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https://github.com/sissbruecker/linkding
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Load bookmark thumbnails after import (#724)
* Update thumbnails after import * Safer way to download thumbnails * small test improvements * add missing tests --------- Co-authored-by: Sascha Ißbrücker <sascha.issbruecker@gmail.com>
This commit is contained in:
Viacheslav Slinko
GitHub
parent
87cd4061cb
commit
b4376a9ff1
9 changed files with 263 additions and 20 deletions
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@ -1,4 +1,4 @@
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# Generated by Django 5.0.3 on 2024-05-07 07:27
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# Generated by Django 5.0.3 on 2024-05-10 07:01
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from django.db import migrations, models
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@ -13,7 +13,7 @@ class Migration(migrations.Migration):
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migrations.AddField(
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model_name="bookmark",
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name="preview_image_file",
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field=models.CharField(blank=True, max_length=512, null=True),
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field=models.CharField(blank=True, max_length=512),
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),
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migrations.AddField(
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model_name="userprofile",
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@ -59,7 +59,7 @@ class Bookmark(models.Model):
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website_description = models.TextField(blank=True, null=True)
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web_archive_snapshot_url = models.CharField(max_length=2048, blank=True)
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favicon_file = models.CharField(max_length=512, blank=True)
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preview_image_file = models.CharField(max_length=512, blank=True, null=True)
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preview_image_file = models.CharField(max_length=512, blank=True)
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unread = models.BooleanField(default=False)
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is_archived = models.BooleanField(default=False)
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shared = models.BooleanField(default=False)
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@ -83,6 +83,8 @@ def import_netscape_html(
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tasks.schedule_bookmarks_without_snapshots(user)
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# Load favicons for newly imported bookmarks
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tasks.schedule_bookmarks_without_favicons(user)
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# Load previews for newly imported bookmarks
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tasks.schedule_bookmarks_without_previews(user)
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end = timezone.now()
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logger.debug(f"Import duration: {end - import_start}")
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@ -31,16 +31,58 @@ def load_preview_image(url: str) -> str | None:
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logger.debug(f"Could not find preview image in metadata: {url}")
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return None
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logger.debug(f"Loading preview image: {metadata.preview_image}")
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with requests.get(metadata.preview_image, stream=True) as response:
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content_type = response.headers["Content-Type"]
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preview_image_hash = _url_to_filename(url)
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image_url = metadata.preview_image
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logger.debug(f"Loading preview image: {image_url}")
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with requests.get(image_url, stream=True) as response:
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if response.status_code < 200 or response.status_code >= 300:
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logger.debug(
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f"Bad response status code for preview image: {image_url} status_code={response.status_code}"
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)
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return None
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if "Content-Length" not in response.headers:
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logger.debug(f"Empty Content-Length for preview image: {image_url}")
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return None
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content_length = int(response.headers["Content-Length"])
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if content_length > settings.LD_PREVIEW_MAX_SIZE:
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logger.debug(
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f"Content-Length exceeds LD_PREVIEW_MAX_SIZE: {image_url} length={content_length}"
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)
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return None
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if "Content-Type" not in response.headers:
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logger.debug(f"Empty Content-Type for preview image: {image_url}")
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return None
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content_type = response.headers["Content-Type"].split(";", 1)[0]
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file_extension = mimetypes.guess_extension(content_type)
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if file_extension not in settings.LD_PREVIEW_ALLOWED_EXTENSIONS:
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logger.debug(
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f"Unsupported Content-Type for preview image: {image_url} content_type={content_type}"
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)
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return None
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preview_image_hash = _url_to_filename(url)
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preview_image_file = f"{preview_image_hash}{file_extension}"
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preview_image_path = _get_image_path(preview_image_file)
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with open(preview_image_path, "wb") as file:
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downloaded = 0
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for chunk in response.iter_content(chunk_size=8192):
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downloaded += len(chunk)
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if downloaded > content_length:
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logger.debug(
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f"Content-Length mismatch for preview image: {image_url} length={content_length} downloaded={downloaded}"
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)
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file.close()
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preview_image_path.unlink()
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return None
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file.write(chunk)
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logger.debug(f"Saved preview image as: {preview_image_path}")
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return preview_image_file
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@ -7,6 +7,7 @@ import waybackpy
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from django.conf import settings
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from django.contrib.auth import get_user_model
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from django.contrib.auth.models import User
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from django.db.models import Q
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from django.utils import timezone, formats
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from huey import crontab
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from huey.contrib.djhuey import HUEY as huey
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@ -166,6 +167,12 @@ def is_favicon_feature_active(user: User) -> bool:
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return background_tasks_enabled and user.profile.enable_favicons
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def is_preview_feature_active(user: User) -> bool:
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return (
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user.profile.enable_preview_images and not settings.LD_DISABLE_BACKGROUND_TASKS
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)
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def load_favicon(user: User, bookmark: Bookmark):
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if is_favicon_feature_active(user):
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_load_favicon_task(bookmark.id)
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@ -222,7 +229,7 @@ def _schedule_refresh_favicons_task(user_id: int):
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def load_preview_image(user: User, bookmark: Bookmark):
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if user.profile.enable_preview_images and not settings.LD_DISABLE_BACKGROUND_TASKS:
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if is_preview_feature_active(user):
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_load_preview_image_task(bookmark.id)
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@ -245,6 +252,27 @@ def _load_preview_image_task(bookmark_id: int):
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)
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def schedule_bookmarks_without_previews(user: User):
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if is_preview_feature_active(user):
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_schedule_bookmarks_without_previews_task(user.id)
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@task()
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def _schedule_bookmarks_without_previews_task(user_id: int):
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user = get_user_model().objects.get(id=user_id)
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bookmarks = Bookmark.objects.filter(
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Q(preview_image_file__exact=""),
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owner=user,
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)
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# TODO: Implement bulk task creation
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for bookmark in bookmarks:
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try:
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_load_preview_image_task(bookmark.id)
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except Exception as exc:
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logging.exception(exc)
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def is_html_snapshot_feature_active() -> bool:
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return settings.LD_ENABLE_SNAPSHOTS and not settings.LD_DISABLE_BACKGROUND_TASKS
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@ -578,6 +578,60 @@ class BookmarkTasksTestCase(TestCase, BookmarkFactoryMixin):
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self.assertEqual(self.executed_count(), 0)
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def test_schedule_bookmarks_without_previews_should_load_preview_for_all_bookmarks_without_preview(
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self,
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):
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user = self.get_or_create_test_user()
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self.setup_bookmark()
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self.setup_bookmark()
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self.setup_bookmark()
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self.setup_bookmark(preview_image_file="test.png")
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self.setup_bookmark(preview_image_file="test.png")
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self.setup_bookmark(preview_image_file="test.png")
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tasks.schedule_bookmarks_without_previews(user)
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self.assertEqual(self.executed_count(), 4)
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self.assertEqual(self.mock_load_preview_image.call_count, 3)
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def test_schedule_bookmarks_without_previews_should_only_update_user_owned_bookmarks(
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self,
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):
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user = self.get_or_create_test_user()
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other_user = User.objects.create_user(
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"otheruser", "otheruser@example.com", "password123"
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)
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self.setup_bookmark()
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self.setup_bookmark()
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self.setup_bookmark()
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self.setup_bookmark(user=other_user)
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self.setup_bookmark(user=other_user)
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self.setup_bookmark(user=other_user)
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tasks.schedule_bookmarks_without_previews(user)
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self.assertEqual(self.mock_load_preview_image.call_count, 3)
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@override_settings(LD_DISABLE_BACKGROUND_TASKS=True)
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def test_schedule_bookmarks_without_previews_should_not_run_when_background_tasks_are_disabled(
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self,
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):
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self.setup_bookmark()
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tasks.schedule_bookmarks_without_previews(self.get_or_create_test_user())
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self.assertEqual(self.executed_count(), 0)
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def test_schedule_bookmarks_without_previews_should_not_run_when_preview_feature_is_disabled(
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self,
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):
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self.user.profile.enable_preview_images = False
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self.user.profile.save()
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self.setup_bookmark()
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tasks.schedule_bookmarks_without_previews(self.get_or_create_test_user())
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self.assertEqual(self.executed_count(), 0)
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@override_settings(LD_ENABLE_SNAPSHOTS=True)
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def test_create_html_snapshot_should_create_pending_asset(self):
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bookmark = self.setup_bookmark()
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@ -465,3 +465,14 @@ class ImporterTestCase(TestCase, BookmarkFactoryMixin, ImportTestMixin):
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import_netscape_html(test_html, user)
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mock_schedule_bookmarks_without_favicons.assert_called_once_with(user)
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def test_schedule_preview_loading(self):
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user = self.get_or_create_test_user()
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test_html = self.render_html(tags_html="")
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with patch.object(
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tasks, "schedule_bookmarks_without_previews"
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) as mock_schedule_bookmarks_without_previews:
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import_netscape_html(test_html, user)
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mock_schedule_bookmarks_without_previews.assert_called_once_with(user)
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@ -13,9 +13,20 @@ mock_image_data = b"mock_image"
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class MockStreamingResponse:
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def __init__(self, data=mock_image_data, content_type="image/png"):
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def __init__(
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self,
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url,
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data=mock_image_data,
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content_type="image/png",
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content_length=None,
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status_code=200,
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):
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self.url = url
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self.chunks = [data]
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self.headers = {"Content-Type": content_type}
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self.status_code = status_code
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if not content_length:
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content_length = len(data)
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self.headers = {"Content-Type": content_type, "Content-Length": content_length}
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def iter_content(self, **kwargs):
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return self.chunks
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@ -47,19 +58,29 @@ class PreviewImageLoaderTestCase(TestCase):
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self.settings_override.disable()
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self.mock_load_website_metadata_patcher.stop()
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def create_mock_response(self, icon_data=mock_image_data, content_type="image/png"):
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def create_mock_response(
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self,
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url="https://example.com/image.png",
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icon_data=mock_image_data,
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content_type="image/png",
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content_length=len(mock_image_data),
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status_code=200,
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):
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mock_response = mock.Mock()
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mock_response.raw = io.BytesIO(icon_data)
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return MockStreamingResponse(icon_data, content_type)
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return MockStreamingResponse(
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url, icon_data, content_type, content_length, status_code
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)
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def get_image_path(self, filename):
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return Path(os.path.join(settings.LD_PREVIEW_FOLDER, filename))
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def image_exists(self, filename):
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return self.get_image_path(filename).exists()
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def assertImageExists(self, filename, data):
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self.assertTrue(self.get_image_path(filename).exists())
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self.assertEqual(self.get_image_path(filename).read_bytes(), data)
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def get_image_data(self, filename):
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return self.get_image_path(filename).read_bytes()
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def assertNoImageExists(self):
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self.assertFalse(os.listdir(settings.LD_PREVIEW_FOLDER))
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def test_load_preview_image(self):
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with mock.patch("requests.get") as mock_get:
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@ -67,8 +88,8 @@ class PreviewImageLoaderTestCase(TestCase):
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file = preview_image_loader.load_preview_image("https://example.com")
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self.assertTrue(self.image_exists(file))
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self.assertEqual(mock_image_data, self.get_image_data(file))
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self.assertIsNotNone(file)
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self.assertImageExists(file, mock_image_data)
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def test_load_preview_image_returns_none_if_no_preview_image_detected(self):
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with mock.patch("requests.get") as mock_get:
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@ -78,6 +99,80 @@ class PreviewImageLoaderTestCase(TestCase):
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file = preview_image_loader.load_preview_image("https://example.com")
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self.assertIsNone(file)
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self.assertNoImageExists()
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def test_load_preview_image_returns_none_for_invalid_status_code(self):
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invalid_status_codes = [199, 300, 400, 500]
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for status_code in invalid_status_codes:
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with mock.patch("requests.get") as mock_get:
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mock_get.return_value = self.create_mock_response(
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status_code=status_code
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)
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file = preview_image_loader.load_preview_image("https://example.com")
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self.assertIsNone(file)
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self.assertNoImageExists()
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def test_load_preview_image_returns_none_if_content_length_exceeds_limit(self):
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# exceeds max size
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with mock.patch("requests.get") as mock_get:
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mock_get.return_value = self.create_mock_response(
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content_length=settings.LD_PREVIEW_MAX_SIZE + 1
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)
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file = preview_image_loader.load_preview_image("https://example.com")
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self.assertIsNone(file)
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self.assertNoImageExists()
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# equals max size
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with mock.patch("requests.get") as mock_get:
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mock_get.return_value = self.create_mock_response(
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content_length=settings.LD_PREVIEW_MAX_SIZE
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)
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file = preview_image_loader.load_preview_image("https://example.com")
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self.assertIsNotNone(file)
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self.assertImageExists(file, mock_image_data)
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def test_load_preview_image_returns_none_for_invalid_content_type(self):
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invalid_content_types = ["text/html", "application/json"]
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for content_type in invalid_content_types:
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with mock.patch("requests.get") as mock_get:
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mock_get.return_value = self.create_mock_response(
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content_type=content_type
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)
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file = preview_image_loader.load_preview_image("https://example.com")
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self.assertIsNone(file)
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self.assertNoImageExists()
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valid_content_types = ["image/png", "image/jpeg", "image/gif"]
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for content_type in valid_content_types:
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with mock.patch("requests.get") as mock_get:
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mock_get.return_value = self.create_mock_response(
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content_type=content_type
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)
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file = preview_image_loader.load_preview_image("https://example.com")
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self.assertIsNotNone(file)
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self.assertImageExists(file, mock_image_data)
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def test_load_preview_image_returns_none_if_download_exceeds_content_length(self):
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with mock.patch("requests.get") as mock_get:
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mock_get.return_value = self.create_mock_response(content_length=1)
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file = preview_image_loader.load_preview_image("https://example.com")
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self.assertIsNone(file)
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self.assertNoImageExists()
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def test_load_preview_image_creates_folder_if_not_exists(self):
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with mock.patch("requests.get") as mock_get:
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@ -95,14 +190,16 @@ class PreviewImageLoaderTestCase(TestCase):
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def test_guess_file_extension(self):
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with mock.patch("requests.get") as mock_get:
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mock_get.return_value = self.create_mock_response(content_type="image/png")
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file = preview_image_loader.load_preview_image("https://example.com")
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self.assertTrue(self.image_exists(file))
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self.assertImageExists(file, mock_image_data)
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self.assertEqual("png", file.split(".")[-1])
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with mock.patch("requests.get") as mock_get:
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mock_get.return_value = self.create_mock_response(content_type="image/jpeg")
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file = preview_image_loader.load_preview_image("https://example.com")
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self.assertTrue(self.image_exists(file))
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self.assertImageExists(file, mock_image_data)
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self.assertEqual("jpg", file.split(".")[-1])
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@ -289,6 +289,15 @@ LD_ENABLE_REFRESH_FAVICONS = os.getenv("LD_ENABLE_REFRESH_FAVICONS", True) in (
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# Previews settings
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LD_PREVIEW_FOLDER = os.path.join(BASE_DIR, "data", "previews")
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LD_PREVIEW_MAX_SIZE = int(os.getenv("LD_PREVIEW_MAX_SIZE", 5242880))
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LD_PREVIEW_ALLOWED_EXTENSIONS = [
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".jpg",
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".jpeg",
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".png",
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".gif",
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".svg",
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".webp",
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]
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# Asset / snapshot settings
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LD_ASSET_FOLDER = os.path.join(BASE_DIR, "data", "assets")
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