template.py 16.2 KB
Newer Older
Őry Máté committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
# Copyright 2014 Budapest University of Technology and Economics (BME IK)
#
# This file is part of CIRCLE Cloud.
#
# CIRCLE is free software: you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free
# Software Foundation, either version 3 of the License, or (at your option)
# any later version.
#
# CIRCLE is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
# details.
#
# You should have received a copy of the GNU General Public License along
# with CIRCLE.  If not, see <http://www.gnu.org/licenses/>.
from __future__ import unicode_literals, absolute_import

import json
import logging

from django.contrib import messages
from django.contrib.auth.models import User
from django.contrib.messages.views import SuccessMessageMixin
from django.core.urlresolvers import reverse, reverse_lazy
from django.core.exceptions import PermissionDenied, SuspiciousOperation
Őry Máté committed
27
from django.http import HttpResponse, HttpResponseRedirect
Őry Máté committed
28 29 30 31 32 33 34 35 36 37 38 39
from django.shortcuts import redirect, get_object_or_404
from django.utils.translation import ugettext as _
from django.views.generic import (
    TemplateView, CreateView, DeleteView, UpdateView,
)

from braces.views import (
    LoginRequiredMixin, PermissionRequiredMixin, SuperuserRequiredMixin,
)
from django_tables2 import SingleTableView

from vm.models import InstanceTemplate, InterfaceTemplate, Instance, Lease
40
from storage.models import Disk
Őry Máté committed
41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148

from ..forms import (
    TemplateForm, TemplateListSearchForm, AclUserOrGroupAddForm, LeaseForm,
)
from ..tables import TemplateListTable, LeaseListTable

from .util import AclUpdateView, FilterMixin

logger = logging.getLogger(__name__)


class TemplateChoose(LoginRequiredMixin, TemplateView):

    def get_template_names(self):
        if self.request.is_ajax():
            return ['dashboard/modal-wrapper.html']
        else:
            return ['dashboard/nojs-wrapper.html']

    def get_context_data(self, *args, **kwargs):
        context = super(TemplateChoose, self).get_context_data(*args, **kwargs)
        templates = InstanceTemplate.get_objects_with_level("user",
                                                            self.request.user)
        context.update({
            'box_title': _('Choose template'),
            'ajax_title': True,
            'template': "dashboard/_template-choose.html",
            'templates': templates.all(),
        })
        return context

    def post(self, request, *args, **kwargs):
        if not request.user.has_perm('vm.create_template'):
            raise PermissionDenied()

        template = request.POST.get("parent")
        if template == "base_vm":
            return redirect(reverse("dashboard.views.template-create"))
        elif template is None:
            messages.warning(request, _("Select an option to proceed."))
            return redirect(reverse("dashboard.views.template-choose"))
        else:
            template = get_object_or_404(InstanceTemplate, pk=template)

        if not template.has_level(request.user, "user"):
            raise PermissionDenied()

        instance = Instance.create_from_template(
            template=template, owner=request.user, is_base=True)

        return redirect(instance.get_absolute_url())


class TemplateCreate(SuccessMessageMixin, CreateView):
    model = InstanceTemplate
    form_class = TemplateForm

    def get_template_names(self):
        if self.request.is_ajax():
            pass
        else:
            return ['dashboard/nojs-wrapper.html']

    def get_context_data(self, *args, **kwargs):
        context = super(TemplateCreate, self).get_context_data(*args, **kwargs)

        num_leases = Lease.get_objects_with_level("operator",
                                                  self.request.user).count()
        can_create_leases = self.request.user.has_perm("create_leases")
        context.update({
            'box_title': _("Create a new base VM"),
            'template': "dashboard/_template-create.html",
            'show_lease_create': num_leases < 1 and can_create_leases
        })
        return context

    def get(self, *args, **kwargs):
        if not self.request.user.has_perm('vm.create_base_template'):
            raise PermissionDenied()

        return super(TemplateCreate, self).get(*args, **kwargs)

    def get_form_kwargs(self):
        kwargs = super(TemplateCreate, self).get_form_kwargs()
        kwargs['user'] = self.request.user
        return kwargs

    def post(self, request, *args, **kwargs):
        if not self.request.user.has_perm('vm.create_base_template'):
            raise PermissionDenied()

        form = self.form_class(request.POST, user=request.user)
        if not form.is_valid():
            return self.get(request, form, *args, **kwargs)
        else:
            post = form.cleaned_data
            networks = self.__create_networks(post.pop("networks"),
                                              request.user)
            post.pop("parent")
            post['max_ram_size'] = post['ram_size']
            req_traits = post.pop("req_traits")
            tags = post.pop("tags")
            post['pw'] = User.objects.make_random_password()
            post['is_base'] = True
            inst = Instance.create(params=post, disks=[],
                                   networks=networks,
                                   tags=tags, req_traits=req_traits)

Őry Máté committed
149 150
            return HttpResponseRedirect("%s#resources" %
                                        inst.get_absolute_url())
Őry Máté committed
151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259

    def __create_networks(self, vlans, user):
        networks = []
        for v in vlans:
            if not v.has_level(user, "user"):
                raise PermissionDenied()
            networks.append(InterfaceTemplate(vlan=v, managed=v.managed))
        return networks

    def get_success_url(self):
        return reverse_lazy("dashboard.views.template-list")


class TemplateAclUpdateView(AclUpdateView):
    model = InstanceTemplate


class TemplateList(LoginRequiredMixin, FilterMixin, SingleTableView):
    template_name = "dashboard/template-list.html"
    model = InstanceTemplate
    table_class = TemplateListTable
    table_pagination = False

    allowed_filters = {
        'name': "name__icontains",
        'tags[]': "tags__name__in",
        'tags': "tags__name__in",  # for search string
        'owner': "owner__username",
        'ram': "ram_size",
        'ram_size': "ram_size",
        'cores': "num_cores",
        'num_cores': "num_cores",
        'access_method': "access_method__iexact",
    }

    def get_context_data(self, *args, **kwargs):
        context = super(TemplateList, self).get_context_data(*args, **kwargs)
        user = self.request.user
        leases_w_operator = Lease.get_objects_with_level("operator", user)
        context['lease_table'] = LeaseListTable(
            leases_w_operator, request=self.request,
            template="django_tables2/table_no_page.html",
        )
        context['show_lease_table'] = (
            leases_w_operator.count() > 0 or
            user.has_perm("vm.create_leases")
        )

        context['search_form'] = self.search_form

        return context

    def get(self, *args, **kwargs):
        self.search_form = TemplateListSearchForm(self.request.GET)
        self.search_form.full_clean()
        return super(TemplateList, self).get(*args, **kwargs)

    def create_acl_queryset(self, model):
        queryset = super(TemplateList, self).create_acl_queryset(model)
        sql = ("SELECT count(*) FROM vm_instance WHERE "
               "vm_instance.template_id = vm_instancetemplate.id and "
               "vm_instance.destroyed_at is null and "
               "vm_instance.status = 'RUNNING'")
        queryset = queryset.extra(select={'running': sql})
        return queryset

    def get_queryset(self):
        logger.debug('TemplateList.get_queryset() called. User: %s',
                     unicode(self.request.user))
        qs = self.create_acl_queryset(InstanceTemplate)
        self.create_fake_get()

        try:
            qs = qs.filter(**self.get_queryset_filters()).distinct()
        except ValueError:
            messages.error(self.request, _("Error during filtering."))

        return qs.select_related("lease", "owner", "owner__profile")


class TemplateDelete(LoginRequiredMixin, DeleteView):
    model = InstanceTemplate

    def get_success_url(self):
        return reverse("dashboard.views.template-list")

    def get_template_names(self):
        if self.request.is_ajax():
            return ['dashboard/confirm/ajax-delete.html']
        else:
            return ['dashboard/confirm/base-delete.html']

    def delete(self, request, *args, **kwargs):
        object = self.get_object()
        if not object.has_level(request.user, 'owner'):
            raise PermissionDenied()

        object.destroy_disks()
        object.delete()
        success_url = self.get_success_url()
        success_message = _("Template successfully deleted.")

        if request.is_ajax():
            return HttpResponse(
                json.dumps({'message': success_message}),
                content_type="application/json",
            )
        else:
            messages.success(request, success_message)
Őry Máté committed
260
            return HttpResponseRedirect(success_url)
Őry Máté committed
261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303


class TemplateDetail(LoginRequiredMixin, SuccessMessageMixin, UpdateView):
    model = InstanceTemplate
    template_name = "dashboard/template-edit.html"
    form_class = TemplateForm
    success_message = _("Successfully modified template.")

    def get(self, request, *args, **kwargs):
        template = self.get_object()
        if not template.has_level(request.user, 'user'):
            raise PermissionDenied()
        if request.is_ajax():
            template = {
                'num_cores': template.num_cores,
                'ram_size': template.ram_size,
                'priority': template.priority,
                'arch': template.arch,
                'description': template.description,
                'system': template.system,
                'name': template.name,
                'disks': [{'pk': d.pk, 'name': d.name}
                          for d in template.disks.all()],
                'network': [
                    {'vlan_pk': i.vlan.pk, 'vlan': i.vlan.name,
                     'managed': i.managed}
                    for i in InterfaceTemplate.objects.filter(
                        template=self.get_object()).all()
                ]
            }
            return HttpResponse(json.dumps(template),
                                content_type="application/json")
        else:
            return super(TemplateDetail, self).get(request, *args, **kwargs)

    def get_context_data(self, **kwargs):
        obj = self.get_object()
        context = super(TemplateDetail, self).get_context_data(**kwargs)
        context['acl'] = AclUpdateView.get_acl_data(
            obj, self.request.user, 'dashboard.views.template-acl')
        context['disks'] = obj.disks.all()
        context['is_owner'] = obj.has_level(self.request.user, 'owner')
        context['aclform'] = AclUserOrGroupAddForm()
304
        context['parent'] = obj.parent
Őry Máté committed
305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322
        return context

    def get_success_url(self):
        return reverse_lazy("dashboard.views.template-detail",
                            kwargs=self.kwargs)

    def post(self, request, *args, **kwargs):
        template = self.get_object()
        if not template.has_level(request.user, 'owner'):
            raise PermissionDenied()
        return super(TemplateDetail, self).post(self, request, args, kwargs)

    def get_form_kwargs(self):
        kwargs = super(TemplateDetail, self).get_form_kwargs()
        kwargs['user'] = self.request.user
        return kwargs


323 324 325
class DiskRemoveView(DeleteView):
    model = Disk

326 327 328 329
    def get_queryset(self):
        qs = super(DiskRemoveView, self).get_queryset()
        return qs.exclude(template_set=None)

330 331 332 333 334 335 336 337 338
    def get_template_names(self):
        if self.request.is_ajax():
            return ['dashboard/confirm/ajax-delete.html']
        else:
            return ['dashboard/confirm/base-delete.html']

    def get_context_data(self, **kwargs):
        context = super(DiskRemoveView, self).get_context_data(**kwargs)
        disk = self.get_object()
339 340 341
        template = disk.template_set.get()
        if not template.has_level(self.request.user, 'owner'):
            raise PermissionDenied()
342 343 344 345
        context['title'] = _("Disk remove confirmation")
        context['text'] = _("Are you sure you want to remove "
                            "<strong>%(disk)s</strong> from "
                            "<strong>%(app)s</strong>?" % {'disk': disk,
346
                                                           'app': template}
347 348 349 350 351
                            )
        return context

    def delete(self, request, *args, **kwargs):
        disk = self.get_object()
352
        template = disk.template_set.get()
353

354
        if not template.has_level(request.user, 'owner'):
355 356
            raise PermissionDenied()

357
        template.remove_disk(disk=disk, user=request.user)
358 359 360
        disk.destroy()

        next_url = request.POST.get("next")
361
        success_url = next_url if next_url else template.get_absolute_url()
362 363 364 365 366 367 368 369 370 371 372 373
        success_message = _("Disk successfully removed.")

        if request.is_ajax():
            return HttpResponse(
                json.dumps({'message': success_message}),
                content_type="application/json",
            )
        else:
            messages.success(request, success_message)
            return HttpResponseRedirect("%s#resources" % success_url)


Őry Máté committed
374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450
class LeaseCreate(LoginRequiredMixin, PermissionRequiredMixin,
                  SuccessMessageMixin, CreateView):
    model = Lease
    form_class = LeaseForm
    permission_required = 'vm.create_leases'
    template_name = "dashboard/lease-create.html"
    success_message = _("Successfully created a new lease.")

    def get_success_url(self):
        return reverse_lazy("dashboard.views.template-list")


class LeaseAclUpdateView(AclUpdateView):
    model = Lease


class LeaseDetail(LoginRequiredMixin, SuperuserRequiredMixin,
                  SuccessMessageMixin, UpdateView):
    model = Lease
    form_class = LeaseForm
    template_name = "dashboard/lease-edit.html"
    success_message = _("Successfully modified lease.")

    def get_context_data(self, *args, **kwargs):
        obj = self.get_object()
        context = super(LeaseDetail, self).get_context_data(*args, **kwargs)
        context['acl'] = AclUpdateView.get_acl_data(
            obj, self.request.user, 'dashboard.views.lease-acl')
        return context

    def get_success_url(self):
        return reverse_lazy("dashboard.views.lease-detail", kwargs=self.kwargs)


class LeaseDelete(LoginRequiredMixin, SuperuserRequiredMixin, DeleteView):
    model = Lease

    def get_success_url(self):
        return reverse("dashboard.views.template-list")

    def get_template_names(self):
        if self.request.is_ajax():
            return ['dashboard/confirm/ajax-delete.html']
        else:
            return ['dashboard/confirm/base-delete.html']

    def get_context_data(self, *args, **kwargs):
        c = super(LeaseDelete, self).get_context_data(*args, **kwargs)
        lease = self.get_object()
        templates = lease.instancetemplate_set
        if templates.count() > 0:
            text = _("You can't delete this lease because some templates "
                     "are still using it, modify these to proceed: ")

            c['text'] = text + ", ".join("<strong>%s (#%d)</strong>"
                                         "" % (o.name, o.pk)
                                         for o in templates.all())
            c['disable_submit'] = True
        return c

    def delete(self, request, *args, **kwargs):
        object = self.get_object()

        if (object.instancetemplate_set.count() > 0):
            raise SuspiciousOperation()

        object.delete()
        success_url = self.get_success_url()
        success_message = _("Lease successfully deleted.")

        if request.is_ajax():
            return HttpResponse(
                json.dumps({'message': success_message}),
                content_type="application/json",
            )
        else:
            messages.success(request, success_message)
Őry Máté committed
451
            return HttpResponseRedirect(success_url)