Files
smart-support/backend/app/interrupt_manager.py
Yaojia Wang 1050df780d feat: complete phase 2 -- multi-agent routing, interrupt TTL, escalation, templates
- Intent classification with LLM structured output (single/multi/ambiguous)
- Discount agent with apply_discount and generate_coupon tools
- Interrupt manager with 30-min TTL auto-expiration and retry prompts
- Webhook escalation module with exponential backoff retry (max 3)
- Three vertical industry templates (e-commerce, SaaS, fintech)
- Template loading in AgentRegistry
- Enhanced supervisor prompt with dynamic agent descriptions
- 153 tests passing, 90.18% coverage
2026-03-30 21:04:39 +02:00

116 lines
3.5 KiB
Python

"""Interrupt TTL management -- tracks pending interrupts with auto-expiration."""
from __future__ import annotations
import time
import uuid
from dataclasses import dataclass
@dataclass(frozen=True)
class InterruptRecord:
"""Immutable record of a pending interrupt."""
interrupt_id: str
thread_id: str
action: str
params: dict
created_at: float
ttl_seconds: int
@dataclass(frozen=True)
class InterruptStatus:
"""Current status of a tracked interrupt."""
is_expired: bool
remaining_seconds: float
record: InterruptRecord
class InterruptManager:
"""Manages interrupt TTL with auto-expiration.
Complements SessionManager -- this tracks interrupt-specific TTL
while SessionManager handles session-level TTL.
"""
def __init__(self, ttl_seconds: int = 1800) -> None:
self._ttl_seconds = ttl_seconds
self._interrupts: dict[str, InterruptRecord] = {}
def register(
self,
thread_id: str,
action: str,
params: dict,
) -> InterruptRecord:
"""Register a new pending interrupt with TTL tracking."""
record = InterruptRecord(
interrupt_id=uuid.uuid4().hex,
thread_id=thread_id,
action=action,
params=dict(params),
created_at=time.time(),
ttl_seconds=self._ttl_seconds,
)
self._interrupts = {**self._interrupts, thread_id: record}
return record
def check_status(self, thread_id: str) -> InterruptStatus | None:
"""Check the TTL status of a pending interrupt."""
record = self._interrupts.get(thread_id)
if record is None:
return None
elapsed = time.time() - record.created_at
remaining = max(0.0, record.ttl_seconds - elapsed)
is_expired = elapsed > record.ttl_seconds
return InterruptStatus(
is_expired=is_expired,
remaining_seconds=remaining,
record=record,
)
def resolve(self, thread_id: str) -> None:
"""Remove a resolved interrupt from tracking."""
self._interrupts = {
k: v for k, v in self._interrupts.items() if k != thread_id
}
def cleanup_expired(self) -> tuple[InterruptRecord, ...]:
"""Find and remove all expired interrupts. Returns the expired records."""
now = time.time()
expired: list[InterruptRecord] = []
active: dict[str, InterruptRecord] = {}
for thread_id, record in self._interrupts.items():
if now - record.created_at > record.ttl_seconds:
expired.append(record)
else:
active[thread_id] = record
self._interrupts = active
return tuple(expired)
def generate_retry_prompt(self, expired_record: InterruptRecord) -> dict:
"""Generate a WebSocket message prompting the user to retry an expired action."""
return {
"type": "interrupt_expired",
"thread_id": expired_record.thread_id,
"action": expired_record.action,
"message": (
f"The approval request for '{expired_record.action}' has expired "
f"after {expired_record.ttl_seconds // 60} minutes. "
f"Would you like to try again?"
),
}
def has_pending(self, thread_id: str) -> bool:
"""Check if a thread has a pending (non-expired) interrupt."""
status = self.check_status(thread_id)
if status is None:
return False
return not status.is_expired