X-Git-Url: https://osm.etsi.org/gitweb/?a=blobdiff_plain;f=src%2Femuvim%2Fapi%2Fsonata%2Fdummygatekeeper.py;h=294ffed1b6780527c11c6f5ecddb3df8fd6de224;hb=95906762b28a11be154572dae68e354219ebcf03;hp=7ae3522d6a5ea8e71ad5107a7fa06c3f3116f830;hpb=f90c1f70bbb59ab940dd7698f784594b0927baaf;p=osm%2Fvim-emu.git

diff --git a/src/emuvim/api/sonata/dummygatekeeper.py b/src/emuvim/api/sonata/dummygatekeeper.py
index 7ae3522..294ffed 100755
--- a/src/emuvim/api/sonata/dummygatekeeper.py
+++ b/src/emuvim/api/sonata/dummygatekeeper.py
@@ -64,8 +64,12 @@ GK_STANDALONE_MODE = False
 FORCE_PULL = False
 
 # Automatically deploy SAPs (endpoints) of the service as new containers
+# Attention: This is not a configuration switch but a global variable! Don't change its default value.
 DEPLOY_SAP = False
 
+# flag to indicate if we use bidirectional forwarding rules in the automatic chaining process
+BIDIRECTIONAL_CHAIN = False
+
 class Gatekeeper(object):
 
     def __init__(self):
@@ -163,7 +167,8 @@ class Service(object):
 
         # 3. compute placement of this service instance (adds DC names to VNFDs)
         if not GK_STANDALONE_MODE:
-            self._calculate_placement(FirstDcPlacement)
+            #self._calculate_placement(FirstDcPlacement)
+            self._calculate_placement(RoundRobinDcPlacement)
         # iterate over all vnfds that we have to start
         for vnfd in self.vnfds.itervalues():
             vnfi = None
@@ -210,7 +215,7 @@ class Service(object):
                 ret = network.setChain(
                     src_docker_name, dst_docker_name,
                     vnf_src_interface=src_if_name, vnf_dst_interface=dst_if_name,
-                    bidirectional=True, cmd="add-flow", cookie=cookie, priority=10)
+                    bidirectional=BIDIRECTIONAL_CHAIN, cmd="add-flow", cookie=cookie, priority=10)
 
                 # re-configure the VNFs IP assignment and ensure that a new subnet is used for each E-Link
                 src_vnfi = self._get_vnf_instance(instance_uuid, src_name)
@@ -238,8 +243,8 @@ class Service(object):
 
                 if vnf_name in self.vnfds:
                     # re-configure the VNFs IP assignment and ensure that a new subnet is used for each E-LAN
-                    # E-LAN relies on the learning switch capability of the infrastructure switch in dockernet,
-                    # so no explicit chaining is necessary
+                    # E-LAN relies on the learning switch capability of Ryu which has to be turned on in the topology
+                    # (DCNetwork(controller=RemoteController, enable_learning=True)), so no explicit chaining is necessary.
                     vnfi = self._get_vnf_instance(instance_uuid, vnf_name)
                     if vnfi is not None:
                         self._vnf_reconfigure_network(vnfi, intf_name, ip_address)
@@ -393,7 +398,7 @@ class Service(object):
             # set of the connection_point ids found in the nsd (in the examples this is 'ns')
             self.sap_identifiers.add(sap_vnf_id)
 
-            sap_docker_name = sap.replace(':', '_')
+            sap_docker_name = "%s_%s" % (sap_vnf_id, sap_vnf_interface)
 
             # add SAP to self.vnfds
             sapfile = pkg_resources.resource_filename(__name__, "sap_vnfd.yml")
@@ -501,6 +506,20 @@ class FirstDcPlacement(object):
             vnfd["dc"] = list(dcs.itervalues())[0]
 
 
+class RoundRobinDcPlacement(object):
+    """
+    Placement: Distribute VNFs across all available DCs in a round robin fashion.
+    """
+    def place(self, nsd, vnfds, dcs):
+        c = 0
+        dcs_list = list(dcs.itervalues()) 
+        for name, vnfd in vnfds.iteritems():
+            vnfd["dc"] = dcs_list[c % len(dcs_list)]
+            c += 1  # inc. c to use next DC
+
+
+
+
 """
 Resource definitions and API endpoints
 """