Commit 7cb6bce6 by Őry Máté

Merge branch 'master' into releases

parents e84c01cf f5608fb2
......@@ -5,7 +5,7 @@ jsfiles += one/static/script/util.min.js
jsfiles += one/static/script/store.min.js
cssfiles += one/static/style/style.css
default: migrate generatestatic collectstatic mo setbranch restart
default: migrate generatestatic collectstatic mo restart
pulldef: pull default
pull:
......@@ -23,10 +23,6 @@ generatestatic: $(jsfiles) $(cssfiles)
collectstatic:
./manage.py collectstatic --noinput
setbranch:
sed -i cloud/local_settings.py -e '/RELEASE=/d' || true
echo "RELEASE='`git rev-parse --abbrev-ref HEAD`'" >>cloud/local_settings.py
mo:
for i in */locale/*/*/*.po; do echo -ne "$$i:\t"; msgfmt --statistics $$i;done
for i in */; do cd $$i; ls locale &>/dev/null && ../manage.py compilemessages || true; cd ..; done
......
from cloud.settings import DEBUG, STAT_DEBUG, RELEASE
from django.core.cache import cache
import subprocess
import json
import subprocess
from django.conf import settings
from django.core.cache import cache
def process_debug(req):
return {'DEBUG': DEBUG}
return {'DEBUG': settings.DEBUG}
def process_stat(req):
if STAT_DEBUG:
if settings.STAT_DEBUG:
stat = {
'CPU': {
'USED_CPU': 10,
......@@ -23,11 +24,11 @@ def process_stat(req):
else:
stat = cache.get('cloud_stat')
return {
'STAT_DEBUG': STAT_DEBUG,
'STAT_DEBUG': settings.STAT_DEBUG,
'cloud_stat': stat,
}
def process_release(req):
return {
'release': RELEASE,
'release': settings.RELEASE,
}
# Django settings for cloud project.
# coding=utf8
# Django base settings for cloud project.
import os
import subprocess
DEBUG = True
TEMPLATE_DEBUG = DEBUG
STAT_DEBUG = True
from django.core.exceptions import ImproperlyConfigured
def get_env_variable(var_name, default=None):
""" Get the environment variable or return exception/default """
try:
return os.environ[var_name]
except KeyError:
if default is None:
error_msg = "Set the %s environment variable" % var_name
raise ImproperlyConfigured(error_msg)
else:
return default
DEBUG = False
TEMPLATE_DEBUG = False
STAT_DEBUG = False
ADMINS = (
('IK', 'cloud@cloud.ik.bme.hu'),
......@@ -13,16 +30,12 @@ MANAGERS = ADMINS
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.mysql', # Add 'postgresql_psycopg2',
# 'mysql', 'sqlite3' or 'oracle'.
'NAME': 'webadmin', # Or path to database file if
# using sqlite3.
'USER': 'webadmin', # Not used with sqlite3.
'PASSWORD': 'asjklddfjklqjf', # Not used with sqlite3.
'HOST': '', # Set to empty string for localhost.
# Not used with sqlite3.
'PORT': '', # Set to empty string for default.
# Not used with sqlite3.
'ENGINE': 'django.db.backends.mysql',
'NAME': get_env_variable('DJANGO_DB_NAME', 'webadmin'),
'USER': get_env_variable('DJANGO_DB_USER', 'webadmin'),
'PASSWORD': get_env_variable('DJANGO_DB_PASSWORD'),
'HOST': get_env_variable('DJANGO_DB_HOST', ''),
'PORT': get_env_variable('DJANGO_DB_PORT', ''),
}
}
......@@ -82,17 +95,17 @@ STATICFILES_DIRS = (
STATICFILES_FINDERS = (
'django.contrib.staticfiles.finders.FileSystemFinder',
'django.contrib.staticfiles.finders.AppDirectoriesFinder',
# 'django.contrib.staticfiles.finders.DefaultStorageFinder',
# 'django.contrib.staticfiles.finders.DefaultStorageFinder',
)
# Make this unique, and don't share it with anybody.
SECRET_KEY = 'sx%4b1oa2)mn%##6+e1+25g@r8ht(cqk(nko^fr66w&26f22ba'
SECRET_KEY = get_env_variable('DJANGO_SECRET_KEY')
# List of callables that know how to import templates from various sources.
TEMPLATE_LOADERS = (
'django.template.loaders.filesystem.Loader',
'django.template.loaders.app_directories.Loader',
# 'django.template.loaders.eggs.Loader',
# 'django.template.loaders.eggs.Loader',
)
MIDDLEWARE_CLASSES = (
......@@ -125,8 +138,8 @@ TEMPLATE_CONTEXT_PROCESSORS = (
)
TEMPLATE_DIRS = (
# Put strings here, like "/home/html/django_templates" or "C:/www/django/templates".
# Always use forward slashes, even on Windows.
# Put strings here, like "/home/html/django_templates" or
# "C:/www/django/templates". Always use forward slashes, even on Windows.
# Don't forget to use absolute paths, not relative paths.
)
......@@ -154,7 +167,7 @@ INSTALLED_APPS = (
# the site admins on every HTTP 500 error when DEBUG=False.
# See http://docs.djangoproject.com/en/dev/topics/logging for
# more details on how to customize your logging configuration.
from logging.handlers import SysLogHandler
# from logging.handlers import SysLogHandler
LOGGING = {
'version': 1,
......@@ -170,8 +183,8 @@ LOGGING = {
'filters': ['require_debug_false'],
'class': 'django.utils.log.AdminEmailHandler'
},
'syslog':{
'level':'WARNING',
'syslog': {
'level': 'WARNING',
'class': 'logging.handlers.SysLogHandler',
'address': '/dev/log',
},
......@@ -189,12 +202,18 @@ LOGGING = {
},
}
}
LOGIN_URL="/login"
LOGIN_URL = "/login"
AUTH_PROFILE_MODULE = 'school.Person'
import djcelery
djcelery.setup_loader()
BROKER_URL = 'amqp://nyuszi:teszt@localhost:5672/django'
CELERY_CACHE_BACKEND = "default"
CELERY_RESULT_BACKEND = "amqp"
CELERY_TASK_RESULT_EXPIRES = 3600
BROKER_URL = get_env_variable(
'DJANGO_BROKER_URL', 'amqp://nyuszi:teszt@localhost:5672/django')
CELERY_ROUTES = {
'firewall.tasks.ReloadTask': {'queue': 'local'},
'firewall.tasks.reload_dns_task': {'queue': 'dns'},
......@@ -203,7 +222,14 @@ CELERY_ROUTES = {
'firewall.tasks.reload_blacklist_task': {'queue': 'firewall'},
'firewall.tasks.Periodic': {'queue': 'local'},
'one.tasks.SendMailTask': {'queue': 'local'},
'one.tasks.UpdateInstanceStateTask': {'queue': 'local'}
'one.tasks.UpdateInstanceStateTask': {'queue': 'local'},
'one.tasks.UpdateDiskTask': {'queue': 'opennebula'},
'one.tasks.UpdateNetworkTask': {'queue': 'opennebula'},
'one.tasks.ChangeInstanceStateTask': {'queue': 'opennebula'},
'one.tasks.SaveAsTask': {'queue': 'opennebula'},
'one.tasks.CreateInstanceTask': {'queue': 'opennebula'},
'one.tasks.DeleteInstanceTask': {'queue': 'opennebula'},
}
CACHES = {
......@@ -214,7 +240,7 @@ CACHES = {
}
store_settings = {
STORE_SETTINGS = {
"basic_auth": "True",
"verify_ssl": "False",
"ssl_auth": "False",
......@@ -226,7 +252,7 @@ store_settings = {
"store_public": "store.ik.bme.hu",
}
firewall_settings = {
FIREWALL_SETTINGS = {
"default_vlangroup": "publikus",
"reload_sleep": "10",
"dns_hostname": "dns1.ik.bme.hu",
......@@ -234,14 +260,12 @@ firewall_settings = {
"dns_ip": "152.66.243.60",
"dns_ttl": "300",
}
EMAIL_HOST='152.66.243.92' # giccero ipv4
CLOUD_URL='https://cloud.ik.bme.hu/'
RELEASE='master'
try:
from cloud.local_settings import *
except:
pass
SITE_NAME = "IK Cloud"
DEFAULT_FROM_EMAIL = "noreply@cloud.ik.bme.hu"
DELETE_VM = False
EMAIL_HOST = '152.66.243.92' # giccero ipv4
CLOUD_URL = 'https://cloud.ik.bme.hu/'
RELEASE = subprocess.check_output(
['git', 'rev-parse', '--symbolic-full-name', '--abbrev-ref', 'HEAD'])
# vim: et sw=4 ai fenc=utf8 smarttab :
# coding=utf8
# Django development settings for cloud project.
from .base import *
DEBUG = True
TEMPLATE_DEBUG = DEBUG
EMAIL_HOST = "localhost"
EMAIL_PORT = 1025
ADMINS = (
('Ory, Mate', 'orymate@localhost'),
)
MANAGERS = (
('Ory Mate', 'maat@localhost'),
)
INSTALLED_APPS += ("debug_toolbar", )
MIDDLEWARE_CLASSES += ("debug_toolbar.middleware.DebugToolbarMiddleware", )
# coding=utf8
# Django production settings for cloud project.
from .base import *
DEBUG = False
TEMPLATE_DEBUG = DEBUG
from django.contrib import auth
from firewall import models
import os
from cloud.settings import firewall_settings as settings
import django.conf
import subprocess
import re
......@@ -10,6 +11,7 @@ from datetime import datetime, timedelta
from django.db.models import Q
settings = django.conf.settings.FIREWALL_SETTINGS
class Firewall:
IPV6=False
RULES = None
......
......@@ -7,11 +7,12 @@ from django.utils.translation import ugettext_lazy as _
from firewall.fields import *
from south.modelsinspector import add_introspection_rules
from django.core.validators import MinValueValidator, MaxValueValidator
from cloud.settings import firewall_settings as settings
import django.conf
from django.db.models.signals import post_save
import re
import random
settings = django.conf.settings.FIREWALL_SETTINGS
class Rule(models.Model):
CHOICES_type = (('host', 'host'), ('firewall', 'firewall'),
('vlan', 'vlan'))
......
......@@ -4,7 +4,9 @@ from django.core.cache import cache
import os
import time
from firewall.fw import *
from cloud.settings import firewall_settings as settings
import django.conf
settings = django.conf.settings.FIREWALL_SETTINGS
@celery.task
def reload_dns_task(data):
......
from django.shortcuts import render_to_response
from django.http import HttpResponse
from firewall.models import *
from firewall.fw import *
from django.views.decorators.csrf import csrf_exempt
from django.views.decorators.http import require_POST
from django.db import IntegrityError
from tasks import *
from celery.task.control import inspect
from django.utils.translation import ugettext_lazy as _
from django.template.loader import render_to_string
from cloud.settings import CLOUD_URL as url
from django.utils import translation
import re
import base64
import datetime
import json
import re
import sys
import datetime
from django.conf import settings
from django.db import IntegrityError
from django.http import HttpResponse
from django.shortcuts import render_to_response
from django.template.loader import render_to_string
from django.utils import translation
from django.utils.timezone import utc
from django.utils.translation import ugettext_lazy as _
from django.views.decorators.csrf import csrf_exempt
from django.views.decorators.http import require_POST
from celery.task.control import inspect
from tasks import *
from firewall.fw import *
from firewall.models import *
from one.tasks import SendMailTask
def reload_firewall(request):
......@@ -52,7 +53,11 @@ def firewall_api(request):
user = obj.host.owner
lang = user.person_set.all()[0].language
translation.activate(lang)
msg = render_to_string('mails/notification-ban-now.txt', { 'user': user, 'bl': obj, 'instance:': obj.host.instance_set.get(), 'url': url} )
msg = render_to_string('mails/notification-ban-now.txt',
{ 'user': user,
'bl': obj,
'instance:': obj.host.instance_set.get(),
'url': settings.CLOUD_URL} )
SendMailTask.delay(to=obj.host.owner.email, subject='[IK Cloud] %s' % obj.host.instance_set.get().name, msg=msg, sender=u'cloud@ik.bme.hu')
except (Host.DoesNotExist, ValidationError, IntegrityError, AttributeError):
pass
......
#!/usr/bin/env python
import subprocess
from celery import Celery, task
import time, re
import socket
import sys
import tempfile, os, stat, re, base64, struct, logging
from celery.contrib import rdb
BROKER_URL = 'amqp://nyuszi:teszt@localhost:5672/django'
try:
from local_settings import *
except:
pass
celery = Celery('tasks', broker=BROKER_URL, backend=BROKER_URL)
celery.conf.update(
CELERY_TASK_RESULT_EXPIRES=3600,
)
def update_vm(one_id, template):
out = ""
with tempfile.NamedTemporaryFile(delete=False) as f:
os.chmod(f.name, stat.S_IRUSR|stat.S_IWUSR|stat.S_IRGRP|stat.S_IROTH)
tpl = u'''
<COMPUTE>
<ID>%(id)d</ID>
%(template)s
</COMPUTE>''' % {
"id": one_id,
"template": template
}
f.write(tpl)
f.close()
proc = subprocess.Popen(["/opt/occi.sh", "compute", "update",
f.name], stdout=subprocess.PIPE)
try:
(out, err) = proc.communicate()
except:
pass
os.unlink(f.name)
@task(name="one.tasks.CreateInstanceTask")
def t(name, instance_type, disk_id, network_id, ctx):
out = ''
f2 = tempfile.NamedTemporaryFile(delete=False)
f2.close()
with tempfile.NamedTemporaryFile(delete=False) as f:
os.chmod(f.name, stat.S_IRUSR|stat.S_IWUSR|stat.S_IRGRP|stat.S_IROTH)
tpl = u"""
<COMPUTE>
<NAME>%(name)s</NAME>
<INSTANCE_TYPE href="http://www.opennebula.org/instance_type/%(instance)s"/>
<DISK>
<STORAGE href="http://www.opennebula.org/storage/%(disk)d"/>
</DISK>
<NIC>
<NETWORK href="http://www.opennebula.org/network/%(net)d"/>
</NIC>
<CONTEXT>
%(context)s
</CONTEXT>
</COMPUTE>""" % {
"name": name,
"instance": instance_type,
"disk": disk_id,
"net": network_id,
"context": ctx,
}
f.write(tpl)
f.close()
proc = subprocess.Popen(["/opt/occi.sh compute creatE %s > %s" %
( f.name, f2.name )], shell=True)
try:
proc.communicate()
except:
pass
with open(f2.name, 'r') as f3:
out = f3.read()
os.unlink(f.name)
os.unlink(f2.name)
from xml.dom.minidom import parse, parseString
try:
x = parseString(out)
return {
'one_id': int(x.getElementsByTagName("ID")[0].childNodes[0].nodeValue),
'interfaces': [
{
'ip': x.getElementsByTagName("IP")[0].childNodes[0].nodeValue,
'mac': x.getElementsByTagName("MAC")[0].childNodes[0].nodeValue,
},
],
}
except:
pass
@task(name="one.tasks.ChangeInstanceStateTask")
def t(one_id, new_state):
update_vm(one_id, '<STATE>%s</STATE>' % (new_state, ))
@task(name="one.tasks.SaveAsTask")
def t(one_id, new_img):
update_vm(one_id, '<DISK id="0"><SAVE_AS name="%s"/></DISK>' % new_img)
@task(name="one.tasks.UpdateDiskTask")
def t():
f = tempfile.NamedTemporaryFile(delete=False)
f.close()
out=''
proc = subprocess.Popen(["/opt/occi.sh storage list > %s" % f.name],
shell=True)
try:
(out, err) = proc.communicate()
except:
pass
from xml.dom.minidom import parse, parseString
try:
with open(f.name, 'r') as f2:
out = f2.read()
x = parseString(out)
return [ {
'id': int(d.getAttributeNode('href').nodeValue.split('/')[-1]),
'name': d.getAttributeNode('name').nodeValue,
} for d in x.getElementsByTagName("STORAGE")
]
except:
pass
os.unlink(f)
@task(name="one.tasks.UpdateNetworkTask")
def t():
f = tempfile.NamedTemporaryFile(delete=False)
f.close()
out=''
proc = subprocess.Popen(["/opt/occi.sh network list > %s" % f.name],
shell=True)
try:
(out, err) = proc.communicate()
except:
pass
from xml.dom.minidom import parse, parseString
try:
with open(f.name, 'r') as f2:
out = f2.read()
x = parseString(out)
return [ {
'id': int(d.getAttributeNode('href').nodeValue.split('/')[-1]),
'name': d.getAttributeNode('name').nodeValue,
} for d in x.getElementsByTagName("NETWORK")
]
except:
pass
os.unlink(f)
@task(name="one.tasks.DeleteInstanceTask")
def t(one_id):
proc = subprocess.Popen(["/opt/occi.sh", "compute", "delete",
"%d" % one_id], stdout=subprocess.PIPE)
try:
(out, err) = proc.communicate()
except:
pass
def update_state(one_id):
"""Get and update VM state from OpenNebula."""
proc = subprocess.Popen(["/opt/occi.sh", "compute", "show",
"%d" % one_id], stdout=subprocess.PIPE)
(out, err) = proc.communicate()
state = 'UNKNOWN'
try:
if(len(sys.argv) == 3 and sys.argv[2] == 'UNKNOWN'):
raise Exception(':(')
from xml.dom.minidom import parse, parseString
x = parseString(out)
state = x.getElementsByTagName("STATE")[0].childNodes[0].nodeValue
except:
state = 'UNKNOWN'
print state
celery.send_task('one.tasks.UpdateInstanceStateTask', [one_id, state],
queue='local')
if __name__ == "__main__":
update_state(int(sys.argv[1]))
#!/usr/bin/env python
from celery import Celery, task
import subprocess
import time, re
import socket
import sys
BROKER_URL = 'amqp://nyuszi:teszt@localhost:5672/django'
try:
from local_settings import *
except:
pass
CELERY_CREATE_MISSING_QUEUES=True
celery = Celery('tasks', broker=BROKER_URL)
def main(argv):
celery.send_task('one.tasks.UpdateInstanceStateTask', [ int(sys.argv[1]),
], queue='local')
if __name__ == "__main__":
main(sys.argv)
......@@ -5,5 +5,8 @@ stop on runlevel [!2345]
respawn
respawn limit 30 30
env DJANGO_SETTINGS_MODULE=cloud.settings.dev
env DJANGO_DB_PASSWORD=asjklddfjklqjf
env DJANGO_SECRET_KEY=asjklddfjklqjfasjklddfjklqjfasjklddfjklqjf
exec sudo -u cloud /opt/webadmin/cloud/manage.py runserver 0.0.0.0:8080
......@@ -43,7 +43,7 @@ cd /opt/webadmin/
mv cloud cloud.$(date +%s) || true
git clone 'ssh://git@giccero.cloud.ik.bme.hu/cloud'
git clone 'git@git.cloud.ik.bme.hu:circle/cloud.git'
cd cloud
source miscellaneous/devenv/nextinit.sh
......
#!/bin/bash
sudo pip install django_extensions
sudo pip install django-debug-toolbar
for i in cloudstore toplist django
do
sudo stop $i || true
done
sudo apt-get install rabbitmq-server gettext memcached
sudo tee /etc/sudoers.d/djangokeep <<A
Defaults env_keep += DJANGO_DB_PASSWORD
Defaults env_keep += DJANGO_SECRET_KEY
Defaults env_keep += DJANGO_SETTINGS_MODULE
A
sudo chmod 0440 /etc/sudoers.d/djangokeep
sudo apt-get install rabbitmq-server gettext memcached nodejs
sudo rabbitmqctl delete_user guest || true
sudo rabbitmqctl add_user nyuszi teszt || true
sudo rabbitmqctl add_vhost django || true
......@@ -14,6 +22,9 @@ sudo rabbitmqctl set_permissions -p django nyuszi '.*' '.*' '.*' || true
sudo pip install python-memcached
sudo npm install -g less
sudo npm install -g uglify-js@1
sudo cp /opt/webadmin/cloud/miscellaneous/devenv/boot_url.py /opt/
#Set up store server
......
\documentclass[12pt,a4paper]{article}
\title{Harnessing Wasted Computing Power for Scientific Computing}
\author{S\'andor Guba, M\'at\'e \H{O}ry and Imre Szeber\'enyi\\
Budapest University of Technology and Economics, %\\
%Magyar Tud\'osok k\"or\'utja 2, H-1117 Budapest,
Hungary}
\date{\empty}
\begin{document}
\maketitle
Nowadays more and more general purpose workstations installed in a student
laboratory have built in multi-core CPU and graphics card providing significant
computing power. In most cases the utilization of these resources is low, and
limited to lecture hours. The concept of utility computing plays an important
role in nowadays technological development. As part of utility computing, cloud
computing offers greater flexibility and responsiveness to ICT users at lower
cost.
In  this paper, we introduce a cloud management system which enables the
simultaneous use of both dedicated resources and opportunistic environment. All
the free workstations (powered or not) are automatically added to a resource
pool, and can be used like ordinary cloud resources. Researchers can launch
various virtualized software appliances. Our solution leverages the advantages
of HTCondor and OpenNebula systems.
Modern graphics processing units (GPUs) with many-core architectures have
emerged as general-purpose parallel computing platforms that can dramatically
accelerate  scientific applications used for various simulations. Our business
model harnesses computing power of GPUs as well, using the needed amount of
unused machines. This makes the infrastructure flexible and power efficient.
Our pilot infrastructure consist of a high performance cluster and 28
workstations with dual-core CPUs and dedicated graphics cards. Altogether we
can use 10,752 CUDA cores through the network.
\end{document}
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\def\squareforqed{\hbox{\rlap{$\sqcap$}$\sqcup$}}
\def\qed{\ifmmode\squareforqed\else{\unskip\nobreak\hfil
\penalty50\hskip1em\null\nobreak\hfil\squareforqed
\parfillskip=0pt\finalhyphendemerits=0\endgraf}\fi}
\def\getsto{\mathrel{\mathchoice {\vcenter{\offinterlineskip
\halign{\hfil
$\displaystyle##$\hfil\cr\gets\cr\to\cr}}}
{\vcenter{\offinterlineskip\halign{\hfil$\textstyle##$\hfil\cr\gets
\cr\to\cr}}}
{\vcenter{\offinterlineskip\halign{\hfil$\scriptstyle##$\hfil\cr\gets
\cr\to\cr}}}
{\vcenter{\offinterlineskip\halign{\hfil$\scriptscriptstyle##$\hfil\cr
\gets\cr\to\cr}}}}}
\def\lid{\mathrel{\mathchoice {\vcenter{\offinterlineskip\halign{\hfil
$\displaystyle##$\hfil\cr<\cr\noalign{\vskip1.2pt}=\cr}}}
{\vcenter{\offinterlineskip\halign{\hfil$\textstyle##$\hfil\cr<\cr
\noalign{\vskip1.2pt}=\cr}}}
{\vcenter{\offinterlineskip\halign{\hfil$\scriptstyle##$\hfil\cr<\cr
\noalign{\vskip1pt}=\cr}}}
{\vcenter{\offinterlineskip\halign{\hfil$\scriptscriptstyle##$\hfil\cr
<\cr
\noalign{\vskip0.9pt}=\cr}}}}}
\def\gid{\mathrel{\mathchoice {\vcenter{\offinterlineskip\halign{\hfil
$\displaystyle##$\hfil\cr>\cr\noalign{\vskip1.2pt}=\cr}}}
{\vcenter{\offinterlineskip\halign{\hfil$\textstyle##$\hfil\cr>\cr
\noalign{\vskip1.2pt}=\cr}}}
{\vcenter{\offinterlineskip\halign{\hfil$\scriptstyle##$\hfil\cr>\cr
\noalign{\vskip1pt}=\cr}}}
{\vcenter{\offinterlineskip\halign{\hfil$\scriptscriptstyle##$\hfil\cr
>\cr
\noalign{\vskip0.9pt}=\cr}}}}}
\def\grole{\mathrel{\mathchoice {\vcenter{\offinterlineskip
\halign{\hfil
$\displaystyle##$\hfil\cr>\cr\noalign{\vskip-1pt}<\cr}}}
{\vcenter{\offinterlineskip\halign{\hfil$\textstyle##$\hfil\cr
>\cr\noalign{\vskip-1pt}<\cr}}}
{\vcenter{\offinterlineskip\halign{\hfil$\scriptstyle##$\hfil\cr
>\cr\noalign{\vskip-0.8pt}<\cr}}}
{\vcenter{\offinterlineskip\halign{\hfil$\scriptscriptstyle##$\hfil\cr
>\cr\noalign{\vskip-0.3pt}<\cr}}}}}
\def\bbbr{{\rm I\!R}} %reelle Zahlen
\def\bbbm{{\rm I\!M}}
\def\bbbn{{\rm I\!N}} %natuerliche Zahlen
\def\bbbf{{\rm I\!F}}
\def\bbbh{{\rm I\!H}}
\def\bbbk{{\rm I\!K}}
\def\bbbp{{\rm I\!P}}
\def\bbbone{{\mathchoice {\rm 1\mskip-4mu l} {\rm 1\mskip-4mu l}
{\rm 1\mskip-4.5mu l} {\rm 1\mskip-5mu l}}}
\def\bbbc{{\mathchoice {\setbox0=\hbox{$\displaystyle\rm C$}\hbox{\hbox
to0pt{\kern0.4\wd0\vrule height0.9\ht0\hss}\box0}}
{\setbox0=\hbox{$\textstyle\rm C$}\hbox{\hbox
to0pt{\kern0.4\wd0\vrule height0.9\ht0\hss}\box0}}
{\setbox0=\hbox{$\scriptstyle\rm C$}\hbox{\hbox
to0pt{\kern0.4\wd0\vrule height0.9\ht0\hss}\box0}}
{\setbox0=\hbox{$\scriptscriptstyle\rm C$}\hbox{\hbox
to0pt{\kern0.4\wd0\vrule height0.9\ht0\hss}\box0}}}}
\def\bbbq{{\mathchoice {\setbox0=\hbox{$\displaystyle\rm
Q$}\hbox{\raise
0.15\ht0\hbox to0pt{\kern0.4\wd0\vrule height0.8\ht0\hss}\box0}}
{\setbox0=\hbox{$\textstyle\rm Q$}\hbox{\raise
0.15\ht0\hbox to0pt{\kern0.4\wd0\vrule height0.8\ht0\hss}\box0}}
{\setbox0=\hbox{$\scriptstyle\rm Q$}\hbox{\raise
0.15\ht0\hbox to0pt{\kern0.4\wd0\vrule height0.7\ht0\hss}\box0}}
{\setbox0=\hbox{$\scriptscriptstyle\rm Q$}\hbox{\raise
0.15\ht0\hbox to0pt{\kern0.4\wd0\vrule height0.7\ht0\hss}\box0}}}}
\def\bbbt{{\mathchoice {\setbox0=\hbox{$\displaystyle\rm
T$}\hbox{\hbox to0pt{\kern0.3\wd0\vrule height0.9\ht0\hss}\box0}}
{\setbox0=\hbox{$\textstyle\rm T$}\hbox{\hbox
to0pt{\kern0.3\wd0\vrule height0.9\ht0\hss}\box0}}
{\setbox0=\hbox{$\scriptstyle\rm T$}\hbox{\hbox
to0pt{\kern0.3\wd0\vrule height0.9\ht0\hss}\box0}}
{\setbox0=\hbox{$\scriptscriptstyle\rm T$}\hbox{\hbox
to0pt{\kern0.3\wd0\vrule height0.9\ht0\hss}\box0}}}}
\def\bbbs{{\mathchoice
{\setbox0=\hbox{$\displaystyle \rm S$}\hbox{\raise0.5\ht0\hbox
to0pt{\kern0.35\wd0\vrule height0.45\ht0\hss}\hbox
to0pt{\kern0.55\wd0\vrule height0.5\ht0\hss}\box0}}
{\setbox0=\hbox{$\textstyle \rm S$}\hbox{\raise0.5\ht0\hbox
to0pt{\kern0.35\wd0\vrule height0.45\ht0\hss}\hbox
to0pt{\kern0.55\wd0\vrule height0.5\ht0\hss}\box0}}
{\setbox0=\hbox{$\scriptstyle \rm S$}\hbox{\raise0.5\ht0\hbox
to0pt{\kern0.35\wd0\vrule height0.45\ht0\hss}\raise0.05\ht0\hbox
to0pt{\kern0.5\wd0\vrule height0.45\ht0\hss}\box0}}
{\setbox0=\hbox{$\scriptscriptstyle\rm S$}\hbox{\raise0.5\ht0\hbox
to0pt{\kern0.4\wd0\vrule height0.45\ht0\hss}\raise0.05\ht0\hbox
to0pt{\kern0.55\wd0\vrule height0.45\ht0\hss}\box0}}}}
\def\bbbz{{\mathchoice {\hbox{$\mathsf\textstyle Z\kern-0.4em Z$}}
{\hbox{$\mathsf\textstyle Z\kern-0.4em Z$}}
{\hbox{$\mathsf\scriptstyle Z\kern-0.3em Z$}}
{\hbox{$\mathsf\scriptscriptstyle Z\kern-0.2em Z$}}}}
\let\ts\,
\setlength\leftmargini {17\p@}
\setlength\leftmargin {\leftmargini}
\setlength\leftmarginii {\leftmargini}
\setlength\leftmarginiii {\leftmargini}
\setlength\leftmarginiv {\leftmargini}
\setlength \labelsep {.5em}
\setlength \labelwidth{\leftmargini}
\addtolength\labelwidth{-\labelsep}
\def\@listI{\leftmargin\leftmargini
\parsep 0\p@ \@plus1\p@ \@minus\p@
\topsep 8\p@ \@plus2\p@ \@minus4\p@
\itemsep0\p@}
\let\@listi\@listI
\@listi
\def\@listii {\leftmargin\leftmarginii
\labelwidth\leftmarginii
\advance\labelwidth-\labelsep
\topsep 0\p@ \@plus2\p@ \@minus\p@}
\def\@listiii{\leftmargin\leftmarginiii
\labelwidth\leftmarginiii
\advance\labelwidth-\labelsep
\topsep 0\p@ \@plus\p@\@minus\p@
\parsep \z@
\partopsep \p@ \@plus\z@ \@minus\p@}
\renewcommand\labelitemi{\normalfont\bfseries --}
\renewcommand\labelitemii{$\m@th\bullet$}
\setlength\arraycolsep{1.4\p@}
\setlength\tabcolsep{1.4\p@}
\def\tableofcontents{\chapter*{\contentsname\@mkboth{{\contentsname}}%
{{\contentsname}}}
\def\authcount##1{\setcounter{auco}{##1}\setcounter{@auth}{1}}
\def\lastand{\ifnum\value{auco}=2\relax
\unskip{} \andname\
\else
\unskip \lastandname\
\fi}%
\def\and{\stepcounter{@auth}\relax
\ifnum\value{@auth}=\value{auco}%
\lastand
\else
\unskip,
\fi}%
\@starttoc{toc}\if@restonecol\twocolumn\fi}
\def\l@part#1#2{\addpenalty{\@secpenalty}%
\addvspace{2em plus\p@}% % space above part line
\begingroup
\parindent \z@
\rightskip \z@ plus 5em
\hrule\vskip5pt
\large % same size as for a contribution heading
\bfseries\boldmath % set line in boldface
\leavevmode % TeX command to enter horizontal mode.
#1\par
\vskip5pt
\hrule
\vskip1pt
\nobreak % Never break after part entry
\endgroup}
\def\@dotsep{2}
\let\phantomsection=\relax
\def\hyperhrefextend{\ifx\hyper@anchor\@undefined\else
{}\fi}
\def\addnumcontentsmark#1#2#3{%
\addtocontents{#1}{\protect\contentsline{#2}{\protect\numberline
{\thechapter}#3}{\thepage}\hyperhrefextend}}%
\def\addcontentsmark#1#2#3{%
\addtocontents{#1}{\protect\contentsline{#2}{#3}{\thepage}\hyperhrefextend}}%
\def\addcontentsmarkwop#1#2#3{%
\addtocontents{#1}{\protect\contentsline{#2}{#3}{0}\hyperhrefextend}}%
\def\@adcmk[#1]{\ifcase #1 \or
\def\@gtempa{\addnumcontentsmark}%
\or \def\@gtempa{\addcontentsmark}%
\or \def\@gtempa{\addcontentsmarkwop}%
\fi\@gtempa{toc}{chapter}%
}
\def\addtocmark{%
\phantomsection
\@ifnextchar[{\@adcmk}{\@adcmk[3]}%
}
\def\l@chapter#1#2{\addpenalty{-\@highpenalty}
\vskip 1.0em plus 1pt \@tempdima 1.5em \begingroup
\parindent \z@ \rightskip \@tocrmarg
\advance\rightskip by 0pt plus 2cm
\parfillskip -\rightskip \pretolerance=10000
\leavevmode \advance\leftskip\@tempdima \hskip -\leftskip
{\large\bfseries\boldmath#1}\ifx0#2\hfil\null
\else
\nobreak
\leaders\hbox{$\m@th \mkern \@dotsep mu.\mkern
\@dotsep mu$}\hfill
\nobreak\hbox to\@pnumwidth{\hss #2}%
\fi\par
\penalty\@highpenalty \endgroup}
\def\l@title#1#2{\addpenalty{-\@highpenalty}
\addvspace{8pt plus 1pt}
\@tempdima \z@
\begingroup
\parindent \z@ \rightskip \@tocrmarg
\advance\rightskip by 0pt plus 2cm
\parfillskip -\rightskip \pretolerance=10000
\leavevmode \advance\leftskip\@tempdima \hskip -\leftskip
#1\nobreak
\leaders\hbox{$\m@th \mkern \@dotsep mu.\mkern
\@dotsep mu$}\hfill
\nobreak\hbox to\@pnumwidth{\hss #2}\par
\penalty\@highpenalty \endgroup}
\def\l@author#1#2{\addpenalty{\@highpenalty}
\@tempdima=15\p@ %\z@
\begingroup
\parindent \z@ \rightskip \@tocrmarg
\advance\rightskip by 0pt plus 2cm
\pretolerance=10000
\leavevmode \advance\leftskip\@tempdima %\hskip -\leftskip
\textit{#1}\par
\penalty\@highpenalty \endgroup}
\setcounter{tocdepth}{0}
\newdimen\tocchpnum
\newdimen\tocsecnum
\newdimen\tocsectotal
\newdimen\tocsubsecnum
\newdimen\tocsubsectotal
\newdimen\tocsubsubsecnum
\newdimen\tocsubsubsectotal
\newdimen\tocparanum
\newdimen\tocparatotal
\newdimen\tocsubparanum
\tocchpnum=\z@ % no chapter numbers
\tocsecnum=15\p@ % section 88. plus 2.222pt
\tocsubsecnum=23\p@ % subsection 88.8 plus 2.222pt
\tocsubsubsecnum=27\p@ % subsubsection 88.8.8 plus 1.444pt
\tocparanum=35\p@ % paragraph 88.8.8.8 plus 1.666pt
\tocsubparanum=43\p@ % subparagraph 88.8.8.8.8 plus 1.888pt
\def\calctocindent{%
\tocsectotal=\tocchpnum
\advance\tocsectotal by\tocsecnum
\tocsubsectotal=\tocsectotal
\advance\tocsubsectotal by\tocsubsecnum
\tocsubsubsectotal=\tocsubsectotal
\advance\tocsubsubsectotal by\tocsubsubsecnum
\tocparatotal=\tocsubsubsectotal
\advance\tocparatotal by\tocparanum}
\calctocindent
\def\l@section{\@dottedtocline{1}{\tocchpnum}{\tocsecnum}}
\def\l@subsection{\@dottedtocline{2}{\tocsectotal}{\tocsubsecnum}}
\def\l@subsubsection{\@dottedtocline{3}{\tocsubsectotal}{\tocsubsubsecnum}}
\def\l@paragraph{\@dottedtocline{4}{\tocsubsubsectotal}{\tocparanum}}
\def\l@subparagraph{\@dottedtocline{5}{\tocparatotal}{\tocsubparanum}}
\def\listoffigures{\@restonecolfalse\if@twocolumn\@restonecoltrue\onecolumn
\fi\section*{\listfigurename\@mkboth{{\listfigurename}}{{\listfigurename}}}
\@starttoc{lof}\if@restonecol\twocolumn\fi}
\def\l@figure{\@dottedtocline{1}{0em}{1.5em}}
\def\listoftables{\@restonecolfalse\if@twocolumn\@restonecoltrue\onecolumn
\fi\section*{\listtablename\@mkboth{{\listtablename}}{{\listtablename}}}
\@starttoc{lot}\if@restonecol\twocolumn\fi}
\let\l@table\l@figure
\renewcommand\listoffigures{%
\section*{\listfigurename
\@mkboth{\listfigurename}{\listfigurename}}%
\@starttoc{lof}%
}
\renewcommand\listoftables{%
\section*{\listtablename
\@mkboth{\listtablename}{\listtablename}}%
\@starttoc{lot}%
}
\ifx\oribibl\undefined
\ifx\citeauthoryear\undefined
\renewenvironment{thebibliography}[1]
{\section*{\refname}
\def\@biblabel##1{##1.}
\small
\list{\@biblabel{\@arabic\c@enumiv}}%
{\settowidth\labelwidth{\@biblabel{#1}}%
\leftmargin\labelwidth
\advance\leftmargin\labelsep
\if@openbib
\advance\leftmargin\bibindent
\itemindent -\bibindent
\listparindent \itemindent
\parsep \z@
\fi
\usecounter{enumiv}%
\let\p@enumiv\@empty
\renewcommand\theenumiv{\@arabic\c@enumiv}}%
\if@openbib
\renewcommand\newblock{\par}%
\else
\renewcommand\newblock{\hskip .11em \@plus.33em \@minus.07em}%
\fi
\sloppy\clubpenalty4000\widowpenalty4000%
\sfcode`\.=\@m}
{\def\@noitemerr
{\@latex@warning{Empty `thebibliography' environment}}%
\endlist}
\def\@lbibitem[#1]#2{\item[{[#1]}\hfill]\if@filesw
{\let\protect\noexpand\immediate
\write\@auxout{\string\bibcite{#2}{#1}}}\fi\ignorespaces}
\newcount\@tempcntc
\def\@citex[#1]#2{\if@filesw\immediate\write\@auxout{\string\citation{#2}}\fi
\@tempcnta\z@\@tempcntb\m@ne\def\@citea{}\@cite{\@for\@citeb:=#2\do
{\@ifundefined
{b@\@citeb}{\@citeo\@tempcntb\m@ne\@citea\def\@citea{,}{\bfseries
?}\@warning
{Citation `\@citeb' on page \thepage \space undefined}}%
{\setbox\z@\hbox{\global\@tempcntc0\csname b@\@citeb\endcsname\relax}%
\ifnum\@tempcntc=\z@ \@citeo\@tempcntb\m@ne
\@citea\def\@citea{,}\hbox{\csname b@\@citeb\endcsname}%
\else
\advance\@tempcntb\@ne
\ifnum\@tempcntb=\@tempcntc
\else\advance\@tempcntb\m@ne\@citeo
\@tempcnta\@tempcntc\@tempcntb\@tempcntc\fi\fi}}\@citeo}{#1}}
\def\@citeo{\ifnum\@tempcnta>\@tempcntb\else
\@citea\def\@citea{,\,\hskip\z@skip}%
\ifnum\@tempcnta=\@tempcntb\the\@tempcnta\else
{\advance\@tempcnta\@ne\ifnum\@tempcnta=\@tempcntb \else
\def\@citea{--}\fi
\advance\@tempcnta\m@ne\the\@tempcnta\@citea\the\@tempcntb}\fi\fi}
\else
\renewenvironment{thebibliography}[1]
{\section*{\refname}
\small
\list{}%
{\settowidth\labelwidth{}%
\leftmargin\parindent
\itemindent=-\parindent
\labelsep=\z@
\if@openbib
\advance\leftmargin\bibindent
\itemindent -\bibindent
\listparindent \itemindent
\parsep \z@
\fi
\usecounter{enumiv}%
\let\p@enumiv\@empty
\renewcommand\theenumiv{}}%
\if@openbib
\renewcommand\newblock{\par}%
\else
\renewcommand\newblock{\hskip .11em \@plus.33em \@minus.07em}%
\fi
\sloppy\clubpenalty4000\widowpenalty4000%
\sfcode`\.=\@m}
{\def\@noitemerr
{\@latex@warning{Empty `thebibliography' environment}}%
\endlist}
\def\@cite#1{#1}%
\def\@lbibitem[#1]#2{\item[]\if@filesw
{\def\protect##1{\string ##1\space}\immediate
\write\@auxout{\string\bibcite{#2}{#1}}}\fi\ignorespaces}
\fi
\else
\@cons\@openbib@code{\noexpand\small}
\fi
\def\idxquad{\hskip 10\p@}% space that divides entry from number
\def\@idxitem{\par\hangindent 10\p@}
\def\subitem{\par\setbox0=\hbox{--\enspace}% second order
\noindent\hangindent\wd0\box0}% index entry
\def\subsubitem{\par\setbox0=\hbox{--\,--\enspace}% third
\noindent\hangindent\wd0\box0}% order index entry
\def\indexspace{\par \vskip 10\p@ plus5\p@ minus3\p@\relax}
\renewenvironment{theindex}
{\@mkboth{\indexname}{\indexname}%
\thispagestyle{empty}\parindent\z@
\parskip\z@ \@plus .3\p@\relax
\let\item\par
\def\,{\relax\ifmmode\mskip\thinmuskip
\else\hskip0.2em\ignorespaces\fi}%
\normalfont\small
\begin{multicols}{2}[\@makeschapterhead{\indexname}]%
}
{\end{multicols}}
\renewcommand\footnoterule{%
\kern-3\p@
\hrule\@width 2truecm
\kern2.6\p@}
\newdimen\fnindent
\fnindent1em
\long\def\@makefntext#1{%
\parindent \fnindent%
\leftskip \fnindent%
\noindent
\llap{\hb@xt@1em{\hss\@makefnmark\ }}\ignorespaces#1}
\long\def\@makecaption#1#2{%
\small
\vskip\abovecaptionskip
\sbox\@tempboxa{{\bfseries #1.} #2}%
\ifdim \wd\@tempboxa >\hsize
{\bfseries #1.} #2\par
\else
\global \@minipagefalse
\hb@xt@\hsize{\hfil\box\@tempboxa\hfil}%
\fi
\vskip\belowcaptionskip}
\def\fps@figure{htbp}
\def\fnum@figure{\figurename\thinspace\thefigure}
\def \@floatboxreset {%
\reset@font
\small
\@setnobreak
\@setminipage
}
\def\fps@table{htbp}
\def\fnum@table{\tablename~\thetable}
\renewenvironment{table}
{\setlength\abovecaptionskip{0\p@}%
\setlength\belowcaptionskip{10\p@}%
\@float{table}}
{\end@float}
\renewenvironment{table*}
{\setlength\abovecaptionskip{0\p@}%
\setlength\belowcaptionskip{10\p@}%
\@dblfloat{table}}
{\end@dblfloat}
\long\def\@caption#1[#2]#3{\par\addcontentsline{\csname
ext@#1\endcsname}{#1}{\protect\numberline{\csname
the#1\endcsname}{\ignorespaces #2}}\begingroup
\@parboxrestore
\@makecaption{\csname fnum@#1\endcsname}{\ignorespaces #3}\par
\endgroup}
% LaTeX does not provide a command to enter the authors institute
% addresses. The \institute command is defined here.
\newcounter{@inst}
\newcounter{@auth}
\newcounter{auco}
\newdimen\instindent
\newbox\authrun
\newtoks\authorrunning
\newtoks\tocauthor
\newbox\titrun
\newtoks\titlerunning
\newtoks\toctitle
\def\clearheadinfo{\gdef\@author{No Author Given}%
\gdef\@title{No Title Given}%
\gdef\@subtitle{}%
\gdef\@institute{No Institute Given}%
\gdef\@thanks{}%
\global\titlerunning={}\global\authorrunning={}%
\global\toctitle={}\global\tocauthor={}}
\def\institute#1{\gdef\@institute{#1}}
\def\institutename{\par
\begingroup
\parskip=\z@
\parindent=\z@
\setcounter{@inst}{1}%
\def\and{\par\stepcounter{@inst}%
\noindent$^{\the@inst}$\enspace\ignorespaces}%
\setbox0=\vbox{\def\thanks##1{}\@institute}%
\ifnum\c@@inst=1\relax
\gdef\fnnstart{0}%
\else
\xdef\fnnstart{\c@@inst}%
\setcounter{@inst}{1}%
\noindent$^{\the@inst}$\enspace
\fi
\ignorespaces
\@institute\par
\endgroup}
\def\@fnsymbol#1{\ensuremath{\ifcase#1\or\star\or{\star\star}\or
{\star\star\star}\or \dagger\or \ddagger\or
\mathchar "278\or \mathchar "27B\or \|\or **\or \dagger\dagger
\or \ddagger\ddagger \else\@ctrerr\fi}}
\def\inst#1{\unskip$^{#1}$}
\def\fnmsep{\unskip$^,$}
\def\email#1{{\tt#1}}
\AtBeginDocument{\@ifundefined{url}{\def\url#1{#1}}{}%
\@ifpackageloaded{babel}{%
\@ifundefined{extrasenglish}{}{\addto\extrasenglish{\switcht@albion}}%
\@ifundefined{extrasfrenchb}{}{\addto\extrasfrenchb{\switcht@francais}}%
\@ifundefined{extrasgerman}{}{\addto\extrasgerman{\switcht@deutsch}}%
}{\switcht@@therlang}%
\providecommand{\keywords}[1]{\par\addvspace\baselineskip
\noindent\keywordname\enspace\ignorespaces#1}%
}
\def\homedir{\~{ }}
\def\subtitle#1{\gdef\@subtitle{#1}}
\clearheadinfo
%
%%% to avoid hyperref warnings
\providecommand*{\toclevel@author}{999}
%%% to make title-entry parent of section-entries
\providecommand*{\toclevel@title}{0}
%
\renewcommand\maketitle{\newpage
\phantomsection
\refstepcounter{chapter}%
\stepcounter{section}%
\setcounter{section}{0}%
\setcounter{subsection}{0}%
\setcounter{figure}{0}
\setcounter{table}{0}
\setcounter{equation}{0}
\setcounter{footnote}{0}%
\begingroup
\parindent=\z@
\renewcommand\thefootnote{\@fnsymbol\c@footnote}%
\if@twocolumn
\ifnum \col@number=\@ne
\@maketitle
\else
\twocolumn[\@maketitle]%
\fi
\else
\newpage
\global\@topnum\z@ % Prevents figures from going at top of page.
\@maketitle
\fi
\thispagestyle{empty}\@thanks
%
\def\\{\unskip\ \ignorespaces}\def\inst##1{\unskip{}}%
\def\thanks##1{\unskip{}}\def\fnmsep{\unskip}%
\instindent=\hsize
\advance\instindent by-\headlineindent
\if!\the\toctitle!\addcontentsline{toc}{title}{\@title}\else
\addcontentsline{toc}{title}{\the\toctitle}\fi
\if@runhead
\if!\the\titlerunning!\else
\edef\@title{\the\titlerunning}%
\fi
\global\setbox\titrun=\hbox{\small\rm\unboldmath\ignorespaces\@title}%
\ifdim\wd\titrun>\instindent
\typeout{Title too long for running head. Please supply}%
\typeout{a shorter form with \string\titlerunning\space prior to
\string\maketitle}%
\global\setbox\titrun=\hbox{\small\rm
Title Suppressed Due to Excessive Length}%
\fi
\xdef\@title{\copy\titrun}%
\fi
%
\if!\the\tocauthor!\relax
{\def\and{\noexpand\protect\noexpand\and}%
\protected@xdef\toc@uthor{\@author}}%
\else
\def\\{\noexpand\protect\noexpand\newline}%
\protected@xdef\scratch{\the\tocauthor}%
\protected@xdef\toc@uthor{\scratch}%
\fi
\addtocontents{toc}{\noexpand\protect\noexpand\authcount{\the\c@auco}}%
\addcontentsline{toc}{author}{\toc@uthor}%
\if@runhead
\if!\the\authorrunning!
\value{@inst}=\value{@auth}%
\setcounter{@auth}{1}%
\else
\edef\@author{\the\authorrunning}%
\fi
\global\setbox\authrun=\hbox{\small\unboldmath\@author\unskip}%
\ifdim\wd\authrun>\instindent
\typeout{Names of authors too long for running head. Please supply}%
\typeout{a shorter form with \string\authorrunning\space prior to
\string\maketitle}%
\global\setbox\authrun=\hbox{\small\rm
Authors Suppressed Due to Excessive Length}%
\fi
\xdef\@author{\copy\authrun}%
\markboth{\@author}{\@title}%
\fi
\endgroup
\setcounter{footnote}{\fnnstart}%
\clearheadinfo}
%
\def\@maketitle{\newpage
\markboth{}{}%
\def\lastand{\ifnum\value{@inst}=2\relax
\unskip{} \andname\
\else
\unskip \lastandname\
\fi}%
\def\and{\stepcounter{@auth}\relax
\ifnum\value{@auth}=\value{@inst}%
\lastand
\else
\unskip,
\fi}%
\begin{center}%
\let\newline\\
{\Large \bfseries\boldmath
\pretolerance=10000
\@title \par}\vskip .8cm
\if!\@subtitle!\else {\large \bfseries\boldmath
\vskip -.65cm
\pretolerance=10000
\@subtitle \par}\vskip .8cm\fi
\setbox0=\vbox{\setcounter{@auth}{1}\def\and{\stepcounter{@auth}}%
\def\thanks##1{}\@author}%
\global\value{@inst}=\value{@auth}%
\global\value{auco}=\value{@auth}%
\setcounter{@auth}{1}%
{\lineskip .5em
\noindent\ignorespaces
\@author\vskip.35cm}
{\small\institutename}
\end{center}%
}
% definition of the "\spnewtheorem" command.
%
% Usage:
%
% \spnewtheorem{env_nam}{caption}[within]{cap_font}{body_font}
% or \spnewtheorem{env_nam}[numbered_like]{caption}{cap_font}{body_font}
% or \spnewtheorem*{env_nam}{caption}{cap_font}{body_font}
%
% New is "cap_font" and "body_font". It stands for
% fontdefinition of the caption and the text itself.
%
% "\spnewtheorem*" gives a theorem without number.
%
% A defined spnewthoerem environment is used as described
% by Lamport.
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\def\@thmcountersep{}
\def\@thmcounterend{.}
\def\spnewtheorem{\@ifstar{\@sthm}{\@Sthm}}
% definition of \spnewtheorem with number
\def\@spnthm#1#2{%
\@ifnextchar[{\@spxnthm{#1}{#2}}{\@spynthm{#1}{#2}}}
\def\@Sthm#1{\@ifnextchar[{\@spothm{#1}}{\@spnthm{#1}}}
\def\@spxnthm#1#2[#3]#4#5{\expandafter\@ifdefinable\csname #1\endcsname
{\@definecounter{#1}\@addtoreset{#1}{#3}%
\expandafter\xdef\csname the#1\endcsname{\expandafter\noexpand
\csname the#3\endcsname \noexpand\@thmcountersep \@thmcounter{#1}}%
\expandafter\xdef\csname #1name\endcsname{#2}%
\global\@namedef{#1}{\@spthm{#1}{\csname #1name\endcsname}{#4}{#5}}%
\global\@namedef{end#1}{\@endtheorem}}}
\def\@spynthm#1#2#3#4{\expandafter\@ifdefinable\csname #1\endcsname
{\@definecounter{#1}%
\expandafter\xdef\csname the#1\endcsname{\@thmcounter{#1}}%
\expandafter\xdef\csname #1name\endcsname{#2}%
\global\@namedef{#1}{\@spthm{#1}{\csname #1name\endcsname}{#3}{#4}}%
\global\@namedef{end#1}{\@endtheorem}}}
\def\@spothm#1[#2]#3#4#5{%
\@ifundefined{c@#2}{\@latexerr{No theorem environment `#2' defined}\@eha}%
{\expandafter\@ifdefinable\csname #1\endcsname
{\newaliascnt{#1}{#2}%
\expandafter\xdef\csname #1name\endcsname{#3}%
\global\@namedef{#1}{\@spthm{#1}{\csname #1name\endcsname}{#4}{#5}}%
\global\@namedef{end#1}{\@endtheorem}}}}
\def\@spthm#1#2#3#4{\topsep 7\p@ \@plus2\p@ \@minus4\p@
\refstepcounter{#1}%
\@ifnextchar[{\@spythm{#1}{#2}{#3}{#4}}{\@spxthm{#1}{#2}{#3}{#4}}}
\def\@spxthm#1#2#3#4{\@spbegintheorem{#2}{\csname the#1\endcsname}{#3}{#4}%
\ignorespaces}
\def\@spythm#1#2#3#4[#5]{\@spopargbegintheorem{#2}{\csname
the#1\endcsname}{#5}{#3}{#4}\ignorespaces}
\def\@spbegintheorem#1#2#3#4{\trivlist
\item[\hskip\labelsep{#3#1\ #2\@thmcounterend}]#4}
\def\@spopargbegintheorem#1#2#3#4#5{\trivlist
\item[\hskip\labelsep{#4#1\ #2}]{#4(#3)\@thmcounterend\ }#5}
% definition of \spnewtheorem* without number
\def\@sthm#1#2{\@Ynthm{#1}{#2}}
\def\@Ynthm#1#2#3#4{\expandafter\@ifdefinable\csname #1\endcsname
{\global\@namedef{#1}{\@Thm{\csname #1name\endcsname}{#3}{#4}}%
\expandafter\xdef\csname #1name\endcsname{#2}%
\global\@namedef{end#1}{\@endtheorem}}}
\def\@Thm#1#2#3{\topsep 7\p@ \@plus2\p@ \@minus4\p@
\@ifnextchar[{\@Ythm{#1}{#2}{#3}}{\@Xthm{#1}{#2}{#3}}}
\def\@Xthm#1#2#3{\@Begintheorem{#1}{#2}{#3}\ignorespaces}
\def\@Ythm#1#2#3[#4]{\@Opargbegintheorem{#1}
{#4}{#2}{#3}\ignorespaces}
\def\@Begintheorem#1#2#3{#3\trivlist
\item[\hskip\labelsep{#2#1\@thmcounterend}]}
\def\@Opargbegintheorem#1#2#3#4{#4\trivlist
\item[\hskip\labelsep{#3#1}]{#3(#2)\@thmcounterend\ }}
\if@envcntsect
\def\@thmcountersep{.}
\spnewtheorem{theorem}{Theorem}[section]{\bfseries}{\itshape}
\else
\spnewtheorem{theorem}{Theorem}{\bfseries}{\itshape}
\if@envcntreset
\@addtoreset{theorem}{section}
\else
\@addtoreset{theorem}{chapter}
\fi
\fi
%definition of divers theorem environments
\spnewtheorem*{claim}{Claim}{\itshape}{\rmfamily}
\spnewtheorem*{proof}{Proof}{\itshape}{\rmfamily}
\if@envcntsame % alle Umgebungen wie Theorem.
\def\spn@wtheorem#1#2#3#4{\@spothm{#1}[theorem]{#2}{#3}{#4}}
\else % alle Umgebungen mit eigenem Zaehler
\if@envcntsect % mit section numeriert
\def\spn@wtheorem#1#2#3#4{\@spxnthm{#1}{#2}[section]{#3}{#4}}
\else % nicht mit section numeriert
\if@envcntreset
\def\spn@wtheorem#1#2#3#4{\@spynthm{#1}{#2}{#3}{#4}
\@addtoreset{#1}{section}}
\else
\def\spn@wtheorem#1#2#3#4{\@spynthm{#1}{#2}{#3}{#4}
\@addtoreset{#1}{chapter}}%
\fi
\fi
\fi
\spn@wtheorem{case}{Case}{\itshape}{\rmfamily}
\spn@wtheorem{conjecture}{Conjecture}{\itshape}{\rmfamily}
\spn@wtheorem{corollary}{Corollary}{\bfseries}{\itshape}
\spn@wtheorem{definition}{Definition}{\bfseries}{\itshape}
\spn@wtheorem{example}{Example}{\itshape}{\rmfamily}
\spn@wtheorem{exercise}{Exercise}{\itshape}{\rmfamily}
\spn@wtheorem{lemma}{Lemma}{\bfseries}{\itshape}
\spn@wtheorem{note}{Note}{\itshape}{\rmfamily}
\spn@wtheorem{problem}{Problem}{\itshape}{\rmfamily}
\spn@wtheorem{property}{Property}{\itshape}{\rmfamily}
\spn@wtheorem{proposition}{Proposition}{\bfseries}{\itshape}
\spn@wtheorem{question}{Question}{\itshape}{\rmfamily}
\spn@wtheorem{solution}{Solution}{\itshape}{\rmfamily}
\spn@wtheorem{remark}{Remark}{\itshape}{\rmfamily}
\def\@takefromreset#1#2{%
\def\@tempa{#1}%
\let\@tempd\@elt
\def\@elt##1{%
\def\@tempb{##1}%
\ifx\@tempa\@tempb\else
\@addtoreset{##1}{#2}%
\fi}%
\expandafter\expandafter\let\expandafter\@tempc\csname cl@#2\endcsname
\expandafter\def\csname cl@#2\endcsname{}%
\@tempc
\let\@elt\@tempd}
\def\theopargself{\def\@spopargbegintheorem##1##2##3##4##5{\trivlist
\item[\hskip\labelsep{##4##1\ ##2}]{##4##3\@thmcounterend\ }##5}
\def\@Opargbegintheorem##1##2##3##4{##4\trivlist
\item[\hskip\labelsep{##3##1}]{##3##2\@thmcounterend\ }}
}
\renewenvironment{abstract}{%
\list{}{\advance\topsep by0.35cm\relax\small
\leftmargin=1cm
\labelwidth=\z@
\listparindent=\z@
\itemindent\listparindent
\rightmargin\leftmargin}\item[\hskip\labelsep
\bfseries\abstractname]}
{\endlist}
\newdimen\headlineindent % dimension for space between
\headlineindent=1.166cm % number and text of headings.
\def\ps@headings{\let\@mkboth\@gobbletwo
\let\@oddfoot\@empty\let\@evenfoot\@empty
\def\@evenhead{\normalfont\small\rlap{\thepage}\hspace{\headlineindent}%
\leftmark\hfil}
\def\@oddhead{\normalfont\small\hfil\rightmark\hspace{\headlineindent}%
\llap{\thepage}}
\def\chaptermark##1{}%
\def\sectionmark##1{}%
\def\subsectionmark##1{}}
\def\ps@titlepage{\let\@mkboth\@gobbletwo
\let\@oddfoot\@empty\let\@evenfoot\@empty
\def\@evenhead{\normalfont\small\rlap{\thepage}\hspace{\headlineindent}%
\hfil}
\def\@oddhead{\normalfont\small\hfil\hspace{\headlineindent}%
\llap{\thepage}}
\def\chaptermark##1{}%
\def\sectionmark##1{}%
\def\subsectionmark##1{}}
\if@runhead\ps@headings\else
\ps@empty\fi
\setlength\arraycolsep{1.4\p@}
\setlength\tabcolsep{1.4\p@}
\endinput
%end of file llncs.cls
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/W { clip } bind def
/W* { eoclip } bind def
/BT { } bind def
/ET { } bind def
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/Td { matrix translate cairo_font_matrix matrix concatmatrix dup
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/Tm { 2 copy 8 2 roll 6 array astore /cairo_font_matrix exch def
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@inproceedings{younge2011analysis,
title={Analysis of virtualization technologies for high performance computing environments},
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@inproceedings{duato2011enabling,
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@inproceedings{callaghan2002nfs,
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@article{vinoski2006advanced,
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\documentclass{llncs}
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%
\begin{document}
%
\mainmatter % start of the contributions
%
\title{Harnessing Wasted Computing Power for
Scientific Computing}
%
%
\author{S\'andor Guba \and M\'at\'e \H{O}ry \and Imre Szeber\'enyi}
%
\authorrunning{Ivar Ekeland et al.} % abbreviated author list (for running head)
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%%%% list of authors for the TOC (use if author list has to be modified)
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%Craig Chambers, Kim B. Bruce, and Elisa Bertino}
%
\institute{Budapest University of Technology and Economics, Hungary,\\
\email{\{guba.sandor,orymate,szebi\}@iit.bme.hu}
}
\maketitle % typeset the title of the contribution
\begin{abstract}
Nowadays more and more general purpose workstations installed in a student laboratory have a built in multi-core CPU and graphics card providing significant computing power. In most cases the utilization of these resources is low, and limited to lecture hours. The concept of utility computing plays an important role in technological development.
In this paper, we introduce a cloud management system which enables the simultaneous use of both dedicated resources and opportunistic environment. All the free workstations are to a resource pool, and can be used like ordinary cloud resources. Our solution leverages the advantages of HTCondor and OpenNebula systems.
Modern graphics processing units (GPUs) with many-core architectures have emerged as general-purpose parallel computing platforms that can dramatically accelerate scientific applications used for various simulations. Our business model harnesses the computing power of GPUs as well, using the needed amount of unused machines.
Our pilot infrastructure consists of a high performance cluster of 7 compute nodes with a sum of 76 physical cores and 304 GiB memory,
and 28 workstations with dual-core CPUs and dedicated graphics cards. Altogether we can use 10,752 CUDA cores through the network.
\keywords{Cloud, GPGPU, Grid, HTC, Utility computing}
\end{abstract}
%
\section{Introduction}
In universities there is a huge demand for high performance computing, but the smaller research groups can not afford buying a supercomputer or a large compute cluster. However significant unused computing capacity has been concentrated in the student laboratories. Most of our student labs have quite new PCs with modern multi-core CPUs and high performance graphics cards. The total computing performance of the laboratory resources could be significant. The open questions are: a) how can we collect and use these resources; b) what is the time limit of the usage; c) what happens if one or more jobs are not finishing at the given time slot; d) what management software and management rules are needed to support the various software environments which must be flexible and on demand.
In this paper we are investigating these problems and we introduce a solution based on a new approach. We show that the cloud technology, based on hardware accelerated virtualization, can be the right answer to these questions. First of all the management of the cloud based systems are easier and they are more flexible. According to the literature\cite{younge2011analysis} and our experiences the modern virtualization has minimal overhead compared with the native systems and has more advantages than disadvantages.
Our basic idea is to run only a minimal host operating system on the bare metal and virtualize everything else. In this manner we can easily solve the questions raised up. We do not need a time consuming cloning process for the configuration management. We can save the ongoing scientific computing process at any time, and we can restore and continue it even on another host machine. One can say, yes, these goals are solved already by various cloud management systems in corporate environment. So what is the novum on this?
The main difference between the corporate cloud infrastructure running 24/7 and our laboratory environment is that the corporate infrastructure is used only for serving the virtual machines. However, functions of our student laboratory are twofold: 1) During the scheduled lab exercises, the workstations act as a cloud host which serves only the virtual machines owned by the student sitting in front of the workstation or act as a simple cloud client. 2) While the lab is not used for teaching, the workstations are acting as a normal cloud host running computing intensive jobs like a normal HTCondor executing machine.
Our solution, CIRCLE (Cloud Infrastructure for Research and Computer Labs in Education) is not only harnessing the idle CPU cycles for scientific computing, but it provides
an easy and flexible web-portal for the usage and the management as well. The user can easily manage their virtual machines and access the files stored on the online storage. Nevertheless the lecturers can easily customise a new virtual machine image and share this image with the students. In this way all the students have the same and clean learning environment which enables to concentrate on the real task.
In the following sections we present the applied technologies and components used in our pilot system.
\section{Virtualization}
Most IaaS (infrastructure as a service) cloud systems are based on virtual machines. Although the technique has been available since the end of 1960's\cite{creasy1981origin}, widespread adoption of x86 based systems in the server segment made it almost entirely disappear. Later some vendors started implementing different software based solutions for virtualizing operating systems or even emulating CPUs. The renaissance of virtualization began with manufacturers extending the x86 instruction set to support low-overhead virtualization. This extension is known as Intel VT-x or AMD-V.
Current popular techniques are operating system virtualization and full hardware accelerated virtualization. The former typically takes shape in chroot environments and in namespacing of some kernel resources. This does not even allow running different kernels, nor different kinds of operating systems. The latest technique is full hardware accelerated virtualization, which is based on the CPU support for isolating the concurrently running instances. This approach is normally extended with paravirtualized device drivers, which eliminate the need for emulating real world storage and network controllers.
Hardware accelerated virtualization requires CPU support, but this is only missing currently on the low-end product line of the main x86 CPU manufacturers: some models of Intel Atom, Celeron, and Pentium. This hardware acceleration provides a near-native performance in HPC applications.\cite{younge2011analysis}
Currently there are more competing full virtualization solutions, the most notable free ones are KVM and XEN. At the time of our decision, the installation of a XEN hypervisor required modifications to the Linux kernel, and this was unacceptable for us. This is no longer the case, but we are satisfied with KVM.
Additionally, we use all KVM functions through the libvirt library, which provides an abstract interface for managing virtual machines.\cite{victoria2009creating} This has the benefit of theoretically flawless migration to other hypervisors like XEN, ESXi, or Hyper-V.\cite{bolte2010non}
Physically accessible computers are normally used with directly attached devices like display and keyboard. These devices are also emulated by KVM, and you can access virtual machines' consoles via the VNC protocol. This is useful for installing the operating system or troubleshooting, but Windows and Linux both provide better alternatives for remote access.
We use remote desktop protocol for accessing Windows hosts, and secure shell (SSH) for text-based Linux machines. Remote graphical login to X11 servers has always been available, but this is not reliable even on local network connections because it is stateless. We use instead NoMachine NX\cite{pinzari2003introduction}.
\section{Networking}
Most virtual machines in a cloud must have a network connection. On the physical layer, our KVM hypervisor gives us a virtual network interface controller, which is an emulated or paravirtualized NIC on the side of the guest operating system, and a virtual NIC on the host side.
Virtual machines are connected to virtual networks provided by manageable virtual switches (Figure~\ref{fig:figure1}). The Open vSwitch.\cite{pfaff2009extending}, what we are using, is a high performance multi-layer virtual switch with VLAN, QoS and OpenFlow support, merged into the mainline Linux kernel.
Virtual networks do not necessarily differ from physical ones in the upper layers. The most important different condition is the frequency of changes. Our system in traditional physical networks' point of view is like if someone changed the cabling hundred times in the middle of the day. The developed CIRCLE networking module consists of an iptables gateway, a tinydns name server and an ISC DHCP server. All of these are configured through remote procedure calls, and managed by a relational database backed object model.
Our solution groups the VMs to two main groups. The public vm-net is for machines which provide public services to more people, the private vm-net is for those which are used only by one or two persons. Public vm-net machines have public IPv4 and IPv6 addresses, and are protected with a simple ipset-based input filter. On the private vm-net, machines have private IPv4 and public IPv6 addresses. The primary remote connection is reached by automatically configured IPv4 port forward, or directly on the IPv6 address. As connecting to the standard port is a more comfortable solution, users who load our web portal from an IPv6 connection, get a hostname with public AAAA and private A records. If the user has no IPv6 connection, we display a common hostname with a single A record, and a custom port number. As IPv6 is widely available in the central infrastructure of our university, IPv6-capable clients are in majority. Users can open more ports, which means enabling incoming connections, and setting up IPv4 port forwarding in the background.
\begin{figure}[ht]
\begin{minipage}[b]{0.5\linewidth}
\centering
\includegraphics[width=\textwidth]{netarch}
\caption{The structure of the network}
\label{fig:figure1}
\end{minipage}
\hspace{0.5cm}
\begin{minipage}[b]{0.4\linewidth}
\centering
\includegraphics[width=\textwidth]{swarch}
\caption{Technologies used for CIRCLE}
\label{fig:figure2}
\end{minipage}
\end{figure}
\section{Storage}
Virtual machines' hard drives are provided to the hypervisors as read-write NFS shares managed by OpenNebula. Our cluster has a legacy InfiniBand SDR network, which is despite its age much faster than the gigabit Ethernet network. InfiniBand has its own data-link protocol, and Linux has mainline support for remote direct memory access (RDMA) over it , which provides near-local access times and no CPU load.\cite{callaghan2002nfs} Unfortunately this kernel module causes random cluster-wide kernel panics, which is unacceptable in a production system. We decided to use NFS4 over IP over InfiniBand, which also provided near-local timing. One problem remained: intensive random writes made the local file access on the NFS server slow (both with RDMA and IP over IB). Switching to the deadline scheduler solved this.
Disk images are stored in qcow2 (QEMU copy on write) format, which allows images with large free space to be stored in a smaller file, and also supports copy-on-write differential images. The latter feature is used for virtual machines, which eliminates the need of copying the whole base image file before launching a new instance. Saving a template consists of merging the base and differential images to a single one.
Since our usual virtual machines have temporary disks there is common need for a permanent online storage that can be easily accessed. It allows the user to use the same resources on different virtual computers or even at home, and it helps sharing data between virtual machines and local computers on a simple interface.
Our solution---CIRCLE File Server---is a multi-protocol file server, which runs on a virtual machine. Every user gets an amount of disk space, which is automatically mounted on our prepared appliances.
Windows VMs access the storage over SMB/CIFS. The authentication is handled by CIRCLE with automatically generated passwords. For security reasons we do not allow SMB access outside vm-net.
Linux guests mount the remote files with SSHFS\cite{hoskins2006sshfs}, a userspace SSH/SFTP virtual file system. For virtual machines the manager automatically generates key-pairs. SFTP service is also accessible over the internet. Users can set public keys on the web portal and immediately access their folder.
It is also possible to manage files on the cloud portal with an AJAX based web interface. Its backend consists of a Celery worker and an Nginx httpd.
\section{Putting it together}
The main goal was to give a self-service interface to our researchers, lecturers, and students.
Cloud management frameworks like OpenNebula and OpenStack promise this, but after learning and deploying OpenNebula, we found even its Self-Service portal's abstraction level too low.
Our solution is a new cloud management system, called CIRCLE, built up from various open source software components(figure~\ref{fig:figure2}). It provides an attractive web interface where users can do themselves all the common tasks including launching and managing/controlling virtual machines, creating templates based on other ones, and sharing templates with groups of users.
This cloud management system is based on Django\cite{holovaty2009definitive}. This popular Python framework gives us among other things a flexible object-relational mapping system. Although the Django framework is originally designed for web applications, the business logic is not at all web specific. That's why it is easy to provide command line or remote procedure call interfaces to the model.
As the primary interface is web, which is in some aspect a soft real-time system, the model can not use synchronous calls to external resources, nor execute system commands. This is the reason why all remote procedure calls are done asynchronously through a standard task queue. Our choice is the Celery distributed task queue. This is the most popular among such systems, which are integrated with Django. Celery is configured to use an implementation of AMQP\cite{vinoski2006advanced} protocol---called RabbitMQ---as its message broker.
Celery workers set up the netfilter firewall, the domain name and DHCP services, the IP blacklist, execute file server operations, and also communicate with OpenNebula. This distributed solution makes it possible to dynamically alter the subsystems.
In the opposite direction, some subsystems notify others of their state transitions through Celery. Based on this information further Celery tasks are submitted, and the models are updated.
CIRCLE manages the full state space of the resources. Some of it is also stored by the underlying OpenNebula, but most of this redundant information is bound to its initial value as OpenNebula does not handle changes in meta information. This behavior arises of design decisions, and is not expected to be improved. The thin slice of OpenNebula used by our system is continuously shrinking, and we intend dropping OpenNebula in favor of direct bindings to libvirt and the also considerably customized storage and network hooks.
\section{Execution on workstations}
The cloud system at our institute takes a big role in education and in general R{\&}D infrastructure, but there is a significant demand for high-throughput scientific computing. This kind of requirement usually appears in form of many long-running, independent jobs. On most parts of the world there is no fund to build dedicated HPC clusters with enough resources for these jobs.
The highest load on the cloud takes place in the office hours and the evenings, in more than half of the time we have many free resources, so it is possible to run these jobs on low priority virtual machines in the cloud. If interactive load is increasing, we can even suspend these machines, and resume them later.
Running scientific batch jobs on student laboratory computers also has a long history. Our idea is to run some of these jobs on virtual machines in the computer laboratories overnight and on weekends. We can suspend in the morning all virtual machines to a memory image, and resume on the same or some other hypervisor next evening. This solution makes it possible to run individual jobs virtually continuously through months or a year, without any specific efforts. This result is important because of our observation that the runtime of similar jobs have a high standard deviation, and it also protects against losing the partial result of months long computations in case of hardware or power failure. HTCondor has a similar result with its checkpoint support, but it needs to modify the software, which is often impossible or sometimes the users are not able to do this modification by themselves.
To be able to resume suspended machines, we have to copy back the differential image and the memory dump. Our choice for this is rsync.
The lab network is exposed to unauthorized access, so we have to limit access to confidential material. As a physically accessible general purpose workstation does not currently have a way to reliably authenticate itself to a server, nor to protect the stored data, we can not employ any solution against these attacks other than security through obscurity and not using these systems for any confidential executions.
Another important aspect is energy efficiency. We have successfully used HTCondor to automatically turn on and off the compute nodes of a HPC cluster. This is also working with Wake on LAN and SSH on the workstations.
\section{GPUs in the cloud}
The most significant HPC performance in our student laboratories is provided by the mid-level GPUs in all the workstations used for teaching computer graphics. There is a technology we applied successfully to use GPGPUs from the dedicated clusters' virtual machines: PCI passthrough.\cite{yang2012implementation} However, this technology requires both CPU and motherboard support of IOMMU, which is a high-end feature nowadays. The implementations are called Intel VT-d and AMD-Vi technologies, and they appear in the server- and high-end workstation segments.
As none of our laboratory computers support IOMMU, we have to find a different solution. The first one is using rCUDA, which is a small framework making it possible to run the host and device side of a CUDA program on different hosts, communicating over TCP/IP or InfiniBand network.\cite{duato2011enabling} With this, we can launch user-prepared virtual machines on each host, and run the device code via local (virtio-based) network on the hypervisor. rCUDA is also capable to serve more clients with a single device. This is useful if the host code uses the GPU only part time.
The other option is using directly the host machine to execute GPGPU jobs. This is a simpler approach, but necessarily involves a more complicated scheduler. Our choice for this type of problems is HTCondor, which can manage this scenario without much customization. The disadvantage is that the user can not customize the host-side operating system.
\section{Conclusions and future plans}
Our cloud system is built up in a modular manner. We have implemented all the main modules which enabled us to set up a production system. The system is now used as an integral part of our teaching activity, and also hosts several server functions for our department to use. At the time of writing this paper, there are 70 running and 54 suspended machines, using 109GiB of memory and producing not more than 3{\%} cummulated host cpu load on the cluster. In the first two months' production run, more than 1500 virtual machines have been launched by 125 users.
The students found the system useful and lecturers use it with pleasure because they can really set up a new lab exercise in minutes. The feedback from the users is absolutely positive, which encourages us to proceed and extend our system with the GPGPU module. We are working on making it fully functional, and releasing the whole system in an easily deployable and highly modular open source package. We are planning to finish the current development phase until the end of August.
\emph{We thank to the other members of the developer team: D\'aniel Bach, Bence D\'anyi, and \'Ad\'am Dud\'as. }
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if$
t "others" =
{ " et~al." * }
{ " \& " * t * }
if$
}
if$
}
't
if$
nameptr #1 + 'nameptr :=
namesleft #1 - 'namesleft :=
}
while$
}
FUNCTION {format.authors}
{ author empty$
{ "" }
{ author format.springer.names }
if$
}
FUNCTION {format.editors}
{ editor empty$
{ "" }
{ editor format.springer.names
editor num.names$ #1 >
{ ", eds." * }
{ ", ed." * }
if$
}
if$
}
FUNCTION {format.title}
{ title empty$
{ "" }
{ title "t" change.case$ }
if$
}
FUNCTION {n.dashify}
{ 't :=
""
{ t empty$ not }
{ t #1 #1 substring$ "-" =
{ t #1 #2 substring$ "--" = not
{ "--" *
t #2 global.max$ substring$ 't :=
}
{ { t #1 #1 substring$ "-" = }
{ "-" *
t #2 global.max$ substring$ 't :=
}
while$
}
if$
}
{ t #1 #1 substring$ *
t #2 global.max$ substring$ 't :=
}
if$
}
while$
}
FUNCTION {format.date}
{ year empty$
{ month empty$
{ "" }
{ "there's a month but no year in " cite$ * warning$
month
}
if$
}
{ month empty$
'year
{ month " " * year * }
if$
}
if$
}
FUNCTION {format.btitle}
{ title emphasize
}
FUNCTION {tie.or.space.connect}
{ duplicate$ text.length$ #3 <
{ "~" }
{ " " }
if$
swap$ * *
}
FUNCTION {either.or.check}
{ empty$
'pop$
{ "can't use both " swap$ * " fields in " * cite$ * warning$ }
if$
}
FUNCTION {format.bvolume}
{ volume empty$
{ "" }
{ "Volume" volume tie.or.space.connect
series empty$
'skip$
{ " of " * series emphasize * }
if$
add.period$
"volume and number" number either.or.check
}
if$
}
FUNCTION {format.number.series}
{ volume empty$
{ number empty$
{ series field.or.null }
{ output.state mid.sentence =
{ "number" }
{ "Number" }
if$
number tie.or.space.connect
series empty$
{ "there's a number but no series in " cite$ * warning$ }
{ " in " * series * }
if$
}
if$
}
{ "" }
if$
}
FUNCTION {format.edition}
{ edition empty$
{ "" }
{ output.state mid.sentence =
{ edition "l" change.case$ " edn." * }
{ edition "t" change.case$ " edn." * }
if$
}
if$
}
INTEGERS { multiresult }
FUNCTION {multi.page.check}
{ 't :=
#0 'multiresult :=
{ multiresult not
t empty$ not
and
}
{ t #1 #1 substring$
duplicate$ "-" =
swap$ duplicate$ "," =
swap$ "+" =
or or
{ #1 'multiresult := }
{ t #2 global.max$ substring$ 't := }
if$
}
while$
multiresult
}
FUNCTION {format.pages}
{ pages empty$
{ "" }
{ pages multi.page.check
{ "" pages n.dashify tie.or.space.connect }
{ "" pages tie.or.space.connect }
if$
}
if$
}
FUNCTION {format.vol}
{ volume bold
}
FUNCTION {format.vol.num}
{ volume bold
number empty$
{ }
{ number "(" swap$ * * ")" * }
if$
}
FUNCTION {pre.format.pages}
{ pages empty$
'skip$
{ duplicate$ empty$
{ pop$ format.pages }
{ " " * pages n.dashify * }
if$
}
if$
}
FUNCTION {format.chapter.pages}
{ chapter empty$
'format.pages
{ type empty$
{ "chapter" }
{ type "l" change.case$ }
if$
chapter tie.or.space.connect
pages empty$
'skip$
{ " " * format.pages * }
if$
}
if$
}
FUNCTION {format.in.ed.booktitle}
{ booktitle empty$
{ "" }
{ editor empty$
{ "In: " booktitle emphasize * }
{ "In " format.editors * ": " * booktitle emphasize * }
if$
}
if$
}
FUNCTION {empty.misc.check}
{ author empty$ title empty$ howpublished empty$
month empty$ year empty$ note empty$
and and and and and
{ "all relevant fields are empty in " cite$ * warning$ }
'skip$
if$
}
FUNCTION {format.thesis.type}
{ type empty$
'skip$
{ pop$
type "t" change.case$
}
if$
}
FUNCTION {format.tr.number}
{ type empty$
{ "Technical Report" }
'type
if$
number empty$
{ "t" change.case$ }
{ number tie.or.space.connect }
if$
}
FUNCTION {format.article.crossref}
{ key empty$
{ journal empty$
{ "need key or journal for " cite$ * " to crossref " * crossref *
warning$
""
}
{ "In {\em " journal * "\/}" * }
if$
}
{ "In " key * }
if$
" \cite{" * crossref * "}" *
}
FUNCTION {format.crossref.editor}
{ editor #1 "{vv~}{ll}" format.name$
editor num.names$ duplicate$
#2 >
{ pop$ " et~al." * }
{ #2 <
'skip$
{ editor #2 "{ff }{vv }{ll}{ jj}" format.name$ "others" =
{ " et~al." * }
{ " and " * editor #2 "{vv~}{ll}" format.name$ * }
if$
}
if$
}
if$
}
FUNCTION {format.book.crossref}
{ volume empty$
{ "empty volume in " cite$ * "'s crossref of " * crossref * warning$
"In "
}
{ "Volume" volume tie.or.space.connect
" of " *
}
if$
" \cite{" * crossref * "}" *
}
FUNCTION {format.incoll.inproc.crossref}
{ editor empty$
editor field.or.null author field.or.null =
or
{ key empty$
{ booktitle empty$
{ "need editor, key, or booktitle for " cite$ * " to crossref " *
crossref * warning$
""
}
{ "" }
if$
}
{ "" }
if$
}
{ "" }
if$
" \cite{" * crossref * "}" *
}
FUNCTION {and.the.note}
{ note output
note empty$
'skip$
{ add.period$ }
if$
}
FUNCTION {article}
{ output.bibitem
format.authors "author" output.check
stupid.colon
format.title "title" output.check
new.block
crossref missing$
{ journal emphasize "journal" output.check
format.vol.num output
format.date parens output
format.pages output
}
{ format.article.crossref output.nonnull
format.pages output
}
if$
and.the.note
fin.entry
}
FUNCTION {book}
{ output.bibitem
author empty$
{ format.editors "author and editor" output.check }
{ format.authors output.nonnull
crossref missing$
{ "author and editor" editor either.or.check }
'skip$
if$
}
if$
stupid.colon
format.btitle "title" output.check
new.sentence
crossref missing$
{ format.edition output
format.bvolume output
new.block
format.number.series output
new.sentence
publisher "publisher" output.check
address empty$
'skip$
{ insert.comma }
if$
address output
format.date parens output
}
{ format.book.crossref output.nonnull
}
if$
and.the.note
fin.entry
}
FUNCTION {booklet}
{ output.bibitem
format.authors output
stupid.colon
format.title "title" output.check
howpublished address new.block.checkb
howpublished output
address empty$
'skip$
{ insert.comma }
if$
address output
format.date parens output
and.the.note
fin.entry
}
FUNCTION {inbook}
{ output.bibitem
author empty$
{ format.editors "author and editor" output.check }
{ format.authors output.nonnull
crossref missing$
{ "author and editor" editor either.or.check }
'skip$
if$
}
if$
stupid.colon
crossref missing$
{ chapter output
new.block
format.number.series output
new.sentence
"In:" output
format.btitle "title" output.check
new.sentence
format.edition output
format.bvolume output
publisher "publisher" output.check
address empty$
'skip$
{ insert.comma }
if$
address output
format.date parens output
}
{ chapter output
new.block
format.incoll.inproc.crossref output.nonnull
}
if$
format.pages output
and.the.note
fin.entry
}
FUNCTION {incollection}
{ output.bibitem
format.authors "author" output.check
stupid.colon
format.title "title" output.check
new.block
crossref missing$
{ format.in.ed.booktitle "booktitle" output.check
new.sentence
format.bvolume output
format.number.series output
new.block
format.edition output
publisher "publisher" output.check
address empty$
'skip$
{ insert.comma }
if$
address output
format.date parens output
format.pages output
}
{ format.incoll.inproc.crossref output.nonnull
format.chapter.pages output
}
if$
and.the.note
fin.entry
}
FUNCTION {inproceedings}
{ output.bibitem
format.authors "author" output.check
stupid.colon
format.title "title" output.check
new.block
crossref missing$
{ format.in.ed.booktitle "booktitle" output.check
new.sentence
format.bvolume output
format.number.series output
address empty$
{ organization publisher new.sentence.checkb
organization empty$
'skip$
{ insert.comma }
if$
organization output
publisher empty$
'skip$
{ insert.comma }
if$
publisher output
format.date parens output
}
{ insert.comma
address output.nonnull
organization empty$
'skip$
{ insert.comma }
if$
organization output
publisher empty$
'skip$
{ insert.comma }
if$
publisher output
format.date parens output
}
if$
}
{ format.incoll.inproc.crossref output.nonnull
}
if$
format.pages output
and.the.note
fin.entry
}
FUNCTION {conference} { inproceedings }
FUNCTION {manual}
{ output.bibitem
author empty$
{ organization empty$
'skip$
{ organization output.nonnull
address output
}
if$
}
{ format.authors output.nonnull }
if$
stupid.colon
format.btitle "title" output.check
author empty$
{ organization empty$
{ address new.block.checka
address output
}
'skip$
if$
}
{ organization address new.block.checkb
organization output
address empty$
'skip$
{ insert.comma }
if$
address output
}
if$
new.sentence
format.edition output
format.date parens output
and.the.note
fin.entry
}
FUNCTION {mastersthesis}
{ output.bibitem
format.authors "author" output.check
stupid.colon
format.title "title" output.check
new.block
"Master's thesis" format.thesis.type output.nonnull
school empty$
'skip$
{ insert.comma }
if$
school "school" output.check
address empty$
'skip$
{ insert.comma }
if$
address output
format.date parens output
and.the.note
fin.entry
}
FUNCTION {misc}
{ output.bibitem
format.authors "author" output.check
stupid.colon
format.title "title" output.check
howpublished new.block.checka
howpublished output
format.date parens output
and.the.note
fin.entry
empty.misc.check
}
FUNCTION {phdthesis}
{ output.bibitem
format.authors "author" output.check
stupid.colon
format.btitle "title" output.check
new.block
"PhD thesis" format.thesis.type output.nonnull
school empty$
'skip$
{ insert.comma }
if$
school "school" output.check
address empty$
'skip$
{ insert.comma }
if$
address output
format.date parens output
and.the.note
fin.entry
}
FUNCTION {proceedings}
{ output.bibitem
editor empty$
{ organization empty$
{ "" }
{ organization output
stupid.colon }
if$
}
{ format.editors output.nonnull
stupid.colon
}
if$
format.btitle "title" output.check
new.block
crossref missing$
{ format.in.ed.booktitle "booktitle" output.check
new.sentence
format.bvolume output
format.number.series output
address empty$
{ organization publisher new.sentence.checkb
organization empty$
'skip$
{ insert.comma }
if$
organization output
publisher empty$
'skip$
{ insert.comma }
if$
publisher output
format.date parens output
}
{ insert.comma
address output.nonnull
organization empty$
'skip$
{ insert.comma }
if$
organization output
publisher empty$
'skip$
{ insert.comma }
if$
publisher output
format.date parens output
}
if$
}
{ format.incoll.inproc.crossref output.nonnull
}
if$
and.the.note
fin.entry
}
FUNCTION {techreport}
{ output.bibitem
format.authors "author" output.check
stupid.colon
format.title "title" output.check
new.block
format.tr.number output.nonnull
institution empty$
'skip$
{ insert.comma }
if$
institution "institution" output.check
address empty$
'skip$
{ insert.comma }
if$
address output
format.date parens output
and.the.note
fin.entry
}
FUNCTION {unpublished}
{ output.bibitem
format.authors "author" output.check
stupid.colon
format.title "title" output.check
new.block
note "note" output.check
format.date parens output
fin.entry
}
FUNCTION {default.type} { misc }
MACRO {jan} {"January"}
MACRO {feb} {"February"}
MACRO {mar} {"March"}
MACRO {apr} {"April"}
MACRO {may} {"May"}
MACRO {jun} {"June"}
MACRO {jul} {"July"}
MACRO {aug} {"August"}
MACRO {sep} {"September"}
MACRO {oct} {"October"}
MACRO {nov} {"November"}
MACRO {dec} {"December"}
MACRO {acmcs} {"ACM Computing Surveys"}
MACRO {acta} {"Acta Informatica"}
MACRO {cacm} {"Communications of the ACM"}
MACRO {ibmjrd} {"IBM Journal of Research and Development"}
MACRO {ibmsj} {"IBM Systems Journal"}
MACRO {ieeese} {"IEEE Transactions on Software Engineering"}
MACRO {ieeetc} {"IEEE Transactions on Computers"}
MACRO {ieeetcad}
{"IEEE Transactions on Computer-Aided Design of Integrated Circuits"}
MACRO {ipl} {"Information Processing Letters"}
MACRO {jacm} {"Journal of the ACM"}
MACRO {jcss} {"Journal of Computer and System Sciences"}
MACRO {scp} {"Science of Computer Programming"}
MACRO {sicomp} {"SIAM Journal on Computing"}
MACRO {tocs} {"ACM Transactions on Computer Systems"}
MACRO {tods} {"ACM Transactions on Database Systems"}
MACRO {tog} {"ACM Transactions on Graphics"}
MACRO {toms} {"ACM Transactions on Mathematical Software"}
MACRO {toois} {"ACM Transactions on Office Information Systems"}
MACRO {toplas} {"ACM Transactions on Programming Languages and Systems"}
MACRO {tcs} {"Theoretical Computer Science"}
READ
STRINGS { longest.label }
INTEGERS { number.label longest.label.width }
FUNCTION {initialize.longest.label}
{ "" 'longest.label :=
#1 'number.label :=
#0 'longest.label.width :=
}
FUNCTION {longest.label.pass}
{ number.label int.to.str$ 'label :=
number.label #1 + 'number.label :=
label width$ longest.label.width >
{ label 'longest.label :=
label width$ 'longest.label.width :=
}
'skip$
if$
}
EXECUTE {initialize.longest.label}
ITERATE {longest.label.pass}
FUNCTION {begin.bib}
{ preamble$ empty$
'skip$
{ preamble$ write$ newline$ }
if$
"\begin{thebibliography}{" longest.label * "}" * write$ newline$
}
EXECUTE {begin.bib}
EXECUTE {init.state.consts}
ITERATE {call.type$}
FUNCTION {end.bib}
{ newline$
"\end{thebibliography}" write$ newline$
}
EXECUTE {end.bib}
% clmomu01.ind
%-----------------------------------------------------------------------
% CLMoMu01 1.0: LaTeX style files for books
% Sample index file for User's guide
% (c) Springer-Verlag HD
%-----------------------------------------------------------------------
\begin{theindex}
\item Absorption\idxquad 327
\item Absorption of radiation \idxquad 289--292,\, 299,\,300
\item Actinides \idxquad 244
\item Aharonov-Bohm effect\idxquad 142--146
\item Angular momentum\idxquad 101--112
\subitem algebraic treatment\idxquad 391--396
\item Angular momentum addition\idxquad 185--193
\item Angular momentum commutation relations\idxquad 101
\item Angular momentum quantization\idxquad 9--10,\,104--106
\item Angular momentum states\idxquad 107,\,321,\,391--396
\item Antiquark\idxquad 83
\item $\alpha$-rays\idxquad 101--103
\item Atomic theory\idxquad 8--10,\,219--249,\,327
\item Average value\newline ({\it see also\/} Expectation value)
15--16,\,25,\,34,\,37,\,357
\indexspace
\item Baker-Hausdorff formula\idxquad 23
\item Balmer formula\idxquad 8
\item Balmer series\idxquad 125
\item Baryon\idxquad 220,\,224
\item Basis\idxquad 98
\item Basis system\idxquad 164,\,376
\item Bell inequality\idxquad 379--381,\,382
\item Bessel functions\idxquad 201,\,313,\,337
\subitem spherical\idxquad 304--306,\, 309,\, 313--314,\,322
\item Bound state\idxquad 73--74,\,78--79,\,116--118,\,202,\, 267,\,
273,\,306,\,348,\,351
\item Boundary conditions\idxquad 59,\, 70
\item Bra\idxquad 159
\item Breit-Wigner formula\idxquad 80,\,84,\,332
\item Brillouin-Wigner perturbation theory\idxquad 203
\indexspace
\item Cathode rays\idxquad 8
\item Causality\idxquad 357--359
\item Center-of-mass frame\idxquad 232,\,274,\,338
\item Central potential\idxquad 113--135,\,303--314
\item Centrifugal potential\idxquad 115--116,\,323
\item Characteristic function\idxquad 33
\item Clebsch-Gordan coefficients\idxquad 191--193
\item Cold emission\idxquad 88
\item Combination principle, Ritz's\idxquad 124
\item Commutation relations\idxquad 27,\,44,\,353,\,391
\item Commutator\idxquad 21--22,\,27,\,44,\,344
\item Compatibility of measurements\idxquad 99
\item Complete orthonormal set\idxquad 31,\,40,\,160,\,360
\item Complete orthonormal system, {\it see}\newline
Complete orthonormal set
\item Complete set of observables, {\it see\/} Complete
set of operators
\indexspace
\item Eigenfunction\idxquad 34,\,46,\,344--346
\subitem radial\idxquad 321
\subsubitem calculation\idxquad 322--324
\item EPR argument\idxquad 377--378
\item Exchange term\idxquad 228,\,231,\,237,\,241,\,268,\,272
\indexspace
\item $f$-sum rule\idxquad 302
\item Fermi energy\idxquad 223
\indexspace
\item H$^+_2$ molecule\idxquad 26
\item Half-life\idxquad 65
\item Holzwarth energies\idxquad 68
\end{theindex}
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<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Better animations</title>
<style>
.container {
width: 400px;
-webkit-transition: height 700ms;
height: 0px;
overflow: hidden;
background-color: red;
}
.container.opened {
}
</style>
<script type="text/javascript" src="http://code.jquery.com/jquery-1.9.1.min.js"></script>
<script type="text/javascript">
window.onload=function(){
document.getElementById('toggle-css-btn').onclick=function(){
var el=$('#toggle-css');
if(!el.hasClass('opened')) {
el.css('height', el.find('.details')[0].offsetHeight||'1000px');
} else {
el.css('height', '0px');
}
$('#toggle-css').toggleClass('opened');
}
}
</script>
</head>
<body>
<div class="container" id="toggle-css">
<div class="details">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec et consectetur augue. Nulla eu egestas massa. Sed convallis odio justo, ac vehicula sem. Nunc diam leo, consequat nec vulputate volutpat, vulputate quis enim. Praesent mattis egestas neque, at aliquam neque scelerisque non. Ut convallis ligula quis mi tincidunt id accumsan turpis tincidunt. Praesent quis lacus dolor, a varius magna. Aliquam tellus enim, convallis at varius a, pharetra eget dolor.
Aliquam sed leo quis ante fermentum viverra non at ante. Aliquam ante ligula, posuere in dictum egestas, commodo vel mi. Praesent dui nulla, accumsan euismod eleifend non, suscipit dapibus erat. Aliquam consequat felis ut sapien sodales ultricies non nec tellus. In ac odio ante. Nunc lectus urna, bibendum vitae sodales vel, volutpat id libero. Phasellus id turpis ligula, et tincidunt ante.
</div>
</div>
<button id="toggle-css-btn">Toggle, CSS3</button>
</body>
</html>
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Ellipsis test</title>
</head>
<body>
<div style="width: 40%; background-color: cyan;">
<div style="float: left; background-color: yellow; width: calc(100%-60px);">
<div style="background: red; float: left; text-overflow: ellipsis; width: 70%; min-width: 50px; overflow: hidden; white-space: nowrap;">Hosszú név, Hosszú név, Hosszú név, Hosszú név</div>
<div style="float: left; background-color: blue;">Részletek</div>
</div>
<div style="float: right; background-color: green;">jobb szél</div>
<div style="clear: both;"></div>
</div>
</body>
</html>
......@@ -6,7 +6,7 @@ from one.models import Instance
from django.template.loader import render_to_string
from one.tasks import SendMailTask
from django.utils.translation import ugettext_lazy as _
from cloud.settings import CLOUD_URL as url
from django.conf import settings
from django.utils import translation
class Job(HourlyJob):
......@@ -16,6 +16,8 @@ class Job(HourlyJob):
return (orig + datetime.timedelta(days=days, hours=hours)).replace(minute=0, second=0, microsecond=0)
def execute(self):
url = settings.CLOUD_URL
site = settings.SITE_NAME
now = datetime.datetime.utcnow().replace(tzinfo=utc)
d = {
'1m': self.calc(orig=now, days=30),
......@@ -28,26 +30,33 @@ class Job(HourlyJob):
# print i+':'+unicode(d[i])
# delete
for i in Instance.objects.filter(state__in=['ACTIVE', 'STOPPED'], time_of_delete__isnull=False):
for i in Instance.objects.filter(state__in=['ACTIVE', 'STOPPED'],
time_of_delete__isnull=False, waiting=False):
try:
translation.activate(i.owner.person_set.get().language)
except:
pass
# print u'%s delete: %s' % (i.name, i.time_of_delete)
delete = i.time_of_delete.replace(minute=0, second=0, microsecond=0)
if not settings.DELETE_VM:
continue
if i.time_of_delete < now:
# msg = render_to_string('mails/notification-delete-now.txt', { 'user': i.owner, 'instance': i, 'url': url } )
# SendMailTask.delay(to=i.owner.email, subject='[IK Cloud] %s' % i.name, msg=msg)
pass
msg = render_to_string('mails/notification-delete-now.txt',
{ 'user': i.owner, 'instance': i, 'url': url, 'site': site } )
SendMailTask.delay(to=i.owner.email, subject='[%s] %s' %
(site, i.name), msg=msg)
i.one_delete()
else:
for t in d:
if delete == d[t]:
msg = render_to_string('mails/notification-delete.txt', { 'user': i.owner, 'instance': i, 'url': url } )
SendMailTask.delay(to=i.owner.email, subject='[IK Cloud] %s' % i.name, msg=msg)
msg = render_to_string('mails/notification-delete.txt',
{ 'user': i.owner, 'instance': i, 'url': url, 'site': site } )
SendMailTask.delay(to=i.owner.email, subject='[%s] %s' %
(site, i.name), msg=msg)
# suspend
for i in Instance.objects.filter(state='ACTIVE', time_of_suspend__isnull=False):
for i in Instance.objects.filter(state='ACTIVE',
time_of_suspend__isnull=False, waiting=False):
try:
translation.activate(i.owner.person_set.get().language)
except:
......@@ -56,11 +65,15 @@ class Job(HourlyJob):
suspend = i.time_of_suspend.replace(minute=0, second=0, microsecond=0)
if i.time_of_suspend < now:
msg = render_to_string('mails/notification-suspend-now.txt', { 'user': i.owner, 'instance': i, 'url': url } )
SendMailTask.delay(to=i.owner.email, subject='[IK Cloud] %s' % i.name, msg=msg)
msg = render_to_string('mails/notification-suspend-now.txt',
{ 'user': i.owner, 'instance': i, 'url': url, 'site': site } )
SendMailTask.delay(to=i.owner.email, subject='[%s] %s' %
(site, i.name), msg=msg)
i.stop()
else:
for t in d:
if suspend == d[t]:
msg = render_to_string('mails/notification-suspend.txt', { 'user': i.owner, 'instance': i, 'url': url } )
SendMailTask.delay(to=i.owner.email, subject='[IK Cloud] %s' % i.name, msg=msg)
msg = render_to_string('mails/notification-suspend.txt',
{ 'user': i.owner, 'instance': i, 'url': url, 'site': site } )
SendMailTask.delay(to=i.owner.email, subject='[%s] %s' %
(site, i.name), msg=msg)
......@@ -18,7 +18,9 @@ from firewall.models import Host, Rule, Vlan, Record
from school.models import Person, Group
from store.api import StoreApi
from .util import keygen
from cloud.settings import CLOUD_URL
import django.conf
CLOUD_URL = django.conf.settings.CLOUD_URL
logger = logging.getLogger(__name__)
pwgen = User.objects.make_random_password
......@@ -228,6 +230,9 @@ class Share(models.Model):
return u"%(group)s: %(tpl)s %(owner)s" % {
'group': self.group, 'tpl': self.template, 'owner': self.owner}
def get_used_quota(self):
return self.template.get_credits_per_instance() * self.instance_limit
class Disk(models.Model):
"""Virtual disks automatically synchronized with OpenNebula."""
name = models.CharField(max_length=100, unique=True,
......@@ -244,23 +249,23 @@ class Disk(models.Model):
@staticmethod
def update(delete=True):
"""Get and register virtual disks from OpenNebula."""
import subprocess
proc = subprocess.Popen(["/opt/occi.sh", "storage", "list"],
stdout=subprocess.PIPE, stderr=subprocess.PIPE)
(out, err) = proc.communicate()
from xml.dom.minidom import parse, parseString
x = parseString(out)
try:
from .tasks import UpdateDiskTask
x = UpdateDiskTask.delay().get(timeout=10)
x[0]
except:
return
with transaction.commit_on_success():
l = []
for d in x.getElementsByTagName("STORAGE"):
id = int(d.getAttributeNode('href').nodeValue.split('/')[-1])
name=d.getAttributeNode('name').nodeValue
for d in x:
id = int(d['id'])
name = d['name']
try:
d = Disk.objects.get(id=id)
d.name=name
d, created = Disk.objects.get_or_create(id=id)
d.name = name
d.save()
except:
Disk(id=id, name=name).save()
pass
l.append(id)
if delete:
Disk.objects.exclude(id__in=l).delete()
......@@ -286,23 +291,23 @@ class Network(models.Model):
@staticmethod
def update():
"""Get and register virtual networks from OpenNebula."""
import subprocess
proc = subprocess.Popen(["/opt/occi.sh", "network", "list"],
stdout=subprocess.PIPE, stderr=subprocess.PIPE)
(out, err) = proc.communicate()
from xml.dom.minidom import parse, parseString
x = parseString(out)
try:
from .tasks import UpdateNetworkTask
x = UpdateNetworkTask.delay().get(timeout=10)
x[0]
except:
return
with transaction.commit_on_success():
l = []
for d in x.getElementsByTagName("NETWORK"):
id = int(d.getAttributeNode('href').nodeValue.split('/')[-1])
name=d.getAttributeNode('name').nodeValue
for n in x:
id = int(n['id'])
name = n['name']
try:
n = Network.objects.get(id=id)
n, created = Network.objects.get_or_create(id=id)
n.name = name
n.save()
except:
Network(id=id, name=name).save()
pass
l.append(id)
Network.objects.exclude(id__in=l).delete()
def get_vlan(self):
......@@ -381,6 +386,30 @@ class Template(models.Model):
logger.info("Could not delete template. Instances still running!")
return False
def get_credits_per_instance(self):
return self.instance_type.credit
def get_shares_for(self, user=None):
shares = Share.objects.all().filter(template=self)
if user:
return shares.filter(owner=user)
else:
return shares
def get_share_quota_usage_for(self, user=None):
shares = self.get_shares_for(user)
usage = 0
for share in shares:
usage += share.instance_limit * self.get_credits_per_instance()
return usage
def get_share_quota_usage_for_user_with_type(self, type, user=None):
shares = self.get_shares_for(user)
usage = 0
for share in shares:
usage += share.instance_limit * type.credit
return usage
class Instance(models.Model):
"""Virtual machine instance."""
name = models.CharField(max_length=100,
......@@ -461,33 +490,6 @@ class Instance(models.Model):
except:
return
def update_state(self):
"""Get and update VM state from OpenNebula."""
import subprocess
if not self.one_id:
return
proc = subprocess.Popen(["/opt/occi.sh", "compute", "show",
"%d" % self.one_id], stdout=subprocess.PIPE)
(out, err) = proc.communicate()
x = None
old_state = self.state
try:
from xml.dom.minidom import parse, parseString
x = parseString(out)
self.vnet_ip = (x.getElementsByTagName("IP")[0].childNodes[0]
.nodeValue.split('.')[3])
state = x.getElementsByTagName("STATE")[0].childNodes[0].nodeValue
self.state = state
except:
self.state = 'UNKNOWN'
if self.state != old_state:
self.waiting = False
self.save()
if self.template.state == 'SAVING':
self.check_if_is_save_as_done()
return x
@property
def nat(self):
if self.firewall_host is not None:
......@@ -512,13 +514,10 @@ class Instance(models.Model):
def submit(cls, template, owner, extra="", share=None):
"""Submit a new instance to OpenNebula."""
from django.template.defaultfilters import escape
out = ""
inst = Instance(pw=pwgen(), template=template, owner=owner,
share=share, state='PENDING')
inst.save()
hostname = u"%d" % (inst.id, )
with tempfile.NamedTemporaryFile(delete=False) as f:
os.chmod(f.name, stat.S_IRUSR|stat.S_IWUSR|stat.S_IRGRP|stat.S_IROTH)
token = signing.dumps(inst.id, salt='activate')
try:
details = owner.cloud_details
......@@ -526,17 +525,7 @@ class Instance(models.Model):
details = UserCloudDetails(user=owner)
details.save()
tpl = u"""
<COMPUTE>
<NAME>%(name)s</NAME>
<INSTANCE_TYPE href="http://www.opennebula.org/instance_type/%(instance)s"/>
<DISK>
<STORAGE href="http://www.opennebula.org/storage/%(disk)d"/>
</DISK>
<NIC>
<NETWORK href="http://www.opennebula.org/network/%(net)d"/>
</NIC>
<CONTEXT>
ctx = u'''
<SOURCE>web</SOURCE>
<HOSTNAME>%(hostname)s</HOSTNAME>
<NEPTUN>%(neptun)s</NEPTUN>
......@@ -546,47 +535,48 @@ class Instance(models.Model):
<BOOTURL>%(booturl)s</BOOTURL>
<SERVER>store.cloud.ik.bme.hu</SERVER>
%(extra)s
</CONTEXT>
</COMPUTE>""" % {"name": u"%s %d" % (owner.username, inst.id),
"instance": template.instance_type,
"disk": template.disk.id,
"net": template.network.id,
''' % {
"pw": escape(inst.pw),
"hostname": escape(hostname),
"smbpw": escape(details.smb_password),
"sshkey": escape(details.ssh_private_key),
"neptun": escape(owner.username),
"booturl": "%sb/%s/" % ( CLOUD_URL, token ),
"extra": extra}
f.write(tpl)
f.close()
import subprocess
proc = subprocess.Popen(["/opt/occi.sh", "compute", "create",
f.name], stdout=subprocess.PIPE)
(out, err) = proc.communicate()
os.unlink(f.name)
from xml.dom.minidom import parse, parseString
"extra": extra
}
try:
x = parseString(out)
from .tasks import CreateInstanceTask
x = CreateInstanceTask.delay(
name=u"%s %d" % (owner.username, inst.id),
instance_type=template.instance_type.name,
disk_id=int(template.disk.id),
network_id=int(template.network.id),
ctx=ctx,
)
res = x.get(timeout=10)
res['one_id']
except:
inst.delete()
raise Exception("Unable to create VM instance.")
inst.one_id = int(x.getElementsByTagName("ID")[0].childNodes[0]
.nodeValue)
inst.ip = x.getElementsByTagName("IP")[0].childNodes[0].nodeValue
inst.one_id = res['one_id']
inst.ip = res['interfaces'][0]['ip']
inst.name = ("%(neptun)s %(template)s (%(id)d)" %
{'neptun': owner.username, 'template': template.name,
'id': inst.one_id})
inst.save()
host = Host(vlan=Vlan.objects.get(name=template.network.name),
owner=owner)
host.hostname = hostname
host.mac = x.getElementsByTagName("MAC")[0].childNodes[0].nodeValue
host.ipv4 = inst.ip
host = Host(
vlan=Vlan.objects.get(name=template.network.name),
owner=owner, hostname=hostname,
mac=res['interfaces'][0]['mac'],
ipv4=res['interfaces'][0]['ip'], ipv6='auto',
)
if inst.template.network.nat:
host.pub_ipv4 = Vlan.objects.get(name=template.network.name).snat_ip
host.shared_ip = True
host.ipv6 = "auto"
try:
host.save()
except:
......@@ -597,6 +587,7 @@ class Instance(models.Model):
logger.warning('Delete orphan fw host (%s) of %s.' % (i, inst))
i.delete()
host.save()
host.enable_net()
host.add_port("tcp", inst.get_port(), {"rdp": 3389, "nx": 22,
"ssh": 22}[inst.template.access_type])
......@@ -606,10 +597,13 @@ class Instance(models.Model):
def one_delete(self):
"""Delete host in OpenNebula."""
if self.template.state != "DONE":
self.check_if_is_save_as_done()
if self.one_id and self.state != 'DONE':
proc = subprocess.Popen(["/opt/occi.sh", "compute", "delete",
"%d" % self.one_id], stdout=subprocess.PIPE)
(out, err) = proc.communicate()
self.waiting = True
self.save()
from .tasks import DeleteInstanceTask
DeleteInstanceTask.delay(one_id=self.one_id)
self.firewall_host_delete()
def firewall_host_delete(self):
......@@ -622,28 +616,10 @@ class Instance(models.Model):
pass
h.delete()
def _update_vm(self, template):
out = ""
with tempfile.NamedTemporaryFile(delete=False) as f:
os.chmod(f.name, stat.S_IRUSR|stat.S_IWUSR|stat.S_IRGRP|stat.S_IROTH)
tpl = u"""
<COMPUTE>
<ID>%(id)d</ID>
%(template)s
</COMPUTE>""" % {"id": self.one_id,
"template": template}
f.write(tpl)
f.close()
import subprocess
proc = subprocess.Popen(["/opt/occi.sh", "compute", "update",
f.name], stdout=subprocess.PIPE)
(out, err) = proc.communicate()
os.unlink(f.name)
print "out: " + out
def _change_state(self, new_state):
"""Change host state in OpenNebula."""
self._update_vm("<STATE>" + new_state + "</STATE>")
from .tasks import ChangeInstanceStateTask
ChangeInstanceStateTask.delay(one_id=self.one_id, new_state=new_state)
self.waiting = True
self.save()
......@@ -680,7 +656,8 @@ class Instance(models.Model):
def save_as(self):
"""Save image and shut down."""
imgname = "template-%d-%d" % (self.template.id, self.id)
self._update_vm('<DISK id="0"><SAVE_AS name="%s"/></DISK>' % imgname)
from .tasks import SaveAsTask
SaveAsTask.delay(one_id=self.one_id, new_img=imgname)
self._change_state("SHUTDOWN")
self.save()
t = self.template
......@@ -701,22 +678,9 @@ class Instance(models.Model):
self.firewall_host_delete()
return True
def delete_instance(sender, instance, using, **kwargs):
if instance.state != "DONE":
def delete_instance_pre(sender, instance, using, **kwargs):
if instance.state != 'DONE':
instance.one_delete()
try:
instance.firewall_host_delete()
except:
pass
post_delete.connect(delete_instance, sender=Instance,
dispatch_uid="delete_instance")
def delete_instance_pre(sender, instance, using, **kwargs):
try:
if instance.template.state != "DONE":
instance.check_if_is_save_as_done()
except:
pass
pre_delete.connect(delete_instance_pre, sender=Instance,
dispatch_uid="delete_instance_pre")
var toggleDetails;
$(function() {
toggleDetails = cloud.throttle(function() {
toggleDetails = function() {
if ($(this).parent('.entry').hasClass('opened')) {
$(this).parent('.entry').removeClass('opened');
$(this).next('.details').slideUp(700);
$(this).next('.details').css('height', '0px');
} else {
$(this).parent('.entry').addClass('opened');
$(this).next('.details').slideDown(700);
$(this).next('.details').css('height',
$(this).next('.details').find('.details-container')[0].offsetHeight+15+'px');
}
}
})
$('a[href=#]').click(function(e) {
e.preventDefault();
});
......
......@@ -273,13 +273,17 @@
z-index: 2;
position: relative;
}
.details {
height: auto;
}
}
&.opened #new-folder-form {
display: block;
}
.details {
border-top: 1px solid #888;
display: none;
height: 0px;
.vendor(transition, height 700ms);
overflow: hidden;
.container {
padding: 5px 5px;
.upload-zone {
......@@ -314,6 +318,9 @@
a {
text-decoration: underline;
}
.details-container {
border-top: 1px solid #888;
}
.name {
float: none;
background-image: url(/static/icons/computer.png);
......
from celery.task import Task, PeriodicTask
from celery.task import Task
import logging
import celery
import os
import sys
import time
from django.core.mail import send_mail
from django.conf import settings
from one.models import Instance
logger = logging.getLogger(__name__)
class SendMailTask(Task):
def run(self, to, subject, msg, sender=u'noreply@cloud.ik.bme.hu'):
send_mail(subject, msg, sender, [ to ], fail_silently=False)
logger.info("[django][one][tasks.py] %s->%s [%s]" % (sender, to, subject) )
def run(self, to, subject, msg, sender=None):
if sender is None:
if settings.SITE_NAME:
sender = '"%s" <%s>' % (settings.SITE_NAME.replace('"', ''),
settings.DEFAULT_FROM_EMAIL)
else:
sender = settings.DEFAULT_FROM_EMAIL
send_mail(subject, msg, sender, [to, ], fail_silently=False)
logger.info("[django][one][tasks] %s->%s %s" % (sender, to, subject))
class UpdateInstanceStateTask(Task):
def run(self, one_id):
def run(self, one_id, new_state):
print one_id
try:
inst = Instance.objects.get(one_id=one_id)
except:
print 'nincs ilyen'
return
inst.update_state()
inst.state = new_state
inst.waiting = False
inst.save()
if inst.template.state == 'SAVING':
inst.check_if_is_save_as_done()
print inst.state
# ezek csak azert vannak felveve, hogy szepen meg lehessen hivni oket
# ezeket a fejgepen futo celery futtatja
class CreateInstanceTask(Task):
def run(self, name, instance_type, disk_id, network_id, ctx):
pass
class DeleteInstanceTask(Task):
def run(self, one_id):
pass
class ChangeInstanceStateTask(Task):
def run(self, one_id, new_state):
pass
class SaveAsTask(Task):
def run(self, one_id, new_img):
pass
class UpdateDiskTask(Task):
def run(self):
pass
class UpdateNetworkTask(Task):
def run(self):
pass
......@@ -3,7 +3,7 @@
{% block body %}
{% blocktrans with vm=instance.name state=instance.state|lower date=instance.time_of_delete time=exp|timeuntil %}
{% blocktrans with vm=instance.name state=instance.state|lower date=instance.time_of_delete time=instance.time_of_delete|timeuntil %}
Your {{state}} virtual machine "{{vm}}" is going to be DELETED
at {{date}} (in {{time}}).
{% endblocktrans %}
......
......@@ -3,7 +3,7 @@
{% block body %}
{% blocktrans with vm=instance.name state=instance.state|lower date=instance.time_of_suspend time=exp|timeuntil url=url %}
{% blocktrans with vm=instance.name state=instance.state|lower date=instance.time_of_suspend time=instance.time_of_suspend|timeuntil url=url %}
Your {{state}} virtual machine "{{vm}}" is going to be STOPPED
at {{date}} (in {{time}}).
{% endblocktrans %}
......
......@@ -16,11 +16,10 @@ from django.template import RequestContext
from django.template.loader import render_to_string
from django.utils.decorators import method_decorator
from django.utils.translation import get_language as lang
from django.utils.translation import ugettext_lazy as _, ungettext_lazy
from django.utils.translation import ugettext_lazy as _
from django.views.decorators.http import *
from django.views.generic import *
from firewall.tasks import *
from cloud.settings import store_settings
from one.models import *
from school.models import *
import django.contrib.auth as auth
......@@ -28,6 +27,7 @@ import json
import logging
import subprocess
store_settings = settings.STORE_SETTINGS
logger = logging.getLogger(__name__)
def _list_instances(request):
......@@ -147,9 +147,19 @@ class AjaxTemplateEditWizard(View):
}))
def post(self, request, id, *args, **kwargs):
template = get_object_or_404(Template, id=id)
user_details = UserCloudDetails.objects.get(user=request.user)
if template.owner != request.user and not template.public and not request.user.is_superuser:
raise PermissionDenied()
template.instance_type_id = request.POST['size']
instance_type = get_object_or_404(InstanceType, id=request.POST['size'])
current_used_share_quota = user_details.get_weighted_share_count()
current_used_share_quota_without_template = current_used_share_quota - template.get_share_quota_usage_for(request.user)
new_quota_for_current_template = template.get_share_quota_usage_for_user_with_type(instance_type, request.user)
new_used_share_quota = current_used_share_quota_without_template + new_quota_for_current_template
allow_type_modify = True if new_used_share_quota <= user_details.share_quota else False
if not allow_type_modify:
messages.error(request, _('You do not have enough free share quota.'))
return redirect(home)
template.instance_type = instance_type
template.description = request.POST['description']
template.name = request.POST['name']
template.save()
......@@ -208,7 +218,11 @@ ajax_share_wizard = login_required(AjaxShareWizard.as_view())
class AjaxShareEditWizard(View):
def get(self, request, id, *args, **kwargs):
det = UserCloudDetails.objects.get(user=request.user)
if det.get_weighted_share_count() >= det.share_quota:
if det.get_weighted_share_count() > det.share_quota:
logger.warning('[one] User %s ha more used share quota, than its limit, how is that possible? (%d > %d)',
str(request.user),
det.get_weighted_share_count(),
det.share_quota)
return HttpResponse(unicode(_('You do not have any free share quota.')))
types = TYPES_L
for i, t in enumerate(types):
......@@ -228,16 +242,21 @@ class AjaxShareEditWizard(View):
stype = request.POST['type']
if not stype in TYPES.keys():
raise PermissionDenied()
il = request.POST['instance_limit']
if det.get_weighted_share_count() + int(il)*share.template.instance_type.credit > det.share_quota:
instance_limit = int(request.POST['instance_limit'])
current_used_share_quota = det.get_weighted_share_count()
current_used_share_quota_without_current_share = current_used_share_quota - share.get_used_quota()
new_quota_for_current_share = instance_limit * share.template.get_credits_per_instance()
new_used_share_quota = current_used_share_quota_without_current_share + new_quota_for_current_share
allow_stype_modify = True if new_used_share_quota <= det.share_quota else False
if not allow_stype_modify:
messages.error(request, _('You do not have enough free share quota.'))
return redirect('/')
share.name=request.POST['name']
share.description=request.POST['description']
share.type=stype
share.instance_limit=il
share.per_user_limit=request.POST['per_user_limit']
share.owner=request.user
return redirect(share.group)
share.name = request.POST['name']
share.description = request.POST['description']
share.type = stype
share.instance_limit = instance_limit
share.per_user_limit = request.POST['per_user_limit']
share.owner = request.user
share.save()
messages.success(request, _('Successfully edited share %s.') % share)
return redirect(share.group)
......@@ -300,7 +319,7 @@ def _check_quota(request, template, share):
@login_required
def vm_new(request, template=None, share=None, redir=True):
base = None
extra = None
extra = ''
if template:
base = get_object_or_404(Template, pk=template)
else:
......@@ -460,7 +479,7 @@ class VmDeleteView(View):
inst = get_object_or_404(Instance, id=iid, owner=request.user)
if inst.template.state != 'READY' and inst.template.owner == request.user:
inst.template.delete()
inst.delete()
inst.one_delete()
messages.success(request, _('Virtual machine is successfully deleted.'))
except:
messages.error(request, _('Failed to delete virtual machine.'))
......@@ -484,21 +503,12 @@ def vm_unshare(request, id, *args, **kwargs):
if not g.owners.filter(user=request.user).exists():
raise PermissionDenied()
try:
n = s.get_running()
m = s.get_running_or_stopped()
if n > 0:
messages.error(request, ungettext_lazy('There is a machine running of this share.',
'There are %(n)d machines running of this share.', n) %
{'n' : n})
elif m > 0:
messages.error(request, ungettext_lazy('There is a suspended machine of this share.',
'There are %(m)d suspended machines of this share.', m) %
{'m' : m})
if s.get_running_or_stopped() > 0:
messages.error(request, _('There are machines running of this share.'))
else:
s.delete()
messages.success(request, _('Share is successfully removed.'))
except Exception as e:
print e
except:
messages.error(request, _('Failed to remove share.'))
return redirect(g)
......@@ -533,7 +543,6 @@ def vm_renew(request, which, iid, *args, **kwargs):
try:
vm = get_object_or_404(Instance, id=iid, owner=request.user)
vm.renew()
messages.success(request, _('Virtual machine is successfully renewed.'))
except:
messages.error(request, _('Failed to renew virtual machine.'))
return redirect('/')
......
from django.test import TestCase
from models import create_user_profile, Person, Course, Semester
from models import create_user_profile, Person, Course, Semester, Group
from datetime import datetime, timedelta
class MockUser:
......@@ -55,11 +55,12 @@ class PersonTestCase(TestCase):
class CourseTestCase(TestCase):
def setUp(self):
now = datetime.now()
date = now.date()
delta = timedelta(weeks=7)
self.testperson1 = Person.objects.create(code="testperson1")
self.testperson2 = Person.objects.create(code="testperson2")
self.testsemester = Semester.objects.create(name="testsemester",
start=now-delta, end=now+delta)
start=date-delta, end=date+delta)
self.testcourse = Course.objects.create(code="testcode",
name="testname", short_name="tn")
self.testcourse.owners.add(self.testperson1, self.testperson2)
......@@ -72,3 +73,55 @@ class CourseTestCase(TestCase):
def test_owner_list(self):
owner_list = self.testcourse.owner_list()
self.assertIsNotNone(owner_list)
class SemesterTestCase(TestCase):
def setUp(self):
now = datetime.now()
date = now.date()
self.now = now
delta = timedelta(weeks=7)
self.last_semester = Semester.objects.create(name="testsem1",
start=date-3*delta, end=date-delta)
self.current_semester = Semester.objects.create(name="testsem2",
start=date-delta, end=date+delta)
self.next_semester = Semester.objects.create(name="testsem3",
start=date+delta, end=date+3*delta)
def test_is_on(self):
self.assertFalse(self.last_semester.is_on(self.now))
self.assertTrue(self.current_semester.is_on(self.now))
self.assertFalse(self.next_semester.is_on(self.now))
def test_get_current(self):
self.assertEqual(self.current_semester, Semester.get_current())
def test_unicode(self):
self.current_semester.__unicode__()
class GroupTestCase(TestCase):
def setUp(self):
date = datetime.now().date()
delta = timedelta(weeks=7)
semester = Semester.objects.create(name="testsem",
start=date-delta, end=date+delta)
self.testgroup = Group.objects.create(name="testgrp",
semester=semester)
def test_owner_list(self):
self.assertIsNotNone(self.testgroup.owner_list())
testowner1 = Person.objects.create(code="testprsn1")
self.testgroup.owners.add(testowner1)
self.assertIsNotNone(self.testgroup.owner_list())
testowner2 = Person.objects.create(code="testprsn2")
self.testgroup.owners.add(testowner2)
self.assertIsNotNone(self.testgroup.owner_list())
self.assertIn(", ", self.testgroup.owner_list())
def test_member_count(self):
self.assertEqual(0, self.testgroup.member_count())
testmember1 = Person.objects.create(code="testprsn3")
self.testgroup.members.add(testmember1)
self.assertEqual(1, self.testgroup.member_count())
testmember2 = Person.objects.create(code="testprsn4")
self.testgroup.members.add(testmember2)
self.assertEqual(2, self.testgroup.member_count())
from django.db import models
from django.http import Http404
import json, requests, time
from cloud.settings import store_settings as settings
import django.conf
settings = django.conf.settings.STORE_SETTINGS
# Create your models here.
#TODO Handle exceptions locally
......
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