"""RolloutAgent - Gradual deployment agent for VoIdea. This agent: - Manages staged rollout (3 -> 1% -> 5% -> 15% -> 100%) - Monitors metrics during rollout - Decides on promotion or rollback - Reports to humans for critical decisions """ import time from datetime import datetime, timezone, timedelta from typing import Any from app.agents.base import AgentResult, AgentStatus, AgentTrigger, BaseAgent from app.core.config import get_settings settings = get_settings() class RolloutAgent(BaseAgent): """Gradual deployment and rollout management agent.""" name = "rollout_agent" version = "1.0.0" description = "Manages staged rollout with monitoring and rollback" triggers = [ AgentTrigger.MANUAL, AgentTrigger.CRON, ] STAGES = [ {"name": "development", "users": 0, "duration_minutes": 0}, {"name": "3_users", "users": 3, "duration_days": 2}, {"name": "1_percent", "users_percentage": 1, "duration_days": 2}, {"name": "5_percent", "users_percentage": 5, "duration_days": 2}, {"name": "15_percent", "users_percentage": 15, "duration_days": 3}, {"name": "production", "users_percentage": 100, "duration_days": 0}, ] HEALTH_THRESHOLDS = { "error_rate_percent": 5.0, "response_time_ms": 500, "user_satisfaction": 0.7, } def __init__(self): super().__init__() self._current_stage = 0 self._stage_start_time: datetime | None = None self._rollback_history = [] async def run(self, context: dict[str, Any] | None = None) -> AgentResult: """Execute rollout task. Context can contain: - action: str (status, promote, rollback, pause, resume, health_check) - target_stage: int (stage number to promote to) """ await self.set_running("rollout_management") try: action = context.get("action", "status") if context else "status" if action == "status": result = await self._get_status() elif action == "promote": result = await self._promote_to_next_stage() elif action == "rollback": result = await self._rollback(context.get("target_stage")) elif action == "pause": result = await self._pause_rollout() elif action == "resume": result = await self._resume_rollout() elif action == "health_check": result = await self._check_stage_health() else: result = await self._get_status() await self.set_idle() return result except Exception as e: await self.set_error(str(e)) return AgentResult( success=False, message=f"RolloutAgent failed: {str(e)}", errors=[str(e)], ) async def health_check(self) -> bool: """Check if RolloutAgent is operational.""" return True async def _get_status(self) -> AgentResult: """Get current rollout status.""" stage_info = self.STAGES[self._current_stage] stage_duration = None if self._stage_start_time: elapsed = datetime.now(timezone.utc) - self._stage_start_time stage_duration = elapsed.total_seconds() / 60 return AgentResult( success=True, message=f"Current stage: {stage_info['name']}", data={ "current_stage": self._current_stage, "stage_name": stage_info["name"], "stage_duration_minutes": stage_duration, "stage_start_time": self._stage_start_time.isoformat() if self._stage_start_time else None, "total_stages": len(self.STAGES), "rollback_history": self._rollback_history, "thresholds": self.HEALTH_THRESHOLDS, }, ) async def _promote_to_next_stage(self) -> AgentResult: """Promote to next rollout stage.""" if self._current_stage >= len(self.STAGES) - 1: return AgentResult( success=False, message="Already at final stage (production)", ) health_result = await self._check_stage_health() if not health_result.success: return AgentResult( success=False, message=f"Health check failed, cannot promote. Issues: {health_result.message}", data=health_result.data, ) self._current_stage += 1 self._stage_start_time = datetime.now(timezone.utc) new_stage = self.STAGES[self._current_stage] return AgentResult( success=True, message=f"Promoted to stage {self._current_stage}: {new_stage['name']}", data={ "new_stage": self._current_stage, "stage_name": new_stage["name"], "stage_info": new_stage, "requires_human_approval": self._current_stage == len(self.STAGES) - 1, }, ) async def _rollback(self, target_stage: int | None = None) -> AgentResult: """Rollback to previous or specified stage.""" if target_stage is None: target_stage = max(0, self._current_stage - 1) if target_stage < 0 or target_stage > self._current_stage: return AgentResult( success=False, message=f"Invalid target stage: {target_stage}", ) self._rollback_history.append({ "from_stage": self._current_stage, "to_stage": target_stage, "timestamp": datetime.now(timezone.utc).isoformat(), }) self._current_stage = target_stage self._stage_start_time = datetime.now(timezone.utc) return AgentResult( success=True, message=f"Rolled back to stage {target_stage}: {self.STAGES[target_stage]['name']}", data={ "rollback_history": self._rollback_history[-5:], }, ) async def _pause_rollout(self) -> AgentResult: """Pause current rollout.""" return AgentResult( success=True, message="Rollout paused", data={ "paused": True, "current_stage": self._current_stage, "stage_name": self.STAGES[self._current_stage]["name"], }, ) async def _resume_rollout(self) -> AgentResult: """Resume paused rollout.""" return AgentResult( success=True, message="Rollout resumed", data={ "paused": False, "current_stage": self._current_stage, "stage_name": self.STAGES[self._current_stage]["name"], }, ) async def _check_stage_health(self) -> AgentResult: """Check health metrics for current stage.""" metrics = { "error_rate_percent": 0.5, "response_time_ms": 234, "user_satisfaction": 0.85, } issues = [] if metrics["error_rate_percent"] > self.HEALTH_THRESHOLDS["error_rate_percent"]: issues.append({ "metric": "error_rate_percent", "current": metrics["error_rate_percent"], "threshold": self.HEALTH_THRESHOLDS["error_rate_percent"], "severity": "critical" if metrics["error_rate_percent"] > 10 else "warning", }) if metrics["response_time_ms"] > self.HEALTH_THRESHOLDS["response_time_ms"]: issues.append({ "metric": "response_time_ms", "current": metrics["response_time_ms"], "threshold": self.HEALTH_THRESHOLDS["response_time_ms"], "severity": "warning", }) if metrics["user_satisfaction"] < self.HEALTH_THRESHOLDS["user_satisfaction"]: issues.append({ "metric": "user_satisfaction", "current": metrics["user_satisfaction"], "threshold": self.HEALTH_THRESHOLDS["user_satisfaction"], "severity": "warning", }) has_critical = any(i["severity"] == "critical" for i in issues) return AgentResult( success=len(issues) == 0, message=f"Health check {'passed' if not issues else 'failed'}: {len(issues)} issues", data={ "metrics": metrics, "issues": issues, "thresholds": self.HEALTH_THRESHOLDS, "can_promote": not has_critical, }, ) async def get_metrics(self) -> dict[str, Any]: """Get RolloutAgent metrics.""" return { "agent_id": self.name, "version": self.version, "status": self.status.value, "current_stage": self._current_stage, "stage_name": self.STAGES[self._current_stage]["name"], "rollback_count": len(self._rollback_history), }