refactor: split flat core into capability packages, layer the conversations service, English defaults for every model-facing text

This commit is contained in:
hh
2026-09-02 00:13:20 +02:00
parent 253bde1b11
commit 9aaddbed75
77 changed files with 2987 additions and 2944 deletions
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"""Conversations: rows, queue, seeds, turns, questions, closing, rotation, envelope."""
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"""Ending conversations: the distiller, the line cap, the master handover."""
from __future__ import annotations
import asyncio
import contextlib
import inspect
import logging
from dataclasses import dataclass
from datetime import UTC, datetime, timedelta
from typing import TYPE_CHECKING, Any, cast
from beaver_gateway.conversations.distill import (
Digest,
DistillContext,
LineCap,
append_index,
check_digest,
find_digest,
index_line,
trim_summary,
written_paths,
)
from beaver_gateway.conversations.questions import Questions
from beaver_gateway.conversations.state import aware
from beaver_gateway.conversations.texts import NewDayContext
if TYPE_CHECKING:
from beaver_gateway.conversations.rotation import HandoutContext
from beaver_gateway.storage.models import Conversation, InjectQueueItem
__all__ = ["Closing", "DistillResult"]
_log = logging.getLogger(__name__)
CLOSE_WAIT = 0.25
CLOSE_TRIES = 40
CAP_TRIES = 3
@dataclass(frozen=True, slots=True)
class DistillResult:
conversation: Conversation
fork: Conversation
text: str
digest: Digest | None
error: str | None
trimmed: bool
class Closing(Questions):
async def close(self, conv: Conversation) -> Conversation:
row = await self.set_status(conv, "closed")
with contextlib.suppress(LookupError):
await self._backend(conv.agent_name).close(conv.external_id)
return row
async def request_close(self, conv: Conversation) -> Conversation:
"""``close_chat`` from inside a turn: the chat closes once the turn ends."""
if conv.kind != "deep":
msg = f"only deep chats close this way, {conv.external_id} is {conv.kind}"
raise ValueError(msg)
return await self.set_flags(conv, {"close_requested": True})
async def idle(
self,
*,
kind: str,
days: int,
since: datetime | None = None,
limit: int | None = None,
) -> list[Conversation]:
"""Open conversations of ``kind`` with a session, quiet for ``days``."""
now = datetime.now(UTC)
cutoff = now - timedelta(days=days)
out: list[tuple[datetime, Conversation]] = []
for conv in await self.find(status="open", kind=kind, limit=10_000):
if conv.session_id is None:
continue
last = aware(conv.last_activity_at or conv.created_at)
if last > cutoff or (since is not None and last < since):
continue
out.append((last, conv))
out.sort(key=lambda pair: pair[0])
rows = [conv for _, conv in out]
return rows[:limit] if limit is not None else rows
async def distill(
self, conv: Conversation, *, reason: str = "api"
) -> DistillResult:
"""Fork under the distiller: digest checked and indexed, merge to the master."""
if self._distiller is None:
msg = "no distiller configured (Gateway(distiller=...))"
raise RuntimeError(msg)
if conv.kind != "deep":
msg = f"only deep chats are distilled, {conv.external_id} is {conv.kind}"
raise ValueError(msg)
row = await self.get_row(cast("int", conv.id)) or conv
if row.status != "open":
msg = f"conversation {row.external_id} is {row.status}"
raise ValueError(msg)
if await self.busy(row):
msg = f"conversation {row.external_id} is busy"
raise RuntimeError(msg)
memory = bool(row.flags.get("memory", True))
chat_name = await self.chat_name(row)
ctx = DistillContext(
conversation=row,
title=await self.implied_title(row),
source=await self.window_of(row),
chat_name=chat_name,
memory=memory,
reason=reason,
day=datetime.now(UTC).astimezone().date(),
)
prompt = await self._distill_prompt(ctx)
started = datetime.now(UTC)
self._bus.publish(
"distill.start",
conversation_id=row.external_id,
reason=reason,
memory=memory,
)
result = await self.fork(
row,
prompt,
strip_tools=True,
agent=self._distiller.agent,
title=f"digest: {chat_name}",
)
text, trimmed = trim_summary(result.text)
digest: Digest | None = None
error: str | None = None
if memory:
written = written_paths(result.capture.synthesized_messages)
path = find_digest(self._distiller, since=started, written=written)
if path is None:
error = self._texts.digest_missing
else:
checked = check_digest(path, self._distiller)
if isinstance(checked, str):
error = f"{path.name}: {checked}"
else:
digest = checked
append_index(self._distiller, index_line(digest, chat_name))
if error is not None:
_log.warning("distill of %s: %s", row.external_id, error)
master = await self.open_master()
if master is not None and text:
note = self._texts.closed.format(
chat=chat_name,
digest=(
self._texts.closed_digest.format(digest=digest.path.stem)
if digest
else ""
),
text=text,
)
await self.inject(master, note, urgency="normal", origin="digest")
await self.close(row)
row = await self.set_flags(
row,
{
"close_requested": None,
"closed_reason": reason,
"digest": str(digest.path) if digest else None,
"digest_error": error,
},
)
self._bus.publish(
"conversation.distilled",
conversation_id=row.external_id,
fork=result.conversation.external_id,
reason=reason,
memory=memory,
digest=str(digest.path) if digest else None,
error=error,
text=text,
trimmed=trimmed,
master=master.external_id if master is not None else None,
)
return DistillResult(
conversation=row,
fork=result.conversation,
text=text,
digest=digest,
error=error,
trimmed=trimmed,
)
async def _distill_prompt(self, ctx: DistillContext) -> str:
source = self._texts.distill
if source is None:
template = (
self._texts.distill_prompt
if ctx.memory
else self._texts.distill_prompt_no_memory
)
return template.format(
chat=ctx.chat_name, reason=ctx.reason, day=ctx.day.isoformat()
)
produced: Any = source(ctx)
return await produced if inspect.isawaitable(produced) else produced
async def _close_after_turn(self, conv: Conversation) -> None:
for _ in range(CLOSE_TRIES):
if await self.busy(conv):
await asyncio.sleep(CLOSE_WAIT)
continue
try:
await self.distill(conv, reason="close_chat")
except RuntimeError as exc:
_log.info("closing %s: %s, retrying", conv.external_id, exc)
await asyncio.sleep(CLOSE_WAIT)
continue
except Exception: # noqa: BLE001
_log.exception("closing %s after its turn failed", conv.external_id)
return
_log.warning("closing %s: still busy, giving up", conv.external_id)
async def before_turn(self, conv: Conversation) -> str | None:
cap = LineCap.from_flags(conv.flags.get("line_cap"))
if cap is None:
return None
try:
return cap.path.read_text(encoding="utf-8") if cap.path.exists() else ""
except OSError:
_log.exception("line cap: cannot read %s", cap.path)
return None
async def after_turn(self, conv: Conversation, before: str | None) -> None:
row = await self.get_row(cast("int", conv.id))
if row is None:
return
if row.kind == "deep" and row.flags.get("close_requested"):
self._track(asyncio.create_task(self._close_after_turn(row)))
cap = LineCap.from_flags(row.flags.get("line_cap"))
if cap is not None and before is not None:
await self._enforce_cap(row, cap, before)
async def _enforce_cap(self, conv: Conversation, cap: LineCap, before: str) -> None:
if not cap.path.exists():
return
after = cap.path.read_text(encoding="utf-8")
lines = sum(1 for line in after.splitlines() if line.strip())
if lines <= cap.max_lines:
return
if before:
cap.path.write_text(before, encoding="utf-8")
else:
cap.path.unlink()
attempts = int(conv.flags.get("line_cap_attempts", 0) or 0) + 1
await self.set_flags(conv, {"line_cap_attempts": attempts})
self._bus.publish(
"line_cap.bounced",
conversation_id=conv.external_id,
path=str(cap.path),
lines=lines,
max_lines=cap.max_lines,
attempt=attempts,
)
_log.warning(
"line cap: %s came back with %d lines (cap %d), restored; attempt %d",
cap.path,
lines,
cap.max_lines,
attempts,
)
if attempts > CAP_TRIES:
return
await self.inject(
conv,
self._texts.too_long.format(
name=cap.path.name, lines=lines, max_lines=cap.max_lines
),
urgency="urgent",
origin="cap",
interrupt=False,
)
async def handout(self, conv: Conversation, ctx: HandoutContext) -> str:
"""The closing master's last turn."""
source = self._texts.handout
if isinstance(source, str):
prompt = source.format(day=ctx.day.isoformat(), reason=ctx.reason)
else:
produced: Any = source(ctx)
prompt = await produced if inspect.isawaitable(produced) else produced
self._bus.publish(
"handout.start", conversation_id=conv.external_id, day=ctx.day.isoformat()
)
try:
text, _ = await self.run_text_turn(conv, prompt, origin="handout")
except Exception: # noqa: BLE001
_log.exception("handout turn on %s failed", conv.external_id)
text = ""
self._bus.publish(
"handout.end",
conversation_id=conv.external_id,
day=ctx.day.isoformat(),
text=text[:2000],
)
return text
async def new_day(
self, conv: Conversation, *, reason: str = "night", moved: int = 0
) -> InjectQueueItem:
"""The new master's first inject."""
ctx = NewDayContext(
day=datetime.now(UTC).astimezone().date(), reason=reason, moved=moved
)
source = self._texts.new_day
if isinstance(source, str):
text = source.format(day=ctx.day.isoformat(), reason=ctx.reason)
else:
produced: Any = source(ctx)
text = await produced if inspect.isawaitable(produced) else produced
if moved:
text += self._texts.moved_injects.format(moved=moved)
return await self.inject(
conv, text, urgency="urgent", origin="rotation", interrupt=False
)
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"""Closing a deep chat: the digest, the index, the file line cap (§6.4, §8.4).
The gateway knows no path by itself (§0.8): ``Distiller`` from ``config.py``
names the agent, says where digests land and where the index lives, and
the distiller writes the file on its own. What the gateway does is check that a file
with a valid frontmatter appeared under ``Distiller.dir`` during the fork
turn, put one line into the index, and cap the merge text at
``SUMMARY_LINES``. ``LineCap`` is the same idea for a file a job rewrites
(``состояние.md``): a result longer than the cap is bounced - the file
goes back to what it was and the job is told to shorten.
"""
from __future__ import annotations
from dataclasses import dataclass
from datetime import date, datetime
from pathlib import Path
from typing import TYPE_CHECKING, Any
import frontmatter
if TYPE_CHECKING:
from collections.abc import Iterable, Sequence
from beaver_gateway.storage.models import Conversation
__all__ = [
"SUMMARY_LINES",
"Digest",
"DistillContext",
"Distiller",
"LineCap",
"append_index",
"check_digest",
"find_digest",
"index_line",
"trim_summary",
"written_paths",
]
SUMMARY_LINES = 5
"""A merge into the master is at most this many lines (§6.4)."""
@dataclass(frozen=True, slots=True)
class Distiller:
"""Who closes deep chats, where digests land, where the index lives."""
agent: str
dir: Path
index: Path
type: str = "digest"
"""Value the ``type`` frontmatter key must carry."""
index_header: str = "# index\n\none line per digest: chat → its digest.\n"
@dataclass(frozen=True, slots=True)
class DistillContext:
"""What the setup's distill prompt is built from."""
conversation: Conversation
title: str | None
source: str | None
"""The window the chat lives in (a vault-relative path for markdown)."""
chat_name: str
"""What a ``[[wikilink]]`` to the chat is called."""
memory: bool
reason: str
day: date
@dataclass(frozen=True, slots=True)
class Digest:
path: Path
source: str
date: date
@dataclass(frozen=True, slots=True)
class LineCap:
"""A file a job rewrites may not exceed ``max_lines`` after its turn."""
path: Path
max_lines: int
def as_flags(self) -> dict[str, Any]:
return {"path": str(self.path), "max_lines": self.max_lines}
@classmethod
def from_flags(cls, value: Any) -> LineCap | None:
if not isinstance(value, dict):
return None
path, max_lines = value.get("path"), value.get("max_lines")
if not isinstance(path, str) or not isinstance(max_lines, int):
return None
return cls(path=Path(path), max_lines=max_lines)
def written_paths(messages: Iterable[dict[str, Any]]) -> list[Path]:
"""Paths the turn's ``Write``/``Edit`` calls targeted, in order."""
out: list[Path] = []
for message in messages:
content = message.get("content")
if not isinstance(content, list):
continue
for block in content:
if not isinstance(block, dict) or block.get("type") != "tool_use":
continue
if block.get("name") not in ("Write", "Edit", "MultiEdit"):
continue
target = (block.get("input") or {}).get("file_path")
if isinstance(target, str) and target:
out.append(Path(target))
return out
def find_digest(
digests: Distiller, *, since: datetime, written: Sequence[Path] = ()
) -> Path | None:
"""The digest the fork turn produced.
A written path under ``dir`` first, otherwise the newest file there
modified since ``since``.
"""
root = digests.dir.resolve()
for path in reversed(list(written)):
candidate = path if path.is_absolute() else digests.dir / path
try:
inside = candidate.resolve().relative_to(root)
except (OSError, ValueError):
continue
if (digests.dir / inside).is_file():
return digests.dir / inside
if not digests.dir.is_dir():
return None
stamp = since.timestamp() - 1
fresh = [
p
for p in digests.dir.glob("*.md")
if p.is_file() and p.stat().st_mtime >= stamp
]
return max(fresh, key=lambda p: p.stat().st_mtime) if fresh else None
def check_digest(path: Path, digests: Distiller) -> Digest | str:
"""The digest's frontmatter parsed, or why it is not a digest."""
try:
post = frontmatter.load(str(path))
except (OSError, ValueError) as exc:
return f"unreadable: {exc}"
meta = post.metadata
if meta.get("type") != digests.type:
return f"`type` must be `{digests.type}`, not {meta.get('type')!r}"
source = meta.get("source")
if not isinstance(source, str) or not source.strip():
return "`source` is empty"
when = meta.get("date")
if isinstance(when, datetime):
when = when.date()
elif isinstance(when, str):
try:
when = date.fromisoformat(when.strip())
except ValueError:
return f"`date` is not a date: {when!r}"
if not isinstance(when, date):
return "`date` is missing"
if not post.content.strip():
return "empty body"
return Digest(path=path, source=source.strip(), date=when)
def index_line(digest: Digest, chat_name: str) -> str:
return f"- {digest.date.isoformat()} [[{chat_name}]] → [[{digest.path.stem}]]"
def append_index(digests: Distiller, line: str) -> None:
index = digests.index
text = index.read_text(encoding="utf-8") if index.exists() else ""
if line in text.splitlines():
return
if not text:
text = digests.index_header
if not text.endswith("\n"):
text += "\n"
index.parent.mkdir(parents=True, exist_ok=True)
index.write_text(text + line + "\n", encoding="utf-8")
def trim_summary(text: str, limit: int = SUMMARY_LINES) -> tuple[str, bool]:
"""The merge text cut to ``limit`` non-empty lines; ``True`` if it was."""
lines = [line.rstrip() for line in text.strip().splitlines() if line.strip()]
if len(lines) <= limit:
return "\n".join(lines), False
return "\n".join(lines[:limit]), True
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"""The envelope: a background block under the user's text - clock, changes, recall."""
from __future__ import annotations
import logging
from dataclasses import dataclass, field
from datetime import UTC, datetime
from typing import TYPE_CHECKING
from zoneinfo import ZoneInfo
from beaver_gateway.conversations.texts import EnvelopeTexts
if TYPE_CHECKING:
from collections.abc import Callable, Sequence
from beaver_gateway.vault.watch import Change, VaultWatch
__all__ = ["Envelope", "RecallContext", "render"]
_log = logging.getLogger(__name__)
@dataclass(frozen=True, slots=True)
class RecallContext:
text: str
kind: str
now: datetime
@dataclass(slots=True)
class Envelope:
watch: VaultWatch | None = None
tz: str = "UTC"
max_lines: int = 120
per_file: int = 30
names_only_within: float = 600.0
last_at: datetime | None = None
recall: Callable[[RecallContext], str | None] | None = None
"""Setup-side lookup on the user's text; its lines go under the change block."""
texts: EnvelopeTexts = field(default_factory=EnvelopeTexts)
def build(
self, *, now: datetime | None = None, text: str = "", kind: str = "master"
) -> str:
now = now or datetime.now(UTC)
changes = self.watch.take() if self.watch is not None else []
names_only = (
self.last_at is not None
and (now - self.last_at).total_seconds() < self.names_only_within
)
out = render(
now=now,
tz=self.tz,
changes=changes,
since=self.last_at,
names_only=names_only,
max_lines=self.max_lines,
per_file=self.per_file,
texts=self.texts,
)
self.last_at = now
block = self.recall_block(text=text, kind=kind, now=now)
return f"{out}\n{block}" if block else out
def recall_only(
self, *, text: str, kind: str, now: datetime | None = None
) -> str | None:
block = self.recall_block(text=text, kind=kind, now=now or datetime.now(UTC))
return f"{self.texts.header}\n{block}" if block else None
def recall_block(self, *, text: str, kind: str, now: datetime) -> str | None:
if self.recall is None or not text.strip():
return None
try:
block = self.recall(RecallContext(text=text, kind=kind, now=now))
except Exception: # noqa: BLE001
_log.exception("recall hook failed")
return None
return block.strip() or None if block else None
def render(
*,
now: datetime,
tz: str,
changes: Sequence[Change],
since: datetime | None,
names_only: bool,
max_lines: int = 120,
per_file: int = 30,
texts: EnvelopeTexts | None = None,
) -> str:
texts = texts or EnvelopeTexts()
zone = ZoneInfo(tz)
stamp = now.astimezone(zone)
lines = [
texts.header,
texts.time.format(stamp=f"{stamp:%Y-%m-%d %H:%M}", zone=_zone_label(tz)),
]
ordered = sorted(changes, key=lambda c: (not c.full, c.path))
since_label = (
texts.since.format(time=f"{since.astimezone(zone):%H:%M}")
if since is not None
else texts.since_start
)
if ordered:
names = ", ".join(f"{c.path} (+{c.added_count})" for c in ordered)
lines.append(texts.changed.format(since=since_label, names=names))
if not names_only:
_append_diffs(
lines, ordered, max_lines=max_lines, per_file=per_file, texts=texts
)
return "\n".join(lines[:max_lines])
def _append_diffs(
lines: list[str],
changes: Sequence[Change],
*,
max_lines: int,
per_file: int,
texts: EnvelopeTexts,
) -> None:
budget = max_lines - len(lines) - 1
for change in changes:
if not change.full or not change.added:
continue
if budget < 3:
lines.append(texts.truncated)
return
shown = change.added[: min(per_file, budget - 2)]
lines.append(texts.file_header.format(path=change.path))
lines.extend(f"+ {line}" for line in shown)
budget -= 1 + len(shown)
if len(change.added) > len(shown):
lines.append(texts.more_lines.format(count=len(change.added) - len(shown)))
budget -= 1
def _zone_label(tz: str) -> str:
return tz.rsplit("/", 1)[-1].replace("_", " ")
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"""Persisted per-conversation queue, ``urgent > user > wake > normal`` (§3.4).
One ``ClaudeSDKClient`` runs one turn at a time, so ordering has to happen
before the client: the rows here are the queue, ``core/conversations``
runs one worker per conversation over them. ``urgent`` cuts a running
turn, ``user`` is the human, ``wake`` starts a turn as soon as the
conversation is idle and takes the queued normals with it, ``normal``
waits for the batching window or rides with the next turn. A row that is
still ``running`` when the gateway starts was cut by a restart; it is
flagged ``interrupted`` and never re-run.
"""
from __future__ import annotations
from dataclasses import dataclass
from datetime import UTC, datetime
from typing import TYPE_CHECKING, Literal, cast
from sqlalchemy import func
from sqlmodel import col, select
from beaver_gateway.storage.models import InjectQueueItem
if TYPE_CHECKING:
from collections.abc import Iterable, Sequence
from beaver_gateway.storage.db import Database
from beaver_gateway.storage.models import Conversation
__all__ = [
"PRIORITY_RANK",
"URGENCY",
"InjectContext",
"InjectQueue",
"Priority",
"inject_header",
]
Priority = Literal["urgent", "user", "wake", "normal"]
PRIORITY_RANK: dict[str, int] = {"urgent": 0, "user": 1, "wake": 2, "normal": 3}
URGENCY: tuple[Priority, ...] = ("normal", "wake", "urgent")
"""What the API and the tools accept for ``urgency``: every priority but ``user``."""
INTERRUPTED_TURN = (
"[this inject cut the previous turn: the «Request interrupted» above is "
"an interruption, not a refused tool call]"
)
@dataclass(frozen=True, slots=True)
class InjectContext:
"""What a header renderer knows about one queued inject."""
origin: str
priority: str
interrupted_turn: bool
def inject_header(ctx: InjectContext) -> str:
"""Default framing; a setup overrides it via ``ConversationTexts.inject_header``."""
head = f"[inject: {ctx.origin} - not the user, no reply needed]"
return f"{head}\n{INTERRUPTED_TURN}" if ctx.interrupted_turn else head
def context_of(item: InjectQueueItem) -> InjectContext:
return InjectContext(
origin=item.origin,
priority=item.priority,
interrupted_turn=bool(item.interrupted_turn),
)
class InjectQueue:
def __init__(self, db: Database) -> None:
self._db = db
async def push(
self, *, conversation_id: int, priority: Priority, origin: str, text: str
) -> InjectQueueItem:
if priority not in PRIORITY_RANK:
msg = f"unknown priority {priority!r}"
raise ValueError(msg)
row = InjectQueueItem(
conversation_id=conversation_id, priority=priority, origin=origin, text=text
)
async with self._db.session() as session:
session.add(row)
await session.commit()
await session.refresh(row)
return row
async def pending(self, conversation_id: int) -> list[InjectQueueItem]:
async with self._db.session() as session:
result = await session.exec(
select(InjectQueueItem)
.where(
InjectQueueItem.conversation_id == conversation_id,
InjectQueueItem.status == "queued",
)
.order_by(col(InjectQueueItem.created_at), col(InjectQueueItem.id))
)
rows = list(result.all())
rows.sort(key=lambda r: (PRIORITY_RANK.get(r.priority, 9), r.created_at))
return rows
async def conversations_with_pending(self) -> list[int]:
async with self._db.session() as session:
result = await session.exec(
select(InjectQueueItem.conversation_id)
.where(InjectQueueItem.status == "queued")
.distinct()
)
return list(result.all())
async def start(self, items: Iterable[InjectQueueItem], turn_id: str) -> None:
await self._mark(items, status="running", turn_id=turn_id, delivered=True)
async def finish(
self, items: Iterable[InjectQueueItem], status: str = "done"
) -> None:
await self._mark(items, status=status)
async def mark_interrupting(self, item: InjectQueueItem) -> None:
item.interrupted_turn = True
async with self._db.session() as session:
row = await session.get(InjectQueueItem, item.id)
if row is not None:
row.interrupted_turn = True
session.add(row)
await session.commit()
async def interrupted(self) -> Sequence[InjectQueueItem]:
async with self._db.session() as session:
result = await session.exec(
select(InjectQueueItem).where(InjectQueueItem.status == "running")
)
rows = list(result.all())
for row in rows:
row.status = "interrupted"
session.add(row)
await session.commit()
return rows
async def move(
self, source: Conversation, target: Conversation, *, priority: Priority
) -> int:
"""Re-home queued items of one priority (rotation carries normal over)."""
async with self._db.session() as session:
result = await session.exec(
select(InjectQueueItem).where(
InjectQueueItem.conversation_id == source.id,
InjectQueueItem.status == "queued",
InjectQueueItem.priority == priority,
)
)
rows = list(result.all())
for row in rows:
row.conversation_id = cast("int", target.id)
session.add(row)
await session.commit()
return len(rows)
async def recent(
self, conversation_id: int, *, limit: int = 50
) -> list[InjectQueueItem]:
async with self._db.session() as session:
result = await session.exec(
select(InjectQueueItem)
.where(InjectQueueItem.conversation_id == conversation_id)
.order_by(col(InjectQueueItem.id).desc())
.limit(limit)
)
return list(result.all())
async def latest(
self, conversation_ids: Iterable[int]
) -> dict[int, InjectQueueItem]:
ids = list(conversation_ids)
if not ids:
return {}
newest = (
select(func.max(InjectQueueItem.id))
.where(col(InjectQueueItem.conversation_id).in_(ids))
.group_by(col(InjectQueueItem.conversation_id))
)
async with self._db.session() as session:
result = await session.exec(
select(InjectQueueItem).where(col(InjectQueueItem.id).in_(newest))
)
return {row.conversation_id: row for row in result.all()}
async def _mark(
self,
items: Iterable[InjectQueueItem],
*,
status: str,
turn_id: str | None = None,
delivered: bool = False,
) -> None:
ids = [i.id for i in items if i.id is not None]
if not ids:
return
async with self._db.session() as session:
result = await session.exec(
select(InjectQueueItem).where(col(InjectQueueItem.id).in_(ids))
)
for row in result.all():
row.status = status
if turn_id is not None:
row.turn_id = turn_id
if delivered:
row.delivered_at = datetime.now(UTC)
session.add(row)
await session.commit()
+18
View File
@@ -0,0 +1,18 @@
"""Conversation kinds (§3.1) as one closed type for agents, frontends, service."""
from __future__ import annotations
from typing import Literal, get_args
__all__ = ["KINDS", "Kind", "as_kind"]
Kind = Literal["master", "branch", "deep", "job", "fork"]
KINDS: tuple[Kind, ...] = get_args(Kind)
def as_kind(value: str) -> Kind:
for kind in KINDS:
if value == kind:
return kind
msg = f"unknown conversation kind {value!r}"
raise ValueError(msg)
@@ -0,0 +1,116 @@
"""Putting words into a conversation: a message, an inject, ``say``, ``schedule``."""
from __future__ import annotations
import logging
from typing import TYPE_CHECKING, Any, cast
from beaver_gateway.conversations.turns import Turns
if TYPE_CHECKING:
from datetime import datetime
from beaver_gateway.conversations.injects import Priority
from beaver_gateway.storage.models import Conversation, InjectQueueItem
__all__ = ["Messaging"]
_log = logging.getLogger(__name__)
class Messaging(Turns):
async def post(
self, conv: Conversation, text: str, *, origin: str = "user"
) -> InjectQueueItem:
item = await self._queue.push(
conversation_id=cast("int", conv.id),
priority="user",
origin=origin,
text=text,
)
await self.touch_user(conv)
self._bus.publish(
"message.queued",
conversation_id=conv.external_id,
item=item.id,
origin=origin,
)
self._ensure_worker(cast("int", conv.id))
return item
async def inject(
self,
conv: Conversation,
text: str,
*,
urgency: Priority = "normal",
origin: str = "system",
interrupt: bool = True,
) -> InjectQueueItem:
if conv.kind == "master" and conv.status != "open":
live = await self.open_master()
if live is None:
_log.error(
"inject (%s) for closed master %s: no open master, it stays there",
origin,
conv.external_id,
)
else:
_log.info(
"inject (%s) for closed master %s goes to %s",
origin,
conv.external_id,
live.external_id,
)
conv = live
item = await self._queue.push(
conversation_id=cast("int", conv.id),
priority=urgency,
origin=origin,
text=text,
)
self._bus.publish(
"inject.queued",
conversation_id=conv.external_id,
item=item.id,
priority=urgency,
origin=origin,
)
if urgency == "urgent" and interrupt:
backend = self._backend(conv.agent_name)
if await backend.interrupt(conv.external_id):
_log.info(
"conversation %s: interrupted for urgent inject", conv.external_id
)
await self._queue.mark_interrupting(item)
self._ensure_worker(cast("int", conv.id))
return item
async def say(self, conv: Conversation, text: str) -> dict[str, Any]:
runner = self._runners.get(cast("int", conv.id))
_log.info("say[%s]: %s", conv.external_id, text[:200])
return self._bus.publish(
"say",
conversation_id=conv.external_id,
text=text,
turn_id=runner.turn_id if runner is not None else None,
)
async def schedule(
self,
conv: Conversation,
at: str,
text: str,
*,
urgency: Priority = "wake",
dedupe_key: str | None = None,
) -> tuple[int | None, datetime]:
if self.scheduler is None:
msg = "no scheduler; `schedule` is unavailable"
raise RuntimeError(msg)
return await self.scheduler.schedule(
conv, at, text, urgency=urgency, dedupe_key=dedupe_key
)
async def schedules(self, conv: Conversation | None = None) -> list[dict[str, Any]]:
return await self.scheduler.scheduled(conv) if self.scheduler else []
@@ -0,0 +1,85 @@
"""``AskUserQuestion`` from inside a turn: answered or timed out."""
from __future__ import annotations
import asyncio
import contextlib
from typing import TYPE_CHECKING, Any, cast
from uuid import uuid4
from beaver_gateway.conversations.spawning import Spawning
from beaver_gateway.conversations.state import Question
if TYPE_CHECKING:
from beaver_gateway.storage.models import Conversation
__all__ = ["Questions"]
class Questions(Spawning):
async def ask(self, key: str, payload: dict[str, Any]) -> str | None:
"""Show the question and wait; ``None`` when nobody answered in time."""
conv = await self.get(key)
if conv is None:
return None
runner = self._runners.get(cast("int", conv.id))
question_id = f"q_{uuid4().hex[:10]}"
pending = Question(
conversation_id=key,
turn_id=runner.turn_id if runner is not None else None,
questions=list(payload.get("questions") or []),
answer=asyncio.get_running_loop().create_future(),
)
self._questions[question_id] = pending
await self._set_pending_question(conv, value=True)
self._bus.publish(
"question",
conversation_id=key,
turn_id=pending.turn_id,
question_id=question_id,
questions=pending.questions,
timeout=self._question_timeout,
)
try:
async with asyncio.timeout(self._question_timeout):
answer = await pending.answer
except TimeoutError:
self._bus.publish(
"question.timeout",
conversation_id=key,
turn_id=pending.turn_id,
question_id=question_id,
)
return None
finally:
self._questions.pop(question_id, None)
await self._set_pending_question(conv, value=False)
self._bus.publish(
"question.answered",
conversation_id=key,
turn_id=pending.turn_id,
question_id=question_id,
answer=answer,
)
return answer
def answer(self, question_id: str, answer: str) -> bool:
pending = self._questions.get(question_id)
if pending is None or pending.answer.done():
return False
pending.answer.set_result(answer)
return True
def answer_text(self, answer: str | None) -> str:
if answer is None:
return self._texts.unanswered.format(
minutes=round(self._question_timeout / 60)
)
return self._texts.answered.format(answer=answer)
async def _set_pending_question(self, conv: Conversation, *, value: bool) -> None:
async def apply(row: Conversation) -> None:
row.pending_question = value
with contextlib.suppress(LookupError):
await self._update(conv, apply)
@@ -0,0 +1,131 @@
"""Master rotation (§4.5, §8.1, §8.3).
One logical master thread, many physical sessions: when the policy says
so, a new master is spawned and takes over the window atomically, the old
one writes its handout as its last turn, closes, its finished branches get
marked in their windows, its queued normal injects move over, and the new
one receives "new day". Silence is measured by the user's messages only -
injects never extend a day.
"""
from __future__ import annotations
import logging
from dataclasses import dataclass
from datetime import UTC, date, datetime, timedelta
from typing import TYPE_CHECKING
from zoneinfo import ZoneInfo
if TYPE_CHECKING:
from beaver_gateway.conversations.service import Conversations
from beaver_gateway.storage.models import Conversation
__all__ = ["HandoutContext", "Rotation", "RotationPolicy"]
_log = logging.getLogger("beaver_gateway.conversations.rotation")
@dataclass(frozen=True, slots=True)
class RotationPolicy:
tz: str = "UTC"
hour: int = 4
night_silence: timedelta = timedelta(hours=3)
max_age: timedelta = timedelta(hours=36)
short_silence: timedelta = timedelta(minutes=30)
max_context_tokens: int = 80_000
def reason(
self, master: Conversation, *, now: datetime, context_tokens: int
) -> str | None:
zone = ZoneInfo(self.tz)
created = _aware(master.created_at)
silence = now - _aware(master.last_user_activity_at or master.created_at)
boundary = now.astimezone(zone).replace(
hour=self.hour, minute=0, second=0, microsecond=0
)
if now.astimezone(zone) < boundary:
boundary -= timedelta(days=1)
if created < boundary and silence > self.night_silence:
return "night"
if now - created > self.max_age and silence > self.short_silence:
return "age"
if context_tokens > self.max_context_tokens and silence > self.short_silence:
return "context"
return None
def day_of(self, master: Conversation) -> date:
return _aware(master.created_at).astimezone(ZoneInfo(self.tz)).date()
@dataclass(frozen=True, slots=True)
class HandoutContext:
day: date
master: Conversation
reason: str
class Rotation:
def __init__(
self, conversations: Conversations, policy: RotationPolicy | None = None
) -> None:
self._conversations = conversations
self.policy = policy or RotationPolicy()
async def due(self, now: datetime | None = None) -> list[tuple[Conversation, str]]:
now = now or datetime.now(UTC)
out: list[tuple[Conversation, str]] = []
for master in await self._conversations.find(kind="master", status="open"):
tokens = await self._conversations.context_tokens(master)
reason = self.policy.reason(master, now=now, context_tokens=tokens)
if reason is not None:
out.append((master, reason))
return out
async def tick(self, now: datetime | None = None) -> list[Conversation]:
rotated: list[Conversation] = []
for master, reason in await self.due(now):
new = await self.rotate(master, reason)
if new is not None:
rotated.append(new)
return rotated
async def rotate(self, old: Conversation, reason: str) -> Conversation | None:
conversations = self._conversations
if await conversations.busy(old):
_log.info("rotation of %s skipped: busy", old.external_id)
return None
new = await conversations.spawn(
kind="master", agent=old.agent_name, seed="morning", origin="rotation"
)
day = self.policy.day_of(old)
_log.info(
"rotation (%s): %s -> %s, handout for %s",
reason,
old.external_id,
new.external_id,
day,
)
await conversations.handout(
old, HandoutContext(day=day, master=old, reason=reason)
)
await conversations.close(old)
for branch in await conversations.find(parent=old, limit=1000):
if branch.status == "open":
await conversations.reparent(branch, new)
elif not branch.running_turn:
await conversations.mark_closed(branch)
moved = await conversations.queue.move(old, new, priority="normal")
await conversations.new_day(new, reason=reason, moved=moved)
conversations.bus.publish(
"conversation.rotated",
conversation_id=new.external_id,
closed=old.external_id,
reason=reason,
handout_day=day.isoformat(),
moved=moved,
)
return new
def _aware(value: datetime) -> datetime:
return value if value.tzinfo is not None else value.replace(tzinfo=UTC)
+514
View File
@@ -0,0 +1,514 @@
"""The conversation rows: create, find, bind to windows, flags, status, history."""
from __future__ import annotations
import json
import logging
from datetime import UTC, datetime
from typing import TYPE_CHECKING, Any, cast
from uuid import uuid4
from sqlmodel import col, select
from beaver_gateway.backends.transcript import (
messages_from_entries,
render_messages,
text_of,
)
from beaver_gateway.conversations.kinds import KINDS, Kind
from beaver_gateway.conversations.state import State, iso
from beaver_gateway.frontends.markdown.history import load_messages
from beaver_gateway.storage.models import (
Conversation,
ConversationBinding,
ConversationMessage,
RateLimit,
Usage,
)
if TYPE_CHECKING:
from collections.abc import Awaitable, Callable, Iterable
from beaver_gateway.frontends.base import Frontend
__all__ = [
"MASTER_ALIAS",
"PARENT_ALIAS",
"STATUSES",
"TITLE_MAX",
"Rows",
"context_of",
"implied_title",
]
_log = logging.getLogger(__name__)
MASTER_ALIAS = "master"
PARENT_ALIAS = "parent"
STATUSES = ("open", "merged", "closed", "archived")
TITLE_MAX = 80
class Rows(State):
async def create(
self,
*,
kind: Kind,
agent: str,
parent: Conversation | None = None,
title: str | None = None,
origin: str = "api",
session_id: str | None = None,
flags: dict[str, Any] | None = None,
) -> Conversation:
if kind not in KINDS:
msg = f"unknown conversation kind {kind!r}"
raise ValueError(msg)
if not self._claude_agent(agent).serves(kind):
msg = f"agent {agent!r} does not serve kind {kind!r}"
raise ValueError(msg)
now = datetime.now(UTC)
row = Conversation(
frontend=origin,
external_id=str(uuid4()),
agent_name=agent,
kind=kind,
parent_id=parent.id if parent is not None else None,
title=title,
session_id=session_id,
flags=dict(flags or {}),
last_activity_at=now,
)
async with self._db.session() as session:
session.add(row)
await session.commit()
await session.refresh(row)
self._bus.publish("conversation.created", **self.public(row))
return row
async def get(self, public_id: str) -> Conversation | None:
async with self._db.session() as session:
result = await session.exec(
select(Conversation).where(Conversation.external_id == public_id)
)
return result.first()
async def get_row(self, row_id: int) -> Conversation | None:
async with self._db.session() as session:
return await session.get(Conversation, row_id)
async def resolve(
self, key: str, *, origin: Conversation | None = None
) -> Conversation | None:
"""By public id, or ``master`` / ``parent`` relative to ``origin``."""
key = key.strip()
if key == MASTER_ALIAS:
return await self.open_master()
if key == PARENT_ALIAS:
if origin is None or origin.parent_id is None:
return None
return await self.get_row(origin.parent_id)
return await self.get(key)
async def open_master(self) -> Conversation | None:
masters = await self.find(kind="master", status="open", limit=1)
return masters[0] if masters else None
async def find(
self,
*,
status: str | None = None,
kind: str | None = None,
parent: Conversation | None = None,
limit: int = 200,
) -> list[Conversation]:
stmt = select(Conversation).order_by(col(Conversation.id).desc()).limit(limit)
if status is not None:
stmt = stmt.where(Conversation.status == status)
if kind is not None:
stmt = stmt.where(Conversation.kind == kind)
if parent is not None:
stmt = stmt.where(Conversation.parent_id == parent.id)
async with self._db.session() as session:
return list((await session.exec(stmt)).all())
async def bindings(self, conv: Conversation) -> list[ConversationBinding]:
async with self._db.session() as session:
result = await session.exec(
select(ConversationBinding)
.where(ConversationBinding.conversation_id == conv.id)
.order_by(col(ConversationBinding.id))
)
return list(result.all())
async def bind(
self,
conv: Conversation,
*,
frontend: str,
external_id: str,
visible: bool = True,
) -> ConversationBinding:
if conv.kind not in self.frontend(frontend).kinds:
msg = f"frontend {frontend!r} does not show kind {conv.kind!r}"
raise ValueError(msg)
async with self._db.session() as session:
existing = list(
(
await session.exec(
select(ConversationBinding).where(
ConversationBinding.conversation_id == conv.id,
ConversationBinding.frontend == frontend,
)
)
).all()
)
row = next((b for b in existing if b.external_id == external_id), None)
if visible:
for other in existing:
if other is not row and other.visible:
other.visible = False
session.add(other)
same_window = await session.exec(
select(ConversationBinding).where(
ConversationBinding.frontend == frontend,
ConversationBinding.external_id == external_id,
ConversationBinding.conversation_id != conv.id,
col(ConversationBinding.visible).is_(True),
)
)
for other in same_window.all():
other.visible = False
session.add(other)
if row is None:
row = ConversationBinding(
conversation_id=cast("int", conv.id),
frontend=frontend,
external_id=external_id,
visible=visible,
)
else:
row.visible = visible
session.add(row)
await session.commit()
await session.refresh(row)
self._bus.publish(
"conversation.bound",
conversation_id=conv.external_id,
frontend=frontend,
external_id=external_id,
visible=visible,
)
return row
async def find_bound(
self, *, frontend: str, external_id: str
) -> Conversation | None:
async with self._db.session() as session:
result = await session.exec(
select(Conversation)
.join(
ConversationBinding,
col(ConversationBinding.conversation_id) == col(Conversation.id),
)
.where(
ConversationBinding.frontend == frontend,
ConversationBinding.external_id == external_id,
col(ConversationBinding.visible).is_(True),
)
.order_by(col(Conversation.id).desc())
)
return result.first()
async def last_binding(
self, *, frontend: str, kind: str
) -> ConversationBinding | None:
"""The window ``frontend`` last used for ``kind``; outlives a rotation."""
async with self._db.session() as session:
result = await session.exec(
select(ConversationBinding)
.join(
Conversation,
col(Conversation.id) == col(ConversationBinding.conversation_id),
)
.where(
ConversationBinding.frontend == frontend, Conversation.kind == kind
)
.order_by(col(ConversationBinding.id).desc())
)
return result.first()
async def window_of(self, conv: Conversation) -> str | None:
for binding in await self.bindings(conv):
if binding.visible:
return binding.external_id
return None
async def set_flags(
self, conv: Conversation, flags: dict[str, Any]
) -> Conversation:
async def apply(row: Conversation) -> None:
row.flags = {**row.flags, **flags}
return await self._update(conv, apply)
async def set_status(self, conv: Conversation, status: str) -> Conversation:
if status not in STATUSES:
msg = f"unknown status {status!r}"
raise ValueError(msg)
async def apply(row: Conversation) -> None:
row.status = status
return await self._update(conv, apply)
async def set_title(self, conv: Conversation, title: str) -> Conversation:
async def apply(row: Conversation) -> None:
row.title = title
return await self._update(conv, apply)
async def touch_user(self, conv: Conversation) -> Conversation:
async def apply(row: Conversation) -> None:
row.last_user_activity_at = datetime.now(UTC)
return await self._update(conv, apply)
async def reparent(self, conv: Conversation, parent: Conversation) -> Conversation:
async def apply(row: Conversation) -> None:
row.parent_id = parent.id
return await self._update(conv, apply)
async def _update(
self, conv: Conversation, apply: Callable[[Conversation], Awaitable[None]]
) -> Conversation:
async with self._db.session() as session:
row = await session.get(Conversation, conv.id)
if row is None:
msg = f"conversation {conv.external_id} vanished"
raise LookupError(msg)
await apply(row)
row.updated_at = datetime.now(UTC)
session.add(row)
await session.commit()
await session.refresh(row)
self._bus.publish("conversation.updated", **self.public(row))
return row
def public(self, conv: Conversation) -> dict[str, Any]:
return {
"id": conv.external_id,
"kind": conv.kind,
"agent": conv.agent_name,
"title": conv.title,
"status": conv.status,
"parent_row": conv.parent_id,
"session_id": conv.session_id,
"running_turn": conv.running_turn,
"pending_question": conv.pending_question,
"flags": conv.flags,
"origin": conv.frontend,
"created_at": iso(conv.created_at),
"last_user_activity_at": iso(conv.last_user_activity_at),
"last_activity_at": iso(conv.last_activity_at),
}
async def describe(self, conv: Conversation) -> dict[str, Any]:
out = self.public(conv)
out["title"] = await self.implied_title(conv)
parent = await self.get_row(conv.parent_id) if conv.parent_id else None
out["parent"] = parent.external_id if parent is not None else None
out["bindings"] = [
{"frontend": b.frontend, "external_id": b.external_id, "visible": b.visible}
for b in await self.bindings(conv)
]
live = self._pool.get(conv.external_id)
out["live"] = live is not None
out["busy"] = live.busy if live is not None else False
runner = self._runners.get(cast("int", conv.id))
out["turn"] = runner.snapshot() if runner is not None else None
pending = self.pending_question(conv.external_id)
out["question"] = (
{"id": pending[0], "questions": pending[1]} if pending else None
)
return out
def pending_question(self, key: str) -> tuple[str, list[dict[str, Any]]] | None:
for question_id, pending in self._questions.items():
if pending.conversation_id == key and not pending.answer.done():
return question_id, pending.questions
return None
async def rate_limits(self, *, limit: int = 100) -> list[RateLimit]:
async with self._db.session() as session:
result = await session.exec(
select(RateLimit).order_by(col(RateLimit.id).desc()).limit(limit)
)
return list(result.all())
async def context_tokens(self, conv: Conversation) -> int:
async with self._db.session() as session:
row = (
await session.exec(
select(Usage)
.where(Usage.conversation_id == conv.external_id)
.order_by(col(Usage.id).desc())
.limit(1)
)
).first()
return context_of(row)
async def usage_tokens(self, since: datetime) -> int:
async with self._db.session() as session:
rows = (
await session.exec(
select(Usage).where(
col(Usage.ts) >= since.astimezone(UTC).replace(tzinfo=None)
)
)
).all()
return sum(
r.input_tokens + r.output_tokens + r.cache_creation_tokens for r in rows
)
async def busy(self, conv: Conversation) -> bool:
row = await self.get_row(cast("int", conv.id)) or conv
if row.running_turn or row.pending_question:
return True
live = self._pool.get(row.external_id)
if live is not None and live.busy:
return True
pending = await self._queue.pending(cast("int", row.id))
return any(i.priority in ("user", "urgent", "wake") for i in pending)
@property
def frontends(self) -> list[Frontend]:
return list(self._frontends)
def frontend(self, name: str) -> Frontend:
for fe in self._frontends:
if fe.name == name:
return fe
msg = f"unknown frontend {name!r}"
raise ValueError(msg)
def default_agent(self, kind: Kind) -> str | None:
for fe in self._frontends:
if kind in fe.kinds and (agent := fe.agent_for(kind)):
return agent
return None
async def materialize(self, conv: Conversation) -> ConversationBinding | None:
for fe in self._frontends:
if conv.kind not in fe.kinds:
continue
binding = await fe.materialize(conv)
if binding is not None:
return binding
return None
async def mark_closed(self, conv: Conversation) -> bool:
marked = False
for fe in self._frontends:
if conv.kind in fe.kinds:
try:
marked = await fe.mark_closed(conv) or marked
except Exception: # noqa: BLE001
_log.exception("%s could not mark %s", fe.name, conv.external_id)
return marked
async def read(self, conv: Conversation, *, window: int | None = None) -> str:
return render_messages(await self.history(conv), window=window)
async def history(self, conv: Conversation) -> list[dict[str, Any]]:
if conv.session_id is None:
async with self._db.session() as session:
return await load_messages(
session, conversation_id=cast("int", conv.id)
)
return messages_from_entries(cast("Any", await self.entries(conv)))
async def entries(self, conv: Conversation, *, subpath: str = "") -> list[Any]:
if conv.session_id is None:
return []
key = {**self._store_key(conv), "subpath": subpath}
return list(await self._store.load(cast("Any", key)) or [])
async def subpaths(self, conv: Conversation) -> list[str]:
if conv.session_id is None:
return []
return list(await self._store.list_subkeys(cast("Any", self._store_key(conv))))
async def first_user_texts(self, ids: Iterable[int]) -> dict[int, str]:
wanted = list(ids)
if not wanted:
return {}
async with self._db.session() as session:
rows = (
await session.exec(
select(ConversationMessage).where(
col(ConversationMessage.conversation_id).in_(wanted),
ConversationMessage.seq == 0,
ConversationMessage.role == "user",
)
)
).all()
return {
r.conversation_id: text_of(json.loads(r.content_json)).strip() for r in rows
}
async def implied_title(self, conv: Conversation) -> str | None:
if conv.title:
return conv.title
text = (await self.first_user_texts([cast("int", conv.id)])).get(
cast("int", conv.id)
)
return implied_title(text)
async def chat_name(self, conv: Conversation) -> str:
"""What a ``[[wikilink]]`` to the chat says: the file's stem when it has one."""
window = await self.window_of(conv)
if window and window.endswith(".md"):
return window.rsplit("/", 1)[-1][: -len(".md")]
return await self.implied_title(conv) or conv.external_id
async def adopt(self, *, kind: Kind, first_user_text: str) -> Conversation | None:
"""The one unbound, session-less conversation whose history starts here."""
text = first_user_text.strip()
if not text:
return None
bound = select(ConversationBinding.conversation_id).where(
col(ConversationBinding.visible).is_(True)
)
async with self._db.session() as session:
rows = (
await session.exec(
select(Conversation).where(
Conversation.kind == kind,
Conversation.status == "open",
col(Conversation.session_id).is_(None),
col(Conversation.id).not_in(bound),
)
)
).all()
firsts = await self.first_user_texts(cast("int", r.id) for r in rows)
hits = [r for r in rows if firsts.get(cast("int", r.id)) == text]
return hits[0] if len(hits) == 1 else None
def implied_title(text: str | None) -> str | None:
if not text:
return None
line = text.strip().splitlines()[0].strip()
return line if len(line) <= TITLE_MAX else line[: TITLE_MAX - 1] + ""
def context_of(row: Usage | None) -> int:
"""The last API call's input, or the per-call average for older rows."""
if row is None:
return 0
if row.context_tokens:
return row.context_tokens
total = row.input_tokens + row.cache_read_tokens + row.cache_creation_tokens
return round(total / max(row.num_turns or 1, 1))
+71
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@@ -0,0 +1,71 @@
"""How a new conversation starts: the seed rendered into its first prompt."""
from __future__ import annotations
import inspect
from datetime import UTC, datetime
from typing import TYPE_CHECKING, Any, cast
from beaver_gateway.conversations.kinds import as_kind
from beaver_gateway.conversations.rows import Rows
from beaver_gateway.conversations.texts import SeedContext
if TYPE_CHECKING:
from beaver_gateway.storage.models import Conversation
__all__ = ["SEEDS", "Seeds"]
SEEDS = ("clean", "morning", "copy", "brief")
class Seeds(Rows):
async def pending_seed(self, conv: Conversation) -> str | None:
"""A seed nobody has spoken after yet: rendered now, spent once."""
seed = conv.flags.get("seed")
if not seed:
return None
parent = await self.get_row(conv.parent_id) if conv.parent_id else None
ctx = SeedContext(
kind=as_kind(conv.kind),
seed=str(seed),
agent=conv.agent_name,
parent=parent,
text=None,
title=conv.title,
)
window = conv.flags.get("seed_window")
text = await self.seed_text(
ctx, window=window if isinstance(window, int) else None
)
await self.set_flags(conv, {"seed": None, "seed_window": None})
return text
async def seed_text(self, ctx: SeedContext, *, window: int | None) -> str:
texts = self._texts
stamp = datetime.now(UTC).astimezone().strftime("%Y-%m-%d %H:%M")
head = texts.seed_head.format(
seed=ctx.seed,
kind=ctx.kind,
title=f" «{ctx.title}»" if ctx.title else "",
stamp=stamp,
)
body: str | None = None
if texts.seed is not None:
produced: Any = texts.seed(ctx)
if inspect.isawaitable(produced):
produced = await produced
body = cast("str | None", produced)
if body is None:
if ctx.seed == "brief":
body = ctx.text
elif ctx.seed == "copy":
scope = (
texts.seed_copy_window.format(window=window)
if window
else texts.seed_copy_all
)
body = texts.seed_copy.format(scope=scope)
elif ctx.seed == "morning":
body = texts.seed_morning_missing
parts = [head, body, ctx.text if ctx.seed != "brief" else None]
return "\n\n".join(p for p in parts if p)
+158
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@@ -0,0 +1,158 @@
"""``Conversations`` - the service every frontend, job and gateway tool talks to.
Built as layers, one file each: rows → seeds → turns → messaging →
spawning → questions → closing; this file adds start, stop and restart
recovery. A turn started by a user message streams back to whoever asked;
a turn started by an inject streams nowhere and can only speak via ``say``.
"""
from __future__ import annotations
import asyncio
import contextlib
import logging
import re
from datetime import UTC, datetime, timedelta, tzinfo
from sqlmodel import col, select
from beaver_gateway.conversations.closing import Closing, DistillResult
from beaver_gateway.conversations.kinds import KINDS
from beaver_gateway.conversations.rows import context_of, implied_title
from beaver_gateway.conversations.seeds import SEEDS
from beaver_gateway.conversations.spawning import ForkResult
from beaver_gateway.conversations.state import aware
from beaver_gateway.conversations.texts import (
ConversationTexts,
NewDayContext,
SeedContext,
UserSaid,
)
from beaver_gateway.storage.models import Conversation
__all__ = [
"KINDS",
"SEEDS",
"ConversationTexts",
"Conversations",
"DistillResult",
"ForkResult",
"NewDayContext",
"SeedContext",
"UserSaid",
"context_of",
"implied_title",
"parse_at",
]
_log = logging.getLogger(__name__)
_RELATIVE = re.compile(r"^\+(\d+)\s*([smhd])$")
_UNITS = {"s": 1, "m": 60, "h": 3600, "d": 86400}
class Conversations(Closing):
async def start(self) -> None:
await self.recover()
for row_id in await self._queue.conversations_with_pending():
self._ensure_worker(row_id)
self._idle_task = asyncio.create_task(self._idle_loop())
async def stop(self) -> None:
tasks = list(self._tasks)
if self._idle_task is not None:
tasks.append(self._idle_task)
for task in tasks:
task.cancel()
for task in tasks:
with contextlib.suppress(BaseException):
await task
self._tasks.clear()
self._idle_task = None
async def recover(self) -> list[Conversation]:
"""Repair the transcripts of turns a restart cut and tell each conversation."""
async with self._db.session() as session:
result = await session.exec(
select(Conversation).where(col(Conversation.running_turn).is_not(None))
)
cut = list(result.all())
for conv in cut:
fixed = 0
if conv.session_id is not None:
backend = self._backend(conv.agent_name)
try:
fixed = await backend.repair_session(
conv.session_id, text=self._texts.interrupted
)
except Exception: # noqa: BLE001
_log.exception("repair of %s failed", conv.session_id)
turn_id = conv.running_turn
async def clear(row: Conversation) -> None:
row.running_turn = None
row.pending_question = False
await self._update(conv, clear)
note = self._texts.cut_by_restart.format(turn_id=turn_id)
if fixed:
note += self._texts.repaired_tools.format(
fixed=fixed, interrupted=self._texts.interrupted
)
await self.inject(conv, note, urgency="normal", origin="system")
_log.warning("conversation %s: %s", conv.external_id, note)
for item in await self._queue.interrupted():
_log.warning(
"queue item #%s (%s) was running at restart; marked interrupted",
item.id,
item.priority,
)
return cut
async def _idle_loop(self) -> None:
while True:
try:
await self._emit_idle()
except Exception: # noqa: BLE001
_log.exception("idle watcher failed")
await asyncio.sleep(self._idle_interval)
async def _emit_idle(self) -> None:
if not self._idle_days:
return
now = datetime.now(UTC)
for conv in await self.find(status="open", limit=10_000):
last = aware(conv.last_activity_at or conv.created_at)
days = int((now - last).total_seconds() // 86400)
due = [d for d in self._idle_days if days >= d]
if not due:
continue
notified = int(conv.flags.get("idle_notified", 0) or 0)
if due[-1] <= notified:
continue
await self.set_flags(conv, {"idle_notified": due[-1]})
bindings = await self.bindings(conv)
self._bus.publish(
"conversation.idle",
conversation_id=conv.external_id,
kind=conv.kind,
agent=conv.agent_name,
days=due[-1],
bindings=[
{"frontend": b.frontend, "external_id": b.external_id}
for b in bindings
if b.visible
],
)
def parse_at(at: str, tz: tzinfo = UTC) -> datetime:
raw = at.strip()
match = _RELATIVE.match(raw.replace(" ", ""))
if match:
amount, unit = match.groups()
return datetime.now(UTC) + timedelta(seconds=int(amount) * _UNITS[unit])
parsed = datetime.fromisoformat(raw)
if parsed.tzinfo is None:
parsed = parsed.replace(tzinfo=tz)
return parsed.astimezone(UTC)
@@ -0,0 +1,201 @@
"""New conversations from old ones: spawn with a seed, fork a copy, merge back."""
from __future__ import annotations
import logging
from dataclasses import dataclass
from typing import TYPE_CHECKING, Any, cast
from claude_agent_sdk import fork_session_via_store, project_key_for_directory
from beaver_gateway.backends.transcript import strip_tool_entries, window_entries
from beaver_gateway.conversations.messaging import Messaging
from beaver_gateway.conversations.seeds import SEEDS
from beaver_gateway.conversations.texts import SeedContext
if TYPE_CHECKING:
from beaver_gateway.backends.capture import TurnCapture
from beaver_gateway.conversations.kinds import Kind
from beaver_gateway.storage.models import Conversation
__all__ = ["ForkResult", "Spawning"]
_log = logging.getLogger(__name__)
@dataclass(frozen=True, slots=True)
class ForkResult:
conversation: Conversation
text: str
capture: TurnCapture
class Spawning(Messaging):
async def spawn(
self,
*,
kind: Kind,
agent: str | None = None,
seed: str = "clean",
parent: Conversation | None = None,
text: str | None = None,
title: str | None = None,
window: int | None = None,
origin: str = "api",
binding: tuple[str, str] | None = None,
flags: dict[str, Any] | None = None,
) -> Conversation:
"""Create a conversation in a window and queue its seed.
``binding`` reuses a window that already exists instead of asking the
home frontend for one. Without ``text`` the seed waits in ``flags``
and opens the first turn, so a fresh window costs nothing until
someone speaks.
"""
if seed not in SEEDS:
msg = f"unknown seed {seed!r}"
raise ValueError(msg)
if seed == "brief" and not text:
msg = "seed=brief needs text"
raise ValueError(msg)
if agent is None and kind == "branch" and parent is not None:
agent = parent.agent_name
agent = agent or self.default_agent(kind)
if agent is None:
msg = f"no default agent for kind {kind!r}; pass `agent`"
raise ValueError(msg)
session_id: str | None = None
if seed == "copy":
if parent is None or parent.session_id is None:
msg = "seed=copy needs a parent with a session"
raise ValueError(msg)
session_id = await self._copy_session(
parent, window=window, strip_tools=False
)
conv = await self.create(
kind=kind,
agent=agent,
parent=parent,
title=title,
origin=origin,
session_id=session_id,
flags=flags,
)
if binding is not None:
await self.bind(conv, frontend=binding[0], external_id=binding[1])
else:
await self.materialize(conv)
ctx = SeedContext(
kind=kind, seed=seed, agent=agent, parent=parent, text=text, title=title
)
if text is None:
return await self.set_flags(conv, {"seed": seed, "seed_window": window})
await self._queue.push(
conversation_id=cast("int", conv.id),
priority="user",
origin=f"seed:{seed}" if seed == "brief" else origin,
text=await self.seed_text(ctx, window=window),
)
self._ensure_worker(cast("int", conv.id))
return conv
async def fork(
self,
conv: Conversation,
prompt: str,
*,
window: int | None = None,
strip_tools: bool = False,
title: str | None = None,
agent: str | None = None,
) -> ForkResult:
"""Copy the history into a one-off session, run ``prompt`` on it, close it."""
agent = agent or conv.agent_name
session_id = await self._copy_session(
conv, window=window, strip_tools=strip_tools, agent=agent
)
child = await self.create(
kind="fork",
agent=agent,
parent=conv,
title=title or f"fork: {conv.title or conv.external_id}",
origin="system",
session_id=session_id,
)
try:
text, capture = await self.run_text_turn(
child, prompt, origin="fork", tools=False
)
finally:
await self._backend(agent).close(child.external_id)
child = await self.set_status(child, "closed")
return ForkResult(conversation=child, text=text, capture=capture)
async def merge(self, conv: Conversation) -> ForkResult:
if conv.parent_id is None:
msg = "merge needs a parent conversation"
raise ValueError(msg)
parent = await self.get_row(conv.parent_id)
if parent is None:
msg = "parent conversation vanished"
raise LookupError(msg)
result = await self.fork(
conv,
self._texts.merge_prompt,
title=f"merge: {conv.title or conv.external_id}",
)
if result.text.strip():
await self.inject(parent, result.text, urgency="normal", origin="merge")
await self.set_status(conv, "merged")
await self.mark_closed(conv)
self._bus.publish(
"conversation.merged",
conversation_id=conv.external_id,
parent=parent.external_id,
fork=result.conversation.external_id,
)
return result
async def _copy_session(
self,
conv: Conversation,
*,
window: int | None,
strip_tools: bool,
agent: str | None = None,
) -> str:
if conv.session_id is None:
msg = f"conversation {conv.external_id} has no session to copy"
raise ValueError(msg)
live = self._pool.get(conv.external_id)
if live is not None and live.dirty:
msg = f"conversation {conv.external_id} has a mirror gap; not forking"
raise RuntimeError(msg)
source = self._claude_agent(conv.agent_name)
target = self._claude_agent(agent) if agent else source
forked = await fork_session_via_store(
self._store, conv.session_id, directory=str(source.cwd)
)
source_key = {
"project_key": project_key_for_directory(str(source.cwd)),
"session_id": forked.session_id,
}
target_key = {
"project_key": project_key_for_directory(str(target.cwd)),
"session_id": forked.session_id,
}
if window is not None or strip_tools or target_key != source_key:
entries = await self._store.load(cast("Any", source_key)) or []
trimmed = window_entries(cast("Any", entries), window=window)
if strip_tools:
trimmed = strip_tool_entries(trimmed)
await self._store.delete(cast("Any", source_key))
await self._store.append(cast("Any", target_key), cast("Any", trimmed))
_log.info(
"forked session %s -> %s (window=%s, strip_tools=%s)",
conv.session_id,
forked.session_id,
window,
strip_tools,
)
return forked.session_id
+185
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@@ -0,0 +1,185 @@
"""What every layer of the conversations service shares: wiring and lookups."""
from __future__ import annotations
import asyncio
from dataclasses import dataclass, field
from datetime import UTC, datetime
from typing import TYPE_CHECKING, Any, cast
from claude_agent_sdk import project_key_for_directory
from beaver_gateway.conversations.injects import InjectQueue
from beaver_gateway.conversations.texts import ConversationTexts
if TYPE_CHECKING:
from collections.abc import Awaitable, Callable, Sequence
from claude_agent_sdk import SessionStore
from beaver_gateway.agents.claude import ClaudeAgent
from beaver_gateway.app import AgentRegistry
from beaver_gateway.backends.claude_sdk import ClaudeSdkBackend
from beaver_gateway.backends.sessions import SessionPool
from beaver_gateway.conversations.distill import Distiller
from beaver_gateway.conversations.envelope import Envelope
from beaver_gateway.conversations.texts import UserSaid
from beaver_gateway.events.bus import EventBus
from beaver_gateway.frontends.base import Frontend
from beaver_gateway.jobs.scheduler import Scheduler
from beaver_gateway.storage.db import Database
from beaver_gateway.storage.models import Conversation
__all__ = ["Question", "Runner", "State", "aware", "iso"]
@dataclass
class Runner:
lock: asyncio.Lock = field(default_factory=asyncio.Lock)
wake: asyncio.Event = field(default_factory=asyncio.Event)
task: asyncio.Task[None] | None = None
turn_id: str | None = None
origin: str | None = None
text: str | None = None
started_at: datetime | None = None
tools: dict[str, dict[str, Any]] = field(default_factory=dict)
def snapshot(self) -> dict[str, Any] | None:
if self.turn_id is None:
return None
return {
"id": self.turn_id,
"origin": self.origin,
"text": self.text,
"started_at": iso(self.started_at),
"tools": list(self.tools.values()),
}
@dataclass(frozen=True, slots=True)
class Question:
conversation_id: str
turn_id: str | None
questions: list[dict[str, Any]]
answer: asyncio.Future[str]
class State:
_db: Database
_agents: AgentRegistry
_backends: dict[str, Any]
_bus: EventBus
_pool: SessionPool
_store: SessionStore
_texts: ConversationTexts
_frontends: list[Frontend]
_normal_window: float
_idle_days: tuple[int, ...]
_idle_interval: float
_question_timeout: float
_envelope: Envelope | None
_distiller: Distiller | None
_user_sink: Callable[[UserSaid], Awaitable[None] | None] | None
_queue: InjectQueue
_runners: dict[int, Runner]
_questions: dict[str, Question]
_tasks: set[asyncio.Task[None]]
_idle_task: asyncio.Task[None] | None
scheduler: Scheduler | None
def __init__(
self,
*,
db: Database,
agents: AgentRegistry,
backends: dict[str, Any],
bus: EventBus,
pool: SessionPool,
store: SessionStore,
texts: ConversationTexts | None = None,
frontends: Sequence[Frontend] = (),
normal_window: float = 3600.0,
idle_days: Sequence[int] = (2,),
idle_interval: float = 3600.0,
question_timeout: float = 600.0,
envelope: Envelope | None = None,
distiller: Distiller | None = None,
user_sink: Callable[[UserSaid], Awaitable[None] | None] | None = None,
) -> None:
self._db = db
self._agents = agents
self._backends = backends
self._bus = bus
self._pool = pool
self._store = store
self._texts = texts or ConversationTexts()
self._frontends = [f for f in frontends if f.name]
self._normal_window = normal_window
self._idle_days = tuple(sorted(idle_days))
self._idle_interval = idle_interval
self._question_timeout = question_timeout
self._envelope = envelope
self._distiller = distiller
self._user_sink = user_sink
self._queue = InjectQueue(db)
self._runners = {}
self._questions = {}
self._tasks = set()
self._idle_task = None
self.scheduler = None
@property
def db(self) -> Database:
return self._db
@property
def queue(self) -> InjectQueue:
return self._queue
@property
def bus(self) -> EventBus:
return self._bus
@property
def pool(self) -> SessionPool:
return self._pool
def _backend(self, agent: str) -> ClaudeSdkBackend:
backend = self._backends.get(agent)
if backend is None or not hasattr(backend, "repair_session"):
msg = f"agent {agent!r} has no Claude SDK backend"
raise LookupError(msg)
return cast("ClaudeSdkBackend", backend)
def _claude_agent(self, name: str) -> ClaudeAgent:
agent = self._agents.get(name)
if agent is None or not hasattr(agent, "cwd"):
msg = f"unknown Claude agent {name!r}"
raise LookupError(msg)
return cast("ClaudeAgent", agent)
def _store_key(self, conv: Conversation) -> dict[str, str]:
agent = self._claude_agent(conv.agent_name)
return {
"project_key": project_key_for_directory(str(agent.cwd)),
"session_id": cast("str", conv.session_id),
}
def _runner(self, row_id: int) -> Runner:
runner = self._runners.get(row_id)
if runner is None:
runner = Runner()
self._runners[row_id] = runner
return runner
def _track(self, task: asyncio.Task[None]) -> None:
self._tasks.add(task)
task.add_done_callback(self._tasks.discard)
def aware(value: datetime) -> datetime:
return value if value.tzinfo is not None else value.replace(tzinfo=UTC)
def iso(value: datetime | None) -> str | None:
return aware(value).isoformat(timespec="seconds") if value is not None else None
+125
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@@ -0,0 +1,125 @@
"""Every string the gateway puts in front of a model; English defaults, overridable."""
from __future__ import annotations
from dataclasses import dataclass, field
from typing import TYPE_CHECKING
from beaver_gateway.conversations import injects
if TYPE_CHECKING:
from collections.abc import Awaitable, Callable
from datetime import date, datetime
from beaver_gateway.conversations.distill import DistillContext
from beaver_gateway.conversations.kinds import Kind
from beaver_gateway.conversations.rotation import HandoutContext
from beaver_gateway.storage.models import Conversation
__all__ = [
"ConversationTexts",
"EnvelopeTexts",
"NewDayContext",
"SeedContext",
"UserSaid",
]
@dataclass(frozen=True, slots=True)
class SeedContext:
kind: Kind
seed: str
agent: str
parent: Conversation | None
text: str | None
title: str | None
@dataclass(frozen=True, slots=True)
class NewDayContext:
"""``reason`` is ``night``, ``age`` or ``context``; only ``night`` is a new day."""
day: date
reason: str
moved: int
@dataclass(frozen=True, slots=True)
class UserSaid:
conversation_id: str
kind: str
title: str | None
text: str
at: datetime
@dataclass(frozen=True, slots=True)
class EnvelopeTexts:
header: str = (
"[envelope - background signal, not a message; react only if it bears "
"on the question]"
)
time: str = "time: {stamp} ({zone})"
changed: str = "vault, changed {since}: {names}"
since: str = "since {time}"
since_start: str = "since start"
truncated: str = "… (envelope cap)"
file_header: str = "--- {path}, added lines only ---"
more_lines: str = "+ … {count} more"
@dataclass(frozen=True, slots=True)
class ConversationTexts:
merge_prompt: str = (
"This branch is closing. Write a merge note for the master: what was "
"decided, what was done, what was not and why, open questions. "
"Identifiers and links verbatim. Brief, past tense."
)
inject_header: Callable[[injects.InjectContext], str] = injects.inject_header
bundle_header: str = "[injects accumulated since {since}; not the user]"
interrupted: str = "interrupted"
answered: str = "The user answered: {answer}"
unanswered: str = (
"The user did not answer within {minutes} min. The question was shown "
"to them as text; finish the turn now, the answer comes as the next "
"message."
)
seed: Callable[[SeedContext], Awaitable[str | None] | str | None] | None = None
"""Body of a seed by mode; ``None`` from it falls back to the defaults below."""
seed_head: str = "[seed: {seed}] {kind}{title}, {stamp}."
seed_copy: str = "The parent's history is copied ({scope}); continue in it."
seed_copy_window: str = "last {window} turns"
seed_copy_all: str = "whole history"
seed_morning_missing: str = "No handout arrived."
handout: Callable[[HandoutContext], Awaitable[str] | str] | str = (
"This master is closing ({reason}). Write the handout for {day}: a "
"briefing for the morning, not a task list - past tense, no imperatives."
)
new_day: Callable[[NewDayContext], Awaitable[str] | str] | str = (
"The master was replaced ({reason}); the handout for {day} is written."
)
moved_injects: str = " {moved} queued injects moved over from the old master."
distill: Callable[[DistillContext], Awaitable[str] | str] | None = None
"""The distiller fork's first message; ``None`` uses the two templates below."""
distill_prompt: str = (
"Deep chat «{chat}» is closed ({reason}), today is {day}. Write the "
"digest as a file and the merge as your reply: up to 5 lines, third "
"person."
)
distill_prompt_no_memory: str = (
"Deep chat «{chat}» is closed ({reason}), today is {day}. Memory is off "
"for it: write no file, only the merge as your reply - up to 5 lines, "
"third person."
)
closed: str = "Deep chat [[{chat}]] closed{digest}.\n{text}"
closed_digest: str = ", digest [[{digest}]]"
digest_missing: str = "the digest file did not appear"
too_long: str = (
"`{name}`: {lines} lines against a cap of {max_lines}. The write was "
"rejected and the file restored. Shorten and rewrite."
)
cut_by_restart: str = "turn {turn_id} was cut by a gateway restart"
repaired_tools: str = (
"; {fixed} open tool calls received tool_result «{interrupted}»"
)
envelope: EnvelopeTexts = field(default_factory=EnvelopeTexts)
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"""In-process MCP server with the gateway's own tools (§3.1, §3.2).
One server per live session so every tool knows which conversation is
calling; ``alwaysLoad`` keeps the tools out of tool search. Which names a
session gets comes from ``ClaudeAgent.gateway_tools``.
"""
from __future__ import annotations
import logging
from dataclasses import replace
from typing import TYPE_CHECKING, Any, cast
from claude_agent_sdk import create_sdk_mcp_server, tool
from beaver_gateway.conversations.injects import URGENCY
from beaver_gateway.conversations.kinds import as_kind
from beaver_gateway.security.redact import redact_data
URGENCY_HELP = (
"normal waits for the hourly batch or rides with the next turn, wake "
"starts a turn as soon as the target is idle, urgent cuts a running turn"
)
TARGET_HELP = (
"conversation id, or `master` for the open master, `parent` for the "
"parent of this conversation"
)
if TYPE_CHECKING:
from collections.abc import Iterable
from claude_agent_sdk import McpSdkServerConfig, SdkMcpTool
from beaver_gateway.conversations.service import Conversations
__all__ = ["SERVER_NAME", "TOOL_NAMES", "build_tool_server"]
_log = logging.getLogger("beaver_gateway.conversations.tools")
SERVER_NAME = "gateway"
SAY_IN_USER_TURN = (
"not delivered: this turn was started by the human's message, so your "
"reply text reaches them by itself - put what you wanted to say into the "
"reply instead of repeating it here"
)
TOOL_NAMES = ("read_conversation", "spawn", "say", "schedule", "inject", "close_chat")
def build_tool_server(
conversations: Conversations, *, conversation_key: str, names: Iterable[str]
) -> McpSdkServerConfig | None:
wanted = set(names)
unknown = wanted - set(TOOL_NAMES)
if unknown:
msg = f"unknown gateway tools: {sorted(unknown)}"
raise ValueError(msg)
tools = [
_redacting(t)
for t in _tools(conversations, conversation_key)
if t.name in wanted
]
if not tools:
return None
server = create_sdk_mcp_server(SERVER_NAME, tools=tools)
return cast("McpSdkServerConfig", {**server, "alwaysLoad": True})
def _redacting(spec: SdkMcpTool[Any]) -> SdkMcpTool[Any]:
"""Put a tool's result through the same mask as every other MCP.
These tools are mounted in-process by the SDK, so they bypass the
``FastMCP`` middleware in :mod:`beaver_gateway.mcp.redacting` and
need the filter attached here instead. ``read_conversation`` is the
one that earns it: it replays a transcript, and a transcript written
before any of this existed can still hold a credential.
"""
inner = spec.handler
async def handler(args: Any) -> dict[str, Any]:
return cast("dict[str, Any]", redact_data(await inner(args)))
return replace(spec, handler=handler)
def _tools(conversations: Conversations, key: str) -> list[SdkMcpTool[Any]]:
async def current() -> Any:
conv = await conversations.get(key)
if conv is None:
msg = f"conversation {key} not found"
raise LookupError(msg)
return conv
async def target(raw: Any) -> Any:
conv = await conversations.resolve(str(raw), origin=await current())
if conv is None:
_log.warning("gateway tool in %s: conversation %r not found", key, raw)
return conv
@tool(
"read_conversation",
"Read another conversation (a branch, the master, a deep chat) as plain "
"text. `window` limits it to the last N user turns.",
{
"type": "object",
"properties": {
"id": {"type": "string", "description": TARGET_HELP},
"window": {"type": "integer", "minimum": 1},
},
"required": ["id"],
},
)
async def read_conversation(args: dict[str, Any]) -> dict[str, Any]:
conv = await target(args["id"])
if conv is None:
return _error(f"conversation {args['id']} not found ({TARGET_HELP})")
text = await conversations.read(conv, window=args.get("window"))
return _text(text or "(empty)")
@tool(
"spawn",
"Open a new conversation of the given kind (branch = your own thread, "
"deep = a long research chat, job = a headless task). `seed` is how it "
"starts: clean (nothing), morning (handout), copy (copy of this "
"conversation, last `window` turns), brief (your `text`). A branch "
"keeps your agent, other kinds get their frontend's default unless "
"`agent` says otherwise. Returns the id.",
{
"type": "object",
"properties": {
"kind": {"type": "string", "enum": ["branch", "deep", "job"]},
"agent": {"type": "string", "description": "agent name"},
"seed": {
"type": "string",
"enum": ["clean", "morning", "copy", "brief"],
"default": "clean",
},
"text": {"type": "string", "description": "brief for seed=brief"},
"title": {"type": "string"},
"window": {"type": "integer", "minimum": 1},
},
"required": ["kind"],
},
)
async def spawn(args: dict[str, Any]) -> dict[str, Any]:
parent = await current()
try:
child = await conversations.spawn(
kind=as_kind(str(args["kind"])),
agent=args.get("agent"),
seed=str(args.get("seed") or "clean"),
parent=parent,
text=args.get("text"),
title=args.get("title"),
window=args.get("window"),
origin="mcp",
)
except (ValueError, LookupError) as exc:
return _error(str(exc))
return _text(f"spawned {child.kind} {child.external_id}")
@tool(
"say",
"Say something to the human in the frontend this conversation is bound "
"to. The only way an inject-started turn can speak; silence is simply "
"not calling it. Refused in a turn started by the human's own message: "
"there your reply text reaches them by itself, so just write the reply.",
{"text": str},
)
async def say(args: dict[str, Any]) -> dict[str, Any]:
conv = await current()
if conversations.turn_origin(conv) == "user":
return _error(SAY_IN_USER_TURN)
await conversations.say(conv, str(args["text"]))
return _text("ok")
@tool(
"schedule",
"Promise yourself an inject later: `at` is `+15m`, `+2h`, `+1d` or an "
"ISO datetime; `text` arrives in this conversation at that time and "
"starts a turn (urgency wake). " + URGENCY_HELP + ".",
{
"type": "object",
"properties": {
"at": {"type": "string"},
"text": {"type": "string"},
"urgency": {"type": "string", "enum": list(URGENCY), "default": "wake"},
},
"required": ["at", "text"],
},
)
async def schedule(args: dict[str, Any]) -> dict[str, Any]:
conv = await current()
try:
job_id, when = await conversations.schedule(
conv,
str(args["at"]),
str(args["text"]),
urgency=cast("Any", args.get("urgency") or "wake"),
)
except (RuntimeError, ValueError) as exc:
return _error(str(exc))
return _text(f"scheduled #{job_id} at {when.isoformat(timespec='minutes')}")
@tool(
"inject",
"Put a system-origin message into another conversation's queue. "
+ URGENCY_HELP
+ ". An error here means nothing was delivered.",
{
"type": "object",
"properties": {
"conversation": {"type": "string", "description": TARGET_HELP},
"text": {"type": "string"},
"urgency": {
"type": "string",
"enum": list(URGENCY),
"default": "normal",
},
},
"required": ["conversation", "text"],
},
)
async def inject(args: dict[str, Any]) -> dict[str, Any]:
conv = await target(args["conversation"])
if conv is None:
return _error(
f"conversation {args['conversation']} not found ({TARGET_HELP})"
)
item = await conversations.inject(
conv,
str(args["text"]),
urgency=cast("Any", args.get("urgency") or "normal"),
origin="agent",
)
return _text(f"queued #{item.id}")
@tool(
"close_chat",
"Close this deep chat once the current reply is finished: the "
"distiller forks it, writes the digest and hands a short merge to the "
"master. Call it when the human says the discussion is over; the chat "
"file stays as it is.",
{"type": "object", "properties": {}},
)
async def close_chat(_args: dict[str, Any]) -> dict[str, Any]:
conv = await current()
try:
await conversations.request_close(conv)
except ValueError as exc:
return _error(str(exc))
return _text("ok: the chat closes after this reply")
return [read_conversation, spawn, say, schedule, inject, close_chat]
def _text(text: str) -> dict[str, Any]:
return {"content": [{"type": "text", "text": text}]}
def _error(text: str) -> dict[str, Any]:
return {"content": [{"type": "text", "text": text}], "is_error": True}
+444
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"""Running turns: one worker per conversation over its queue, the backend call."""
from __future__ import annotations
import asyncio
import contextlib
import inspect
import logging
from datetime import UTC, datetime
from typing import TYPE_CHECKING, Any, cast
from uuid import uuid4
from claude_agent_sdk import (
AssistantMessage,
RateLimitEvent,
ResultMessage,
StreamEvent,
ToolResultBlock,
ToolUseBlock,
UserMessage,
)
from beaver_gateway.backends.capture import TurnCapture
from beaver_gateway.backends.transcript import text_of
from beaver_gateway.conversations import injects
from beaver_gateway.conversations.seeds import Seeds
from beaver_gateway.conversations.state import Runner, aware, iso
from beaver_gateway.conversations.texts import UserSaid
from beaver_gateway.frontends.accumulate import StreamAccumulator
from beaver_gateway.storage.models import Conversation, InjectQueueItem, RateLimit
if TYPE_CHECKING:
from collections.abc import AsyncIterator, Callable, Sequence
from beaver_gateway.events.stream import MessageStreamEvent
__all__ = ["Turns"]
_log = logging.getLogger(__name__)
class Turns(Seeds):
async def turn(
self,
conv: Conversation,
*,
messages: Sequence[Any],
origin: str,
capture: TurnCapture | None = None,
session_id: str | None = None,
use_session: bool = True,
tools: bool = True,
turn_id: str | None = None,
item_origin: str | None = None,
) -> AsyncIterator[MessageStreamEvent]:
"""Run one turn under the conversation's lock; the only path to the backend."""
row_id = cast("int", conv.id)
runner = self._runner(row_id)
backend = self._backend(conv.agent_name)
turn_id = turn_id or f"turn_{uuid4().hex[:12]}"
capture = capture or TurnCapture()
resume = session_id if session_id is not None else conv.session_id
async with runner.lock:
runner.turn_id = turn_id
runner.origin = origin
runner.text = _prompt_preview(messages)
runner.started_at = datetime.now(UTC)
runner.tools = {}
await self._mark_running(conv, turn_id)
before = await self.before_turn(conv)
self._bus.publish(
"turn.start",
conversation_id=conv.external_id,
turn_id=turn_id,
origin=origin,
item_origin=item_origin,
text=runner.text,
)
stop = "error"
cut = False
try:
events = backend.complete(
agent=self._claude_agent(conv.agent_name),
messages=messages,
conversation_id=conv.external_id,
session_id=resume if use_session else None,
reseed=not use_session,
capture=capture,
kind=conv.kind,
pinned=conv.kind == "master",
tools=tools,
observer=self._observer(conv, runner, turn_id, origin),
turn_id=turn_id,
)
async for event in events:
yield event
stop = "interrupted" if capture.interrupted else "end_turn"
except asyncio.CancelledError:
cut = True
raise
finally:
runner.turn_id = None
await self._mark_done(conv, capture, cut=cut)
if stop != "error":
try:
await self.after_turn(conv, before)
except Exception: # noqa: BLE001
_log.exception("after-turn hook on %s failed", conv.external_id)
self._bus.publish(
"turn.end",
conversation_id=conv.external_id,
turn_id=turn_id,
origin=origin,
item_origin=item_origin,
stop=stop,
usage=_usage_dict(capture),
)
async def run_text_turn(
self,
conv: Conversation,
text: str,
*,
origin: str,
tools: bool = True,
turn_id: str | None = None,
item_origin: str | None = None,
) -> tuple[str, TurnCapture]:
capture = TurnCapture()
acc = StreamAccumulator()
agent = self._claude_agent(conv.agent_name)
async for event in self.turn(
conv,
messages=[{"role": "user", "content": text}],
origin=origin,
capture=capture,
tools=tools,
turn_id=turn_id,
item_origin=item_origin,
):
acc.feed(event)
message = acc.finalize(model=agent.model)
reply = "\n\n".join(
getattr(b, "text", "")
for b in message.content
if getattr(b, "type", "") == "text"
).strip()
return reply, capture
async def before_turn(self, conv: Conversation) -> str | None: # noqa: ARG002
return None
async def after_turn(self, conv: Conversation, before: str | None) -> None: # noqa: ARG002
return
def turn_origin(self, conv: Conversation) -> str | None:
runner = self._runners.get(cast("int", conv.id))
return runner.origin if runner is not None and runner.turn_id else None
def _ensure_worker(self, row_id: int) -> None:
runner = self._runner(row_id)
runner.wake.set()
if runner.task is None or runner.task.done():
runner.task = asyncio.create_task(self._worker(row_id))
self._track(runner.task)
async def _worker(self, row_id: int) -> None:
runner = self._runner(row_id)
while True:
items = await self._queue.pending(row_id)
batch, wait = self._pick(items)
if batch is None:
runner.wake.clear()
if wait is None:
return
with contextlib.suppress(TimeoutError):
await asyncio.wait_for(runner.wake.wait(), timeout=wait)
continue
conv = await self.get_row(row_id)
if conv is None:
await self._queue.finish(batch, status="failed")
return
await self._run_batch(conv, batch)
def _pick(
self, items: list[InjectQueueItem]
) -> tuple[list[InjectQueueItem] | None, float | None]:
if not items:
return None, None
head = items[0]
if head.priority == "urgent":
return [head], None
tail = [i for i in items if i is not head and i.priority in ("wake", "normal")]
if head.priority in ("user", "wake"):
return [head, *tail], None
age = (datetime.now(UTC) - aware(head.created_at)).total_seconds()
if age >= self._normal_window:
return [head, *tail], None
return None, max(self._normal_window - age, 1.0)
async def _run_batch(
self, conv: Conversation, batch: list[InjectQueueItem]
) -> None:
head = batch[0]
turn_id = f"turn_{uuid4().hex[:12]}"
await self._queue.start(batch, turn_id)
if head.priority == "user":
origin = "user"
prompt = head.text
await self._note_user(conv, head.text)
envelope = self._envelope_for(conv, head.text)
if envelope:
prompt += "\n\n" + envelope
if len(batch) > 1:
prompt += "\n\n" + self._bundle(batch[1:])
else:
origin = "inject"
prompt = "\n\n".join(
f"{self._texts.inject_header(injects.context_of(i))}\n{i.text}"
for i in batch
)
seed = await self.pending_seed(conv)
if seed:
prompt = f"{seed}\n\n{prompt}"
try:
text, capture = await self.run_text_turn(
conv, prompt, origin=origin, turn_id=turn_id, item_origin=head.origin
)
except Exception: # noqa: BLE001
_log.exception("turn %s on %s failed", turn_id, conv.external_id)
await self._queue.finish(batch, status="failed")
return
await self._queue.finish(
batch, status="interrupted" if capture.interrupted else "done"
)
if origin == "user":
self._bus.publish(
"reply",
conversation_id=conv.external_id,
turn_id=turn_id,
item=head.id,
item_origin=head.origin,
source="queue",
prompt=prompt,
user_text=head.text,
text=text,
)
def _bundle(self, items: Sequence[InjectQueueItem]) -> str:
lines = [self._texts.bundle_header.format(since=iso(items[0].created_at))]
lines.extend(f"- [{i.origin}] {i.text}" for i in items)
return "\n".join(lines)
def _envelope_for(self, conv: Conversation, text: str = "") -> str | None:
if self._envelope is None:
return None
if conv.kind == "master":
return self._envelope.build(text=text, kind="master")
if conv.kind == "branch":
return self._envelope.recall_only(text=text, kind="branch")
return None
async def _note_user(self, conv: Conversation, text: str) -> None:
if self._user_sink is None:
return
message = UserSaid(
conversation_id=conv.external_id,
kind=conv.kind,
title=conv.title,
text=text,
at=datetime.now(UTC),
)
try:
result = self._user_sink(message)
if inspect.isawaitable(result):
await result
except Exception: # noqa: BLE001
_log.exception("user sink failed for %s", conv.external_id)
def _observer(
self, conv: Conversation, runner: Runner, turn_id: str, origin: str
) -> Callable[[Any], None]:
conversation_id = conv.external_id
def observe(message: Any) -> None:
parent = getattr(message, "parent_tool_use_id", None)
if isinstance(message, RateLimitEvent):
self._observe_rate_limit(conv, message)
elif isinstance(message, StreamEvent):
self._bus.publish(
"stream",
conversation_id=conversation_id,
turn_id=turn_id,
origin=origin,
parent_tool_use_id=parent,
event=message.event,
)
elif isinstance(message, AssistantMessage):
for block in message.content:
if isinstance(block, ToolUseBlock):
event = self._bus.publish(
"tool",
conversation_id=conversation_id,
turn_id=turn_id,
origin=origin,
parent_tool_use_id=parent,
tool_use_id=block.id,
name=block.name,
input=block.input,
)
runner.tools[block.id] = {
"tool_use_id": block.id,
"name": block.name,
"input": block.input,
"parent_tool_use_id": parent,
"started_at": event["ts"],
"ended_at": None,
"is_error": None,
"content": None,
}
elif isinstance(message, UserMessage):
blocks = message.content if isinstance(message.content, list) else ()
for block in blocks:
if isinstance(block, ToolResultBlock):
event = self._bus.publish(
"tool.result",
conversation_id=conversation_id,
turn_id=turn_id,
origin=origin,
parent_tool_use_id=parent,
tool_use_id=block.tool_use_id,
is_error=bool(block.is_error),
content=_result_preview(block.content),
)
node = runner.tools.get(block.tool_use_id)
if node is not None:
node["ended_at"] = event["ts"]
node["is_error"] = event["is_error"]
node["content"] = event["content"]
elif isinstance(message, ResultMessage) and parent is None:
self._bus.publish(
"result",
conversation_id=conversation_id,
turn_id=turn_id,
origin=origin,
subtype=message.subtype,
is_error=message.is_error,
num_turns=message.num_turns,
)
return observe
def _observe_rate_limit(self, conv: Conversation, message: RateLimitEvent) -> None:
info = message.rate_limit_info
row = RateLimit(
window=info.rate_limit_type or "unknown",
status=info.status,
utilization=info.utilization,
resets_at=_from_unix(info.resets_at),
overage_status=info.overage_status,
overage_resets_at=_from_unix(info.overage_resets_at),
agent_name=conv.agent_name,
session_id=message.session_id,
raw=dict(info.raw),
)
self._bus.publish(
"rate_limit",
conversation_id=conv.external_id,
window=row.window,
status=row.status,
utilization=row.utilization,
resets_at=iso(row.resets_at),
overage_status=row.overage_status,
)
self._track(asyncio.create_task(self._record_rate_limit(row)))
async def _record_rate_limit(self, row: RateLimit) -> None:
try:
async with self._db.session() as session:
session.add(row)
await session.commit()
except Exception: # noqa: BLE001
_log.exception("rate limit write failed")
async def _mark_running(self, conv: Conversation, turn_id: str) -> None:
async def apply(row: Conversation) -> None:
row.running_turn = turn_id
row.last_activity_at = datetime.now(UTC)
await self._update(conv, apply)
async def _mark_done(
self, conv: Conversation, capture: TurnCapture, *, cut: bool = False
) -> None:
async def apply(row: Conversation) -> None:
if not cut:
row.running_turn = None
row.last_activity_at = datetime.now(UTC)
if capture.session_id is not None:
row.session_id = capture.session_id
await self._update(conv, apply)
def _prompt_preview(messages: Sequence[Any], limit: int = 400) -> str | None:
if not messages:
return None
text = text_of(messages[-1].get("content"))
return text[:limit] if text else None
def _from_unix(value: int | None) -> datetime | None:
return datetime.fromtimestamp(value, tz=UTC) if value is not None else None
def _result_preview(
content: str | list[dict[str, Any]] | None, limit: int = 400
) -> str:
if content is None:
return ""
text = (
content
if isinstance(content, str)
else "\n".join(
str(part.get("text", ""))
for part in content
if isinstance(part, dict) and part.get("type") == "text"
)
)
return text if len(text) <= limit else text[:limit] + ""
def _usage_dict(capture: TurnCapture) -> dict[str, Any] | None:
usage = capture.usage
if usage is None:
return None
return {
"input": usage.input_tokens,
"output": usage.output_tokens,
"cache_read": usage.cache_read_tokens,
"cache_creation": usage.cache_creation_tokens,
"cost_usd": usage.cost_usd,
"duration_ms": usage.duration_ms,
}