Added start/stop functionality for VMs. Refactored a few functions.

This commit is contained in:
M.Ravi 2017-04-11 00:44:55 +05:30
parent c7334dfac2
commit b68fe31361
2 changed files with 58 additions and 60 deletions

View file

@ -6,6 +6,8 @@ from django.template.response import TemplateResponse
from django.conf import settings
from utils.mailer import BaseEmail
from django import template
from django.shortcuts import redirect
from django.contrib import messages
import oca
import socket
from oca.exceptions import OpenNebulaException
@ -13,17 +15,6 @@ from oca.exceptions import OpenNebulaException
from .forms import HostingOrderAdminForm
from .models import VirtualMachineType, VirtualMachinePlan, HostingOrder, ManageVMs
register = template.Library()
def get_vm_state(value):
if value == 1:
return 'PENDING'
#states = {-2: 'Any incl done', -1 : 'Any except done', 0 : 'INIT', 1 : 'PENDING', 2 : 'HOLD', 3 : 'ACTIVE', 4 : 'STOPPED', 5 : 'SUSPENDED', 6 : 'DONE', 7 : 'FAILED'}
#return states.get(value)
return 'UNKNO'
register.filter('get_vm_state', get_vm_state)
class HostingOrderAdmin(admin.ModelAdmin):
# fields = ('slug', 'imdb_link', 'start', 'finish', 'added_by')
list_display = ('id', 'created_at', 'plan', 'user')
@ -113,12 +104,12 @@ class HostingManageVMsAdmin(admin.ModelAdmin):
def get_urls(self):
self.client = oca.Client(settings.OPENNEBULA_USERNAME + ':' + settings.OPENNEBULA_PASSWORD, settings.OPENNEBULA_PROTOCOL + '://' + settings.OPENNEBULA_DOMAIN + ':' + settings.OPENNEBULA_PORT + settings.OPENNEBULA_ENDPOINT)
urls = super().get_urls()
#socket.setdefaulttimeout(5)
my_urls = [
url(r'^$', self.admin_site.admin_view(self.my_view, cacheable=True)),
url(r'^$', self.admin_site.admin_view(self.my_view, cacheable=True), name='showvms'),
url(r'^create_vm/$', self.admin_site.admin_view(self.create_vm, cacheable=True), name='createvm'),
url(r'^delete_vm/(?P<vmid>\d+)/$', self.admin_site.admin_view(self.delete_vm, cacheable=True), name='deletevm'),
#url(r'^my_views/$', self.admin_site.admin_view(self.my_view, cacheable=True))
url(r'^stop_vm/(?P<vmid>\d+)/$', self.admin_site.admin_view(self.stop_vm, cacheable=True), name='stopvm'),
url(r'^start_vm/(?P<vmid>\d+)/$', self.admin_site.admin_view(self.start_vm, cacheable=True), name='startvm'),
]
return my_urls + urls
@ -143,68 +134,70 @@ class HostingManageVMsAdmin(admin.ModelAdmin):
)
return TemplateResponse(request, "hosting/managevms.html", context)
# Creating VM by using method allocate(client, template)
def create_vm(self, request):
s_message = ''
e_message = ''
message = ''
try :
# Lets create a test VM with 128MB of ram and 1 CPU
vm_id = oca.VirtualMachine.allocate(self.client, '<VM><MEMORY>128</MEMORY><CPU>1</CPU></VM>')
s_message = "Created with id = " + str(vm_id)
message = "Created with id = " + str(vm_id)
vm_pool = self.get_vms()
messages.add_message(request, messages.SUCCESS, message)
# Lets print the VMs available in the pool
# print("Printing the available VMs in the pool.")
# vm_pool = oca.VirtualMachinePool(client)
# for vm in vm_pool:
# print("%s (memory: %s MB)" % ( vm.name, vm.template.memory))
except socket.timeout:
e_message = "Socket timeout error."
messages.add_message(request, messages.ERROR, "Socket timeout error.")
except OpenNebulaException:
e_message = "OpenNebulaException occurred."
context = dict(
# Include common variables for rendering the admin template.
self.admin_site.each_context(request),
error_msg=e_message,
success_msg=s_message,
vms = vm_pool,
# Anything else you want in the context...
# key=value,
)
return TemplateResponse(request, "hosting/managevms.html", context)
messages.add_message(request, messages.ERROR, "OpenNebulaException occurred.")
return redirect('admin:showvms')
# Retrives virtual machine pool information
def get_vms(self):
vm_pool = oca.VirtualMachinePool(self.client)
vm_pool.info()
return vm_pool
# Delete VM from the pool and DB by using method finalize()
def delete_vm(self, request, vmid):
vm_pool = self.get_vms()
e_message = ''
s_message = ''
# get the desired vm from the pool
vm_id = int(vmid)
vm = self.get_vm_by_id(vm_id)
if vm == -1:
print("Did not find a vm with id = " + str(vm_id))
e_message = "Did not find a vm with id = " + str(vm_id)
messages.add_message(request, messages.ERROR, "Did not find a vm with id = " + str(vm_id))
else :
print("Deleting vm_id = " + str(vm_id) + " state = " + vm.str_state)
if vm.str_state == 'PENDING' or vm.str_state =='POWEROFF' or vm.str_state =='ACTIVE':
vm.delete()
s_message = "Deleted from " + vm.str_state + " state vm with id = " + str(vm_id)
messages.add_message(request, messages.SUCCESS, "Deleted from " + vm.str_state + " state vm with id = " + str(vm_id))
else:
s_message = "Deleted from " + vm.str_state + " state vm with id = " + str(vm_id)
vm.finalize()
vm_pool = self.get_vms()
context = dict(
# Include common variables for rendering the admin template.
self.admin_site.each_context(request),
error_msg=e_message,
success_msg=s_message,
vms = vm_pool,
# Anything else you want in the context...
# key=value,
)
return TemplateResponse(request, "hosting/managevms.html", context)
messages.add_message(request, messages.SUCCESS, "Deleted (using finalize()) from " + vm.str_state + " state vm with id = " + str(vm_id))
return redirect('admin:showvms')
def stop_vm(self, request, vmid):
e_message = ''
s_message = ''
vm_id = int(vmid)
vm = self.get_vm_by_id(vm_id)
if vm == -1:
messages.add_message(request, messages.ERROR, "Did not find a vm with id = " + str(vm_id))
else :
vm.stop()
messages.add_message(request, messages.SUCCESS, "Stopped the vm with id = " + str(vm_id))
return redirect('admin:showvms')
def start_vm(self, request, vmid):
vm_id = int(vmid)
vm = self.get_vm_by_id(vm_id)
if vm == -1:
messages.add_message(request, messages.ERROR, "Did not find a vm with id = " + str(vm_id))
else :
vm.resume()
messages.add_message(request, messages.SUCCESS, "Started the vm with id = " + str(vm_id))
return redirect('admin:showvms')
def get_vm_by_id(self, vmid):
vms = self.get_vms()

View file

@ -1,12 +1,9 @@
{% extends "admin/base_site.html" %}
{% load staticfiles bootstrap3 i18n %}
{% block content %}
{% if error_msg %}
<p class="alert alert-danger">{{error_msg}}</p>
{% endif %}
{% if success_msg %}
<p class="alert alert-success">{{success_msg}}</p>
{% endif %}
<a href="{% url 'admin:createvm' %}">Create VM</a>
{% if vms %}
@ -19,7 +16,7 @@
<th>Memory</th>
<th>Status</th>
<th>User Name</th>
<th>Manage Vms</th>
<th>Actions</th>
</tr>
</thead>
<tbody>
@ -30,12 +27,20 @@
<td>{{vm.template.memory}}</td>
<td>{{vm.str_state}}</td>
<td>{{vm.uname}}</td>
<td><a href="{% url 'admin:deletevm' vm.id %}">Delete VM</a></td>
<td>
{% if vm.str_state == 'ACTIVE' %}
<a href="{% url 'admin:stopvm' vm.id %}">Stop VM</a>
{% elif vm.str_state == 'STOPPED' %}
&nbsp;&nbsp;&nbsp;<a href="{% url 'admin:startvm' vm.id %}">Start VM</a>
{% endif %}
&nbsp;&nbsp;&nbsp;<a href="{% url 'admin:deletevm' vm.id %}">Delete VM</a>
</td>
</tr>
{% endfor %}
</tbody>
</table>
</section>
{% endif %}
{% endblock %}