First part of Containernet re-integration

[osm/vim-emu.git] / src / emuvim / dcemulator / node.py

diff --git a/src/emuvim/dcemulator/node.py b/src/emuvim/dcemulator/node.py
index decff2b..f9328e3 100755 (executable)
--- a/src/emuvim/dcemulator/node.py
+++ b/src/emuvim/dcemulator/node.py
@@ -4,6 +4,7 @@ Distributed Cloud Emulator (dcemulator)
 """
 from mininet.node import Docker
 from mininet.link import Link
+from emuvim.dcemulator.resourcemodel import NotEnoughResourcesAvailable
 import logging
 import time
 import json
@@ -18,7 +19,7 @@ DCDPID_BASE = 1000  # start of switch dpid's used for data center switches
 class EmulatorCompute(Docker):
     """
     Emulator specific compute node class.
-    Inherits from Dockernet's Docker host class.
+    Inherits from Containernet's Docker host class.
     Represents a single container connected to a (logical)
     data center.
     We can add emulator specific helper functions to it.
@@ -38,7 +39,7 @@ class EmulatorCompute(Docker):
         this compute instance is connected to.
         """
         # format list of tuples (name, Ip, MAC, isUp, status)
-        return [(str(i), i.IP(), i.MAC(), i.isUp(), i.status())
+        return [{'intf_name':str(i), 'ip':i.IP(), 'mac':i.MAC(), 'up':i.isUp(), 'status':i.status()}
                 for i in self.intfList()]
 
     def getStatus(self):
@@ -48,6 +49,7 @@ class EmulatorCompute(Docker):
         status = {}
         status["name"] = self.name
         status["network"] = self.getNetworkStatus()
+        status["docker_network"] = self.dcinfo['NetworkSettings']['IPAddress']
         status["image"] = self.dimage
         status["flavor_name"] = self.flavor_name
         status["cpu_quota"] = self.cpu_quota
@@ -152,15 +154,22 @@ class Datacenter(object):
 
         # apply resource limits to container if a resource model is defined
         if self._resource_model is not None:
-            self._resource_model.allocate(d)
-            self._resource_model.write_allocation_log(d, self.resource_log_path)
+            try:
+                self._resource_model.allocate(d)
+                self._resource_model.write_allocation_log(d, self.resource_log_path)
+            except NotEnoughResourcesAvailable as ex:
+                LOG.warning("Allocation of container %r was blocked by resource model." % name)
+                LOG.info(ex.message)
+                # ensure that we remove the container
+                self.net.removeDocker(name)
+                return None
 
         # connect all given networks
         # if no --net option is given, network = [{}], so 1 empty dict in the list
         # this results in 1 default interface with a default ip address
         for nw in network:
-            # TODO we cannot use TCLink here (see: https://github.com/mpeuster/dockernet/issues/3)
-            self.net.addLink(d, self.switch, params1=nw, cls=Link)
+            # TODO we cannot use TCLink here (see: https://github.com/mpeuster/containernet/issues/3)
+            self.net.addLink(d, self.switch, params1=nw, cls=Link, intfName1=nw.get('id'))
         # do bookkeeping
         self.containers[name] = d
         return d  # we might use UUIDs for naming later on
@@ -174,6 +183,10 @@ class Datacenter(object):
             raise Exception("Container with name %s not found." % name)
         LOG.debug("Stopping compute instance %r in data center %r" % (name, str(self)))
 
+        #  stop the monitored metrics
+        if self.net.monitor_agent is not None:
+            self.net.monitor_agent.stop_metric(name)
+
         # call resource model and free resources
         if self._resource_model is not None:
             self._resource_model.free(self.containers[name])