Files
ComfyAssets-ComfyUI_PromptM…/tests/test_thumbnail_jobs.py
T
Vito fc3266d455 fix(thumbnails): generate thumbnails automatically and use them everywhere (#316)
* fix(thumbnails): generate thumbnails automatically and use them everywhere

New outputs never got a preview, so the workspace grid loaded full-size
originals (844 of 19,907 images on a live install, exactly the newest).

- Listings always give images and videos a thumbnail URL; a missing
  preview is made by the serve route on first view (bounded, single
  flight per file) and falls back to the original, remembering files
  that cannot be decoded.
- The image monitor queues each settled output's preview on one
  background worker that follows Worker threads.
- A scan that leaves 200 or more previews missing starts the visible
  thumbnail job; fewer go through the worker.
- Automatic previews wait for a restore, a duplicate removal, a sources
  change, the gallery's clear and exclusive jobs.
- The inspector cover uses the preview; the Overview row counts
  previews that failed.

* fix(thumbnails): keep the video fallback tested and stop the preview worker before cleanup

A video listed without a preview still renders its own element and is
released on refresh. Test teardowns and the browser reset stop the
automatic preview worker before the temp tree goes, so no preview lands
after cleanup (Windows). TESTING.md documents automatic previews.

* fix(thumbnails): admit previews on the loop and never send a video to an img

Final review fixes for automatic previews:
- A video preview that cannot be made is the placeholder frame (no-store),
  never the video; OpenCV failures fall through to ffmpeg and the
  placeholder. Cards and the inspector cover swap back to the video
  element when the preview image fails.
- View requests are admitted on the event loop (3 writers, one flight per
  file, at most 64 waiting; past that the fallback at once). Writes run on
  a small dedicated pool, never the default executor. The history route
  shares the admission, flight key and link checks.
- Drive, UNC, empty and dot segments are refused as text; the folder
  listing runs inside the admission.
- Holds are checked after the slot and again before the rename; only
  decode failures are remembered.
- Bounded, logged shutdown: ffmpeg is killed, no worker restarts after
  cleanup, and a reload stops the old worker.
- The listing says whether the preview file exists (thumbnail_ready) for
  the legacy gallery's dot; media in a nested thumbnails folder keeps its
  original; file names the server quotes match in the inspector.

* fix(thumbnails): cover the image fallback card and document the admission

An image listed without a preview (a nested thumbnails folder) still
shows its original; TESTING.md describes the view admission, the video
placeholder, the holds before the rename and the bounded shutdown.

* fix(thumbnails): let an idle preview worker leave and fit case-insensitive filesystems

The capture worker exits once its queue is empty, so no thread outlives
its work; the next output starts a fresh one. The mixed-case source test
expects no folder listing where the exact name already resolves (macOS,
Windows).

* fix(thumbnails): answer shared flights with the outcome only and restart a failed worker

The history and serve routes share a flight key, so a flight now answers
only the ensure outcome whichever route started it; the serve route
derives the preview path and, for a fallback, looks its source up again
on the view pool. A view joining a history flight no longer gets a 500
or an image answered with the video placeholder.

The capture worker clears its running state however its loop ends, and a
worker that cannot start leaves the file queued for the next enqueue.
2026-10-24 08:35:14 -07:00

850 lines
33 KiB
Python

"""Thumbnail generation as an Activity job (#249 System S5, Task 12).
``GET /prompt_manager/images/thumbnails/plan`` counts what a run would do and
writes nothing. ``POST /prompt_manager/jobs/thumbnails`` starts the
``thumbnails`` job (admission ``guarded``, cancellable at a file boundary).
The legacy gallery stream ``POST /images/generate-thumbnails/progress`` starts
or attaches to that job and streams its unchanged events from it, so a client
that goes away no longer stops the work.
Ordering is driven by threading/asyncio events, never by timers.
"""
import asyncio
import hashlib
import os
import sys
import threading
import unittest
from pathlib import Path
from unittest.mock import patch
sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
try:
from tests.test_api_images import ThumbnailTestCase, make_png, parse_sse
except ImportError: # discovered with tests/ as the top-level directory
from test_api_images import ThumbnailTestCase, make_png, parse_sse
from PIL import Image # noqa: E402
import py.api.images as images_module # noqa: E402
from py.api.thumbnail_jobs import thumbnail_options # noqa: E402
from py.config import PromptManagerConfig # noqa: E402
PLAN_URL = "/prompt_manager/images/thumbnails/plan"
JOB_URL = "/prompt_manager/jobs/thumbnails"
def _tree_state(root):
"""{relative path: (size, mtime_ns, sha256)} of every file under ``root``."""
state = {}
for folder, _dirs, files in os.walk(root):
for name in files:
path = Path(folder) / name
data = path.read_bytes()
stat = path.stat()
state[path.relative_to(root).as_posix()] = (
stat.st_size,
stat.st_mtime_ns,
hashlib.sha256(data).hexdigest(),
)
return state
class ThumbnailJobCase(ThumbnailTestCase):
"""Helpers: start, gate and wait for thumbnail jobs."""
async def _start(self, **body):
resp = await self.client.post(JOB_URL, json=body)
return resp.status, await resp.json()
async def _finished(self, job_id):
job = self.api._jobs.get(job_id)
await asyncio.wait_for(job.task, 10)
return job
def _gate_generation(self):
"""Block every file in the worker until released; returns (entered, release)."""
entered = threading.Event()
release = threading.Event()
original = self.api._generate_one
def gated(*args, **kwargs):
entered.set()
release.wait(10)
return original(*args, **kwargs)
self.api._generate_one = gated
self.addCleanup(release.set)
return entered, release
async def _wait(self, event):
loop = asyncio.get_running_loop()
self.assertTrue(await loop.run_in_executor(None, event.wait, 10))
@staticmethod
def _watch_subscribers(job):
"""(subscribed, left): threading events for a stream joining or leaving."""
subscribed, left = threading.Event(), threading.Event()
class Watched(set):
def add(self, item):
super().add(item)
subscribed.set()
def discard(self, item):
super().discard(item)
left.set()
job._subscribers = Watched(job._subscribers)
return subscribed, left
def _status_lines(self):
"""Every status line any job is given, in order."""
from py.api.jobs import Job
lines = []
original = Job.update
def update(job, **kwargs):
if kwargs.get("status_line") is not None:
lines.append(kwargs["status_line"])
return original(job, **kwargs)
patcher = patch.object(Job, "update", update)
patcher.start()
self.addCleanup(patcher.stop)
return lines
def _one_worker(self):
original = PromptManagerConfig.WORKER_THREADS
PromptManagerConfig.WORKER_THREADS = 1 # batches of 4
self.addCleanup(setattr, PromptManagerConfig, "WORKER_THREADS", original)
def _run_scan(self):
gate = asyncio.Event()
async def runner(job):
await gate.wait()
job = self.api._jobs.start(
"scan", "Scan for metadata", admission="records", scope={}, runner=runner
)
async def release():
gate.set()
await asyncio.wait_for(job.task, 5)
self.addAsyncCleanup(release)
return job
class TestThumbnailPlan(ThumbnailJobCase):
async def test_plan_is_read_only_and_counts_cap(self):
for name in ("a", "b", "c"):
make_png(self.output_dir / f"{name}.png", size=(64, 64))
fresh = make_png(self._thumb_path("a"))
source_time = (self.output_dir / "a.png").stat().st_mtime
os.utime(fresh, (source_time + 10, source_time + 10))
before = _tree_state(self.comfy_dir)
with patch.object(images_module, "MAX_THUMBNAIL_FILES", 1):
missing = await self.client.get(
PLAN_URL, params={"mode": "missing", "size": "512", "quality": "high"}
)
rebuild = await self.client.get(
PLAN_URL, params={"mode": "rebuild", "size": "256", "quality": "low"}
)
self.assertEqual(missing.status, 200)
self.assertEqual(
await missing.json(),
{
"success": True,
"targets": 1,
"fresh": 1,
"remaining": 1,
"roots": ["output"],
"mode": "missing",
"size": 512,
"quality": "high",
},
)
data = await rebuild.json()
# Rebuild regenerates fresh previews too: all three are work, one fits the cap.
self.assertEqual((data["targets"], data["fresh"], data["remaining"]), (1, 1, 2))
self.assertEqual(
(data["mode"], data["size"], data["quality"]), ("rebuild", 256, "low")
)
self.assertEqual(_tree_state(self.comfy_dir), before)
self.assertEqual(self.api._jobs.list(), [])
async def test_plan_defaults_to_missing_previews_at_the_concept_size(self):
make_png(self.output_dir / "a.png")
data = await (await self.client.get(PLAN_URL)).json()
self.assertEqual(
(data["mode"], data["size"], data["quality"], data["targets"]),
("missing", 512, "medium", 1),
)
async def test_size_bounds_validated(self):
make_png(self.output_dir / "a.png")
for params in (
{"size": "127"},
{"size": "2049"},
{"size": "512.5"},
{"size": "big"},
{"mode": "all"},
{"quality": "ultra"},
):
with self.subTest(params=params):
resp = await self.client.get(PLAN_URL, params=params)
body = await resp.json()
self.assertEqual(resp.status, 400)
self.assertEqual(
(body["success"], body["code"]), (False, "invalid-request")
)
for body in (
{"size": 127},
{"size": 2049},
{"size": "512"},
{"size": 512.0},
{"size": True},
{"mode": "rebuild-all"},
{"quality": None},
[],
):
with self.subTest(body=body):
resp = await self.client.post(JOB_URL, json=body)
self.assertEqual(resp.status, 400)
self.assertEqual((await resp.json())["code"], "invalid-request")
for edge in (128, 2048):
with self.subTest(edge=edge):
resp = await self.client.get(PLAN_URL, params={"size": str(edge)})
self.assertEqual(resp.status, 200)
self.assertEqual(self.api._jobs.list(), [])
self.assertFalse(self._thumb_path("a").exists())
class TestThumbnailJob(ThumbnailJobCase):
async def test_job_generates_missing_previews_at_the_chosen_edge(self):
make_png(self.output_dir / "a.png", size=(800, 400))
make_png(self.output_dir / "sub" / "b.png", size=(64, 64))
(self.output_dir / "bad.png").write_bytes(b"\x89PNG not really")
status, body = await self._start(mode="missing", size=200, quality="medium")
self.assertEqual(status, 202)
summary = body["job"]
self.assertEqual(
(summary["kind"], summary["title"], summary["admission"]),
("thumbnails", "Thumbnail generation", "guarded"),
)
self.assertTrue(summary["cancellable"])
self.assertEqual(set(summary["counters"]), {"generated", "skipped", "errors"})
self.assertEqual(
summary["scope"], {"mode": "missing", "size": 200, "quality": "medium"}
)
job = await self._finished(summary["id"])
self.assertEqual(job.state, "finished")
self.assertEqual(job.counters, {"generated": 2, "skipped": 0, "errors": 1})
self.assertEqual((job.processed, job.total, job.progress), (3, 3, 100))
self.assertEqual(job.scope["output_folders"], 1)
with Image.open(self._thumb_path("a")) as thumb:
self.assertEqual(thumb.size, (200, 100))
rows = {row["path"]: row for row in job.outcomes["generated"]}
self.assertEqual(set(rows), {"a.png", "sub/b.png"})
self.assertEqual(
(rows["a.png"]["root"], rows["a.png"]["root_index"]), ("output", 0)
)
self.assertEqual(job.outcomes["errors"][0]["path"], "bad.png")
self.assertTrue(any("Thumbnails finished" in line for line in job.log))
# Rows and log lines never carry the server's absolute layout.
self.assertNotIn(str(self.comfy_dir), repr(job.detail()))
async def test_fresh_previews_are_counted_as_skipped(self):
make_png(self.output_dir / "a.png")
make_png(self.output_dir / "b.png")
fresh = make_png(self._thumb_path("a"))
source_time = (self.output_dir / "a.png").stat().st_mtime
os.utime(fresh, (source_time + 10, source_time + 10))
_, body = await self._start()
job = await self._finished(body["job"]["id"])
self.assertEqual(job.counters, {"generated": 1, "skipped": 1, "errors": 0})
self.assertEqual([r["path"] for r in job.outcomes["skipped"]], ["a.png"])
async def test_rebuild_never_touches_originals(self):
for name in ("a", "b"):
make_png(self.output_dir / f"{name}.png", size=(400, 400))
_, body = await self._start(size=128)
await self._finished(body["job"]["id"])
originals = {
name: hashlib.sha256(
(self.output_dir / f"{name}.png").read_bytes()
).hexdigest()
for name in ("a", "b")
}
_, body = await self._start(mode="rebuild", size=256, quality="high")
job = await self._finished(body["job"]["id"])
self.assertEqual(job.counters, {"generated": 2, "skipped": 0, "errors": 0})
for name in ("a", "b"):
digest = hashlib.sha256(
(self.output_dir / f"{name}.png").read_bytes()
).hexdigest()
self.assertEqual(digest, originals[name], name)
with Image.open(self._thumb_path(name)) as thumb:
self.assertEqual(thumb.size, (256, 256))
async def test_rebuild_keeps_old_preview_when_generation_fails(self):
source = make_png(self.output_dir / "a.png", size=(64, 64))
_, body = await self._start()
await self._finished(body["job"]["id"])
preview = self._thumb_path("a").read_bytes()
source.write_bytes(b"\x89PNG broken now")
later = self._thumb_path("a").stat().st_mtime + 10
os.utime(self._thumb_path("a"), (later, later)) # still fresh
_, body = await self._start(mode="rebuild")
job = await self._finished(body["job"]["id"])
self.assertEqual(job.counters["errors"], 1)
self.assertEqual(self._thumb_path("a").read_bytes(), preview)
leftovers = [p.name for p in self._thumb_path("a").parent.iterdir()]
self.assertEqual(leftovers, ["a_thumb.png"]) # no temp file left
async def test_rebuild_keeps_an_old_video_preview_instead_of_a_placeholder(self):
clip = self.output_dir / "clip.mp4"
clip.write_bytes(b"\x00")
preview = make_png(self.output_dir / "thumbnails" / "clip_thumb.jpg")
old = preview.read_bytes()
with (
patch.dict(sys.modules, {"cv2": None}),
patch("subprocess.Popen", side_effect=FileNotFoundError("no ffmpeg")),
):
_, body = await self._start(mode="rebuild")
job = await self._finished(body["job"]["id"])
self.assertEqual(job.counters["errors"], 1)
self.assertEqual(preview.read_bytes(), old)
async def test_quality_sets_the_encoder_not_the_edge(self):
noise = bytes(
(i * 7919 + (i >> 3) * 104729) % 251 for i in range(600 * 600 * 3)
)
with Image.frombytes("RGB", (600, 600), noise) as img:
img.save(self.output_dir / "photo.jpg", "JPEG", quality=95)
sizes = {}
for quality in ("low", "high"):
_, body = await self._start(mode="rebuild", size=300, quality=quality)
await self._finished(body["job"]["id"])
thumb = self._thumb_path("photo", ".jpg")
with Image.open(thumb) as image:
self.assertEqual(image.size, (300, 300))
sizes[quality] = thumb.stat().st_size
self.assertLess(sizes["low"], sizes["high"])
async def test_no_output_folder_fails_the_job(self):
self.api._get_all_output_dirs = lambda: []
_, body = await self._start()
job = await self._finished(body["job"]["id"])
self.assertEqual(job.state, "failed")
self.assertEqual(job.status_line, "ComfyUI output directory not found")
async def test_cancel_stops_at_file_boundary_keeping_written_previews(self):
for i in range(6):
make_png(self.output_dir / f"p{i}.png")
original = PromptManagerConfig.WORKER_THREADS
PromptManagerConfig.WORKER_THREADS = 1
self.addCleanup(setattr, PromptManagerConfig, "WORKER_THREADS", original)
written = []
real_write = images_module._write_image_thumbnail
job_ids = []
def counting(src, dst, *args, **kwargs):
real_write(src, dst, *args, **kwargs)
written.append(dst)
if len(written) == 2:
self.assertTrue(self.api._jobs.cancel(job_ids[0]))
with patch.object(images_module, "_write_image_thumbnail", counting):
_, body = await self._start()
job_ids.append(body["job"]["id"])
job = await self._finished(body["job"]["id"])
self.assertEqual(job.state, "cancelled")
self.assertEqual(job.counters["generated"], 2)
self.assertEqual(len(written), 2)
for dst in written:
self.assertTrue(dst.is_file())
made = sorted((self.output_dir / "thumbnails").glob("*_thumb.png"))
self.assertEqual(made, sorted(written))
self.assertTrue(any("Thumbnails cancelled" in line for line in job.log))
async def test_a_second_thumbnail_job_is_refused_naming_the_first(self):
make_png(self.output_dir / "a.png")
entered, release = self._gate_generation()
_, first = await self._start()
await self._wait(entered)
status, body = await self._start(mode="rebuild")
self.assertEqual((status, body["code"]), (409, "busy"))
self.assertEqual(body["running"]["id"], first["job"]["id"])
release.set()
await self._finished(first["job"]["id"])
async def test_thumbnail_job_refused_while_scan_runs(self):
make_png(self.output_dir / "a.png")
self._run_scan()
status, body = await self._start()
self.assertEqual((status, body["code"]), (409, "busy"))
self.assertEqual(body["running"]["title"], "Scan for metadata")
self.assertFalse(self._thumb_path("a").exists())
async def test_scan_refused_while_thumbnail_job_runs(self):
make_png(self.output_dir / "a.png")
entered, release = self._gate_generation()
_, started = await self._start()
await self._wait(entered)
resp = await self.client.post("/prompt_manager/jobs/scan")
body = await resp.json()
self.assertEqual((resp.status, body["code"]), (409, "busy"))
self.assertEqual(body["running"]["title"], "Thumbnail generation")
release.set()
await self._finished(started["job"]["id"])
async def test_clear_refused_while_thumbnail_job_runs(self):
make_png(self.output_dir / "a.png")
kept = make_png(self.output_dir / "thumbnails" / "old_thumb.png")
entered, release = self._gate_generation()
_, started = await self._start()
await self._wait(entered)
resp = await self.client.post("/prompt_manager/images/clear-thumbnails")
self.assertEqual(resp.status, 409)
self.assertEqual(
await resp.json(),
{"success": False, "error": "Thumbnail generation already running"},
)
self.assertTrue(kept.exists())
release.set()
await self._finished(started["job"]["id"])
async def test_every_exit_sets_a_truthful_final_status_line(self):
"""I3: finished, nothing to do, cancelled and failed each say what happened."""
lines = self._status_lines()
make_png(self.output_dir / "a.png")
(self.output_dir / "bad.png").write_bytes(b"\x89PNG nope")
_, body = await self._start()
job = await self._finished(body["job"]["id"])
self.assertEqual(job.status_line, "1 preview written · 1 error")
# Every preview fresh: the job finishes with nothing to do.
source_time = (self.output_dir / "a.png").stat().st_mtime
bad_thumb = make_png(self._thumb_path("bad"))
for thumb in (self._thumb_path("a"), bad_thumb):
os.utime(thumb, (source_time + 10, source_time + 10))
os.utime(self.output_dir / "bad.png", (source_time, source_time))
_, body = await self._start()
job = await self._finished(body["job"]["id"])
self.assertEqual((job.state, job.total), ("finished", 0))
self.assertEqual(
job.status_line, "No previews to generate · 2 already up to date"
)
self.assertNotIn("Processing file 0 of 0", lines)
async def test_an_empty_library_says_there_is_nothing_to_preview(self):
lines = self._status_lines()
_, body = await self._start()
job = await self._finished(body["job"]["id"])
self.assertEqual(
(job.state, job.status_line), ("finished", "No images or videos to preview")
)
self.assertNotIn("Processing file 0 of 0", lines)
async def test_a_cancelled_job_says_what_it_kept(self):
for i in range(6):
make_png(self.output_dir / f"p{i}.png")
self._one_worker()
real_write = images_module._write_image_thumbnail
job_ids = []
written = []
def counting(src, dst, *args, **kwargs):
real_write(src, dst, *args, **kwargs)
written.append(dst)
if len(written) == 1:
self.api._jobs.cancel(job_ids[0])
with patch.object(images_module, "_write_image_thumbnail", counting):
_, body = await self._start()
job_ids.append(body["job"]["id"])
job = await self._finished(body["job"]["id"])
self.assertEqual(job.state, "cancelled")
self.assertEqual(job.status_line, "Cancelled · 1 preview written")
async def test_an_internal_error_says_the_job_failed(self):
def broken(*_args, **_kwargs):
raise RuntimeError("boom")
self.api._plan_gallery_thumbnails = broken
_, body = await self._start()
job = await self._finished(body["job"]["id"])
self.assertEqual(
(job.state, job.status_line),
("failed", "Thumbnail generation stopped on an internal error."),
)
async def test_cancel_during_planning_stops_the_walk_and_starts_nothing(self):
"""M2: the walk checks Cancel per file; no ``start`` frame is published."""
for i in range(10):
make_png(self.output_dir / f"p{i}.png")
entered, release = threading.Event(), threading.Event()
self.addCleanup(release.set)
checked = []
real_fresh = images_module._thumbnail_is_fresh
def gated_fresh(src, dst):
checked.append(src.name)
if len(checked) == 1:
entered.set()
release.wait(10)
return real_fresh(src, dst)
with patch.object(images_module, "_thumbnail_is_fresh", gated_fresh):
stream = asyncio.ensure_future(self.client.post(self.PROGRESS_URL))
await self._wait(entered)
job = self.api._jobs.active("thumbnails")
self.assertTrue(self.api._jobs.cancel(job.id))
release.set()
events = parse_sse(await (await stream).text())
await asyncio.wait_for(job.task, 10)
self.assertEqual(checked, ["p0.png"]) # the walk stopped at the next file
self.assertEqual([name for name, _ in events], ["job", "status", "error"])
self.assertEqual(job.state, "cancelled")
self.assertEqual(job.status_line, "Cancelled before any preview was written")
self.assertEqual(job.total, 0)
self.assertFalse((self.output_dir / "thumbnails").exists())
async def test_a_locked_preview_is_a_readable_coded_error(self):
"""M6: Windows refuses to replace a preview another process has open."""
make_png(self.output_dir / "a.png")
locked = PermissionError(13, "Access is denied")
locked.winerror = 5
def refuse(*_args, **_kwargs):
raise locked
with patch.object(images_module, "_write_image_thumbnail", refuse):
_, body = await self._start(mode="rebuild")
job = await self._finished(body["job"]["id"])
self.assertEqual(job.counters["errors"], 1)
[row] = job.outcomes["errors"]
self.assertEqual(row["detail"], images_module.PREVIEW_IN_USE)
self.assertNotIn("WinError", repr(job.detail()))
self.assertTrue(any(images_module.PREVIEW_IN_USE in line for line in job.log))
async def test_a_locked_video_preview_is_the_same_coded_error(self):
clip = self.output_dir / "clip.mp4"
clip.write_bytes(b"\x00")
locked = PermissionError(13, "Access is denied")
locked.winerror = 32
def refuse(*_args, **_kwargs):
raise locked
with (
patch.dict(sys.modules, {"cv2": None}),
patch("subprocess.Popen", side_effect=FileNotFoundError("no ffmpeg")),
patch.object(images_module, "_atomic_save", refuse),
):
_, body = await self._start()
job = await self._finished(body["job"]["id"])
[row] = job.outcomes["errors"]
self.assertEqual(row["detail"], images_module.PREVIEW_IN_USE)
async def test_a_permission_error_off_windows_names_the_permission(self):
make_png(self.output_dir / "a.png")
def refuse(*_args, **_kwargs):
raise PermissionError(13, "Permission denied")
with patch.object(images_module, "_write_image_thumbnail", refuse):
_, body = await self._start()
job = await self._finished(body["job"]["id"])
[row] = job.outcomes["errors"]
self.assertEqual(row["detail"], images_module.PREVIEW_NOT_WRITABLE)
async def test_ffmpeg_fallback_keeps_quality_and_aspect_ratio(self):
"""M1: without OpenCV, ffmpeg keeps the chosen quality and the aspect ratio."""
(self.output_dir / "clip.mp4").write_bytes(b"\x00")
commands = []
def fake_ffmpeg(cmd, **_kwargs):
commands.append(cmd)
Path(cmd[-1]).write_bytes(b"jpeg")
done = type("Done", (), {"returncode": 0})()
done.communicate = lambda timeout=None: ("", "")
return done
for quality, qscale in (("high", "2"), ("medium", "4"), ("low", "8")):
with (
patch.dict(sys.modules, {"cv2": None}),
patch("subprocess.Popen", side_effect=fake_ffmpeg),
):
_, body = await self._start(mode="rebuild", size=640, quality=quality)
job = await self._finished(body["job"]["id"])
self.assertEqual(job.counters["generated"], 1, quality)
cmd = commands[-1]
self.assertNotIn("-s", cmd)
self.assertEqual(
cmd[cmd.index("-vf") + 1],
"scale=640:640:force_original_aspect_ratio=decrease",
)
self.assertEqual(cmd[cmd.index("-q:v") + 1], qscale, quality)
async def test_the_placeholder_uses_the_chosen_quality(self):
(self.output_dir / "clip.mp4").write_bytes(b"\x00")
saved = []
real_save = images_module._atomic_save
def recording(img, dst, fmt=None, **kwargs):
# The encoder settings (guard is the automatic previews' hold check).
saved.append({k: v for k, v in kwargs.items() if k != "guard"})
return real_save(img, dst, fmt, **kwargs)
with (
patch.dict(sys.modules, {"cv2": None}),
patch("subprocess.Popen", side_effect=FileNotFoundError("no ffmpeg")),
patch.object(images_module, "_atomic_save", recording),
):
_, body = await self._start(quality="low")
await self._finished(body["job"]["id"])
self.assertEqual(saved, [images_module.THUMBNAIL_ENCODINGS["low"]])
# The legacy stream's frames and their keys, as the gallery page reads them.
LEGACY_KEYS = {
"job": {"id", "started"},
"status": {"phase", "message"},
"start": {
"total_images",
"skipped",
"remaining",
"phase",
"image_count",
"video_count",
"message",
},
"progress": {
"processed",
"total_images",
"generated",
"skipped",
"error_count",
"percentage",
"rate",
"eta",
"elapsed",
"current_file",
"file_type",
"action",
},
"complete": {
"count",
"skipped",
"total_images",
"remaining",
"errors",
"error_count",
"elapsed_time",
"processing_rate",
"message",
},
}
class TestLegacyStreamOnTheJob(ThumbnailJobCase):
async def test_legacy_progress_events_unchanged_on_success(self):
make_png(self.output_dir / "a.png", size=(400, 400))
make_png(self.output_dir / "b.png")
resp = await self.client.post(f"{self.PROGRESS_URL}?quality=low")
events = parse_sse(await resp.text())
self.assertEqual(
[name for name, _ in events],
["job", "status", "start", "progress", "progress", "complete"],
)
for name, data in events:
self.assertEqual(set(data), LEGACY_KEYS[name], name)
complete = events[-1][1]
self.assertEqual((complete["count"], complete["total_images"]), (2, 2))
self.assertEqual(
events[1][1],
{"phase": "scanning", "message": "Scanning for images and videos..."},
)
with Image.open(self._thumb_path("a")) as thumb:
self.assertEqual(max(thumb.size), 150) # the legacy preset still sizes
[job] = self.api._jobs.list()
self.assertEqual(
(job.kind, job.title, job.state, job.cancellable),
("thumbnails", "Thumbnail generation", "finished", True),
)
self.assertEqual(job.counters["generated"], 2)
# I1: the first frame names the job this stream started, for its Cancel.
self.assertEqual(events[0][1], {"id": job.id, "started": True})
async def test_legacy_file_errors_still_stream(self):
make_png(self.output_dir / "good.png")
(self.output_dir / "bad.png").write_bytes(b"\x89PNG nope")
resp = await self.client.post(self.PROGRESS_URL)
events = parse_sse(await resp.text())
self.assertEqual(
[d for e, d in events if e == "file_error"],
[{"file": "bad.png", "error": "Not a valid image file"}],
)
async def test_thumbnail_job_survives_client_disconnect(self):
"""I2: the stream sees its client go after batch 1; every batch still runs.
One worker thread makes batches of 4, so 9 files take three batches. The
first file waits until the client is gone; the second batch waits until
the stream has seen it go (its subscription dropped) and records whether
the job was still running then. A stream that stopped the work on
disconnect would leave 4 previews; the job writes all 9.
"""
for i in range(9):
make_png(self.output_dir / f"p{i}.png")
self._one_worker()
first, closed = threading.Event(), threading.Event()
state = {"calls": 0, "left": None, "running_when_left": None}
original = self.api._generate_one
def gated(*args, **kwargs):
state["calls"] += 1
if state["calls"] == 1:
first.set()
closed.wait(10)
elif state["calls"] == 5: # the second batch
state["running_when_left"] = state["left"].wait(10)
return original(*args, **kwargs)
self.api._generate_one = gated
self.addCleanup(closed.set)
resp = await self.client.post(self.PROGRESS_URL)
self.assertEqual(resp.status, 200)
await self._wait(first)
job = self.api._jobs.active("thumbnails")
_subscribed, state["left"] = self._watch_subscribers(job)
resp.close() # the gallery tab went away
closed.set()
await self._wait(state["left"]) # the server saw the client go
self.assertEqual(job.subscriber_count, 0)
await asyncio.wait_for(job.task, 10)
self.assertEqual(job.counters["generated"], 9)
self.assertEqual(job.state, "finished")
self.assertTrue(state["running_when_left"])
for i in range(9):
self.assertTrue(self._thumb_path(f"p{i}").is_file())
async def test_legacy_stream_attaches_to_a_running_job(self):
make_png(self.output_dir / "a.png")
entered, release = self._gate_generation()
_, started = await self._start(mode="missing", size=256)
await self._wait(entered)
job = self.api._jobs.get(started["job"]["id"])
subscribed, _left = self._watch_subscribers(job)
attached = asyncio.ensure_future(self.client.post(self.PROGRESS_URL))
await self._wait(subscribed) # M4: an event with a ceiling, never a poll
release.set()
events = parse_sse(await (await attached).text())
self.assertEqual(events[-1][0], "complete")
# I1: the stream names the job it did not start: the gallery never cancels it.
self.assertEqual(events[0], ("job", {"id": job.id, "started": False}))
# One job: the stream followed the running one with its own options.
[listed] = self.api._jobs.list()
self.assertIs(listed, job)
self.assertEqual(job.scope["size"], 256)
async def test_cancel_from_activity_ends_the_legacy_stream_with_an_error(self):
for i in range(2):
make_png(self.output_dir / f"p{i}.png")
entered, release = self._gate_generation()
stream = asyncio.ensure_future(self.client.post(self.PROGRESS_URL))
await self._wait(entered)
job = self.api._jobs.active("thumbnails")
self.assertTrue(self.api._jobs.cancel(job.id))
release.set()
events = parse_sse(await (await stream).text())
self.assertEqual(events[-1][0], "error")
self.assertEqual(events[-1][1]["error"], "Thumbnail generation was cancelled")
await asyncio.wait_for(job.task, 10)
self.assertEqual(job.state, "cancelled")
async def test_a_job_started_while_the_stream_prepares_is_attached(self):
"""M3: a job that starts during ``prepare`` is followed, not refused."""
from aiohttp import web
make_png(self.output_dir / "a.png")
entered, release = self._gate_generation()
real_prepare = web.StreamResponse.prepare
raced = []
async def prepare(response, request):
if not raced and type(response) is web.StreamResponse:
options, _ = thumbnail_options({"size": 256})
raced.append(self.api._start_thumbnail_job(options))
return await real_prepare(response, request)
with patch.object(web.StreamResponse, "prepare", prepare):
stream = asyncio.ensure_future(self.client.post(self.PROGRESS_URL))
await self._wait(entered)
release.set()
events = parse_sse(await (await stream).text())
[job] = raced
self.assertEqual(events[0], ("job", {"id": job.id, "started": False}))
self.assertEqual(events[-1][0], "complete")
self.assertEqual(self.api._jobs.list(), [job])
async def test_a_refused_stream_names_no_job(self):
make_png(self.output_dir / "a.png")
self._run_scan()
events = parse_sse(await (await self.client.post(self.PROGRESS_URL)).text())
self.assertEqual(
events,
[
(
"error",
{
"error": "Scan for metadata already running",
"message": "Scan for metadata already running",
},
)
],
)
if __name__ == "__main__":
unittest.main()