ovsdb

A libovsdb wrapper for operating Open vSwitch via Go.

This library is a fork of the ovsdbDriver functionality in contiv/ofnet and makes modifications for supporting Unix domain socket to connect OVSDB.

Install

$ go get -u github.com/John-Lin/ovsdb

Usage with ovsdb-server

You might need to create OVS bridge on given IP and TCP port, please make sure that you have set OVSDB listener.

$ ovs-vsctl set-manager ptcp:6640

Create bridge should assign IP and TCP port.

ovsDriver = ovsdb.NewOvsDriver("ovsbr", "127.0.0.1", 6640)

Otherwise, ovsdb-server connects to the Unix domain server socket and the default path is unix:/var/run/openvswitch/db.sock .

ovsDriver = ovsdb.NewOvsDriverWithUnix("br0")

Example

package main

import "github.com/John-Lin/ovsdb"

var ovsDriver *ovsdb.OvsDriver

func main() {
    // Create an OVS bridge to the Unix domain server socket.
    ovsDriver = ovsdb.NewOvsDriverWithUnix("br0")

    // Create an OVS bridge to the given IP and TCP port.
    // ovsDriver = ovsdb.NewOvsDriver("br0", "127.0.0.1", 6640)

    // Add br0 as a internal port without vlan tag (0)
    ovsDriver.CreatePort("br0", "internal", 0)
}

Use ovs-vsctl show to check bridge information.

root@dev:~# ovs-vsctl show
82040598-7050-4320-b946-1d4380fabc73
    Bridge "br0"
        Port "br0"
            Interface "br0"
                type: internal
    ovs_version: "2.5.2"

Related

• libovsdb is an OVSDB library which is originally developed by SocketPlane.
• contiv/ofnet is openflow networking library.