WSO2 ESB - Using File Inbound endpoint

With WSO2 ESB 4.9.0 you can use different Inbound endpoints. ESB has 3 types of inbound endpoints;

• Listening Inbound Endpoints
• Polling Inbound Endpoints
• Event-Based Inbound Endpoints

In this blog post I'll explain how to create a file inbound endpoint.
File Inbound endpoint falls under Polling Inbound Endpoints. 

1. Start ESB server.
2. Go to Inbound Endpoints.
3. Provide a name and select type as File. Click next.
   
4. Provide and save the details here.

Sequence is the name of the sequence which should be called once a file is read from the location specified in transport.vfs. FileURI. You can read more on vfs parameters from [1]

Sample inbound endpoint configuration looks like follows,

<?xml version="1.0" encoding="UTF-8"?>

<inboundEndpoint xmlns="http://ws.apache.org/ns/synapse"

name="vfsEndpoint"

sequence="inboundtest"

onError="fault"

protocol="file"

suspend="false">

<parameters>

<parameter name="interval">60</parameter>

<parameter name="transport.vfs.ActionAfterErrors">NONE</parameter>

<parameter name="coordination">true</parameter>

<parameter name="transport.vfs.ContentType">application/xml</parameter>

<parameter name="transport.vfs.LockReleaseSameNode">false</parameter>

<parameter name="transport.vfs.AutoLockRelease">true</parameter>

<parameter name="transport.vfs.ActionAfterFailure">MOVE</parameter>

<parameter name="transport.vfs.AutoLockReleaseInterval">5000</parameter>

<parameter name="transport.vfs.CreateFolder">true</parameter>

<parameter name="sequential">true</parameter>

<parameter name="transport.vfs.ActionAfterProcess">MOVE</parameter>

<parameter name="transport.vfs.FileURI">file:///home/sachini/dev/inbooundtest</parameter>

<parameter name="transport.vfs.MoveAfterFailure">file:///home/sachini/dev/inbooundtest/error</parameter>

<parameter name="transport.vfs.DistributedLock">false</parameter>

<parameter name="transport.vfs.FileNamePattern">.*.xml</parameter>

<parameter name="transport.vfs.MoveAfterProcess">file:///home/sachini/dev/inbooundtest/out</parameter>

<parameter name="transport.vfs.Locking">enable</parameter>

<parameter name="transport.vfs.FileSortAscending">true</parameter>

<parameter name="transport.vfs.FileSortAttribute">NONE</parameter>

</parameters>

</inboundEndpoint>

Once you add the inbound endpoint and put a file (in this case a xml file) in the location specified in transport.vfs.FileURI. File will be read and the specified sequence will be called. 

[1]https://docs.wso2.com/display/ESB490/VFS+Transport#VFSTransport-URLparams