from snfOCCI.config import SERVER_CONFIG
-from kamaki.clients.compute import ComputeClient
-from kamaki.clients.cyclades import CycladesClient
-from kamaki.config import Config
-
from occi.backend import ActionBackend, KindBackend
-from occi.extensions.infrastructure import COMPUTE, START, STOP, SUSPEND, RESTART
+from occi.extensions.infrastructure import START, STOP, SUSPEND, RESTART
+from occi.exceptions import HTTPError
#Compute Backend for snf-occi-server
class MyBackend(KindBackend, ActionBackend):
- '''
- An very simple abstract backend which handles update and replace for
- attributes. Support for links and mixins would need to added.
- '''
+
+ # Updating and Replacing compute instances not supported by Cyclades
def update(self, old, new, extras):
- raise AttributeError("This action is currently no applicable.")
+ raise HTTPError(501, "Update is currently no applicable")
def replace(self, old, new, extras):
- raise AttributeError("This action is currently no applicable.")
+ raise HTTPError(501, "Replace is currently no applicable")
class ComputeBackend(MyBackend):
'''
def create(self, entity, extras):
-
- for mixin in entity.mixins:
- if mixin.related[0].term == 'os_tpl':
- image = mixin
- image_id = mixin.attributes['occi.core.id']
- if mixin.related[0].term == 'resource_tpl':
- flavor = mixin
- flavor_id = mixin.attributes['occi.core.id']
-
- entity.attributes['occi.compute.state'] = 'inactive'
- entity.actions = [START]
- #Registry identifier is the uuid key occi.handler assigns
- #attribute 'occi.core.id' will be the snf-server id
+ #Creating new compute instance
+
+ try:
+
+ snf = extras['snf']
+
+ for mixin in entity.mixins:
+ if mixin.related[0].term == 'os_tpl':
+ image_id = mixin.attributes['occi.core.id']
+ if mixin.related[0].term == 'resource_tpl':
+ flavor = mixin
+ flavor_id = mixin.attributes['occi.core.id']
- conf = Config()
- conf.set('token',extras['token'])
- snf = ComputeClient(conf)
+ vm_name = entity.attributes['occi.core.title']
+ info = snf.create_server(vm_name, flavor_id, image_id)
- vm_name = entity.attributes['occi.compute.hostname']
- info = snf.create_server(vm_name, flavor_id, image_id)
- entity.attributes['occi.core.id'] = str(info['id'])
- entity.attributes['occi.compute.architecture'] = SERVER_CONFIG['compute_arch']
- entity.attributes['occi.compute.cores'] = flavor.attributes['occi.compute.cores']
- entity.attributes['occi.compute.memory'] = flavor.attributes['occi.compute.memory']
- entity.attributes['occi.compute.hostname'] = SERVER_CONFIG['hostname'] % {'id':info['id']}
+ entity.actions = [START]
+ entity.attributes['occi.compute.state'] = 'inactive'
+ entity.attributes['occi.core.id'] = str(info['id'])
+ entity.attributes['occi.compute.architecture'] = SERVER_CONFIG['compute_arch']
+ entity.attributes['occi.compute.cores'] = flavor.attributes['occi.compute.cores']
+ entity.attributes['occi.compute.memory'] = flavor.attributes['occi.compute.memory']
+ entity.attributes['occi.compute.hostname'] = SERVER_CONFIG['hostname'] % {'id':info['id']}
+
+ except (UnboundLocalError, KeyError) as e:
+ raise HTTPError(406, 'Missing details about compute instance')
+
def retrieve(self, entity, extras):
- # triggering cyclades to retrieve up to date information
- conf = Config()
- conf.set('token',extras['token'])
- snf = ComputeClient(conf)
+ #Triggering cyclades to retrieve up to date information
+
+ snf = extras['snf']
vm_id = int(entity.attributes['occi.core.id'])
vm_info = snf.get_server_details(vm_id)
}
entity.attributes['occi.compute.state'] = status_dict[vm_state]
+
+ if vm_state == 'ERROR':
+ raise HTTPError(500, 'ERROR building the compute instance')
- if entity.attributes['occi.compute.state'] == 'inactive':
- entity.actions = [START]
- if entity.attributes['occi.compute.state'] == 'active':
- entity.actions = [STOP, SUSPEND, RESTART]
- if entity.attributes['occi.compute.state'] == 'suspended':
- entity.actions = [START]
+ else:
+ if entity.attributes['occi.compute.state'] == 'inactive':
+ entity.actions = [START]
+ if entity.attributes['occi.compute.state'] == 'active':
+ entity.actions = [STOP, SUSPEND, RESTART]
def delete(self, entity, extras):
- # delete vm with vm_id = entity.attributes['occi.core.id']
- conf = Config()
- conf.set('token',extras['token'])
- snf = ComputeClient(conf)
+ #Deleting compute instance
+ snf = extras['snf']
vm_id = int(entity.attributes['occi.core.id'])
snf.delete_server(vm_id)
def action(self, entity, action, extras):
- conf = Config()
- conf.set('token',extras['token'])
- client = CycladesClient(conf)
+ #Triggering action to compute instances
- vm_id = int(entity.attributes['occi.core.id'])
+ client = extras['client']
+ snf = extras['snf']
- if action not in entity.actions:
- raise AttributeError("This action is currently no applicable.")
+ vm_id = int(entity.attributes['occi.core.id'])
+ vm_info = snf.get_server_details(vm_id)
+ vm_state = vm_info['status']
- elif action == START:
- print "Starting VM"
- client.start_server(vm_id)
+ if vm_state == 'ERROR':
+ raise HTTPError(500, 'ERROR building the compute instance')
- elif action == STOP:
- print "Stopping VM"
- client.shutdown_server(vm_id)
+ else:
+ if action not in entity.actions:
+ raise AttributeError("This action is currently no applicable.")
- elif action == RESTART:
- print "Restarting VM"
- snf.reboot_server(vm_id)
-
+ elif action == START:
+ print "Starting VM"
+ client.start_server(vm_id)
+
+ elif action == STOP:
+ print "Stopping VM"
+ client.shutdown_server(vm_id)
+
+ elif action == RESTART:
+ print "Restarting VM"
+ snf.reboot_server(vm_id)
- elif action == SUSPEND:
- raise AttributeError("This actions is currently no applicable")
+ elif action == SUSPEND:
+ raise HTTPError(501, "This actions is currently no applicable")