hermes-agent/plugins/disk-cleanup/__init__.py
Teknium a25c8c6a56 docs(plugins): rename disk-guardian to disk-cleanup + bundled-plugins docs
The original name was cute but non-obvious; disk-cleanup says what it
does. Plugin directory, script, state path, log lines, slash command,
and test module all renamed. No user-visible state exists yet, so no
migration path is needed.

New website page "Built-in Plugins" documents the <repo>/plugins/<name>/
source, how discovery interacts with user/project plugins, the
HERMES_DISABLE_BUNDLED_PLUGINS escape hatch, disk-cleanup's hook
behaviour and deletion rules, and guidance on when a plugin belongs
bundled vs. user-installable. Added to the Features → Core sidebar next
to the main Plugins page, with a cross-reference from plugins.md.
2026-04-20 04:46:45 -07:00

316 lines
11 KiB
Python

"""disk-cleanup plugin — auto-cleanup of ephemeral Hermes session files.
Wires three behaviours:
1. ``post_tool_call`` hook — inspects ``write_file`` and ``terminal``
tool results for newly-created paths matching test/temp patterns
under ``HERMES_HOME`` and tracks them silently. Zero agent
compliance required.
2. ``on_session_end`` hook — when any test files were auto-tracked
during the just-finished turn, runs :func:`disk_cleanup.quick` and
logs a single line to ``$HERMES_HOME/disk-cleanup/cleanup.log``.
3. ``/disk-cleanup`` slash command — manual ``status``, ``dry-run``,
``quick``, ``deep``, ``track``, ``forget``.
Replaces PR #12212's skill-plus-script design: the agent no longer
needs to remember to run commands.
"""
from __future__ import annotations
import logging
import re
import shlex
import threading
from pathlib import Path
from typing import Any, Dict, Optional, Set
from . import disk_cleanup as dg
logger = logging.getLogger(__name__)
# Per-task set of "test files newly tracked this turn". Keyed by task_id
# (or session_id as fallback) so on_session_end can decide whether to run
# cleanup. Guarded by a lock — post_tool_call can fire concurrently on
# parallel tool calls.
_recent_test_tracks: Dict[str, Set[str]] = {}
_lock = threading.Lock()
# Tool-call result shapes we can parse
_WRITE_FILE_PATH_KEY = "path"
_TERMINAL_PATH_REGEX = re.compile(r"(?:^|\s)(/[^\s'\"`]+|\~/[^\s'\"`]+)")
# ---------------------------------------------------------------------------
# Helpers
# ---------------------------------------------------------------------------
def _tracker_key(task_id: str, session_id: str) -> str:
return task_id or session_id or "default"
def _record_track(task_id: str, session_id: str, path: Path, category: str) -> None:
"""Record that we tracked *path* as *category* during this turn."""
if category != "test":
return
key = _tracker_key(task_id, session_id)
with _lock:
_recent_test_tracks.setdefault(key, set()).add(str(path))
def _drain(task_id: str, session_id: str) -> Set[str]:
"""Pop the set of test paths tracked during this turn."""
key = _tracker_key(task_id, session_id)
with _lock:
return _recent_test_tracks.pop(key, set())
def _attempt_track(path_str: str, task_id: str, session_id: str) -> None:
"""Best-effort auto-track. Never raises."""
try:
p = Path(path_str).expanduser()
except Exception:
return
if not p.exists():
return
category = dg.guess_category(p)
if category is None:
return
newly = dg.track(str(p), category, silent=True)
if newly:
_record_track(task_id, session_id, p, category)
def _extract_paths_from_write_file(args: Dict[str, Any]) -> Set[str]:
path = args.get(_WRITE_FILE_PATH_KEY)
return {path} if isinstance(path, str) and path else set()
def _extract_paths_from_patch(args: Dict[str, Any]) -> Set[str]:
# The patch tool creates new files via the `mode="patch"` path too, but
# most of its use is editing existing files — we only care about new
# ephemeral creations, so treat patch conservatively and only pick up
# the single-file `path` arg. Track-then-cleanup is idempotent, so
# re-tracking an already-tracked file is a no-op (dedup in track()).
path = args.get("path")
return {path} if isinstance(path, str) and path else set()
def _extract_paths_from_terminal(args: Dict[str, Any], result: str) -> Set[str]:
"""Best-effort: pull candidate filesystem paths from a terminal command
and its output, then let ``guess_category`` / ``is_safe_path`` filter.
"""
paths: Set[str] = set()
cmd = args.get("command") or ""
if isinstance(cmd, str) and cmd:
# Tokenise the command — catches `touch /tmp/hermes-x/test_foo.py`
try:
for tok in shlex.split(cmd, posix=True):
if tok.startswith(("/", "~")):
paths.add(tok)
except ValueError:
pass
# Only scan the result text if it's a reasonable size (avoid 50KB dumps).
if isinstance(result, str) and len(result) < 4096:
for match in _TERMINAL_PATH_REGEX.findall(result):
paths.add(match)
return paths
# ---------------------------------------------------------------------------
# Hooks
# ---------------------------------------------------------------------------
def _on_post_tool_call(
tool_name: str = "",
args: Optional[Dict[str, Any]] = None,
result: Any = None,
task_id: str = "",
session_id: str = "",
tool_call_id: str = "",
**_: Any,
) -> None:
"""Auto-track ephemeral files created by recent tool calls."""
if not isinstance(args, dict):
return
candidates: Set[str] = set()
if tool_name == "write_file":
candidates = _extract_paths_from_write_file(args)
elif tool_name == "patch":
candidates = _extract_paths_from_patch(args)
elif tool_name == "terminal":
candidates = _extract_paths_from_terminal(args, result if isinstance(result, str) else "")
else:
return
for path_str in candidates:
_attempt_track(path_str, task_id, session_id)
def _on_session_end(
session_id: str = "",
completed: bool = True,
interrupted: bool = False,
**_: Any,
) -> None:
"""Run quick cleanup if any test files were tracked during this turn."""
# Drain both task-level and session-level buckets. In practice only one
# is populated per turn; the other is empty.
drained_session = _drain("", session_id)
# Also drain any task-scoped buckets that happen to exist. This is a
# cheap sweep: if an agent spawned subagents (each with their own
# task_id) they'll have recorded into separate buckets; we want to
# cleanup them all at session end.
with _lock:
task_buckets = list(_recent_test_tracks.keys())
for key in task_buckets:
if key and key != session_id:
_recent_test_tracks.pop(key, None)
if not drained_session and not task_buckets:
return
try:
summary = dg.quick()
except Exception as exc:
logger.debug("disk-cleanup quick cleanup failed: %s", exc)
return
if summary["deleted"] or summary["empty_dirs"]:
dg._log(
f"AUTO_QUICK (session_end): deleted={summary['deleted']} "
f"dirs={summary['empty_dirs']} freed={dg.fmt_size(summary['freed'])}"
)
# ---------------------------------------------------------------------------
# Slash command
# ---------------------------------------------------------------------------
_HELP_TEXT = """\
/disk-cleanup — ephemeral-file cleanup
Subcommands:
status Per-category breakdown + top-10 largest
dry-run Preview what quick/deep would delete
quick Run safe cleanup now (no prompts)
deep Run quick, then list items that need prompts
track <path> <category> Manually add a path to tracking
forget <path> Stop tracking a path (does not delete)
Categories: temp | test | research | download | chrome-profile | cron-output | other
All operations are scoped to HERMES_HOME and /tmp/hermes-*.
Test files are auto-tracked on write_file / terminal and auto-cleaned at session end.
"""
def _fmt_summary(summary: Dict[str, Any]) -> str:
base = (
f"[disk-cleanup] Cleaned {summary['deleted']} files + "
f"{summary['empty_dirs']} empty dirs, freed {dg.fmt_size(summary['freed'])}."
)
if summary.get("errors"):
base += f"\n {len(summary['errors'])} error(s); see cleanup.log."
return base
def _handle_slash(raw_args: str) -> Optional[str]:
argv = raw_args.strip().split()
if not argv or argv[0] in ("help", "-h", "--help"):
return _HELP_TEXT
sub = argv[0]
if sub == "status":
return dg.format_status(dg.status())
if sub == "dry-run":
auto, prompt = dg.dry_run()
auto_size = sum(i["size"] for i in auto)
prompt_size = sum(i["size"] for i in prompt)
lines = [
"Dry-run preview (nothing deleted):",
f" Auto-delete : {len(auto)} files ({dg.fmt_size(auto_size)})",
]
for item in auto:
lines.append(f" [{item['category']}] {item['path']}")
lines.append(
f" Needs prompt: {len(prompt)} files ({dg.fmt_size(prompt_size)})"
)
for item in prompt:
lines.append(f" [{item['category']}] {item['path']}")
lines.append(
f"\n Total potential: {dg.fmt_size(auto_size + prompt_size)}"
)
return "\n".join(lines)
if sub == "quick":
return _fmt_summary(dg.quick())
if sub == "deep":
# In-session deep can't prompt the user interactively — show what
# quick cleaned plus the items that WOULD need confirmation.
quick_summary = dg.quick()
_auto, prompt_items = dg.dry_run()
lines = [_fmt_summary(quick_summary)]
if prompt_items:
size = sum(i["size"] for i in prompt_items)
lines.append(
f"\n{len(prompt_items)} item(s) need confirmation "
f"({dg.fmt_size(size)}):"
)
for item in prompt_items:
lines.append(f" [{item['category']}] {item['path']}")
lines.append(
"\nRun `/disk-cleanup forget <path>` to skip, or delete "
"manually via terminal."
)
return "\n".join(lines)
if sub == "track":
if len(argv) < 3:
return "Usage: /disk-cleanup track <path> <category>"
path_arg = argv[1]
category = argv[2]
if category not in dg.ALLOWED_CATEGORIES:
return (
f"Unknown category '{category}'. "
f"Allowed: {sorted(dg.ALLOWED_CATEGORIES)}"
)
if dg.track(path_arg, category, silent=True):
return f"Tracked {path_arg} as '{category}'."
return (
f"Not tracked (already present, missing, or outside HERMES_HOME): "
f"{path_arg}"
)
if sub == "forget":
if len(argv) < 2:
return "Usage: /disk-cleanup forget <path>"
n = dg.forget(argv[1])
return (
f"Removed {n} tracking entr{'y' if n == 1 else 'ies'} for {argv[1]}."
if n else f"Not found in tracking: {argv[1]}"
)
return f"Unknown subcommand: {sub}\n\n{_HELP_TEXT}"
# ---------------------------------------------------------------------------
# Plugin registration
# ---------------------------------------------------------------------------
def register(ctx) -> None:
ctx.register_hook("post_tool_call", _on_post_tool_call)
ctx.register_hook("on_session_end", _on_session_end)
ctx.register_command(
"disk-cleanup",
handler=_handle_slash,
description="Track and clean up ephemeral Hermes session files.",
)