def get(self, cluster, environ, topology, container):
# If the file is large, we want to abandon downloading
# if user cancels the requests.
self.connection_closed = False
path = self.get_argument("path")
filename = path.split("/")[-1]
self.set_header("Content-Disposition", "attachment; filename=%s" % filename)
# Download the files in chunks. We are downloading from Tracker,
# which in turns downloads from heron-shell. This much indirection
# means that if we use static file downloading, the whole files would
# be cached in memory before it can be sent downstream. Hence, we reuse
# the file data API to read in chunks until the EOF, or until the download
# is cancelled by user.
# 4 MB gives good enough chunk size giving good speed for small files.
# If files are large, a single threaded download may not be enough.
length = 4 * 1024 * 1024
offset = 0
while True:
response = yield access.get_container_file_data(cluster, environ, topology, container, path, offset, length)
if self.connection_closed or 'data' not in response or len(response['data']) < length:
break
offset += length
self.write(response['data'])
self.flush()
self.write(response['data'])
self.finish()
def get(self, cluster, environ, topology, container):
# If the file is large, we want to abandon downloading
# if user cancels the requests.
self.connection_closed = False
path = self.get_argument("path")
filename = path.split("/")[-1]
self.set_header("Content-Disposition",
"attachment; filename=%s" % filename)
# Download the files in chunks. We are downloading from Tracker,
# which in turns downloads from heron-shell. This much indirection
# means that if we use static file downloading, the whole files would
# be cached in memory before it can be sent downstream. Hence, we reuse
# the file data API to read in chunks until the EOF, or until the download
# is cancelled by user.
# 4 MB gives good enough chunk size giving good speed for small files.
# If files are large, a single threaded download may not be enough.
length = 4 * 1024 * 1024
offset = 0
while True:
response = yield access.get_container_file_data(
cluster, environ, topology, container, path, offset, length)
if self.connection_closed or 'data' not in response or len(
response['data']) < length:
break
offset += length
self.write(response['data'])
self.flush()
self.write(response['data'])
self.finish()
def get(self, cluster, environ, topology, container):
offset = self.get_argument("offset")
length = self.get_argument("length")
path = self.get_argument("path")
data = yield access.get_container_file_data(cluster, environ, topology, container, path, offset, length)
self.write(data)
self.finish()
def get(self, cluster, environ, topology, container):
offset = self.get_argument("offset")
length = self.get_argument("length")
path = self.get_argument("path")
data = yield access.get_container_file_data(cluster, environ, topology,
container, path, offset,
length)
self.write(data)
self.finish()
