Teknium
90 lines
3.6 KiB
Python
90 lines
3.6 KiB
Python
"""skill_view repeat-view dedup registry: per-task cache of (skill name, file_path) ->
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(skill file mtime+size). A repeat view of an UNCHANGED file returns a short stub — the earlier
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tool result already carries the content verbatim. Cleared on context compression via
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``reset_skill_view_dedup()`` because the original content is summarized away.
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"""
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import json
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import os
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import threading
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from typing import Dict
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_skill_view_tracker: Dict[str, Dict[tuple, tuple]] = {}
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_skill_view_tracker_lock = threading.Lock()
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_SKILL_VIEW_DEDUP_CAP = 200
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_SKILL_VIEW_DEDUP_MESSAGE = (
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"Skill content unchanged since it was loaded earlier in this "
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"conversation — refer to the earlier skill_view result; it is still "
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"current and complete. (Re-issued after context compression, this "
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"returns the full content again.)")
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def _skill_view_fingerprint(payload: dict) -> tuple | None:
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"""Stat the skill file a successful skill_view served, for change detection."""
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if not (src := payload.get("_source_path")):
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return None
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try:
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st = os.stat(src)
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return (src, st.st_mtime_ns, st.st_size)
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except OSError:
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return None
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def _record_skill_view(task_id, name, file_path, payload: dict) -> None:
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"""Record a served skill_view so an identical repeat can be deduped."""
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# Never dedup setup-needed views: readiness depends on config/env state that
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# changes without the file changing; the model must see the refreshed status.
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if (not task_id or payload.get("setup_needed")
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or payload.get("readiness_status") == "setup_needed"):
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return
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if (fp := _skill_view_fingerprint(payload)) is None:
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return
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key = (str(payload.get("name") or name), file_path or "")
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with _skill_view_tracker_lock:
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cache = _skill_view_tracker.setdefault(str(task_id), {})
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cache[key] = fp
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while len(cache) > _SKILL_VIEW_DEDUP_CAP: # FIFO eviction
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del cache[next(iter(cache))]
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def _check_skill_view_dedup(task_id, name, file_path) -> str | None:
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"""Dedup stub when this exact skill file was already served to this task and
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is unchanged on disk; None otherwise."""
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if not task_id:
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return None
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n = str(name)
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with _skill_view_tracker_lock:
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if not (cache := _skill_view_tracker.get(str(task_id))):
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return None
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# Record key is the RESOLVED name; match raw and resolved forms so
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# 'category/skill' and bare-name views coalesce.
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for key, (src, mtime_ns, size) in list(cache.items()):
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rec_name, rec_fp = key
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if rec_fp != (file_path or "") or (
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rec_name != n and not n.endswith("/" + rec_name)
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and not rec_name.endswith("/" + n) and n.split(":")[-1] != rec_name):
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continue
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try:
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st = os.stat(src)
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changed = (st.st_mtime_ns, st.st_size) != (mtime_ns, size)
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except OSError:
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changed = True
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if changed:
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cache.pop(key, None)
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return None
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return json.dumps({
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"success": True, "status": "unchanged", "name": rec_name,
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"file": file_path or "SKILL.md", "dedup": True, "content_returned": False,
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"message": _SKILL_VIEW_DEDUP_MESSAGE}, ensure_ascii=False)
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return None
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def reset_skill_view_dedup(task_id: str | None = None) -> None:
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"""Clear the dedup cache (all tasks when task_id is None); called on context compression."""
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with _skill_view_tracker_lock:
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if task_id is None:
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_skill_view_tracker.clear()
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else:
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_skill_view_tracker.pop(str(task_id), None)
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