This is a proposal for adding debug capabilities to Dagu. Before we build this, we'd love to hear:

• Would this solve your debugging pain points?
• Which features would you use most?
• What's missing from this proposal?

Please feel free to share your thoughts in the comments!

Problem

When DAGs fail, developers only have logs. They need to pause execution and inspect what's happening in real-time.

Solution

Add debugging capabilities: breakpoints, step-through execution, and variable inspection.

Execution Control:

• Set breakpoints on steps
• Pause and resume execution
• Execute one step at a time

State Inspection:

• View all variables and their values
• Inspect step outputs

Roadmap (draft)

Ph1

• Pause/resume at named steps
• Step-through execution
• CLI support

Ph2

• Variable watch lists
• View current variables
• Web UI debugger

Ph3

• Modify variables during debug