Support for Instances and updated on records IM (#68)

## LXD, KVM, Native
Support for multiple instances of the same FDU
## Record IM
Added more record related fields and information
## API updates
Some changes in API.FDU

- fdu_id = api.fdu.onboard(descriptor)
- instance_id = api.fdu.define(fdu_id, node_id)
- api.fdu.configure(instance_id)
- api.fdu.start(instance_id)
- api.fdu.stop(instance_id)
- api.fdu.clean(instance_id)
- api.fdu_undefine(instance_id)

Helpers

- instance_id = api.fdu.instantiate(fdu_id, node_id) : define, configure and start
- api.fdu.terminate(instance_id) : stop, clean, undefine
- api.fdu.get_nodes(fdu_uuid) -> node where the fdu is instantiated
- api.fdu.instance_list(fdu_uuid) -> dict of {node_id: [instances list]}

fos-plugins/KVM/KVMFDU.py

@@ -22,46 +22,42 @@
 
 class KVMFDU(FDU):
 
-    def __init__(self, uuid, name, interfaces, connection_points, image,
-                 comp_requirements, configuration, ssh_key):
-
+    def __init__(self, uuid,fdu_uuid,node, status, accelerators, io_ports,
+                 interfaces, connection_points, hypervisor_info):
         super(KVMFDU, self).__init__()
         self.uuid = uuid
-        self.name = name
+        self.fdu_uuid = fdu_uuid
+        self.node = node
+        self.status = status
+        self.accelerators = accelerators
+        self.io_ports = io_ports
         self.interfaces = interfaces
         self.cps = connection_points
-        self.image = image
-        self.configuration = configuration
-        self.ssh_key = ssh_key
-        self.comp_requirements = comp_requirements
-        self.xml = None
-        self.cdrom = None
-        self.disk = None
+        self.hv_info = hypervisor_info
+        self.error_code = 0
+        self.error_msg = ''
+        self.migration_properties = None
+        self.image = None
+        self.comp_requirements = None
+        self.devices = None
+        self.conf = None
+        self.profiles = None
+        self.configuration = None
+        self.name = 'v{}'.format(uuid)
 
-    @staticmethod
-    def from_descriptor(desciptor):
-        fdu = KVMFDU(desciptor.get('uuid'),
-                     desciptor.get('name'),
-                     desciptor.get('interfaces'),
-                     desciptor.get('connection_points'),
-                     desciptor.get('image'),
-                     desciptor.get('computation_requirements'),
-                     desciptor.get('configuration'),
-                     desciptor.get('ssh-key'))
-        return fdu
 
     @staticmethod
-    def to_descriptor(fdu):
-        d = {
-            'name': fdu.name,
-            'uuid': fdu.uuid,
-            'computation_requirements': json.dumps(fdu.comp_requirements),
-            'base_image': json.dumps(fdu.image),
-            'hypervisor_type': 'KVM',
-            'interfaces': json.dumps(fdu.interfaces),
-            'connection_points': json.dumps(fdu.cps)
-        }
-        return d
+    def from_record(record):
+        fdu = KVMFDU(record.get('uuid'),
+                     record.get('fdu_uuid'),
+                     record.get('node'),
+                     record.get('status'),
+                     record.get('accelerators'),
+                     record.get('io_ports'),
+                     record.get('interfaces'),
+                     record.get('connection_points'),
+                     record.get('hypervisor_info'))
+        return fdu
 
     def on_define(self):
         self.state = State.DEFINED

fos-plugins/LXD/LXDFDU.py

@@ -20,34 +20,44 @@
 
 class LXDFDU(FDU):
 
-    def __init__(self, uuid, name, interfaces, connection_points, image,
-                 comp_requirements, configuration, ssh_keys):
-
+    def __init__(self, uuid,fdu_uuid,node, status, accelerators, io_ports,
+                 interfaces, connection_points, hypervisor_info):
         super(LXDFDU, self).__init__()
         self.uuid = uuid
-        self.name = name
+        self.fdu_uuid = fdu_uuid
+        self.node = node
+        self.status = status
+        self.accelerators = accelerators
+        self.io_ports = io_ports
         self.interfaces = interfaces
         self.cps = connection_points
-        self.image = image
-        self.configuration = configuration
-        self.ssh_key = ssh_keys
-        self.comp_requirements = comp_requirements
+        self.hv_info = hypervisor_info
+        self.error_code = 0
+        self.error_msg = ''
+        self.migration_properties = None
+        self.image = None
+        self.comp_requirements = None
         self.devices = None
         self.conf = None
         self.profiles = None
+        self.configuration = None
+        self.name = 'c{}'.format(uuid)
 
     @staticmethod
-    def from_descriptor(desciptor):
-        fdu = LXDFDU(desciptor.get('uuid'),
-                     desciptor.get('name'),
-                     desciptor.get('interfaces'),
-                     desciptor.get('connection_points'),
-                     desciptor.get('image'),
-                     desciptor.get('computation_requirements'),
-                     desciptor.get('configuration'),
-                     desciptor.get('ssh-key'))
+    def from_record(record):
+        fdu = LXDFDU(record.get('uuid'),
+                     record.get('fdu_uuid'),
+                     record.get('node'),
+                     record.get('status'),
+                     record.get('accelerators'),
+                     record.get('io_ports'),
+                     record.get('interfaces'),
+                     record.get('connection_points'),
+                     record.get('hypervisor_info'))
         return fdu
 
+
+
     def on_defined(self):
         self.state = State.DEFINED