[jboss-dev-forums] [Design of JBoss ESB] - Original file name as message property for File/FTP gateways

[derek.adams]

I have some code that adds the originating filename as a property on messages coming from file or FTP gateways. In our business case, we needed to be able to take the original filename, modify it with a timestamp and use that as the filename on an outgoing FTP. Our solution was an action that executes a chain of strategies on the incoming filename, passing the end result to a NotifyFTP action. The config looks like this...


  | <jbossesb parameterReloadSecs="5" xmlns="http://anonsvn.labs.jboss.com/labs/jbossesb/trunk/product/etc/schemas/xml/jbossesb-1.0.1.xsd">
  |   <providers>
  |     <jms-provider name="JBossMQ" connection-factory="ConnectionFactory" jndi-URL="localhost">
  |       <jms-bus busid="MyESBChannel">
  |         <jms-message-filter dest-name="queue/A" dest-type="QUEUE"/>
  |       </jms-bus>
  |     </jms-provider>
  |     <fs-provider name="MyFileProvider">
  |       <fs-bus busid="MyFileBus">
  |         <fs-message-filter directory="/temp" input-suffix=".esbdat" work-suffix=".esbInProcess" post-delete="true" 
  |            post-directory="processed" post-suffix=".esbDone" error-delete="true" error-directory="processed" error-suffix=".esbERROR"/>
  |       </fs-bus>
  |     </fs-provider>
  |     <ftp-provider name="MyFtpProvider" hostname="localhost">
  |       <ftp-bus busid="MyFtpBus">
  |         <ftp-message-filter directory="/" username="anonymous" password="none" input-suffix=".esbdat" work-suffix=".esbInProcess" 
  |            post-delete="true" post-directory="processed" post-suffix=".esbDone" error-delete="true" error-directory="processed" 
  |            error-suffix=".esbERROR" passive="false" protocol="ftp"/>
  |       </ftp-bus>
  |     </ftp-provider>
  |   </providers>
  |   <services>
  |     <service category="FirstServiceESB" name="SimpleListener" description="Hello World">
  |       <listeners>
  |         <fs-listener name="InFromFile" busidref="MyFileBus" maxThreads="1" is-gateway="true" poll-frequency-seconds="3"/>
  |         <ftp-listener name="InFromFTP" busidref="MyFtpBus" maxThreads="1" is-gateway="true" poll-frequency-seconds="8"/>
  |         <jms-listener name="EsbListener" busidref="MyESBChannel" maxThreads="1" is-gateway="false"/>
  |       </listeners>
  |       <actions>
  |         <action name="BuildFilename" class="org.jboss.soa.esb.actions.naming.FileNameGeneratorAction">
  |           <property name="strategies" value="">
  |             <strategies>
  |               <strategy class="org.jboss.soa.esb.actions.naming.strategy.ChangeSuffixNamingStrategy" newSuffix="proc"/>
  |               <strategy class="org.jboss.soa.esb.actions.naming.strategy.AddTimestampNamingStrategy"/>
  |             </strategies>
  |           </property>
  |         </action>
  |         <action name="SendToFTP" class="org.jboss.soa.esb.actions.Notifier">
  |           <property name="okMethod" value="notifyOK"/>
  |           <property name="notification-details" value="">
  |             <NotificationList type="OK">
  |               <target class="NotifyFTP">
  |                 <ftp URL="ftp://user:password@server.com/home/user" filename="{org.jboss.soa.esb.naming.result}"/>
  |               </target>
  |             </NotificationList>
  |           </property>
  |         </action>
  |       </actions>
  |     </service>
  |   </services>
  | </jbossesb>

The FileNameGeneratorAction uses the message property for originating filename set in the gateway by default (can be changed via action props) and writes the result to a well-known message prop name. The NotifyFTP action picks up the result value and uses that as the filename it writes. 

I figure that this may be helpful to other people with similar requirements, so I was wondering if I should check the code in. Alternatively, I can add a JIRA and attach the updates so people can take a look before it goes in the trunk.

Thanks,
Derek

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