72 lines
2.6 KiB
Python
72 lines
2.6 KiB
Python
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"""Dispatch writer.
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Each registered CC session has a directory ``dispatch/<session_id>/``.
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The daemon delivers a chat-side response by writing it to
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``dispatch/<session_id>/input.txt``. CC's polling loop reads, acts on
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the content, and **deletes** the file as the acknowledgement.
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The "only write when prior is consumed" rule means the daemon must not
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overwrite a pending dispatch — otherwise CC could miss a turn. If the
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daemon has new content for a session that hasn't yet consumed the
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previous one, it queues internally and waits.
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"""
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from __future__ import annotations
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import logging
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from collections import defaultdict, deque
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from dataclasses import dataclass, field
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from pathlib import Path
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from relay.state import write_atomic
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logger = logging.getLogger(__name__)
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@dataclass
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class DispatchManager:
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dispatch_dir: Path
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_pending: dict[str, deque[str]] = field(default_factory=lambda: defaultdict(deque))
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def session_dir(self, session_id: str) -> Path:
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return self.dispatch_dir / session_id
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def input_path(self, session_id: str) -> Path:
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return self.session_dir(session_id) / "input.txt"
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def has_pending(self, session_id: str) -> bool:
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return bool(self._pending[session_id])
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def session_input_present(self, session_id: str) -> bool:
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"""True iff the session's input.txt exists (CC hasn't consumed yet)."""
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return self.input_path(session_id).exists()
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def queue_or_write(self, session_id: str, content: str) -> bool:
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"""Try to deliver content. If session's input.txt is still present,
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queue internally and return False; otherwise write and return True.
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"""
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self._pending[session_id].append(content)
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return self._flush_session(session_id)
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def flush_all(self) -> int:
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"""Try to flush queued dispatches for every session. Returns count delivered."""
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delivered = 0
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for session_id in list(self._pending.keys()):
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while self._pending[session_id]:
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if not self._flush_session(session_id):
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break
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delivered += 1
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return delivered
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def _flush_session(self, session_id: str) -> bool:
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if not self._pending[session_id]:
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return False
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if self.session_input_present(session_id):
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return False
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next_content = self._pending[session_id].popleft()
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path = self.input_path(session_id)
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path.parent.mkdir(parents=True, exist_ok=True)
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write_atomic(path, next_content)
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logger.info("dispatched %d chars to %s -> %s", len(next_content), session_id, path)
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return True
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