Introduction

The JS7 - Try / Catch Instruction is Finish Instruction can be used for the error handling in a workflow. If any job runs in the try block and failed due to any reason the catch block will execute otherwise it will skip the catch block. If the catch block will also fail then the Order will be considered as failed. The folder 04_ErrorHandling contains the example for the try-catch. The four workflows are available with the different use cases for the try-catch:Based on some condition that is checked with an If Instruction an order is put to the finished state by use of the Finish Instruction. By default finished orders automatically leave a workflow.

Workflow

The 04_ErrorHandling folder contains an example for error handling with the Finish Instruction.

The jdFinish workflow prematurely completes due to the Finish Instruction that is used in the workflow. The If Instruction used in this workflow includes the expression $return_value_job1 > 0 that implements a check of an order variable. If the value of the order variable evaluates to true then the order is finished and otherwise the order continues with the job nodes following the If InstructionThe jdFinish workflow will finish the Order used in the workflow.  As from the example If Instruction evaluates to true then the Finish Instruction is executed then the Order is assigned to the FINISHED state.

To execute the workflow in the folder  04_ErrorHandling folder please follow the below steps:

1. Click on the folder 04_ErrorHandling and expand jdFinish workflow.
   
   
   
   
2. To add an order to the Order in the workflow. Click on workflow click the action menu of the workflow and click on use Add Order button from the drop-down menu.
   
   
   
   
   
3. On clicking the When clicking Add Order. A  a popup window will appear. 
4. You can add the an Order ID or leave the Order Id ID value blank empty, it will take the then use a default Order Id to process the OrderID. Click on the Submit button to add the Order.
   
   
   
   
5. To check the status of the Order order click on the Workflow name with this new Order history panel will appear. name of the workflow. This will make the Order History panel appear.
   
   
   
   
6. From the Order history History panel , you can see the Order is verify that the order is successful and finished. Click on the Order ID to open the detail logs of executionsee log output created by jobs executed for this order.
   
   
   
   
7. A log view window will open and the Order order log will be displayed. The Order This log contains log output to stdout/stderr from all jobs executed by the Orderorder. 
8. You can download the log file by clicking the Download button from the upper right corner of the log view window. Also, you can expand and collapse the individual job output using the arrow button chevron icons from the left upper corner of the log view window.