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Agent Request Manager
Handles agent requests for user input, decisions, and permissions
with full governance tracking and audit trail.
Features:
- Permission requests
- Decision requests
- Input requests
- Confirmation requests
- Request expiration and revocation
"""
import asyncio
from datetime import datetime, timedelta
import logging
from typing import Any, Dict, List, Optional
import uuid
from sqlalchemy.orm import Session
from core.agent_governance_service import AgentGovernanceService
from core.models import AgentRegistry, AgentRequestLog, CanvasAudit
from core.websockets import manager as ws_manager
logger = logging.getLogger(__name__)
# Feature flags
import os
AGENT_REQUESTS_ENABLED = os.getenv("AGENT_REQUESTS_ENABLED", "true").lower() == "true"
class AgentRequestManager:
"""
Manages agent requests for user input/decisions.
Provides a structured way for agents to request permissions, decisions,
or input from users with full audit trail and governance.
"""
# Request timeouts by urgency
REQUEST_TIMEOUTS = {
"low": 3600, # 1 hour
"medium": 600, # 10 minutes
"high": 60, # 1 minute
"blocking": 30 # 30 seconds
}
def __init__(self, db: Session):
self.db = db
self.governance = AgentGovernanceService(db)
self._pending_requests: Dict[str, asyncio.Event] = {}
async def create_permission_request(
self,
user_id: str,
agent_id: str,
title: str,
permission: str,
context: Dict[str, Any],
urgency: str = "medium",
expires_in: Optional[int] = None
) -> str:
"""
Create a permission request from agent to user.
Args:
user_id: User ID
agent_id: Agent ID requesting permission
title: Request title
permission: Permission being requested
context: Context dict with operation, impact, alternatives
urgency: Urgency level (low, medium, high, blocking)
expires_in: Optional custom expiration time in seconds
Returns:
request_id: Unique request ID
"""
if not AGENT_REQUESTS_ENABLED:
return str(uuid.uuid4())
try:
# Generate request ID
request_id = str(uuid.uuid4())
# Get agent
agent = self.db.query(AgentRegistry).filter(
AgentRegistry.id == agent_id
).first()
agent_name = agent.name if agent else "Agent"
# Calculate expiration
timeout = expires_in or self.REQUEST_TIMEOUTS.get(urgency, 600)
expires_at = datetime.utcnow() + timedelta(seconds=timeout)
# Create options
options = [
{
"label": "Approve",
"description": f"Allow {agent_name} to use this permission",
"consequences": f"{agent_name} will be able to perform this action now and in the future",
"action": "approve"
},
{
"label": "Approve Once",
"description": "Allow this single action",
"consequences": f"{agent_name} will perform this action once, then ask again",
"action": "approve_once"
},
{
"label": "Deny",
"description": "Don't allow this action",
"consequences": f"{agent_name} will not be able to perform this action",
"action": "deny"
}
]
# Create request data
request_data = {
"request_id": request_id,
"agent_id": agent_id,
"agent_name": agent_name,
"request_type": "permission",
"urgency": urgency,
"title": title,
"explanation": f"I need permission to: {permission}",
"permission": permission,
"context": context,
"options": options,
"suggested_option": 1, # Approve Once - safe default
"governance": {
"requires_signature": urgency == "blocking",
"audit_log_required": True,
"revocable": True
}
}
# Create log entry
request_log = AgentRequestLog(
id=str(uuid.uuid4()),
agent_id=agent_id,
user_id=user_id,
request_id=request_id,
request_type="permission",
request_data=request_data,
expires_at=expires_at
)
self.db.add(request_log)
self.db.commit()
# Create event for response
self._pending_requests[request_id] = asyncio.Event()
# Broadcast request
await ws_manager.broadcast(
f"user:{user_id}",
{
"type": "agent:request",
"data": request_data
}
)
# Create audit
await self._create_audit(
agent_id=agent_id,
user_id=user_id,
request_id=request_id,
action="create_permission_request"
)
logger.info(
f"Created permission request {request_id} from agent {agent_id}, "
f"user {user_id}"
)
return request_id
except Exception as e:
logger.error(f"Failed to create permission request: {e}")
return str(uuid.uuid4())
async def create_decision_request(
self,
user_id: str,
agent_id: str,
title: str,
explanation: str,
options: List[Dict[str, Any]],
context: Dict[str, Any],
urgency: str = "low",
suggested_option: int = 0,
expires_in: Optional[int] = None
) -> str:
"""
Create a decision request from agent to user.
Args:
user_id: User ID
agent_id: Agent ID requesting decision
title: Request title
explanation: Why agent needs this decision
options: List of decision options
context: Context dict
urgency: Urgency level
suggested_option: Index of suggested option
expires_in: Optional expiration time
Returns:
request_id: Unique request ID
"""
if not AGENT_REQUESTS_ENABLED:
return str(uuid.uuid4())
try:
request_id = str(uuid.uuid4())
# Get agent
agent = self.db.query(AgentRegistry).filter(
AgentRegistry.id == agent_id
).first()
agent_name = agent.name if agent else "Agent"
# Calculate expiration
timeout = expires_in or self.REQUEST_TIMEOUTS.get(urgency, 3600)
expires_at = datetime.utcnow() + timedelta(seconds=timeout)
# Create request data
request_data = {
"request_id": request_id,
"agent_id": agent_id,
"agent_name": agent_name,
"request_type": "decision",
"urgency": urgency,
"title": title,
"explanation": explanation,
"context": context,
"options": options,
"suggested_option": suggested_option,
"governance": {
"requires_signature": False,
"audit_log_required": True,
"revocable": True
}
}
# Create log entry
request_log = AgentRequestLog(
id=str(uuid.uuid4()),
agent_id=agent_id,
user_id=user_id,
request_id=request_id,
request_type="decision",
request_data=request_data,
expires_at=expires_at
)
self.db.add(request_log)
self.db.commit()
# Create event for response
self._pending_requests[request_id] = asyncio.Event()
# Broadcast request
await ws_manager.broadcast(
f"user:{user_id}",
{
"type": "agent:request",
"data": request_data
}
)
# Create audit
await self._create_audit(
agent_id=agent_id,
user_id=user_id,
request_id=request_id,
action="create_decision_request"
)
logger.info(
f"Created decision request {request_id} from agent {agent_id}"
)
return request_id
except Exception as e:
logger.error(f"Failed to create decision request: {e}")
return str(uuid.uuid4())
async def wait_for_response(
self,
request_id: str,
timeout: Optional[int] = None
) -> Optional[Dict[str, Any]]:
"""
Wait for user response to a request.
Args:
request_id: Request ID to wait for
timeout: Optional timeout in seconds (default: use request urgency)
Returns:
User response dict or None if timeout
"""
if request_id not in self._pending_requests:
logger.warning(f"Request {request_id} not found")
return None
try:
# Get timeout from request if not provided
if timeout is None:
request_log = self.db.query(AgentRequestLog).filter(
AgentRequestLog.request_id == request_id
).first()
if request_log and request_log.expires_at:
timeout = int((request_log.expires_at - datetime.utcnow()).total_seconds())
else:
timeout = 600 # Default 10 minutes
# Wait for response
event = self._pending_requests[request_id]
try:
await asyncio.wait_for(event.wait(), timeout=timeout)
except asyncio.TimeoutError:
logger.warning(f"Request {request_id} timed out")
# Mark as expired
request_log = self.db.query(AgentRequestLog).filter(
AgentRequestLog.request_id == request_id
).first()
if request_log:
request_log.revoked = True
self.db.commit()
return None
# Get response
request_log = self.db.query(AgentRequestLog).filter(
AgentRequestLog.request_id == request_id
).first()
if request_log:
return request_log.user_response
return None
except Exception as e:
logger.error(f"Failed to wait for response: {e}")
return None
finally:
# Clean up
self._pending_requests.pop(request_id, None)
async def handle_response(
self,
user_id: str,
request_id: str,
response: Dict[str, Any]
):
"""
Handle user response to a request.
Args:
user_id: User ID
request_id: Request ID
response: User's response
"""
if not AGENT_REQUESTS_ENABLED:
return
try:
# Get request log
request_log = self.db.query(AgentRequestLog).filter(
AgentRequestLog.request_id == request_id,
AgentRequestLog.user_id == user_id
).first()
if not request_log:
logger.warning(f"Request {request_id} not found for user {user_id}")
return
# Check if expired
if request_log.expires_at and datetime.utcnow() > request_log.expires_at:
logger.warning(f"Request {request_id} has expired")
return
# Update log
request_log.user_response = response
request_log.responded_at = datetime.utcnow()
request_log.response_time_seconds = (
datetime.utcnow() - request_log.created_at
).total_seconds()
self.db.commit()
# Trigger event
if request_id in self._pending_requests:
self._pending_requests[request_id].set()
# Create audit
await self._create_audit(
agent_id=request_log.agent_id,
user_id=user_id,
request_id=request_id,
action="handle_response",
metadata={"response": response}
)
logger.info(f"Handled response for request {request_id}")
except Exception as e:
logger.error(f"Failed to handle response: {e}")
async def revoke_request(
self,
request_id: str
):
"""
Revoke a pending request.
Args:
request_id: Request ID to revoke
"""
try:
# Get request log
request_log = self.db.query(AgentRequestLog).filter(
AgentRequestLog.request_id == request_id
).first()
if request_log:
request_log.revoked = True
self.db.commit()
# Trigger event with None response
if request_id in self._pending_requests:
self._pending_requests[request_id].set()
logger.info(f"Revoked request {request_id}")
except Exception as e:
logger.error(f"Failed to revoke request: {e}")
async def _create_audit(
self,
agent_id: str,
user_id: str,
request_id: str,
action: str,
metadata: Optional[Dict[str, Any]] = None
):
"""Create canvas audit entry."""
try:
audit = CanvasAudit(
id=str(uuid.uuid4()),
workspace_id="default",
agent_id=agent_id,
agent_execution_id=None,
user_id=user_id,
canvas_id=None,
session_id=None,
component_type="agent_request_prompt",
component_name="agent_request_manager",
action=action,
audit_metadata={
"request_id": request_id,
**(metadata or {})
},
governance_check_passed=True
)
self.db.add(audit)
self.db.commit()
except Exception as e:
logger.error(f"Failed to create audit: {e}")
# Singleton instance helper
def get_agent_request_manager(db: Session) -> AgentRequestManager:
"""Get or create agent request manager instance."""
return AgentRequestManager(db)
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