.. BBSim documentation master file, created by
   sphinx-quickstart on Fri Oct 25 12:03:42 2019.
   You can adapt this file completely to your liking, but it should at least
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Welcome to BBSim's documentation!
=================================

.. toctree::
   :maxdepth: 2
   :caption: Contents:

   operations.rst
   onu-state-machine.rst
   development-dependencies.rst
   bbr.rst
   bbsimctl.rst
   api.rst


Quickstart
----------

BBSim (a.k.a. BroadBand Simulator) is a tool designed to emulate an `Openolt <https://github.com/opencord/openolt>`_
compatible device.

In order to use BBSim you need to have:

- a Kubernetes cluster
- helm
- a working installation of VOLTHA

We strongly recommend the utilization of `kind-voltha <https://github.com/ciena/kind-voltha>`_ to setup such environment.

Installation
------------

Once VOLTHA is up and running, you can deploy BBSim with this command:

.. code:: bash

    helm install -n bbsim cord/bbsim

If you need to specify a custom image for BBSim you can:

.. code:: bash

    helm install -n bbsim cord/bbsim --set images.bbsim.repository=bbsim --set images.bbsim.tag=candidate --set images.bbsim.pullPolicy=Never

The BBSim installation can be customized to emulate multiple ONUs and multiple PON Ports:

.. code:: bash

    helm install -n bbsim cord/bbsim --set onu=8 --set pon=2

BBSim can also be configured to automatically start Authentication or DHCP:

.. code:: bash

   helm install -n bbsim cord/bbsim --set auth=true --set dhcp=true

Once BBSim is installed you can verify that it's running with:

.. code:: bash

    kubectl logs -n voltha -f $(kubectl get pods -n voltha | grep bbsim | awk '{print $1}')

Provision a BBSim OLT in VOLTHA
-------------------------------

Create the device:

.. code:: bash

    voltctl device create -t openolt -H $(kubectl get -n voltha service/bbsim -o go-template='{{.spec.clusterIP}}'):50060

Enable the device:

.. code:: bash

    voltctl device enable $(voltctl device list --filter Type~openolt -q)

BBSim startup options
---------------------

``BBSim`` supports a series of options that can be set at startup, you can see the list via ``./bbsim --help``

.. code:: bash

   $ ./bbsim --help
   Usage of ./bbsim:
     -auth
           Set this flag if you want authentication to start automatically
     -c_tag int
           C-Tag starting value, each ONU will get a sequential one (targeting 1024 ONUs per BBSim instance the range is big enough) (default 900)
     -cpuprofile string
           write cpu profile to file
     -dhcp
           Set this flag if you want DHCP to start automatically
     -logCaller
           Whether to print the caller filename or not
     -logLevel string
           Set the log level (trace, debug, info, warn, error) (default "debug")
     -nni int
           Number of NNI ports per OLT device to be emulated (default 1)
     -olt_id int
           Number of OLT devices to be emulated
     -onu int
           Number of ONU devices per PON port to be emulated (default 1)
     -pon int
           Number of PON ports per OLT device to be emulated (default 1)
     -s_tag int
           S-Tag value (default 900)