_registration(heart)
|
|
|
dc = ioloop.DelayedCallback(purge, self.registration_timeout, self.loop)
|
|
|
dc.start()
|
|
|
self.incoming_registrations[heart] = (eid,queue,reg,dc)
|
|
|
else:
|
|
|
logger.error("registration::registration %i failed: %s"%(eid, content['reason']))
|
|
|
return eid
|
|
|
|
|
|
def unregister_engine(self, ident, msg):
|
|
|
try:
|
|
|
eid = msg['content']['id']
|
|
|
except:
|
|
|
logger.error("registration::bad engine id for unregistration: %s"%ident)
|
|
|
return
|
|
|
logger.info("registration::unregister_engine(%s)"%eid)
|
|
|
content=dict(id=eid, queue=self.engines[eid].queue)
|
|
|
self.ids.remove(eid)
|
|
|
self.keytable.pop(eid)
|
|
|
ec = self.engines.pop(eid)
|
|
|
self.hearts.pop(ec.heartbeat)
|
|
|
self.by_ident.pop(ec.queue)
|
|
|
self.completed.pop(eid)
|
|
|
for msg_id in self.queues.pop(eid)[0]:
|
|
|
msg = self.pending.pop(msg_id)
|
|
|
############## TODO: HANDLE IT ################
|
|
|
|
|
|
if self.notifier:
|
|
|
self.session.send(self.notifier, "unregistration_notification", content=content)
|
|
|
|
|
|
def finish_registration(self, heart):
|
|
|
try:
|
|
|
(eid,queue,reg,purge) = self.incoming_registrations.pop(heart)
|
|
|
except KeyError:
|
|
|
logger.error("registration::tried to finish nonexistant registration")
|
|
|
return
|
|
|
logger.info("registration::finished registering engine %i:%r"%(eid,queue))
|
|
|
if purge is not None:
|
|
|
purge.stop()
|
|
|
control = queue
|
|
|
self.ids.add(eid)
|
|
|
self.keytable[eid] = queue
|
|
|
self.engines[eid] = EngineConnector(eid, queue, reg, control, heart)
|
|
|
self.by_ident[queue] = eid
|
|
|
self.queues[eid] = ([],[])
|
|
|
self.completed[eid] = list()
|
|
|
self.hearts[heart] = eid
|
|
|
content = dict(id=eid, queue=self.engines[eid].queue)
|
|
|
if self.notifier:
|
|
|
self.session.send(self.notifier, "registration_notification", content=content)
|
|
|
|
|
|
def _purge_stalled_registration(self, heart):
|
|
|
if heart in self.incoming_registrations:
|
|
|
eid = self.incoming_registrations.pop(heart)[0]
|
|
|
logger.info("registration::purging stalled registration: %i"%eid)
|
|
|
else:
|
|
|
pass
|
|
|
|
|
|
#------------------- Client Requests -------------------------------
|
|
|
|
|
|
def check_load(self, client_id, msg):
|
|
|
content = msg['content']
|
|
|
try:
|
|
|
targets = content['targets']
|
|
|
targets = self._validate_targets(targets)
|
|
|
except:
|
|
|
content = wrap_exception()
|
|
|
self.session.send(self.clientele, "controller_error",
|
|
|
content=content, ident=client_id)
|
|
|
return
|
|
|
|
|
|
content = dict(status='ok')
|
|
|
# loads = {}
|
|
|
for t in targets:
|
|
|
content[str(t)] = len(self.queues[t])
|
|
|
self.session.send(self.clientele, "load_reply", content=content, ident=client_id)
|
|
|
|
|
|
|
|
|
def queue_status(self, client_id, msg):
|
|
|
"""handle queue_status request"""
|
|
|
content = msg['content']
|
|
|
targets = content['targets']
|
|
|
try:
|
|
|
targets = self._validate_targets(targets)
|
|
|
except:
|
|
|
content = wrap_exception()
|
|
|
self.session.send(self.clientele, "controller_error",
|
|
|
content=content, ident=client_id)
|
|
|
return
|
|
|
verbose = msg.get('verbose', False)
|
|
|
content = dict()
|
|
|
for t in targets:
|
|
|
queue = self.queues[t]
|
|
|
completed = self.completed[t]
|
|
|
if not verbose:
|
|
|
queue = len(queue)
|
|
|
completed = len(completed)
|
|
|
content[str(t)] = {'queue': queue, 'completed': completed }
|
|
|
# pending
|
|
|
self.session.send(self.clientele, "queue_reply", content=content, ident=client_id)
|
|
|
|
|
|
def purge_results(self, client_id, msg):
|
|
|
content = msg['content']
|
|
|
msg_ids = content.get('msg_ids', [])
|
|
|
reply = dict(status='ok')
|
|
|
if msg_ids == 'all':
|
|
|
self.results = {}
|
|
|
else:
|
|
|
for msg_id in msg_ids:
|
|
|
if msg_id in self.results:
|
|
|
self.results.pop(msg_id)
|
|
|
else:
|
|
|
if msg_id in self.pending:
|
|
|
reply = dict(status='error', reason="msg pending: %r"%msg_id)
|
|
|
else:
|
|
|
reply = dict(status='error', reason="No such msg: %r"%msg_id)
|
|
|
break
|
|
|
eids = content.get('engine_ids', [])
|
|
|
for eid in eids:
|
|
|
if eid not in self.engines:
|
|
|
reply = dict(status='error', reason="No such engine: %i"%eid)
|
|
|
break
|
|
|
msg_ids = self.completed.pop(eid)
|
|
|
for msg_id in msg_ids:
|
|
|
self.results.pop(msg_id)
|
|
|
|
|
|
self.sesison.send(self.clientele, 'purge_reply', content=reply, ident=client_id)
|
|
|
|
|
|
def resubmit_task(self, client_id, msg, buffers):
|
|
|
content = msg['content']
|
|
|
header = msg['header']
|
|
|
|
|
|
|
|
|
msg_ids = content.get('msg_ids', [])
|
|
|
reply = dict(status='ok')
|
|
|
if msg_ids == 'all':
|
|
|
self.results = {}
|
|
|
else:
|
|
|
for msg_id in msg_ids:
|
|
|
if msg_id in self.results:
|
|
|
self.results.pop(msg_id)
|
|
|
else:
|
|
|
if msg_id in self.pending:
|
|
|
reply = dict(status='error', reason="msg pending: %r"%msg_id)
|
|
|
else:
|
|
|
reply = dict(status='error', reason="No such msg: %r"%msg_id)
|
|
|
break
|
|
|
eids = content.get('engine_ids', [])
|
|
|
for eid in eids:
|
|
|
if eid not in self.engines:
|
|
|
reply = dict(status='error', reason="No such engine: %i"%eid)
|
|
|
break
|
|
|
msg_ids = self.completed.pop(eid)
|
|
|
for msg_id in msg_ids:
|
|
|
self.results.pop(msg_id)
|
|
|
|
|
|
self.sesison.send(self.clientele, 'purge_reply', content=reply, ident=client_id)
|
|
|
|
|
|
def get_results(self, client_id, msg):
|
|
|
"""get the result of 1 or more messages"""
|
|
|
content = msg['content']
|
|
|
msg_ids = set(content['msg_ids'])
|
|
|
statusonly = content.get('status_only', False)
|
|
|
pending = []
|
|
|
completed = []
|
|
|
content = dict(status='ok')
|
|
|
content['pending'] = pending
|
|
|
content['completed'] = completed
|
|
|
for msg_id in msg_ids:
|
|
|
if msg_id in self.pending:
|
|
|
pending.append(msg_id)
|
|
|
elif msg_id in self.results:
|
|
|
completed.append(msg_id)
|
|
|
if not statusonly:
|
|
|
content[msg_id] = self.results[msg_id]['content']
|
|
|
else:
|
|
|
content = dict(status='error')
|
|
|
content['reason'] = 'no such message: '+msg_id
|
|
|
break
|
|
|
self.session.send(self.clientele, "result_reply", content=content,
|
|
|
parent=msg, ident=client_id)
|
|
|
|
|
|
|
|
|
|
|
|
############ OLD METHODS for Python Relay Controller ###################
|
|
|
def _validate_engine_msg(self, msg):
|
|
|
"""validates and unpacks headers of a message. Returns False if invalid,
|
|
|
(ident, message)"""
|
|
|
ident = msg[0]
|
|
|
try:
|
|
|
msg = self.session.unpack_message(msg[1:], content=False)
|
|
|
except:
|
|
|
logger.error("engine.%s::Invalid Message %s"%(ident, msg))
|
|
|
return False
|
|
|
|
|
|
try:
|
|
|
eid = msg.header.username
|
|
|
assert self.engines.has_key(eid)
|
|
|
except:
|
|
|
logger.error("engine::Invalid Engine ID %s"%(ident))
|
|
|
return False
|
|
|
|
|
|
return eid, msg
|
|
|
|
|
|
|
|
|
#--------------------
|
|
|
# Entry Point
|
|
|
#--------------------
|
|
|
def make_argument_parser():
|
|
|
"""Make an argument parser"""
|
|
|
parser = make_base_argument_parser()
|
|
|
|
|
|
parser.add_argument('--client', type=int, metavar='PORT', default=0,
|
|
|
help='set the XREP port for clients [default: random]')
|
|
|
parser.add_argument('--notice', type=int, metavar='PORT', default=0,
|
|
|
help='set the PUB socket for registration notification [default: random]')
|
|
|
parser.add_argument('--hb', type=str, metavar='PORTS',
|
|
|
help='set the 2 ports for heartbeats [default: random]')
|
|
|
parser.add_argument('--ping', type=int, default=3000,
|
|
|
help='set the heartbeat period in ms [default: 3000]')
|
|
|
parser.add_argument('--monitor', type=int, metavar='PORT', default=0,
|
|
|
help='set the SUB port for queue monitoring [default: random]')
|
|
|
parser.add_argument('--mux', type=str, metavar='PORTS',
|
|
|
help='set the XREP ports for the MUX queue [default: random]')
|
|
|
parser.add_argument('--task', type=str, metavar='PORTS',
|
|
|
help='set the XREP/XREQ ports for the task queue [default: random]')
|
|
|
parser.add_argument('--control', type=str, metavar='PORTS',
|
|
|
help='set the XREP ports for the control queue [default: random]')
|
|
|
parser.add_argument('--scheduler', type=str, default='pure',
|
|
|
choices = ['pure', 'lru', 'plainrandom', 'weighted', 'twobin','leastload'],
|
|
|
help='select the task scheduler [default: pure ZMQ]')
|
|
|
|
|
|
return parser
|
|
|
|
|
|
def main():
|
|
|
import time
|
|
|
from multiprocessing import Process
|
|
|
|
|
|
from zmq.eventloop.zmqstream import ZMQStream
|
|
|
from zmq.devices import ProcessMonitoredQueue
|
|
|
from zmq.log import handlers
|
|
|
|
|
|
import streamsession as session
|
|
|
import heartmonitor
|
|
|
from scheduler import launch_scheduler
|
|
|
|
|
|
parser = make_argument_parser()
|
|
|
|
|
|
args = parser.parse_args()
|
|
|
parse_url(args)
|
|
|
|
|
|
iface="%s://%s"%(args.transport,args.ip)+':%i'
|
|
|
|
|
|
random_ports = 0
|
|
|
if args.hb:
|
|
|
hb = split_ports(args.hb, 2)
|
|
|
else:
|
|
|
hb = select_random_ports(2)
|
|
|
if args.mux:
|
|
|
mux = split_ports(args.mux, 2)
|
|
|
else:
|
|
|
mux = None
|
|
|
random_ports += 2
|
|
|
if args.task:
|
|
|
task = split_ports(args.task, 2)
|
|
|
else:
|
|
|
task = None
|
|
|
random_ports += 2
|
|
|
if args.control:
|
|
|
control = split_ports(args.control, 2)
|
|
|
else:
|
|
|
control = None
|
|
|
random_ports += 2
|
|
|
|
|
|
ctx = zmq.Context()
|
|
|
loop = ioloop.IOLoop.instance()
|
|
|
|
|
|
# setup logging
|
|
|
connect_logger(ctx, iface%args.logport, root="controller", loglevel=args.loglevel)
|
|
|
|
|
|
# Registrar socket
|
|
|
reg = ZMQStream(ctx.socket(zmq.XREP), loop)
|
|
|
regport = bind_port(reg, args.ip, args.regport)
|
|
|
|
|
|
### Engine connections ###
|
|
|
|
|
|
# heartbeat
|
|
|
hpub = ctx.socket(zmq.PUB)
|
|
|
bind_port(hpub, args.ip, hb[0])
|
|
|
hrep = ctx.socket(zmq.XREP)
|
|
|
bind_port(hrep, args.ip, hb[1])
|
|
|
|
|
|
hmon = heartmonitor.HeartMonitor(loop, ZMQStream(hpub,loop), ZMQStream(hrep,loop),args.ping)
|
|
|
hmon.start()
|
|
|
|
|
|
### Client connections ###
|
|
|
# Clientele socket
|
|
|
c = ZMQStream(ctx.socket(zmq.XREP), loop)
|
|
|
cport = bind_port(c, args.ip, args.client)
|
|
|
# Notifier socket
|
|
|
n = ZMQStream(ctx.socket(zmq.PUB), loop)
|
|
|
nport = bind_port(n, args.ip, args.notice)
|
|
|
|
|
|
thesession = session.StreamSession(username=args.ident or "controller")
|
|
|
|
|
|
### build and launch the queues ###
|
|
|
|
|
|
# monitor socket
|
|
|
sub = ctx.socket(zmq.SUB)
|
|
|
sub.setsockopt(zmq.SUBSCRIBE, "")
|
|
|
monport = bind_port(sub, args.ip, args.monitor)
|
|
|
sub = ZMQStream(sub, loop)
|
|
|
|
|
|
ports = select_random_ports(random_ports)
|
|
|
# Multiplexer Queue (in a Process)
|
|
|
if not mux:
|
|
|
mux = (ports.pop(),ports.pop())
|
|
|
q = ProcessMonitoredQueue(zmq.XREP, zmq.XREP, zmq.PUB, 'in', 'out')
|
|
|
q.bind_in(iface%mux[0])
|
|
|
q.bind_out(iface%mux[1])
|
|
|
q.connect_mon(iface%monport)
|
|
|
q.daemon=True
|
|
|
q.start()
|
|
|
|
|
|
# Control Queue (in a Process)
|
|
|
if not control:
|
|
|
control = (ports.pop(),ports.pop())
|
|
|
q = ProcessMonitoredQueue(zmq.XREP, zmq.XREP, zmq.PUB, 'incontrol', 'outcontrol')
|
|
|
q.bind_in(iface%control[0])
|
|
|
q.bind_out(iface%control[1])
|
|
|
q.connect_mon(iface%monport)
|
|
|
q.daemon=True
|
|
|
q.start()
|
|
|
|
|
|
# Task Queue (in a Process)
|
|
|
if not task:
|
|
|
task = (ports.pop(),ports.pop())
|
|
|
if args.scheduler == 'pure':
|
|
|
q = ProcessMonitoredQueue(zmq.XREP, zmq.XREQ, zmq.PUB, 'intask', 'outtask')
|
|
|
q.bind_in(iface%task[0])
|
|
|
q.bind_out(iface%task[1])
|
|
|
q.connect_mon(iface%monport)
|
|
|
q.daemon=True
|
|
|
q.start()
|
|
|
else:
|
|
|
sargs = (iface%task[0],iface%task[1],iface%monport,iface%nport,args.scheduler)
|
|
|
print (sargs)
|
|
|
p = Process(target=launch_scheduler, args=sargs)
|
|
|
p.daemon=True
|
|
|
p.start()
|
|
|
|
|
|
time.sleep(.25)
|
|
|
|
|
|
# build connection dicts
|
|
|
engine_addrs = {
|
|
|
'control' : iface%control[1],
|
|
|
'queue': iface%mux[1],
|
|
|
'heartbeat': (iface%hb[0], iface%hb[1]),
|
|
|
'task' : iface%task[1],
|
|
|
'monitor' : iface%monport,
|
|
|
}
|
|
|
|
|
|
client_addrs = {
|
|
|
'control' : iface%control[0],
|
|
|
'query': iface%cport,
|
|
|
'queue': iface%mux[0],
|
|
|
'task' : iface%task[0],
|
|
|
'notification': iface%nport
|
|
|
}
|
|
|
con = Controller(loop, thesession, sub, reg, hmon, c, n, None, engine_addrs, client_addrs)
|
|
|
dc = ioloop.DelayedCallback(lambda : print("Controller started..."), 100, loop)
|
|
|
loop.start()
|
|
|
|
|
|
if __name__ == '__main__':
|
|
|
main()
|
|
|
|
