Teknium
85 lines
3.4 KiB
Python
85 lines
3.4 KiB
Python
"""Shared session activity observation contract.
|
|
|
|
Observation-only: timestamp + bounded description/provenance. Notification, timeout, kill and
|
|
retry policy live in their own components. Provenance is a small closed enum of *noun* sources;
|
|
the default agent clock stamps ``unknown`` unless a writer passes an explicit ``provenance=``.
|
|
"""
|
|
|
|
from __future__ import annotations
|
|
|
|
import time
|
|
from contextlib import suppress
|
|
from enum import Enum
|
|
from typing import Any, Mapping, Optional
|
|
|
|
ACTIVITY_DESCRIPTION_MAX = 120
|
|
|
|
# Durable SessionDB heartbeat cadence. Contract: MUST stay >= 30s — the SessionDB write path is
|
|
# contended and this observation-only projection never justifies extra write pressure. A code
|
|
# constant on purpose (no config can turn it into a high-frequency writer); matches the kanban
|
|
# auto-heartbeat. force_persist (terminal stamps) is the only bypass.
|
|
SESSION_ACTIVITY_HEARTBEAT_MIN_INTERVAL_SECONDS = 60.0
|
|
|
|
|
|
class ActivityProvenance(str, Enum):
|
|
"""Where a durable/in-memory activity stamp came from."""
|
|
|
|
UNKNOWN = "unknown"
|
|
# Compression writers: heartbeat, host timeout, cooldown, turn hold.
|
|
AGENT_COMPRESSION = "agent.compression"
|
|
AGENT_COMPRESSION_TIMEOUT = "agent.compression_timeout"
|
|
AGENT_COMPRESSION_COOLDOWN = "agent.compression_cooldown"
|
|
AGENT_COMPRESSION_TURNHOLD = "agent.compression_turnhold"
|
|
|
|
|
|
def bound_activity_description(description: Optional[str]) -> str:
|
|
"""Clamp free-form activity text to the shared description budget."""
|
|
text = (description or "").strip()
|
|
return text if len(text) <= ACTIVITY_DESCRIPTION_MAX else text[: ACTIVITY_DESCRIPTION_MAX - 1] + "…"
|
|
|
|
|
|
def normalize_activity_provenance(provenance: Optional[ActivityProvenance | str]) -> ActivityProvenance:
|
|
"""Return a known provenance, or ``UNKNOWN`` when unset/unrecognized."""
|
|
if isinstance(provenance, ActivityProvenance):
|
|
return provenance
|
|
try:
|
|
return ActivityProvenance((provenance or "").strip())
|
|
except ValueError:
|
|
return ActivityProvenance.UNKNOWN
|
|
|
|
|
|
def reset_session_activity_persist_window(agent: Any) -> None:
|
|
"""Clear the durable persist rate-limit so the next stamp writes through (terminal compression
|
|
labels must not stay stuck on mid-compress text)."""
|
|
with suppress(Exception):
|
|
agent._session_activity_last_persist_mono = 0.0
|
|
|
|
|
|
def build_activity_snapshot(
|
|
*,
|
|
last_activity_at: Optional[float],
|
|
last_activity_description: Optional[str],
|
|
last_activity_provenance: Optional[ActivityProvenance | str] = None,
|
|
now: Optional[float] = None,
|
|
extra: Optional[Mapping[str, Any]] = None,
|
|
) -> dict[str, Any]:
|
|
"""Build the shared activity snapshot (plus optional caller extras)."""
|
|
when = float(last_activity_at) if last_activity_at is not None else None
|
|
clock = float(now if now is not None else time.time())
|
|
desc = bound_activity_description(last_activity_description)
|
|
prov = normalize_activity_provenance(last_activity_provenance).value
|
|
snap: dict[str, Any] = {
|
|
"last_activity_at": when,
|
|
"last_activity_description": desc,
|
|
"last_activity_provenance": prov,
|
|
"seconds_since_activity": round(clock - when, 1) if when is not None else None,
|
|
# Short aliases used by existing gateway/delegate readers.
|
|
"last_activity_ts": when,
|
|
"last_activity_desc": desc,
|
|
"description": desc,
|
|
"provenance": prov,
|
|
}
|
|
if extra:
|
|
snap.update(dict(extra))
|
|
return snap
|