X-Git-Url: https://osm.etsi.org/gitweb/?a=blobdiff_plain;f=src%2Femuvim%2Fdcemulator%2Fresourcemodel%2F__init__.py;h=de100f7fcd9fa0cdc3e7ed2db74f19acd2356b4d;hb=refs%2Fchanges%2F49%2F6149%2F3;hp=52a35e5e724a3ed5b807ea3c0be4f4ec56878eba;hpb=57551f0497178f51b4cb67b3e21a949cdda8505d;p=osm%2Fvim-emu.git

diff --git a/src/emuvim/dcemulator/resourcemodel/__init__.py b/src/emuvim/dcemulator/resourcemodel/__init__.py
old mode 100644
new mode 100755
index 52a35e5..de100f7
--- a/src/emuvim/dcemulator/resourcemodel/__init__.py
+++ b/src/emuvim/dcemulator/resourcemodel/__init__.py
@@ -1,7 +1,28 @@
-"""
-Base classes needed for resource models support.
-"""
-
+# Copyright (c) 2015 SONATA-NFV and Paderborn University
+# ALL RIGHTS RESERVED.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# Neither the name of the SONATA-NFV, Paderborn University
+# nor the names of its contributors may be used to endorse or promote
+# products derived from this software without specific prior written
+# permission.
+#
+# This work has been performed in the framework of the SONATA project,
+# funded by the European Commission under Grant number 671517 through
+# the Horizon 2020 and 5G-PPP programmes. The authors would like to
+# acknowledge the contributions of their colleagues of the SONATA
+# partner consortium (www.sonata-nfv.eu).
 import logging
 LOG = logging.getLogger("resourcemodel")
 LOG.setLevel(logging.DEBUG)
@@ -12,11 +33,13 @@ class ResourceModelRegistrar(object):
     Global registry to keep track of all existing resource models.
     """
 
-    def __init__(self, dc_emulation_max_cpu):
+    def __init__(self, dc_emulation_max_cpu, dc_emulation_max_mem):
         self.e_cpu = dc_emulation_max_cpu
+        self.e_mem = dc_emulation_max_mem
         # pointer to all resource models assigned to DCs
         self._resource_models = dict()
-        LOG.info("Resource model registrar created with dc_emulation_max_cpu=%r" % dc_emulation_max_cpu)
+        LOG.info("Resource model registrar created with dc_emulation_max_cpu=%r and dc_emulation_max_mem=%r"
+                 % (dc_emulation_max_cpu, dc_emulation_max_mem))
 
     def register(self, dc, rm):
         """
@@ -26,21 +49,37 @@ class ResourceModelRegistrar(object):
         :return: None
         """
         if dc in self._resource_models:
-            raise Exception("There is already an resource model assigned to this DC.")
+            raise Exception(
+                "There is already an resource model assigned to this DC.")
         self._resource_models[dc] = rm
         rm.registrar = self
+        rm.dcs.append(dc)
         LOG.info("Registrar: Added resource model: %r" % rm)
 
     @property
     def resource_models(self):
+        """
+        List of registered resource models
+        :return:
+        """
         return list(self._resource_models.itervalues())
 
+    @property
+    def num_dcs_with_rms(self):
+        """
+        Total number of data centers that are connected to a resource model
+        :return:
+        """
+        return sum([len(rm.dcs)
+                    for rm in list(self._resource_models.itervalues())])
+
 
 class ResourceFlavor(object):
     """
     Simple class that represents resource flavors (c.f. OpenStack).
     Can contain arbitrary metrics.
     """
+
     def __init__(self, name, metrics):
         self.name = name
         self._metrics = metrics
@@ -60,7 +99,8 @@ class BaseResourceModel(object):
         self._flavors = dict()
         self._initDefaultFlavors()
         self.registrar = None  # pointer to registrar
-        self.allocated_compute_instances = dict()
+        self.dcs = list()
+        self._allocated_compute_instances = dict()
         LOG.info("Resource model %r initialized" % self)
 
     def __repr__(self):
@@ -71,15 +111,15 @@ class BaseResourceModel(object):
         initialize some default flavours (naming/sizes inspired by OpenStack)
         """
         self.addFlavour(ResourceFlavor(
-            "tiny",  {"compute": 1, "memory": 32, "disk": 1}))
+            "tiny", {"compute": 0.5, "memory": 32, "disk": 1}))
         self.addFlavour(ResourceFlavor(
-            "small",  {"compute": 4, "memory": 128, "disk": 20}))
+            "small", {"compute": 1.0, "memory": 128, "disk": 20}))
         self.addFlavour(ResourceFlavor(
-            "medium",  {"compute": 8, "memory": 256, "disk": 40}))
+            "medium", {"compute": 4.0, "memory": 256, "disk": 40}))
         self.addFlavour(ResourceFlavor(
-            "large",  {"compute": 16, "memory": 512, "disk": 80}))
+            "large", {"compute": 8.0, "memory": 512, "disk": 80}))
         self.addFlavour(ResourceFlavor(
-            "xlarge",  {"compute": 32, "memory": 1024, "disk": 160}))
+            "xlarge", {"compute": 16.0, "memory": 1024, "disk": 160}))
 
     def addFlavour(self, fl):
         """
@@ -91,23 +131,59 @@ class BaseResourceModel(object):
             raise Exception("Flavor with name %r already exists!" % fl.name)
         self._flavors[fl.name] = fl
 
-    def allocate(self, name, flavor_name):
+    def allocate(self, d):
         """
         This method has to be overwritten by a real resource model.
-        :param name: Name of the started compute instance.
-        :param flavor_name:  Name of the flavor to be allocated.
-        :return: 3-tuple: (CPU-fraction, Mem-limit, Disk-limit)
+        :param d: Container object
         """
-        LOG.warning("Allocating in BaseResourceModel: %r with flavor: %r" % (name, flavor_name))
-        self.allocated_compute_instances[name] = flavor_name
-        return -1.0, -1.0, -1.0  # return invalid values to indicate that this RM is a dummy
+        LOG.warning("Allocating in BaseResourceModel: %r with flavor: %r" % (
+            d.name, d.flavor_name))
+        self._allocated_compute_instances[d.name] = d.flavor_name
 
-    def free(self, name):
+    def free(self, d):
         """
         This method has to be overwritten by a real resource model.
-        :param name: Name of the compute instance that is stopped.
-        :return: True/False
+        :param d: Container object
+        """
+        LOG.warning("Free in BaseResourceModel: %r" % d.name)
+        del self._allocated_compute_instances[d.name]
+
+    def get_state_dict(self):
+        """
+        Return the state of the resource model as simple dict.
+        Helper method for logging functionality.
+        :return:
         """
-        LOG.warning("Free in BaseResourceModel: %r" % name)
-        del self.allocated_compute_instances[name]
-        return True
+        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
+
+
+class NotEnoughResourcesAvailable(BaseException):
+    pass