How to setup VFS transport in WSO2 ESB with Samba

Environment: WS02 ESB 4.8.1, Samba 4.1.11, Ubuntu 14.10

Install Samba:

apt-get update
apt-get install samba

Configure two Samba shares:
/etc/samba/smb.conf

[SambaShareIn]
  path = /tmp/samba/in
  available = yes
  valid users = deep
  read only = no
  browseable = yes
  public = yes
  writable = yes
  guest ok = no

[SambaShareOut]
  path = /tmp/samba/out
  available = yes
  valid users = deep
  read only = no
  browseable = yes
  public = yes
  writable = yes
  guest ok = no

Set passwd for user deep:

smbpasswd -a deep

Enable VFS transport ( transport sender and listener ) in ESB:

$ESB_HOME/repository/conf/axis2/axis2.xml

<transportReceiver name="vfs" class="org.apache.synapse.transport.vfs.VFSTransportListener"/>

<transportSender name="vfs" class="org.apache.synapse.transport.vfs.VFSTransportSender"/>

Now you can create a VFS enabled ESB proxy:

<?xml version="1.0" encoding="UTF-8"?>
<proxy xmlns="http://ws.apache.org/ns/synapse"
       name="VFSSMB"
       transports="vfs"
       startOnLoad="true"
       trace="disable">
   <description/>
   <target>
      <endpoint>
         <address uri="http://localhost:9000/services/SimpleStockQuoteService"
                  format="soap12"/>
      </endpoint>
      <outSequence>
         <property name="transport.vfs.ReplyFileName"
                   expression="fn:concat(fn:substring-after(get-property('MessageID'), 'urn:uuid:'), '.xml')"
                   scope="transport"/>
         <property name="OUT_ONLY" value="true"/>
         <send>
            <endpoint>
               <address uri="vfs:smb://deep:deep@localhost/SambaShareOut/reply.xml"/>
            </endpoint>
         </send>
      </outSequence>
   </target>
   <parameter name="transport.PollInterval">5</parameter>
   <parameter name="transport.vfs.ActionAfterProcess">MOVE</parameter>
   <parameter name="transport.vfs.FileURI">vfs:smb://deep:deep@localhost/SambaShareIn</parameter>
   <parameter name="transport.vfs.MoveAfterProcess">vfs:smb://deep:deep@localhost/SambaShareOut</parameter>
   <parameter name="transport.vfs.MoveAfterFailure">vfs:smb://deep:deep@localhost/SambaShareOut</parameter>
   <parameter name="transport.vfs.FileNamePattern">.*\.xml</parameter>
   <parameter name="transport.vfs.ContentType">text/xml</parameter>
   <parameter name="transport.vfs.ActionAfterFailure">MOVE</parameter>
</proxy>

Now you can copy a SOAP message (test.xml) to location “smb://deep:deep@localhost/SambaShareIn” then ESB will poll for new files with extension “.xml” and send it to the give service. Response will by copy to the location “smb://deep:deep@localhost/SambaShareOut”

test.xml

<?xml version='1.0' encoding='UTF-8'?>
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:wsa="http://www.w3.org/2005/08/addressing">
    <soapenv:Body>
        <m0:getQuote xmlns:m0="http://services.samples">
            <m0:request>
                <m0:symbol>IBM</m0:symbol>
            </m0:request>
        </m0:getQuote>
    </soapenv:Body>
</soapenv:Envelope>