[mirror_ifupdown2.git] / pkg / scheduler.py

#!/usr/bin/python
#
# Copyright 2013.  Cumulus Networks, Inc.
# Author: Roopa Prabhu, roopa@cumulusnetworks.com
#
# ifaceScheduler --
#    interface scheduler
#

import os
import re
from statemanager import *
from iface import *
from graph import *
from collections import deque
from collections import OrderedDict
import imp
import pprint
import logging
from graph import *
from collections import deque
from threading import *
from ifupdownbase import *

class ifaceScheduler(ifupdownBase):
    """ scheduler to schedule configuration of interfaces.


    supports scheduling of interfaces serially in plain interface list
    or dependency graph format.
    """

    def __init__(self, force=False):
        self.logger = logging.getLogger('ifupdown.' +
                    self.__class__.__name__)
        self.FORCE = force

    def run_iface_subop(self, ifupdownobj, ifaceobj, op, subop, mdict, cenv):
        """ Runs sub operation on an interface """

        self.logger.debug('%s: ' %ifaceobj.get_name() + 'op %s' %op +
                          ' subop = %s' %subop)

        for mname, mdata in mdict.items():
            m = mdata.get('module')
            err = 0
            try:
                if (mdata.get('ftype') == 'pmodule' and
                    hasattr(m, 'run') == True):
                    self.logger.debug('%s: ' %ifaceobj.get_name() +
                                      'running module %s' %mname +
                                      ' op %s' %op + ' subop %s' %subop)
                    if op == 'query':
                        m.run(ifaceobj, subop, query=True,
                              query_ifaceobj=ifupdownobj.create_ifaceobjcurr(
                                                    ifaceobj.get_name()))
                    else:
                        m.run(ifaceobj, subop)
                else:
                    self.logger.debug('%s: ' %ifaceobj.get_name() +
                                      'running script %s' %mname +
                                      ' op %s' %op + ' subop %s' %subop)
                    self.exec_command(m, cmdenv=cenv)
            except Exception, e:
                err = 1
                self.log_error(str(e))
            finally:
                if op != 'query':
                    if err == 1:
                        ifupdownobj.set_iface_state(ifaceobj,
                                ifaceState.from_str(subop),
                                ifaceStatus.ERROR)
                    else:
                        ifupdownobj.set_iface_state(ifaceobj,
                                ifaceState.from_str(subop),
                                ifaceStatus.SUCCESS)

    def run_iface_subops(self, ifupdownobj, ifaceobj, op):
        """ Runs all sub operations on an interface """

        # For backward compatibility execute scripts with
        # environent set
        cenv = ifupdownobj.generate_running_env(ifaceobj, op)

        # Each sub operation has a module list
        subopdict = ifupdownobj.operations.get(op)
        for subop, mdict in subopdict.items():
            self.run_iface_subop(ifupdownobj, ifaceobj, op, subop, mdict, cenv)


    def run_iface(self, ifupdownobj, ifacename, op):
        """ Runs operation on an interface """

        ifaceobjs = ifupdownobj.get_iface_objs(ifacename)
        for i in ifaceobjs:
            if (op != 'query' and ifupdownobj.STATE_CHECK == True and
                ifupdownobj.is_valid_state_transition(i, op) == False and
                ifupdownobj.FORCE == False):
                self.logger.warning('%s' %ifacename +
                        ' already %s' %op)
                continue

            self.run_iface_subops(ifupdownobj, i, op)


    def run_iface_list(self, ifupdownobj, ifacenames, operation,
                      sorted_by_dependency=False):
        """ Runs interface list serially executing all sub operations on
        each interface at a time. """

        self.logger.debug('run_iface_list: running interface list for ' +
                          'operation %s' %operation)

        iface_run_queue = deque(ifacenames)
        for i in range(0, len(iface_run_queue)):
            if operation == 'up':
                # XXX: simplify this
                if sorted_by_dependency == True:
                    ifacename = iface_run_queue.pop()
                else:
                    ifacename = iface_run_queue.popleft()
            else:
                if sorted_by_dependency == True:
                    ifacename = iface_run_queue.popleft()
                else:
                    ifacename = iface_run_queue.pop()

            try:
                self.run_iface(ifupdownobj, ifacename, operation)
            except Exception, e:
                self.log_error(str(e))

    def run_iface_list_subop(self, ifupdownobj, ifacenames, op, subop, mdict,
                             sorted_by_dependency=False):
        """ Runs interface list through sub operation handler. """

        self.logger.debug('running sub operation %s on all given interfaces' %op)

        iface_run_queue = deque(ifacenames)
        for i in range(0, len(iface_run_queue)):
            if op == 'up':
                # XXX: simplify this
                if sorted_by_dependency == True:
                    ifacename = iface_run_queue.pop()
                else:
                    ifacename = iface_run_queue.popleft()
            else:
                if sorted_by_dependency == True:
                    ifacename = iface_run_queue.popleft()
                else:
                    ifacename = iface_run_queue.pop()

            try:
                ifaceobjs = ifupdownobj.get_iface_objs(ifacename)
                for ifaceobj in ifaceobjs:
                    if (op != 'query' and ifupdownobj.STATE_CHECK == True and
                        ifupdownobj.is_valid_state_transition(ifaceobj,
                        op) == False and ifupdownobj.FORCE == False):
                        if subop == 'post-down' or subop == 'post-up':
                            self.logger.warning('%s: ' %ifacename +
                                                ' already %s' %op)
                        continue

                    cenv = ifupdownobj.generate_running_env(ifaceobj, op)
                    self.run_iface_subop(ifupdownobj, ifaceobj, op, subop,
                                         mdict, cenv)
            except Exception, e:
                self.log_error(str(e))

    def run_iface_list_stages(self, ifupdownobj, ifacenames, op,
                              sorted_by_dependency=False):
        """ Runs interface list through sub operations handler

        Unlike run_iface_list, this method executes a sub operation on the
        entire interface list before proceeding to the next sub-operation.
        ie operation 'pre-up' is run through the entire interface list before
        'up'
        """

        self.logger.debug('run_iface_list_stages: running interface list for %s'
                          %op)

        # Each sub operation has a module list
        subopdict = ifupdownobj.operations.get(op)
        for subop, mdict in subopdict.items():
            self.run_iface_list_subop(ifupdownobj, ifacenames, op, subop, mdict,
                    sorted_by_dependency)


    def run_iface_dependency_graph(self, ifupdownobj, dependency_graph,
                                   operation):
        """ runs interface dependency graph """

        indegrees = OrderedDict()

        self.logger.debug('creating indegree array ...')
        for ifacename in dependency_graph.keys():
            indegrees[ifacename] = ifupdownobj.get_iface_refcnt(ifacename)

        if self.logger.isEnabledFor(logging.DEBUG) == True:
            self.logger.debug('indegree array :')
            ifupdownobj.pp.pprint(indegrees)

        try:
            self.logger.debug('calling topological sort on the graph ...')
            sorted_ifacenames = graph.topological_sort(dependency_graph,
                                                       indegrees)
        except Exception, e:
            raise

        self.logger.debug('sorted iface list = %s' %sorted_ifacenames)

        #self.run_iface_list(ifupdownobj, sorted_ifacenames, operation,
        #                    sorted_by_dependency=True)

        self.run_iface_list_stages(ifupdownobj, sorted_ifacenames, operation,
                                   sorted_by_dependency=True)


    def init_tokens(self, count):
        self.token_pool = BoundedSemaphore(count)
        self.logger.debug('initialized bounded semaphore with %d' %count)

    def accquire_token(self, logprefix=''):
        self.token_pool.acquire()
        self.logger.debug('%s ' %logprefix + 'acquired token')

    def release_token(self, logprefix=''):
        self.token_pool.release()
        self.logger.debug('%s ' %logprefix + 'release token')

    def run_iface_parallel(self, ifupdownobj, ifacename, op):
        """ Configures interface in parallel.
        
        Executes all its direct dependents in parallel
        
        """

        self.logger.debug('%s:' %ifacename + ' %s' %op)
        self.accquire_token(iface)

        # Each iface can have a list of objects
        ifaceobjs = ifupdownobj.get_iface_objs(ifacename)
        if ifaceobjs is None:
            self.logger.warning('%s: ' %ifacename + 'not found')
            self.release_token(ifacename)
            return -1

        for ifaceobj in ifaceobjs:
            # Run dependents
            dlist = ifaceobj.get_dependents()
            if dlist is not None and len(dlist) > 0:
                self.logger.debug('%s:' %ifacename +
                    ' found dependents: %s' %str(dlist))
                try:
                    self.release_token(ifacename)
                    self.run_iface_list_parallel(ifacename, ifupdownobj,
                                                 dlist, op)
                    self.accquire_token(ifacename)
                except Exception, e:
                    if (self.ignore_error(str(e)) == True):
                        pass
                    else:
                        # Dont bring the iface up if children did not come up
                        self.logger.debug('%s:' %ifacename +
                            ' there was an error bringing %s' %op +
                            ' dependents (%s)', str(e))
                        ifupdownobj.set_iface_state(ifaceobj,
                            ifaceState.from_str(
                                    ifupdownobj.get_subops(op)[0]),
                            ifaceStatus.ERROR)
                        return -1

            if (op != 'query' and ifupdownobj.STATE_CHECK == True and
                ifupdownobj.is_valid_state_transition(ifaceobj,
                    op) == False and ifupdownobj.FORCE == False):
                self.logger.warning('%s:' %ifacename + ' already %s' %op)
                continue


            # Run all sub operations sequentially
            try:
                self.logger.debug('%s:' %ifacename + ' running sub-operations')
                self.run_iface_subops(ifupdownobj, ifaceobj, op)
            except Exception, e:
                self.logger.error('%s:' %ifacename +
                    ' error running sub operations (%s)' %str(e))

        self.release_token(ifacename)


    def run_iface_list_parallel(self, parent, ifupdownobj, ifacenames, op):
        """ Runs interface list in parallel """

        running_threads = OrderedDict()
        err = 0

        for ifacename in ifacenames:
            try:
                self.accquire_token(parent)
                running_threads[ifacename] = Thread(None,
                    self.run_iface_parallel, ifacename,
                    args=(ifupdownobj, ifacename, op))
                running_threads[ifacename].start()
                self.release_token(parent)
            except Exception, e:
                self.release_token(parent)
                if (ifupdownobj.ignore_error(str(e)) == True):
                    pass
                else:
                    raise Exception('error starting thread for iface %s'
                            %ifacename)


        self.logger.debug('%s' %parent + 'waiting for all the threads ...')
        for ifacename, t  in running_threads.items():
            t.join()
            if ifupdownobj.get_iface_status(ifacename) != ifaceStatus.SUCCESS:
                err += 1

        return err

    def run_iface_graphs_parallel(self, parent, ifupdownobj, ifacenames, op):
        """ Runs iface graphs in parallel """

        running_threads = OrderedDict()
        err = 0

        for ifacename in ifacenames:
            try:
                self.accquire_graph_token(parent)
                running_threads[ifacename] = Thread(None,
                    self.run_iface_parallel, ifacename,
                    args=(ifupdownobj, ifacename, op))
                running_threads[ifacename].start()
                self.release_graph_token(parent)
            except Exception, e:
                self.release_graph_token(parent)
                if (ifupdownobj.ignore_error(str(e)) == True):
                    pass
                else:
                    raise Exception('error starting thread for iface %s'
                            %ifacename)

        self.logger.info('%s' %parent + 'waiting for all the threads ...')
        for ifacename, t  in running_threads.items():
            t.join()
            # Check status of thread
            # XXX: Check all objs
            if ifupdownobj.get_iface_status(ifacename) != ifaceStatus.SUCCESS:
                err += 1

        return err

    def run_iface_dependency_graph_parallel(self, ifupdownobj, dependency_graph,
                                            operation):
        """ Runs iface dependeny graph in parallel.
        
        arguments:
        ifupdownobj -- ifupdown object (used for getting and updating iface
                                        object state)
        dependency_graph -- dependency graph with 
        operation -- 'up' or 'down' or 'query'

        """

        self.logger.debug('running dependency graph in parallel ..')

        run_queue = []

        # Build a list of ifaces that dont have any dependencies
        for ifacename in dependency_graph.keys():
            if ifupdownobj.get_iface_refcnt(ifacename) == 0:
                run_queue.append(ifacename)

        self.logger.debug('graph roots (interfaces that dont have dependents):' +
                          ' %s' %str(run_queue))

        self.init_tokens(ifupdownobj.get_njobs())

        return self.run_iface_list_parallel('main', ifupdownobj, run_queue,
                                            operation)

        # OR
        # Run one graph at a time
        #for iface in run_queue:
        #    self.run_iface_list_parallel('main', ifupdownobj, [iface],
        #            operation)
Commit	Line	Data
a6f80f0e	1	#!/usr/bin/python
3e8ee54f	2	#
	3	# Copyright 2013. Cumulus Networks, Inc.
	4	# Author: Roopa Prabhu, roopa@cumulusnetworks.com
	5	#
	6	# ifaceScheduler --
	7	# interface scheduler
	8	#
a6f80f0e	9
	10	import os
	11	import re
	12	from statemanager import *
	13	from iface import *
	14	from graph import *
	15	from collections import deque
	16	from collections import OrderedDict
	17	import imp
	18	import pprint
	19	import logging
	20	from graph import *
	21	from collections import deque
	22	from threading import *
	23	from ifupdownbase import *
	24
	25	class ifaceScheduler(ifupdownBase):
	26	""" scheduler to schedule configuration of interfaces.
	27
	28
	29	supports scheduling of interfaces serially in plain interface list
	30	or dependency graph format.
	31	"""
	32
3e8ee54f	33	def __init__(self, force=False):
a6f80f0e	34	self.logger = logging.getLogger('ifupdown.' +
a6f80f0e	35	self.__class__.__name__)
3e8ee54f	36	self.FORCE = force
a6f80f0e	37
	38	def run_iface_subop(self, ifupdownobj, ifaceobj, op, subop, mdict, cenv):
	39	""" Runs sub operation on an interface """
	40
	41	self.logger.debug('%s: ' %ifaceobj.get_name() + 'op %s' %op +
	42	' subop = %s' %subop)
	43
	44	for mname, mdata in mdict.items():
	45	m = mdata.get('module')
	46	err = 0
	47	try:
	48	if (mdata.get('ftype') == 'pmodule' and
	49	hasattr(m, 'run') == True):
	50	self.logger.debug('%s: ' %ifaceobj.get_name() +
	51	'running module %s' %mname +
	52	' op %s' %op + ' subop %s' %subop)
	53	if op == 'query':
	54	m.run(ifaceobj, subop, query=True,
	55	query_ifaceobj=ifupdownobj.create_ifaceobjcurr(
	56	ifaceobj.get_name()))
	57	else:
	58	m.run(ifaceobj, subop)
	59	else:
	60	self.logger.debug('%s: ' %ifaceobj.get_name() +
	61	'running script %s' %mname +
	62	' op %s' %op + ' subop %s' %subop)
	63	self.exec_command(m, cmdenv=cenv)
	64	except Exception, e:
	65	err = 1
3e8ee54f	66	self.log_error(str(e))
a6f80f0e	67	finally:
	68	if op != 'query':
	69	if err == 1:
	70	ifupdownobj.set_iface_state(ifaceobj,
	71	ifaceState.from_str(subop),
	72	ifaceStatus.ERROR)
	73	else:
	74	ifupdownobj.set_iface_state(ifaceobj,
	75	ifaceState.from_str(subop),
	76	ifaceStatus.SUCCESS)
	77
	78	def run_iface_subops(self, ifupdownobj, ifaceobj, op):
	79	""" Runs all sub operations on an interface """
	80
	81	# For backward compatibility execute scripts with
	82	# environent set
	83	cenv = ifupdownobj.generate_running_env(ifaceobj, op)
	84
	85	# Each sub operation has a module list
	86	subopdict = ifupdownobj.operations.get(op)
	87	for subop, mdict in subopdict.items():
	88	self.run_iface_subop(ifupdownobj, ifaceobj, op, subop, mdict, cenv)
	89
	90
	91	def run_iface(self, ifupdownobj, ifacename, op):
	92	""" Runs operation on an interface """
	93
	94	ifaceobjs = ifupdownobj.get_iface_objs(ifacename)
	95	for i in ifaceobjs:
	96	if (op != 'query' and ifupdownobj.STATE_CHECK == True and
	97	ifupdownobj.is_valid_state_transition(i, op) == False and
	98	ifupdownobj.FORCE == False):
	99	self.logger.warning('%s' %ifacename +
	100	' already %s' %op)
	101	continue
	102
	103	self.run_iface_subops(ifupdownobj, i, op)
	104
	105
	106	def run_iface_list(self, ifupdownobj, ifacenames, operation,
	107	sorted_by_dependency=False):
	108	""" Runs interface list serially executing all sub operations on
	109	each interface at a time. """
	110
	111	self.logger.debug('run_iface_list: running interface list for ' +
	112	'operation %s' %operation)
	113
	114	iface_run_queue = deque(ifacenames)
	115	for i in range(0, len(iface_run_queue)):
	116	if operation == 'up':
	117	# XXX: simplify this
	118	if sorted_by_dependency == True:
	119	ifacename = iface_run_queue.pop()
	120	else:
	121	ifacename = iface_run_queue.popleft()
	122	else:
	123	if sorted_by_dependency == True:
	124	ifacename = iface_run_queue.popleft()
	125	else:
	126	ifacename = iface_run_queue.pop()
	127
	128	try:
	129	self.run_iface(ifupdownobj, ifacename, operation)
	130	except Exception, e:
3e8ee54f	131	self.log_error(str(e))
a6f80f0e	132
	133	def run_iface_list_subop(self, ifupdownobj, ifacenames, op, subop, mdict,
	134	sorted_by_dependency=False):
	135	""" Runs interface list through sub operation handler. """
	136
	137	self.logger.debug('running sub operation %s on all given interfaces' %op)
	138
	139	iface_run_queue = deque(ifacenames)
	140	for i in range(0, len(iface_run_queue)):
	141	if op == 'up':
	142	# XXX: simplify this
	143	if sorted_by_dependency == True:
	144	ifacename = iface_run_queue.pop()
	145	else:
	146	ifacename = iface_run_queue.popleft()
	147	else:
	148	if sorted_by_dependency == True:
	149	ifacename = iface_run_queue.popleft()
	150	else:
	151	ifacename = iface_run_queue.pop()
	152
	153	try:
	154	ifaceobjs = ifupdownobj.get_iface_objs(ifacename)
	155	for ifaceobj in ifaceobjs:
	156	if (op != 'query' and ifupdownobj.STATE_CHECK == True and
	157	ifupdownobj.is_valid_state_transition(ifaceobj,
	158	op) == False and ifupdownobj.FORCE == False):
	159	if subop == 'post-down' or subop == 'post-up':
	160	self.logger.warning('%s: ' %ifacename +
	161	' already %s' %op)
	162	continue
	163
	164	cenv = ifupdownobj.generate_running_env(ifaceobj, op)
	165	self.run_iface_subop(ifupdownobj, ifaceobj, op, subop,
	166	mdict, cenv)
	167	except Exception, e:
3e8ee54f	168	self.log_error(str(e))
a6f80f0e	169
	170	def run_iface_list_stages(self, ifupdownobj, ifacenames, op,
	171	sorted_by_dependency=False):
	172	""" Runs interface list through sub operations handler
	173
	174	Unlike run_iface_list, this method executes a sub operation on the
	175	entire interface list before proceeding to the next sub-operation.
	176	ie operation 'pre-up' is run through the entire interface list before
	177	'up'
	178	"""
	179
	180	self.logger.debug('run_iface_list_stages: running interface list for %s'
	181	%op)
	182
	183	# Each sub operation has a module list
	184	subopdict = ifupdownobj.operations.get(op)
	185	for subop, mdict in subopdict.items():
	186	self.run_iface_list_subop(ifupdownobj, ifacenames, op, subop, mdict,
	187	sorted_by_dependency)
	188
	189
	190	def run_iface_dependency_graph(self, ifupdownobj, dependency_graph,
	191	operation):
	192	""" runs interface dependency graph """
	193
	194	indegrees = OrderedDict()
	195
	196	self.logger.debug('creating indegree array ...')
	197	for ifacename in dependency_graph.keys():
	198	indegrees[ifacename] = ifupdownobj.get_iface_refcnt(ifacename)
	199
	200	if self.logger.isEnabledFor(logging.DEBUG) == True:
	201	self.logger.debug('indegree array :')
	202	ifupdownobj.pp.pprint(indegrees)
	203
	204	try:
	205	self.logger.debug('calling topological sort on the graph ...')
	206	sorted_ifacenames = graph.topological_sort(dependency_graph,
	207	indegrees)
	208	except Exception, e:
	209	raise
	210
	211	self.logger.debug('sorted iface list = %s' %sorted_ifacenames)
	212
	213	#self.run_iface_list(ifupdownobj, sorted_ifacenames, operation,
	214	# sorted_by_dependency=True)
	215
	216	self.run_iface_list_stages(ifupdownobj, sorted_ifacenames, operation,
	217	sorted_by_dependency=True)
	218
	219
	220	def init_tokens(self, count):
	221	self.token_pool = BoundedSemaphore(count)
	222	self.logger.debug('initialized bounded semaphore with %d' %count)
	223
	224	def accquire_token(self, logprefix=''):
	225	self.token_pool.acquire()
	226	self.logger.debug('%s ' %logprefix + 'acquired token')
	227
	228	def release_token(self, logprefix=''):
	229	self.token_pool.release()
	230	self.logger.debug('%s ' %logprefix + 'release token')
	231
	232	def run_iface_parallel(self, ifupdownobj, ifacename, op):
233	""" Configures interface in parallel.
234
235	Executes all its direct dependents in parallel
236
237	"""
238
239	self.logger.debug('%s:' %ifacename + ' %s' %op)
240	self.accquire_token(iface)
241
242	# Each iface can have a list of objects
243	ifaceobjs = ifupdownobj.get_iface_objs(ifacename)
244	if ifaceobjs is None:
245	self.logger.warning('%s: ' %ifacename + 'not found')
246	self.release_token(ifacename)
247	return -1
248
249	for ifaceobj in ifaceobjs:
250	# Run dependents
251	dlist = ifaceobj.get_dependents()
252	if dlist is not None and len(dlist) > 0:
253	self.logger.debug('%s:' %ifacename +
254	' found dependents: %s' %str(dlist))
255	try:
256	self.release_token(ifacename)
257	self.run_iface_list_parallel(ifacename, ifupdownobj,
258	dlist, op)
259	self.accquire_token(ifacename)
260	except Exception, e:
3e8ee54f	261	if (self.ignore_error(str(e)) == True):
a6f80f0e	262	pass
	263	else:
	264	# Dont bring the iface up if children did not come up
	265	self.logger.debug('%s:' %ifacename +
	266	' there was an error bringing %s' %op +
	267	' dependents (%s)', str(e))
	268	ifupdownobj.set_iface_state(ifaceobj,
	269	ifaceState.from_str(
	270	ifupdownobj.get_subops(op)[0]),
	271	ifaceStatus.ERROR)
	272	return -1
	273
	274	if (op != 'query' and ifupdownobj.STATE_CHECK == True and
	275	ifupdownobj.is_valid_state_transition(ifaceobj,
	276	op) == False and ifupdownobj.FORCE == False):
	277	self.logger.warning('%s:' %ifacename + ' already %s' %op)
	278	continue
	279
	280
	281	# Run all sub operations sequentially
	282	try:
	283	self.logger.debug('%s:' %ifacename + ' running sub-operations')
	284	self.run_iface_subops(ifupdownobj, ifaceobj, op)
	285	except Exception, e:
	286	self.logger.error('%s:' %ifacename +
	287	' error running sub operations (%s)' %str(e))
	288
	289	self.release_token(ifacename)
	290
	291
	292	def run_iface_list_parallel(self, parent, ifupdownobj, ifacenames, op):
	293	""" Runs interface list in parallel """
	294
	295	running_threads = OrderedDict()
	296	err = 0
	297
	298	for ifacename in ifacenames:
	299	try:
	300	self.accquire_token(parent)
	301	running_threads[ifacename] = Thread(None,
	302	self.run_iface_parallel, ifacename,
	303	args=(ifupdownobj, ifacename, op))
	304	running_threads[ifacename].start()
	305	self.release_token(parent)
	306	except Exception, e:
	307	self.release_token(parent)
	308	if (ifupdownobj.ignore_error(str(e)) == True):
	309	pass
	310	else:
	311	raise Exception('error starting thread for iface %s'
	312	%ifacename)
	313
	314
	315	self.logger.debug('%s' %parent + 'waiting for all the threads ...')
	316	for ifacename, t in running_threads.items():
	317	t.join()
	318	if ifupdownobj.get_iface_status(ifacename) != ifaceStatus.SUCCESS:
	319	err += 1
	320
	321	return err
	322
	323	def run_iface_graphs_parallel(self, parent, ifupdownobj, ifacenames, op):
	324	""" Runs iface graphs in parallel """
	325
326	running_threads = OrderedDict()
327	err = 0
328
329	for ifacename in ifacenames:
330	try:
331	self.accquire_graph_token(parent)
332	running_threads[ifacename] = Thread(None,
333	self.run_iface_parallel, ifacename,
334	args=(ifupdownobj, ifacename, op))
335	running_threads[ifacename].start()
336	self.release_graph_token(parent)
337	except Exception, e:
338	self.release_graph_token(parent)
339	if (ifupdownobj.ignore_error(str(e)) == True):
340	pass
341	else:
342	raise Exception('error starting thread for iface %s'
343	%ifacename)
344
345	self.logger.info('%s' %parent + 'waiting for all the threads ...')
346	for ifacename, t in running_threads.items():
347	t.join()
348	# Check status of thread
349	# XXX: Check all objs
350	if ifupdownobj.get_iface_status(ifacename) != ifaceStatus.SUCCESS:
351	err += 1
352
353	return err
354
355	def run_iface_dependency_graph_parallel(self, ifupdownobj, dependency_graph,
356	operation):
357	""" Runs iface dependeny graph in parallel.
358
359	arguments:
360	ifupdownobj -- ifupdown object (used for getting and updating iface
361	object state)
362	dependency_graph -- dependency graph with
363	operation -- 'up' or 'down' or 'query'
364
365	"""
366
367	self.logger.debug('running dependency graph in parallel ..')
368
369	run_queue = []
370
371	# Build a list of ifaces that dont have any dependencies
372	for ifacename in dependency_graph.keys():
373	if ifupdownobj.get_iface_refcnt(ifacename) == 0:
374	run_queue.append(ifacename)
375
376	self.logger.debug('graph roots (interfaces that dont have dependents):' +
377	' %s' %str(run_queue))
378
379	self.init_tokens(ifupdownobj.get_njobs())
380
381	return self.run_iface_list_parallel('main', ifupdownobj, run_queue,
382	operation)
383
384	# OR
385	# Run one graph at a time
386	#for iface in run_queue:
387	# self.run_iface_list_parallel('main', ifupdownobj, [iface],
388	# operation)
389