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Access VirtualMachine via api! 

Serialization of VirtualMachine objects now fully works
This commit is contained in:
Modulos 2017-05-11 05:51:30 +02:00
parent cbc13de34f
commit ef00d676f5
3 changed files with 101 additions and 76 deletions
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84
opennebula_api/models.py
View File

@ -15,10 +15,9 @@ class VirtualMachineTemplate(models.Model):
disk_size_price = models.FloatField()
def calculate_price(self):
manager = OpenNebulaManager()
template = manger._get_template(self.opennebula_id).template
template = OpenNebulaManager()._get_template(self.opennebula_id).template
price = int(template.vpcu) * self.core_price
price = int(template.vcpu) * self.core_price
price += int(template.memory) / 1024 * self.memory_price
try:
price += int(template.disk.size) / 1024 * self.disk_size_price
@ -29,20 +28,17 @@ class VirtualMachineTemplate(models.Model):
def get_name(self):
manager = OpenNebulaManager(create_user=False)
template = manager._get_template(template_id=self.opennebula_id)
template = OpenNebulaManager()._get_template(template_id=self.opennebula_id)
return template.name
def get_cores(self):
manager = OpenNebulaManager(create_user=False)
template = manager._get_template(template_id=self.opennebula_id).template
template = OpenNebulaManager()._get_template(template_id=self.opennebula_id).template
return int(template.vcpu)
def get_disk_size(self):
manager = OpenNebulaManager(create_user=False)
template = manager._get_template(template_id=self.opennebula_id).template
template = OpenNebulaManager()._get_template(template_id=self.opennebula_id).template
disk_size = 0
for disk in template.disks:
disk_size += int(disk.size)
@ -50,14 +46,13 @@ class VirtualMachineTemplate(models.Model):
def get_memory(self):
manager = OpenNebulaManager(create_user=False)
template = manager._get_template(template_id=self.opennebula_id).template
template = OpenNebulaManager()._get_template(template_id=self.opennebula_id).template
return int(template.memory) / 1024
class VirtualMachine(models.Model):
"""This class represents an opennebula virtual machine."""
opennebula_id = models.IntegerField()
template = models.ForeignKey(VirtualMachineTemplate)
vm_template = models.ForeignKey(VirtualMachineTemplate)
VM_STATE = {
'0': 'INIT',
@ -74,66 +69,42 @@ class VirtualMachine(models.Model):
}
def get_name(self):
if self.manager is None:
self.manager = OpenNebulaManager()
vm = self.manager._get_vm(vm_id=self.opennebula_id)
vm = OpenNebulaManager()._get_vm(vm_id=self.opennebula_id)
return vm.name
def get_cores(self):
if self.manager is None:
self.manager = OpenNebulaManager()
template = self.manager._get_vm(vm_id=self.opennebula_id).template
return int(template.vcpu)
return self.vm_template.get_cores()
def get_disk_size(self):
if self.manager is None:
self.manager = OpenNebulaManager()
template = self.manager._get_vm(vm_id=self.opennebula_id).template
try:
return template.disk.size
except AttributeError:
disk_size = 0
for disk in template.disks:
disk_size += disk.size
return disk_size / 1024
return self.vm_template.get_disk_size()
def get_memory(self):
if self.manager is None:
self.manager = OpenNebulaManager()
template = self.manager._get_vm(vm_id=self.opennebula_id).template
return int(template.memory)
return self.vm_template.get_memory()
def get_id(self):
if self.manager is None:
self.manager = OpenNebulaManager()
vm = self.manager._get_vm(vm_id=self.opennebula_id)
vm = OpenNebulaManager()._get_vm(vm_id=self.opennebula_id)
return vm.id
def get_ip(self):
if self.manager is None:
self.manager = OpenNebulaManager()
vm = self.manager._get_vm(vm_id=self.opennebula_id)
vm = OpenNebulaManager()._get_vm(vm_id=self.opennebula_id)
try:
return vm.user_template.ungleich_public_ip
except AttributeError:
return '-'
def get_state(self):
if self.manager is None:
self.manager = OpenNebulaManager()
vm = self.manager._get_vm(vm_id=self.opennebula_id)
vm = OpenNebulaManager()._get_vm(vm_id=self.opennebula_id)
return self.VM_STATE.get(str(vm.state))
def get_price(self):
return 0.0
return self.vm_template.calculate_price()
class OpenNebulaManager():
"""This class represents an opennebula manager."""
@ -182,6 +153,7 @@ class OpenNebulaManager():
opennebula_user = self.oneadmin_client.call(oca.User.METHODS['allocate'], email,
password, 'core')
return opennebula_user
#TODO: Replace with logger
except ConnectionRefusedError:
print('Could not connect to host: {host} via protocol {protocol}'.format(
host=settings.OPENNEBULA_DOMAIN,
@ -192,6 +164,7 @@ class OpenNebulaManager():
try:
user_pool = oca.UserPool(self.oneadmin_client)
user_pool.info()
#TODO: Replace with logger
except ConnectionRefusedError:
print('Could not connect to host: {host} via protocol {protocol}'.format(
host=settings.OPENNEBULA_DOMAIN,
@ -202,8 +175,9 @@ class OpenNebulaManager():
def _get_vm_pool(self):
try:
vm_pool = oca.VmPool(self.oneadmin_client)
vm_pool = oca.VirtualMachinePool(self.oneadmin_client)
vm_pool.info()
#TODO: Replace with logger
except ConnectionRefusedError:
print('Could not connect to host: {host} via protocol {protocol}'.format(
host=settings.OPENNEBULA_DOMAIN,
@ -225,12 +199,15 @@ class OpenNebulaManager():
template = template_pool.get_by_id(template_id)
vm_id = template.instantiate()
self.oneadmin.call(
oca.VirtualMachine.METHODS['chown'],
vm_id,
self.opennebula_user.id,
self.opennebula_user.group_ids[0]
)
try:
self.oneadmin_client.call(
oca.VirtualMachine.METHODS['chown'],
vm_id,
self.opennebula_user.id,
self.opennebula_user.group_ids[0]
)
except AttributeError:
pass
return vm_id
def delete_vm(self, vm_id):
@ -241,6 +218,7 @@ class OpenNebulaManager():
try:
template_pool = oca.VmTemplatePool(self.oneadmin_client)
template_pool.info()
#TODO: Replace with logger
except ConnectionRefusedError:
print('Could not connect to host: {host} via protocol {protocol}'.format(
host=settings.OPENNEBULA_DOMAIN,

72
opennebula_api/serializers.py
View File

@ -6,27 +6,6 @@ from oca import OpenNebulaException
from .models import VirtualMachine, VirtualMachineTemplate, OpenNebulaManager
class VirtualMachineSerializer(serializers.ModelSerializer):
"""Serializer to map the virtual machine instance into JSON format."""
#TODO: Maybe we can change to template.get_cores
cores = serializers.IntegerField(read_only=True, source='get_cores')
name = serializers.CharField(read_only=True, source='get_name')
disk_size = serializers.IntegerField(read_only=True, source='get_disk_size')
memory = serializers.IntegerField(read_only=True, source='get_memory')
#TODO: See if we can change to IPAddressField
ip = serializers.CharField(read_only=True, source='get_ip')
deploy_id = serializers.IntegerField(read_only=True, source='get_deploy_id')
vm_id = serializers.IntegerField(read_only=True, source='get_vm_id')
state = serializers.CharField(read_only=True, source='get_state')
price = serializers.FloatField(read_only=True, source='get_price')
class Meta:
model = VirtualMachine
fields = ('id', 'opennebula_id', 'template', 'cores', 'name',
'disk_size', 'memory', 'ip', 'deploy_id', 'state', 'vm_id',
'price')
class VirtualMachineTemplateSerializer(serializers.ModelSerializer):
"""Serializer to map the virtual machine template instance into JSON format."""
cores = serializers.IntegerField(source='get_cores')
@ -61,3 +40,54 @@ class VirtualMachineTemplateSerializer(serializers.ModelSerializer):
def create(self, validated_data):
return VirtualMachineTemplate.objects.create(**validated_data)
class TemplatePrimaryKeyRelatedField(serializers.PrimaryKeyRelatedField):
def display_value(self, instance):
return 'Template: {}'.format(instance.get_name())
class VirtualMachineSerializer(serializers.ModelSerializer):
"""Serializer to map the virtual machine instance into JSON format."""
#TODO: Maybe we can change to template.get_cores
cores = serializers.IntegerField(read_only=True, source='get_cores')
name = serializers.CharField(read_only=True, source='get_name')
disk_size = serializers.IntegerField(read_only=True, source='get_disk_size')
memory = serializers.IntegerField(read_only=True, source='get_memory')
#TODO: See if we can change to IPAddressField
ip = serializers.CharField(read_only=True, source='get_ip')
deploy_id = serializers.IntegerField(read_only=True, source='get_deploy_id')
vm_id = serializers.IntegerField(read_only=True, source='get_vm_id')
state = serializers.CharField(read_only=True, source='get_state')
price = serializers.FloatField(read_only=True, source='get_price')
vm_template = VirtualMachineTemplateSerializer(read_only=True)
vm_template_id = TemplatePrimaryKeyRelatedField(
queryset=VirtualMachineTemplate.objects.all(),
source='vm_template'
)
class Meta:
model = VirtualMachine
fields = ('id', 'opennebula_id', 'vm_template', 'vm_template_id', 'cores', 'name',
'disk_size', 'memory', 'ip', 'deploy_id', 'state', 'vm_id',
'price')
read_only_fields = ('opennebula_id', )
def validate(self, data):
# Create the opennebula model
manager = OpenNebulaManager(create_user = False)
try:
template_id = data['vm_template'].opennebula_id
opennebula_id = manager.create_vm(template_id)
data.update({'opennebula_id':opennebula_id})
except OpenNebulaException as err:
raise serializers.ValidationError("OpenNebulaException occured. {0}".format(err))
return data
def create(self, validated_data):
return VirtualMachine.objects.create(**validated_data)

21
opennebula_api/views.py
View File

@ -1,6 +1,8 @@
from rest_framework import generics
from .serializers import VirtualMachineTemplateSerializer
from .models import VirtualMachineTemplate, OpenNebulaManager
from .serializers import VirtualMachineTemplateSerializer, \
VirtualMachineSerializer
from .models import VirtualMachineTemplate, VirtualMachine, OpenNebulaManager
class TemplateCreateView(generics.ListCreateAPIView):
"""This class defines the create behavior of our rest api."""
@ -16,3 +18,18 @@ class TemplateDetailsView(generics.RetrieveUpdateDestroyAPIView):
queryset = VirtualMachineTemplate.objects.all()
serializer_class = VirtualMachineTemplateSerializer
class VmCreateView(generics.ListCreateAPIView):
"""This class defines the create behavior of our rest api."""
queryset = VirtualMachine.objects.all()
serializer_class = VirtualMachineSerializer
def perform_create(self, serializer):
"""Save the post data when creating a new template."""
serializer.save()
class VmDetailsView(generics.RetrieveUpdateDestroyAPIView):
"""This class handles the http GET, PUT and DELETE requests."""
queryset = VirtualMachine.objects.all()
serializer_class = VirtualMachineSerializer