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API Integration

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Modulos 2017-05-12 12:07:05 +02:00
commit 130c00c8ee
19 changed files with 310 additions and 890 deletions
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155
opennebula_api/models.py
View file

@ -1,124 +1,11 @@
import oca
import socket
from django.db import models
from django.conf import settings
from django.utils.functional import cached_property
from membership.models import CustomUser
from oca.pool import WrongNameError
class VirtualMachineTemplate(models.Model):
"""This class represents an opennebula template."""
opennebula_id = models.IntegerField()
base_price = models.FloatField()
memory_price = models.FloatField()
core_price = models.FloatField()
disk_size_price = models.FloatField()
@cached_property
def template(self):
template = OpenNebulaManager()._get_template(self.opennebula_id)
return template
def calculate_price(self):
template = self.template.template
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
except AttributeError:
for disk in template.disks:
price += int(disk.size) / 1024 * self.disk_size_price
return price
def get_name(self):
template = self.template
return template.name
def get_cores(self):
template = self.template.template
return int(template.vcpu)
def get_disk_size(self):
template = self.template.template
disk_size = 0
for disk in template.disks:
disk_size += int(disk.size)
return disk_size / 1024
def get_memory(self):
template = self.template.template
return int(template.memory) / 1024
class VirtualMachine(models.Model):
"""This class represents an opennebula virtual machine."""
opennebula_id = models.IntegerField()
owner = models.ForeignKey(CustomUser, related_name='virtual_machines')
vm_template = models.ForeignKey(VirtualMachineTemplate)
VM_STATE = {
'0': 'INIT',
'1': 'PENDING',
'2': 'HOLD',
'3': 'ACTIVE',
'4': 'STOPPED',
'5': 'SUSPENDED',
'6': 'DONE',
'8': 'POWEROFF',
'9': 'UNDEPLOYED',
'10': 'CLONING',
'11': 'CLONING_FAILURE',
}
@cached_property
def vm(self):
manager = OpenNebulaManager(email=self.owner.email,
password=self.owner.password[0:20],
create_user=True)
vm = manager._get_vm(self.opennebula_id)
return vm
def get_name(self):
return self.vm.name
def get_cores(self):
return self.vm_template.get_cores()
def get_disk_size(self):
return self.vm_template.get_disk_size()
def get_memory(self):
return self.vm_template.get_memory()
def get_id(self):
return self.vm.id
def get_ip(self):
try:
return self.vm.user_template.ungleich_public_ip
except AttributeError:
return '-'
def get_state(self):
return self.VM_STATE.get(str(self.vm.state))
def get_price(self):
return self.vm_template.calculate_price()
class OpenNebulaManager():
"""This class represents an opennebula manager."""
@ -204,12 +91,15 @@ class OpenNebulaManager():
raise ConnectionRefusedError
return vm_pool
def get_vms(self):
return self._get_vm_pool()
def _get_vm(self, vm_id):
def get_vm(self, vm_id):
vm_pool = self._get_vm_pool()
return vm_pool.get_by_id(vm_id)
return vm_pool.get_by_id(int(vm_id))
def create_vm(self, template_id):
#TODO: get app with id
def create_vm(self, template_id, app_id=None):
vm_id = self.oneadmin_client.call(
oca.VmTemplate.METHODS['instantiate'],
template_id,
@ -232,7 +122,7 @@ class OpenNebulaManager():
self.oneadmin_client.call(
oca.VirtualMachine.METHODS['action'],
'terminate',
vm_id
int(vm_id)
)
def _get_template_pool(self):
@ -248,19 +138,31 @@ class OpenNebulaManager():
raise ConnectionRefusedError
return template_pool
def _get_template(self, template_id):
def get_templates(self):
public_templates = [
template
for template in self._get_template_pool()
if 'public-' in template.name
]
return public_templates
def get_template(self, template_id):
template_pool = self._get_template_pool()
return template_pool.get_by_id(template_id)
def create_template(self, name, cores, memory, disk_size):
def create_template(self, name, cores, memory, disk_size, core_price, memory_price,
disk_size_price, ssh='' ):
"""Create and add a new template to opennebula.
:param name: A string representation describing the template.
Used as label in view.
:param cores: Amount of virtual cpu cores for the VM.
:param memory: Amount of RAM for the VM (MB)
:param disk_size: Amount of disk space for VM (MB)
:param memory: Amount of RAM for the VM (GB)
:param disk_size: Amount of disk space for VM (GB)
:param core_price: Price of virtual cpu for the VM per core.
:param memory_price: Price of RAM for the VM per GB
:param disk_size_price: Price of disk space for VM per GB
:param ssh: User public ssh key
"""
template_string_formatter = """<TEMPLATE>
<NAME>{name}</NAME>
@ -272,6 +174,10 @@ class OpenNebulaManager():
<SIZE>{size}</SIZE>
<DEV_PREFIX>vd</DEV_PREFIX>
</DISK>
<CPU_COST>{cpu_cost}</CPU_COST>
<MEMORY_COST>{memory_cost}</MEMORY_COST>
<DISK_COST>{disk_cost}</DISK_COST>
<SSH_PUBLIC_KEY>{ssh}</SSH_PUBLIC_KEY>
</TEMPLATE>
"""
template_id = oca.VmTemplate.allocate(
@ -281,7 +187,12 @@ class OpenNebulaManager():
vcpu=cores,
cpu=0.1*cores,
size=1024 * disk_size,
memory=1024 * memory
memory=1024 * memory,
# * 10 because we set cpu to *0.1
cpu_cost=10*core_price,
memory_cost=memory_price,
disk_cost=disk_size_price,
ssh=ssh
)
)