Files
ComfyAssets-ComfyUI_PromptM…/tests/browser/server.py
T
Vito a985af506b test(browser): seed resets on a scratch copy and publish them in one commit (#384) (#388)
* test(browser): seed resets on a scratch copy and publish them in one commit (#384)

The concept and plain resets made hundreds of committed transactions on the
live database; on a slow CI disk they queued behind WAL checkpoint syncs and
took 30+ s. Each reset now copies the live database into a scratch database
(backup API, no syncs), runs the unchanged seeder against it through an API
proxy, and replaces the rows of the tables the seed changed in one live
transaction. A commit by another live connection meanwhile fails the reset.

tests/browser/reset_equivalence.py proves every reset kind leaves the same
rows, files and response as the old path (PM_TEST_SEED_ON_LIVE=1).

* test(browser): empty media folders by a rename, delete them in the background (#384)

With the database commits gone, throttled resets still stalled in rmtree:
unlinking the last fixture's files waits for their pending writeback. Each
reseed now moves the old output and input folders into <root>/reset-trash
and makes empty ones; a background thread deletes the trash, and the
server's cleanup stops it and removes the rest before the temp root goes.

* fix(test): recheck the live data version under the publish's write lock (#384)

A writer whose transaction was open while the seed ran committed before
BEGIN IMMEDIATE returned and its rows were overwritten. The publish now
rechecks data_version under the lock, and restores foreign_keys and
detaches the scratch database on every error path.

* test(browser): keep the reset scratch database in /dev/shm when there is one (#384)

Throttled runs still waited on the runner's disk while creating and
rewriting the scratch database, whose pages were under writeback.

* test(browser): keep the scratch on disk when /dev/shm is short, delete in place after cleanup (#384)

The largest scratch copy is about 8 MB; Docker's default /dev/shm is 64 MB
and shared with the browsers. A reset that empties a folder after the
server's cleanup closed its trash deletes in place instead of starting a
thread nobody stops.

* fix(test): drop the gallery caches only after the reset's rows are published (#384)

The seeders drop the Images listing at their end. Run on the scratch copy,
that drop came before the publish, so a background walk in between could
cache per-file values built from the live database's old rows: CI's
inspector tag chip found 0 of 0 images. The proxy now records the drop
and the seeder makes it after the publish, as the old reset did.

* fix(test): remove /dev/shm reset scratch left by killed browser servers (#384)

A server killed outright never runs its cleanup, and tmpfs keeps the
scratch folder in memory until reboot: the Python suite's server tests
left one per killed server. Scratch folders now carry the owner's pid,
and each new one first removes those whose process is gone (POSIX only).
2026-10-27 17:45:24 +00:00

749 lines
29 KiB
Python

"""Serve production pages and API routes with disposable state for browser tests."""
import argparse
import asyncio
import json
import logging
import os
import shutil
import socket
from pathlib import Path
import sys
import tempfile
import threading
import time
import types
from aiohttp import web
from aiohttp.web_runner import GracefulExit
from PIL import Image
from PIL.PngImagePlugin import PngInfo
from tests.browser.folder_trash import close_trash, replace_folder
from tests.browser.request_hold import register_request_holds
from tests.browser import slow_reset_watch
from tests.browser.fast_reset import SEED_ON_LIVE_ENV, ScratchSeeder
from tests.browser.workspace_activity_fixture import register_activity_commands
from tests.browser.workspace_system_fixture import register_system_commands
from tests.browser.workspace_integrations_fixture import (
register_integrations_commands,
)
from tests.browser.workspace_concept_fixture import (
MAX_EXTRA_IMAGES as CONCEPT_MAX_EXTRA_IMAGES,
MAX_SEEDLESS_IMAGES as CONCEPT_MAX_SEEDLESS_IMAGES,
MAX_EPOCH_SECONDS as CONCEPT_MAX_EPOCH_SECONDS,
seed_workspace_concept,
)
from tests.browser.workspace_visual_fixture import seed_workspace_visual
from tests.browser.workspace_inspector_fixture import seed_workspace_inspector
from tests.browser.workspace_history_fixture import (
capture_workspace_history_zero_outputs,
register_workspace_history_commands,
seed_workspace_history,
)
from tests.browser.workspace_library_editor_fixture import (
register_library_editor_commands,
)
from tests.browser.workspace_vocabulary_fixture import register_vocabulary_commands
from tests.browser.workspace_tagging_fixture import register_tagging_commands
from tests.browser.workspace_review_fixture import register_review_commands
CANONICAL_ROOT = Path(__file__).resolve().parents[2]
CANONICAL_ASSETS = {
"/__test__/canonical/workspace": (
"docs/concepts/workspace/index.html",
"text/html",
),
"/workspace/app.js": ("docs/concepts/workspace/app.js", "text/javascript"),
"/workspace/style.css": ("docs/concepts/workspace/style.css", "text/css"),
"/toolkit/core.js": ("web/js/shared/toolkit/core.js", "text/javascript"),
"/toolkit/controls.css": ("web/js/shared/toolkit/controls.css", "text/css"),
"/vendor/viewer.js": ("web/lib/viewerjs/viewer.min.js", "text/javascript"),
"/vendor/viewer.css": ("web/lib/viewerjs/viewer.min.css", "text/css"),
}
class TestModel:
default_prompt = "Describe the image"
wd14_general_threshold = 0.35
wd14_character_threshold = 0.85
custom_prompt = ""
loaded = None
# Models the Tag image dialog workflows mark as not downloaded.
unavailable: set = set()
# Scored names the concept comparisons answer instead of the fixed list
# (``/__test__/tagging/suggestions``); None keeps the fixed list.
suggestions: list | None = None
# The engine's model table (``py/autotag.py`` MODELS), set at startup.
models_config: dict = {}
def get_models_status(self) -> dict:
return {
name: {
"downloaded": name not in self.unavailable,
"loaded": self.loaded == name,
}
for name in self.models_config
}
def is_model_loaded(self) -> bool:
return self.loaded is not None
def get_loaded_model_type(self) -> str | None:
return self.loaded
def load_model(self, model_type: str, use_gpu: bool = True) -> bool:
self.loaded = model_type
return True
def unload_model(self) -> None:
self.loaded = None
def generate_tags(self, image_path: str, **kwargs: object) -> list[str]:
return ["generated", Path(image_path).parent.parent.name]
def generate_tag_suggestions(
self, image_path: str, *, limit: int, **kwargs: object
) -> list[tuple[str, float | None]]:
"""Fixed scored suggestions (WD14) or unscored ones (language models)."""
scored = self.loaded is not None and self.loaded.startswith("wd14")
if self.suggestions is not None:
return [
(name, confidence if scored else None)
for name, confidence in self.suggestions[:limit]
]
names = ["sandstone", "desert", "arch", "sky", "rock", "dune", "canyon"]
names += [f"tag_{index:02d}" for index in range(100)]
return [
(name, round(0.98 - index * 0.008, 3) if scored else None)
for index, name in enumerate(names[:limit])
]
def download_model(self, model_type: str, progress_callback=None) -> bool:
raise AssertionError("browser tests never download a model")
REVEAL_OUTCOMES = ("opened", "unavailable", "fail")
def register_reveal_stub(routes, api, root: Path):
"""D38: Show in folder never opens a real file manager here.
The API's opener records the resolved path; ``POST /__test__/reveal``
sets the next outcome and ``GET /__test__/reveal`` lists the opened paths.
"""
from utils.file_reveal import OpenerUnavailable, RevealGate
state = {"outcome": "opened", "opened": []}
def opener(path: Path, gallery_root: Path) -> None:
if state["outcome"] == "unavailable":
raise OpenerUnavailable()
if state["outcome"] == "fail":
raise OSError("stubbed start failure")
state["opened"].append(Path(path).relative_to(root.resolve()).as_posix())
api._reveal_opener = opener
# Each click gets an answer here; the cooldown is a unit-tested default.
api._reveal_gate = RevealGate(cooldown=0)
@routes.post("/__test__/reveal")
async def set_reveal_outcome(request: web.Request) -> web.Response:
data = await request.json() if request.can_read_body else None
if (
not isinstance(data, dict)
or set(data) != {"outcome"}
or data["outcome"] not in REVEAL_OUTCOMES
):
raise web.HTTPBadRequest()
state["outcome"] = data["outcome"]
return web.json_response({"success": True})
@routes.get("/__test__/reveal")
async def reveal_calls(request: web.Request) -> web.Response:
return web.json_response({"opened": state["opened"]})
def reset() -> None:
state["outcome"] = "opened"
state["opened"].clear()
return types.SimpleNamespace(reset=reset)
def isolate_lora_manager_settings(root: Path) -> Path:
"""LoraManager's settings lookup reads an empty folder under ``root`` (#355).
The server's temporary root is removed when it exits, and with it this
folder: no page test reads the developer's real LoraManager settings.
"""
folder = root / "lora-manager-settings"
folder.mkdir(exist_ok=True)
os.environ["LORA_MANAGER_SETTINGS_DIR"] = str(folder)
return folder
def create_app(root: Path) -> web.Application:
isolate_lora_manager_settings(root)
os.environ["PROMPT_MANAGER_CONFIG_PATH"] = str(root / "config.json")
os.chdir(root)
app = web.Application()
routes = web.RouteTableDef()
server = types.ModuleType("server")
server.PromptServer = types.SimpleNamespace(
instance=types.SimpleNamespace(app=app, routes=routes)
)
sys.modules["server"] = server
folder_paths = types.ModuleType("folder_paths")
folder_paths.base_path = str(root)
folder_paths.models_dir = str(root / "models")
for name in ("output", "input", "temp", "user"):
directory = root / name
directory.mkdir()
setattr(folder_paths, f"get_{name}_directory", lambda path=directory: str(path))
sys.modules["folder_paths"] = folder_paths
from py.config import GalleryConfig, PromptManagerConfig
PromptManagerConfig.DEFAULT_DB_PATH = str(root / "browser.db")
GalleryConfig.MONITORING_DIRECTORIES = [str(root / "output"), str(root / "input")]
from py.api import PromptManagerAPI
from py import autotag
from utils.hashing import generate_prompt_hash
TestModel.models_config = autotag.MODELS
model = TestModel()
autotag.get_autotag_service = lambda: model
api = PromptManagerAPI()
api.add_routes(routes)
history_commands = register_workspace_history_commands(routes, api, root)
library_editor_commands = register_library_editor_commands(routes, api, root)
register_vocabulary_commands(routes, api, root)
register_tagging_commands(routes, api, root, model)
register_review_commands(routes, api, root)
reveal_stub = register_reveal_stub(routes, api, root)
register_activity_commands(app, routes, api)
register_system_commands(app, routes, api, root)
register_integrations_commands(app, routes, api, root)
request_holds = register_request_holds(app, routes)
slow_reset_watch.install(app, api)
# Resets seed a scratch copy and publish it in one commit (#384).
seeder = ScratchSeeder(
api, root / "reset-scratch", on_live=os.environ.get(SEED_ON_LIVE_ENV) == "1"
)
async def canonical_asset(request: web.Request) -> web.Response:
filename, content_type = CANONICAL_ASSETS[request.path]
return web.Response(
body=(CANONICAL_ROOT / filename).read_bytes(),
content_type=content_type,
headers={"Cache-Control": "no-store", "X-Content-Type-Options": "nosniff"},
)
for path in CANONICAL_ASSETS:
routes.get(path)(canonical_asset)
def seed(
target,
extra_images: int = 0,
include_video: bool = False,
prompt_inspector: bool = False,
native_library: bool = False,
extra_prompts: int = 0,
extra_variants: int = 0,
) -> None:
with target.db.model.get_connection() as conn:
for table in (
"saved_views",
"image_favorites",
"media_review_decisions",
"media_review_items",
"media_image_tags",
"media_annotation_bytes",
"media_annotation_files",
"image_prompt_pairs",
"prompt_pair_tags",
"prompt_pairs",
"generated_images",
"prompt_tags",
"tags",
"prompts",
):
conn.execute(f"DELETE FROM {table}")
for name in ("output", "input"):
replace_folder(root / name)
for index, (directory, text, tag) in enumerate(
[
("output", "Cat portrait", "cats"),
(
"input",
"Cat portrait" if native_library else "Dog landscape",
"dogs",
),
]
):
image_path = root / directory / "shared" / "same.png"
image_path.parent.mkdir(exist_ok=True)
info = PngInfo()
info.add_text(
"prompt",
json.dumps(
{"1": {"class_type": "CLIPTextEncode", "inputs": {"text": text}}}
),
)
with Image.new("RGB", (64, 64), (index * 255, 64, 128)) as image:
image.save(image_path, pnginfo=info)
if prompt_inspector or native_library:
graph = {
"1": {"class_type": "CLIPTextEncode", "inputs": {"text": text}},
"2": {
"class_type": "CLIPTextEncode",
"inputs": {
"text": "blurry, watermark" if index == 0 else "low quality"
},
},
"3": {
"class_type": "KSampler",
"inputs": {"positive": ["1", 0], "negative": ["2", 0]},
},
"4": {"class_type": "SaveImage", "inputs": {"images": ["3", 0]}},
}
info = PngInfo()
info.add_text("prompt", json.dumps(graph))
with Image.new("RGB", (64, 64), (index * 255, 64, 128)) as image:
image.save(image_path, pnginfo=info)
stamp = time.time() - index * 10
os.utime(image_path, (stamp, stamp))
pid = target.db.save_prompt(
text, tags=[tag], prompt_hash=generate_prompt_hash(text)
)
target.db.link_image_to_prompt(pid, str(image_path))
if index == 0:
video_prompt_id = pid
for number in range(extra_images):
extra = root / directory / "bulk" / f"{number:04}.png"
extra.parent.mkdir(exist_ok=True)
shutil.copyfile(image_path, extra)
target.db.link_image_to_prompt(pid, str(extra))
if native_library:
positive = target.db.get_prompt_by_hash(
generate_prompt_hash("Cat portrait")
)
positive_id = positive["id"]
target.db.update_prompt_metadata(
positive_id, category="Animals", tags=["cats", "studio"]
)
variants = []
for index, negative in enumerate(
["blurry, watermark", "low quality", "low contrast", ""]
):
pair_id = target.db.save_prompt_pair(
"Cat portrait",
negative,
title=f"Portrait variant {index + 1}",
category="Portraits" if index == 0 else "Experiments",
tags=["studio"] if index == 0 else ["outdoors"],
)
variants.append(pair_id)
with target.db.model.get_connection() as conn:
images = conn.execute(
"SELECT id FROM generated_images WHERE prompt_id=? ORDER BY id",
(positive_id,),
).fetchall()
for index, image in enumerate(images[:2]):
target.db.link_image_to_pair(
variants[index], image["id"], {"source": "fixture", "anchor": index}
)
target.db.link_image_to_pair(
variants[0], images[0]["id"], {"source": "fixture second evidence"}
)
target.db.record_prompt_pair_use(variants[0], times=3)
for number in range(extra_variants):
target.db.save_prompt_pair(
"Cat portrait", f"Negative extra {number:04}"
)
legacy = root / "output" / "legacy-unassigned.png"
shutil.copyfile(root / "output" / "shared" / "same.png", legacy)
target.db.link_image_to_prompt(positive_id, str(legacy))
target.db.save_prompt("Dog landscape", category="Animals", tags=["dogs"])
target.db.save_prompt_pair("Dual role portrait", "Cat portrait")
for number in range(extra_prompts):
target.db.save_prompt(
f"Library extra {number:04}", category="Bulk", tags=["bulk"]
)
if prompt_inspector:
for name, parameters in (
(
"empty-negative.png",
"Explicit empty negative\nNegative prompt: \n"
"Steps: 20, Sampler: Euler",
),
("uncertain.png", None),
):
info = PngInfo()
if parameters:
info.add_text("parameters", parameters)
with Image.new("RGB", (64, 64), (100, 80, 120)) as image:
image.save(root / "output" / name, pnginfo=info)
os.utime(root / "output" / name, (time.time() - 100, time.time() - 100))
from py.api.thumbnail_settings import ThumbnailSettings
# 150 px previews in the default format (#317 thumbnail settings).
target._generate_gallery_thumbnails_sync(
target._get_all_output_dirs(), ThumbnailSettings("webp", 80, 150)
)
if include_video:
# Seed after thumbnail generation to exercise a real unthumbnailed video.
video = root / "output" / "clip.webm"
shutil.copyfile(
Path(__file__).resolve().parents[1] / "fixtures" / "tiny.webm", video
)
target.db.link_image_to_prompt(video_prompt_id, str(video))
target.invalidate_gallery_cache()
history_fixture = None
@routes.post("/__test__/history/capture-zero-outputs")
async def capture_history_outputs(request: web.Request) -> web.Response:
data = await request.json() if request.can_read_body else None
if (
not isinstance(data, dict)
or set(data) != {"run_id"}
or history_fixture is None
or data["run_id"] not in history_fixture["runs"].values()
):
raise web.HTTPBadRequest()
captured = await api._run_in_executor(
capture_workspace_history_zero_outputs, api, data["run_id"]
)
return web.json_response({"success": captured})
@routes.post("/__test__/reset")
async def reset(request: web.Request) -> web.Response:
nonlocal history_fixture
request_holds.release()
# No preview queued by the last test may land in the new fixture.
await api._run_in_executor(api.close_auto_thumbnails)
library_editor_commands.reset()
data = await request.json() if request.can_read_body else {}
if not isinstance(data, dict):
raise web.HTTPBadRequest()
chronological_history = data.get("chronological_history", False)
history_runs = data.get("history_runs", 0)
if (
not isinstance(chronological_history, bool)
or isinstance(history_runs, bool)
or not isinstance(history_runs, int)
or not 0 <= history_runs <= 1200
or (not chronological_history and "history_runs" in data)
or (
chronological_history
and set(data) - {"chronological_history", "history_runs"}
)
):
raise web.HTTPBadRequest()
if chronological_history:
manifest = await api._run_in_executor(
seeder.run,
lambda target: seed_workspace_history(
target, root, history_runs=history_runs
),
)
history_fixture = manifest
return web.json_response({"success": True, **manifest})
history_commands.reset()
reveal_stub.reset()
workspace_visual = data.get("workspace_visual", False)
full_inspector = data.get("full_inspector", False)
extra = data.get("extra_images", 0)
include_video = data.get("include_video", False)
prompt_inspector = data.get("prompt_inspector", False)
native_library = data.get("native_library", False)
extra_prompts = data.get("extra_prompts", 0)
extra_variants = data.get("extra_variants", 0)
if (
not isinstance(workspace_visual, bool)
or not isinstance(full_inspector, bool)
or (
full_inspector
and (
workspace_visual
or prompt_inspector
or native_library
or extra_prompts != 0
or extra_variants != 0
)
)
or (
workspace_visual
and any(
key in data
for key in (
"extra_images",
"include_video",
"prompt_inspector",
"native_library",
"extra_prompts",
"extra_variants",
"full_inspector",
)
)
)
or isinstance(extra, bool)
or not isinstance(extra, int)
or not 0 <= extra <= 200
or not isinstance(include_video, bool)
or not isinstance(prompt_inspector, bool)
or not isinstance(native_library, bool)
or isinstance(extra_prompts, bool)
or not isinstance(extra_prompts, int)
or not 0 <= extra_prompts <= 200
or isinstance(extra_variants, bool)
or not isinstance(extra_variants, int)
or not 0 <= extra_variants <= 200
):
raise web.HTTPBadRequest()
if workspace_visual:
history_fixture = None
await api._run_in_executor(
seeder.run, lambda target: seed_workspace_visual(target, root)
)
return web.json_response({"success": True})
if full_inspector:
history_fixture = None
await api._run_in_executor(
seeder.run,
lambda target: seed_workspace_inspector(
target, root, extra_images=extra, include_video=include_video
),
)
return web.json_response({"success": True})
history_fixture = None
await api._run_in_executor(
seeder.run,
lambda target: seed(
target,
extra,
include_video,
prompt_inspector,
native_library,
extra_prompts,
extra_variants,
),
)
return web.json_response({"success": True})
@routes.post("/__test__/concept/reset")
async def concept_reset(request: web.Request) -> web.Response:
"""Seed the concept-shaped fixture (D30); only a bounded image count."""
nonlocal history_fixture
data = await request.json() if request.can_read_body else {}
limits = {
"extra_images": CONCEPT_MAX_EXTRA_IMAGES,
"seedless_images": CONCEPT_MAX_SEEDLESS_IMAGES,
}
if (
request.query
or not isinstance(data, dict)
or set(data) - set(limits) - {"short_seedless", "now"}
or not isinstance(data.get("short_seedless", False), bool)
# A chosen "now" (epoch seconds) pins every time the fixture writes.
or (
"now" in data
and (
isinstance(data["now"], bool)
or not isinstance(data["now"], (int, float))
or not 0 < data["now"] < CONCEPT_MAX_EPOCH_SECONDS
)
)
or any(
isinstance(data.get(key, 0), bool)
or not isinstance(data.get(key, 0), int)
or not 0 <= data.get(key, 0) <= limit
for key, limit in limits.items()
)
):
raise web.HTTPBadRequest()
history_commands.reset()
library_editor_commands.reset()
reveal_stub.reset()
history_fixture = None
manifest = await api._run_in_executor(
seeder.run,
lambda target: seed_workspace_concept(
target,
root,
extra_images=data.get("extra_images", 0),
seedless_images=data.get("seedless_images", 0),
short_seedless=data.get("short_seedless", False),
now=data.get("now"),
),
)
return web.json_response({"success": True, **manifest})
@routes.post("/__test__/saved-views/raw")
async def insert_raw_saved_view(request: web.Request) -> web.Response:
"""Store a view row as an older build wrote it, bypassing the API's rules."""
data = await request.json()
if (
not isinstance(data, dict)
or set(data) != {"page", "name", "state"}
or not all(isinstance(data[key], str) for key in data)
):
raise web.HTTPBadRequest()
def insert() -> int:
with api.db.model.get_connection() as conn:
return conn.execute(
"INSERT INTO saved_views (page, name, state, position, "
"created_at, updated_at) VALUES (?, ?, ?, 0, 'x', 'x')",
(data["page"], data["name"], data["state"]),
).lastrowid
return web.json_response(
{"success": True, "id": await api._run_in_executor(insert)}
)
@routes.post("/__test__/add-nested-image")
async def add_nested_image(request: web.Request) -> web.Response:
destination = root / "output" / "project" / "day" / "new-output.png"
destination.parent.mkdir(parents=True, exist_ok=True)
shutil.copyfile(root / "output" / "shared" / "same.png", destination)
return web.json_response({"success": True})
@routes.post("/__test__/add-local-inspect-file")
async def add_local_inspect_file(request: web.Request) -> web.Response:
"""Serve one committed Inspect fixture from the output folder.
The local Inspect page reads a chosen file in the browser; its page
workflow compares that rail with the Images viewer for the same bytes.
Only a committed fixture name is accepted.
"""
data = await request.json() if request.can_read_body else None
fixtures = CANONICAL_ROOT / "tests" / "fixtures"
allowed = {
path.name: path
for folder in ("inspection_parity", "local-inspect")
for path in (fixtures / folder).iterdir()
if path.suffix.lower() in {".png", ".jpg", ".webp", ".webm", ".mp4"}
}
if (
not isinstance(data, dict)
or set(data) != {"name"}
or data["name"] not in allowed
):
raise web.HTTPBadRequest()
destination = root / "output" / "local-inspect" / data["name"]
destination.parent.mkdir(parents=True, exist_ok=True)
shutil.copyfile(allowed[data["name"]], destination)
return web.json_response({"success": True})
@routes.get("/api/settings/Comfy.ColorPalette")
async def palette(request: web.Request) -> web.Response:
return web.json_response("dark")
async def cleanup(application: web.Application) -> None:
# A scan of an ambiguous fixture file captures it for Needs review.
api.close_annotation_captures()
seeder.close()
api.db.close_all()
# Old media folders still waiting for deletion go before the temp root.
close_trash(root)
seed(api)
# Open Needs review change streams end first, as on the real host.
app.on_shutdown.append(api.close_review_events)
app.on_cleanup.append(cleanup)
app.add_routes(routes)
return app
HOST = "127.0.0.1"
PORT_ANNOUNCEMENT = "PM_TEST_SERVER_PORT="
def bind_listener(port: int) -> socket.socket:
"""Bind the server's socket before the app is built.
``port`` 0 lets the OS choose a free port, which this process then holds,
so parallel launchers never race for one between choosing and binding.
"""
listener = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
try:
if port and os.name != "nt":
# aiohttp's own default on POSIX; on Windows it would let a
# second process share the port.
listener.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
listener.bind((HOST, port))
listener.listen(128)
except OSError:
listener.close()
raise
return listener
def _graceful_exit() -> None:
raise GracefulExit()
def exit_when_stdin_closes(loop: asyncio.AbstractEventLoop) -> threading.Thread:
"""Stop the app gracefully once stdin reaches end of file.
The launcher keeps the write end of this process's stdin pipe, and the OS
closes it however the launcher dies, SIGKILL included. GracefulExit runs
aiohttp's cleanup (closing the database) and lets the temp root be removed,
on every OS, where a signal from a dead parent would not.
"""
def watch() -> None:
while sys.stdin.buffer.read(65536):
pass
loop.call_soon_threadsafe(_graceful_exit)
thread = threading.Thread(target=watch, name="stdin-eof", daemon=True)
thread.start()
return thread
def close_owned_log_files() -> None:
"""Close Prompt Manager's own log handlers before the temp root goes.
The logs live in the library's data folder (#249 S6b), which for this
server is <root>/user/__promptmanager; Windows cannot remove a file
this process still has open.
"""
for handler in logging.getLogger("prompt_manager").handlers[:]:
if getattr(handler, "_prompt_manager_owned", False) is True:
handler.close()
def main(argv: list[str] | None = None) -> None:
parser = argparse.ArgumentParser()
parser.add_argument(
"--port", type=int, default=8765, help="0 binds an OS-chosen free port"
)
parser.add_argument(
"--exit-on-stdin-eof",
action="store_true",
help="shut down when stdin closes (the launcher's parent-death guard)",
)
args = parser.parse_args(argv)
listener = bind_listener(args.port)
# One machine-readable line tells the launcher which port this process holds.
print(f"{PORT_ANNOUNCEMENT}{listener.getsockname()[1]}", flush=True)
loop = asyncio.new_event_loop()
if args.exit_on_stdin_eof:
exit_when_stdin_closes(loop)
original_cwd = os.getcwd()
with tempfile.TemporaryDirectory(prefix="pm-browser-") as directory:
try:
web.run_app(create_app(Path(directory).resolve()), sock=listener, loop=loop)
finally:
# create_app works inside the root; Windows cannot remove a process's cwd.
os.chdir(original_cwd)
close_owned_log_files()
if __name__ == "__main__":
main()