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.. This work is licensed under a Creative Commons Attribution 4.0
International License. http://creativecommons.org/licenses/by/4.0
.. _nf_simulator:
:orphan:
NF Simulator
============
Description
-----------
An idea behind NF (Network Function) Simulator is to introduce simulator, which supports ORAN defined O1 interface (reporting of NF events to Service Management Orchestrators).
Within the use-case, it is expected, that an NF configuration change, happening due to multiple reasons (network mechanism triggered change - e.g. discovery of neighbours) is reported to the network management system, using ONAP`s VES REST events.
The simulator is expected to cover planned NF behaviour - receive the config change via a NetConf protocol and report that change (also potentially other related changes) to the network management system using ONAP`s VES event.
|image1|
**Figure 1. Architecture Overview**
NF Simulator code is stored in https://github.com/onap/integration-simulators-nf-simulator and all it's sub repos are:
* for VES Client - https://github.com/onap/integration-simulators-nf-simulator-ves-client
* for Netconf Server - https://github.com/onap/integration-simulators-nf-simulator-netconf-server
* for AVCN Manager - https://github.com/onap/integration-simulators-nf-simulator-avcn-manager
* for PM HTTPS Server - https://github.com/onap/integration-simulators-nf-simulator-pm-https-server
For above components have been prepared:
* docker images in ONAP Nexus:
* VES Client image - nexus3.onap.org:10001/onap/org.onap.integration.nfsimulator.vesclient
* AVCN Manager image - nexus3.onap.org:10001/onap/org.onap.integration.nfsimulator.avcnmanager
* PM HTTPS Server image - nexus3.onap.org:10001/onap/org.onap.integration.nfsimulator.pmhttpsserver
* Netconf Server images - nexus3.onap.org:10001/onap/org.onap.integration.nfsimulator.netconfserver
* example helm charts:
* `Helm charts <https://github.com/onap/integration-simulators-nf-simulator/tree/master/helm>`_
**VES Client, Netconf Server and PM HTTPS Server can be used and deployed separately depending on needs.**
Only AVCN Manger connects VES Client with Netconf Server in order to support O1 interface.
1. VES Client:
--------------
Application that generates VES events on demand.
**What does it do?**
* Supports both basic auth and TLS CMPv2 method of authentication.
* Allows to turn on and turn off hostname, verification in SSL.
* Allows to send one-time event and periodic events, based on event templates.
* Exposes API to manage VES Client
* Provides template mechanism (Template is a draft event. Merging event with patch will result in valid VES event.
Template itself should be a correct VES event as well as valid json object. )
* Patching - User is able to provide patch in request, which will be merged into template.
* Simulator supports corresponding keywords in templates: RandomInteger(start,end), RandomPrimitiveInteger(start,end), RandomInteger,
RandomString(length), RandomString, Timestamp, TimestampPrimitive, Increment
* In place variables support - Simulator supports dynamic keywords e.g. #dN to automatically substitute selected phrases in defined json schema.
* Logging - Every start of simulator will generate new logs that can be found in docker ves-client container.
* Swagger - Detailed view of simulator REST API is available via Swagger UI
* History - User is able to view events history.
2. Netconf Server:
------------------
This server uses sysrepo to simulate network configuration.
It is based on sysrepo-netopeer2 image.
**What does it do?**
Server allows to:
* install custom configuration models on start up.
* change configuration of that modules on runtime.
* use TLS custom certificates
* configure change subscription for particular YANG modules (Netconf server image run python application on the startup.)
* manage netconf server using REST interface, with endpoints:
* GET /healthcheck returns 200 "UP" if server is up and running
* POST /readiness return 200 "Ready" if server is ready, if not, returns 503 "Not Ready"
* POST /change_config/<path:module_name> changes configuration ad returns 202 "Accepted"
* GET /change_history returns 200 and change history as json
* GET /get_config/<path:module_name> returns 200 and current configuration
3. AVCN Manager:
----------------
Manager that fetches changes of configuration from kafka and sends them to VES client.
**What does it do?**
The manager processes notifications from NETCONF server. It does this by being a subscriber of a Kafka topic that is fed
with NETCONF notifications. Incoming notifications are then processed and output of this processing is sent to VES client.
4. PM HTTPS Server:
-------------------
Server that is used in Bulk PM usecases over HTTPS
**What does it do?**
* Supports TLS (CMPv2) method of authentication (used during connection to Data File Collector)
* Allows to use custom certificates
* Exposes REST API in order to manage PM files stored in HTTPS server
Guides
======
User And Developer Guide
------------------------
User guides:
- `VES Client user guide. <https://github.com/onap/integration-simulators-nf-simulator-ves-client/blob/master/README.md>`_
- `AVCN Manager user guide. <https://github.com/onap/integration-simulators-nf-simulator-avcn-manager/blob/master/README.md>`_
- `PM HTTPS Server user guide. <https://github.com/onap/integration-simulators-nf-simulator-pm-https-server/blob/master/README.md>`_
- `Netconf Server user guide. <https://github.com/onap/integration-simulators-nf-simulator-netconf-server/blob/master/README.md>`_
- `Netconf Notification Application user guide. <https://github.com/onap/integration-simulators-nf-simulator-netconf-server/blob/master/src/python/README.md>`_
- `NF Simulator CLI user guide <https://github.com/onap/integration-simulators-nf-simulator/blob/master/simulator-cli/README.md>`_
Jenkins builds:
* `VES Client jenkins builds <https://jenkins.onap.org/view/integration-simulators-nf-simulator-avcn-manager/>`_
* `AVCN Manager jenkins builds <https://jenkins.onap.org/view/integration-simulators-nf-simulator-netconf-server/>`_
* `PM HTTPS Server jenkins builds <https://jenkins.onap.org/view/integration-simulators-nf-simulator-pm-https-server/>`_
* `Netconf Server jenkins builds <https://jenkins.onap.org/view/integration-simulators-nf-simulator-ves-client/>`_
NF Simulator CSIT test cases:
* `Project integration-simulators-nf-simulator-netconf-server-master-verify-csit-testsuites <https://jenkins.onap.org/view/integration-simulators-nf-simulator-netconf-server/job/integration-simulators-nf-simulator-netconf-server-master-verify-csit-testsuites/>`_
* `Project integration-simulators-nf-simulator-netconf-server-master-csit-testsuites <https://jenkins.onap.org/view/integration-simulators-nf-simulator-netconf-server/job/integration-simulators-nf-simulator-netconf-server-master-csit-testsuites/>`_
NF Simulator sanity checks:
* https://github.com/onap/integration-simulators-nf-simulator/tree/master/sanitycheck
.. |image1| image:: ../files/simulators/NF-Simulator.png
:width: 10in
|
