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-rwxr-xr-xcore/loader/loader.py153
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+# Copyright 2015 Intel Corporation.
+#
+# 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.
+
+"""Loader module definition.
+"""
+
+from conf import settings
+from core.loader.loader_servant import LoaderServant
+from tools.pkt_gen.trafficgen import ITrafficGenerator
+from tools.collectors.collector import ICollector
+from vswitches.vswitch import IVSwitch
+
+class Loader(object):
+ """Loader class - main object context holder.
+ """
+ _trafficgen_loader = None
+ _metrics_loader = None
+ _vswitch_loader = None
+
+ def __init__(self):
+ """Loader ctor - initialization method.
+
+ All data is read from configuration each time Loader instance is
+ created. It is up to creator to maintain object life cycle if this
+ behavior is unwanted.
+ """
+ self._trafficgen_loader = LoaderServant(
+ settings.getValue('TRAFFICGEN_DIR'),
+ settings.getValue('TRAFFICGEN'),
+ ITrafficGenerator)
+
+ self._metrics_loader = LoaderServant(
+ settings.getValue('COLLECTOR_DIR'),
+ settings.getValue('COLLECTOR'),
+ ICollector)
+
+ self._vswitch_loader = LoaderServant(
+ settings.getValue('VSWITCH_DIR'),
+ settings.getValue('VSWITCH'),
+ IVSwitch)
+
+ def get_trafficgen(self):
+ """Returns a new instance configured traffic generator.
+
+ :return: ITrafficGenerator implementation if available, None otherwise.
+ """
+ return self._trafficgen_loader.get_class()()
+
+ def get_trafficgen_class(self):
+ """Returns type of currently configured traffic generator.
+
+ :return: Type of ITrafficGenerator implementation if available.
+ None otherwise.
+ """
+ return self._trafficgen_loader.get_class()
+
+ def get_trafficgens(self):
+ """Returns dictionary of all available traffic generators.
+
+ :return: Dictionary of traffic generators.
+ - key: name of the class which implements ITrafficGenerator,
+ - value: Type of traffic generator which implements
+ ITrafficGenerator.
+ """
+ return self._trafficgen_loader.get_classes()
+
+ def get_trafficgens_printable(self):
+ """Returns all available traffic generators in printable format.
+
+ :return: String containing printable list of traffic generators.
+ """
+ return self._trafficgen_loader.get_classes_printable()
+
+ def get_collector(self):
+ """Returns instance of currently configured collector implementation.
+
+ :return: ICollector implementation if available, None otherwise.
+ """
+ return self._metrics_loader.get_class()()
+
+ def get_collector_class(self):
+ """Returns type of currently configured collector implementation.
+
+ :return: Type of ICollector implementation if available.
+ None otherwise.
+ """
+ return self._metrics_loader.get_class()
+
+ def get_collectors(self):
+ """Returns dictionary of all available collectors.
+
+ :return: Dictionary of collectors.
+ - key: name of the class which implements ICollector,
+ - value: Type of traffic generator which implements ICollector.
+ """
+ return self._metrics_loader.get_classes()
+
+ def get_collectors_printable(self):
+ """Returns all available collectors in printable format.
+
+ :return: String containing printable list of collectors.
+ """
+ return self._metrics_loader.get_classes_printable()
+
+ def get_vswitch(self):
+ """Returns instance of currently configured vswitch implementation.
+
+ :return: IVSwitch implementation if available, None otherwise.
+ """
+ return self._vswitch_loader.get_class()()
+
+ def get_vswitch_class(self):
+ """Returns type of currently configured vswitch implementation.
+
+ :return: Type of IVSwitch implementation if available.
+ None otherwise.
+ """
+ return self._vswitch_loader.get_class()
+
+ def get_vswitches(self):
+ """Returns dictionary of all available vswitches.
+
+ :return: Dictionary of vswitches.
+ - key: name of the class which implements IVSwitch,
+ - value: Type of traffic generator which implements IVSwitch.
+ """
+ return self._vswitch_loader.get_classes()
+
+ def get_vswitches_printable(self):
+ """Returns all available vswitches in printable format.
+
+ :return: String containing printable list of vswitches.
+ """
+ return self._vswitch_loader.get_classes_printable()
+
+ def get_vnf_class(self):
+ """Returns a new instance of the configured VNF
+
+ Currently always returns None
+ """
+ #TODO: Load the VNF class
+ return None