irule-diagram

name	irule-diagram
description	Generate a Mermaid flowchart of an iRule's logic flow. Extracts structured data from the compiler IR and produces a visual diagram with event subgraphs, decision points, and actions. Use when visualising iRule logic, generating F5 iRule flowcharts, diagramming iRule event flow, or documenting iRule architecture.
allowed-tools	Bash, Read

iRule Diagram

Generate a Mermaid flowchart from an iRule using compiler IR analysis.

Steps

1. Read the domain knowledge from ai/prompts/irules_system.md
2. Read the iRule file
3. Extract the structural flow data:

   uv run --no-dev python ai/claude/tcl_ai.py diagram $FILE
   

4. If the tool fails (e.g. file not found or parse error), report the error clearly and suggest fixes
5. Using the structured data (authoritative, from the compiler IR) and the source code (for reference), generate a Mermaid flowchart diagram

Mermaid diagram rules

• Use flowchart TD (top-down direction)
• Create a subgraph for each event handler, labeled with the event name
• Inside each subgraph:
  • Use diamond shapes {Decision} for switch and if decision points
  • Use rectangle shapes [Action] for commands like pool, HTTP::respond, HTTP::redirect, HTTP::header, log, etc.
  • Use rounded rectangles (Return) for return statements
  • Use stadium shapes ([Loop]) for loops
  • Connect decision points to their branches with labeled edges (the pattern or condition on the arrow)
• If procedures are called, show them as separate subgraphs linked from the call site
• Keep node labels concise (under 40 characters) -- abbreviate long strings with "..."
• Use meaningful node IDs (e.g., hr_switch not A1)
• Show the event subgraphs in firing order (top to bottom)
• If events have a non-default priority (not 500), mention it in the subgraph label
• For switch statements, show the subject being switched on in the diamond, and label each outgoing edge with the match pattern
• Use double-quoted strings for node labels containing special characters

Output

1. The Mermaid diagram in a ```mermaid code fence
2. A 2-4 paragraph explanation of what the iRule does, including:
   • Event firing order and cross-event data flow
   • Key decision points and routing logic
   • Any security-relevant actions

$ARGUMENTS