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Using the File Inbound Endpoint¶

Failure tracking using File Inbound¶

To track failures in file processing that can occur when a resource becomes unavailable, the VFS transport creates and maintains a failed records file. This text file contains a list of files that failed to processed. When a failure occurs, an entry with the failed file name and timestamp is logged in the text file. When the next polling iteration occurs, the VFS transport checks each file against the failed records file, and if a file is listed as a failed record, it will skip processing and schedule a move task to move that file.

Synapse configuration¶

Following are the integration artifacts that we can used to implement this scenario. See the instructions on how to build and run this example.

Inbound Endpoint

<?xml version="1.0" encoding="UTF-8"?>
<inboundEndpoint xmlns="http://ws.apache.org/ns/synapse" 
                 name="file" sequence="request" 
                 onError="fault" 
                 protocol="file" 
                 suspend="false">
   <parameters>
      <parameter name="interval">1000</parameter>
      <parameter name="sequential">true</parameter> 
      <parameter name="coordination">true</parameter> 
      <parameter name="transport.vfs.ActionAfterProcess">MOVE</parameter>
      <parameter name="transport.vfs.MoveAfterProcess">file:///home/user/test/out</parameter>
      <parameter name="transport.vfs.FileURI">file:///home/user/test/in</parameter>
      <parameter name="transport.vfs.MoveAfterFailure">file:///home/user/test/failed</parameter>
      <parameter name="transport.vfs.FileNamePattern">.*.xml</parameter>
      <parameter name="transport.vfs.ContentType">text/xml</parameter>
      <parameter name="transport.vfs.ActionAfterFailure">MOVE</parameter>
   </parameters>
</inboundEndpoint>

Sequence

<?xml version="1.0" encoding="UTF-8"?>
<sequence xmlns="http://ws.apache.org/ns/synapse" name="request">
    <log level="full"/>
</sequence>

Build and run¶

Create the artifacts:

Set up ESB Integration Studio.
Create an integration project with an ESB Configs module and an Composite Exporter.
Create a mediation sequence and inbound endpoint with configurations given in the above example.
Deploy the artifacts in your Micro Integrator.

To invoke the inbound endpoint, you can create a file with the below content and save it as request.xml in the /home/user/test/in directory.

<?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>

Once the file is created, the inbound endpoint's sequence (request) is triggered and the following content is logged:

To: , MessageID: urn:uuid:CA46833F184F7EAA0E1585819580883, Direction: request, Envelope: <?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>

Configuring FTP, SFTP, and FILE Connections¶

The following section describes how to configure the file inbound protocol for FTP, SFTP, and FILE connections.

To configure the file inbound protocol for FTP connections, you should specify the URL as ftp://{username}:{password}@{hostname/ip_address}/{source_filepath}:
```
ftp://admin:pass@localhost/orders
```
To configure the file inbound protocol for SFTP connections, you should specify the URL as sftp://{username}:{password}@{hostname/ip_address}/{source_filepath}:
```
sftp://admin:pass@localhost/orders
```

Tip

If the password contains special characters, these characters will need to be replaced with their hexadecimal representation.

To configure the file inbound protocol for FILE connections, you should specify the URL as file://{local_file_system_path}:
```
file:///home/user/test/in
```

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