65b0ff38ea
`terminal(background=true, heartbeat=N)` emits a `heartbeat` event every N seconds (floor 60) carrying only the output produced since the previous one, plus the usual completion notice. The agent stays current on a long bounded job (merge train, full test suite, deploy) and reacts to a failure within N seconds instead of at exit. Why: `notify=true` fires once at exit, so multi-hour merge trains ran silently — the parent's prompt cache went cold and every "what's up" cost 5–10 rediscovery calls; 30 days of batch sessions show 4,930 hand status polls (14% of all tool calls). `notify=[pattern]` cannot serve this: its lifetime cap (8) exists precisely to stop periodic output from flooding the agent. Mechanism: one daemon timer thread for every heartbeat session (reader threads block on the pipe and cannot keep time); delta output via a total-ingested counter over the rolling buffer; heartbeats only where the completion notice can be delivered (same async-support/subagent gates), never after exit. `heartbeat_seconds` is checkpointed. Rendered on CLI, gateway and TUI through the existing process-notification paths.
446 lines
22 KiB
Python
446 lines
22 KiB
Python
"""Human-readable rendering of ``ProcessRegistry.completion_queue`` events (completion,
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watch_match, watch_disabled, watch_overflow_*, async_delegation) into the
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``[IMPORTANT: ...]`` / ``[ASYNC DELEGATION ...]`` text the CLI drain loop, gateway and
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TUI inject into the agent conversation."""
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import time
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from dataclasses import dataclass
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from contextlib import suppress
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_DONE = ("completed", "success")
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_REASON_STATUS = {"lost": "marked lost because the process backend disappeared", "failed_start": "failed to start"}
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@dataclass(frozen=True, slots=True)
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class ProcessNotificationBatch:
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"""Keep completion identity until the owning surface starts its turn."""
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notifications: tuple[tuple[dict, str], ...]
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def _live(self, registry) -> list:
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return [(event, text) for event, text in self.notifications
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if not registry.is_completion_consumed(event.get("session_id", ""))]
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def render(self, registry) -> str | None:
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messages = [text for _event, text in self._live(registry)]
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if not messages:
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return None
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if len(messages) == 1:
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return messages[0]
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header = (f"[IMPORTANT: {len(messages)} background processes completed. "
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"Treat these results as one batch and give one consolidated response; "
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"preserve failures and actionable results.]")
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return "\n\n".join((header, *messages))
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def display_text(self, registry) -> str:
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return process_completion_display_text([event for event, _text in self._live(registry)])
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def group_process_notifications(notifications):
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"""Group consecutive completions only; watches and delegations are barriers."""
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batch = []
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for event, text in notifications:
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if event.get("type", "completion") == "completion":
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batch.append((event, text))
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else:
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if batch:
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yield tuple(batch)
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batch = []
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yield ((event, text),)
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if batch:
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yield tuple(batch)
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def _format_age(seconds: float) -> str:
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"""Human-friendly elapsed string ('18m', '2h3m', '45s')."""
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try:
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s = int(max(0, seconds))
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except (TypeError, ValueError):
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return "?"
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if s < 60:
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return f"{s}s"
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m, s = divmod(s, 60)
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if m < 60:
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return f"{m}m" + (f"{s}s" if s else "")
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h, m = divmod(m, 60)
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return f"{h}h" + (f"{m}m" if m else "")
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def _model_not_found_patterns() -> "list[str]":
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"""Model-not-found phrases from ``agent.error_classifier`` (the failover path's
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own list, so nothing drifts); a minimal built-in set if the import fails.
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Imported from ``agent.error_classifier`` so the batch renderer applies the SAME classification the
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failover path consumes — no hand-copied pattern list to drift. Fails open to a minimal built-in set so a
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classifier import problem never hides the per-task blocks. See #97667.
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"""
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try:
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from agent.error_classifier import _MODEL_NOT_FOUND_PATTERNS
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return list(_MODEL_NOT_FOUND_PATTERNS)
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except Exception:
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return ["is not a valid model", "model not found", "model_not_found"]
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def _delegation_config() -> dict:
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"""Active delegation config; ``{}`` on any error. Lazy: delegate_tool is heavy."""
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try:
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from tools.delegate_tool import _load_config as _cfg
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return _cfg() or {}
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except Exception:
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return {}
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def _delegation_model_not_found(results, config) -> bool:
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"""True when a result reflects a config-level model_not_found rejection: needs a
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model-not-found phrase AND the currently-configured model name in the same text,
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so a stale task failing on a removed model is not mis-attributed to the config."""
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model = str((config or {}).get("model") or "").lower()
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if not model:
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return False
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patterns = _model_not_found_patterns()
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texts = (" ".join(str(x) for x in (r.get("error"), r.get("summary")) if x).lower() for r in results or [])
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return any(model in text and any(p in text for p in patterns) for text in texts)
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def _delegation_model_not_found_notice(results) -> "list[str] | None":
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"""Config-level model_not_found notice lines, or None (fail-open) — once per batch."""
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config = _delegation_config()
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if not _delegation_model_not_found(results, config):
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return None
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model = config.get("model") or "?"
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provider = config.get("provider") or "configured provider"
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lines = [
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"⚠ SUBAGENT MODEL REJECTED: the configured Subagent Model "
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f'"{model}" was rejected by provider "{provider}" '
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"(HTTP 400: not a valid model ID).",
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"Every task in this batch failed for this reason before doing any work.",
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"Check Settings → Advanced → Subagent Model (or: hermes config get delegation.model)."]
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with suppress(Exception):
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from hermes_cli.fallback_config import get_fallback_chain
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if not get_fallback_chain(config):
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lines.append("No fallback chain is configured, so no failover was attempted.")
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return lines
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_TRUNCATED_SUMMARY_NOTE = (
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"[TRUNCATED — subagent hit its iteration cap; the summary below "
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"may be incomplete. Verify before relying on it, or re-dispatch "
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"the unfinished part.]")
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def _is_truncated(entry: dict) -> bool:
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return bool(entry.get("truncated") or entry.get("exit_reason") == "max_iterations")
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def _notice_lines(results) -> "list[str]":
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"""Blank + model_not_found notice block, or [] when the notice does not apply."""
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notice = _delegation_model_not_found_notice(results)
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return ["", *notice] if notice else []
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def _preamble(evt: dict, title: str, intro: str, completed_at: float, *, with_goal: bool) -> "list[str]":
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"""Shared preamble: title, intro, blank, dispatch time, [goal], context/toolsets, role+model."""
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lines = [title, intro, ""]
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dispatched_at = evt.get("dispatched_at")
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if isinstance(dispatched_at, (int, float)):
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ts = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime(dispatched_at))
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lines.append(f"Dispatched: {ts} ({_format_age(completed_at - dispatched_at)} ago)")
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if with_goal:
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lines.append(f"Original goal: {evt.get('goal', '') or ''}")
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if evt.get("context"):
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lines.append(f"Context you provided: {evt['context']}")
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if evt.get("toolsets"):
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lines.append(f"Toolsets: {', '.join(evt['toolsets'])}")
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lines.append(f"Role: {evt.get('role') or 'leaf'} Model: {evt.get('model') or '?'}")
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return lines
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def _format_task_failure_notice(evt: dict, deleg_id: str) -> str:
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"""One child of a still-running fan-out failed: say which, why, and that the batch goes on."""
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(r,) = (evt.get("results") or [{}])[:1] or [{}]
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goals, idx, n = evt.get("goals") or [], r.get("task_index", 0), evt.get("n_tasks") or len(evt.get("goals") or [])
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goal = goals[idx] if idx < len(goals) else r.get("goal", "")
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err = str(r.get("error") or "").strip().replace("\n", " ")[:400]
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lines = [
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f"[ASYNC DELEGATION TASK FAILED — {deleg_id}, task {idx + 1}/{n}]",
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"One subagent in a background fan-out you dispatched has failed while its siblings are still running. "
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"The batch's consolidated results will still arrive when the last sibling finishes; this is an early "
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"warning so you can re-dispatch or investigate now instead of then.",
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f"Task: {goal}" if goal else "",
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f"Status: {r.get('status', '?')} Duration: {r.get('duration_seconds', '?')}s" + (f"\nError: {err}" if err else ""),
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]
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if r.get("live_transcript"):
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lines.append(f"Live transcript: {r['live_transcript']}")
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return "\n".join(line for line in lines if line)
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def _recovery_lines(evt: dict) -> "list[str]":
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"""Owner-died recovery diagnostics (``recover_abandoned_delegations``): last persisted
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status, per-task transcript paths, their verbatim tails and the owner's git state."""
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if not evt.get("last_known_status"):
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return []
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lines = [f"Last persisted unit status: {evt['last_known_status']} (before owner exit; not current liveness). "
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"Unrecorded outcomes remain unknown; inspect evidence before retrying side effects."]
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tails = evt.get("transcript_tails") or {}
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for index, path in (evt.get("task_transcripts") or {}).items():
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lines.append(f"Task index {index} transcript (may be incomplete): {path}")
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if tails.get(index):
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lines += [f"--- last lines of task {index} transcript ---", tails[index], "--- end ---"]
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if evt.get("git_state_hint"):
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lines.append(f"Owner working tree at recovery: {evt['git_state_hint']}")
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return lines
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def _format_batch_delegation(evt: dict, deleg_id: str, completed_at: float) -> str:
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"""Consolidated block for a delegate_task fan-out that finished as one unit."""
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results, goals = evt.get("results") or [], evt.get("goals") or []
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# ``goals`` is the whole delegate_task call (task_index indexes it); ``results`` is this unit's subset.
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n, n_unit = len(goals) or len(results), len(results) or len(goals)
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group = evt.get("group")
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unit = f"group '{group}' ({n_unit} subagent(s))" if group is not None else f"{n_unit} subagent(s)"
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lines = _preamble(
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evt,
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f"[ASYNC DELEGATION BATCH COMPLETE — {deleg_id}]",
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f"A background fan-out unit you dispatched earlier — {unit} — has finished; its consolidated results are "
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"below. Any other units from the same delegate_task call report separately as they finish. You may have "
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"moved on since dispatching — act on these or re-dispatch if things have changed. If you are still waiting "
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"on siblings, end your turn after acting on this one.",
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completed_at, with_goal=False)
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lines[-1] += f" Total duration: {evt.get('total_duration_seconds', evt.get('duration_seconds', '?'))}s"
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lines += _recovery_lines(evt)
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if evt.get("error") and not results:
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lines += ["--- ERROR ---", f"The batch did not complete successfully: {evt['error']}"]
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return "\n".join(lines)
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# Config-level rejection notice BEFORE the per-task wall — a rejected
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# delegation model fails every task identically and must not stay buried.
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lines += _notice_lines(results)
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for r in sorted(results, key=lambda x: x.get("task_index", 0)):
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idx, r_truncated = r.get("task_index", 0), _is_truncated(r)
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r_status, r_summary, r_error = r.get("status", "?"), r.get("summary"), r.get("error")
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r_goal = goals[idx] if idx < len(goals) else r.get("goal", "")
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icon = "⚠" if r_truncated else ("✓" if r_status in _DONE else "✗")
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header = (f"--- {icon} TASK {idx + 1}/{n}" + (f": {r_goal}" if r_goal else "") + f" (status={r_status}"
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+ (f", api_calls={r['api_calls']}" if r.get("api_calls") else "")
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+ (f", {r['duration_seconds']}s" if r.get("duration_seconds") is not None else "")
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+ (", TRUNCATED: hit max_iterations — work may be incomplete" if r_truncated else ""))
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lines += ["", header + ") ---"]
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if r_status in _DONE and r_summary:
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if r_truncated:
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lines.append(_TRUNCATED_SUMMARY_NOTE)
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lines.append(r_summary)
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elif r_summary:
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if r_error:
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lines.append(f"({r_status}: {r_error})")
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lines += ["Partial output:", r_summary]
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else:
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lines.append(f"(no summary — status={r_status}" + (f": {r_error}" if r_error else "") + ")")
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if r.get("live_transcript"):
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lines.append(f"Full live transcript (complete tool/assistant trace): {r['live_transcript']}")
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lines += _process_accounting_lines(r)
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return "\n".join(lines)
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def _process_accounting_lines(r: dict) -> list:
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"""Runtime-truth lines about a child's background processes: what it handed to you (you own it now, its
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completion lands here) and what it left running (terminated at teardown — never trust a child's "watcher running")."""
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lines = []
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for h in r.get("handed_off_processes") or []:
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lines.append(f"Handed off to you: {h.get('session_id')} ({h.get('command', '')[:120]}) — {h.get('note', '')}. "
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"You own it now; its completion notice will arrive here.")
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orphans = r.get("orphaned_processes") or []
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if orphans:
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lines.append(f"Child left {len(orphans)} background process(es) running that were TERMINATED with it "
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"(subagent process notices never reach you): "
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+ "; ".join(f"{o.get('session_id')} `{o.get('command', '')[:100]}` ({o.get('runtime_seconds')}s)" for o in orphans)
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+ ". Re-launch in this session anything you still need.")
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for u in r.get("unread_completions") or []:
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lines.append(f"Child's process {u.get('session_id')} `{u.get('command', '')[:100]}` finished (exit code "
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f"{u.get('exit_code')}) but the child never read its result; output tail:\n{u.get('output_tail', '')}")
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return lines
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def _format_async_delegation(evt: dict) -> str:
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"""Self-contained re-injection for an async-delegation completion: the FULL
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original task source (goal, context, toolsets, role, model), dispatch time, status
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and result, so an agent deep in unrelated context can act on it or re-dispatch."""
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deleg_id = evt.get("delegation_id", "unknown")
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completed_at = evt.get("completed_at") or time.time()
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if evt.get("task_failure_notice"):
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return _format_task_failure_notice(evt, deleg_id)
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if evt.get("is_batch") or isinstance(evt.get("results"), list):
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return _format_batch_delegation(evt, deleg_id, completed_at)
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status, summary, error = evt.get("status") or "completed", evt.get("summary"), evt.get("error")
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truncated = _is_truncated(evt)
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lines = _preamble(
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evt,
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f"[ASYNC DELEGATION COMPLETE — {deleg_id}]",
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"A background subagent you dispatched earlier has finished. You may "
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"have moved on since dispatching it; the full task source is below so "
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"you can act on the result or re-dispatch if things have changed.",
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completed_at, with_goal=True)
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lines += _notice_lines([evt]) + [
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f"Status: {status} API calls: {evt.get('api_calls', 0)} Duration: {evt.get('duration_seconds', '?')}s"
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+ (" [TRUNCATED: hit max_iterations — work may be incomplete]" if truncated else ""),
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"--- RESULT ---"]
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if status in _DONE and summary:
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if truncated:
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lines.append(_TRUNCATED_SUMMARY_NOTE)
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lines.append(summary)
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else:
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if status == "interrupted":
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lines.append("The subagent was interrupted before completing" + (f": {error}" if error else "."))
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else: # error / timeout / failed / unknown (owner died)
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lines.append(
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f"The subagent did not complete successfully (status={status})." + (f"\n{error}" if error else ""))
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lines += _recovery_lines(evt)
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if summary:
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lines += ["Partial output:", summary]
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return "\n".join(lines)
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def async_delegation_display_text(evt: dict) -> str:
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"""Compact UI title; the separate model notification retains all task evidence."""
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raw_results = evt.get("results")
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results = [r for r in raw_results if isinstance(r, dict)] if isinstance(raw_results, list) else []
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results = results or [evt]
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goals = evt.get("goals") or []
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labels, titles = [], []
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status_labels = {"failed": "Failed", "error": "Failed", "cancelled": "Cancelled",
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"interrupted": "Interrupted", "timeout": "Timed Out", "stalled": "Stalled",
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"unknown": "Unknown", "rejected": "Failed"}
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for result in results:
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status = result.get("status") or ("failed" if result.get("error") else "completed")
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label = ("Incomplete" if _is_truncated(result) else "Completed") if status in _DONE else (
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status_labels.get(status, "Incomplete"))
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labels.append(label)
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index = result.get("task_index", 0)
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goal = goals[index] if 0 <= index < len(goals) else result.get("goal", "")
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titles.append(" ".join(str(goal or "Background task").split()))
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if len(results) == 1:
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return f"Subagent Task {labels[0]}: {titles[0]}"
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outcome = labels[0] if len(set(labels)) == 1 else "Finished with Issues"
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title = " ".join(str(evt.get("group") or "").split()) or "; ".join(titles)
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return f"Subagent Tasks {outcome}: {title} ({len(results)} tasks)"
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PROCESS_COMPLETE_DISPLAY_KIND = "process_complete"
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def _short_command(command) -> str:
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cmd = " ".join(str(command or "").split())
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return cmd[:77] + "..." if len(cmd) > 80 else cmd
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def process_completion_display_text(events: list) -> str:
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"""Compact UI title for one or more process completions; the model text keeps the full output."""
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if len(events) != 1:
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return f"{len(events)} Background Processes Finished"
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evt = events[0]
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reason, exit_code = evt.get("completion_reason") or "exited", evt.get("exit_code", "?")
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if reason == "killed":
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outcome = "Terminated"
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elif reason in _REASON_STATUS:
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outcome = "Lost" if reason == "lost" else "Failed to Start"
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else:
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outcome = "Finished" if exit_code == 0 else "Failed"
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cmd = _short_command(evt.get("command"))
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detail = f" (exit {exit_code})" if reason not in ("killed", *_REASON_STATUS) and exit_code != 0 else ""
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return f"Background Process {outcome}{detail}: {cmd}" if cmd else f"Background Process {outcome}{detail}"
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class TimelineNotification(str):
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"""Queued model text that stays string-compatible, plus the display kind and compact human
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title the surface paints instead of the raw notification wall."""
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display_text: str
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display_kind: str
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notification_category: str
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def __new__(cls, text: str, display_text: str, display_kind: str, notification_category: str = "result"):
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instance = super().__new__(cls, text)
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instance.display_text = display_text
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instance.display_kind = display_kind
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instance.notification_category = notification_category
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return instance
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@classmethod
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def for_delegation(cls, text: str, event: dict) -> "TimelineNotification":
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from agent.notification_presentation import diagnostic_process_event
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return cls(text, async_delegation_display_text(event), "async_delegation_complete",
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"diagnostic" if diagnostic_process_event(event) else "result")
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def _delegation_attribution_line(evt: dict) -> "str | None":
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"""One-line provenance for a subagent-owned process event, else None. Such a process
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outlives the child and lands in the PARENT conversation, which would otherwise see an
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anonymous output wall. Keyed on ``owner_task_id`` — ``task_id`` may be the session key."""
|
|
task_id = str(evt.get("owner_task_id") or evt.get("task_id") or "")
|
|
if not task_id.startswith("sa-"):
|
|
return None
|
|
info = None
|
|
with suppress(Exception):
|
|
from tools.delegate_tool import get_subagent_attribution
|
|
info = get_subagent_attribution(task_id)
|
|
if not info:
|
|
# Registry entry aged out — still attribute generically, not anonymously.
|
|
return f"Started by subagent {task_id} (delegate_task)."
|
|
goal, deleg = str(info.get("goal") or "").strip(), info.get("delegation_id")
|
|
goal = goal[:117] + "..." if len(goal) > 120 else goal
|
|
return (f"Started by subagent {task_id}" + (f" of delegation {deleg}" if deleg else "") + "."
|
|
+ (f' Task: "{goal}"' if goal else ""))
|
|
|
|
|
|
def _completion_status(evt: dict) -> str:
|
|
reason = evt.get("completion_reason") or "exited"
|
|
if reason == "killed":
|
|
return f"terminated by {evt.get('termination_source') or 'Hermes'}"
|
|
return _REASON_STATUS.get(reason) or ("completed normally" if evt.get("exit_code", "?") == 0 else "exited")
|
|
|
|
|
|
def format_process_notification(evt: dict) -> "str | None":
|
|
"""Format a completion_queue event into an ``[IMPORTANT: ...]`` message."""
|
|
evt_type = evt.get("type", "completion")
|
|
# watch_disabled and overflow events carry their own human-readable `message`;
|
|
# otherwise overflow events would fall through to the completion formatter as a
|
|
# phantom "process exited (exit code ?)".
|
|
if evt_type in ("watch_disabled", "watch_overflow_tripped", "watch_overflow_released"):
|
|
return f"[IMPORTANT: {evt.get('message', '')}]"
|
|
if evt_type == "async_delegation":
|
|
return _format_async_delegation(evt)
|
|
_sid, _cmd = evt.get("session_id", "unknown"), evt.get("command", "unknown")
|
|
_attribution = _delegation_attribution_line(evt)
|
|
if evt.get("handoff_note"):
|
|
_attribution = f"Handed off to you by a subagent before it finished. Purpose: {evt['handoff_note']}"
|
|
attribution = f"{_attribution}\n" if _attribution else ""
|
|
if evt_type == "heartbeat":
|
|
_out = evt.get("output") or "(no new output since the last heartbeat)"
|
|
return (
|
|
f"[Background process {_sid} heartbeat #{evt.get('seq', '?')} — still running after "
|
|
f"{_format_age(float(evt.get('elapsed') or 0))} (next in {evt.get('interval', '?')}s; "
|
|
f"you will also be told when it exits).\n"
|
|
f"{attribution}Command: {_cmd}\nOutput since last heartbeat:\n{_out}]")
|
|
if evt_type == "watch_match":
|
|
_sup = evt.get("suppressed", 0)
|
|
return (
|
|
f"[IMPORTANT: Background process {_sid} matched watch pattern \"{evt.get('pattern', '?')}\".\n"
|
|
f"{attribution}Command: {_cmd}\nMatched output:\n{evt.get('output', '')}"
|
|
+ (f"\n({_sup} earlier matches were suppressed by rate limit)" if _sup else "") + "]")
|
|
_exit = evt.get("exit_code", "?")
|
|
_out = evt.get("output", "")
|
|
_signal = ", SIGTERM" if _exit in {-15, 143, "-15", "143"} else ""
|
|
# A subagent-owned process's full output belongs in the child's transcript, not as
|
|
# a raw wall in the parent — trim hard but keep enough tail to recognise failures.
|
|
if _attribution and isinstance(_out, str) and len(_out) > 600:
|
|
_out = (
|
|
"...(output trimmed — subagent-owned process; see the "
|
|
"delegation's live transcript for full output)\n"
|
|
+ _out[-600:])
|
|
elif evt.get("output_cut"):
|
|
# Say so where the output is the payload (a teammate's reply): a silent tail reads as whole.
|
|
_out = (f"...(first {evt['output_cut']} characters cut — process(action=\"log\", "
|
|
f"session_id=\"{_sid}\") has the full output)\n{_out}")
|
|
return (
|
|
f"[IMPORTANT: Background process {_sid} {_completion_status(evt)} (exit code {_exit}{_signal}).\n"
|
|
f"{attribution}Command: {_cmd}\nOutput:\n{_out}]")
|