Added feature: stop a running service instance and corresponding unittests

[osm/vim-emu.git] / src / emuvim / api / sonata / dummygatekeeper.py

diff --git a/src/emuvim/api/sonata/dummygatekeeper.py b/src/emuvim/api/sonata/dummygatekeeper.py
index 2a994bd..70fce59 100755 (executable)
--- a/src/emuvim/api/sonata/dummygatekeeper.py
+++ b/src/emuvim/api/sonata/dummygatekeeper.py
@@ -258,17 +258,29 @@ class Service(object):
         LOG.info("Service started. Instance id: %r" % instance_uuid)
         return instance_uuid
 
-    def stop_service(self):
+    def stop_service(self, instance_uuid):
         """
         This method stops a running service instance.
-        It iterates over all VNFDs, stopping them each
+        It iterates over all VNF instances, stopping them each
         and removing them from their data center.
 
-        :return:
+        :param instance_uuid: the uuid of the service instance to be stopped
         """
+        LOG.info("Stopping service %r" % self.uuid)
+        # get relevant information
+        # instance_uuid = str(self.uuid.uuid4())
+        vnf_instances = self.instances[instance_uuid]["vnf_instances"]
 
+        for v in vnf_instances:
+            self._stop_vnfi(v)
 
+        if not GK_STANDALONE_MODE:
+            # remove placement?
+            # self._remove_placement(RoundRobinPlacement)
+            None
 
+        # last step: remove the instance from the list of all instances
+        del self.instances[instance_uuid]
 
     def _start_vnfd(self, vnfd):
         """
@@ -308,19 +320,18 @@ class Service(object):
             vnfi = target_dc.startCompute(self.vnf_name2docker_name[vnf_name], network=intfs, image=docker_name, flavor_name="small")
             return vnfi
 
-    def _stop_vnfd(self, vnf_name):
+    def _stop_vnfi(self, vnfi):
         """
-        Stop a VNFD specified by its name.
+        Stop a VNF instance.
 
-        :param vnf_name: Name of the vnf to be stopped
-        :return:
+        :param vnfi: vnf instance to be stopped
         """
-        if vnf_name not in self.vnfds:
-            raise Exception("VNFD with name %s not found." % vnf_name)
-        vnfd = self.vnfds[vnf_name]
-        dc = vnfd.get("dc")
-        LOG.info("Stopping %r contained in %r in DC %r" % (vnf_name, self.vnf_name2docker_name[vnf_name], dc)
-        dc.stopCompute(self.vnf_name2docker_name[vnf_name])
+        # Find the correct datacenter
+        status = vnfi.getStatus()
+        dc = vnfi.datacenter
+        # stop the vnfi
+        LOG.info("Stopping the vnf instance contained in %r in DC %r" % (status["name"], dc))
+        dc.stopCompute(status["name"])
 
     def _get_vnf_instance(self, instance_uuid, name):
         """
@@ -616,7 +627,7 @@ class Instantiations(fr.Resource):
         if service_uuid in GK.services:
             # ok, we have a service uuid, lets start the service
             service_instance_uuid = GK.services.get(service_uuid).start_service()
-            return {"service_instance_uuid": service_instance_uuid}
+            return {"service_instance_uuid": service_instance_uuid}, 201
         return "Service not found", 404
 
     def get(self):
@@ -630,23 +641,45 @@ class Instantiations(fr.Resource):
 
     def delete(self):
         """
-        Stops a running service specified by its UUID.
-
-        :return:
+        Stops a running service specified by its service and instance UUID.
         """
-        # try to extract the service UUID from the request
+        # try to extract the service  and instance UUID from the request
         json_data = request.get_json(force=True)
         service_uuid = json_data.get("service_uuid")
+        instance_uuid = json_data.get("service_instance_uuid")
 
-        if service_uuid in GK.services:
-            # valid service UUID, stop service
-            GK.services.get(service_uuid).stop_service()
-            return "", 0
+        # try to be fuzzy
+        if service_uuid is None and len(GK.services) > 0:
+            #if we don't get a service uuid, we simply stop the last service in the list
+            service_uuid = list(GK.services.iterkeys())[0]
+        if instance_uuid is None and len(GK.services[service_uuid].instances) > 0:
+            instance_uuid = list(GK.services[service_uuid].instances.iterkeys())[0]
+
+        if service_uuid in GK.services and instance_uuid in GK.services[service_uuid].instances:
+            # valid service and instance UUID, stop service
+            GK.services.get(service_uuid).stop_service(instance_uuid)
+            del GK.services.get(service_uuid).instances[instance_uuid]
+            return
         return "Service not found", 404
 
+class Exit(fr.Resource):
+
+    def put(self):
+        """
+        Stop the running Containernet instance regardless of data transmitted
+        """
+        GK.net.stop()
+
+
+def initialize_GK():
+    global GK
+    GK = Gatekeeper()
+
+
 
 # create a single, global GK object
-GK = Gatekeeper()
+GK = None
+initialize_GK()
 # setup Flask
 app = Flask(__name__)
 app.config['MAX_CONTENT_LENGTH'] = 512 * 1024 * 1024  # 512 MB max upload
@@ -654,6 +687,12 @@ api = fr.Api(app)
 # define endpoints
 api.add_resource(Packages, '/packages')
 api.add_resource(Instantiations, '/instantiations')
+api.add_resource(Exit, '/emulator/exit')
+
+
+#def initialize_GK():
+#    global GK
+#    GK = Gatekeeper()
 
 
 def start_rest_api(host, port, datacenters=dict()):