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Code Issues Releases Wiki Activity

* Adding stats, charts, ...

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* Refactoring some packages also
This commit is contained in:
Adolfo Gómez 2013-02-07 08:37:54 +00:00
parent 83278c7c6b
commit 516bd7eeb0
4 changed files with 125 additions and 73 deletions
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38
server/src/uds/core/util/charts.py Normal file
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# -*- coding: utf-8 -*-
#
# Copyright (c) 2013 Virtual Cable S.L.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without modification,
# are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
# * 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.
# * Neither the name of Virtual Cable S.L. nor the names of its contributors
# may be used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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.
'''
@author: Adolfo Gómez, dkmaster at dkmon dot com
'''
# Chart types
CHART_TYPE_LINE, CHART_TYPE_AREA, CHART_TYPE_BAR = xrange(2)
def makeChart(fromWhatStat, **kwargs):
pass

73
server/src/uds/core/util/db/LockingManager.py
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'''
From django locking manager snippet at http://djangosnippets.org/snippets/833/
Author:
miohtama
'''
from django.db import models, connection
import logging
logger = logging.getLogger(__name__)
# Table locking in mysql at least is based on thread requesting it, so we should not have problems with a bit of care
class LockingManager(models.Manager):
""" Add lock/unlock functionality to manager.
Example::
class Job(models.Model):
manager = LockingManager()
counter = models.IntegerField(null=True, default=0)
@staticmethod
def do_atomic_update(job_id)
''' Updates job integer, keeping it below 5 '''
try:
# Ensure only one HTTP request can do this update at once.
Job.objects.lock()
job = Job.object.get(id=job_id)
# If we don't lock the tables two simultanous
# requests might both increase the counter
# going over 5
if job.counter < 5:
job.counter += 1
job.save()
finally:
Job.objects.unlock()
"""
def lock(self):
""" Lock table.
Locks the object model table so that atomic update is possible.
Simulatenous database access request pend until the lock is unlock()'ed.
Note: If you need to lock multiple tables, you need to do lock them
all in one SQL clause and this function is not enough. To avoid
dead lock, all tables must be locked in the same order.
See http://dev.mysql.com/doc/refman/5.0/en/lock-tables.html
"""
con = connection
cursor = con.cursor()
table = self.model._meta.db_table
#logger.debug("Locking table %s" % table)
cursor.execute("LOCK TABLES %s WRITE" % table)
row = cursor.fetchone()
return row
def unlock(self):
""" Unlock the table. """
#logger.debug("Unlocked tables")
con = connection
cursor = con.cursor()
#table = self.model._meta.db_table
cursor.execute("UNLOCK TABLES")
row = cursor.fetchone()
return row

32
server/src/uds/core/util/stats/__init__.py Normal file
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# -*- coding: utf-8 -*-
#
# Copyright (c) 2013 Virtual Cable S.L.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without modification,
# are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
# * 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.
# * Neither the name of Virtual Cable S.L. nor the names of its contributors
# may be used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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.
'''
@author: Adolfo Gómez, dkmaster at dkmon dot com
'''
import counters

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server/src/uds/core/util/stats/counters.py Normal file
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# -*- coding: utf-8 -*-
#
# Copyright (c) 2013 Virtual Cable S.L.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without modification,
# are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
# * 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.
# * Neither the name of Virtual Cable S.L. nor the names of its contributors
# may be used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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.
'''
@author: Adolfo Gómez, dkmaster at dkmon dot com
'''
from uds.core.managers import statsManager
import logging
logger = logging.getLogger(__name__)
# Posible counters, note that not all are used by every posible type
# FIRST_COUNTER_TYPE, LAST_COUNTER_TYPE are just a placeholder for sanity checks
(
FIRST_COUNTER_TYPE,
CT_LOAD, CT_STORAGE, CT_ASSIGNED,CT_CACHE1, CT_CACHE2, CT_INUSE, CT_ERROR,
LAST_COUNTER_TYPE
) = xrange(9)
def addCounter(toObject, counterType, counterValue, stamp = None):
if counterType <= FIRST_COUNTER_TYPE or counterType >= LAST_COUNTER_TYPE:
logger.error('Counter type is not valid')
return False
return statsManager().addCounter(toObject, counterType, counterValue, stamp)