def __init__(self, database, *args, **kwargs):
if not isinstance(database, Database):
raise TypeError(
"Expected Database, got %s" % repr(database))
self.delegate = motor.MotorGridFSBucket(
database.delegate, *args, **kwargs)
async def test_iteration(self):
fs = motor.MotorGridFSBucket(self.db)
_id = await fs.upload_from_stream('filename', b'foo')
g = motor.MotorGridOut(self.db.fs, _id)
# Iteration is prohibited.
self.assertRaises(TypeError, iter, g)
def __init__(self, database, bucket_name='fs', disable_md5=False):
if not isinstance(database, Database):
raise TypeError(
"Expected Database, got %s" % repr(database))
self.delegate = motor.MotorGridFSBucket(
database.delegate, bucket_name, disable_md5)
def get(self, filename):
db = self.settings['db']
fs = motor.MotorGridFSBucket(db)
try:
#file_id = yield fs.upload_from_stream(filename)
grid_out = yield fs.open_download_stream_by_name(filename)
except gridfs.NoFile:
raise tornado.web.HTTPError(404)
yield grid_out.stream_to_handler(self)
self.finish()
async def test_stream_to_handler(self):
fs = motor.MotorGridFSBucket(self.db)
for content_length in (0, 1, 100, 100 * 1000):
_id = await fs.upload_from_stream('filename', b'a' * content_length)
gridout = await fs.open_download_stream(_id)
handler = MockRequestHandler()
await gridout.stream_to_handler(handler)
self.assertEqual(content_length, handler.n_written)
await fs.delete(_id)
def setUp(self):
super().setUp()
self.io_loop.run_sync(self._reset)
self.bucket = motor.MotorGridFSBucket(self.db)
async def get(self, path, include_body=True):
fs = motor.MotorGridFSBucket(self.database, self.root_collection)
try:
gridout = await self.get_gridfs_file(fs, path, self.request)
except gridfs.NoFile:
raise tornado.web.HTTPError(404)
# If-Modified-Since header is only good to the second.
modified = gridout.upload_date.replace(microsecond=0)
self.set_header("Last-Modified", modified)
# MD5 is calculated on the MongoDB server when GridFS file is created
self.set_header("Etag", '"%s"' % gridout.md5)
mime_type = gridout.content_type
# If content type is not defined, try to check it with mimetypes
if mime_type is None:
mime_type, encoding = mimetypes.guess_type(path)
# Starting from here, largely a copy of StaticFileHandler
if mime_type:
self.set_header("Content-Type", mime_type)
cache_time = self.get_cache_time(path, modified, mime_type)
if cache_time > 0:
self.set_header(
"Expires",
datetime.datetime.utcnow() +
datetime.timedelta(seconds=cache_time))
self.set_header("Cache-Control", "max-age=" + str(cache_time))
else:
self.set_header("Cache-Control", "public")
self.set_extra_headers(path, gridout)
# Check the If-Modified-Since, and don't send the result if the
# content has not been modified
ims_value = self.request.headers.get("If-Modified-Since")
if ims_value is not None:
date_tuple = email.utils.parsedate(ims_value)
# If our MotorClient is tz-aware, assume the naive ims_value is in
# its time zone.
if_since = datetime.datetime.fromtimestamp(
time.mktime(date_tuple)).replace(tzinfo=modified.tzinfo)
if if_since >= modified:
self.set_status(304)
return
# Same for Etag
etag = self.request.headers.get("If-None-Match")
if etag is not None and etag.strip('"') == gridout.md5:
self.set_status(304)
return
self.set_header("Content-Length", gridout.length)
if include_body:
await gridout.stream_to_handler(self)
# Needed until fix for Tornado bug 751 is released, see
# https://github.com/facebook/tornado/issues/751 and
# https://github.com/facebook/tornado/commit/5491685
self.finish()
