The Python version of the Open Baton vnfm-sdk
Python version of the vnfm-sdk
This project contains a vnfm sdk for python projects.
This section covers the requirements that must be met by the python-vnfm-sdk in order to satisfy the demands for such a component:
- python 2.7 or 3.5
How to install the python-vfnm-sdk
The safer way to start is to use a virtual environment. Once activated, just run
pip install python-vnfm-sdk
How to use the python-vfnm-sdk
First step, let’s create a configuration file for the VNFManager under: /etc/openbaton/<type>/conf.ini (where type is the endpoint specified in the vnfd.json)
This file should be like this:
[vnfm] log_path=/var/log/openbaton/ broker_ip=localhost username=admin password=openbaton heartbeat=60 exchange=openbaton-exchange
name description log_path path where the logfile will be written broker_ip Ip of the rabbitmq broker used by the nfvo username username for the rabbitmq broker used by the nfvo password password for the rabbitmq broker used by the nfvo exchange exchange name used in the rabbitmq broker by the nfvo heartbeat heartbeat for the rabbitmq connection
After installing the sdk, you will be able to write a Vnfm that inherit the AbstractVnfm class in this way:
import json import logging.config from interfaces.AbstractVnfmABC import AbstractVnfm class PythonVnfm(AbstractVnfm): def upgradeSoftware(self): pass def updateSoftware(self): pass def terminate(self, vnf_record): log.info("Executing TERMINATE for VNFR: %s" % vnf_record.get("name")) return vnf_record def stopVNFCInstance(self, vnf_record, vnfc_instance): pass def stop(self, vnf_record): pass def startVNFCInstance(self, vnf_record, vnfc_instance): pass def start(self, vnf_record): log.info("Executing start for VNFR: %s" % vnf_record.get("name")) return vnf_record def scale(self, scale_out, vnf_record, vnf_component, scripts, dependency): pass def query(self): pass def notifyChange(self): pass def modify(self, vnf_record, dependency): log.info("Executing modify for VNFR: %s" % vnf_record.get("name")) return vnf_record def instantiate(self, vnf_record, scripts, vim_instances): log.info("Executing instantiate for VNFR: %s" % vnf_record.get("name")) return vnf_record def heal(self, vnf_record, vnf_instance, cause): pass def handleError(self, vnf_record): log.info("Executing ERROR for VNFR: %s" % vnf_record.get("name")) return vnf_record def checkInstantiationFeasibility(self): pass
Then you must start it in this way, passing the type to the constructor
if __name__ == "__main__": logging.basicConfig(level="DEBUG") vnfm = PythonVnfm("python") vnfm.run()
This will register to the NFVO and start wait for the action addressed to the VNFM of type “python” in this example
Issues and bug reports should be posted to the GitHub Issue Tracker of this project
What is Open Baton?
OpenBaton is an open source project providing a comprehensive implementation of the ETSI Management and Orchestration (MANO) specification.
Open Baton is a ETSI NFV MANO compliant framework. Open Baton was part of the OpenSDNCore (www.opensdncore.org) project started almost three years ago by Fraunhofer FOKUS with the objective of providing a compliant implementation of the ETSI NFV specification.
Open Baton is easily extensible. It integrates with OpenStack, and provides a plugin mechanism for supporting additional VIM types. It supports Network Service management either using a generic VNFM or interoperating with VNF-specific VNFM. It uses different mechanisms (REST or PUB/SUB) for interoperating with the VNFMs. It integrates with additional components for the runtime management of a Network Service. For instance, it provides autoscaling and fault management based on monitoring information coming from the the monitoring system available at the NFVI level.
Source Code and documentation
Licensing and distribution
Copyright [2015-2016] Open Baton project
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
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.
The Open Baton project provides community support through the Open Baton Public Mailing List and through StackOverflow using the tags openbaton.
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