cDelayer – Docs for ESB 5.x

cDelayer

1. From the Messaging folder of the
   Palette, drop two cFile components onto the design workspace, one to read
   files from a local folder and the other to write the files to another local
   folder.

2. From the Processor folder of the
   Palette, drop two cProcessor components onto the design workspace, one next to
   the reading component to monitor messages read from the source file folder,
   and the other next to the writing component to monitor messages written to
   the target file folder.

3. From the Processor folder of the Palette, drop one cDelayer
   component onto the design workspace, between the message reading monitor
   component and the message writing component.

4. Connect the components using Row >
   Route connections.

5. Label the components to better identify their roles in the Route, as shown
   above.

1. Double-click the first cFile component,
   which is labelled Read, to open its
   Basic settings view in the Component tab.

   

2. In the Path field, enter or browse to the
   path to the source files, and leave the other parameters as they are.

3. Repeat these steps to define the target folder in property settings of the second
   cFile component, which is labelled
   Write.

4. Double-click the first cProcessor
   component, which is labelled Read_monitor, to open its Basics
   settings view in the Component tab.

   

5. In the Code area, customize the code to display the time
   each message is read from the source:

   Date date=new Date(); SimpleDateFormat formatter = new SimpleDateFormat("HH:mm:ss"); String s = formatter.format(date); System.out.println(" Message "+ exchange.getIn().getHeader("CamelFileName")+ " read at "+(s));

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   Date date=new Date(); SimpleDateFormat formatter = new SimpleDateFormat("HH:mm:ss"); String s = formatter.format(date); System.out.println(" Message "+ exchange.getIn().getHeader("CamelFileName")+ " read at "+(s));

6. Repeat these steps to configure the second cProcessor
   component, which is labelled Write_monitor, to display the time each message is written
   to the target:

   Date date=new Date(); SimpleDateFormat formatter = new SimpleDateFormat("HH:mm:ss"); String s = formatter.format(date); System.out.println("Message "+ exchange.getIn().getHeader("CamelFileName")+ " written at "+(s));

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   Date date=new Date(); SimpleDateFormat formatter = new SimpleDateFormat("HH:mm:ss"); String s = formatter.format(date); System.out.println("Message "+ exchange.getIn().getHeader("CamelFileName")+ " written at "+(s));

7. Double-click the cDelayer component,
   which is labelled Delay_timer, to open
   its Basic settings view in the Component tab.

   

8. In the Time to wait (in ms) field, enter
   the number of milliseconds by which you want to delay message delivery. Note
   that the value must be a positive integer.

   In this use case, we want each message to be delivered after a 20-second delay.

9. Press Ctrl+S to save your Route.

1. Click the Code tab at the
   bottom of the design workspace to have a look at the generated code.

   

   As shown in the code, a 20-second delay is implemented according to
   .delay(20000) in the message routing from the
   Read endpoint .to the Write
   endpoint.

2. Press F6 to execute the Route.

   RESULT: Each message read from the source folder is routed to the target folder after a
   20-second delay.