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satellite.py
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satellite.py
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright (C) 2009-2012:
# Gabes Jean, naparuba@gmail.com
# Gerhard Lausser, Gerhard.Lausser@consol.de
# Gregory Starck, g.starck@gmail.com
# Hartmut Goebel, h.goebel@goebel-consult.de
#
# This file is part of Shinken.
#
# Shinken is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Shinken is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with Shinken. If not, see <http://www.gnu.org/licenses/>.
"""
This class is an interface for Reactionner and Poller daemons
A Reactionner listens to a port for the configuration from the Arbiter
The conf contains the schedulers where actionners will gather actions.
The Reactionner keeps on listening to the Arbiter
(one a timeout)
If Arbiter wants it to have a new conf, the satellite forgets the previous
Schedulers (and actions into) and takes the new ones.
"""
# Try to see if we are in an android device or not
is_android = True
try:
import android
except ImportError:
is_android = False
from Queue import Empty
if not is_android:
from multiprocessing import Queue, Manager, active_children, cpu_count
else:
from Queue import Queue
import os
import copy
import time
import sys
import cPickle
import traceback
import socket
try:
import shinken.pyro_wrapper as pyro
except ImportError:
sys.exit("Shinken require the Python Pyro module. Please install it.")
Pyro = pyro.Pyro
PYRO_VERSION = pyro.PYRO_VERSION
from shinken.message import Message
from shinken.worker import Worker
from shinken.load import Load
from shinken.daemon import Daemon, Interface
from shinken.log import logger
from shinken.brok import Brok
from shinken.check import Check
from shinken.notification import Notification
from shinken.eventhandler import EventHandler
from shinken.external_command import ExternalCommand
# Pack of common Pyro exceptions
from shinken.pyro_wrapper import Pyro_exp_pack
# Class to tell that we are facing a non worker module
# but a standard one
class NotWorkerMod(Exception):
pass
# Interface for Arbiter, our big MASTER
# It gives us our conf
class IForArbiter(Interface):
# Arbiter ask us to do not manage a scheduler_id anymore
# I do it and don't ask why
def remove_from_conf(self, sched_id):
try:
del self.app.schedulers[sched_id]
except KeyError:
pass
# Arbiter ask me which sched_id I manage, If it is not ok with it
# It will ask me to remove one or more sched_id
def what_i_managed(self):
logger.debug("The arbiter asked me what I manage. It's %s" % self.app.what_i_managed())
return self.app.what_i_managed() # self.app.schedulers.keys()
# Call by arbiter if it thinks we are running but we must do not (like
# if I was a spare that take a conf but the master returns, I must die
# and wait a new conf)
# Us: No please...
# Arbiter: I don't care, hasta la vista baby!
# Us: ... <- Nothing! We are dead! you don't get it or what??
# Reading code is not a job for eyes only...
def wait_new_conf(self):
logger.debug("Arbiter wants me to wait for a new configuration")
self.app.schedulers.clear()
self.app.cur_conf = None
# <WTF??> Inconsistent comments!
# methods are only used by the arbiter or the broker?
# NB: following methods are only used by broker
# Used by the Arbiter to push broks to broker
# </WTF??>
def push_broks(self, broks):
self.app.add_broks_to_queue(broks.values())
return True
# The arbiter ask us our external commands in queue
def get_external_commands(self):
return self.app.get_external_commands()
### NB: only useful for receiver
def got_conf(self):
return self.app.cur_conf != None
# Use by the receivers to got the host names managed by the schedulers
def push_host_names(self, sched_id, hnames):
self.app.push_host_names(sched_id, hnames)
class ISchedulers(Interface):
"""Interface for Schedulers
If we are passive, they connect to this and send/get actions
"""
# A Scheduler send me actions to do
def push_actions(self, actions, sched_id):
# logger.debug("[%s] A scheduler sent me action : %s") % (self.name, actions)
self.app.add_actions(actions, sched_id)
# A scheduler ask us the action return value
def get_returns(self, sched_id):
#print "A scheduler ask me the returns", sched_id
ret = self.app.get_return_for_passive(sched_id)
#print "Send mack", len(ret), "returns"
return ret
class IBroks(Interface):
"""Interface for Brokers
They connect here and get all broks (data for brokers)
data must be ORDERED! (initial status BEFORE uodate...)
"""
# poller or reactionner ask us actions
def get_broks(self):
res = self.app.get_broks()
return res
class BaseSatellite(Daemon):
"""Please Add a Docstring to describe the class here"""
def __init__(self, name, config_file, is_daemon, do_replace, debug, debug_file):
super(BaseSatellite, self).__init__(name, config_file, is_daemon, \
do_replace, debug, debug_file)
# Ours schedulers
self.schedulers = {}
# Now we create the interfaces
self.interface = IForArbiter(self)
# The arbiter can resent us new conf in the pyro_daemon port.
# We do not want to loose time about it, so it's not a bloking
# wait, timeout = 0s
# If it send us a new conf, we reinit the connections of all schedulers
def watch_for_new_conf(self, timeout):
self.handleRequests(timeout)
def do_stop(self):
if self.pyro_daemon and self.interface:
logger.debug("Stopping all network connections")
self.pyro_daemon.unregister(self.interface)
super(BaseSatellite, self).do_stop()
# Give the arbiter the data about what I manage
# for me it's the ids of my schedulers
def what_i_managed(self):
r = {}
for (k, v) in self.schedulers.iteritems():
r[k] = v['push_flavor']
return r
class Satellite(BaseSatellite):
"""Our main APP class"""
def __init__(self, name, config_file, is_daemon, do_replace, debug, debug_file):
super(Satellite, self).__init__(name, config_file, is_daemon, do_replace, \
debug, debug_file)
# Keep broks so they can be eaten by a broker
self.broks = {}
self.workers = {} # dict of active workers
self.nb_actions_in_workers = 0
# Init stats like Load for workers
self.wait_ratio = Load(initial_value=1)
self.brok_interface = IBroks(self)
self.scheduler_interface = ISchedulers(self)
# Just for having these attributes defined here. explicit > implicit ;)
self.uri2 = None
self.uri3 = None
self.s = None
self.returns_queue = None
self.q_by_mod = {}
# Can have a queue of external_commands given by modules
# will be taken by arbiter to process
self.external_commands = []
# Initialize or re-initialize connection with scheduler """
def pynag_con_init(self, id):
sched = self.schedulers[id]
# If sched is not active, I do not try to init
# it is just useless
if not sched['active']:
return
sname = sched['name']
uri = sched['uri']
running_id = sched['running_id']
logger.info("[%s] Init connection with %s at %s" % (self.name, sname, uri))
try:
socket.setdefaulttimeout(3)
sch_con = sched['con'] = Pyro.core.getProxyForURI(uri)
socket.setdefaulttimeout(None)
except Pyro_exp_pack, exp:
# But the multiprocessing module is not copatible with it!
# so we must disable it imadiatly after
socket.setdefaulttimeout(None)
logger.warning("[%s] Scheduler %s is not initialized or has network problem: %s" % (self.name, sname, str(exp)))
sched['con'] = None
return
# timeout of 120 s
# and get the running id
try:
pyro.set_timeout(sch_con, 5)
new_run_id = sch_con.get_running_id()
except (Pyro.errors.ProtocolError, Pyro.errors.NamingError, cPickle.PicklingError, KeyError, Pyro.errors.CommunicationError, Pyro.errors.DaemonError), exp:
logger.warning("[%s] Scheduler %s is not initialized or has network problem: %s" % (self.name, sname, str(exp)))
sched['con'] = None
return
# The schedulers have been restarted: it has a new run_id.
# So we clear all verifs, they are obsolete now.
if sched['running_id'] != 0 and new_run_id != running_id:
logger.info("[%s] The running id of the scheduler %s changed, we must clear its actions" % (self.name, sname))
sched['wait_homerun'].clear()
sched['running_id'] = new_run_id
logger.info("[%s] Connection OK with scheduler %s" % (self.name, sname))
# Manage action returned from Workers
# We just put them into the corresponding sched
# and we clean unused properties like sched_id
def manage_action_return(self, action):
# Maybe our workers end us something else than an action
# if so, just add this in other queues and return
cls_type = action.__class__.my_type
if cls_type not in ['check', 'notification', 'eventhandler']:
self.add(action)
return
# Ok, it's a result. We get it, and fill verifs of the good sched_id
sched_id = action.sched_id
# Now we now where to put action, we do not need sched_id anymore
del action.sched_id
# Unset the tag of the worker_id too
try:
del action.worker_id
except AttributeError:
pass
# And we remove it from the actions queue of the scheduler too
try:
del self.schedulers[sched_id]['actions'][action.get_id()]
except KeyError:
pass
# We tag it as "return wanted", and move it in the wait return queue
# Stop, if it is "timeout" we need this information later
# in the scheduler
#action.status = 'waitforhomerun'
try:
self.schedulers[sched_id]['wait_homerun'][action.get_id()] = action
except KeyError:
pass
# We update stats
self.nb_actions_in_workers = -1
# Return the chk to scheduler and clean them
# REF: doc/shinken-action-queues.png (6)
def manage_returns(self):
#return
# For all schedulers, we check for waitforhomerun
# and we send back results
for sched_id in self.schedulers:
sched = self.schedulers[sched_id]
# If sched is not active, I do not try return
if not sched['active']:
continue
# Now ret have all verifs, we can return them
send_ok = False
ret = sched['wait_homerun'].values()
if ret is not []:
try:
con = sched['con']
if con is not None: # None = not initialized
send_ok = con.put_results(ret)
# Not connected or sched is gone
except (Pyro_exp_pack, KeyError), exp:
logger.debug('manage_returns exception:: %s,%s ' % (type(exp), str(exp)))
try:
logger.debug(''.join(PYRO_VERSION < "4.0" and Pyro.util.getPyroTraceback(exp) or Pyro.util.getPyroTraceback()))
except:
pass
self.pynag_con_init(sched_id)
return
except AttributeError, exp: # the scheduler must not be initialized
logger.debug('manage_returns exception:: %s,%s ' % (type(exp), str(exp)))
except Exception, exp:
logger.error("A satellite raised an unknown exception: %s (%s)" % (exp, type(exp)))
try:
logger.debug(''.join(PYRO_VERSION < "4.0" and Pyro.util.getPyroTraceback(exp) or Pyro.util.getPyroTraceback()))
except:
pass
raise
# We clean ONLY if the send is OK
if send_ok:
sched['wait_homerun'].clear()
else:
self.pynag_con_init(sched_id)
logger.warning("Sent failed!")
# Get all returning actions for a call from a
# scheduler
def get_return_for_passive(self, sched_id):
# I do not know this scheduler?
if sched_id not in self.schedulers:
logger.debug("I do not know this scheduler: %s" % sched_id)
return []
sched = self.schedulers[sched_id]
logger.debug("Preparing to return %s" % str(sched['wait_homerun'].values()))
# prepare our return
ret = copy.copy(sched['wait_homerun'].values())
# and clear our dict
sched['wait_homerun'].clear()
return ret
# Create and launch a new worker, and put it into self.workers
# It can be mortal or not
def create_and_launch_worker(self, module_name='fork', mortal=True):
# ceate the input queue of this worker
try:
if is_android:
q = Queue()
else:
q = self.manager.Queue()
# If we got no /dev/shm on linux, we can got problem here.
# Must raise with a good message
except OSError, exp:
# We look for the "Function not implemented" under Linux
if exp.errno == 38 and os.name == 'posix':
logger.error("Got an exception (%s). If you are under Linux, please check that your /dev/shm directory exists." % (str(exp)))
raise
# If we are in the fork module, we do not specify a target
target = None
if module_name == 'fork':
target = None
else:
for module in self.modules_manager.instances:
if module.properties['type'] == module_name:
# First, see if the module is a 'worker' one or not
if not module.properties.get('worker_capable', False):
raise NotWorkerMod
target = module.work
if target is None:
return
# We want to give to the Worker the name of the daemon (poller or reactionner)
cls_name = self.__class__.__name__.lower()
w = Worker(1, q, self.returns_queue, self.processes_by_worker, \
mortal=mortal, max_plugins_output_length=self.max_plugins_output_length, target=target, loaded_into=cls_name)
w.module_name = module_name
# save this worker
self.workers[w.id] = w
# And save the Queue of this worker, with key = worker id
self.q_by_mod[module_name][w.id] = q
logger.info("[%s] Allocating new %s Worker: %s" % (self.name, module_name, w.id))
# Ok, all is good. Start it!
w.start()
# The main stop of this daemon. Stop all workers
# modules and sockets
def do_stop(self):
logger.info("Stopping all workers")
for w in self.workers.values():
try:
w.terminate()
w.join(timeout=1)
# A already dead worker or in a worker
except (AttributeError, AssertionError):
pass
# Close the pyro server socket if it was opened
if self.pyro_daemon:
logger.info("Stopping all network connections")
if self.brok_interface:
self.pyro_daemon.unregister(self.brok_interface)
if self.scheduler_interface:
self.pyro_daemon.unregister(self.scheduler_interface)
# And then call our master stop from satellite code
super(Satellite, self).do_stop()
# Call by arbiter to get our external commands
def get_external_commands(self):
res = self.external_commands
self.external_commands = []
return res
# A simple function to add objects in self
# like broks in self.broks, etc
# TODO: better tag ID?
def add(self, elt):
cls_type = elt.__class__.my_type
if cls_type == 'brok':
# For brok, we TAG brok with our instance_id
elt.instance_id = 0
self.broks[elt.id] = elt
return
elif cls_type == 'externalcommand':
logger.debug("Enqueuing an external command '%s'" % str(elt.__dict__))
self.external_commands.append(elt)
# Someone ask us our broks. We send them, and clean the queue
def get_broks(self):
res = copy.copy(self.broks)
self.broks.clear()
return res
# workers are processes, they can die in a numerous of ways
# like:
# *99.99%: bug in code, sorry:p
# *0.005 %: a mix between a stupid admin (or an admin without coffee),
# and a kill command
# *0.005%: alien attack
# So they need to be detected, and restart if need
def check_and_del_zombie_workers(self):
# In android, we are using threads, so there is not active_children call
if not is_android:
# Active children make a join with everyone, useful :)
active_children()
w_to_del = []
for w in self.workers.values():
# If a worker goes down and we did not ask him, it's not
# good: we can think that we have a worker and it's not True
# So we del it
if not w.is_alive():
logger.warning("[%s] The worker %s goes down unexpectly!" % (self.name, w.id))
# Terminate immediately
w.terminate()
w.join(timeout=1)
w_to_del.append(w.id)
# OK, now really del workers from queues
# And requeue the actions it was managed
for id in w_to_del:
w = self.workers[id]
# Del the queue of the module queue
del self.q_by_mod[w.module_name][w.id]
for sched_id in self.schedulers:
sched = self.schedulers[sched_id]
for a in sched['actions'].values():
if a.status == 'queue' and a.worker_id == id:
# Got a check that will NEVER return if we do not
# restart it
self.assign_to_a_queue(a)
# So now we can really forgot it
del self.workers[id]
# Here we create new workers if the queue load (len of verifs) is too long
def adjust_worker_number_by_load(self):
# TODO: get a real value for a load
wish_worker = 1
# I want at least min_workers or wish_workers (the biggest)
# but not more than max_workers
while len(self.workers) < self.min_workers \
or (wish_worker > len(self.workers) \
and len(self.workers) < self.max_workers):
to_del = []
for mod in self.q_by_mod:
try:
self.create_and_launch_worker(module_name=mod)
# Maybe this modules is not a true worker one.
# if so, just delete if from q_by_mod
except NotWorkerMod:
to_del.append(mod)
for mod in to_del:
logger.debug("The module %s is not a worker one, I remove it from the worker list" % mod)
del self.q_by_mod[mod]
# TODO: if len(workers) > 2*wish, maybe we can kill a worker?
# Get the Queue() from an action by looking at which module
# it wants with a round robin way to scale the load between
# workers
def _got_queue_from_action(self, a):
# get the module name, if not, take fork
mod = getattr(a, 'module_type', 'fork')
queues = self.q_by_mod[mod].items()
# Maybe there is no more queue, it's very bad!
if len(queues) == 0:
return (0, None)
# if not get a round robin index to get a queue based
# on the action id
rr_idx = a.id % len(queues)
(i, q) = queues[rr_idx]
# return the id of the worker (i), and its queue
return (i, q)
# Add a list of actions to our queues
def add_actions(self, lst, sched_id):
for a in lst:
# First we look if we do not already have it, if so
# do nothing, we are already working!
if a.id in self.schedulers[sched_id]['actions']:
continue
a.sched_id = sched_id
a.status = 'queue'
self.assign_to_a_queue(a)
# Update stats
self.nb_actions_in_workers += 1
# Take an action and put it into one queue
def assign_to_a_queue(self, a):
msg = Message(id=0, type='Do', data=a)
(i, q) = self._got_queue_from_action(a)
# Tag the action as "in the worker i"
a.worker_id = i
if q is not None:
q.put(msg)
# We get new actions from schedulers, we create a Message and we
# put it in the s queue (from master to slave)
# REF: doc/shinken-action-queues.png (1)
def get_new_actions(self):
now = time.time()
# Here are the differences between a
# poller and a reactionner:
# Poller will only do checks,
# reactionner do actions (notif + event handlers)
do_checks = self.__class__.do_checks
do_actions = self.__class__.do_actions
# We check for new check in each schedulers and put the result in new_checks
for sched_id in self.schedulers:
sched = self.schedulers[sched_id]
# If sched is not active, I do not try return
if not sched['active']:
continue
try:
con = sched['con']
if con is not None: # None = not initilized
pyro.set_timeout(con, 120)
# OK, go for it :)
tmp = con.get_checks(do_checks=do_checks, do_actions=do_actions, \
poller_tags=self.poller_tags, \
reactionner_tags=self.reactionner_tags, \
worker_name=self.name, \
module_types=self.q_by_mod.keys())
logger.debug("Ask actions to %d, got %d" % (sched_id, len(tmp)))
# We 'tag' them with sched_id and put into queue for workers
# REF: doc/shinken-action-queues.png (2)
self.add_actions(tmp, sched_id)
else: # no con? make the connection
self.pynag_con_init(sched_id)
# Ok, con is unknown, so we create it
# Or maybe is the connection lost, we recreate it
except (Pyro_exp_pack, KeyError), exp:
logger.debug('get_new_actions exception:: %s,%s ' % (type(exp), str(exp)))
try:
logger.debug(''.join(PYRO_VERSION < "4.0" and Pyro.util.getPyroTraceback(exp) or Pyro.util.getPyroTraceback()))
except:
pass
self.pynag_con_init(sched_id)
# scheduler must not be initialized
# or scheduler must not have checks
except (AttributeError, Pyro.errors.NamingError), exp:
logger.debug('get_new_actions exception:: %s,%s ' % (type(exp), str(exp)))
try:
logger.debug(''.join(PYRO_VERSION < "4.0" and Pyro.util.getPyroTraceback(exp) or Pyro.util.getPyroTraceback()))
except:
pass
# What the F**k? We do not know what happenned,
# log the error message if possible.
except Exception, exp:
logger.error("A satellite raised an unknown exception: %s (%s)" % (exp, type(exp)))
try:
logger.debug(''.join(PYRO_VERSION < "4.0" and Pyro.util.getPyroTraceback(exp) or Pyro.util.getPyroTraceback()))
except:
pass
raise
# In android we got a Queue, and a manager list for others
def get_returns_queue_len(self):
return self.returns_queue.qsize()
# In android we got a Queue, and a manager list for others
def get_returns_queue_item(self):
return self.returns_queue.get()
# Get 'objects' from external modules
# from now nobody use it, but it can be useful
# for a module like livestatus to raise external
# commands for example
def get_objects_from_from_queues(self):
for f in self.modules_manager.get_external_from_queues():
full_queue = True
while full_queue:
try:
o = f.get(block=False)
self.add(o)
except Empty:
full_queue = False
# An arbiter ask us to wait a new conf, so we must clean
# all the mess we did, and close modules too
def clean_previous_run(self):
# Clean all lists
self.schedulers.clear()
self.broks.clear()
self.external_commands = self.external_commands[:]
def do_loop_turn(self):
print "Loop turn"
# Maybe the arbiter ask us to wait for a new conf
# If true, we must restart all...
if self.cur_conf is None:
# Clean previous run from useless objects
# and close modules
self.clean_previous_run()
self.wait_for_initial_conf()
# we may have been interrupted or so; then
# just return from this loop turn
if not self.new_conf:
return
self.setup_new_conf()
# Now we check if arbiter speak to us in the pyro_daemon.
# If so, we listen to it
# When it push a conf, we reinit connections
# Sleep in waiting a new conf :)
# TODO: manage the diff again.
while self.timeout > 0:
begin = time.time()
self.watch_for_new_conf(self.timeout)
end = time.time()
if self.new_conf:
self.setup_new_conf()
self.timeout = self.timeout - (end - begin)
print " ======================== "
self.timeout = self.polling_interval
# Check if zombies workers are among us :)
# If so: KILL THEM ALL!!!
self.check_and_del_zombie_workers()
# But also modules
self.check_and_del_zombie_modules()
# Print stats for debug
for sched_id in self.schedulers:
sched = self.schedulers[sched_id]
for mod in self.q_by_mod:
# In workers we've got actions send to queue - queue size
for (i, q) in self.q_by_mod[mod].items():
logger.debug("[%d][%s][%s] Stats: Workers:%d (Queued:%d TotalReturnWait:%d)" % \
(sched_id, sched['name'], mod, i, q.qsize(), self.get_returns_queue_len()))
# Before return or get new actions, see how we manage
# old ones: are they still in queue (s)? If True, we
# must wait more or at least have more workers
wait_ratio = self.wait_ratio.get_load()
total_q = 0
for mod in self.q_by_mod:
for q in self.q_by_mod[mod].values():
total_q += q.qsize()
if total_q != 0 and wait_ratio < 2 * self.polling_interval:
logger.debug("I decide to up wait ratio")
self.wait_ratio.update_load(wait_ratio * 2)
#self.wait_ratio.update_load(self.polling_interval)
else:
# Go to self.polling_interval on normal run, if wait_ratio
# was >2*self.polling_interval,
# it make it come near 2 because if < 2, go up :)
self.wait_ratio.update_load(self.polling_interval)
wait_ratio = self.wait_ratio.get_load()
logger.debug("Wait ratio: %f" % wait_ratio)
# We can wait more than 1s if needed,
# no more than 5s, but no less than 1
timeout = self.timeout * wait_ratio
timeout = max(self.polling_interval, timeout)
self.timeout = min(5 * self.polling_interval, timeout)
# Maybe we do not have enough workers, we check for it
# and launch the new ones if needed
self.adjust_worker_number_by_load()
# Manage all messages we've got in the last timeout
# for queue in self.return_messages:
while self.get_returns_queue_len() != 0:
self.manage_action_return(self.get_returns_queue_item())
# If we are passive, we do not initiate the check getting
# and return
if not self.passive:
# Now we can get new actions from schedulers
self.get_new_actions()
# We send all finished checks
# REF: doc/shinken-action-queues.png (6)
self.manage_returns()
# Get objects from our modules that are not wroker based
self.get_objects_from_from_queues()
# Say to modules it's a new tick :)
self.hook_point('tick')
# Do this satellite (poller or reactionner) post "daemonize" init:
# we must register our interfaces for 3 possible callers: arbiter,
# schedulers or brokers.
def do_post_daemon_init(self):
# And we register them
self.uri2 = self.pyro_daemon.register(self.interface, "ForArbiter")
self.uri3 = self.pyro_daemon.register(self.brok_interface, "Broks")
self.uri4 = self.pyro_daemon.register(self.scheduler_interface, "Schedulers")
# self.s = Queue() # Global Master -> Slave
# We can open the Queeu for fork AFTER
self.q_by_mod['fork'] = {}
# Under Android, we do not have multiprocessing lib
# so use standard Queue threads things
# but in multiprocess, we are also using a Queue(). It's just
# not the same
if is_android:
self.returns_queue = Queue()
else:
self.returns_queue = self.manager.Queue()
# For multiprocess things, we should not have
# socket timeouts. will be set explicitly in Pyro calls
import socket
socket.setdefaulttimeout(None)
# Setup the new received conf from arbiter
def setup_new_conf(self):
conf = self.new_conf
logger.debug("[%s] Sending us a configuration %s" % (self.name, conf))
self.new_conf = None
self.cur_conf = conf
g_conf = conf['global']
# Got our name from the globals
if 'poller_name' in g_conf:
name = g_conf['poller_name']
elif 'reactionner_name' in g_conf:
name = g_conf['reactionner_name']
else:
name = 'Unnamed satellite'
self.name = name
self.passive = g_conf['passive']
if self.passive:
logger.info("[%s] Passive mode enabled." % self.name)
# If we've got something in the schedulers, we do not want it anymore
for sched_id in conf['schedulers']:
already_got = False
# We can already got this conf id, but with another address
if sched_id in self.schedulers:
new_addr = conf['schedulers'][sched_id]['address']
old_addr = self.schedulers[sched_id]['address']
new_port = conf['schedulers'][sched_id]['port']
old_port = self.schedulers[sched_id]['port']
# Should got all the same to be ok :)
if new_addr == old_addr and new_port == old_port:
already_got = True
if already_got:
logger.info("[%s] We already got the conf %d (%s)" % (self.name, sched_id, conf['schedulers'][sched_id]['name']))
wait_homerun = self.schedulers[sched_id]['wait_homerun']
actions = self.schedulers[sched_id]['actions']
s = conf['schedulers'][sched_id]
self.schedulers[sched_id] = s
if s['name'] in g_conf['satellitemap']:
s.update(g_conf['satellitemap'][s['name']])
uri = pyro.create_uri(s['address'], s['port'], 'Checks', self.use_ssl)
self.schedulers[sched_id]['uri'] = uri
if already_got:
self.schedulers[sched_id]['wait_homerun'] = wait_homerun
self.schedulers[sched_id]['actions'] = actions
else:
self.schedulers[sched_id]['wait_homerun'] = {}
self.schedulers[sched_id]['actions'] = {}
self.schedulers[sched_id]['running_id'] = 0
self.schedulers[sched_id]['active'] = s['active']
# Do not connect if we are a passive satellite
if not self.passive and not already_got:
# And then we connect to it :)
self.pynag_con_init(sched_id)
# Now the limit part, 0 mean: number of cpu of this machine :)
# if not available, use 4 (modern hardware)
self.max_workers = g_conf['max_workers']
if self.max_workers == 0 and not is_android:
try:
self.max_workers = cpu_count()
except NotImplementedError:
self.max_workers = 4
logger.info("Using max workers: %s" % self.max_workers)
self.min_workers = g_conf['min_workers']
if self.min_workers == 0 and not is_android:
try:
self.min_workers = cpu_count()
except NotImplementedError:
self.min_workers = 4
logger.info("Using min workers: %s" % self.min_workers)
self.processes_by_worker = g_conf['processes_by_worker']
self.polling_interval = g_conf['polling_interval']
self.timeout = self.polling_interval
# Now set tags
# ['None'] is the default tags
self.poller_tags = g_conf.get('poller_tags', ['None'])
self.reactionner_tags = g_conf.get('reactionner_tags', ['None'])
self.max_plugins_output_length = g_conf.get('max_plugins_output_length', 8192)
# Set our giving timezone from arbiter
use_timezone = g_conf['use_timezone']
if use_timezone != 'NOTSET':
logger.info("[%s] Setting our timezone to %s" % (self.name, use_timezone))
os.environ['TZ'] = use_timezone
time.tzset()
logger.info("We have our schedulers: %s" % (str(self.schedulers)))
# Now manage modules
# TODO: check how to better handle this with modules_manager..
mods = g_conf['modules']
for module in mods:
# If we already got it, bypass
if not module.module_type in self.q_by_mod:
logger.debug("Add module object %s" % str(module))
self.modules_manager.modules.append(module)
logger.info("[%s] Got module: %s " % (self.name, module.module_type))
self.q_by_mod[module.module_type] = {}
def main(self):
try:
for line in self.get_header():
self.log.info(line)
self.load_config_file()
self.do_daemon_init_and_start()
self.do_post_daemon_init()
# We wait for initial conf
self.wait_for_initial_conf()
if not self.new_conf: # we must have either big problem or was requested to shutdown
return
self.setup_new_conf()
# We can load our modules now
self.modules_manager.set_modules(self.modules_manager.modules)
self.do_load_modules()
# And even start external ones
self.modules_manager.start_external_instances()
# Allocate Mortal Threads
for _ in xrange(1, self.min_workers):
to_del = []
for mod in self.q_by_mod:
try:
self.create_and_launch_worker(module_name=mod)
# Maybe this modules is not a true worker one.
# if so, just delete if from q_by_mod
except NotWorkerMod:
to_del.append(mod)
for mod in to_del:
logger.debug("The module %s is not a worker one, I remove it from the worker list" % mod)
del self.q_by_mod[mod]
# Now main loop
self.do_mainloop()
except Exception, exp:
logger.error("I got an unrecoverable error. I have to exit")
logger.error("You can log a bug ticket at https://github.com/naparuba/shinken/issues/new to get help")
logger.error("Back trace of it: %s" % (traceback.format_exc()))
raise