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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2010 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
"""
Views for managing Nova instances.
"""
from django import http
from django import template
from django.contrib import messages
from django.contrib.auth.decorators import login_required
from django.shortcuts import redirect, render_to_response
from django_nova import exceptions
from django_nova import forms as nova_forms
from django_nova import shortcuts
from django_nova.exceptions import handle_nova_error
@login_required
@handle_nova_error
def index(request, project_id):
project = shortcuts.get_project_or_404(request, project_id)
instances = sorted(project.get_instances(), key=lambda k: k.public_dns_name)
return render_to_response('django_nova/instances/index.html', {
'region': project.region,
'project': project,
'instances': instances,
'detail' : False,
}, context_instance = template.RequestContext(request))
@login_required
@handle_nova_error
def detail(request, project_id, instance_id):
project = shortcuts.get_project_or_404(request, project_id)
instance = project.get_instance(instance_id)
instances = sorted(project.get_instances(), key=lambda k: k.public_dns_name)
if not instance:
raise http.Http404()
return render_to_response('django_nova/instances/index.html', {
'region': project.region,
'project': project,
'selected_instance': instance,
'instances': instances,
'update_form': nova_forms.UpdateInstanceForm(instance),
'detail' : True,
}, context_instance = template.RequestContext(request))
@login_required
@handle_nova_error
def performance(request, project_id, instance_id):
project = shortcuts.get_project_or_404(request, project_id)
instance = project.get_instance(instance_id)
if not instance:
raise http.Http404()
return render_to_response('django_nova/instances/performance.html', {
'region': project.region,
'project': project,
'instance': instance,
'update_form': nova_forms.UpdateInstanceForm(instance),
}, context_instance = template.RequestContext(request))
# TODO(devcamcar): Wrap this in an @ajax decorator.
def refresh(request, project_id):
# TODO(devcamcar): This logic belongs in decorator.
if not request.user.is_authenticated():
return http.HttpResponseForbidden()
project = shortcuts.get_project_or_404(request, project_id)
instances = sorted(project.get_instances(), key=lambda k: k.public_dns_name)
return render_to_response('django_nova/instances/_instances_list.html', {
'project': project,
'instances': instances,
}, context_instance = template.RequestContext(request))
@handle_nova_error
def refresh_detail(request, project_id, instance_id):
# TODO(devcamcar): This logic belongs in decorator.
if not request.user.is_authenticated():
return http.HttpResponseForbidden()
project = shortcuts.get_project_or_404(request, project_id)
instance = project.get_instance(instance_id)
instances = sorted(project.get_instances(), key=lambda k: k.public_dns_name)
return render_to_response('django_nova/instances/_instances_list.html', {
'project': project,
'selected_instance': instance,
'instances': instances,
}, context_instance = template.RequestContext(request))
@login_required
@handle_nova_error
def terminate(request, project_id):
project = shortcuts.get_project_or_404(request, project_id)
if request.method == 'POST':
instance_id = request.POST['instance_id']
try:
project.terminate_instance(instance_id)
except exceptions.NovaApiError, e:
messages.error(request,
'Unable to terminate %s: %s' %
(instance_id, e.message,))
else:
messages.success(request,
'Instance %s has been terminated.' % instance_id)
return redirect('nova_instances', project_id)
@login_required
@handle_nova_error
def console(request, project_id, instance_id):
project = shortcuts.get_project_or_404(request, project_id)
conn = project.get_nova_connection()
console = conn.get_console_output(instance_id)
response = http.HttpResponse(mimetype='text/plain')
response.write(console.output)
response.flush()
return response
@login_required
@handle_nova_error
def graph(request, project_id, instance_id, graph_name):
project = shortcuts.get_project_or_404(request, project_id)
graph = project.get_instance_graph(instance_id, graph_name)
if graph is None:
raise http.Http404()
response = http.HttpResponse(mimetype='image/png')
response.write(graph)
return response
@login_required
@handle_nova_error
def update(request, project_id, instance_id):
project = shortcuts.get_project_or_404(request, project_id)
instance = project.get_instance(instance_id)
if not instance:
raise http.Http404()
if request.method == 'POST':
form = nova_forms.UpdateInstanceForm(instance, request.POST)
if form.is_valid():
try:
project.update_instance(instance_id, form.cleaned_data)
except exceptions.NovaApiError, e:
messages.error(request,
'Unable to update instance %s: %s' %
(instance_id, e.message,))
else:
messages.success(request,
'Instance %s has been updated.' % instance_id)
return redirect('nova_instances', project_id)
else:
return render_to_response('django_nova/instances/edit.html', {
'region': project.region,
'project': project,
'instance': instance,
'update_form': form,
}, context_instance = template.RequestContext(request))
else:
return render_to_response('django_nova/instances/edit.html', {
'region': project.region,
'project': project,
'instance': instance,
'update_form': nova_forms.UpdateInstanceForm(instance),
}, context_instance = template.RequestContext(request))
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