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##############################################################################
# Copyright (c) 2018 Parker Berberian, Sawyer Bergeron, and others.
#
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
##############################################################################
import json
from django.db.models import Q
from datetime import timedelta
from django.utils import timezone
from django.form import ValidationException
from account.models import Lab
from resource_inventory.models import (
ResourceTemplate,
Installer,
Image,
OPNFVRole,
OPNFVConfig,
HostOPNFVConfig,
)
from resource_inventory.resource_manager import ResourceManager
from resource_inventory.pdf_templater import PDFTemplater
from notifier.manager import NotificationHandler
from booking.models import Booking
from dashboard.exceptions import BookingLengthException
from api.models import JobFactory
def parse_resource_field(resource_json):
"""
Parse the json from the frontend.
returns a reference to the selected Lab and ResourceTemplate objects
"""
lab, template = (None, None)
lab_dict = resource_json['lab']
for lab_info in lab_dict.values():
if lab_info['selected']:
lab = Lab.objects.get(lab_user__id=lab_info['id'])
resource_dict = resource_json['resource']
for resource_info in resource_dict.values():
if resource_info['selected']:
template = ResourceTemplate.objects.get(pk=resource_info['id'])
if lab is None:
raise ValidationException("No lab was selected")
if template is None:
raise ValidationException("No Host was selected")
return lab, template
def update_template(template, image, lab, hostname):
"""
Update and copy a resource template to the user's profile.
TODO: How, why, should we?
"""
pass
def generate_opnfvconfig(scenario, installer, template):
return OPNFVConfig.objects.create(
scenario=scenario,
installer=installer,
template=template
)
def generate_hostopnfv(hostconfig, opnfvconfig):
role = None
try:
role = OPNFVRole.objects.get(name="Jumphost")
except Exception:
role = OPNFVRole.objects.create(
name="Jumphost",
description="Single server jumphost role"
)
return HostOPNFVConfig.objects.create(
role=role,
host_config=hostconfig,
opnfv_config=opnfvconfig
)
def generate_resource_bundle(template):
resource_manager = ResourceManager.getInstance()
resource_bundle = resource_manager.convertResourceBundle(template)
return resource_bundle
def check_invariants(request, **kwargs):
# TODO: This should really happen in the BookingForm validation methods
installer = kwargs['installer']
image = kwargs['image']
scenario = kwargs['scenario']
lab = kwargs['lab']
host_profile = kwargs['host_profile']
length = kwargs['length']
# check that image os is compatible with installer
if installer in image.os.sup_installers.all():
# if installer not here, we can omit that and not check for scenario
if not scenario:
raise ValidationException("An OPNFV Installer needs a scenario to be chosen to work properly")
if scenario not in installer.sup_scenarios.all():
raise ValidationException("The chosen installer does not support the chosen scenario")
if image.from_lab != lab:
raise ValidationException("The chosen image is not available at the chosen hosting lab")
if image.host_type != host_profile:
raise ValidationException("The chosen image is not available for the chosen host type")
if not image.public and image.owner != request.user:
raise ValidationException("You are not the owner of the chosen private image")
if length < 1 or length > 21:
raise BookingLengthException("Booking must be between 1 and 21 days long")
def create_from_form(form, request):
"""
Create a Booking from the user's form.
Large, nasty method to create a booking or return a useful error
based on the form from the frontend
"""
resource_field = form.cleaned_data['filter_field']
purpose_field = form.cleaned_data['purpose']
project_field = form.cleaned_data['project']
users_field = form.cleaned_data['users']
hostname = form.cleaned_data['hostname']
length = form.cleaned_data['length']
image = form.cleaned_data['image']
scenario = form.cleaned_data['scenario']
installer = form.cleaned_data['installer']
lab, resource_template = parse_resource_field(resource_field)
data = form.cleaned_data
data['lab'] = lab
data['resource_template'] = resource_template
check_invariants(request, **data)
# check booking privileges
# TODO: use the canonical booking_allowed method because now template might have multiple
# machines
if Booking.objects.filter(owner=request.user, end__gt=timezone.now()).count() >= 3 and not request.user.userprofile.booking_privledge:
raise PermissionError("You do not have permission to have more than 3 bookings at a time.")
ResourceManager.getInstance().templateIsReservable(resource_template)
hconf = update_template(resource_template, image, lab, hostname)
# if no installer provided, just create blank host
opnfv_config = None
if installer:
opnfv_config = generate_opnfvconfig(scenario, installer, resource_template)
generate_hostopnfv(hconf, opnfv_config)
# generate resource bundle
resource_bundle = generate_resource_bundle(resource_template)
# generate booking
booking = Booking.objects.create(
purpose=purpose_field,
project=project_field,
lab=lab,
owner=request.user,
start=timezone.now(),
end=timezone.now() + timedelta(days=int(length)),
resource=resource_bundle,
opnfv_config=opnfv_config
)
booking.pdf = PDFTemplater.makePDF(booking)
for collaborator in users_field: # list of UserProfiles
booking.collaborators.add(collaborator.user)
booking.save()
# generate job
JobFactory.makeCompleteJob(booking)
NotificationHandler.notify_new_booking(booking)
return booking
def drop_filter(user):
"""
Return a dictionary that contains filters.
Only certain installlers are supported on certain images, etc
so the image filter indexed at [imageid][installerid] is truthy if
that installer is supported on that image
"""
installer_filter = {}
for image in Image.objects.all():
installer_filter[image.id] = {}
for installer in image.os.sup_installers.all():
installer_filter[image.id][installer.id] = 1
scenario_filter = {}
for installer in Installer.objects.all():
scenario_filter[installer.id] = {}
for scenario in installer.sup_scenarios.all():
scenario_filter[installer.id][scenario.id] = 1
images = Image.objects.filter(Q(public=True) | Q(owner=user))
image_filter = {}
for image in images:
image_filter[image.id] = {
'lab': 'lab_' + str(image.from_lab.lab_user.id),
'host_profile': 'host_' + str(image.host_type.id),
'name': image.name
}
return {'installer_filter': json.dumps(installer_filter),
'scenario_filter': json.dumps(scenario_filter),
'image_filter': json.dumps(image_filter)}
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