Merge pull request #79 from mpeuster/master
authorpeusterm <manuel.peuster@uni-paderborn.de>
Sun, 17 Apr 2016 01:13:58 +0000 (18:13 -0700)
committerpeusterm <manuel.peuster@uni-paderborn.de>
Sun, 17 Apr 2016 01:13:58 +0000 (18:13 -0700)
Resource model logging

src/emuvim/dcemulator/node.py
src/emuvim/dcemulator/resourcemodel/__init__.py
src/emuvim/dcemulator/resourcemodel/upb/simple.py
src/emuvim/test/test_resourcemodel.py [new file with mode: 0644]
src/emuvim/test/test_resourcemodel_api.py [deleted file]

index 94d047b..1229b8d 100755 (executable)
@@ -49,6 +49,7 @@ class EmulatorCompute(Docker):
         status["name"] = self.name
         status["network"] = self.getNetworkStatus()
         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
@@ -152,6 +153,7 @@ 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)
 
         # connect all given networks
         # if no --net option is given, network = [{}], so 1 empty dict in the list
@@ -161,25 +163,6 @@ class Datacenter(object):
             self.net.addLink(d, self.switch, params1=nw, cls=Link)
         # 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):
@@ -194,6 +177,7 @@ class Datacenter(object):
         # 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 +187,6 @@ 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):
index 3df414f..21d0868 100644 (file)
@@ -130,3 +130,31 @@ class BaseResourceModel(object):
         :return:
         """
         return dict()
+
+    def write_allocation_log(self, d, path):
+        """
+        Helper to log RM info for experiments.
+        :param d: container
+        :param path: log path
+        :return:
+        """
+        self._write_log(d, path, "allocate")
+
+    def write_free_log(self, d, path):
+        """
+        Helper to log RM info for experiments.
+        :param d: container
+        :param path: log path
+        :return:
+        """
+        self._write_log(d, path, "free")
+
+    def _write_log(self, d, path, action):
+        """
+        Helper to log RM info for experiments.
+        :param d: container
+        :param path: log path
+        :param action: allocate or free
+        :return:
+        """
+        pass
\ No newline at end of file
index ff0c852..9d5df06 100644 (file)
@@ -1,6 +1,8 @@
 """
 Playground for resource models created by University of Paderborn.
 """
+import time
+import json
 import logging
 from emuvim.dcemulator.resourcemodel import BaseResourceModel
 
@@ -157,7 +159,7 @@ class UpbSimpleCloudDcRM(BaseResourceModel):
         # ATTENTION minimum mem_limit per container is 4MB
         if mem_limit < 4:
             mem_limit = 4
-            LOG.warning("Increased MEM limit for %r because it was less than 4.0 MB." % name)
+            LOG.warning("Increased MEM limit for %r because it was less than 4.0 MB." % d.name)
         # to byte!
         mem_limit = int(mem_limit*1024*1024)
         # apply to container if changed
@@ -171,7 +173,17 @@ class UpbSimpleCloudDcRM(BaseResourceModel):
         Helper method for logging functionality.
         :return:
         """
-        # TODO update
+        # collect info about all allocated instances
+        allocation_state = dict()
+        for k, d in self._allocated_compute_instances.iteritems():
+            s = dict()
+            s["cpu_period"] = d.cpu_period
+            s["cpu_quota"] = d.cpu_quota
+            s["cpu_shares"] = d.cpu_shares
+            s["mem_limit"] = d.mem_limit
+            s["memswap_limit"] = d.memswap_limit
+            allocation_state[k] = s
+        # final result
         r = dict()
         r["e_cpu"] = self.registrar.e_cpu
         r["e_mem"] = self.registrar.e_mem
@@ -179,9 +191,7 @@ class UpbSimpleCloudDcRM(BaseResourceModel):
         r["dc_max_mu"] = self.dc_max_mu
         r["dc_alloc_cu"] = self.dc_alloc_cu
         r["dc_alloc_mu"] = self.dc_alloc_mu
-        r["cu_cpu_percentage"] = -1
-        r["mu_mem_percentage"] = -1
-        r["allocated_compute_instances"] = None #self._allocated_compute_instances
+        r["allocation_state"] = allocation_state
         return r
 
     def _get_flavor(self, d):
@@ -194,3 +204,23 @@ class UpbSimpleCloudDcRM(BaseResourceModel):
         if d.flavor_name not in self._flavors:
             raise Exception("Flavor %r does not exist" % d.flavor_name)
         return self._flavors.get(d.flavor_name)
+
+    def _write_log(self, d, path, action):
+        """
+        Helper to log RM info for experiments.
+        :param d: container
+        :param path: log path
+        :param action: allocate or free
+        :return:
+        """
+        if path is None:
+            return
+        # we have a path: write out RM info
+        l = dict()
+        l["t"] = time.time()
+        l["container_state"] = d.getStatus()
+        l["action"] = action
+        l["rm_state"] = self.get_state_dict()
+        # append to logfile
+        with open(path, "a") as f:
+            f.write("%s\n" % json.dumps(l))
diff --git a/src/emuvim/test/test_resourcemodel.py b/src/emuvim/test/test_resourcemodel.py
new file mode 100644 (file)
index 0000000..a11bc8b
--- /dev/null
@@ -0,0 +1,263 @@
+import time
+import os
+from emuvim.test.base import SimpleTestTopology
+from emuvim.dcemulator.resourcemodel import BaseResourceModel, ResourceFlavor
+from emuvim.dcemulator.resourcemodel.upb.simple import UpbSimpleCloudDcRM
+from emuvim.dcemulator.resourcemodel import ResourceModelRegistrar
+
+
+class testResourceModel(SimpleTestTopology):
+    """
+    Test the general resource model API and functionality.
+    """
+
+    def testBaseResourceModelApi(self):
+        """
+        Tast bare API without real resource madel.
+        :return:
+        """
+        r = BaseResourceModel()
+        # check if default flavors are there
+        self.assertTrue(len(r._flavors) == 5)
+        # check addFlavor functionality
+        f = ResourceFlavor("test", {"testmetric": 42})
+        r.addFlavour(f)
+        self.assertTrue("test" in r._flavors)
+        self.assertTrue(r._flavors.get("test").get("testmetric") == 42)
+
+    def testAddRmToDc(self):
+        """
+        Test is allocate/free is called when a RM is added to a DC.
+        :return:
+        """
+        # create network
+        self.createNet(nswitches=0, ndatacenter=1, nhosts=2, ndockers=0)
+        # setup links
+        self.net.addLink(self.dc[0], self.h[0])
+        self.net.addLink(self.h[1], self.dc[0])
+        # add resource model
+        r = BaseResourceModel()
+        self.dc[0].assignResourceModel(r)
+        # start Mininet network
+        self.startNet()
+        # check number of running nodes
+        self.assertTrue(len(self.getDockernetContainers()) == 0)
+        self.assertTrue(len(self.net.hosts) == 2)
+        self.assertTrue(len(self.net.switches) == 1)
+        # check resource model and resource model registrar
+        self.assertTrue(self.dc[0]._resource_model is not None)
+        self.assertTrue(len(self.net.rm_registrar.resource_models) == 1)
+
+        # check if alloc was called during startCompute
+        self.assertTrue(len(r._allocated_compute_instances) == 0)
+        self.dc[0].startCompute("tc1")
+        time.sleep(1)
+        self.assertTrue(len(r._allocated_compute_instances) == 1)
+        # check if free was called during stopCompute
+        self.dc[0].stopCompute("tc1")
+        self.assertTrue(len(r._allocated_compute_instances) == 0)
+        # check connectivity by using ping
+        self.assertTrue(self.net.ping([self.h[0], self.h[1]]) <= 0.0)
+        # stop Mininet network
+        self.stopNet()
+
+
+def createDummyContainerObject(name, flavor):
+
+    class DummyContainer(object):
+
+        def __init__(self):
+            self.cpu_period = -1
+            self.cpu_quota = -1
+            self.mem_limit = -1
+            self.memswap_limit = -1
+
+        def updateCpuLimit(self, cpu_period, cpu_quota):
+            self.cpu_period = cpu_period
+            self.cpu_quota = cpu_quota
+
+        def updateMemoryLimit(self, mem_limit):
+            self.mem_limit = mem_limit
+
+    d = DummyContainer()
+    d.name = name
+    d.flavor_name = flavor
+    return d
+
+
+
+
+class testUpbSimpleCloudDcRM(SimpleTestTopology):
+    """
+    Test the UpbSimpleCloudDc resource model.
+    """
+
+    def testAllocation(self):
+        """
+        Test the allocation procedures and correct calculations.
+        :return:
+        """
+        # config
+        E_CPU = 1.0
+        MAX_CU = 100
+        E_MEM = 512
+        MAX_MU = 2048
+        # create dummy resource model environment
+        reg = ResourceModelRegistrar(dc_emulation_max_cpu=E_CPU, dc_emulation_max_mem=E_MEM)
+        rm = UpbSimpleCloudDcRM(max_cu=MAX_CU, max_mu=MAX_MU)
+        reg.register("test_dc", rm)
+
+        c1 = createDummyContainerObject("c1", flavor="tiny")
+        rm.allocate(c1)  # calculate allocation
+        self.assertEqual(float(c1.cpu_quota) / c1.cpu_period, E_CPU / MAX_CU * 0.5)   # validate compute result
+        self.assertEqual(float(c1.mem_limit/1024/1024), float(E_MEM) / MAX_MU * 32)   # validate memory result
+
+        c2 = createDummyContainerObject("c2", flavor="small")
+        rm.allocate(c2)  # calculate allocation
+        self.assertEqual(float(c2.cpu_quota) / c2.cpu_period, E_CPU / MAX_CU * 1)   # validate compute result
+        self.assertEqual(float(c2.mem_limit/1024/1024), float(E_MEM) / MAX_MU * 128)   # validate memory result
+
+
+        c3 = createDummyContainerObject("c3", flavor="medium")
+        res = rm.allocate(c3)  # calculate allocation
+        self.assertEqual(float(c3.cpu_quota) / c3.cpu_period, E_CPU / MAX_CU * 4)   # validate compute result
+        self.assertEqual(float(c3.mem_limit/1024/1024), float(E_MEM) / MAX_MU * 256)   # validate memory result
+
+
+        c4 = createDummyContainerObject("c4", flavor="large")
+        rm.allocate(c4)  # calculate allocation
+        self.assertEqual(float(c4.cpu_quota) / c4.cpu_period, E_CPU / MAX_CU * 8)   # validate compute result
+        self.assertEqual(float(c4.mem_limit/1024/1024), float(E_MEM) / MAX_MU * 512)   # validate memory result
+
+
+        c5 = createDummyContainerObject("c5", flavor="xlarge")
+        rm.allocate(c5)  # calculate allocation
+        self.assertEqual(float(c5.cpu_quota) / c5.cpu_period, E_CPU / MAX_CU * 16)   # validate compute result
+        self.assertEqual(float(c5.mem_limit/1024/1024), float(E_MEM) / MAX_MU * 1024)   # validate memory result
+
+
+    def testAllocationCpuLimit(self):
+        """
+        Test CPU allocation limit
+        :return:
+        """
+        # config
+        E_CPU = 1.0
+        MAX_CU = 40
+        E_MEM = 512
+        MAX_MU = 4096
+        # create dummy resource model environment
+        reg = ResourceModelRegistrar(dc_emulation_max_cpu=E_CPU, dc_emulation_max_mem=E_MEM)
+        rm = UpbSimpleCloudDcRM(max_cu=MAX_CU, max_mu=MAX_MU)
+        reg.register("test_dc", rm)
+
+        # test over provisioning exeption
+        exception = False
+        try:
+            c6 = createDummyContainerObject("c6", flavor="xlarge")
+            c7 = createDummyContainerObject("c7", flavor="xlarge")
+            c8 = createDummyContainerObject("c8", flavor="xlarge")
+            c9 = createDummyContainerObject("c9", flavor="xlarge")
+            rm.allocate(c6)  # calculate allocation
+            rm.allocate(c7)  # calculate allocation
+            rm.allocate(c8)  # calculate allocation
+            rm.allocate(c9)  # calculate allocation
+        except Exception as e:
+            self.assertIn("Not enough compute", e.message)
+            exception = True
+        self.assertTrue(exception)
+
+    def testAllocationMemLimit(self):
+        """
+        Test MEM allocation limit
+        :return:
+        """
+        # config
+        E_CPU = 1.0
+        MAX_CU = 500
+        E_MEM = 512
+        MAX_MU = 2048
+        # create dummy resource model environment
+        reg = ResourceModelRegistrar(dc_emulation_max_cpu=E_CPU, dc_emulation_max_mem=E_MEM)
+        rm = UpbSimpleCloudDcRM(max_cu=MAX_CU, max_mu=MAX_MU)
+        reg.register("test_dc", rm)
+
+        # test over provisioning exeption
+        exception = False
+        try:
+            c6 = createDummyContainerObject("c6", flavor="xlarge")
+            c7 = createDummyContainerObject("c7", flavor="xlarge")
+            c8 = createDummyContainerObject("c8", flavor="xlarge")
+            rm.allocate(c6)  # calculate allocation
+            rm.allocate(c7)  # calculate allocation
+            rm.allocate(c8)  # calculate allocation
+        except Exception as e:
+            self.assertIn("Not enough memory", e.message)
+            exception = True
+        self.assertTrue(exception)
+
+    def testFree(self):
+        """
+        Test the free procedure.
+        :return:
+        """
+        # config
+        E_CPU = 1.0
+        MAX_CU = 100
+        # create dummy resource model environment
+        reg = ResourceModelRegistrar(dc_emulation_max_cpu=1.0, dc_emulation_max_mem=512)
+        rm = UpbSimpleCloudDcRM(max_cu=100, max_mu=100)
+        reg.register("test_dc", rm)
+        c1 = createDummyContainerObject("c6", flavor="tiny")
+        rm.allocate(c1)  # calculate allocation
+        self.assertTrue(rm.dc_alloc_cu == 0.5)
+        rm.free(c1)
+        self.assertTrue(rm.dc_alloc_cu == 0)
+
+    def testInRealTopo(self):
+        """
+        Start a real container and check if limitations are really passed down to Dockernet.
+        :return:
+        """
+        # ATTENTION: This test should only be executed if emu runs not inside a Docker container,
+        # because it manipulates cgroups.
+        if os.environ.get("SON_EMU_IN_DOCKER") is not None:
+            return
+        # create network
+        self.createNet(nswitches=0, ndatacenter=1, nhosts=2, ndockers=0)
+        # setup links
+        self.net.addLink(self.dc[0], self.h[0])
+        self.net.addLink(self.h[1], self.dc[0])
+        # add resource model
+        r = UpbSimpleCloudDcRM(max_cu=100, max_mu=100)
+        self.dc[0].assignResourceModel(r)
+        # start Mininet network
+        self.startNet()
+        # check number of running nodes
+        self.assertTrue(len(self.getDockernetContainers()) == 0)
+        self.assertTrue(len(self.net.hosts) == 2)
+        self.assertTrue(len(self.net.switches) == 1)
+        # check resource model and resource model registrar
+        self.assertTrue(self.dc[0]._resource_model is not None)
+        self.assertTrue(len(self.net.rm_registrar.resource_models) == 1)
+
+        # check if alloc was called during startCompute
+        self.assertTrue(len(r._allocated_compute_instances) == 0)
+        tc1 = self.dc[0].startCompute("tc1", flavor_name="tiny")
+        time.sleep(1)
+        self.assertTrue(len(r._allocated_compute_instances) == 1)
+
+        # check if there is a real limitation set for containers cgroup
+        # deactivated for now, seems not to work in docker-in-docker setup used in CI
+        self.assertEqual(float(tc1.cpu_quota)/tc1.cpu_period, 0.005)
+
+        # check if free was called during stopCompute
+        self.dc[0].stopCompute("tc1")
+        self.assertTrue(len(r._allocated_compute_instances) == 0)
+        # check connectivity by using ping
+        self.assertTrue(self.net.ping([self.h[0], self.h[1]]) <= 0.0)
+        # stop Mininet network
+        self.stopNet()
+
+
+
diff --git a/src/emuvim/test/test_resourcemodel_api.py b/src/emuvim/test/test_resourcemodel_api.py
deleted file mode 100644 (file)
index a11bc8b..0000000
+++ /dev/null
@@ -1,263 +0,0 @@
-import time
-import os
-from emuvim.test.base import SimpleTestTopology
-from emuvim.dcemulator.resourcemodel import BaseResourceModel, ResourceFlavor
-from emuvim.dcemulator.resourcemodel.upb.simple import UpbSimpleCloudDcRM
-from emuvim.dcemulator.resourcemodel import ResourceModelRegistrar
-
-
-class testResourceModel(SimpleTestTopology):
-    """
-    Test the general resource model API and functionality.
-    """
-
-    def testBaseResourceModelApi(self):
-        """
-        Tast bare API without real resource madel.
-        :return:
-        """
-        r = BaseResourceModel()
-        # check if default flavors are there
-        self.assertTrue(len(r._flavors) == 5)
-        # check addFlavor functionality
-        f = ResourceFlavor("test", {"testmetric": 42})
-        r.addFlavour(f)
-        self.assertTrue("test" in r._flavors)
-        self.assertTrue(r._flavors.get("test").get("testmetric") == 42)
-
-    def testAddRmToDc(self):
-        """
-        Test is allocate/free is called when a RM is added to a DC.
-        :return:
-        """
-        # create network
-        self.createNet(nswitches=0, ndatacenter=1, nhosts=2, ndockers=0)
-        # setup links
-        self.net.addLink(self.dc[0], self.h[0])
-        self.net.addLink(self.h[1], self.dc[0])
-        # add resource model
-        r = BaseResourceModel()
-        self.dc[0].assignResourceModel(r)
-        # start Mininet network
-        self.startNet()
-        # check number of running nodes
-        self.assertTrue(len(self.getDockernetContainers()) == 0)
-        self.assertTrue(len(self.net.hosts) == 2)
-        self.assertTrue(len(self.net.switches) == 1)
-        # check resource model and resource model registrar
-        self.assertTrue(self.dc[0]._resource_model is not None)
-        self.assertTrue(len(self.net.rm_registrar.resource_models) == 1)
-
-        # check if alloc was called during startCompute
-        self.assertTrue(len(r._allocated_compute_instances) == 0)
-        self.dc[0].startCompute("tc1")
-        time.sleep(1)
-        self.assertTrue(len(r._allocated_compute_instances) == 1)
-        # check if free was called during stopCompute
-        self.dc[0].stopCompute("tc1")
-        self.assertTrue(len(r._allocated_compute_instances) == 0)
-        # check connectivity by using ping
-        self.assertTrue(self.net.ping([self.h[0], self.h[1]]) <= 0.0)
-        # stop Mininet network
-        self.stopNet()
-
-
-def createDummyContainerObject(name, flavor):
-
-    class DummyContainer(object):
-
-        def __init__(self):
-            self.cpu_period = -1
-            self.cpu_quota = -1
-            self.mem_limit = -1
-            self.memswap_limit = -1
-
-        def updateCpuLimit(self, cpu_period, cpu_quota):
-            self.cpu_period = cpu_period
-            self.cpu_quota = cpu_quota
-
-        def updateMemoryLimit(self, mem_limit):
-            self.mem_limit = mem_limit
-
-    d = DummyContainer()
-    d.name = name
-    d.flavor_name = flavor
-    return d
-
-
-
-
-class testUpbSimpleCloudDcRM(SimpleTestTopology):
-    """
-    Test the UpbSimpleCloudDc resource model.
-    """
-
-    def testAllocation(self):
-        """
-        Test the allocation procedures and correct calculations.
-        :return:
-        """
-        # config
-        E_CPU = 1.0
-        MAX_CU = 100
-        E_MEM = 512
-        MAX_MU = 2048
-        # create dummy resource model environment
-        reg = ResourceModelRegistrar(dc_emulation_max_cpu=E_CPU, dc_emulation_max_mem=E_MEM)
-        rm = UpbSimpleCloudDcRM(max_cu=MAX_CU, max_mu=MAX_MU)
-        reg.register("test_dc", rm)
-
-        c1 = createDummyContainerObject("c1", flavor="tiny")
-        rm.allocate(c1)  # calculate allocation
-        self.assertEqual(float(c1.cpu_quota) / c1.cpu_period, E_CPU / MAX_CU * 0.5)   # validate compute result
-        self.assertEqual(float(c1.mem_limit/1024/1024), float(E_MEM) / MAX_MU * 32)   # validate memory result
-
-        c2 = createDummyContainerObject("c2", flavor="small")
-        rm.allocate(c2)  # calculate allocation
-        self.assertEqual(float(c2.cpu_quota) / c2.cpu_period, E_CPU / MAX_CU * 1)   # validate compute result
-        self.assertEqual(float(c2.mem_limit/1024/1024), float(E_MEM) / MAX_MU * 128)   # validate memory result
-
-
-        c3 = createDummyContainerObject("c3", flavor="medium")
-        res = rm.allocate(c3)  # calculate allocation
-        self.assertEqual(float(c3.cpu_quota) / c3.cpu_period, E_CPU / MAX_CU * 4)   # validate compute result
-        self.assertEqual(float(c3.mem_limit/1024/1024), float(E_MEM) / MAX_MU * 256)   # validate memory result
-
-
-        c4 = createDummyContainerObject("c4", flavor="large")
-        rm.allocate(c4)  # calculate allocation
-        self.assertEqual(float(c4.cpu_quota) / c4.cpu_period, E_CPU / MAX_CU * 8)   # validate compute result
-        self.assertEqual(float(c4.mem_limit/1024/1024), float(E_MEM) / MAX_MU * 512)   # validate memory result
-
-
-        c5 = createDummyContainerObject("c5", flavor="xlarge")
-        rm.allocate(c5)  # calculate allocation
-        self.assertEqual(float(c5.cpu_quota) / c5.cpu_period, E_CPU / MAX_CU * 16)   # validate compute result
-        self.assertEqual(float(c5.mem_limit/1024/1024), float(E_MEM) / MAX_MU * 1024)   # validate memory result
-
-
-    def testAllocationCpuLimit(self):
-        """
-        Test CPU allocation limit
-        :return:
-        """
-        # config
-        E_CPU = 1.0
-        MAX_CU = 40
-        E_MEM = 512
-        MAX_MU = 4096
-        # create dummy resource model environment
-        reg = ResourceModelRegistrar(dc_emulation_max_cpu=E_CPU, dc_emulation_max_mem=E_MEM)
-        rm = UpbSimpleCloudDcRM(max_cu=MAX_CU, max_mu=MAX_MU)
-        reg.register("test_dc", rm)
-
-        # test over provisioning exeption
-        exception = False
-        try:
-            c6 = createDummyContainerObject("c6", flavor="xlarge")
-            c7 = createDummyContainerObject("c7", flavor="xlarge")
-            c8 = createDummyContainerObject("c8", flavor="xlarge")
-            c9 = createDummyContainerObject("c9", flavor="xlarge")
-            rm.allocate(c6)  # calculate allocation
-            rm.allocate(c7)  # calculate allocation
-            rm.allocate(c8)  # calculate allocation
-            rm.allocate(c9)  # calculate allocation
-        except Exception as e:
-            self.assertIn("Not enough compute", e.message)
-            exception = True
-        self.assertTrue(exception)
-
-    def testAllocationMemLimit(self):
-        """
-        Test MEM allocation limit
-        :return:
-        """
-        # config
-        E_CPU = 1.0
-        MAX_CU = 500
-        E_MEM = 512
-        MAX_MU = 2048
-        # create dummy resource model environment
-        reg = ResourceModelRegistrar(dc_emulation_max_cpu=E_CPU, dc_emulation_max_mem=E_MEM)
-        rm = UpbSimpleCloudDcRM(max_cu=MAX_CU, max_mu=MAX_MU)
-        reg.register("test_dc", rm)
-
-        # test over provisioning exeption
-        exception = False
-        try:
-            c6 = createDummyContainerObject("c6", flavor="xlarge")
-            c7 = createDummyContainerObject("c7", flavor="xlarge")
-            c8 = createDummyContainerObject("c8", flavor="xlarge")
-            rm.allocate(c6)  # calculate allocation
-            rm.allocate(c7)  # calculate allocation
-            rm.allocate(c8)  # calculate allocation
-        except Exception as e:
-            self.assertIn("Not enough memory", e.message)
-            exception = True
-        self.assertTrue(exception)
-
-    def testFree(self):
-        """
-        Test the free procedure.
-        :return:
-        """
-        # config
-        E_CPU = 1.0
-        MAX_CU = 100
-        # create dummy resource model environment
-        reg = ResourceModelRegistrar(dc_emulation_max_cpu=1.0, dc_emulation_max_mem=512)
-        rm = UpbSimpleCloudDcRM(max_cu=100, max_mu=100)
-        reg.register("test_dc", rm)
-        c1 = createDummyContainerObject("c6", flavor="tiny")
-        rm.allocate(c1)  # calculate allocation
-        self.assertTrue(rm.dc_alloc_cu == 0.5)
-        rm.free(c1)
-        self.assertTrue(rm.dc_alloc_cu == 0)
-
-    def testInRealTopo(self):
-        """
-        Start a real container and check if limitations are really passed down to Dockernet.
-        :return:
-        """
-        # ATTENTION: This test should only be executed if emu runs not inside a Docker container,
-        # because it manipulates cgroups.
-        if os.environ.get("SON_EMU_IN_DOCKER") is not None:
-            return
-        # create network
-        self.createNet(nswitches=0, ndatacenter=1, nhosts=2, ndockers=0)
-        # setup links
-        self.net.addLink(self.dc[0], self.h[0])
-        self.net.addLink(self.h[1], self.dc[0])
-        # add resource model
-        r = UpbSimpleCloudDcRM(max_cu=100, max_mu=100)
-        self.dc[0].assignResourceModel(r)
-        # start Mininet network
-        self.startNet()
-        # check number of running nodes
-        self.assertTrue(len(self.getDockernetContainers()) == 0)
-        self.assertTrue(len(self.net.hosts) == 2)
-        self.assertTrue(len(self.net.switches) == 1)
-        # check resource model and resource model registrar
-        self.assertTrue(self.dc[0]._resource_model is not None)
-        self.assertTrue(len(self.net.rm_registrar.resource_models) == 1)
-
-        # check if alloc was called during startCompute
-        self.assertTrue(len(r._allocated_compute_instances) == 0)
-        tc1 = self.dc[0].startCompute("tc1", flavor_name="tiny")
-        time.sleep(1)
-        self.assertTrue(len(r._allocated_compute_instances) == 1)
-
-        # check if there is a real limitation set for containers cgroup
-        # deactivated for now, seems not to work in docker-in-docker setup used in CI
-        self.assertEqual(float(tc1.cpu_quota)/tc1.cpu_period, 0.005)
-
-        # check if free was called during stopCompute
-        self.dc[0].stopCompute("tc1")
-        self.assertTrue(len(r._allocated_compute_instances) == 0)
-        # check connectivity by using ping
-        self.assertTrue(self.net.ping([self.h[0], self.h[1]]) <= 0.0)
-        # stop Mininet network
-        self.stopNet()
-
-
-