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-.. This work is licensed under a Creative Commons Attribution 4.0 International License.
-.. http://creativecommons.org/licenses/by/4.0
-
-.. _apex-PCVSExample:
-
-Policy-controlled Video Streaming (pcvs) with APEX
-**************************************************
-
-.. contents::
- :depth: 3
-
-Introduction
-^^^^^^^^^^^^
-
- .. container:: sectionbody
-
- .. container:: paragraph
-
- This module contains several demos for
- Policy-controlled Video Streaming (PCVS). Each demo
- defines a policy using AVRO and Javascript (or other
- scripting languages for the policy logic). To run the
- demo, a vanilla Ubuntu server with some extra software packages is required:
-
- .. container:: ulist
-
- - Mininet as network simulator
-
- - Floodlight as SDN controller
-
- - Kafka as messaging system
-
- - Zookeeper for Kafka configuration
-
- - APEX for policy control
-
-Install Ubuntu Server and SW
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
- .. container:: sect1
-
- .. rubric:: Install Demo
- :name: install_demo
-
- .. container:: sectionbody
-
- .. container:: paragraph
-
- Requirements:
-
- .. container:: ulist
-
- - Ubuntu server: 1.4 GB
-
- - Ubuntu with Xubuntu Desktop, git, Firefox: 2.3 GB
-
- - Ubuntu with all, system updated: 3 GB
-
- - With ZK, Kafka, VLC, Mininet, Floodlight, Python:
- 4.4 GB
-
- - APEX Build (M2 and built): M2 ~ 2 GB, APEX ~3.5 GB
-
- - APEX install (not build locally): ~ 300 MB
-
- .. container:: paragraph
-
- On a Ubuntu OS (install a stable or LTS server first)
-
- .. container:: listingblock
-
- .. container:: content
-
- ::
-
- # pre for Ubuntu, tools and X
- sudo apt-get -y install --no-install-recommends software-properties-common
- sudo apt-get -y install --no-install-recommends build-essential
- sudo apt-get -y install --no-install-recommends git
- sudo aptitude -y install --no-install-recommends xubuntu-desktop
- sudo apt-get -y install --no-install-recommends firefox
-
-
- # install Java
- sudo add-apt-repository ppa:webupd8team/java
- sudo apt-get update
- sudo apt-get -y install --no-install-recommends oracle-java8-installer
- java -version
-
-
- # reboot system, run system update, then continue
-
- # if VBox additions are needed, install and reboot
- sudo (cd /usr/local/share; wget https://www.virtualbox.org/download/testcase/VBoxGuestAdditions_5.2.7-120528.iso)
- sudo mount /usr/local/share/VBoxGuestAdditions_5.2.7-120528.iso /media/cdrom
- sudo (cd /media/cdrom;VBoxLinuxAdditions.run)
-
-
- # update apt-get DB
- sudo apt-get update
-
- # if APEX is build from source, install maven and rpm
- sudo apt-get install maven rpm
-
- # install ZooKeeper
- sudo apt-get install zookeeperd
-
- # install Kafka
- (cd /tmp;wget http://ftp.heanet.ie/mirrors/www.apache.org/dist/kafka/1.0.0/kafka_2.12-1.0.0.tgz --show-progress)
- sudo mkdir /opt/Kafka
- sudo tar -xvf /tmp/kafka_2.12-1.0.0.tgz -C /opt/Kafka/
-
- # install mininet
- cd /usr/local/src
- sudo git clone https://github.com/mininet/mininet.git
- (cd mininet;util/install.sh -a)
-
- # install floodlight, requires ant
- sudo apt-get install ant
- cd /usr/local/src
- sudo wget --no-check-certificate https://github.com/floodlight/floodlight/archive/master.zip
- sudo unzip master.zip
- cd floodlight-master
- sudo ant
- sudo mkdir /var/lib/floodlight
- sudo chmod 777 /var/lib/floodlight
-
- # install python pip
- sudo apt-get install python-pip
-
- # install kafka-python (need newer version from github)
- cd /usr/local/src
- sudo git clone https://github.com/dpkp/kafka-python
- sudo pip install ./kafka-python
-
- # install vlc
- sudo apt-get install vlc
-
- .. container:: paragraph
-
- Install APEX either from source or from a distribution
- package. See the APEX documentation for details. We
- assume that APEX is installed in
- ``/opt/ericsson/apex/apex``
-
- .. container:: paragraph
-
- Copy the LinkMonitor file to Kafka-Python
-
- .. container:: listingblock
-
- .. container:: content
-
- ::
-
- sudo cp /opt/ericsson/apex/apex/examples/scripts/pcvs/vpnsla/LinkMonitor.py /usr/local/src/kafka-python
-
- .. container:: paragraph
-
- Change the Logback configuration in APEX to logic
- logging
-
- .. container:: listingblock
-
- .. container:: content
-
- ::
-
- (cd /opt/ericsson/apex/apex/etc; sudo cp logback-logic.xml logback.xml)
-
- .. container:: sect1
-
- .. rubric:: Get the Demo Video
- :name: get_the_demo_video
-
- .. container:: sectionbody
-
- .. container:: ulist
-
- - For all download options of the movie please visit
- http://bbb3d.renderfarming.net/download.html
-
- - For lower-res downloads and mirrors see
- https://peach.blender.org/download
-
- .. container:: listingblock
-
- .. container:: content
-
- ::
-
- sudo mkdir /usr/local/src/videos
-
- .. container:: paragraph
-
- Standard 720p (recommended)
-
- .. container:: listingblock
-
- .. container:: content
-
- ::
-
- (cd /usr/local/src/videos; sudo curl -o big_buck_bunny_480p_surround.avi http://download.blender.org/peach/bigbuckbunny_movies/big_buck_bunny_480p_surround-fix.avi)
-
- .. container:: paragraph
-
- Full HD video
-
- .. container:: listingblock
-
- .. container:: content
-
- ::
-
- (cd videos; sudo curl -o bbb_sunflower_1080p_60fps_normal.mp4 http://distribution.bbb3d.renderfarming.net/video/mp4/bbb_sunflower_1080p_60fps_normal.mp4)
-
-
-
-VPN SLA Demo
-^^^^^^^^^^^^
-
- .. container:: sect1
-
- .. container:: sectionbody
-
- .. container:: paragraph
-
- This demo uses a network with several central office
- and core switches, over which two VPNs are run. A
- customer ``A`` has two location ``A1`` and ``A2`` and
- a VPN between them. A customer ``B`` has two location
- ``B1`` and ``B2`` and a VPN between them.
-
- .. container:: imageblock
-
- .. container:: content
-
- |VPN SLA Architecture|
-
- .. container:: paragraph
-
- The architecture above shows the scenario. The
- components are realized in this demo as follows:
-
- .. container:: ulist
-
- - *CEP / Analytics* - a simple Python script taking
- events from Kafka and sending them to APEX
-
- - *APEX / Policy* - the APEX engine running the VPA
- SLA policy
-
- - *Controller* - A vanilla Floodlight controller
- taking events from the Link Monitor and configuring
- Mininet
-
- - *Network* - A network created using Mininet
-
- .. container:: paragraph
-
- The demo requires to start some software (detailed
- below). To show actual video streams, we use ``VLC``.
- If you do not want to show video streams, but only the
- policy, skip the ``VLC`` section.
-
- .. container:: paragraph
-
- All shown scripts are available in a full APEX
- installation in
- ``$APEX_HOME/examples/scripts/pcvs/vpnsla``.
-
- .. container:: sect2
-
- .. rubric:: Start all Software
- :name: start_all_software
-
- .. container:: paragraph
-
- Create environment variables in a file, say
- ``env.sh``. In each new Xterm
-
- .. container:: ulist
-
- - Source these environment settings, e.g.
- ``. ./env.sh``
-
- - Run the commands below as root (``sudo`` per
- command or ``sudo -i`` for interactive mode as
- shown below)
-
- .. container:: listingblock
-
- .. container:: content
-
- ::
-
- #!/usr/bin/env bash
-
- export src_dir=/usr/local/src
- export APEX_HOME=/opt/ericsson/apex/apex
- export APEX_USER=apexuser
-
- .. container:: paragraph
-
- In a new Xterm, start Floodlight
-
- .. container:: listingblock
-
- .. container:: content
-
- ::
-
- sudo -i
- . ./env.sh
- cd $src_dir/floodlight-master && java -jar target/floodlight.jar
-
- .. container:: paragraph
-
- In a new Xterm start Mininet
-
- .. container:: listingblock
-
- .. container:: content
-
- ::
-
- sudo -i
- . ./env.sh
- mn -c && python $APEX_HOME/examples/scripts/pcvs/vpnsla/MininetTopology.py
-
- .. container:: paragraph
-
- In a new Xterm, start Kafka
-
- .. container:: listingblock
-
- .. container:: content
-
- ::
-
- sudo -i
- . ./env.sh
- /opt/Kafka/kafka_2.12-1.0.0/bin/kafka-server-start.sh /opt/Kafka/kafka_2.12-1.0.0/config/server.properties
-
- .. container:: paragraph
-
- In a new Xerm start APEX with the Kafka
- configuration for this demo
-
- .. container:: listingblock
-
- .. container:: content
-
- ::
-
- cd $APEX_HOME
- ./bin/apexApps.sh engine -c examples/config/pcvs/vpnsla/kafka2kafka.json
-
- .. container:: paragraph
-
- In a new Xterm start the Link Monitor. The Link
- Monitor has a 30 second sleep to slow down the
- demonstration. So the first action of it comes 30
- seconds after start. Every new action in 30 second
- intervals.
-
- .. container:: listingblock
-
- .. container:: content
-
- ::
-
- sudo -i
- . ./env.sh
- cd $src_dir
- xterm -hold -e 'python3 $src_dir/kafka-python/LinkMonitor.py' &
-
- .. container:: paragraph
-
- Now all software should be started and the demo is
- running. The Link Monitor will send link up events,
- picked up by APEX which triggers the policy. Since
- there is no problem, the policy will do nothing.
-
- .. container:: sect2
-
- .. rubric:: Create 2 Video Streams with VLC
- :name: create_2_video_streams_with_vlc
-
- .. container:: paragraph
-
- In the Mininet console, type ``xterm A1 A2`` and
- ``xterm B1 B2`` to open terminals on these nodes.
-
- .. container:: paragraph
-
- ``A2`` and ``B2`` are the receiving nodes. In these
- terminals, run ``vlc-wrapper``. In each opened VLC
- window do
-
- .. container:: ulist
-
- - Click Media → Open Network Stream
-
- - Give the URL as ``rtp://@:5004``
-
- .. container:: paragraph
-
- ``A1`` and ``B1`` are the sending nodes (sending
- the video stream) In these terminals, run
- ``vlc-wrapper``. In each opened VLC window do
-
- .. container:: ulist
-
- - Click Media → Stream
-
- - Add the video (from ``/usr/local/src/videos``)
-
- - Click ``Stream``
-
- - Click ``Next``
-
- - Change the destination
- ``RTP / MPEG Transport Stream`` and click
- ``Add``
-
- - Change the address and type to ``10.0.0.2`` in
- ``A1`` and to ``10.0.0.4`` in ``B1``
-
- - Turn off ``Active Transcoding`` (this is
- important to minimize CPU load)
-
- - Click ``Next``
-
- - Click ``Stream``
-
- .. container:: paragraph
-
- The video should be streaming across the network
- from ``A1`` to ``A2`` and from ``B1`` to ``B2``. If
- the video streams a slow or interrupted the CPU
- load is too high. In these cases either try a
- better machine or use a different (lower quality)
- video stream.
-
- .. container:: sect2
-
- .. rubric:: Take out L09 and let the Policy do it’s
- Magic
- :name: take_out_l09_and_let_the_policy_do_it_s_magic
-
- .. container:: paragraph
-
- Now it is time to take out the link ``L09``. This
- will be picked up by the Link Monitor, which sends
- a new event (L09 DOWN) to the policy. The policy
- then will calculate which customer should be
- impeded (throttled). This will continue, until SLAs
- are violated, then a priority calculation will kick
- in (Customer ``A`` is prioritized in the setup).
-
- .. container:: paragraph
-
- To initiate this, simply type ``link s5 s6 down``
- in the Mininet console followed by ``exit``.
-
- .. container:: paragraph
-
- If you have the video streams running, you will see
- one or the other struggeling, depending on the
- policy decision.
-
- .. container:: sect2
-
- .. rubric:: Reset the Demo
- :name: reset_the_demo
-
- .. container:: paragraph
-
- If you want to reset the demo, simple stop (in this
- order) the following process
-
- .. container:: ulist
-
- - Link Monitor
-
- - APEX
-
- - Mininet
-
- - Floodlight
-
- .. container:: paragraph
-
- Then restart them in this order
-
- .. container:: ulist
-
- - Floodlight
-
- - Mininet
-
- - APEX
-
- - Link Monitor
-
- .. container:: sect2
-
- .. rubric:: Monitor the Demo
- :name: monitor_the_demo
-
- .. container:: paragraph
-
- Floodlight and APEX provide REST interfaces for
- monitoring.
-
- .. container:: ulist
-
- - Floodlight: see `Floodlight
- Docs <https://floodlight.atlassian.net/wiki/spaces/floodlightcontroller/pages/40403023/Web+GUI>`__
- for details on how to access the monitoring. In
- a standard installation as we use here, pointing
- browser to the URL
- ``http://localhost:8080/ui/pages/index.html``
- should work on the same host
-
-VPN SLA Policy
-^^^^^^^^^^^^^^
-
- .. container:: sectionbody
-
- .. container:: paragraph
-
- The VPN SLA policy is designed as a MEDA policy. The
- first state (M = Match) takes the trigger event (a
- link up or down) and checks if this is a change to the
- known topology. The second state (E = Establish) takes
- all available information (trigger event, local
- context) and defines what situation we have. The third
- state (D = Decide) takes the situation and selects
- which algorithm is best to process it. This state can
- select between ``none`` (nothing to do), ``solved`` (a
- problem is solved now), ``sla`` (compare the current
- customer SLA situation and select one to impede), and
- ``priority`` (impede non-priority customers). The
- fourth and final state (A = Act) selects the right
- action for the taken decision and creates the response
- event sent to the orchestrator.
-
- .. container:: paragraph
-
- We have added three more policies to set the local
- context: one for adding nodes, one for adding edges
- (links), and one for adding customers. These policies
- do not realize any action, they are only here for
- updating the local context. This mechanism is the
- fasted way to update local context, and it is
- independent of any context plugin.
-
- .. container:: paragraph
-
- The policy uses data defined in Avro, so we have a
- number of Avro schema definitions.
-
-Context Schemas
----------------
-
- .. container:: sect1
-
- .. container:: sectionbody
-
- .. container:: paragraph
-
- The context schemas are for the local context. We
- model edges and nodes for the topology, customers, and
- problems with all information on detected problems.
-
- .. container:: ulist
-
- - |avroSchemaEdges_link|
- - |avroSchemaNodes_link|
- - |avroSchemaCustomers_link|
-
-
-Trigger Schemas
----------------
-
- .. container:: sect1
-
- .. container:: sectionbody
-
- .. container:: paragraph
-
- The trigger event provides a status as ``UP`` or
- ``DOWN``. To avoid tests for these strings in the
- logic, we defined an Avro schema for an enumeration (|avroSchemaLinkStatus_link|).
- This does not impact the trigger system (it can still
- send the strings), but makes the task logic simpler.
-
-
-
-Context Logic Nodes
--------------------
-
- .. container:: sect1
-
- .. container:: sectionbody
-
- .. container:: paragraph
-
- The node context logic simply takes the trigger event
- (for context) and creates a new node in the local
- context topology (|cntxtNodes_link|).
-
-Context Logic Edges
--------------------
-
- .. container:: sect1
-
- .. container:: sectionbody
-
- .. container:: paragraph
-
- The edge context logic simply takes the trigger event
- (for context) and creates a new edge in the local
- context topology (|cntxtEdges_link|).
-
-
-Context Logic Customer
-----------------------
-
- .. container:: sect1
-
- .. container:: sectionbody
-
- .. container:: paragraph
-
- The customer context logic simply takes the trigger
- event (for context) and creates a new customer in the
- local context topology (|cntxtCustomer_link|).
-
-
-Logic: Match
-------------
-
- .. container:: sect1
-
- .. container:: sectionbody
-
- .. container:: paragraph
-
- This is the logic for the match state. It is kept very
- simple. Beside taking the trigger event, it also
- creates a timestamp. This timestamp is later used for
- SLA and downtime calculations as well as for some
- performance information of the policy .
- Sample |taskMatch_link|
-
-
-Logic: Policy Establish State
------------------------------
-
- .. container:: sect1
-
- .. container:: sectionbody
-
- .. container:: paragraph
-
- This is the logic for the establish state. It is the
- most complicated logic, since establishing a situation
- for a decision is the most important part of any
- policy. First, the policy describes what we find (the
- switch block), in terms of 8 normal situations and 1
- extreme error case.
-
- .. container:: paragraph
-
- If required, it creates local context information for
- the problem (if it is new) or updates it (if the
- problem still exists). It also calculates customer SLA
- downtime and checks for any SLA violations. Finally,
- it creates a situation object.
- Sample |taskEstablish_link|
-
-Logic: Policy Decide State
---------------------------
-
- .. container:: sect1
-
- .. container:: sectionbody
-
- .. container:: paragraph
-
- The decide state can select between different
- algorithms depending on the situation. So it needs a
- Task Selection Logic (TSL). This TSL select a task in
- the current policy execution (i.e. potentially a
- different one per execution).
- Sample |tslDecide_Link|
-
- .. container:: paragraph
-
- The actual task logic are then ``none``, ``solved``,
- ``sla``, and ``priority``.
- Sample task logic are as given below :
-
- .. container:: ulist
-
- - |taskDecideNone_link|
- - |taskDecideSolved_Link|
- - |taskDecideSla_link|
- - |taskDecidePriority_Link|
-
-
-Logic: Policy Act State
------------------------
-
- .. container:: sect1
-
- .. container:: sectionbody
-
- .. container:: paragraph
-
- This is the logic for the act state. It is simply
- selecting an action, and creating the repsonse event
- for the orchestrator (the output of the policy).
- Sample |taskAct_link|
-
-CLI Spec
---------
-
- .. container:: sect1
-
- .. rubric:: Complete Policy Definition
- :name: complete_policy_definition
-
- .. container:: sectionbody
-
- .. container:: paragraph
-
- The complete policy definition is realized using the
- APEX CLI Editor. The script below shows the actual
- policy specification. All logic and schemas are
- included (as macro file).
- Sample |vpnsla-apex_link|
-
-
-Context Events Nodes
---------------------
-
- .. container:: sect1
-
- .. container:: sectionbody
-
- .. container:: paragraph
-
- The following events create all nodes of the topology.
-
- .. container:: ulist
-
- - |ctxtNodesJson_link|
-
-
-Context Events Edges
---------------------
-
- .. container:: sect1
-
- .. container:: sectionbody
-
- .. container:: paragraph
-
- The following events create all edges of the topology.
-
- .. container:: ulist
-
- - |ctxtEdgesJson_link|
-
-
-Context Events Customers
-------------------------
-
- .. container:: sect1
-
- .. container:: sectionbody
-
- .. container:: paragraph
-
- The following events create all customers of the topology.
-
- .. container:: ulist
-
- - |ctxtCustomerJson_link|
-
-
-Trigger Examples
-----------------
-
- .. container:: sect1
-
- .. container:: sectionbody
-
- .. container:: paragraph
-
- The following events are examples for trigger events
-
- .. container:: ulist
-
- - |triggerEdgeJson_link|
-
-Link Monitor
-------------
-
- .. container:: sect1
-
- .. container:: sectionbody
-
- .. container:: paragraph
-
- The Link Monitor is a Python script. At startup, it
- sends the context events to APEX to initialize the
- topology and the customers. Then it takes events from
- Kafka and sends them to APEX.
- Sample |linkMonitor_link|
-
-Mininet Topology
-----------------
-
- .. container:: sect1
-
- .. container:: sectionbody
-
- .. container:: paragraph
-
- The topology is realized using Mininet. This
- script is used to establish the topology and to realize
- network configurations.
- Sample |mininetTopology_link|
-
-
- .. container::
- :name: footer-text
-
- 2.3.0-SNAPSHOT
- Last updated 2020-04-03 16:04:24 IST
-
-
-.. |VPN SLA Architecture| image:: images/pcvs/vpnsla-arch.png
-
-.. |avroSchemaEdges_link| raw:: html
-
- <a href="https://github.com/onap/policy-apex-pdp/tree/master/examples/examples-pcvs/src/main/resources/org/onap/policy/apex/examples/pcvs/vpnsla/avro/topology-edges.avsc" target="_blank">AVRO Schema Edges</a>
-.. |avroSchemaNodes_link| raw:: html
-
- <a href="https://github.com/onap/policy-apex-pdp/tree/master/examples/examples-pcvs/src//main/resources/org/onap/policy/apex/examples/pcvs/vpnsla/avro/topology-nodes.avsc" target="_blank">AVRO Schema Nodes</a>
-.. |avroSchemaCustomers_link| raw:: html
-
- <a href="https://github.com/onap/policy-apex-pdp/tree/master/examples/examples-pcvs/src/main/resources/org/onap/policy/apex/examples/pcvs/vpnsla/avro/customers.avsc" target="_blank">AVRO Schema Customers</a>
-.. |avroSchemaLinkStatus_link| raw:: html
-
- <a href="https://github.com/onap/policy-apex-pdp/tree/master/examples/examples-pcvs/src/main/resources/org/onap/policy/apex/examples/pcvs/vpnsla/avro/link-status.avsc" target="_blank">AVRO Schema Link Status</a>
-.. |cntxtNodes_link| raw:: html
-
- <a href="https://github.com/onap/policy-apex-pdp/tree/master/examples/examples-pcvs/src/main/resources/org/onap/policy/apex/examples/pcvs/vpnsla/logic/ctxt-nodes.js" target="_blank">Logic Node Context</a>
-.. |cntxtEdges_link| raw:: html
-
- <a href="https://github.com/onap/policy-apex-pdp/tree/master/examples/examples-pcvs/src/main/resources/org/onap/policy/apex/examples/pcvs/vpnsla/logic/ctxt-edges.js" target="_blank">Logic Edge Context</a>
-.. |cntxtCustomer_link| raw:: html
-
- <a href="https://github.com/onap/policy-apex-pdp/tree/master/examples/examples-pcvs/src/main/resources/org/onap/policy/apex/examples/pcvs/vpnsla/logic/ctxt-customer.js" target="_blank">Logic Customer Context</a>
-.. |taskMatch_link| raw:: html
-
- <a href="https://github.com/onap/policy-apex-pdp/tree/master/examples/examples-pcvs/src/main/resources/org/onap/policy/apex/examples/pcvs/vpnsla/logic/task-match.js" target="_blank">Logic Policy Match State</a>
-.. |taskEstablish_link| raw:: html
-
- <a href="https://github.com/onap/policy-apex-pdp/tree/master/examples/examples-pcvs/src/main/resources/org/onap/policy/apex/examples/pcvs/vpnsla/logic/task-establish.js" target="_blank">Logic Policy Establish State</a>
-.. |tslDecide_Link| raw:: html
-
- <a href="https://github.com/onap/policy-apex-pdp/tree/master/examples/examples-pcvs/src/main/resources/org/onap/policy/apex/examples/pcvs/vpnsla/logic/tsl-decide.js" target="_blank">JS Logic Policy Decide State - TSL</a>
-.. |taskDecideNone_link| raw:: html
-
- <a href="https://github.com/onap/policy-apex-pdp/tree/master/examples/examples-pcvs/src/main/resources/org/onap/policy/apex/examples/pcvs/vpnsla/logic/task-decide-none.js" target="_blank">Logic: Decide None</a>
-.. |taskDecideSolved_Link| raw:: html
-
- <a href="https://github.com/onap/policy-apex-pdp/tree/master/examples/examples-pcvs/src/main/resources/org/onap/policy/apex/examples/pcvs/vpnsla/logic/task-decide-solved.js" target="_blank">Logic: Decide Solved</a>
-.. |taskDecideSla_link| raw:: html
-
- <a href="https://github.com/onap/policy-apex-pdp/tree/master/examples/examples-pcvs/src/main/resources/org/onap/policy/apex/examples/pcvs/vpnsla/logic/task-decide-sla.js" target="_blank">Logic: Decide SLA</a>
-.. |taskDecidePriority_Link| raw:: html
-
- <a href="https://github.com/onap/policy-apex-pdp/tree/master/examples/examples-pcvs/src/main/resources/org/onap/policy/apex/examples/pcvs/vpnsla/logic/task-decide-priority.js" target="_blank">Logic: Decide Priority</a>
-.. |taskAct_link| raw:: html
-
- <a href="https://github.com/onap/policy-apex-pdp/tree/master/examples/examples-pcvs/src/main/resources/org/onap/policy/apex/examples/pcvs/vpnsla/logic/task-act.js" target="_blank">Logic Policy Act State</a>
-.. |vpnsla-apex_link| raw:: html
-
- <a href="https://github.com/onap/policy-apex-pdp/tree/master/examples/examples-pcvs/src/main/resources/org/onap/policy/apex/examples/pcvs/vpnsla/vpnsla.apex" target="_blank">APEX VPN SLA Policy Specification</a>
-.. |ctxtNodesJson_link| raw:: html
-
- <a href="https://github.com/onap/policy-apex-pdp/tree/master/examples/examples-pcvs/src/main/resources/examples/events/pcvs/vpnsla/CtxtNodes.json" target="_blank">Context Events Nodes</a>
-.. |ctxtEdgesJson_link| raw:: html
-
- <a href="https://github.com/onap/policy-apex-pdp/tree/master/examples/examples-pcvs/src/main/resources/examples/events/pcvs/vpnsla/CtxtEdges.json" target="_blank">Context Events Edges</a>
-.. |ctxtCustomerJson_link| raw:: html
-
- <a href="https://github.com/onap/policy-apex-pdp/tree/master/examples/examples-pcvs/src/main/resources/examples/events/pcvs/vpnsla/CtxtCustomers.json" target="_blank">Context Events Customers</a>
-.. |triggerEdgeJson_link| raw:: html
-
- <a href="https://github.com/onap/policy-apex-pdp/tree/master/examples/examples-pcvs/src/main/resources/examples/events/pcvs/vpnsla/Trigger_Edge09.json" target="_blank">Trigger Examples</a>
-.. |linkMonitor_link| raw:: html
-
- <a href="https://github.com/onap/policy-apex-pdp/tree/master/examples/examples-pcvs/src/main/resources/examples/scripts/pcvs/vpnsla/LinkMonitor.py" target="_blank">Link Monitor</a>
-.. |mininetTopology_link| raw:: html
-
- <a href="https://github.com/onap/policy-apex-pdp/tree/master/examples/examples-pcvs/src/main/resources/examples/scripts/pcvs/vpnsla/MininetTopology.py" target="_blank">Mininet Topology</a>
diff --git a/docs/apex/APEX-Policy-Examples.rst b/docs/apex/APEX-Policy-Examples.rst
index 8a9a7203..03ee84ba 100644
--- a/docs/apex/APEX-Policy-Examples.rst
+++ b/docs/apex/APEX-Policy-Examples.rst
@@ -10,7 +10,6 @@ Policy Examples
:maxdepth: 1
APEX-MyFirstPolicyExample.rst
- APEX-PCVS-Example.rst
APEX-DecisionMakerExample.rst
.. contents::
@@ -44,26 +43,6 @@ My First Policy
- :ref:`My-First-Policy Example <apex-myFirstExample>`
-VPN SLA
-^^^^^^^
-
- .. container:: paragraph
-
- The domain Policy-controlled Video Streaming (PCVS) contains
- a policy for controlling video streams with different
- strategies. It also provides details for installing an
- actual testbed with off-the-shelve software (Mininet,
- Floodlight, Kafka, Zookeeper). The policy model here
- demonstrates virtually all APEX features: local context and
- policies controlling it, task selection logic and multiple
- tasks in a single state, AVRO schemas for context, AVOR
- schemas for events (trigger and local), and a CLI editor
- specification of the policy. The documentation can be found:
-
- .. container:: ulist
-
- - :ref:`VPN SLA Policy on the APEX site <apex-PCVSExample>`
-
Decision Maker
^^^^^^^^^^^^^^
diff --git a/docs/apex/images/pcvs/vpnsla-arch.png b/docs/apex/images/pcvs/vpnsla-arch.png
deleted file mode 100644
index 0aa39137..00000000
--- a/docs/apex/images/pcvs/vpnsla-arch.png
+++ /dev/null
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