mirror of
https://github.com/NousResearch/hermes-agent.git
synced 2026-07-31 19:16:29 +00:00
656 lines
27 KiB
Python
656 lines
27 KiB
Python
"""Session listing/rich rows, export, and import (portability) for SessionDB.
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Mixin contract: this is a plain mixin class consumed by
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``hermes_state.SessionDB``. It defines no ``__init__`` and no state of its
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own; methods access the host's attributes (``self._conn``, ``self.db_path``,
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``self._execute_write`` and other SessionDB methods) established by
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``SessionDB.__init__``. It must never import hermes_state (cycle) — shared
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module-level constants live in hermes_state_common.
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"""
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import logging
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import json
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import time
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from typing import Any, Dict, List, Optional
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from agent.skill_commands import SKILL_SCAFFOLD_SQL_LIKE
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from hermes_state_common import (
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SCHEMA_SQL,
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_PREVIEW_RAW_SELECT,
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_shape_preview,
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)
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# Moved methods logged under the "hermes_state" logger before the split;
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# keep that logger identity so log filtering/capture behavior is unchanged.
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logger = logging.getLogger("hermes_state")
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class SessionPortabilityMixin:
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"""See module docstring — mixin for SessionDB (Port cluster)."""
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@classmethod
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def _compact_session_cols(cls) -> str:
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"""SELECT list for compact_rows: every ``sessions`` column declared in
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SCHEMA_SQL except the ``system_prompt`` blob, aliased with the ``s``
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prefix used by list_sessions_rich/_get_session_rich_row queries."""
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if cls._session_compact_cols_sql is None:
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declared = cls._parse_schema_columns(SCHEMA_SQL)["sessions"]
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cls._session_compact_cols_sql = ", ".join(
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f"s.{name}" for name in declared
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if name not in cls._SESSION_COMPACT_EXCLUDED
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)
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return cls._session_compact_cols_sql
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def distinct_session_cwds(self, include_archived: bool = False) -> List[Dict[str, Any]]:
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"""Distinct non-empty session cwds with usage stats, for repo discovery.
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Aggregates across ALL session history (not a single page), so the desktop
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can surface every git repo the user has worked in — not just the repos
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that happen to be in the currently-loaded recents. Children/branches
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count: a worktree session is still a real workspace signal.
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"""
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where = "cwd IS NOT NULL AND TRIM(cwd) != ''"
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if not include_archived:
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where += " AND archived = 0"
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with self._lock:
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rows = self._conn.execute(
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"SELECT cwd AS cwd, COUNT(*) AS sessions, "
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"MAX(COALESCE(ended_at, started_at, 0)) AS last_active "
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f"FROM sessions WHERE {where} GROUP BY cwd"
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).fetchall()
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return [
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{
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"cwd": r["cwd"],
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"sessions": int(r["sessions"] or 0),
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"last_active": float(r["last_active"] or 0),
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}
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for r in rows
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]
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def list_cron_job_runs(
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self,
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job_id: str,
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limit: int = 20,
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offset: int = 0,
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) -> List[Dict[str, Any]]:
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"""List the run sessions produced by a single cron job, newest first.
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Cron runs are flat, independent sessions whose id is
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``cron_{job_id}_{timestamp}`` (see ``cron/scheduler.run_job``). They are
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never compression roots and never branch, so this deliberately skips the
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``list_sessions_rich`` recursive compression-chain CTE / leading-wildcard
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``id_query`` path — that path seeds from *every* ``source='cron'`` row in
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the DB and only filters to one job's runs after the scan, so it scales
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with the whole cron pile (a heavy history makes the desktop run-history
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endpoint time out before it eventually populates).
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Instead this binds to one job with a ``[prefix, prefix_hi)`` range over
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the id (an index range scan, not a ``%...%`` substring), filters
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``source='cron'``, and orders by ``started_at DESC``. Work scales with
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the requested window, not the total cron history.
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Returns the same enriched row shape as ``list_sessions_rich`` (adds
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``preview`` + ``last_active``) so callers can reuse it.
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"""
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prefix = f"cron_{job_id}_"
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# Half-open upper bound for an index range scan: increment the final
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# byte of the prefix so the range covers exactly the ids that start
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# with ``prefix`` and nothing else. ``prefix`` always ends in '_', but
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# compute it generically rather than hardcoding the successor char.
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prefix_hi = prefix[:-1] + chr(ord(prefix[-1]) + 1)
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query = f"""
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SELECT s.*,
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COALESCE(
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(SELECT {_PREVIEW_RAW_SELECT}
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FROM messages m
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WHERE m.session_id = s.id AND m.role = 'user' AND m.content IS NOT NULL
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ORDER BY m.timestamp, m.id LIMIT 1),
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''
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) AS _preview_raw,
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COALESCE(
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(SELECT MAX(m2.timestamp) FROM messages m2 WHERE m2.session_id = s.id),
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s.started_at
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) AS last_active
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FROM sessions s
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WHERE s.source = 'cron' AND s.id >= ? AND s.id < ?
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ORDER BY s.started_at DESC, s.id DESC
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LIMIT ? OFFSET ?
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"""
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with self._lock:
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cursor = self._conn.execute(query, (prefix, prefix_hi, limit, offset))
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rows = cursor.fetchall()
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runs: List[Dict[str, Any]] = []
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for row in rows:
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s = dict(row)
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s["preview"] = _shape_preview(s.pop("_preview_raw", ""))
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runs.append(s)
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return runs
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def _get_session_rich_row(self, session_id: str, compact_rows: bool = False) -> Optional[Dict[str, Any]]:
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"""Fetch a single session with the same enriched columns as
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``list_sessions_rich`` (preview + last_active). Returns None if the
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session doesn't exist.
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Pass ``compact_rows=True`` to omit the ``system_prompt`` blob (see
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``list_sessions_rich`` for details).
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"""
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# Same read-your-writes guarantee as list_sessions_rich.
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self.flush_token_counts()
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_sel = self._compact_session_cols() if compact_rows else "s.*"
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query = f"""
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SELECT {_sel},
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COALESCE(
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(SELECT {_PREVIEW_RAW_SELECT}
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FROM messages m
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WHERE m.session_id = s.id AND m.role = 'user' AND m.content IS NOT NULL
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ORDER BY m.timestamp, m.id LIMIT 1),
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''
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) AS _preview_raw,
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COALESCE(
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(SELECT MAX(m2.timestamp) FROM messages m2 WHERE m2.session_id = s.id),
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s.started_at
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) AS last_active
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FROM sessions s
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WHERE s.id = ?
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"""
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with self._lock:
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cursor = self._conn.execute(query, (session_id,))
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row = cursor.fetchone()
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if not row:
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return None
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s = dict(row)
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s["preview"] = _shape_preview(s.pop("_preview_raw", ""))
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return s
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def get_session_rich_row(self, session_id: str, compact_rows: bool = False) -> Optional[Dict[str, Any]]:
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"""Public wrapper for :meth:`_get_session_rich_row`.
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Exposes the single-session enriched row (same columns as
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``list_sessions_rich``: preview + last_active) for callers outside
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this module, e.g. the web server's session-search hydration.
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"""
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return self._get_session_rich_row(session_id, compact_rows=compact_rows)
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def list_skill_scaffolded_sessions(self, limit: int = 200) -> List[Dict[str, Any]]:
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"""Titled sessions whose first user turn was a ``/skill`` invocation.
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Those titles were generated from the expanded message, which embeds the
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whole skill body — so they describe the skill rather than the request.
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Returns ``id``, ``title``, and the full first-turn ``content`` so a
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caller can re-derive what the user typed. Newest first.
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"""
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with self._lock:
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rows = self._conn.execute(
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"""
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SELECT s.id, s.title, m.content
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FROM sessions s
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JOIN messages m ON m.id = (
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SELECT m2.id FROM messages m2
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WHERE m2.session_id = s.id AND m2.role = 'user'
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AND m2.content IS NOT NULL
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ORDER BY m2.timestamp, m2.id LIMIT 1
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)
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WHERE s.title IS NOT NULL AND m.content LIKE ?
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ORDER BY s.started_at DESC
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LIMIT ?
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""",
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(SKILL_SCAFFOLD_SQL_LIKE, int(limit)),
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).fetchall()
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return [dict(row) for row in rows]
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def get_first_assistant_text(self, session_id: str) -> str:
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"""The session's first assistant reply as plain text ('' when none).
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Pairs with :meth:`list_skill_scaffolded_sessions` so a re-title can feed
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the titler the same (request, reply) shape the live path uses.
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"""
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with self._lock:
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row = self._conn.execute(
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"SELECT content FROM messages "
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"WHERE session_id = ? AND role = 'assistant' AND content IS NOT NULL "
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"ORDER BY timestamp, id LIMIT 1",
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(session_id,),
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).fetchone()
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if not row:
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return ""
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decoded = self._decode_content(row["content"])
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return decoded if isinstance(decoded, str) else ""
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def export_session(self, session_id: str) -> Optional[Dict[str, Any]]:
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"""Export a single session with all its messages as a dict."""
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session = self.get_session(session_id)
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if not session:
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return None
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messages = self.get_messages(session_id)
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return {**session, "messages": messages}
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def export_session_lineage(self, session_id: str) -> Optional[Dict[str, Any]]:
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"""Export a compression lineage as one logical session dict."""
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lineage_ids = self.get_compression_lineage(session_id)
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if not lineage_ids:
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return None
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segments = []
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for sid in lineage_ids:
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segment = self.export_session(sid)
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if segment:
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segments.append(segment)
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if not segments:
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return None
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base = dict(segments[-1])
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total_messages = sum(len(seg.get("messages") or []) for seg in segments)
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base["segments"] = segments
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base["lineage_session_ids"] = [seg["id"] for seg in segments]
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base["message_count"] = total_messages
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base["messages"] = [msg for seg in segments for msg in (seg.get("messages") or [])]
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return base
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def export_all(self, source: str = None) -> List[Dict[str, Any]]:
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"""
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Export all sessions (with messages) as a list of dicts.
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Suitable for writing to a JSONL file for backup/analysis.
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"""
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sessions = self.search_sessions(source=source, limit=100000)
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results = []
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for session in sessions:
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messages = self.get_messages(session["id"])
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results.append({**session, "messages": messages})
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return results
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@staticmethod
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def _import_text_or_none(value: Any, field: str) -> Optional[str]:
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if value is None:
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return None
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if isinstance(value, str):
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return value
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raise ValueError(f"{field} must be a string")
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@staticmethod
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def _import_json_object_or_none(value: Any, field: str) -> Optional[str]:
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if value is None:
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return None
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if isinstance(value, str):
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try:
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parsed = json.loads(value)
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except json.JSONDecodeError as exc:
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raise ValueError(f"{field} must be valid JSON") from exc
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if not isinstance(parsed, dict):
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raise ValueError(f"{field} must be a JSON object")
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return value
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if not isinstance(value, dict):
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raise ValueError(f"{field} must be a JSON object")
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try:
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return json.dumps(value)
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except (TypeError, ValueError) as exc:
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raise ValueError(f"{field} must be JSON serializable") from exc
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@staticmethod
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def _float_or_none(value: Any) -> Optional[float]:
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if value is None:
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return None
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try:
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return float(value)
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except (TypeError, ValueError):
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return None
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@staticmethod
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def _import_int_or_none(value: Any, field: str) -> Optional[int]:
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if value is None:
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return None
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try:
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return int(value)
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except (TypeError, ValueError) as exc:
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raise ValueError(f"{field} must be an integer") from exc
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@staticmethod
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def _int_or_default(value: Any, default: int = 0) -> int:
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if value is None:
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return default
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try:
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return int(value)
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except (TypeError, ValueError):
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return default
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@staticmethod
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def _reasoning_json_value(value: Any) -> Any:
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if not isinstance(value, str):
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return value
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try:
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return json.loads(value)
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except (json.JSONDecodeError, TypeError):
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return value
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@staticmethod
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def _import_error(index: int, session_id: str, error: str) -> Dict[str, Any]:
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item: Dict[str, Any] = {"index": index, "error": error}
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if session_id:
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item["session_id"] = session_id
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return item
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def import_sessions(self, sessions: List[Dict[str, Any]]) -> Dict[str, Any]:
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"""Import sessions exported by :meth:`export_session` or ``export_all``.
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Existing session IDs are skipped. Imported child sessions keep their
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parent only when that parent already exists or is included in the same
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import payload; otherwise the child is detached so partial imports don't
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fail foreign-key validation. Gateway routing, handoff, rewind, and other
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live runtime state are intentionally reset: this restores conversation
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history, not ownership of a live channel or process.
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"""
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if not isinstance(sessions, list):
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raise ValueError("sessions must be a list")
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if len(sessions) > self._IMPORT_MAX_SESSIONS:
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raise ValueError(
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f"sessions must contain at most {self._IMPORT_MAX_SESSIONS} entries"
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)
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normalized: List[Dict[str, Any]] = []
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errors: List[Dict[str, Any]] = []
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seen_ids: set[str] = set()
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total_messages = 0
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total_bytes = 0
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session_text_fields = (
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"source",
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"user_id",
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"model",
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"system_prompt",
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"end_reason",
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"cwd",
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"git_branch",
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"git_repo_root",
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"billing_provider",
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"billing_base_url",
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"billing_mode",
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"cost_status",
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"cost_source",
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"pricing_version",
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"title",
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)
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message_text_fields = (
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"role",
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"tool_call_id",
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"tool_name",
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"effect_disposition",
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"finish_reason",
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"reasoning",
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"reasoning_content",
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"platform_message_id",
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"message_id",
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)
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for index, raw in enumerate(sessions):
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if not isinstance(raw, dict):
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errors.append(self._import_error(index, "", "session must be an object"))
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continue
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session_id = str(raw.get("id") or "").strip()
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if not session_id:
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errors.append(self._import_error(index, "", "session id is required"))
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continue
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if session_id in seen_ids:
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errors.append(self._import_error(index, session_id, "duplicate session id"))
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continue
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messages = raw.get("messages") or []
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if not isinstance(messages, list):
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errors.append(self._import_error(index, session_id, "messages must be a list"))
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continue
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if len(messages) > self._IMPORT_MAX_MESSAGES_PER_SESSION:
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errors.append(
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self._import_error(
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index,
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session_id,
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"messages exceeds the per-session import limit",
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)
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)
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continue
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if any(not isinstance(msg, dict) for msg in messages):
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errors.append(
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self._import_error(
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index,
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session_id,
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"messages must contain only objects",
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)
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)
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continue
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try:
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session_bytes = len(
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json.dumps(raw, ensure_ascii=False, separators=(",", ":")).encode("utf-8")
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)
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except (TypeError, ValueError):
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errors.append(
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self._import_error(index, session_id, "session must be JSON serializable")
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)
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continue
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if session_bytes > self._IMPORT_MAX_SESSION_BYTES:
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errors.append(
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self._import_error(index, session_id, "session exceeds the import size limit")
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)
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continue
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total_bytes += session_bytes
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if total_bytes > self._IMPORT_MAX_TOTAL_BYTES:
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errors.append(
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self._import_error(index, session_id, "import exceeds the total size limit")
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)
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continue
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try:
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clean_session = dict(raw)
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clean_session["id"] = session_id
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clean_session["model_config"] = self._import_json_object_or_none(
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clean_session.get("model_config"), "model_config"
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)
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clean_session["parent_session_id"] = self._import_text_or_none(
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clean_session.get("parent_session_id"), "parent_session_id"
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)
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for field in session_text_fields:
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clean_session[field] = self._import_text_or_none(
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clean_session.get(field), field
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)
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clean_messages: List[Dict[str, Any]] = []
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for message_index, message in enumerate(messages):
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clean_message = dict(message)
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role = clean_message.get("role")
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if not isinstance(role, str) or not role:
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raise ValueError(f"messages[{message_index}].role must be a non-empty string")
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for field in message_text_fields:
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if field == "role":
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continue
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clean_message[field] = self._import_text_or_none(
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clean_message.get(field), field
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)
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clean_message["token_count"] = self._import_int_or_none(
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clean_message.get("token_count"), "token_count"
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)
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clean_messages.append(clean_message)
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except ValueError as exc:
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errors.append(self._import_error(index, session_id, str(exc)))
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continue
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total_messages += len(clean_messages)
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if total_messages > self._IMPORT_MAX_TOTAL_MESSAGES:
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errors.append(
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self._import_error(
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index,
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session_id,
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"messages exceeds the total import limit",
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)
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)
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continue
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seen_ids.add(session_id)
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normalized.append(
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{"index": index, "session": clean_session, "messages": clean_messages}
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)
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if errors:
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return {
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"ok": False,
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|
"imported": 0,
|
|
"skipped": 0,
|
|
"detached": 0,
|
|
"errors": errors,
|
|
}
|
|
|
|
def _do(conn):
|
|
imported_ids: List[str] = []
|
|
skipped_ids: List[str] = []
|
|
parent_updates: List[tuple[str, str]] = []
|
|
detached = 0
|
|
|
|
for item in normalized:
|
|
raw = item["session"]
|
|
messages = item["messages"]
|
|
session_id = str(raw.get("id") or "").strip()
|
|
exists = conn.execute(
|
|
"SELECT 1 FROM sessions WHERE id = ? LIMIT 1",
|
|
(session_id,),
|
|
).fetchone()
|
|
if exists:
|
|
skipped_ids.append(session_id)
|
|
continue
|
|
|
|
started_at = self._float_or_none(raw.get("started_at"))
|
|
if started_at is None:
|
|
started_at = time.time()
|
|
archived = 1 if raw.get("archived") else 0
|
|
|
|
conn.execute(
|
|
"""INSERT INTO sessions (
|
|
id, source, user_id, model, model_config, system_prompt,
|
|
parent_session_id, started_at, ended_at, end_reason,
|
|
message_count, tool_call_count, input_tokens, output_tokens,
|
|
cache_read_tokens, cache_write_tokens, reasoning_tokens,
|
|
cwd, git_branch, git_repo_root,
|
|
billing_provider, billing_base_url, billing_mode,
|
|
estimated_cost_usd, actual_cost_usd, cost_status, cost_source,
|
|
pricing_version, title, api_call_count, archived
|
|
)
|
|
VALUES (
|
|
:id, :source, :user_id, :model, :model_config,
|
|
:system_prompt, NULL, :started_at, :ended_at,
|
|
:end_reason, 0, 0, :input_tokens, :output_tokens,
|
|
:cache_read_tokens, :cache_write_tokens,
|
|
:reasoning_tokens, :cwd, :git_branch, :git_repo_root,
|
|
:billing_provider, :billing_base_url, :billing_mode,
|
|
:estimated_cost_usd, :actual_cost_usd, :cost_status,
|
|
:cost_source, :pricing_version, :title,
|
|
:api_call_count, :archived
|
|
)""",
|
|
{
|
|
"id": session_id,
|
|
"source": str(raw.get("source") or "import"),
|
|
"user_id": raw.get("user_id"),
|
|
"model": raw.get("model"),
|
|
"model_config": raw.get("model_config"),
|
|
"system_prompt": raw.get("system_prompt"),
|
|
"started_at": started_at,
|
|
"ended_at": self._float_or_none(raw.get("ended_at")),
|
|
"end_reason": raw.get("end_reason"),
|
|
"input_tokens": self._int_or_default(raw.get("input_tokens")),
|
|
"output_tokens": self._int_or_default(raw.get("output_tokens")),
|
|
"cache_read_tokens": self._int_or_default(
|
|
raw.get("cache_read_tokens")
|
|
),
|
|
"cache_write_tokens": self._int_or_default(
|
|
raw.get("cache_write_tokens")
|
|
),
|
|
"reasoning_tokens": self._int_or_default(
|
|
raw.get("reasoning_tokens")
|
|
),
|
|
"cwd": raw.get("cwd"),
|
|
"git_branch": raw.get("git_branch"),
|
|
"git_repo_root": raw.get("git_repo_root"),
|
|
"billing_provider": raw.get("billing_provider"),
|
|
"billing_base_url": raw.get("billing_base_url"),
|
|
"billing_mode": raw.get("billing_mode"),
|
|
"estimated_cost_usd": self._float_or_none(
|
|
raw.get("estimated_cost_usd")
|
|
),
|
|
"actual_cost_usd": self._float_or_none(
|
|
raw.get("actual_cost_usd")
|
|
),
|
|
"cost_status": raw.get("cost_status"),
|
|
"cost_source": raw.get("cost_source"),
|
|
"pricing_version": raw.get("pricing_version"),
|
|
"title": raw.get("title"),
|
|
"api_call_count": self._int_or_default(raw.get("api_call_count")),
|
|
"archived": archived,
|
|
},
|
|
)
|
|
|
|
sanitized_messages: List[Dict[str, Any]] = []
|
|
for msg in messages:
|
|
clean = dict(msg)
|
|
for key in (
|
|
"reasoning_details",
|
|
"codex_reasoning_items",
|
|
"codex_message_items",
|
|
):
|
|
clean[key] = self._reasoning_json_value(clean.get(key))
|
|
sanitized_messages.append(clean)
|
|
|
|
total_messages, total_tool_calls = self._insert_message_rows(
|
|
conn,
|
|
session_id,
|
|
sanitized_messages,
|
|
)
|
|
conn.execute(
|
|
"UPDATE sessions SET message_count = ?, tool_call_count = ? WHERE id = ?",
|
|
(total_messages, total_tool_calls, session_id),
|
|
)
|
|
|
|
parent_id = str(raw.get("parent_session_id") or "").strip()
|
|
if parent_id:
|
|
parent_updates.append((session_id, parent_id))
|
|
imported_ids.append(session_id)
|
|
|
|
parent_by_child = dict(parent_updates)
|
|
|
|
def _would_create_cycle(session_id: str, parent_id: str) -> bool:
|
|
seen = {session_id}
|
|
current = parent_id
|
|
while current:
|
|
if current in seen:
|
|
return True
|
|
seen.add(current)
|
|
if current in parent_by_child:
|
|
current = parent_by_child[current]
|
|
continue
|
|
row = conn.execute(
|
|
"SELECT parent_session_id FROM sessions WHERE id = ? LIMIT 1",
|
|
(current,),
|
|
).fetchone()
|
|
if row is None:
|
|
return False
|
|
current = row["parent_session_id"]
|
|
return False
|
|
|
|
for session_id, parent_id in parent_updates:
|
|
parent_exists = conn.execute(
|
|
"SELECT 1 FROM sessions WHERE id = ? LIMIT 1",
|
|
(parent_id,),
|
|
).fetchone()
|
|
if parent_exists and not _would_create_cycle(session_id, parent_id):
|
|
conn.execute(
|
|
"UPDATE sessions SET parent_session_id = ? WHERE id = ?",
|
|
(parent_id, session_id),
|
|
)
|
|
else:
|
|
# Drop only the closing edge. Later entries can still attach
|
|
# to this now-root session, preserving the acyclic portion
|
|
# of a malformed imported lineage.
|
|
parent_by_child.pop(session_id, None)
|
|
detached += 1
|
|
|
|
return {
|
|
"ok": True,
|
|
"imported": len(imported_ids),
|
|
"skipped": len(skipped_ids),
|
|
"detached": detached,
|
|
"imported_ids": imported_ids,
|
|
"skipped_ids": skipped_ids,
|
|
"errors": [],
|
|
}
|
|
|
|
return self._execute_write(_do)
|