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.. This work is licensed under a Creative Commons Attribution 4.0 International License.
.. http://creativecommons.org/licenses/by/4.0
=========================================
OPNFV Parser Danube Overview Doumentation
=========================================
.. contents::
:depth: 3
:local:
Introduction
---------------
In NFV, various templates (such as descriptors, records and so on) are utilized
to describe the deployment requirements (such as basic VM requirements – vCPU,
memory, storage, as well as the NFV acceleration management requirement such as
Huge Pages support, SR-IOV, NUMA affinity, DPDK support etc.),
the post-instaniation records (such as storage usage report, CPU performance
report etc.) or other purposes. However in order to make these templates
adaptable and feasible for purpose like deployment orchestration/automation,
certain tooling mechanism that provides template translation is necessary.
Project Parser will help to provide such tooling mechanism, by parsing Telecom
operators’ descriptors/records into TOSCA/CAMP templates and then further
translate TOSCA/CAMP templates into certain common templates, which could be
used in IaaS orchestration projects like OpenStack Heat.
For Arno Release
------------------------
Parser is not one of the Arno Release projects, however the project has established
the code base for the later releases:
* OpenStack Heat Translator Kilo Release
* Initial documentation on use cases
Upgrades from Arno Release
------------------------
For Brahmaputra Release, Parser offers the following additional capabilities:
* Update with the integration of OpenStack Heat-Translator Liberty Release, of which
both heat in-tree code and standalone package are provided.
* New module yang2tosca module which offers the capability to translate yang based
scriptors to tosca formate templates. Users could further use Heat-translator
module to translate this tosca template to Heat Orchestration template.
Yang2Tosca module could be installed seperately after user installed
OPNFV B release platform.
* The "parser_new_keywords" document demonstrate a set of keywords concluded by
Parser team that need to be supported in tosca to heat translation. However
it should be noted that these keywords only serve as a roadmap. We will start
from Release C to indicate which specific set of keywords are supported in
Parser.
* The "vRNC_tosca_intro" document describes Parser's use case analysis on vRNC
scenario.The "example" folder contains examples of tosca-nfv standard and vRNC
scenario. See also https://wiki.opnfv.org/parser.
Upgrades from Brahmaputra Release
-----------------------
For Colorado Release, Parser offers the following additional capabilities:
* New module policy2tosca which enables policy related fields in tosca could be
translated into heat orchestration template correctly. Policy2Tosca module could
be installed seperately after user installed OPNFV C release platform.
* New module tosca2heat enhancements which includes a set of feature addons (such
as substitution mapping) for OpenStack tosca-parser module which is integrated in
the OPNFV C release platform. And the main details are listed below:
** support substitution mapping semantic in tosca-parser:
- support parse and validation about substitution mapping definition;
- support import nested template;
- support deployment a node which is substituted by a template;
- support deployment a template alone which has substitution mapping definition.
** afinity and anti-affinity support when deploy servers:
- tosca.policies.Placement.Colocate;
- tosca.policies.Placement.Antilocate;
** add validation about input parameters;
** add high availability and block volume in compute translation;
** add ip output in compute translation;
** add deployment a whole vRNC testcase with parser.
* Additional testing support.
Upgrades from Colorado Release
------------------------------
For Danube Release, Parser offers the following additional capabilities:
* New module verigraph which is a formal verification tool for service graphs. Given
a service graph, which can include stateful network functions and their configurations
(e.g., filtering rules for firewalls, and blacklists for anti-spamming filters), verigraph
can accurately and quickly check reachability properties in the graph (e.g. if a particular
flow of packets can go from one node of the graph to another node). Verigraph exploits
Satisfiability Modulo Theories (SMT) and the general-purpose SMT solver Z3. It includes a
library of network function models.
* The tosca2heat module updated with the intgeration of OpenStack tosca-parser and heat-translator
0.7.0 releases.
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