84 lines
2.3 KiB
Python
84 lines
2.3 KiB
Python
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from __future__ import annotations
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import json
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from datetime import datetime, timezone
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from pathlib import Path
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from typing import Any, Dict, List
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from .config import AGENT_DIR
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def _utc_now_iso() -> str:
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return datetime.now(timezone.utc).replace(microsecond=0).isoformat()
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def journal_path(cfg: Dict[str, Any]) -> Path:
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return AGENT_DIR / "state" / "journal.jsonl"
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def evolution_path(cfg: Dict[str, Any]) -> Path:
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rel = (cfg.get("memory") or {}).get("evolution_path", "state/evolution.json")
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return (AGENT_DIR / rel).resolve()
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def append_journal(cfg: Dict[str, Any], record: Dict[str, Any]) -> None:
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p = journal_path(cfg)
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p.parent.mkdir(parents=True, exist_ok=True)
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line = json.dumps(record, ensure_ascii=False) + "\n"
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with p.open("a", encoding="utf-8") as f:
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f.write(line)
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def tail_journal(cfg: Dict[str, Any], max_lines: int) -> str:
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p = journal_path(cfg)
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if not p.is_file():
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return ""
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lines: List[str] = []
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with p.open("r", encoding="utf-8") as f:
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for line in f:
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lines.append(line.rstrip("\n"))
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tail = lines[-max_lines:] if max_lines > 0 else lines
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return "\n".join(tail)
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def load_evolution(cfg: Dict[str, Any]) -> Dict[str, Any]:
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p = evolution_path(cfg)
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if not p.is_file():
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return {
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"version": 1,
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"created": _utc_now_iso(),
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"best": None,
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"notes": [],
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}
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with p.open("r", encoding="utf-8") as f:
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return json.load(f)
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def save_evolution(cfg: Dict[str, Any], data: Dict[str, Any]) -> None:
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p = evolution_path(cfg)
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p.parent.mkdir(parents=True, exist_ok=True)
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with p.open("w", encoding="utf-8") as f:
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json.dump(data, f, indent=2, ensure_ascii=False)
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def maybe_update_evolution(
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cfg: Dict[str, Any],
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iteration: int,
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backtest_stdout: str,
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) -> str:
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"""
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Heuristic: if stdout mentions profit / return, store snippet for self-improve prompts.
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"""
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ev = load_evolution(cfg)
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snippet = backtest_stdout[-6000:] if backtest_stdout else ""
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note = {
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"t": _utc_now_iso(),
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"iteration": iteration,
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"stdout_tail": snippet[-2000:],
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}
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notes = ev.get("notes") or []
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notes.append(note)
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ev["notes"] = notes[-200:]
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save_evolution(cfg, ev)
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return json.dumps(note, ensure_ascii=False)
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