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 94d047b..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):
@@ -48,7 +49,9 @@ 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
         status["cpu_period"] = self.cpu_period
         status["cpu_shares"] = self.cpu_shares
@@ -131,7 +134,7 @@ class Datacenter(object):
             raise Exception("Container with name %s already exists." % name)
         # set default parameter
         if image is None:
-            image = "ubuntu"
+            image = "ubuntu:trusty"
         if network is None:
             network = {}  # {"ip": "10.0.0.254/8"}
         if isinstance(network, dict):
@@ -151,35 +154,24 @@ 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)
+            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
-
-        # TODO re-enable logging
-        """
-        # write resource log if a path is given
-        if self.resource_log_path is not None:
-            l = dict()
-            l["t"] = time.time()
-            l["name"] = name
-            l["compute"] = d.getStatus()
-            l["flavor_name"] = flavor_name
-            l["action"] = "allocate"
-            l["cpu_limit"] = cpu_limit
-            l["mem_limit"] = mem_limit
-            l["disk_limit"] = disk_limit
-            l["rm_state"] = None if self._resource_model is None else self._resource_model.get_state_dict()
-            # append to logfile
-            with open(self.resource_log_path, "a") as f:
-                f.write("%s\n" % json.dumps(l))
-        """
         return d  # we might use UUIDs for naming later on
 
     def stopCompute(self, name):
@@ -191,9 +183,14 @@ 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])
+            self._resource_model.write_free_log(self.containers[name], self.resource_log_path)
 
         # remove links
         self.net.removeLink(
@@ -203,23 +200,6 @@ class Datacenter(object):
         self.net.removeDocker("%s" % (name))
         del self.containers[name]
 
-        # TODO re-enable logging
-        """
-        # write resource log if a path is given
-        if self.resource_log_path is not None:
-            l = dict()
-            l["t"] = time.time()
-            l["name"] = name
-            l["flavor_name"] = None
-            l["action"] = "free"
-            l["cpu_limit"] = -1
-            l["mem_limit"] = -1
-            l["disk_limit"] = -1
-            l["rm_state"] = None if self._resource_model is None else self._resource_model.get_state_dict()
-            # append to logfile
-            with open(self.resource_log_path, "a") as f:
-                f.write("%s\n" % json.dumps(l))
-        """
         return True
 
     def listCompute(self):