Activiti catch mail error

Activiti is a popular open-source workflow engine that allows you to model and execute business processes. When it comes to handling errors, including email errors, Activiti provides several mechanisms to catch and handle exceptions.

Here are some ways to catch mail errors in Activiti:

1. Error Handlers: Activiti provides a built-in error handler mechanism that allows you to catch and handle errors at different stages of the workflow execution. You can define an error handler for a specific task or process, and specify a custom error handler class that will be called when an error occurs.
2. Task Error Handlers: You can also define a task error handler for a specific task, which will be called when an error occurs while executing that task. This allows you to catch and handle errors specific to that task.
3. Process Error Handlers: Similarly, you can define a process error handler for a specific process, which will be called when an error occurs while executing that process.
4. Custom Error Handlers: You can also implement a custom error handler by creating a Java class that implements the org.activiti.engine.delegate.ErrorHandler interface. This allows you to catch and handle errors in a custom way.

To catch mail errors specifically, you can use the org.activiti.engine.delegate.MailException exception, which is thrown when an error occurs while sending an email using the Activiti mail service.

Here's an example of how you can catch a mail error in Activiti using an error handler:

public class MailErrorHandler implements ErrorHandler {
    @Override
    public void handleException(DelegateException exception) {
        if (exception instanceof MailException) {
            MailException mailException = (MailException) exception;
            // Handle the mail error here
            System.out.println("Mail error: " + mailException.getMessage());
        }
    }
}

In this example, the MailErrorHandler class implements the ErrorHandler interface and overrides the handleException method. This method checks if the exception is an instance of MailException, and if so, handles the error by printing a message to the console.

You can then register this error handler with Activiti using the processEngine.getManagementService().setErrorHandler method:

ProcessEngine processEngine =...;
processEngine.getManagementService().setErrorHandler(new MailErrorHandler());

By using one of these mechanisms, you can catch and handle mail errors in Activiti and ensure that your workflow execution is not interrupted by email-related errors.