def delete_asset(asset_id):
asset = Asset.find_by_id(asset_id) if asset_id else None
if not asset:
raise ResourceNotFoundError('Asset not found.')
if not can_update_asset(asset=asset, user=current_user):
raise BadRequestError(
'To delete this asset you must own it or be a teacher in the course.'
)
Asset.delete(asset_id=asset_id)
return tolerant_jsonify({'message': f'Asset {asset_id} deleted'}), 200
def previews_callback():
if not verify_preview_service_authorization(
request.headers.get('authorization')):
raise UnauthorizedRequestError(
'Missing or invalid authorization header.')
params = request.form
if not (params.get('id', None) and params.get('status', None)):
raise BadRequestError('Id and status fields required.')
metadata = None
try:
if params.get('metadata'):
metadata = json.loads(params['metadata'])
except Exception as e:
app.logger.error('Failed to parse JSON preview metadata.')
app.logger.exception(e)
raise BadRequestError('Could not parse JSON metadata.')
asset = Asset.find_by_id(params['id'])
if not asset:
raise BadRequestError(f"Asset {params['id']} not found.")
if asset.update_preview(
preview_status=params.get('status'),
thumbnail_url=params.get('thumbnail'),
image_url=params.get('image'),
pdf_url=params.get('pdf'),
metadata=metadata,
):
return tolerant_jsonify({'status': 'success'})
else:
raise InternalServerError(
f"Unable to update preview data (asset_id={params['id']}.")
def create_link_submission_asset(self, course, user, category, assignment, submission, link_submission_tracker):
try:
existing_submission_asset = link_submission_tracker.get(submission.url, None)
if existing_submission_asset:
app.logger.debug(f'Adding new user to existing link asset: user {user.canvas_user_id}, asset {existing_submission_asset.id}.')
existing_submission_asset.users.append(user)
db.session.add(existing_submission_asset)
std_commit()
else:
app.logger.info(
f'Will create link asset for submission: '
f'user {user.canvas_user_id}, submission {submission.id}, assignment {assignment.id}, {_format_course(course)}')
link_submission_tracker[submission.url] = Asset.create(
asset_type='link',
canvas_assignment_id=assignment.id,
categories=[category],
course_id=course.id,
source=submission.url,
title=submission.url,
url=submission.url,
users=[user],
create_activity=False,
)
except Exception as e:
app.logger.error(
f'Failed to create link asset for an assignment submission: '
f'user {user.canvas_user_id}, submission {submission.id}, assignment {assignment.id}, {_format_course(course)}')
app.logger.exception(e)
def _create_assets(courses, users):
course_id = courses[0].id
def _create_category(visible):
return Category.create(
canvas_assignment_id=98765,
canvas_assignment_name=
f'Linger on your pale blue eyes (visible={visible})',
course_id=course_id,
title=f'Thought of you as my mountain top (visible={visible})',
visible=visible,
)
category_visible = _create_category(True)
category_hidden = _create_category(False)
std_commit(allow_test_environment=True)
assets = []
for a in _test_assets:
asset = Asset.create(
asset_type=a['asset_type'],
categories=[category_hidden, category_visible],
course_id=course_id,
description=None,
title=a['title'],
url=a['url'],
users=[users[0]],
)
db.session.add(asset)
assets.append(asset)
std_commit(allow_test_environment=True)
return assets
def _get_asset_for_like(asset_id):
asset = Asset.find_by_id(asset_id=asset_id)
if not asset or not can_view_asset(asset=asset, user=current_user):
raise ResourceNotFoundError(f'No asset found with id: {asset_id}')
elif current_user.user in asset.users:
raise BadRequestError('You cannot like your own asset.')
else:
return asset
def get_comments(asset_id):
asset = Asset.find_by_id(asset_id=asset_id)
if asset and can_view_asset(asset=asset, user=current_user):
return tolerant_jsonify(
_decorate_comments(Comment.get_comments(asset.id)))
else:
raise ResourceNotFoundError(
'Asset is either unavailable or non-existent.')
def mock_asset(app, db_session):
course = Course.create(
canvas_api_domain='bcourses.berkeley.edu',
canvas_course_id=randrange(1000000),
)
category_hidden = Category.create(
canvas_assignment_name='Just look into her false colored eyes',
course_id=course.id,
title='What a clown (visible=False)',
canvas_assignment_id=98765,
visible=False,
)
category_visible = Category.create(
canvas_assignment_name='Just look into her false colored eyes',
course_id=course.id,
title='What a clown (visible=True)',
canvas_assignment_id=98765,
visible=True,
)
course = Course.query.order_by(Course.name).all()[0]
canvas_user_id = str(randint(1000000, 9999999))
user = User.create(
canvas_course_role='Student',
canvas_course_sections=[],
canvas_email=f'{canvas_user_id}@berkeley.edu',
canvas_enrollment_state='active',
canvas_full_name=f'Student {canvas_user_id}',
canvas_user_id=canvas_user_id,
course_id=course.id,
)
unique_token = datetime.now().isoformat()
asset = Asset.create(
asset_type='link',
categories=[category_hidden, category_visible],
course_id=course.id,
description=None,
download_url=
f"s3://{app.config['AWS_S3_BUCKET_FOR_ASSETS']}/asset/{course.id}_{canvas_user_id}_{unique_token}.pdf",
title=f'Mock Asset created at {unique_token}',
url=f'https://en.wikipedia.org/wiki/{unique_token}',
users=[user],
)
for test_comment in _get_mock_comments():
comment = Comment.create(asset=asset,
body=test_comment['body'],
user_id=user.id)
for reply in test_comment.get('replies', []):
reply = Comment.create(
asset=asset,
body=reply['body'],
parent_id=comment.id,
user_id=user.id,
)
std_commit(allow_test_environment=True)
yield asset
db_session.delete(asset)
std_commit(allow_test_environment=True)
def get_asset(asset_id):
asset = Asset.find_by_id(asset_id=asset_id)
if asset and can_view_asset(asset=asset, user=current_user):
if current_user.user not in asset.users:
asset.increment_views(current_user.user)
return tolerant_jsonify(
asset.to_api_json(user_id=current_user.get_id()))
else:
raise ResourceNotFoundError(f'No asset found with id: {asset_id}')
def update_asset():
params = request.get_json()
asset_id = params.get('assetId')
category_id = params.get('categoryId')
description = params.get('description')
title = params.get('title')
asset = Asset.find_by_id(asset_id) if asset_id else None
if not asset or not title:
raise BadRequestError('Asset update requires a valid ID and title.')
if not can_update_asset(asset=asset, user=current_user):
raise BadRequestError(
'To update an asset you must own it or be a teacher in the course.'
)
asset = Asset.update(
asset_id=asset_id,
categories=category_id and [Category.find_by_id(category_id)],
description=description,
title=title,
)
return tolerant_jsonify(asset.to_api_json(user_id=current_user.get_id()))
def create_asset():
params = request.get_json() or request.form
asset_type = params.get('type')
category_id = params.get('categoryId')
description = params.get('description')
source = params.get('source')
url = params.get('url')
title = params.get('title', url)
visible = params.get('visible', True)
if not asset_type or not title:
raise BadRequestError('Asset creation requires title and type.')
if asset_type == 'link' and not url:
raise BadRequestError('Link asset creation requires url.')
if not current_user.course:
raise BadRequestError('Course data not found')
s3_attrs = {}
if asset_type == 'file':
file_upload = _get_upload_from_http_post()
s3_attrs = Asset.upload_to_s3(
filename=file_upload['name'],
byte_stream=file_upload['byte_stream'],
course_id=current_user.course.id,
)
asset = Asset.create(
asset_type=asset_type,
categories=category_id and [Category.find_by_id(category_id)],
course_id=current_user.course.id,
description=description,
download_url=s3_attrs.get('download_url', None),
mime=s3_attrs.get('content_type', None),
source=source,
title=title,
url=url,
users=[User.find_by_id(current_user.get_id())],
visible=visible,
)
return tolerant_jsonify(asset.to_api_json())
def test_asset_creation_invisible_no_activities(self,
authorized_user_session):
asset = Asset.create(
asset_type='link',
categories=None,
course_id=authorized_user_session.course.id,
title='Riding in a Stutz Bear Cat, Jim',
url='https://genius.com/The-velvet-underground-sweet-jane-lyrics',
users=[authorized_user_session.user],
visible=False,
)
activities = Activity.query.filter_by(asset_id=asset.id).all()
assert len(activities) == 0
def create_file_submission_assets(self, course, user, category, assignment, submission, file_submission_tracker):
app.logger.info(
f'Will create file assets for submission attachments: '
f'user {user.canvas_user_id}, submission {submission.id}, assignment {assignment.id}, {_format_course(course)}')
for attachment in getattr(submission, 'attachments', []):
try:
if attachment['size'] > 10485760:
app.logger.debug('Attachment too large, will not process.')
continue
existing_submission_asset = file_submission_tracker.get(attachment['id'], None)
if existing_submission_asset:
app.logger.debug(f'Adding new user to existing file asset: user {user.canvas_user_id}, asset {existing_submission_asset.id}.')
existing_submission_asset.users.append(user)
db.session.add(existing_submission_asset)
std_commit()
else:
s3_attrs = Asset.upload_to_s3(
filename=attachment['filename'],
byte_stream=urlopen(attachment['url']).read(),
course_id=course.id,
)
file_submission_tracker[attachment['id']] = Asset.create(
asset_type='file',
canvas_assignment_id=assignment.id,
categories=[category],
course_id=course.id,
download_url=s3_attrs.get('download_url', None),
mime=s3_attrs.get('content_type', None),
title=attachment['filename'],
users=[user],
create_activity=False,
)
except Exception as e:
app.logger.error(
f'Failed to create file asset for an attachment: '
f'user {user.canvas_user_id}, submission {submission.id}, assignment {assignment.id}, {_format_course(course)}')
app.logger.exception(e)
def test_asset_creation_activity(self, authorized_user_session):
asset = Asset.create(
asset_type='link',
categories=None,
course_id=authorized_user_session.course.id,
title='Riding in a Stutz Bear Cat, Jim',
url='https://genius.com/The-velvet-underground-sweet-jane-lyrics',
users=[authorized_user_session.user],
)
activities = Activity.query.filter_by(asset_id=asset.id).all()
assert len(activities) == 1
assert activities[0].activity_type == 'asset_add'
assert activities[0].course_id == authorized_user_session.course.id
assert activities[0].object_type == 'asset'
assert activities[0].object_id == asset.id
assert activities[0].asset_id == asset.id
assert activities[0].user_id == authorized_user_session.user.id
def test_assets_for_course(self, authorized_user_session):
asset_feed = Asset.get_assets(authorized_user_session,
sort='recent',
offset=0,
limit=20,
filters={})
# Feed shape
assert asset_feed['offset'] == 0
assert asset_feed['total'] == 2
assert len(asset_feed['results']) == 2
# Ordering
assert asset_feed['results'][0]['id'] > asset_feed['results'][1]['id']
# Asset structure
for asset in asset_feed['results']:
assert asset['body'] is None
assert asset['canvasAssignmentId'] is None
assert asset['commentCount'] == 0
assert asset['courseId'] == authorized_user_session.course.id
assert asset['createdAt'] is not None
assert asset['deletedAt'] is None
assert asset['description'] is None
assert asset['downloadUrl'] is None
assert asset['imageUrl'] is None
assert asset['liked'] is False
assert asset['likes'] == 0
assert asset['mime'] is None
assert asset['pdfUrl'] is None
assert asset['previewMetadata'] == '{}'
assert asset['previewStatus'] == 'pending'
assert asset['source'] is None
assert asset['thumbnailUrl'] is None
assert asset['title'] is not None
assert asset['type'] == 'link'
assert asset['createdAt'] is not None
assert asset['updatedAt'] is not None
assert asset['views'] == 0
assert asset['visible'] is True
assert len(asset['users']) == 1
assert asset['users'][0]['id'] == authorized_user_session.user.id
assert asset['users'][0]['canvasFullName'] == 'Oliver Heyer'
assert asset['users'][0]['canvasUserId'] == 9876543
assert asset['users'][0]['canvasCourseRole'] == 'Teacher'
assert asset['users'][0]['canvasEnrollmentState'] == 'active'
assert 'canvasCourseSections' in asset['users'][0]
assert 'canvasImage' in asset['users'][0]
def download(asset_id):
asset = Asset.find_by_id(asset_id)
s3_url = asset.download_url
if asset and s3_url and can_view_asset(asset=asset, user=current_user):
stream = stream_object(s3_url)
if stream:
now = datetime.now().strftime('%Y-%m-%d_%H-%M-%S')
name = re.sub(r'[^a-zA-Z0-9]', '_', asset.title)
extension = s3_url.rsplit('.', 1)[-1]
return Response(
stream,
headers={
'Content-disposition':
f'attachment; filename="{name}_{now}.{extension}"',
},
)
raise ResourceNotFoundError(f'Asset {asset_id} not found.')
def create_comment():
params = request.get_json()
asset_id = params.get('assetId')
asset = Asset.find_by_id(asset_id=asset_id)
if asset and can_view_asset(asset=asset, user=current_user):
body = params.get('body', '').strip()
if not body:
raise BadRequestError('Comment body is required.')
parent_id = params.get('parentId')
comment = Comment.create(
asset=asset,
user_id=current_user.user_id,
body=body,
parent_id=parent_id and int(parent_id),
)
return tolerant_jsonify(_decorate_comments([comment.to_api_json()])[0])
else:
raise ResourceNotFoundError(
'Asset is either unavailable or non-existent.')
def get_assets():
params = request.get_json()
sort = _get(params, 'sort', None)
offset = params.get('offset')
limit = params.get('limit')
filters = {
'asset_type': _get(params, 'assetType', None),
'category_id': _get(params, 'categoryId', None),
'has_comments': _get(params, 'hasComments', None),
'has_likes': _get(params, 'hasLikes', None),
'has_views': _get(params, 'hasViews', None),
'keywords': _get(params, 'keywords', None),
'order_by': _get(params, 'orderBy', 'recent'),
'owner_id': _get(params, 'userId', None),
'section_id': _get(params, 'sectionId', None),
}
results = Asset.get_assets(session=current_user,
sort=sort,
offset=offset,
limit=limit,
filters=filters)
return tolerant_jsonify(results)
