Synnefo

# Copyright 2011 GRNET S.A. All rights reserved.

# Redistribution and use in source and binary forms, with or without

# modification, are permitted provided that the following conditions

# are met:

#   1. Redistributions of source code must retain the above copyright

#      notice, this list of conditions and the following disclaimer.

#  2. Redistributions in binary form must reproduce the above copyright

#     notice, this list of conditions and the following disclaimer in the

#     documentation and/or other materials provided with the distribution.

#

# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND

# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

# ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE

# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

# SUCH DAMAGE.

#

# The views and conclusions contained in the software and documentation are

# those of the authors and should not be interpreted as representing official

# policies, either expressed or implied, of GRNET S.A.

# Callback functions used by the dispatcher to process incoming notifications

# from AMQP queues.

# Copyright 2011 GRNET S.A. All rights reserved.

#

# Redistribution and use in source and binary forms, with or without

# modification, are permitted provided that the following conditions

# are met:

#

#   1. Redistributions of source code must retain the above copyright

#      notice, this list of conditions and the following disclaimer.

#

#  2. Redistributions in binary form must reproduce the above copyright

#     notice, this list of conditions and the following disclaimer in the

#     documentation and/or other materials provided with the distribution.

#

# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND

# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

# ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE

# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

# SUCH DAMAGE.

#

# The views and conclusions contained in the software and documentation are

# those of the authors and should not be interpreted as representing official

# policies, either expressed or implied, of GRNET S.A.

#

# Reconcile VM state - Management Script

from django.core.management.base import NoArgsCommand

from synnefo.db.models import VirtualMachine

from django.conf import settings

from datetime import datetime, timedelta

from amqplib import client_0_8 as amqp

import time

import socket

import json

class Command(NoArgsCommand):

    help = 'Reconcile VM status with the backend'

    def open_channel(self):

        conn = None

        while conn == None:

            try:

                conn = amqp.Connection( host=settings.RABBIT_HOST,

                     userid=settings.RABBIT_USERNAME,

                     password=settings.RABBIT_PASSWORD,

                     virtual_host=settings.RABBIT_VHOST)

            except socket.error:

                time.sleep(1)

                pass

        return conn.channel()

    def handle_noargs(self, **options):

        now = datetime.now()

        last_update = timedelta(minutes = 30)

        not_updated = VirtualMachine.objects.filter(updated__lte = (now - last_update))

        all =  VirtualMachine.objects.all()

        to_update = all.count() / settings.RECONCILIATION_MIN

        vm_ids = map(lambda x: x.name,  VirtualMachine.objects.all()[:to_update])

        sent = False

        for vmid in vm_ids :

            while sent is False:

                try:

                    msg = dict(type = "reconciliate", vmid = vmid)

                    self.chan.basic_publish(json.dumps(msg),

                            exchange=settings.EXCHANGE_CRON,

                            routing_key="reconciliation.%s"%vmid)

                    sent = True

                except socket.error:

                    self.chan = self.open_channel()

                except Exception:

                    raise

        print "All: %d, To update: %d, Triggered update for: %s" % (all.count(), not_updated.count(), vm_ids)

QUEUES = (QUEUE_GANETI_EVENTS, QUEUE_CRON_CREDITS, QUEUE_EMAIL, QUEUE_API, QUEUE_RECONC)