Write Line (Activity)


  • Purpose: To output a line of text to a console or designated logging output during workflow execution.

  • Functionality: When the "Write Line" activity is executed, it sends a text string to a console window, log file, or other designated output. This is primarily used to display information, track workflow progress, log events, and aid in debugging.

  • Use Cases:
    • Workflow Logging: Writing messages to a console or log to record workflow execution steps, timestamps, variable values, and other relevant information for auditing and troubleshooting.
    • Displaying Workflow Status: Providing visual feedback on the workflow's progress or current state, which can be helpful for monitoring long-running processes.
    • Debugging and Development: Outputting variable values or intermediate calculation results to the console to help developers understand workflow behavior and identify issues.
    • Simple User Feedback (Console-Based): In basic console-oriented workflows, "Write Line" can be used to display prompts or messages to a user interacting with the workflow.

How to Use Console Activities:

1. Drag and drop a Console activity ("Read Line" or "Write Line") from the Console section onto your workflow canvas.

2. Configure the properties of the activity.

  • For Write Line: Specify the text string you want to output in the activity's settings. This can be a fixed text message or a dynamic value from a workflow variable.
  • For Read Line: Configure where the input should be read from, if necessary for your workflow environment.

3. Connect the Console activities within your workflow to integrate logging, debugging, or basic input/output functionalities into your workflow's logic.

4. Save and activate your workflow. When executed, the "Write Line" activity will produce console output, and the "Read Line" activity will pause and wait for console input as configured.


Benefits of Using Console Section:
  • Enhanced Debugging: "Write Line" provides a straightforward way to add logging and debugging output to your workflows, making it easier to understand workflow execution and troubleshoot issues.
  • Workflow Monitoring: Enables basic monitoring of workflow progress by writing status messages or key events to a console or log.
  • Simple Interactivity: "Read Line" allows for basic text-based interaction with workflows, which can be useful for testing, development, or simple command-line style applications.
  • Basic Input/Output: Provides fundamental input and output capabilities for workflows that need to interact with a console environment.

By utilizing the Console section activities, you can add valuable logging, debugging, and basic interactive features to your ELSA workflows, particularly during the development and testing phases.