##// END OF EJS Templates
Fix race condition in javascript kernel message processing...
Fix race condition in javascript kernel message processing Because the binary messages are now deserialized using the asynchronous FileReader API, we need to have some way to force the messages to still be processed in the order they are received. This patch implements a simple processing queue using promises.

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handlers.py
56 lines | 1.7 KiB | text/x-python | PythonLexer
"""Tornado handlers for the live notebook view."""
# Copyright (c) IPython Development Team.
# Distributed under the terms of the Modified BSD License.
import os
from tornado import web
HTTPError = web.HTTPError
from ..base.handlers import (
IPythonHandler, FilesRedirectHandler, path_regex,
)
from ..utils import url_escape
class NotebookHandler(IPythonHandler):
@web.authenticated
def get(self, path):
"""get renders the notebook template if a name is given, or
redirects to the '/files/' handler if the name is not given."""
path = path.strip('/')
cm = self.contents_manager
# will raise 404 on not found
try:
model = cm.get(path, content=False)
except web.HTTPError as e:
if e.status_code == 404 and 'files' in path.split('/'):
# 404, but '/files/' in URL, let FilesRedirect take care of it
return FilesRedirectHandler.redirect_to_files(self, path)
else:
raise
if model['type'] != 'notebook':
# not a notebook, redirect to files
return FilesRedirectHandler.redirect_to_files(self, path)
name = url_escape(path.rsplit('/', 1)[-1])
path = url_escape(path)
self.write(self.render_template('notebook.html',
notebook_path=path,
notebook_name=name,
kill_kernel=False,
mathjax_url=self.mathjax_url,
)
)
#-----------------------------------------------------------------------------
# URL to handler mappings
#-----------------------------------------------------------------------------
default_handlers = [
(r"/notebooks%s" % path_regex, NotebookHandler),
]