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webvirtcloud/instances/views.py
2015-03-16 11:57:55 +02:00

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15 KiB
Python

from string import letters, digits
from random import choice
from bisect import insort
from django.http import HttpResponseRedirect
from django.core.urlresolvers import reverse
from django.shortcuts import render
from django.utils.translation import ugettext_lazy as _
from computes.models import Compute
from instances.models import Instance
from users.models import UserInstance
from vrtManager.hostdetails import wvmHostDetails
from vrtManager.instance import wvmInstance, wvmInstances
from vrtManager.connection import connection_manager
from libvirt import libvirtError, VIR_DOMAIN_XML_SECURE
from webvirtcloud.settings import QEMU_KEYMAPS, QEMU_CONSOLE_TYPES
def index(request):
"""
:param request:
:return:
"""
if not request.user.is_authenticated():
return HttpResponseRedirect(reverse('login'))
else:
return HttpResponseRedirect(reverse('instances'))
def instances(request):
"""
:param request:
:return:
"""
if not request.user.is_authenticated():
return HttpResponseRedirect(reverse('index'))
error_messages = []
all_host_vms = {}
all_user_vms = {}
computes = Compute.objects.all()
if not request.user.is_superuser:
user_instances = UserInstance.objects.all()
for usr_inst in user_instances:
if connection_manager.host_is_up(usr_inst.instance.compute.type,
usr_inst.instance.compute.hostname):
conn = wvmHostDetails(usr_inst.instance.compute,
usr_inst.instance.compute.login,
usr_inst.instance.compute.password,
usr_inst.instance.compute.type)
all_user_vms[usr_inst] = conn.get_user_instances(usr_inst.instance.name)
all_user_vms[usr_inst].update({'compute_id': usr_inst.instance.compute.id})
else:
for comp in computes:
if connection_manager.host_is_up(comp.type, comp.hostname):
try:
conn = wvmHostDetails(comp, comp.login, comp.password, comp.type)
all_host_vms[comp.id, comp.name] = conn.get_host_instances()
for vm, info in conn.get_host_instances().items():
try:
check_uuid = Instance.objects.get(compute_id=comp.id, name=vm)
if check_uuid.uuid != info['uuid']:
check_uuid.save()
except Instance.DoesNotExist:
check_uuid = Instance(compute_id=comp.id, name=vm, uuid=info['uuid'])
check_uuid.save()
conn.close()
except libvirtError as lib_err:
error_messages.append(lib_err)
if request.method == 'POST':
name = request.POST.get('name', '')
compute_id = request.POST.get('compute_id', '')
compute = Compute.objects.get(id=compute_id)
try:
conn = wvmInstances(compute.hostname,
compute.login,
compute.password,
compute.type)
if 'start' in request.POST:
conn.start(name)
return HttpResponseRedirect(request.get_full_path())
if 'destroy' in request.POST:
conn.force_shutdown(name)
return HttpResponseRedirect(request.get_full_path())
if 'suspend' in request.POST:
conn.suspend(name)
return HttpResponseRedirect(request.get_full_path())
if 'resume' in request.POST:
conn.resume(name)
return HttpResponseRedirect(request.get_full_path())
except libvirtError as lib_err:
error_messages.append(lib_err)
return render(request, 'instances.html', locals())
def instance(request, compute_id, vname):
"""
:param request:
:return:
"""
if not request.user.is_authenticated():
return HttpResponseRedirect(reverse('index'))
error_messages = []
messages = []
compute = Compute.objects.get(id=compute_id)
computes = Compute.objects.all()
computes_count = len(computes)
keymaps = QEMU_KEYMAPS
console_types = QEMU_CONSOLE_TYPES
try:
userinstace = UserInstance.objects.get(instance__compute_id=compute_id,
instance__name=vname,
user__id=request.user.id)
except UserInstance.DoesNotExist:
userinstace = None
if not request.user.is_superuser:
if not userinstace:
return HttpResponseRedirect(reverse('index'))
def show_clone_disk(disks):
clone_disk = []
for disk in disks:
if disk['image'] is None:
continue
if disk['image'].count(".") and len(disk['image'].rsplit(".", 1)[1]) <= 7:
name, suffix = disk['image'].rsplit(".", 1)
image = name + "-clone" + "." + suffix
else:
image = disk['image'] + "-clone"
clone_disk.append(
{'dev': disk['dev'], 'storage': disk['storage'], 'image': image, 'format': disk['format']})
return clone_disk
try:
conn = wvmInstance(compute.hostname,
compute.login,
compute.password,
compute.type,
vname)
status = conn.get_status()
autostart = conn.get_autostart()
vcpu = conn.get_vcpu()
cur_vcpu = conn.get_cur_vcpu()
uuid = conn.get_uuid()
memory = conn.get_memory()
cur_memory = conn.get_cur_memory()
description = conn.get_description()
disks = conn.get_disk_device()
media = conn.get_media_device()
networks = conn.get_net_device()
media_iso = sorted(conn.get_iso_media())
vcpu_range = conn.get_max_cpus()
memory_range = [256, 512, 768, 1024, 2048, 4096, 6144, 8192, 16384]
if memory not in memory_range:
insort(memory_range, memory)
if cur_memory not in memory_range:
insort(memory_range, cur_memory)
memory_host = conn.get_max_memory()
vcpu_host = len(vcpu_range)
telnet_port = conn.get_telnet_port()
console_type = conn.get_console_type()
console_port = conn.get_console_port()
console_keymap = conn.get_console_keymap()
snapshots = sorted(conn.get_snapshot(), reverse=True)
inst_xml = conn._XMLDesc(VIR_DOMAIN_XML_SECURE)
has_managed_save_image = conn.get_managed_save_image()
clone_disks = show_clone_disk(disks)
console_passwd = conn.get_console_passwd()
try:
instance = Instance.objects.get(compute_id=compute_id, name=vname)
if instance.uuid != uuid:
instance.uuid = uuid
instance.save()
except Instance.DoesNotExist:
instance = Instance(compute_id=compute_id, name=vname, uuid=uuid)
instance.save()
if request.method == 'POST':
if 'poweron' in request.POST:
conn.start()
return HttpResponseRedirect(request.get_full_path() + '#poweron')
if 'powercycle' in request.POST:
conn.force_shutdown()
conn.start()
return HttpResponseRedirect(request.get_full_path() + '#powercycle')
if 'poweroff' == request.POST.get('power', ''):
conn.shutdown()
return HttpResponseRedirect(request.get_full_path() + '#poweroff')
if 'suspend' in request.POST:
conn.suspend()
return HttpResponseRedirect(request.get_full_path() + '#resume')
if 'resume' in request.POST:
conn.resume()
return HttpResponseRedirect(request.get_full_path() + '#suspend')
if 'delete' in request.POST:
if conn.get_status() == 1:
conn.force_shutdown()
try:
instance = Instance.objects.get(compute_id=compute_id, name=vname)
instance.delete()
if request.POST.get('delete_disk', ''):
conn.delete_disk()
finally:
if not request.user.is_superuser:
del_userinstance = UserInstance.objects.get(id=userinstace.id)
del_userinstance.delete()
else:
try:
del_userinstance = UserInstance.objects.filter(instance__compute_id=compute_id, instance__name=vname)
del_userinstance.save()
except UserInstance.DoesNotExist:
pass
conn.delete()
return HttpResponseRedirect(reverse('instances'))
if 'snapshot' in request.POST:
name = request.POST.get('name', '')
conn.create_snapshot(name)
return HttpResponseRedirect(request.get_full_path() + '#istaceshapshosts')
if 'umount_iso' in request.POST:
image = request.POST.get('path', '')
dev = request.POST.get('umount_iso', '')
conn.umount_iso(dev, image)
return HttpResponseRedirect(request.get_full_path() + '#instancemedia')
if 'mount_iso' in request.POST:
image = request.POST.get('media', '')
dev = request.POST.get('mount_iso', '')
conn.mount_iso(dev, image)
return HttpResponseRedirect(request.get_full_path() + '#instancemedia')
if 'set_autostart' in request.POST:
conn.set_autostart(1)
return HttpResponseRedirect(request.get_full_path() + '#instancesettings')
if 'unset_autostart' in request.POST:
conn.set_autostart(0)
return HttpResponseRedirect(request.get_full_path() + '#instancesettings')
if 'resize' in request.POST:
description = request.POST.get('description', '')
vcpu = request.POST.get('vcpu', '')
cur_vcpu = request.POST.get('cur_vcpu', '')
memory = request.POST.get('memory', '')
memory_custom = request.POST.get('memory_custom', '')
if memory_custom:
memory = memory_custom
cur_memory = request.POST.get('cur_memory', '')
cur_memory_custom = request.POST.get('cur_memory_custom', '')
if cur_memory_custom:
cur_memory = cur_memory_custom
conn.resize(cur_memory, memory, cur_vcpu, vcpu)
return HttpResponseRedirect(request.get_full_path() + '#instancesettings')
if 'change_xml' in request.POST:
exit_xml = request.POST.get('inst_xml', '')
if exit_xml:
conn._defineXML(exit_xml)
return HttpResponseRedirect(request.get_full_path() + '#instancexml')
if 'set_console_passwd' in request.POST:
if request.POST.get('auto_pass', ''):
passwd = ''.join([choice(letters + digits) for i in xrange(12)])
else:
passwd = request.POST.get('console_passwd', '')
clear = request.POST.get('clear_pass', False)
if clear:
passwd = ''
if not passwd and not clear:
msg = _("Enter the console password or select Generate")
error_messages.append(msg)
if not error_messages:
if not conn.set_console_passwd(passwd):
msg = _("Error setting console password. You should check that your instance have an graphic device.")
error_messages.append(msg)
else:
return HttpResponseRedirect(request.get_full_path() + '#console_pass')
if 'set_console_keymap' in request.POST:
keymap = request.POST.get('console_keymap', '')
clear = request.POST.get('clear_keymap', False)
if clear:
conn.set_console_keymap('')
else:
conn.set_console_keymap(keymap)
return HttpResponseRedirect(request.get_full_path() + '#console_keymap')
if 'set_console_type' in request.POST:
console_type = request.POST.get('console_type', '')
conn.set_console_type(console_type)
return HttpResponseRedirect(request.get_full_path() + '#console_type')
if 'migrate' in request.POST:
compute_id = request.POST.get('compute_id', '')
live = request.POST.get('live_migrate', False)
unsafe = request.POST.get('unsafe_migrate', False)
xml_del = request.POST.get('xml_delete', False)
new_compute = Compute.objects.get(id=compute_id)
conn_migrate = wvmInstances(new_compute.hostname,
new_compute.login,
new_compute.password,
new_compute.type)
conn_migrate.moveto(conn, vname, live, unsafe, xml_del)
conn_migrate.define_move(vname)
conn_migrate.close()
return HttpResponseRedirect(reverse('instance', args=[compute_id, vname]))
if 'delete_snapshot' in request.POST:
snap_name = request.POST.get('name', '')
conn.snapshot_delete(snap_name)
return HttpResponseRedirect(request.get_full_path() + '#istaceshapshosts')
if 'revert_snapshot' in request.POST:
snap_name = request.POST.get('name', '')
conn.snapshot_revert(snap_name)
msg = _("Successful revert snapshot: ")
msg += snap_name
messages.append(msg)
if 'clone' in request.POST:
clone_data = {}
clone_data['name'] = request.POST.get('name', '')
for post in request.POST:
if 'disk' or 'meta' in post:
clone_data[post] = request.POST.get(post, '')
conn.clone_instance(clone_data)
return HttpResponseRedirect(reverse('instance', args=[compute_id, clone_data['name']]))
conn.close()
except libvirtError as lib_err:
error_messages.append(lib_err)
return render(request, 'instance.html', locals())