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*************
OVSDB library
*************
Path: ``ryu.lib.ovs``
Similar to the :doc:`library_ovsdb_manager`, this library enables your
application to speak the OVSDB protocol (RFC7047_), but differ from the
:doc:`library_ovsdb_manager`, this library will initiate connections from
controller side as ovs-vsctl_ command does.
Please make sure that your devices are listening on either the Unix domain
socket or TCP/SSL port before calling the APIs of this library.
.. code-block:: bash
# Show current configuration
$ ovs-vsctl get-manager
# Set TCP listen address
$ ovs-vsctl set-manager "ptcp:6640"
See manpage of ovs-vsctl_ command for more details.
.. _RFC7047: https://tools.ietf.org/html/rfc7047
.. _ovs-vsctl: http://openvswitch.org/support/dist-docs/ovs-vsctl.8.txt
Basic Usage
===========
1. Instantiate :py:mod:`ryu.lib.ovs.vsctl.VSCtl`.
2. Construct commands with :py:mod:`ryu.lib.ovs.vsctl.VSCtlCommand`.
The syntax is almost the same as ovs-vsctl_ command.
3. Execute commands via :py:mod:`ryu.lib.ovs.vsctl.VSCtl.run_command`.
Example
-------
.. code-block:: python
from ryu.lib.ovs import vsctl
OVSDB_ADDR = 'tcp:127.0.0.1:6640'
ovs_vsctl = vsctl.VSCtl(OVSDB_ADDR)
# Equivalent to
# $ ovs-vsctl show
command = vsctl.VSCtlCommand('show')
ovs_vsctl.run_command([command])
print(command)
# >>> VSCtlCommand(args=[],command='show',options=[],result='830d781f-c3c8-4b4f-837e-106e1b33d058\n ovs_version: "2.8.90"\n')
# Equivalent to
# $ ovs-vsctl list Port s1-eth1
command = vsctl.VSCtlCommand('list', ('Port', 's1-eth1'))
ovs_vsctl.run_command([command])
print(command)
# >>> VSCtlCommand(args=('Port', 's1-eth1'),command='list',options=[],result=[<ovs.db.idl.Row object at 0x7f525fb682e8>])
print(command.result[0].name)
# >>> s1-eth1
API Reference
=============
ryu.lib.ovs.vsctl
-----------------
.. automodule:: ryu.lib.ovs.vsctl
:members:
ryu.lib.ovs.bridge
------------------
.. automodule:: ryu.lib.ovs.bridge
:members:
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