yoniebans
74fdfe6b50
Live-test conversation surfaced that the 'three modes (fast, summary,
guided)' framing makes the modes sound like peers when they aren't.
Guided literally cannot be a default — _resolve_user_default_mode()
already rejects it and forces summary. The honest shape is two
starting moves (fast, summary) plus one follow-up move (guided) that
needs anchors from a prior call.
Two cleanups follow from that:
1) Schema description rewritten with the 'two starts + one follow-up'
framing. Old MODES 1/2/3 list replaced with a structured 'Starting
moves' / 'Follow-up move' block. Recommended flows section folded
in (the per-question heuristics are now under each move's bullet).
2) Single-anchor schema parameters (session_id, around_message_id)
REMOVED from the LLM-facing schema. After multi-anchor shipped,
one-element anchors=[{...}] handles the single-anchor case
identically. Keeping both shapes in the schema was confusing — the
LLM occasionally tried to pair them or asked which to use.
The Python session_search() function still accepts session_id /
around_message_id kwargs for direct callers and test fixtures
(back-compat); only the LLM-facing schema lost them. Parameter
surface dropped from 6 LLM-visible knobs to 4 (query, role_filter,
limit, mode + anchors, window).
The mode parameter's description also got tightened — short summary of
each mode, points to the top-level description for when-to-use
guidance. The old description was duplicating the top-level mode
explanation in a more verbose form.
Updated test_schema_advertises_guided_mode:
- Asserts match_message_id pairing guidance now lives on the
anchors parameter, not the top-level description.
- Explicitly asserts session_id / around_message_id are NOT in the
schema (regression-proof against re-adding them).
93/93 session_search + get_messages_around tests passing.
This is the param-surface cleanup discussed yesterday alongside the
default_mode config commit. Closes the schema-surface side of the
'fast vs guided is confusing' user feedback; the spike doc §6.7 / §7
get matching updates in a separate commit on the architecture branch.
1135 lines
48 KiB
Python
1135 lines
48 KiB
Python
#!/usr/bin/env python3
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"""
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Session Search Tool - Long-Term Conversation Recall
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Searches past session transcripts in SQLite via FTS5. Keyword search defaults
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to fast snippet/context hits without any LLM call; callers can opt into focused
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LLM summaries with mode="summary" when deeper recall is worth the latency.
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Flow:
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1. FTS5 search finds matching messages ranked by relevance
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2. Groups by session, takes the top N unique sessions (default 3)
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3. Fast mode returns snippets and nearby context immediately
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4. Summary mode loads each session, truncates around matches, and calls an LLM
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5. Returns per-session hits/summaries with metadata
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"""
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import asyncio
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import concurrent.futures
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import json
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import logging
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import re
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from typing import Dict, Any, List, Optional, Union
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from agent.auxiliary_client import async_call_llm, extract_content_or_reasoning
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MAX_SESSION_CHARS = 100_000
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# Default mode is summary unless the user opts into a different one via
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# ``tools.session_search.default_mode`` in ~/.hermes/config.yaml. Only ``fast``
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# and ``summary`` are valid defaults — guided requires anchors and can't be
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# used standalone. Wrapped in lru_cache so the YAML read happens at most once
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# per process; the CLI / TUI is the typical caller and config changes need a
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# restart anyway.
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_VALID_DEFAULT_MODES = ("fast", "summary")
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def _resolve_user_default_mode() -> str:
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"""Look up ``tools.session_search.default_mode`` from ~/.hermes/config.yaml.
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Returns "summary" if unset, invalid, or the config loader is unavailable
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(e.g. tests, tools loaded outside the CLI). Logs a one-time warning on
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invalid values so users get feedback when they typo their config.
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"""
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try:
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from hermes_cli.config import load_config
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config = load_config() or {}
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except ImportError:
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logging.debug("hermes_cli.config not available; default_mode falls back to 'summary'")
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return "summary"
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except Exception as e:
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logging.debug("Failed to load config for session_search default_mode: %s", e, exc_info=True)
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return "summary"
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raw = (
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config.get("tools", {})
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.get("session_search", {})
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.get("default_mode")
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)
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if raw is None:
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return "summary"
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if not isinstance(raw, str):
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logging.warning(
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"tools.session_search.default_mode in config.yaml must be a string, got %r — falling back to 'summary'",
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raw,
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)
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return "summary"
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normalised = raw.strip().lower()
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if normalised not in _VALID_DEFAULT_MODES:
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logging.warning(
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"tools.session_search.default_mode=%r is not one of %s — falling back to 'summary'. "
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"(guided requires anchors and cannot be a default.)",
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raw, _VALID_DEFAULT_MODES,
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)
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return "summary"
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return normalised
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# Process-level cache so repeated session_search calls don't re-read YAML.
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# Cleared by tests via _resolve_user_default_mode.cache_clear() when needed.
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import functools # noqa: E402 — local to the cache wrap
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_resolve_user_default_mode = functools.lru_cache(maxsize=1)(_resolve_user_default_mode)
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MAX_SUMMARY_TOKENS = 10000
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def _get_session_search_max_concurrency(default: int = 3) -> int:
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"""Read auxiliary.session_search.max_concurrency with sane bounds."""
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try:
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from hermes_cli.config import load_config
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config = load_config()
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except ImportError:
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return default
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aux = config.get("auxiliary", {}) if isinstance(config, dict) else {}
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task_config = aux.get("session_search", {}) if isinstance(aux, dict) else {}
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if not isinstance(task_config, dict):
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return default
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raw = task_config.get("max_concurrency")
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if raw is None:
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return default
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try:
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value = int(raw)
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except (TypeError, ValueError):
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return default
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return max(1, min(value, 5))
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def _format_timestamp(ts: Union[int, float, str, None]) -> str:
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"""Convert a Unix timestamp (float/int) or ISO string to a human-readable date.
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Returns "unknown" for None, str(ts) if conversion fails.
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"""
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if ts is None:
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return "unknown"
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try:
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if isinstance(ts, (int, float)):
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from datetime import datetime
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dt = datetime.fromtimestamp(ts)
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return dt.strftime("%B %d, %Y at %I:%M %p")
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if isinstance(ts, str):
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if ts.replace(".", "").replace("-", "").isdigit():
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from datetime import datetime
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dt = datetime.fromtimestamp(float(ts))
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return dt.strftime("%B %d, %Y at %I:%M %p")
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return ts
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except (ValueError, OSError, OverflowError) as e:
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# Log specific errors for debugging while gracefully handling edge cases
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logging.debug("Failed to format timestamp %s: %s", ts, e, exc_info=True)
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except Exception as e:
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logging.debug("Unexpected error formatting timestamp %s: %s", ts, e, exc_info=True)
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return str(ts)
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def _format_conversation(messages: List[Dict[str, Any]]) -> str:
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"""Format session messages into a readable transcript for summarization."""
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parts = []
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for msg in messages:
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role = msg.get("role", "unknown").upper()
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content = msg.get("content") or ""
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tool_name = msg.get("tool_name")
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if role == "TOOL" and tool_name:
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# Truncate long tool outputs
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if len(content) > 500:
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content = content[:250] + "\n...[truncated]...\n" + content[-250:]
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parts.append(f"[TOOL:{tool_name}]: {content}")
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elif role == "ASSISTANT":
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# Include tool call names if present
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tool_calls = msg.get("tool_calls")
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if tool_calls and isinstance(tool_calls, list):
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tc_names = []
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for tc in tool_calls:
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if isinstance(tc, dict):
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name = tc.get("name") or tc.get("function", {}).get("name", "?")
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tc_names.append(name)
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if tc_names:
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parts.append(f"[ASSISTANT]: [Called: {', '.join(tc_names)}]")
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if content:
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parts.append(f"[ASSISTANT]: {content}")
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else:
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parts.append(f"[ASSISTANT]: {content}")
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else:
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parts.append(f"[{role}]: {content}")
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return "\n\n".join(parts)
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def _truncate_around_matches(
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full_text: str, query: str, max_chars: int = MAX_SESSION_CHARS
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) -> str:
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"""
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Truncate a conversation transcript to *max_chars*, choosing a window
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that maximises coverage of positions where the *query* actually appears.
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Strategy (in priority order):
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1. Try to find the full query as a phrase (case-insensitive).
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2. If no phrase hit, look for positions where all query terms appear
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within a 200-char proximity window (co-occurrence).
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3. Fall back to individual term positions.
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Once candidate positions are collected the function picks the window
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start that covers the most of them.
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"""
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if len(full_text) <= max_chars:
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return full_text
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text_lower = full_text.lower()
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query_lower = query.lower().strip()
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match_positions: list[int] = []
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# --- 1. Full-phrase search ------------------------------------------------
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phrase_pat = re.compile(re.escape(query_lower))
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match_positions = [m.start() for m in phrase_pat.finditer(text_lower)]
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# --- 2. Proximity co-occurrence of all terms (within 200 chars) -----------
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if not match_positions:
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terms = query_lower.split()
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if len(terms) > 1:
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# Collect every occurrence of each term
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term_positions: dict[str, list[int]] = {}
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for t in terms:
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term_positions[t] = [
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m.start() for m in re.finditer(re.escape(t), text_lower)
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]
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# Slide through positions of the rarest term and check proximity
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rarest = min(terms, key=lambda t: len(term_positions.get(t, [])))
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for pos in term_positions.get(rarest, []):
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if all(
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any(abs(p - pos) < 200 for p in term_positions.get(t, []))
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for t in terms
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if t != rarest
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):
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match_positions.append(pos)
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# --- 3. Individual term positions (last resort) ---------------------------
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if not match_positions:
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terms = query_lower.split()
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for t in terms:
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for m in re.finditer(re.escape(t), text_lower):
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match_positions.append(m.start())
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if not match_positions:
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# Nothing at all — take from the start
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truncated = full_text[:max_chars]
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suffix = "\n\n...[later conversation truncated]..." if max_chars < len(full_text) else ""
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return truncated + suffix
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# --- Pick window that covers the most match positions ---------------------
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match_positions.sort()
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best_start = 0
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best_count = 0
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for candidate in match_positions:
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ws = max(0, candidate - max_chars // 4) # bias: 25% before, 75% after
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we = ws + max_chars
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if we > len(full_text):
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ws = max(0, len(full_text) - max_chars)
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we = len(full_text)
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count = sum(1 for p in match_positions if ws <= p < we)
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if count > best_count:
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best_count = count
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best_start = ws
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start = best_start
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end = min(len(full_text), start + max_chars)
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truncated = full_text[start:end]
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prefix = "...[earlier conversation truncated]...\n\n" if start > 0 else ""
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suffix = "\n\n...[later conversation truncated]..." if end < len(full_text) else ""
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return prefix + truncated + suffix
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async def _summarize_session(
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conversation_text: str, query: str, session_meta: Dict[str, Any]
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) -> Optional[str]:
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"""Summarize a single session conversation focused on the search query."""
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system_prompt = (
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"You are reviewing a past conversation transcript to help recall what happened. "
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"Summarize the conversation with a focus on the search topic. Include:\n"
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"1. What the user asked about or wanted to accomplish\n"
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"2. What actions were taken and what the outcomes were\n"
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"3. Key decisions, solutions found, or conclusions reached\n"
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"4. Any specific commands, files, URLs, or technical details that were important\n"
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"5. Anything left unresolved or notable\n\n"
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"Be thorough but concise. Preserve specific details (commands, paths, error messages) "
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"that would be useful to recall. Write in past tense as a factual recap."
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)
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source = session_meta.get("source", "unknown")
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started = _format_timestamp(session_meta.get("started_at"))
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user_prompt = (
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f"Search topic: {query}\n"
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f"Session source: {source}\n"
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f"Session date: {started}\n\n"
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f"CONVERSATION TRANSCRIPT:\n{conversation_text}\n\n"
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f"Summarize this conversation with focus on: {query}"
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)
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max_retries = 3
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for attempt in range(max_retries):
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try:
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response = await async_call_llm(
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task="session_search",
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messages=[
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{"role": "system", "content": system_prompt},
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||
{"role": "user", "content": user_prompt},
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],
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temperature=0.1,
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max_tokens=MAX_SUMMARY_TOKENS,
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)
|
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content = extract_content_or_reasoning(response)
|
||
if content:
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||
return content
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||
# Reasoning-only / empty — let the retry loop handle it
|
||
logging.warning("Session search LLM returned empty content (attempt %d/%d)", attempt + 1, max_retries)
|
||
if attempt < max_retries - 1:
|
||
await asyncio.sleep(1 * (attempt + 1))
|
||
continue
|
||
return content
|
||
except RuntimeError:
|
||
logging.warning("No auxiliary model available for session summarization")
|
||
return None
|
||
except Exception as e:
|
||
if attempt < max_retries - 1:
|
||
await asyncio.sleep(1 * (attempt + 1))
|
||
else:
|
||
logging.warning(
|
||
"Session summarization failed after %d attempts: %s",
|
||
max_retries,
|
||
e,
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||
exc_info=True,
|
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)
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||
return None
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||
|
||
|
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# Sources that are excluded from session browsing/searching by default.
|
||
# Third-party integrations (Paperclip agents, etc.) tag their sessions with
|
||
# HERMES_SESSION_SOURCE=tool so they don't clutter the user's session history.
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||
_HIDDEN_SESSION_SOURCES = ("tool",)
|
||
|
||
|
||
def _list_recent_sessions(db, limit: int, current_session_id: str = None) -> str:
|
||
"""Return metadata for the most recent sessions (no LLM calls)."""
|
||
try:
|
||
sessions = db.list_sessions_rich(
|
||
limit=limit + 5,
|
||
exclude_sources=list(_HIDDEN_SESSION_SOURCES),
|
||
order_by_last_active=True,
|
||
) # fetch extra to skip current
|
||
|
||
# Resolve current session lineage to exclude it
|
||
current_root = None
|
||
if current_session_id:
|
||
try:
|
||
sid = current_session_id
|
||
visited = set()
|
||
current_root = current_session_id
|
||
while sid and sid not in visited:
|
||
visited.add(sid)
|
||
current_root = sid
|
||
s = db.get_session(sid)
|
||
parent = s.get("parent_session_id") if s else None
|
||
sid = parent if parent else None
|
||
except Exception:
|
||
current_root = current_session_id
|
||
|
||
results = []
|
||
for s in sessions:
|
||
sid = s.get("id", "")
|
||
if current_root and (sid == current_root or sid == current_session_id):
|
||
continue
|
||
# Skip child/delegation sessions (they have parent_session_id)
|
||
if s.get("parent_session_id"):
|
||
continue
|
||
results.append({
|
||
"session_id": sid,
|
||
"title": s.get("title") or None,
|
||
"source": s.get("source", ""),
|
||
"started_at": s.get("started_at", ""),
|
||
"last_active": s.get("last_active", ""),
|
||
"message_count": s.get("message_count", 0),
|
||
"preview": s.get("preview", ""),
|
||
})
|
||
if len(results) >= limit:
|
||
break
|
||
|
||
return json.dumps({
|
||
"success": True,
|
||
"mode": "recent",
|
||
"results": results,
|
||
"count": len(results),
|
||
"message": f"Showing {len(results)} most recent sessions. Use a keyword query to search specific topics.",
|
||
}, ensure_ascii=False)
|
||
except Exception as e:
|
||
logging.error("Error listing recent sessions: %s", e, exc_info=True)
|
||
return tool_error(f"Failed to list recent sessions: {e}", success=False)
|
||
|
||
|
||
def _guided_drill_down(
|
||
db,
|
||
session_id: str,
|
||
around_message_id,
|
||
window: int,
|
||
current_session_id: str = None,
|
||
anchors: Optional[List[Dict[str, Any]]] = None,
|
||
) -> str:
|
||
"""Anchored drill-down for ``mode='guided'`` of ``session_search``.
|
||
|
||
Returns a JSON string carrying one or more windows of messages — each
|
||
centred on a specific message id in a specific session. No FTS5, no
|
||
auxiliary LLM, no 100k-char truncation — N indexed DB lookups (where
|
||
N = number of anchors).
|
||
|
||
Two input shapes (use one):
|
||
|
||
* **Single anchor** (back-compat): pass ``session_id`` and
|
||
``around_message_id`` directly. Internally normalised to a single-
|
||
element ``anchors`` list. Response always carries ``windows``
|
||
as a list, plus the legacy single-anchor fields at the top level
|
||
when there's exactly one anchor.
|
||
|
||
* **Multi-anchor**: pass ``anchors=[{"session_id":..., "around_message_id":...}, ...]``.
|
||
The agent picks the most promising K hits from a wider fast call
|
||
and drills into all of them at once — same conversation in the
|
||
steering loop, more context per turn.
|
||
|
||
Each anchor is validated independently. Per-anchor failures (missing
|
||
session, anchor not in session, current-lineage rejection) become
|
||
error entries inside the response's ``windows`` list rather than
|
||
aborting the whole call. ``window`` is shared across all anchors
|
||
and clamped to ``[1, 20]`` (silent, matches the existing limit-clamp
|
||
pattern).
|
||
"""
|
||
# 1. Normalise inputs into a single ``anchors`` list. Three shapes:
|
||
# (a) anchors= parameter is set (preferred for multi-anchor)
|
||
# (b) session_id + around_message_id (single-anchor back-compat)
|
||
# (c) neither set → user-facing error
|
||
if anchors:
|
||
if not isinstance(anchors, list):
|
||
return tool_error(
|
||
"guided mode: 'anchors' must be a list of {session_id, around_message_id} dicts",
|
||
success=False,
|
||
)
|
||
normalised_anchors = anchors
|
||
elif session_id or around_message_id is not None:
|
||
normalised_anchors = [{
|
||
"session_id": session_id,
|
||
"around_message_id": around_message_id,
|
||
}]
|
||
else:
|
||
return tool_error(
|
||
"guided mode requires either anchors=[...] or session_id+around_message_id "
|
||
"(use match_message_id+session_id from a prior fast-mode hit)",
|
||
success=False,
|
||
)
|
||
|
||
if len(normalised_anchors) == 0:
|
||
return tool_error(
|
||
"guided mode: anchors list is empty (pass at least one {session_id, around_message_id})",
|
||
success=False,
|
||
)
|
||
|
||
# 2. Window clamp (shared across all anchors). Matches the existing
|
||
# limit-clamp pattern (silent).
|
||
if not isinstance(window, int):
|
||
try:
|
||
window = int(window)
|
||
except (TypeError, ValueError):
|
||
window = 5
|
||
window = max(1, min(window, 20))
|
||
|
||
# 3. Helper: resolve to lineage root (used by the current-lineage
|
||
# rejection check below).
|
||
def _resolve_to_parent(sid: str) -> str:
|
||
visited = set()
|
||
cur = sid
|
||
while cur and cur not in visited:
|
||
visited.add(cur)
|
||
try:
|
||
meta = db.get_session(cur)
|
||
if not meta:
|
||
break
|
||
parent = meta.get("parent_session_id")
|
||
if parent:
|
||
cur = parent
|
||
else:
|
||
break
|
||
except Exception as e:
|
||
logging.debug("Error resolving parent for %s: %s", cur, e, exc_info=True)
|
||
break
|
||
return cur
|
||
|
||
current_root = _resolve_to_parent(current_session_id) if current_session_id else None
|
||
|
||
# 4. Drill into each anchor. Per-anchor errors are recorded inline
|
||
# rather than aborting the whole call — the agent can still use
|
||
# successful drills even if one anchor was malformed.
|
||
windows_out: List[Dict[str, Any]] = []
|
||
for raw_anchor in normalised_anchors:
|
||
if not isinstance(raw_anchor, dict):
|
||
windows_out.append({
|
||
"success": False,
|
||
"error": "anchor must be a dict with session_id + around_message_id",
|
||
})
|
||
continue
|
||
|
||
a_sid = raw_anchor.get("session_id")
|
||
a_msg = raw_anchor.get("around_message_id")
|
||
|
||
if not a_sid or not isinstance(a_sid, str) or not a_sid.strip():
|
||
windows_out.append({
|
||
"success": False,
|
||
"error": "anchor missing session_id",
|
||
"anchor": raw_anchor,
|
||
})
|
||
continue
|
||
a_sid = a_sid.strip()
|
||
|
||
try:
|
||
a_msg_id = int(a_msg)
|
||
except (TypeError, ValueError):
|
||
windows_out.append({
|
||
"success": False,
|
||
"error": "anchor missing or non-integer around_message_id",
|
||
"anchor": raw_anchor,
|
||
})
|
||
continue
|
||
|
||
# Current-lineage rejection: per-anchor, so other valid anchors
|
||
# in a multi-anchor call still drill.
|
||
if current_root:
|
||
target_root = _resolve_to_parent(a_sid)
|
||
if target_root and target_root == current_root:
|
||
windows_out.append({
|
||
"success": False,
|
||
"error": "anchor rejects drill-down into the current session lineage — those messages are already in your active context",
|
||
"session_id": a_sid,
|
||
"around_message_id": a_msg_id,
|
||
})
|
||
continue
|
||
|
||
# Session existence check.
|
||
try:
|
||
session_meta = db.get_session(a_sid) or {}
|
||
except Exception as e:
|
||
logging.debug("get_session failed for %s: %s", a_sid, e, exc_info=True)
|
||
session_meta = {}
|
||
if not session_meta:
|
||
windows_out.append({
|
||
"success": False,
|
||
"error": f"session_id not found: {a_sid}",
|
||
"session_id": a_sid,
|
||
"around_message_id": a_msg_id,
|
||
})
|
||
continue
|
||
|
||
# Fetch the window.
|
||
try:
|
||
messages = db.get_messages_around(a_sid, a_msg_id, window=window)
|
||
except Exception as e:
|
||
logging.debug("get_messages_around failed: %s", e, exc_info=True)
|
||
windows_out.append({
|
||
"success": False,
|
||
"error": f"failed to load messages around {a_msg_id} in {a_sid}: {e}",
|
||
"session_id": a_sid,
|
||
"around_message_id": a_msg_id,
|
||
})
|
||
continue
|
||
|
||
# Safety net: the agent (or memory, or a legacy caller) may pair a
|
||
# parent/lineage-root session_id with a message_id that actually
|
||
# lives in a descendant (child) session. Before this commit, fast
|
||
# mode returned exactly that broken pair. We now emit the matching
|
||
# raw sid in fast mode, but guided should remain forgiving for
|
||
# callers that haven't updated yet.
|
||
#
|
||
# Recovery rule: locate the real owning session by message id; if
|
||
# that session is in the same lineage as ``a_sid``, transparently
|
||
# rebind and refetch. Record a warning so the rebind is visible.
|
||
rebind_warning = None
|
||
if not messages:
|
||
owning = None
|
||
# Prefer a helper if SessionDB exposes one (forward-compat).
|
||
try:
|
||
if hasattr(db, "get_session_id_for_message"):
|
||
owning = db.get_session_id_for_message(a_msg_id)
|
||
except Exception as e:
|
||
logging.debug("get_session_id_for_message failed: %s", e, exc_info=True)
|
||
owning = None
|
||
# Fallback: query through SessionDB._conn (the canonical connection).
|
||
if not owning:
|
||
try:
|
||
conn = getattr(db, "_conn", None)
|
||
if conn is not None:
|
||
row = conn.execute(
|
||
"SELECT session_id FROM messages WHERE id = ?",
|
||
(a_msg_id,),
|
||
).fetchone()
|
||
# sqlite3.Row supports indexing; tuple fallback works too.
|
||
owning = row[0] if row else None
|
||
except Exception as e:
|
||
logging.debug("owning-session lookup failed: %s", e, exc_info=True)
|
||
owning = None
|
||
|
||
if owning and owning != a_sid:
|
||
# Check same lineage (walk both up to roots).
|
||
a_root = _resolve_to_parent(a_sid)
|
||
o_root = _resolve_to_parent(owning)
|
||
if a_root and o_root and a_root == o_root:
|
||
try:
|
||
messages = db.get_messages_around(owning, a_msg_id, window=window)
|
||
except Exception as e:
|
||
logging.debug("rebind get_messages_around failed: %s", e, exc_info=True)
|
||
messages = []
|
||
if messages:
|
||
rebind_warning = (
|
||
f"around_message_id {a_msg_id} lives in {owning} "
|
||
f"(child of {a_sid}); rebound transparently"
|
||
)
|
||
# Re-fetch session_meta for the actual owning session.
|
||
try:
|
||
session_meta = db.get_session(owning) or session_meta
|
||
except Exception:
|
||
pass
|
||
a_sid = owning
|
||
|
||
if not messages:
|
||
windows_out.append({
|
||
"success": False,
|
||
"error": f"around_message_id {a_msg_id} not in session_id {a_sid}",
|
||
"session_id": a_sid,
|
||
"around_message_id": a_msg_id,
|
||
})
|
||
continue
|
||
|
||
# Wrap with anchor flag + boundary counts.
|
||
out_messages = []
|
||
messages_before = 0
|
||
messages_after = 0
|
||
for m in messages:
|
||
is_anchor = m.get("id") == a_msg_id
|
||
if not is_anchor and m.get("id", 0) < a_msg_id:
|
||
messages_before += 1
|
||
elif not is_anchor:
|
||
messages_after += 1
|
||
entry = {
|
||
"id": m.get("id"),
|
||
"role": m.get("role"),
|
||
"content": m.get("content"),
|
||
"tool_name": m.get("tool_name"),
|
||
"tool_calls": m.get("tool_calls") or None,
|
||
"tool_call_id": m.get("tool_call_id"),
|
||
"timestamp": m.get("timestamp"),
|
||
}
|
||
if is_anchor:
|
||
entry["anchor"] = True
|
||
# Strip None-valued optional fields to keep payload tight (keep
|
||
# 'content' even if None, since absent-content is meaningful).
|
||
entry = {k: v for k, v in entry.items() if v is not None or k in ("content",)}
|
||
out_messages.append(entry)
|
||
|
||
success_entry = {
|
||
"success": True,
|
||
"session_id": a_sid,
|
||
"around_message_id": a_msg_id,
|
||
"session_meta": {
|
||
"when": _format_timestamp(session_meta.get("started_at")),
|
||
"source": session_meta.get("source"),
|
||
"model": session_meta.get("model"),
|
||
"title": session_meta.get("title"),
|
||
},
|
||
"messages": out_messages,
|
||
"messages_before": messages_before,
|
||
"messages_after": messages_after,
|
||
}
|
||
if rebind_warning:
|
||
success_entry["warning"] = rebind_warning
|
||
windows_out.append(success_entry)
|
||
|
||
# 5. Top-level response shape. ``windows`` is always a list. For
|
||
# single-anchor calls (the common case), we mirror the legacy fields
|
||
# at the top level so existing callers / tests continue to work
|
||
# without branching on len(windows).
|
||
response: Dict[str, Any] = {
|
||
"success": True,
|
||
"mode": "guided",
|
||
"window": window,
|
||
"windows": windows_out,
|
||
"anchor_count": len(windows_out),
|
||
}
|
||
if len(windows_out) == 1:
|
||
only = windows_out[0]
|
||
if only.get("success"):
|
||
response.update({
|
||
"session_id": only["session_id"],
|
||
"around_message_id": only["around_message_id"],
|
||
"session_meta": only["session_meta"],
|
||
"messages": only["messages"],
|
||
"messages_before": only["messages_before"],
|
||
"messages_after": only["messages_after"],
|
||
})
|
||
if only.get("warning"):
|
||
response["warning"] = only["warning"]
|
||
else:
|
||
# Single-anchor failure: surface as a top-level tool_error so
|
||
# callers don't have to dig into the windows array for the
|
||
# error string. Keeps the legacy single-anchor failure shape.
|
||
return tool_error(only.get("error", "guided drill-down failed"), success=False)
|
||
|
||
return json.dumps(response, ensure_ascii=False)
|
||
|
||
|
||
def session_search(
|
||
query: str = "",
|
||
role_filter: str = None,
|
||
limit: int = 3,
|
||
db=None,
|
||
current_session_id: str = None,
|
||
mode: str = "summary",
|
||
# Guided-mode-only parameters: anchored drill-down into one or more
|
||
# session+message pairs. Required when mode='guided', ignored otherwise.
|
||
# Use either the single-anchor pair (session_id + around_message_id) or
|
||
# the multi-anchor list (anchors=[{session_id, around_message_id}, ...]).
|
||
session_id: str = None,
|
||
around_message_id: int = None,
|
||
window: int = 5,
|
||
anchors: list = None,
|
||
) -> str:
|
||
"""
|
||
Search past sessions, or drill into a specific one.
|
||
|
||
Modes:
|
||
* fast — FTS5 snippets + ±1 message context. Cheap discovery.
|
||
* summary — fetch full session(s), truncate to 100k chars, run aux LLM
|
||
recap. Cross-session synthesis at ~30s tool-side cost.
|
||
* guided — anchored drill-down. Caller supplies session_id +
|
||
around_message_id (typically from a prior fast hit's
|
||
match_message_id field) and gets a window of messages
|
||
around the anchor with no LLM call and no truncation.
|
||
"""
|
||
if db is None:
|
||
try:
|
||
from hermes_state import SessionDB
|
||
|
||
db = SessionDB()
|
||
except Exception:
|
||
logging.debug("SessionDB unavailable for session_search", exc_info=True)
|
||
from hermes_state import format_session_db_unavailable
|
||
return tool_error(format_session_db_unavailable(), success=False)
|
||
|
||
# Mode normalisation. ``None`` / empty string / non-string → fall back to
|
||
# the user's configured default (via ~/.hermes/config.yaml, see
|
||
# ``_resolve_user_default_mode``). Defaults to "summary" if unset. We only
|
||
# resolve the user default when the caller didn't pass an explicit mode —
|
||
# an explicit "fast" or "summary" or "guided" wins regardless of config.
|
||
if not isinstance(mode, str) or not mode.strip():
|
||
mode = _resolve_user_default_mode()
|
||
else:
|
||
mode = mode.strip().lower()
|
||
if mode in ("summarized", "summarise", "summarize", "deep"):
|
||
mode = "summary"
|
||
if mode in ("drill", "drilldown", "drill-down", "anchor", "around"):
|
||
mode = "guided"
|
||
if mode not in ("fast", "summary", "guided"):
|
||
mode = "summary"
|
||
|
||
# Guided mode is a different shape: it doesn't search, it drills. Branch
|
||
# before FTS5 so we don't pay for anything we don't use, and so missing-arg
|
||
# validation happens up front.
|
||
if mode == "guided":
|
||
return _guided_drill_down(
|
||
db=db,
|
||
session_id=session_id,
|
||
around_message_id=around_message_id,
|
||
window=window,
|
||
current_session_id=current_session_id,
|
||
anchors=anchors,
|
||
)
|
||
|
||
# Defensive: models (especially open-source) may send non-int limit values
|
||
# (None when JSON null, string "int", or even a type object). Coerce to a
|
||
# safe integer before any arithmetic/comparison to prevent TypeError.
|
||
if not isinstance(limit, int):
|
||
try:
|
||
limit = int(limit)
|
||
except (TypeError, ValueError):
|
||
limit = 3
|
||
limit = max(1, min(limit, 10)) # Clamp to [1, 10]
|
||
|
||
# Recent sessions mode: when query is empty, return metadata for recent sessions.
|
||
# No LLM calls — just DB queries for titles, previews, timestamps.
|
||
if not query or not query.strip():
|
||
return _list_recent_sessions(db, limit, current_session_id)
|
||
|
||
query = query.strip()
|
||
|
||
try:
|
||
# Parse role filter
|
||
role_list = None
|
||
if role_filter and role_filter.strip():
|
||
role_list = [r.strip() for r in role_filter.split(",") if r.strip()]
|
||
|
||
# FTS5 search -- get matches ranked by relevance
|
||
raw_results = db.search_messages(
|
||
query=query,
|
||
role_filter=role_list,
|
||
exclude_sources=list(_HIDDEN_SESSION_SOURCES),
|
||
limit=50, # Get more matches to find unique sessions
|
||
offset=0,
|
||
)
|
||
|
||
if not raw_results:
|
||
return json.dumps({
|
||
"success": True,
|
||
"mode": mode,
|
||
"query": query,
|
||
"results": [],
|
||
"count": 0,
|
||
"message": "No matching sessions found.",
|
||
}, ensure_ascii=False)
|
||
|
||
# Resolve child sessions to their parent — delegation stores detailed
|
||
# content in child sessions, but the user's conversation is the parent.
|
||
def _resolve_to_parent(session_id: str) -> str:
|
||
"""Walk delegation chain to find the root parent session ID."""
|
||
visited = set()
|
||
sid = session_id
|
||
while sid and sid not in visited:
|
||
visited.add(sid)
|
||
try:
|
||
session = db.get_session(sid)
|
||
if not session:
|
||
break
|
||
parent = session.get("parent_session_id")
|
||
if parent:
|
||
sid = parent
|
||
else:
|
||
break
|
||
except Exception as e:
|
||
logging.debug(
|
||
"Error resolving parent for session %s: %s",
|
||
sid,
|
||
e,
|
||
exc_info=True,
|
||
)
|
||
break
|
||
return sid
|
||
|
||
current_lineage_root = (
|
||
_resolve_to_parent(current_session_id) if current_session_id else None
|
||
)
|
||
|
||
# Group by resolved (parent) session_id, dedup, skip the current
|
||
# session lineage. Compression and delegation create child sessions
|
||
# that still belong to the same active conversation.
|
||
#
|
||
# IMPORTANT: we group BY parent (so the user sees one entry per
|
||
# conversation lineage), but we preserve the raw FTS5 session_id on
|
||
# the surviving result. The raw sid is the only sid that pairs
|
||
# validly with ``match_message_id``; rewriting it to the parent
|
||
# produces a "{parent_sid, child_message_id}" handle that guided
|
||
# mode cannot resolve (#regression introduced by the original
|
||
# match_message_id rollout). See the parent_session_id field in
|
||
# fast-mode output for the lineage-root link the user expects to
|
||
# see.
|
||
seen_sessions = {}
|
||
for result in raw_results:
|
||
raw_sid = result["session_id"]
|
||
resolved_sid = _resolve_to_parent(raw_sid)
|
||
# Skip the current session lineage — the agent already has that
|
||
# context, even if older turns live in parent fragments.
|
||
if current_lineage_root and resolved_sid == current_lineage_root:
|
||
continue
|
||
if current_session_id and raw_sid == current_session_id:
|
||
continue
|
||
if resolved_sid not in seen_sessions:
|
||
result = dict(result)
|
||
# Keep raw_sid as session_id; expose lineage root separately.
|
||
result["session_id"] = raw_sid
|
||
if resolved_sid and resolved_sid != raw_sid:
|
||
result["parent_session_id"] = resolved_sid
|
||
seen_sessions[resolved_sid] = result
|
||
if len(seen_sessions) >= limit:
|
||
break
|
||
|
||
if mode == "fast":
|
||
results = []
|
||
for lineage_root, match_info in seen_sessions.items():
|
||
# ``lineage_root`` is the dict key (resolved parent — used for
|
||
# dedup grouping). ``match_info["session_id"]`` is the raw FTS5
|
||
# row's session — the only sid that pairs with
|
||
# ``match_info["id"]`` (the message id). Emit the pair (raw sid +
|
||
# match_message_id) so the agent's follow-up
|
||
# mode='guided' call has a valid {session_id, around_message_id}
|
||
# handle. ``parent_session_id`` (if different) tells the agent
|
||
# which conversation lineage this fragment belongs to.
|
||
hit_sid = match_info.get("session_id") or lineage_root
|
||
try:
|
||
session_meta = db.get_session(lineage_root) or {}
|
||
except Exception:
|
||
session_meta = {}
|
||
snippet = match_info.get("snippet") or ""
|
||
context = match_info.get("context") or []
|
||
if not isinstance(context, list):
|
||
context = []
|
||
entry = {
|
||
"session_id": hit_sid,
|
||
"when": _format_timestamp(
|
||
session_meta.get("started_at") or match_info.get("session_started")
|
||
),
|
||
"source": session_meta.get("source") or match_info.get("source", "unknown"),
|
||
"model": session_meta.get("model") or match_info.get("model") or "unknown",
|
||
"matched_role": match_info.get("role"),
|
||
"match_message_id": match_info.get("id"),
|
||
"title": session_meta.get("title") or None,
|
||
"snippet": snippet,
|
||
"context": context,
|
||
"summary": "[Search hit — summary not generated in fast mode] Use snippet/context fields, or set mode='summary' for LLM-generated recall.",
|
||
}
|
||
# Only emit parent_session_id when the FTS5 row lives in a
|
||
# child of the displayed lineage — keeps the common case
|
||
# (no delegation/compression) tidy.
|
||
parent_sid = match_info.get("parent_session_id")
|
||
if parent_sid and parent_sid != hit_sid:
|
||
entry["parent_session_id"] = parent_sid
|
||
results.append(entry)
|
||
|
||
return json.dumps({
|
||
"success": True,
|
||
"mode": "fast",
|
||
"query": query,
|
||
"results": results,
|
||
"count": len(results),
|
||
"sessions_searched": len(seen_sessions),
|
||
"message": "Fast search returned FTS snippets without LLM summarization. Use mode='summary' for focused summaries when needed.",
|
||
}, ensure_ascii=False)
|
||
|
||
# Prepare all sessions for parallel summarization
|
||
tasks = []
|
||
for session_id, match_info in seen_sessions.items():
|
||
try:
|
||
messages = db.get_messages_as_conversation(session_id)
|
||
if not messages:
|
||
continue
|
||
session_meta = db.get_session(session_id) or {}
|
||
conversation_text = _format_conversation(messages)
|
||
conversation_text = _truncate_around_matches(conversation_text, query)
|
||
tasks.append((session_id, match_info, conversation_text, session_meta))
|
||
except Exception as e:
|
||
logging.warning(
|
||
"Failed to prepare session %s: %s",
|
||
session_id,
|
||
e,
|
||
exc_info=True,
|
||
)
|
||
|
||
# Summarize all sessions in parallel
|
||
async def _summarize_all() -> List[Union[str, Exception]]:
|
||
"""Summarize all sessions with bounded concurrency."""
|
||
max_concurrency = min(_get_session_search_max_concurrency(), max(1, len(tasks)))
|
||
semaphore = asyncio.Semaphore(max_concurrency)
|
||
|
||
async def _bounded_summary(text: str, meta: Dict[str, Any]) -> Optional[str]:
|
||
async with semaphore:
|
||
return await _summarize_session(text, query, meta)
|
||
|
||
coros = [
|
||
_bounded_summary(text, meta)
|
||
for _, _, text, meta in tasks
|
||
]
|
||
return await asyncio.gather(*coros, return_exceptions=True)
|
||
|
||
try:
|
||
# Use _run_async() which properly manages event loops across
|
||
# CLI, gateway, and worker-thread contexts. The previous
|
||
# pattern (asyncio.run() in a ThreadPoolExecutor) created a
|
||
# disposable event loop that conflicted with cached
|
||
# AsyncOpenAI/httpx clients bound to a different loop,
|
||
# causing deadlocks in gateway mode (#2681).
|
||
from model_tools import _run_async
|
||
results = _run_async(_summarize_all())
|
||
except concurrent.futures.TimeoutError:
|
||
logging.warning(
|
||
"Session summarization timed out after 60 seconds",
|
||
exc_info=True,
|
||
)
|
||
return json.dumps({
|
||
"success": False,
|
||
"error": "Session summarization timed out. Try a more specific query or reduce the limit.",
|
||
}, ensure_ascii=False)
|
||
|
||
summaries = []
|
||
for (session_id, match_info, conversation_text, session_meta), result in zip(tasks, results):
|
||
if isinstance(result, Exception):
|
||
logging.warning(
|
||
"Failed to summarize session %s: %s",
|
||
session_id, result, exc_info=True,
|
||
)
|
||
result = None
|
||
|
||
# Prefer resolved parent session metadata over FTS5 match metadata.
|
||
# match_info carries source/model from the *child* session that contained
|
||
# the FTS5 hit; after _resolve_to_parent() the session_id points to the
|
||
# root, so session_meta has the authoritative platform/source for the
|
||
# session the user actually cares about (#15909).
|
||
entry = {
|
||
"session_id": session_id,
|
||
"when": _format_timestamp(
|
||
session_meta.get("started_at") or match_info.get("session_started")
|
||
),
|
||
"source": session_meta.get("source") or match_info.get("source", "unknown"),
|
||
"model": session_meta.get("model") or match_info.get("model"),
|
||
}
|
||
|
||
if result:
|
||
entry["summary"] = result
|
||
else:
|
||
# Fallback: raw preview so matched sessions aren't silently
|
||
# dropped when the summarizer is unavailable (fixes #3409).
|
||
preview = (conversation_text[:500] + "\n…[truncated]") if conversation_text else "No preview available."
|
||
entry["summary"] = f"[Raw preview — summarization unavailable]\n{preview}"
|
||
|
||
summaries.append(entry)
|
||
|
||
return json.dumps({
|
||
"success": True,
|
||
"mode": "summary",
|
||
"query": query,
|
||
"results": summaries,
|
||
"count": len(summaries),
|
||
"sessions_searched": len(seen_sessions),
|
||
}, ensure_ascii=False)
|
||
|
||
except Exception as e:
|
||
logging.error("Session search failed: %s", e, exc_info=True)
|
||
return tool_error(f"Search failed: {str(e)}", success=False)
|
||
|
||
|
||
def check_session_search_requirements() -> bool:
|
||
"""Requires SQLite state database; summary mode also needs an auxiliary model."""
|
||
try:
|
||
from hermes_state import DEFAULT_DB_PATH
|
||
return DEFAULT_DB_PATH.parent.exists()
|
||
except ImportError:
|
||
return False
|
||
|
||
|
||
SESSION_SEARCH_SCHEMA = {
|
||
"name": "session_search",
|
||
"description": (
|
||
"Search your long-term memory of past conversations, browse recent sessions, or drill "
|
||
"into a specific session. This is your recall -- every past session is searchable.\n\n"
|
||
"TWO STARTING MOVES + ONE FOLLOW-UP MOVE:\n"
|
||
"Starting moves (call with a ``query``):\n"
|
||
" • mode='summary' (default) — LLM-generated recaps of the matched sessions. The recall "
|
||
"you usually want for 'what did we decide about X?' questions. ~30s, ~3-4 KB per session.\n"
|
||
" • mode='fast' — FTS5 snippets + 1 message of context, no LLM call. ~10ms, ~1 KB per "
|
||
"session. Use for 'find the latest session about Y' — discovery, not synthesis.\n"
|
||
"Follow-up move (only useful AFTER a starting move identified the right anchor):\n"
|
||
" • mode='guided' — given (session_id, message_id) pairs from prior fast-mode results, "
|
||
"returns a window of raw messages around each anchor. No LLM, no truncation, ~ms latency. "
|
||
"Cannot be a starting move on its own — it needs anchors, which come from fast.\n\n"
|
||
"Browsing recent sessions: call with NO arguments to see what was worked on recently. "
|
||
"Returns titles, previews, timestamps. Zero LLM cost, instant. Start here when the user "
|
||
"asks 'what were we working on' or 'what did we do recently'.\n\n"
|
||
"The default mode is configurable per-user via "
|
||
"``tools.session_search.default_mode: fast`` in ~/.hermes/config.yaml. When no mode is "
|
||
"passed explicitly, that user-configured value applies (then 'summary' as the final "
|
||
"fallback).\n\n"
|
||
"USE THIS PROACTIVELY when:\n"
|
||
"- The user says 'we did this before', 'remember when', 'last time', 'as I mentioned'\n"
|
||
"- The user asks about a topic you worked on before but don't have in current context\n"
|
||
"- The user references a project, person, or concept that seems familiar but isn't in memory\n"
|
||
"- You want to check if you've solved a similar problem before\n"
|
||
"- The user asks 'what did we do about X?' or 'how did we fix Y?'\n\n"
|
||
"Don't hesitate to search when it is actually cross-session -- summary mode is one tool call away. "
|
||
"Better to search and confirm than to guess or ask the user to repeat themselves.\n\n"
|
||
"Search syntax (modes 'fast' and 'summary'): keywords joined with OR for broad recall "
|
||
"(elevenlabs OR baseten OR funding), phrases for exact match (\"docker networking\"), "
|
||
"boolean (python NOT java), prefix (deploy*). "
|
||
"IMPORTANT: Use OR between keywords for best results — FTS5 defaults to AND which misses "
|
||
"sessions that only mention some terms. If a broad OR query returns nothing, try individual "
|
||
"keyword searches in parallel."
|
||
),
|
||
"parameters": {
|
||
"type": "object",
|
||
"properties": {
|
||
"query": {
|
||
"type": "string",
|
||
"description": "Search query (modes 'fast' and 'summary'). Keywords, phrases, or boolean expressions to find in past sessions. Omit this parameter entirely to browse recent sessions instead. Ignored when mode='guided'.",
|
||
},
|
||
"role_filter": {
|
||
"type": "string",
|
||
"description": "Optional: only search messages from specific roles (comma-separated). E.g. 'user,assistant' to skip tool outputs. Ignored when mode='guided'.",
|
||
},
|
||
"limit": {
|
||
"type": "integer",
|
||
"description": "Max sessions to return (default: 3, max: 10). Bump higher (5–10) when the user wants to be in the retrieval loop and pick the right anchor for a guided drill-down. Ignored when mode='guided' (which returns one anchored window per anchor).",
|
||
"default": 3,
|
||
},
|
||
"mode": {
|
||
"type": "string",
|
||
"enum": ["fast", "summary", "guided"],
|
||
"description": (
|
||
"summary (default) — LLM recap of each matched session. fast — FTS5 snippets, "
|
||
"no LLM, ~10ms. guided — given anchors from a prior fast hit, returns raw "
|
||
"message windows; cannot be a starting move (always follows fast or summary). "
|
||
"See the tool description for when to use which."
|
||
),
|
||
"default": "summary",
|
||
},
|
||
"anchors": {
|
||
"type": "array",
|
||
"description": "Required for mode='guided'. List of {session_id, around_message_id} dicts to drill into. Copy session_id and match_message_id verbatim from prior fast-mode results — they pair as a single self-consistent handle. Do NOT substitute parent_session_id (shown for display context only; pairs incorrectly with match_message_id). One anchor is fine for single drills; multiple anchors get drilled in one call and one window per anchor is returned.",
|
||
"items": {
|
||
"type": "object",
|
||
"properties": {
|
||
"session_id": {"type": "string"},
|
||
"around_message_id": {"type": "integer"},
|
||
},
|
||
"required": ["session_id", "around_message_id"],
|
||
},
|
||
},
|
||
"window": {
|
||
"type": "integer",
|
||
"description": "Mode='guided' only. Number of messages to return on each side of each anchor (the anchor itself is always included). Shared across all anchors in a multi-anchor call. Clamped to [1, 20]. Default 5.",
|
||
"default": 5,
|
||
},
|
||
},
|
||
"required": [],
|
||
},
|
||
}
|
||
|
||
|
||
# --- Registry ---
|
||
from tools.registry import registry, tool_error
|
||
|
||
registry.register(
|
||
name="session_search",
|
||
toolset="session_search",
|
||
schema=SESSION_SEARCH_SCHEMA,
|
||
handler=lambda args, **kw: session_search(
|
||
query=args.get("query") or "",
|
||
role_filter=args.get("role_filter"),
|
||
limit=args.get("limit", 3),
|
||
mode=args.get("mode", "summary"),
|
||
session_id=args.get("session_id"),
|
||
around_message_id=args.get("around_message_id"),
|
||
window=args.get("window", 5),
|
||
anchors=args.get("anchors"),
|
||
db=kw.get("db"),
|
||
current_session_id=kw.get("current_session_id")),
|
||
check_fn=check_session_search_requirements,
|
||
emoji="🔍",
|
||
)
|