|
|
"""A tornado based IPython notebook server.
|
|
|
|
|
|
Authors:
|
|
|
|
|
|
* Brian Granger
|
|
|
"""
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Copyright (C) 2008-2011 The IPython Development Team
|
|
|
#
|
|
|
# Distributed under the terms of the BSD License. The full license is in
|
|
|
# the file COPYING, distributed as part of this software.
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Imports
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
# stdlib
|
|
|
import errno
|
|
|
import logging
|
|
|
import os
|
|
|
import signal
|
|
|
import socket
|
|
|
import sys
|
|
|
import threading
|
|
|
import webbrowser
|
|
|
|
|
|
# Third party
|
|
|
import zmq
|
|
|
|
|
|
# Install the pyzmq ioloop. This has to be done before anything else from
|
|
|
# tornado is imported.
|
|
|
from zmq.eventloop import ioloop
|
|
|
# FIXME: ioloop.install is new in pyzmq-2.1.7, so remove this conditional
|
|
|
# when pyzmq dependency is updated beyond that.
|
|
|
if hasattr(ioloop, 'install'):
|
|
|
ioloop.install()
|
|
|
else:
|
|
|
import tornado.ioloop
|
|
|
tornado.ioloop.IOLoop = ioloop.IOLoop
|
|
|
|
|
|
from tornado import httpserver
|
|
|
from tornado import web
|
|
|
|
|
|
# Our own libraries
|
|
|
from .kernelmanager import MappingKernelManager
|
|
|
from .handlers import (LoginHandler, LogoutHandler,
|
|
|
ProjectDashboardHandler, NewHandler, NamedNotebookHandler,
|
|
|
MainKernelHandler, KernelHandler, KernelActionHandler, IOPubHandler,
|
|
|
ShellHandler, NotebookRootHandler, NotebookHandler, NotebookCopyHandler,
|
|
|
RSTHandler, AuthenticatedFileHandler, PrintNotebookHandler
|
|
|
)
|
|
|
from .notebookmanager import NotebookManager
|
|
|
|
|
|
from IPython.config.application import catch_config_error, boolean_flag
|
|
|
from IPython.core.application import BaseIPythonApplication
|
|
|
from IPython.core.profiledir import ProfileDir
|
|
|
from IPython.lib.kernel import swallow_argv
|
|
|
from IPython.zmq.session import Session, default_secure
|
|
|
from IPython.zmq.zmqshell import ZMQInteractiveShell
|
|
|
from IPython.zmq.ipkernel import (
|
|
|
flags as ipkernel_flags,
|
|
|
aliases as ipkernel_aliases,
|
|
|
IPKernelApp
|
|
|
)
|
|
|
from IPython.utils.traitlets import Dict, Unicode, Integer, List, Enum, Bool
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Module globals
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
_kernel_id_regex = r"(?P<kernel_id>\w+-\w+-\w+-\w+-\w+)"
|
|
|
_kernel_action_regex = r"(?P<action>restart|interrupt)"
|
|
|
_notebook_id_regex = r"(?P<notebook_id>\w+-\w+-\w+-\w+-\w+)"
|
|
|
|
|
|
LOCALHOST = '127.0.0.1'
|
|
|
|
|
|
_examples = """
|
|
|
ipython notebook # start the notebook
|
|
|
ipython notebook --profile=sympy # use the sympy profile
|
|
|
ipython notebook --pylab=inline # pylab in inline plotting mode
|
|
|
ipython notebook --certfile=mycert.pem # use SSL/TLS certificate
|
|
|
ipython notebook --port=5555 --ip=* # Listen on port 5555, all interfaces
|
|
|
"""
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Helper functions
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
def url_path_join(a,b):
|
|
|
if a.endswith('/') and b.startswith('/'):
|
|
|
return a[:-1]+b
|
|
|
else:
|
|
|
return a+b
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# The Tornado web application
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
class NotebookWebApplication(web.Application):
|
|
|
|
|
|
def __init__(self, ipython_app, kernel_manager, notebook_manager, log,
|
|
|
base_project_url, settings_overrides):
|
|
|
handlers = [
|
|
|
(r"/", ProjectDashboardHandler),
|
|
|
(r"/login", LoginHandler),
|
|
|
(r"/logout", LogoutHandler),
|
|
|
(r"/new", NewHandler),
|
|
|
(r"/%s" % _notebook_id_regex, NamedNotebookHandler),
|
|
|
(r"/%s/copy" % _notebook_id_regex, NotebookCopyHandler),
|
|
|
(r"/%s/print" % _notebook_id_regex, PrintNotebookHandler),
|
|
|
(r"/kernels", MainKernelHandler),
|
|
|
(r"/kernels/%s" % _kernel_id_regex, KernelHandler),
|
|
|
(r"/kernels/%s/%s" % (_kernel_id_regex, _kernel_action_regex), KernelActionHandler),
|
|
|
(r"/kernels/%s/iopub" % _kernel_id_regex, IOPubHandler),
|
|
|
(r"/kernels/%s/shell" % _kernel_id_regex, ShellHandler),
|
|
|
(r"/notebooks", NotebookRootHandler),
|
|
|
(r"/notebooks/%s" % _notebook_id_regex, NotebookHandler),
|
|
|
(r"/rstservice/render", RSTHandler),
|
|
|
(r"/files/(.*)", AuthenticatedFileHandler, {'path' : notebook_manager.notebook_dir}),
|
|
|
]
|
|
|
settings = dict(
|
|
|
template_path=os.path.join(os.path.dirname(__file__), "templates"),
|
|
|
static_path=os.path.join(os.path.dirname(__file__), "static"),
|
|
|
cookie_secret=os.urandom(1024),
|
|
|
login_url="/login",
|
|
|
)
|
|
|
|
|
|
# allow custom overrides for the tornado web app.
|
|
|
settings.update(settings_overrides)
|
|
|
|
|
|
# prepend base_project_url onto the patterns that we match
|
|
|
new_handlers = []
|
|
|
for handler in handlers:
|
|
|
pattern = url_path_join(base_project_url, handler[0])
|
|
|
new_handler = tuple([pattern]+list(handler[1:]))
|
|
|
new_handlers.append( new_handler )
|
|
|
|
|
|
super(NotebookWebApplication, self).__init__(new_handlers, **settings)
|
|
|
|
|
|
self.kernel_manager = kernel_manager
|
|
|
self.log = log
|
|
|
self.notebook_manager = notebook_manager
|
|
|
self.ipython_app = ipython_app
|
|
|
self.read_only = self.ipython_app.read_only
|
|
|
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Aliases and Flags
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
flags = dict(ipkernel_flags)
|
|
|
flags['no-browser']=(
|
|
|
{'NotebookApp' : {'open_browser' : False}},
|
|
|
"Don't open the notebook in a browser after startup."
|
|
|
)
|
|
|
flags['no-mathjax']=(
|
|
|
{'NotebookApp' : {'enable_mathjax' : False}},
|
|
|
"""Disable MathJax
|
|
|
|
|
|
MathJax is the javascript library IPython uses to render math/LaTeX. It is
|
|
|
very large, so you may want to disable it if you have a slow internet
|
|
|
connection, or for offline use of the notebook.
|
|
|
|
|
|
When disabled, equations etc. will appear as their untransformed TeX source.
|
|
|
"""
|
|
|
)
|
|
|
flags['read-only'] = (
|
|
|
{'NotebookApp' : {'read_only' : True}},
|
|
|
"""Allow read-only access to notebooks.
|
|
|
|
|
|
When using a password to protect the notebook server, this flag
|
|
|
allows unauthenticated clients to view the notebook list, and
|
|
|
individual notebooks, but not edit them, start kernels, or run
|
|
|
code.
|
|
|
|
|
|
If no password is set, the server will be entirely read-only.
|
|
|
"""
|
|
|
)
|
|
|
|
|
|
# Add notebook manager flags
|
|
|
flags.update(boolean_flag('script', 'NotebookManager.save_script',
|
|
|
'Auto-save a .py script everytime the .ipynb notebook is saved',
|
|
|
'Do not auto-save .py scripts for every notebook'))
|
|
|
|
|
|
# the flags that are specific to the frontend
|
|
|
# these must be scrubbed before being passed to the kernel,
|
|
|
# or it will raise an error on unrecognized flags
|
|
|
notebook_flags = ['no-browser', 'no-mathjax', 'read-only', 'script', 'no-script']
|
|
|
|
|
|
aliases = dict(ipkernel_aliases)
|
|
|
|
|
|
aliases.update({
|
|
|
'ip': 'NotebookApp.ip',
|
|
|
'port': 'NotebookApp.port',
|
|
|
'keyfile': 'NotebookApp.keyfile',
|
|
|
'certfile': 'NotebookApp.certfile',
|
|
|
'notebook-dir': 'NotebookManager.notebook_dir',
|
|
|
})
|
|
|
|
|
|
# remove ipkernel flags that are singletons, and don't make sense in
|
|
|
# multi-kernel evironment:
|
|
|
aliases.pop('f', None)
|
|
|
|
|
|
notebook_aliases = [u'port', u'ip', u'keyfile', u'certfile',
|
|
|
u'notebook-dir']
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# NotebookApp
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
class NotebookApp(BaseIPythonApplication):
|
|
|
|
|
|
name = 'ipython-notebook'
|
|
|
default_config_file_name='ipython_notebook_config.py'
|
|
|
|
|
|
description = """
|
|
|
The IPython HTML Notebook.
|
|
|
|
|
|
This launches a Tornado based HTML Notebook Server that serves up an
|
|
|
HTML5/Javascript Notebook client.
|
|
|
"""
|
|
|
examples = _examples
|
|
|
|
|
|
classes = [IPKernelApp, ZMQInteractiveShell, ProfileDir, Session,
|
|
|
MappingKernelManager, NotebookManager]
|
|
|
flags = Dict(flags)
|
|
|
aliases = Dict(aliases)
|
|
|
|
|
|
kernel_argv = List(Unicode)
|
|
|
|
|
|
log_level = Enum((0,10,20,30,40,50,'DEBUG','INFO','WARN','ERROR','CRITICAL'),
|
|
|
default_value=logging.INFO,
|
|
|
config=True,
|
|
|
help="Set the log level by value or name.")
|
|
|
|
|
|
# create requested profiles by default, if they don't exist:
|
|
|
auto_create = Bool(True)
|
|
|
|
|
|
# Network related information.
|
|
|
|
|
|
ip = Unicode(LOCALHOST, config=True,
|
|
|
help="The IP address the notebook server will listen on."
|
|
|
)
|
|
|
|
|
|
def _ip_changed(self, name, old, new):
|
|
|
if new == u'*': self.ip = u''
|
|
|
|
|
|
port = Integer(8888, config=True,
|
|
|
help="The port the notebook server will listen on."
|
|
|
)
|
|
|
|
|
|
certfile = Unicode(u'', config=True,
|
|
|
help="""The full path to an SSL/TLS certificate file."""
|
|
|
)
|
|
|
|
|
|
keyfile = Unicode(u'', config=True,
|
|
|
help="""The full path to a private key file for usage with SSL/TLS."""
|
|
|
)
|
|
|
|
|
|
password = Unicode(u'', config=True,
|
|
|
help="""Hashed password to use for web authentication.
|
|
|
|
|
|
To generate, type in a python/IPython shell:
|
|
|
|
|
|
from IPython.lib import passwd; passwd()
|
|
|
|
|
|
The string should be of the form type:salt:hashed-password.
|
|
|
"""
|
|
|
)
|
|
|
|
|
|
open_browser = Bool(True, config=True,
|
|
|
help="Whether to open in a browser after starting.")
|
|
|
|
|
|
read_only = Bool(False, config=True,
|
|
|
help="Whether to prevent editing/execution of notebooks."
|
|
|
)
|
|
|
|
|
|
webapp_settings = Dict(config=True,
|
|
|
help="Supply overrides for the tornado.web.Application that the "
|
|
|
"IPython notebook uses.")
|
|
|
|
|
|
enable_mathjax = Bool(True, config=True,
|
|
|
help="""Whether to enable MathJax for typesetting math/TeX
|
|
|
|
|
|
MathJax is the javascript library IPython uses to render math/LaTeX. It is
|
|
|
very large, so you may want to disable it if you have a slow internet
|
|
|
connection, or for offline use of the notebook.
|
|
|
|
|
|
When disabled, equations etc. will appear as their untransformed TeX source.
|
|
|
"""
|
|
|
)
|
|
|
def _enable_mathjax_changed(self, name, old, new):
|
|
|
"""set mathjax url to empty if mathjax is disabled"""
|
|
|
if not new:
|
|
|
self.mathjax_url = u''
|
|
|
|
|
|
base_project_url = Unicode('/', config=True,
|
|
|
help='''The base URL for the notebook server''')
|
|
|
base_kernel_url = Unicode('/', config=True,
|
|
|
help='''The base URL for the kernel server''')
|
|
|
websocket_host = Unicode("", config=True,
|
|
|
help="""The hostname for the websocket server."""
|
|
|
)
|
|
|
|
|
|
mathjax_url = Unicode("", config=True,
|
|
|
help="""The url for MathJax.js."""
|
|
|
)
|
|
|
def _mathjax_url_default(self):
|
|
|
if not self.enable_mathjax:
|
|
|
return u''
|
|
|
static_path = self.webapp_settings.get("static_path", os.path.join(os.path.dirname(__file__), "static"))
|
|
|
static_url_prefix = self.webapp_settings.get("static_url_prefix",
|
|
|
"/static/")
|
|
|
if os.path.exists(os.path.join(static_path, 'mathjax', "MathJax.js")):
|
|
|
self.log.info("Using local MathJax")
|
|
|
return static_url_prefix+u"mathjax/MathJax.js"
|
|
|
else:
|
|
|
self.log.info("Using MathJax from CDN")
|
|
|
return u"http://cdn.mathjax.org/mathjax/latest/MathJax.js"
|
|
|
|
|
|
def _mathjax_url_changed(self, name, old, new):
|
|
|
if new and not self.enable_mathjax:
|
|
|
# enable_mathjax=False overrides mathjax_url
|
|
|
self.mathjax_url = u''
|
|
|
else:
|
|
|
self.log.info("Using MathJax: %s", new)
|
|
|
|
|
|
def parse_command_line(self, argv=None):
|
|
|
super(NotebookApp, self).parse_command_line(argv)
|
|
|
if argv is None:
|
|
|
argv = sys.argv[1:]
|
|
|
|
|
|
# Scrub frontend-specific flags
|
|
|
self.kernel_argv = swallow_argv(argv, notebook_aliases, notebook_flags)
|
|
|
# Kernel should inherit default config file from frontend
|
|
|
self.kernel_argv.append("--KernelApp.parent_appname='%s'"%self.name)
|
|
|
|
|
|
def init_configurables(self):
|
|
|
# force Session default to be secure
|
|
|
default_secure(self.config)
|
|
|
# Create a KernelManager and start a kernel.
|
|
|
self.kernel_manager = MappingKernelManager(
|
|
|
config=self.config, log=self.log, kernel_argv=self.kernel_argv,
|
|
|
connection_dir = self.profile_dir.security_dir,
|
|
|
)
|
|
|
self.notebook_manager = NotebookManager(config=self.config, log=self.log)
|
|
|
self.notebook_manager.list_notebooks()
|
|
|
|
|
|
def init_logging(self):
|
|
|
super(NotebookApp, self).init_logging()
|
|
|
# This prevents double log messages because tornado use a root logger that
|
|
|
# self.log is a child of. The logging module dipatches log messages to a log
|
|
|
# and all of its ancenstors until propagate is set to False.
|
|
|
self.log.propagate = False
|
|
|
|
|
|
def init_webapp(self):
|
|
|
"""initialize tornado webapp and httpserver"""
|
|
|
self.web_app = NotebookWebApplication(
|
|
|
self, self.kernel_manager, self.notebook_manager, self.log,
|
|
|
self.base_project_url, self.webapp_settings
|
|
|
)
|
|
|
if self.certfile:
|
|
|
ssl_options = dict(certfile=self.certfile)
|
|
|
if self.keyfile:
|
|
|
ssl_options['keyfile'] = self.keyfile
|
|
|
else:
|
|
|
ssl_options = None
|
|
|
self.web_app.password = self.password
|
|
|
self.http_server = httpserver.HTTPServer(self.web_app, ssl_options=ssl_options)
|
|
|
if ssl_options is None and not self.ip and not (self.read_only and not self.password):
|
|
|
self.log.critical('WARNING: the notebook server is listening on all IP addresses '
|
|
|
'but not using any encryption or authentication. This is highly '
|
|
|
'insecure and not recommended.')
|
|
|
|
|
|
# Try random ports centered around the default.
|
|
|
from random import randint
|
|
|
n = 50 # Max number of attempts, keep reasonably large.
|
|
|
for port in range(self.port, self.port+5) + [self.port + randint(-2*n, 2*n) for i in range(n-5)]:
|
|
|
try:
|
|
|
self.http_server.listen(port, self.ip)
|
|
|
except socket.error, e:
|
|
|
if e.errno != errno.EADDRINUSE:
|
|
|
raise
|
|
|
self.log.info('The port %i is already in use, trying another random port.' % port)
|
|
|
else:
|
|
|
self.port = port
|
|
|
break
|
|
|
|
|
|
@catch_config_error
|
|
|
def initialize(self, argv=None):
|
|
|
super(NotebookApp, self).initialize(argv)
|
|
|
self.init_configurables()
|
|
|
self.init_webapp()
|
|
|
|
|
|
def cleanup_kernels(self):
|
|
|
"""shutdown all kernels
|
|
|
|
|
|
The kernels will shutdown themselves when this process no longer exists,
|
|
|
but explicit shutdown allows the KernelManagers to cleanup the connection files.
|
|
|
"""
|
|
|
self.log.info('Shutting down kernels')
|
|
|
km = self.kernel_manager
|
|
|
# copy list, since kill_kernel deletes keys
|
|
|
for kid in list(km.kernel_ids):
|
|
|
km.kill_kernel(kid)
|
|
|
|
|
|
def start(self):
|
|
|
ip = self.ip if self.ip else '[all ip addresses on your system]'
|
|
|
proto = 'https' if self.certfile else 'http'
|
|
|
info = self.log.info
|
|
|
info("The IPython Notebook is running at: %s://%s:%i%s" %
|
|
|
(proto, ip, self.port,self.base_project_url) )
|
|
|
info("Use Control-C to stop this server and shut down all kernels.")
|
|
|
|
|
|
if self.open_browser:
|
|
|
ip = self.ip or '127.0.0.1'
|
|
|
b = lambda : webbrowser.open("%s://%s:%i%s" % (proto, ip, self.port,
|
|
|
self.base_project_url),
|
|
|
new=2)
|
|
|
threading.Thread(target=b).start()
|
|
|
try:
|
|
|
ioloop.IOLoop.instance().start()
|
|
|
except KeyboardInterrupt:
|
|
|
info("Interrupted...")
|
|
|
finally:
|
|
|
self.cleanup_kernels()
|
|
|
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Main entry point
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
def launch_new_instance():
|
|
|
app = NotebookApp.instance()
|
|
|
app.initialize()
|
|
|
app.start()
|
|
|
|
|
|
|
