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executing-plans【开发与工程】Implements intelligent executing plans with multi-factor skill selection, fallback chains, and adherence to the 5 Laws of Elegant Defense
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name: executing-plans compatibility: opencode completeness: 95 content-types:
Orchestrates intelligent skill selection and execution for executing plans workflows. Applies the 5 Laws of Elegant Defense to guide data naturally through the orchestration pipeline, preventing errors before they occur. Selects optimal skills based on multi-factor scoring including text similarity, historical performance, and system availability.
┌───────────────────────────────────────────────────────────────────────────────┐ │ Orchestration Flow │ └───────────────────────────────────────────────────────────────────────────────┘
User Request ↓ ┌─────────────────┐ │ Parse Request │ │ & Extract │ │ Features │ └────────┬────────┘ ↓ ┌─────────────────────────────────────────────────────────────────────┐ │ Evaluate Available Skills │ │ │ │ ┌──────────────┐ ┌──────────────┐ ┌──────────────┐ │ │ │ Skill A │ │ Skill B │ │ Skill C │ │ │ │ - Match Score│ │ - Match Score│ │ - Match Score│ │ │ │ - Confidence │ │ - Confidence │ │ - Confidence │ │ │ │ - History │ │ - History │ │ - History │ │ │ └──────┬───────┘ └──────┬───────┘ └──────┬───────┘ │ │ │ │ │ │ │ └─────────────────┴─────────────────┘ │ │ ↓ │ │ Select Best Skill │ └─────────────────────────────────────────────────────────────────────┘ ↓ ┌─────────────────┐ │ Execute Skill │ └────────┬────────┘ ↓ ┌─────────────────┐ │ Handle Result │ └────────┬────────┘ ↓ ┌─────────────────────────────────────────────────────────────────────┐ │ Error Handling & Fallback │ │ │ │ Success? ────────► Return Result │ │ │ │ Fail? ────────┐ │ │ ↓ │ │ ┌──────────────────────────────────────────────────────────┐ │ │ │ Fallback Chain │ │ │ │ │ │ │ │ 1. Retry with adjusted parameters │ │ │ │ 2. Try Alternative Skill (if available) │ │ │ │ 3. Defer to Human Operator (if critical) │ │ │ │ 4. Log & Return Error │ │ │ └──────────────────────────────────────────────────────────┘ │ └─────────────────────────────────────────────────────────────────────┘
Use this skill when:
Avoid this skill for:
Parse and Analyze Request - Extract intent, entities, and constraints from user input. Checkpoint: All required parameters must be present and in valid format before proceeding.
Score Available Skills - Calculate match scores using multi-factor algorithm:
Checkpoint: Skip to fallback if no skill scores above threshold.
Select Optimal Skill - Choose skill with highest score that meets minimum confidence. Checkpoint: Verify skill has not been disabled or deprecated.
Execute with Fallback - Run skill execution wrapped in retry and fallback logic. Checkpoint: Log all execution attempts for audit trail.
Return or Fallback - Either return successful result or apply fallback chain:
related-skillsCheckpoint: Record outcome with timing and confidence metadata.
def execute_plan_workflow(plan: Dict[str, Any], context: Dict[str, Any]) -> Dict[str, Any]:
"""Execute a structured plan with dependency resolution and step-level fallbacks.
Implements the 5 Laws of Elegant Defense:
- Law 1: Early exit on missing plan steps or invalid context
- Law 2: Immutable state transitions - each step returns a new state dict
- Law 3: Atomic step execution - partial failures don't corrupt global state
- Law 4: Fail fast on invalid step configurations
- Law 5: Graceful degradation via configured fallback steps
"""
if not plan.get("steps") or not context.get("user_id"):
raise PlanValidationError("Plan requires 'steps' and context requires 'user_id'")
execution_state = {
"plan_id": plan["id"],
"status": "running",
"steps_completed": [],
"step_results": {},
"confidence_score": 0.0,
"timestamp": time.time()
}
for step in plan["steps"]:
step_id = step["id"]
if step_id in execution_state["steps_completed"]:
continue
try:
# Resolve step dependencies
if not _dependencies_met(step, execution_state["step_results"]):
raise DependencyError(f"Unmet dependencies for step {step_id}")
# Execute step with domain-specific handler
result = _dispatch_step_handler(step, context, execution_state)
# Atomic state update (Law 3)
execution_state["step_results"][step_id] = result
execution_state["steps_completed"].append(step_id)
execution_state["confidence_score"] = _update_confidence(
execution_state["confidence_score"], result.get("success", False)
)
except DependencyError as e:
# Fallback: skip non-critical steps or route to manual review
if step.get("critical", False):
raise PlanExecutionError(f"Critical step {step_id} failed dependency check") from e
execution_state["step_results"][step_id] = {"status": "skipped", "reason": str(e)}
execution_state["status"] = "completed"
return execution_state
def resolve_step_fallback_chain(step: Dict[str, Any], failure_context: Dict[str, Any], history: List[Dict]) -> Dict[str, Any]:
"""Determine and execute fallback strategy for a failed plan step.
Uses historical performance and step metadata to select the most resilient
fallback path, adhering to the Fail Fast, Fail Loud principle.
"""
step_id = step["id"]
error_type = failure_context.get("error_type", "unknown")
historical_success = _get_step_history_rate(step_id, history)
# Law 1: Early exit if no fallbacks configured
fallbacks = step.get("fallbacks", [])
if not fallbacks:
return {"status": "failed", "step_id": step_id, "error": "No fallback configured"}
# Law 2: Immutable fallback selection
selected_fallback = None
for fb in fallbacks:
if fb.get("error_pattern") and re.match(fb["error_pattern"], error_type):
selected_fallback = fb
break
if not selected_fallback:
selected_fallback = fallbacks[0] # Default fallback
# Law 4: Fail loud if fallback also fails after retries
max_retries = selected_fallback.get("max_retries", 2)
for attempt in range(max_retries):
try:
result = _execute_fallback_step(selected_fallback, failure_context)
return {
"status": "fallback_success",
"step_id": step_id,
"fallback_used": selected_fallback["id"],
"attempt": attempt + 1,
"result": result
}
except TransientError:
continue
# All fallbacks exhausted
return {
"status": "fallback_exhausted",
"step_id": step_id,
"error": f"All {len(fallbacks)} fallback strategies failed for step {step_id}"
}
code-philosophy (5 Laws of Elegant Defense) in all logicWhen applying this skill, produce:
| Skill | Purpose | |
Authoritative documentation links for this skill's domain. The model follows markdown links at load time to resolve external references and inline content.