Files
ComfyAssets-ComfyUI_PromptM…/py/api/lora_integration.py
T
Vito Sansevero d247e4c2e7 fix(lora): recheck the files before the replace and stop an abandoned scan
Review fixes for the staged LoRA import (#221):

- The metadata files are listed and fingerprinted again right before the
  replace transaction, so a file changed, removed or added while the
  downloads ran aborts the import with nothing deleted (System job:
  plan-changed, Review again; legacy scan: an error frame in its own
  words). The tests now change real files behind a held download.
- A legacy scan whose page closes stops staging before its next LoRA and
  keeps its records hold until staging has stopped; CivitAI images are
  written to a temp file beside the cache entry and moved in place, so a
  half-written image is never seen as cached.
- Start refuses with plan-changed when the integration was turned off or
  moved to another install since the review.
- A failed job keeps the skipped count and the names of the LoRAs that
  could not be prepared.
- The replace binds the category instead of one parameter per prompt
  (SQLite's variable limit), /lora/status says whether a detected install
  can be used, and the legacy scan logs expected refusals as warnings.
2026-10-25 08:36:46 -07:00

577 lines
23 KiB
Python

"""LoraManager integration API routes for PromptManager."""
import asyncio
import contextlib
import json
import threading
from aiohttp import web
from ..config_store import ConfigUnreadable, RevisionConflict, get_config_store
from .jobs import LORA_IMPORT_JOB_KIND
# Flags of POST /lora/enable; each must be a JSON boolean when present.
_LORA_FLAGS = ("enabled", "trigger_words_enabled", "clear_civitai_api_key")
_LORA_PATH_ERROR = (
"LoraManager path must be a directory under ComfyUI's custom_nodes "
"whose name contains 'lora'"
)
def _lora_settings_mutation(values):
"""The config commit for a LoRA save: only ``integrations.lora_manager``.
The submitted keys replace their values; other LoRA keys, other
integrations and every other section stay as they are on disk.
"""
def mutate(config):
integrations = config.get("integrations")
integrations = dict(integrations) if isinstance(integrations, dict) else {}
lora = integrations.get("lora_manager")
lora = dict(lora) if isinstance(lora, dict) else {}
lora.update(values)
integrations["lora_manager"] = lora
config["integrations"] = integrations
return config
return mutate
# The admin page's own words for the refusals it can meet (it has no review).
_FILES_CHANGED = (
"The LoRA metadata files changed during the scan; the previous imports "
"were kept. Run the scan again."
)
_IMPORTS_CHANGED = (
"The imported LoRA prompts changed during the scan; the previous imports "
"were kept. Run the scan again."
)
class LoraFilesChanged(Exception):
"""A metadata file changed, appeared or went while the legacy scan staged."""
def _lora_error_frame(message):
"""An import stream's error event, as the admin page's modal reads it.
The modal shows ``status`` and ``progress`` from every frame and closes
on ``type: error``, naming ``message``.
"""
return {"type": "error", "status": message, "progress": 0, "message": message}
def _closed(request):
"""A check (safe off the loop) for whether ``request``'s client left."""
def closed():
transport = request.transport
return transport is None or transport.is_closing()
return closed
class LoraIntegrationMixin:
"""Mixin providing LoraManager detection, scanning, and trigger word endpoints."""
def _register_lora_routes(self, routes):
@routes.get("/prompt_manager/lora/detect")
async def lora_detect_route(request):
return await self.lora_detect(request)
@routes.get("/prompt_manager/lora/status")
async def lora_status_route(request):
return await self.lora_status(request)
@routes.post("/prompt_manager/lora/enable")
async def lora_enable_route(request):
return await self.lora_enable(request)
@routes.post("/prompt_manager/lora/scan")
async def lora_scan_route(request):
return await self.lora_scan(request)
@routes.get("/prompt_manager/lora/trigger-words")
async def lora_trigger_words_route(request):
return await self.lora_trigger_words(request)
@routes.post("/prompt_manager/lora/refresh-cache")
async def lora_refresh_cache_route(request):
return await self.lora_refresh_cache(request)
def _error_response(self, exc: Exception, status: int = 500):
return web.json_response(
{"success": False, "error": self._public_error(exc)}, status=status
)
@staticmethod
def _bad_lora_request(message: str):
return web.json_response({"success": False, "error": message}, status=400)
# ── Detection ────────────────────────────────────────────────────
async def lora_detect(self, request):
"""Auto-detect LoraManager installation."""
try:
from ..lora_utils import detect_lora_manager
path = await self._run_in_executor(detect_lora_manager)
return web.json_response(
{
"success": True,
"detected": path is not None,
"path": self._public_path(path) if path else "",
}
)
except Exception as e:
self.logger.error(f"LoraManager detection failed: {e}")
return self._error_response(e)
# ── Status ───────────────────────────────────────────────────────
async def lora_status(self, request):
"""Get current LoraManager integration status."""
try:
from ..config import IntegrationConfig
from ..lora_utils import (
detect_lora_manager,
get_trigger_cache,
resolve_lora_manager_path,
)
config = IntegrationConfig.get_config()["lora_manager"]
cache = get_trigger_cache()
# Check if the configured path is still valid
detected_path = await self._run_in_executor(
detect_lora_manager, config.get("path", "")
)
# A detected install reached through a link outside custom_nodes is
# found but cannot be enabled (S10 review N5): say which.
usable = bool(detected_path) and (
await self._run_in_executor(resolve_lora_manager_path, detected_path)
is not None
)
return web.json_response(
{
"success": True,
"enabled": config["enabled"],
"path": self._public_path(config["path"]),
"trigger_words_enabled": config["trigger_words_enabled"],
"has_civitai_api_key": bool(config.get("civitai_api_key")),
"detected": detected_path is not None,
"detected_usable": usable,
"detected_path": (
self._public_path(detected_path) if detected_path else ""
),
"trigger_cache_loaded": cache.is_loaded,
}
)
except Exception as e:
self.logger.error(f"LoraManager status check failed: {e}")
return self._error_response(e)
# ── Enable / Disable ─────────────────────────────────────────────
async def _validated_lora_manager_path(self, path):
"""Canonical LoraManager path for ``path`` or ``(None, error_response)``.
The user's path (or, when empty, the auto-detected install) must be a
LoraManager-looking directory that is a direct child of ComfyUI's
``custom_nodes`` with ``lora`` in its name; the trees under it are
later served as images, so nothing outside custom_nodes may be used.
"""
from ..lora_utils import detect_lora_manager, resolve_lora_manager_path
candidate = ""
if path:
candidate = await self._run_in_executor(resolve_lora_manager_path, path)
if candidate is None:
return None, self._bad_lora_request(_LORA_PATH_ERROR)
resolved = await self._run_in_executor(detect_lora_manager, candidate)
if not resolved:
return None, self._bad_lora_request(
"LoraManager not found at the specified path"
)
allowed = await self._run_in_executor(resolve_lora_manager_path, resolved)
if allowed is None:
return None, self._bad_lora_request(_LORA_PATH_ERROR)
return allowed, None
async def lora_enable(self, request):
"""Enable or disable LoraManager integration and save it to config.json.
``expected_revision`` (optional, GET /settings' ``revision``) refuses
a save over a config.json changed meanwhile (``settings-changed``).
The values are committed through the config store first (#220) and
published at runtime only once config.json holds them; a save that
cannot be written reports ``persisted: false`` and changes nothing.
The CivitAI key is never echoed back.
"""
try:
data, error = await self._read_json_body(request)
if error is not None:
return error
for flag in _LORA_FLAGS:
if flag in data and not isinstance(data[flag], bool):
return self._bad_lora_request(f"{flag} must be true or false")
# The System Save row sends the revision it read (#220); the
# legacy page sends none and merges into what is on disk.
expected_revision = data.get("expected_revision")
if expected_revision is not None and not isinstance(expected_revision, str):
return self._bad_lora_request("expected_revision must be a string")
enabled = data.get("enabled", False)
path = data.get("path", "")
trigger_words = data.get("trigger_words_enabled", False)
from ..config import IntegrationConfig
from ..lora_utils import get_trigger_cache
# The key is never echoed back to the UI, so a blank or absent
# field means "unchanged"; clearing is an explicit request.
civitai_key = IntegrationConfig.CIVITAI_API_KEY
submitted_key = data.get("civitai_api_key")
if submitted_key is not None and not isinstance(submitted_key, str):
return self._bad_lora_request("civitai_api_key must be a string")
if data.get("clear_civitai_api_key"):
civitai_key = ""
elif submitted_key and submitted_key.strip():
civitai_key = submitted_key.strip()
if not isinstance(path, str):
return self._bad_lora_request("path must be a string")
# If enabling, validate the path
if enabled:
path, error = await self._validated_lora_manager_path(path)
if error is not None:
return error
values = {
"enabled": enabled,
"path": path,
"trigger_words_enabled": trigger_words,
"civitai_api_key": civitai_key,
}
def publish(_config):
# Under the commit lock, so the last save written is the one
# the runtime keeps.
IntegrationConfig.LORA_MANAGER_ENABLED = enabled
IntegrationConfig.LORA_MANAGER_PATH = path
IntegrationConfig.LORA_TRIGGER_WORDS_ENABLED = trigger_words
IntegrationConfig.CIVITAI_API_KEY = civitai_key
try:
_saved, revision = await self._run_in_executor(
get_config_store().commit,
_lora_settings_mutation(values),
expected_revision=expected_revision,
publish=publish,
)
except (ConfigUnreadable, RevisionConflict, OSError) as exc:
return self._config_commit_failure(exc)
cache = get_trigger_cache()
if enabled and trigger_words and path:
try:
count = await self._run_in_executor(cache.load, path)
self.logger.info(f"Trigger word cache loaded: {count} LoRAs")
except Exception as e:
# Saved and enabled; only the trigger words are missing.
self.logger.warning(f"Trigger word cache could not be loaded: {e}")
cache.clear()
elif not enabled:
cache.clear()
return web.json_response(
{
"success": True,
"enabled": enabled,
"path": self._public_path(path),
"trigger_words_enabled": trigger_words,
"persisted": True,
"revision": revision,
"runtime_applied": True,
"cache_loaded": cache.is_loaded,
}
)
except Exception as e:
self.logger.error(f"LoraManager enable/disable failed: {e}")
return self._error_response(e)
# ── Scan LoRA example images ─────────────────────────────────────
async def lora_scan(self, request):
"""Scan LoraManager metadata and import LoRA info + preview images.
Streams progress as SSE, matching the existing scan pattern. Errors
raised once the stream is open are reported as an ``error`` event.
"""
try:
from ..config import IntegrationConfig
from ..lora_utils import resolve_lora_manager_path
if not IntegrationConfig.LORA_MANAGER_ENABLED:
return self._bad_lora_request("LoraManager integration is not enabled")
lm_path = IntegrationConfig.LORA_MANAGER_PATH
if not lm_path:
return self._bad_lora_request("LoraManager path not configured")
allowed = await self._run_in_executor(resolve_lora_manager_path, lm_path)
if allowed is None:
return self._bad_lora_request(_LORA_PATH_ERROR)
response = web.StreamResponse(
status=200,
reason="OK",
headers={"Content-Type": "text/event-stream"},
)
async def send_progress(data):
line = f"data: {json.dumps(data)}\n\n"
await response.write(line.encode("utf-8"))
# The import replaces prompts and images: a records hold, so it
# never runs beside a scan, restore or tagging job.
busy = self._jobs.blocker(LORA_IMPORT_JOB_KIND, admission="records")
if busy is not None:
await response.prepare(request)
message = f"{busy.title} already running"
await send_progress(_lora_error_frame(message))
await response.write_eof()
return response
async with self._jobs.hold(
LORA_IMPORT_JOB_KIND, "LoRA import (admin page)", admission="records"
) as job:
await response.prepare(request)
try:
await self._lora_scan_stream(
allowed, send_progress, disconnected=_closed(request)
)
except Exception as e:
job.finish("failed")
await self._send_scan_failure(e, send_progress)
with contextlib.suppress(ConnectionError, RuntimeError):
await response.write_eof()
return response
except Exception as e:
self.logger.error(f"LoRA scan failed: {e}")
return self._error_response(e)
async def _send_scan_failure(self, error, send_progress):
"""The error frame for a failed legacy scan; quiet when the page left.
Expected refusals (files or imports changed, saved pairs, nothing to
import) are warnings in the admin page's own words; anything else is
logged with its traceback.
"""
from .. import lora_import
from .lora_import_routes import (
EmptyReplacement,
PairDependencyError,
PlanChanged,
)
if isinstance(error, (ConnectionError, lora_import.ImportCancelled)):
self.logger.info("LoRA scan stopped: the page closed its connection")
return
if isinstance(error, PlanChanged):
message = _IMPORTS_CHANGED
elif isinstance(error, LoraFilesChanged):
message = str(error)
else:
message = self._public_error(error)
if isinstance(
error,
(PlanChanged, LoraFilesChanged, EmptyReplacement, PairDependencyError),
):
self.logger.warning(f"LoRA scan refused: {message}")
else:
self.logger.exception("LoRA scan failed")
with contextlib.suppress(ConnectionError, RuntimeError):
await send_progress(_lora_error_frame(message))
async def _lora_scan_stream(
self, lm_path, send_progress, disconnected=lambda: False
):
"""Import every LoRA under ``lm_path``, reporting through ``send_progress``.
The staged path of the System import (#221, ``lora_import_routes``):
discover, stage every record (downloads into the cache first), then
replace the collection in one transaction. A failure at any stage
raises with the previous imports untouched; an empty replacement of a
non-empty collection is refused (it needs the reviewed import).
"""
from .. import lora_import
await send_progress(
{
"type": "progress",
"status": "Finding LoRA directories...",
"progress": 2,
}
)
files = await self._run_in_executor(lora_import.discover, lm_path)
total = len(files)
await send_progress(
{
"type": "progress",
"status": f"Found {total} LoRA metadata files",
"progress": 5,
"total": total,
}
)
reviewed = await self._run_in_executor(lora_import.fingerprint, files)
events = asyncio.Queue()
state = await self._run_in_executor(
self.db.category_import_state, lora_import.LORA_CATEGORY
)
# Records whose prompt already exists outside the collection are
# linked, not imported (the running counts; the end ones are exact).
known = set()
def on_record(index, record, _staged):
events.put_nowait((index, record))
counts = {"imported": 0}
async def report(index, record):
if record is not None and record["hash"] not in known:
known.add(record["hash"])
existing = await self._run_in_executor(
self.db.existing_prompt_hashes,
[record["hash"]],
lora_import.LORA_CATEGORY,
)
if not existing:
counts["imported"] += 1
status = record["name"] if record else files[index].name
if record and record["images"]:
status += f" ({len(record['images'])} images)"
await send_progress(
{
"type": "progress",
"status": status,
"progress": int(5 + (90 * (index + 1) / max(total, 1))),
"processed": index + 1,
"imported": counts["imported"],
"skipped": index + 1 - counts["imported"],
}
)
# Each record's event is queued (through the loop) before staging
# ends, so reporting until staging is done and then draining the
# queue reports every record in order. I2: when the page goes away
# (its connection closes, or a report cannot be sent) staging stops
# before its next LoRA, and this returns only once it has stopped, so
# the caller's records hold covers every download.
stop = threading.Event()
staging = asyncio.ensure_future(
self.stage_lora_import(
files,
on_record=on_record,
cancelled=lambda: stop.is_set() or disconnected(),
)
)
try:
while not staging.done():
getter = asyncio.ensure_future(events.get())
await asyncio.wait(
{getter, staging}, return_when=asyncio.FIRST_COMPLETED
)
if getter.done():
await report(*getter.result())
else:
getter.cancel()
while not events.empty():
await report(*events.get_nowait())
finally:
stop.set()
with contextlib.suppress(Exception):
await asyncio.shield(staging)
staged = await staging
if not await self.lora_files_unchanged(lm_path, reviewed):
raise LoraFilesChanged(_FILES_CHANGED)
await send_progress(
{
"type": "progress",
"status": "Replacing previous lora-manager imports...",
"progress": 96,
}
)
result = await self.replace_lora_imports(
self.db, staged, expected_ids=state["ids"], allow_empty=False
)
await send_progress(
{
"type": "complete",
"progress": 100,
"total": total,
"imported": result["imported"],
"skipped": total - result["imported"],
}
)
# ── Trigger word endpoints ───────────────────────────────────────
async def lora_trigger_words(self, request):
"""Look up trigger words for a specific LoRA name."""
try:
from ..config import IntegrationConfig
from ..lora_utils import get_trigger_cache
if not IntegrationConfig.LORA_MANAGER_ENABLED:
return self._bad_lora_request("LoraManager integration not enabled")
lora_name = request.query.get("name", "")
if not lora_name:
return self._bad_lora_request("Missing 'name' query parameter")
cache = get_trigger_cache()
if not cache.is_loaded:
lm_path = IntegrationConfig.LORA_MANAGER_PATH
if lm_path:
await self._run_in_executor(cache.load, lm_path)
words = cache.get_trigger_words(lora_name)
return web.json_response(
{"success": True, "lora": lora_name, "trigger_words": words}
)
except Exception as e:
self.logger.error(f"Trigger word lookup failed: {e}")
return self._error_response(e)
async def lora_refresh_cache(self, request):
"""Force-refresh the trigger word cache from disk."""
try:
from ..config import IntegrationConfig
from ..lora_utils import get_trigger_cache
if not IntegrationConfig.LORA_MANAGER_ENABLED:
return self._bad_lora_request("LoraManager integration not enabled")
lm_path = IntegrationConfig.LORA_MANAGER_PATH
if not lm_path:
return self._bad_lora_request("LoraManager path not configured")
cache = get_trigger_cache()
count = await self._run_in_executor(cache.load, lm_path)
return web.json_response(
{"success": True, "loras_with_trigger_words": count}
)
except Exception as e:
self.logger.error(f"Trigger cache refresh failed: {e}")
return self._error_response(e)