Introduction

The JS7 - Try / Catch Instruction is  can be used for the error handling in a workflow. If any job runs in the within a Try Instruction block fails then the jobs available from the Catch Instruction block will be executed. If no error occurs in the Try Instruction block then the jobs in the Catch Instruction block are skipped. If a job in a Catch Instruction block also fails then the order will be considered being failed. Nested try/catch blocks can be used for more complex error handling.

Workflow

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 an example for error handling the try-/catch . The four workflows are available with the different use cases for the try-catch:blocks.

The jdFail workflow will execute and fail deliberately fails due to the fail operation JS7 - Fail Instruction that is used in the workflow. Even if all the jobs will execute successfully and the fail object is used at the end of the workflow the Order will fail and complete the workflowWhen the order is in a failed state then a user can resume execution of the order or can cancel the order.

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

1. Click on the folder 04_ErrorHandling and expand any of the workflows. Here I am using the jdFail 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 failed. 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.