2005 lines
76 KiB
Python
2005 lines
76 KiB
Python
# coding: utf-8
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"""A tornado based Jupyter notebook server."""
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# Copyright (c) Jupyter Development Team.
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# Distributed under the terms of the Modified BSD License.
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from __future__ import absolute_import, print_function
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import notebook
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import binascii
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import datetime
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import errno
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import gettext
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import hashlib
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import hmac
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import importlib
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import io
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import ipaddress
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import json
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import logging
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import mimetypes
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import os
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import random
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import re
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import select
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import signal
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import socket
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import sys
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import tempfile
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import threading
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import time
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import warnings
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import webbrowser
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try:
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import resource
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except ImportError:
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# Windows
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resource = None
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from base64 import encodebytes
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from jinja2 import Environment, FileSystemLoader
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from notebook.transutils import trans, _
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# Install the pyzmq ioloop. This has to be done before anything else from
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# tornado is imported.
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from zmq.eventloop import ioloop
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ioloop.install()
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# check for tornado 3.1.0
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try:
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import tornado
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except ImportError:
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raise ImportError(_("The Jupyter Notebook requires tornado >= 4.0"))
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try:
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version_info = tornado.version_info
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except AttributeError:
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raise ImportError(_("The Jupyter Notebook requires tornado >= 4.0, but you have < 1.1.0"))
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if version_info < (4,0):
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raise ImportError(_("The Jupyter Notebook requires tornado >= 4.0, but you have %s") % tornado.version)
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from tornado import httpserver
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from tornado import web
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from tornado.httputil import url_concat
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from tornado.log import LogFormatter, app_log, access_log, gen_log
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from notebook import (
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DEFAULT_STATIC_FILES_PATH,
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DEFAULT_TEMPLATE_PATH_LIST,
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__version__,
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)
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from .base.handlers import Template404, RedirectWithParams
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from .log import log_request
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from .services.kernels.kernelmanager import MappingKernelManager
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from .services.config import ConfigManager
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from .services.contents.manager import ContentsManager
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from .services.contents.filemanager import FileContentsManager
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from .services.contents.largefilemanager import LargeFileManager
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from .services.sessions.sessionmanager import SessionManager
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from .gateway.managers import GatewayKernelManager, GatewayKernelSpecManager, GatewaySessionManager, GatewayClient
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from .auth.login import LoginHandler
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from .auth.logout import LogoutHandler
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from .base.handlers import FileFindHandler
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from traitlets.config import Config
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from traitlets.config.application import catch_config_error, boolean_flag
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from jupyter_core.application import (
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JupyterApp, base_flags, base_aliases,
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)
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from jupyter_core.paths import jupyter_config_path
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from jupyter_client import KernelManager
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from jupyter_client.kernelspec import KernelSpecManager
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from jupyter_client.session import Session
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from nbformat.sign import NotebookNotary
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from traitlets import (
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Any, Dict, Unicode, Integer, List, Bool, Bytes, Instance,
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TraitError, Type, Float, observe, default, validate
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)
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from ipython_genutils import py3compat
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from jupyter_core.paths import jupyter_runtime_dir, jupyter_path
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from notebook._sysinfo import get_sys_info
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from ._tz import utcnow, utcfromtimestamp
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from .utils import url_path_join, check_pid, url_escape, urljoin, pathname2url
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#-----------------------------------------------------------------------------
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# Module globals
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#-----------------------------------------------------------------------------
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_examples = """
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jupyter notebook # start the notebook
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jupyter notebook --certfile=mycert.pem # use SSL/TLS certificate
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jupyter notebook password # enter a password to protect the server
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"""
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#-----------------------------------------------------------------------------
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# Helper functions
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#-----------------------------------------------------------------------------
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def random_ports(port, n):
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"""Generate a list of n random ports near the given port.
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The first 5 ports will be sequential, and the remaining n-5 will be
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randomly selected in the range [port-2*n, port+2*n].
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"""
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for i in range(min(5, n)):
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yield port + i
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for i in range(n-5):
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yield max(1, port + random.randint(-2*n, 2*n))
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def load_handlers(name):
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"""Load the (URL pattern, handler) tuples for each component."""
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mod = __import__(name, fromlist=['default_handlers'])
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return mod.default_handlers
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#-----------------------------------------------------------------------------
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# The Tornado web application
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#-----------------------------------------------------------------------------
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class NotebookWebApplication(web.Application):
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def __init__(self, jupyter_app, kernel_manager, contents_manager,
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session_manager, kernel_spec_manager,
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config_manager, extra_services, log,
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base_url, default_url, settings_overrides, jinja_env_options):
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settings = self.init_settings(
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jupyter_app, kernel_manager, contents_manager,
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session_manager, kernel_spec_manager, config_manager,
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extra_services, log, base_url,
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default_url, settings_overrides, jinja_env_options)
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handlers = self.init_handlers(settings)
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super(NotebookWebApplication, self).__init__(handlers, **settings)
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def init_settings(self, jupyter_app, kernel_manager, contents_manager,
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session_manager, kernel_spec_manager,
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config_manager, extra_services,
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log, base_url, default_url, settings_overrides,
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jinja_env_options=None):
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_template_path = settings_overrides.get(
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"template_path",
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jupyter_app.template_file_path,
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)
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if isinstance(_template_path, py3compat.string_types):
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_template_path = (_template_path,)
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template_path = [os.path.expanduser(path) for path in _template_path]
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jenv_opt = {"autoescape": True}
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jenv_opt.update(jinja_env_options if jinja_env_options else {})
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env = Environment(loader=FileSystemLoader(template_path), extensions=['jinja2.ext.i18n'], **jenv_opt)
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sys_info = get_sys_info()
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# If the user is running the notebook in a git directory, make the assumption
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# that this is a dev install and suggest to the developer `npm run build:watch`.
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base_dir = os.path.realpath(os.path.join(__file__, '..', '..'))
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dev_mode = os.path.exists(os.path.join(base_dir, '.git'))
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nbui = gettext.translation('nbui', localedir=os.path.join(base_dir, 'notebook/i18n'), fallback=True)
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env.install_gettext_translations(nbui, newstyle=False)
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if dev_mode:
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DEV_NOTE_NPM = """It looks like you're running the notebook from source.
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If you're working on the Javascript of the notebook, try running
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%s
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in another terminal window to have the system incrementally
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watch and build the notebook's JavaScript for you, as you make changes.""" % 'npm run build:watch'
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log.info(DEV_NOTE_NPM)
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if sys_info['commit_source'] == 'repository':
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# don't cache (rely on 304) when working from master
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version_hash = ''
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else:
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# reset the cache on server restart
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version_hash = datetime.datetime.now().strftime("%Y%m%d%H%M%S")
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if jupyter_app.ignore_minified_js:
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log.warning(_("""The `ignore_minified_js` flag is deprecated and no longer works."""))
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log.warning(_("""Alternatively use `%s` when working on the notebook's Javascript and LESS""") % 'npm run build:watch')
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warnings.warn(_("The `ignore_minified_js` flag is deprecated and will be removed in Notebook 6.0"), DeprecationWarning)
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now = utcnow()
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root_dir = contents_manager.root_dir
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home = py3compat.str_to_unicode(os.path.expanduser('~'), encoding=sys.getfilesystemencoding())
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if root_dir.startswith(home + os.path.sep):
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# collapse $HOME to ~
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root_dir = '~' + root_dir[len(home):]
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settings = dict(
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# basics
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log_function=log_request,
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base_url=base_url,
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default_url=default_url,
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template_path=template_path,
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static_path=jupyter_app.static_file_path,
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static_custom_path=jupyter_app.static_custom_path,
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static_handler_class = FileFindHandler,
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static_url_prefix = url_path_join(base_url,'/static/'),
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static_handler_args = {
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# don't cache custom.js
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'no_cache_paths': [url_path_join(base_url, 'static', 'custom')],
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},
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version_hash=version_hash,
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ignore_minified_js=jupyter_app.ignore_minified_js,
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# rate limits
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iopub_msg_rate_limit=jupyter_app.iopub_msg_rate_limit,
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iopub_data_rate_limit=jupyter_app.iopub_data_rate_limit,
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rate_limit_window=jupyter_app.rate_limit_window,
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# authentication
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cookie_secret=jupyter_app.cookie_secret,
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login_url=url_path_join(base_url,'/login'),
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login_handler_class=jupyter_app.login_handler_class,
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logout_handler_class=jupyter_app.logout_handler_class,
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password=jupyter_app.password,
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xsrf_cookies=True,
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disable_check_xsrf=jupyter_app.disable_check_xsrf,
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allow_remote_access=jupyter_app.allow_remote_access,
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local_hostnames=jupyter_app.local_hostnames,
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# managers
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kernel_manager=kernel_manager,
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contents_manager=contents_manager,
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session_manager=session_manager,
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kernel_spec_manager=kernel_spec_manager,
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config_manager=config_manager,
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# handlers
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extra_services=extra_services,
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# Jupyter stuff
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started=now,
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# place for extensions to register activity
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# so that they can prevent idle-shutdown
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last_activity_times={},
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jinja_template_vars=jupyter_app.jinja_template_vars,
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nbextensions_path=jupyter_app.nbextensions_path,
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websocket_url=jupyter_app.websocket_url,
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mathjax_url=jupyter_app.mathjax_url,
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mathjax_config=jupyter_app.mathjax_config,
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shutdown_button=jupyter_app.quit_button,
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config=jupyter_app.config,
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config_dir=jupyter_app.config_dir,
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allow_password_change=jupyter_app.allow_password_change,
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server_root_dir=root_dir,
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jinja2_env=env,
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terminals_available=False, # Set later if terminals are available
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)
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# allow custom overrides for the tornado web app.
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settings.update(settings_overrides)
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return settings
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def init_handlers(self, settings):
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"""Load the (URL pattern, handler) tuples for each component."""
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# Order matters. The first handler to match the URL will handle the request.
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handlers = []
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# load extra services specified by users before default handlers
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for service in settings['extra_services']:
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handlers.extend(load_handlers(service))
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handlers.extend(load_handlers('notebook.tree.handlers'))
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handlers.extend([(r"/login", settings['login_handler_class'])])
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handlers.extend([(r"/logout", settings['logout_handler_class'])])
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handlers.extend(load_handlers('notebook.files.handlers'))
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handlers.extend(load_handlers('notebook.view.handlers'))
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handlers.extend(load_handlers('notebook.notebook.handlers'))
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handlers.extend(load_handlers('notebook.nbconvert.handlers'))
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handlers.extend(load_handlers('notebook.bundler.handlers'))
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handlers.extend(load_handlers('notebook.kernelspecs.handlers'))
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handlers.extend(load_handlers('notebook.edit.handlers'))
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handlers.extend(load_handlers('notebook.services.api.handlers'))
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handlers.extend(load_handlers('notebook.services.config.handlers'))
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handlers.extend(load_handlers('notebook.services.contents.handlers'))
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handlers.extend(load_handlers('notebook.services.sessions.handlers'))
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handlers.extend(load_handlers('notebook.services.nbconvert.handlers'))
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handlers.extend(load_handlers('notebook.services.security.handlers'))
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handlers.extend(load_handlers('notebook.services.shutdown'))
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handlers.extend(load_handlers('notebook.services.kernels.handlers'))
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handlers.extend(load_handlers('notebook.services.kernelspecs.handlers'))
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handlers.extend(settings['contents_manager'].get_extra_handlers())
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# If gateway mode is enabled, replace appropriate handlers to perform redirection
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if GatewayClient.instance().gateway_enabled:
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# for each handler required for gateway, locate its pattern
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# in the current list and replace that entry...
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gateway_handlers = load_handlers('notebook.gateway.handlers')
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for i, gwh in enumerate(gateway_handlers):
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for j, h in enumerate(handlers):
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if gwh[0] == h[0]:
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handlers[j] = (gwh[0], gwh[1])
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break
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handlers.append(
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(r"/nbextensions/(.*)", FileFindHandler, {
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'path': settings['nbextensions_path'],
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'no_cache_paths': ['/'], # don't cache anything in nbextensions
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}),
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)
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handlers.append(
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(r"/custom/(.*)", FileFindHandler, {
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'path': settings['static_custom_path'],
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'no_cache_paths': ['/'], # don't cache anything in custom
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})
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)
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# register base handlers last
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handlers.extend(load_handlers('notebook.base.handlers'))
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# set the URL that will be redirected from `/`
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handlers.append(
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(r'/?', RedirectWithParams, {
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'url' : settings['default_url'],
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'permanent': False, # want 302, not 301
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})
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)
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# prepend base_url onto the patterns that we match
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new_handlers = []
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for handler in handlers:
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pattern = url_path_join(settings['base_url'], handler[0])
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new_handler = tuple([pattern] + list(handler[1:]))
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new_handlers.append(new_handler)
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# add 404 on the end, which will catch everything that falls through
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new_handlers.append((r'(.*)', Template404))
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return new_handlers
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def last_activity(self):
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"""Get a UTC timestamp for when the server last did something.
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Includes: API activity, kernel activity, kernel shutdown, and terminal
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activity.
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"""
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sources = [
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self.settings['started'],
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self.settings['kernel_manager'].last_kernel_activity,
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]
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try:
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sources.append(self.settings['api_last_activity'])
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except KeyError:
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pass
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try:
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sources.append(self.settings['terminal_last_activity'])
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except KeyError:
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pass
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sources.extend(self.settings['last_activity_times'].values())
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return max(sources)
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class NotebookPasswordApp(JupyterApp):
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"""Set a password for the notebook server.
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Setting a password secures the notebook server
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and removes the need for token-based authentication.
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"""
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description = __doc__
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def _config_file_default(self):
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return os.path.join(self.config_dir, 'jupyter_notebook_config.json')
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def start(self):
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from .auth.security import set_password
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set_password(config_file=self.config_file)
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self.log.info("Wrote hashed password to %s" % self.config_file)
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def shutdown_server(server_info, timeout=5, log=None):
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"""Shutdown a notebook server in a separate process.
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*server_info* should be a dictionary as produced by list_running_servers().
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Will first try to request shutdown using /api/shutdown .
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On Unix, if the server is still running after *timeout* seconds, it will
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send SIGTERM. After another timeout, it escalates to SIGKILL.
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Returns True if the server was stopped by any means, False if stopping it
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failed (on Windows).
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"""
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from tornado.httpclient import HTTPClient, HTTPRequest
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url = server_info['url']
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pid = server_info['pid']
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req = HTTPRequest(url + 'api/shutdown', method='POST', body=b'', headers={
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'Authorization': 'token ' + server_info['token']
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})
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if log: log.debug("POST request to %sapi/shutdown", url)
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HTTPClient().fetch(req)
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# Poll to see if it shut down.
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for _ in range(timeout*10):
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if not check_pid(pid):
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if log: log.debug("Server PID %s is gone", pid)
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return True
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time.sleep(0.1)
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if sys.platform.startswith('win'):
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return False
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if log: log.debug("SIGTERM to PID %s", pid)
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os.kill(pid, signal.SIGTERM)
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# Poll to see if it shut down.
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for _ in range(timeout * 10):
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if not check_pid(pid):
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if log: log.debug("Server PID %s is gone", pid)
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return True
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time.sleep(0.1)
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if log: log.debug("SIGKILL to PID %s", pid)
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os.kill(pid, signal.SIGKILL)
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return True # SIGKILL cannot be caught
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class NbserverStopApp(JupyterApp):
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version = __version__
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description="Stop currently running notebook server for a given port"
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port = Integer(8888, config=True,
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help="Port of the server to be killed. Default 8888")
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def parse_command_line(self, argv=None):
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super(NbserverStopApp, self).parse_command_line(argv)
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if self.extra_args:
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self.port=int(self.extra_args[0])
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def shutdown_server(self, server):
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return shutdown_server(server, log=self.log)
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def start(self):
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servers = list(list_running_servers(self.runtime_dir))
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if not servers:
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self.exit("There are no running servers")
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for server in servers:
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if server['port'] == self.port:
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print("Shutting down server on port", self.port, "...")
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if not self.shutdown_server(server):
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sys.exit("Could not stop server")
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return
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else:
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print("There is currently no server running on port {}".format(self.port), file=sys.stderr)
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print("Ports currently in use:", file=sys.stderr)
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for server in servers:
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print(" - {}".format(server['port']), file=sys.stderr)
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self.exit(1)
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class NbserverListApp(JupyterApp):
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version = __version__
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description=_("List currently running notebook servers.")
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flags = dict(
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jsonlist=({'NbserverListApp': {'jsonlist': True}},
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_("Produce machine-readable JSON list output.")),
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json=({'NbserverListApp': {'json': True}},
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_("Produce machine-readable JSON object on each line of output.")),
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|
)
|
|
|
|
jsonlist = Bool(False, config=True,
|
|
help=_("If True, the output will be a JSON list of objects, one per "
|
|
"active notebook server, each with the details from the "
|
|
"relevant server info file."))
|
|
json = Bool(False, config=True,
|
|
help=_("If True, each line of output will be a JSON object with the "
|
|
"details from the server info file. For a JSON list output, "
|
|
"see the NbserverListApp.jsonlist configuration value"))
|
|
|
|
def start(self):
|
|
serverinfo_list = list(list_running_servers(self.runtime_dir))
|
|
if self.jsonlist:
|
|
print(json.dumps(serverinfo_list, indent=2))
|
|
elif self.json:
|
|
for serverinfo in serverinfo_list:
|
|
print(json.dumps(serverinfo))
|
|
else:
|
|
print("Currently running servers:")
|
|
for serverinfo in serverinfo_list:
|
|
url = serverinfo['url']
|
|
if serverinfo.get('token'):
|
|
url = url + '?token=%s' % serverinfo['token']
|
|
print(url, "::", serverinfo['notebook_dir'])
|
|
|
|
#-----------------------------------------------------------------------------
|
|
# Aliases and Flags
|
|
#-----------------------------------------------------------------------------
|
|
|
|
flags = dict(base_flags)
|
|
flags['no-browser']=(
|
|
{'NotebookApp' : {'open_browser' : False}},
|
|
_("Don't open the notebook in a browser after startup.")
|
|
)
|
|
flags['pylab']=(
|
|
{'NotebookApp' : {'pylab' : 'warn'}},
|
|
_("DISABLED: use %pylab or %matplotlib in the notebook to enable matplotlib.")
|
|
)
|
|
flags['no-mathjax']=(
|
|
{'NotebookApp' : {'enable_mathjax' : False}},
|
|
"""Disable MathJax
|
|
|
|
MathJax is the javascript library Jupyter 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['allow-root']=(
|
|
{'NotebookApp' : {'allow_root' : True}},
|
|
_("Allow the notebook to be run from root user.")
|
|
)
|
|
|
|
# Add notebook manager flags
|
|
flags.update(boolean_flag('script', 'FileContentsManager.save_script',
|
|
'DEPRECATED, IGNORED',
|
|
'DEPRECATED, IGNORED'))
|
|
|
|
aliases = dict(base_aliases)
|
|
|
|
aliases.update({
|
|
'ip': 'NotebookApp.ip',
|
|
'port': 'NotebookApp.port',
|
|
'port-retries': 'NotebookApp.port_retries',
|
|
'transport': 'KernelManager.transport',
|
|
'keyfile': 'NotebookApp.keyfile',
|
|
'certfile': 'NotebookApp.certfile',
|
|
'client-ca': 'NotebookApp.client_ca',
|
|
'notebook-dir': 'NotebookApp.notebook_dir',
|
|
'browser': 'NotebookApp.browser',
|
|
'pylab': 'NotebookApp.pylab',
|
|
'gateway-url': 'GatewayClient.url',
|
|
})
|
|
|
|
#-----------------------------------------------------------------------------
|
|
# NotebookApp
|
|
#-----------------------------------------------------------------------------
|
|
|
|
class NotebookApp(JupyterApp):
|
|
|
|
name = 'jupyter-notebook'
|
|
version = __version__
|
|
description = _("""The Jupyter HTML Notebook.
|
|
|
|
This launches a Tornado based HTML Notebook Server that serves up an HTML5/Javascript Notebook client.""")
|
|
examples = _examples
|
|
aliases = aliases
|
|
flags = flags
|
|
|
|
classes = [
|
|
KernelManager, Session, MappingKernelManager, KernelSpecManager,
|
|
ContentsManager, FileContentsManager, NotebookNotary,
|
|
GatewayKernelManager, GatewayKernelSpecManager, GatewaySessionManager, GatewayClient,
|
|
]
|
|
flags = Dict(flags)
|
|
aliases = Dict(aliases)
|
|
|
|
subcommands = dict(
|
|
list=(NbserverListApp, NbserverListApp.description.splitlines()[0]),
|
|
stop=(NbserverStopApp, NbserverStopApp.description.splitlines()[0]),
|
|
password=(NotebookPasswordApp, NotebookPasswordApp.description.splitlines()[0]),
|
|
)
|
|
|
|
_log_formatter_cls = LogFormatter
|
|
|
|
@default('log_level')
|
|
def _default_log_level(self):
|
|
return logging.INFO
|
|
|
|
@default('log_datefmt')
|
|
def _default_log_datefmt(self):
|
|
"""Exclude date from default date format"""
|
|
return "%H:%M:%S"
|
|
|
|
@default('log_format')
|
|
def _default_log_format(self):
|
|
"""override default log format to include time"""
|
|
return u"%(color)s[%(levelname)1.1s %(asctime)s.%(msecs).03d %(name)s]%(end_color)s %(message)s"
|
|
|
|
ignore_minified_js = Bool(False,
|
|
config=True,
|
|
help=_('Deprecated: Use minified JS file or not, mainly use during dev to avoid JS recompilation'),
|
|
)
|
|
|
|
# file to be opened in the notebook server
|
|
file_to_run = Unicode('', config=True)
|
|
|
|
# Network related information
|
|
|
|
allow_origin = Unicode('', config=True,
|
|
help="""Set the Access-Control-Allow-Origin header
|
|
|
|
Use '*' to allow any origin to access your server.
|
|
|
|
Takes precedence over allow_origin_pat.
|
|
"""
|
|
)
|
|
|
|
allow_origin_pat = Unicode('', config=True,
|
|
help="""Use a regular expression for the Access-Control-Allow-Origin header
|
|
|
|
Requests from an origin matching the expression will get replies with:
|
|
|
|
Access-Control-Allow-Origin: origin
|
|
|
|
where `origin` is the origin of the request.
|
|
|
|
Ignored if allow_origin is set.
|
|
"""
|
|
)
|
|
|
|
allow_credentials = Bool(False, config=True,
|
|
help=_("Set the Access-Control-Allow-Credentials: true header")
|
|
)
|
|
|
|
allow_root = Bool(False, config=True,
|
|
help=_("Whether to allow the user to run the notebook as root.")
|
|
)
|
|
|
|
use_redirect_file = Bool(True, config=True,
|
|
help="""Disable launching browser by redirect file
|
|
|
|
For versions of notebook > 5.7.2, a security feature measure was added that
|
|
prevented the authentication token used to launch the browser from being visible.
|
|
This feature makes it difficult for other users on a multi-user system from
|
|
running code in your Jupyter session as you.
|
|
|
|
However, some environments (like Windows Subsystem for Linux (WSL) and Chromebooks),
|
|
launching a browser using a redirect file can lead the browser failing to load.
|
|
This is because of the difference in file structures/paths between the runtime and
|
|
the browser.
|
|
|
|
Disabling this setting to False will disable this behavior, allowing the browser
|
|
to launch by using a URL and visible token (as before).
|
|
"""
|
|
)
|
|
|
|
default_url = Unicode('/tree', config=True,
|
|
help=_("The default URL to redirect to from `/`")
|
|
)
|
|
|
|
ip = Unicode('localhost', config=True,
|
|
help=_("The IP address the notebook server will listen on.")
|
|
)
|
|
|
|
@default('ip')
|
|
def _default_ip(self):
|
|
"""Return localhost if available, 127.0.0.1 otherwise.
|
|
|
|
On some (horribly broken) systems, localhost cannot be bound.
|
|
"""
|
|
s = socket.socket()
|
|
try:
|
|
s.bind(('localhost', 0))
|
|
except socket.error as e:
|
|
self.log.warning(_("Cannot bind to localhost, using 127.0.0.1 as default ip\n%s"), e)
|
|
return '127.0.0.1'
|
|
else:
|
|
s.close()
|
|
return 'localhost'
|
|
|
|
@validate('ip')
|
|
def _valdate_ip(self, proposal):
|
|
value = proposal['value']
|
|
if value == u'*':
|
|
value = u''
|
|
return value
|
|
|
|
custom_display_url = Unicode(u'', config=True,
|
|
help=_("""Override URL shown to users.
|
|
|
|
Replace actual URL, including protocol, address, port and base URL,
|
|
with the given value when displaying URL to the users. Do not change
|
|
the actual connection URL. If authentication token is enabled, the
|
|
token is added to the custom URL automatically.
|
|
|
|
This option is intended to be used when the URL to display to the user
|
|
cannot be determined reliably by the Jupyter notebook server (proxified
|
|
or containerized setups for example).""")
|
|
)
|
|
|
|
port = Integer(8888, config=True,
|
|
help=_("The port the notebook server will listen on.")
|
|
)
|
|
|
|
port_retries = Integer(50, config=True,
|
|
help=_("The number of additional ports to try if the specified port is not available.")
|
|
)
|
|
|
|
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.""")
|
|
)
|
|
|
|
client_ca = Unicode(u'', config=True,
|
|
help=_("""The full path to a certificate authority certificate for SSL/TLS client authentication.""")
|
|
)
|
|
|
|
cookie_secret_file = Unicode(config=True,
|
|
help=_("""The file where the cookie secret is stored.""")
|
|
)
|
|
|
|
@default('cookie_secret_file')
|
|
def _default_cookie_secret_file(self):
|
|
return os.path.join(self.runtime_dir, 'notebook_cookie_secret')
|
|
|
|
cookie_secret = Bytes(b'', config=True,
|
|
help="""The random bytes used to secure cookies.
|
|
By default this is a new random number every time you start the Notebook.
|
|
Set it to a value in a config file to enable logins to persist across server sessions.
|
|
|
|
Note: Cookie secrets should be kept private, do not share config files with
|
|
cookie_secret stored in plaintext (you can read the value from a file).
|
|
"""
|
|
)
|
|
|
|
@default('cookie_secret')
|
|
def _default_cookie_secret(self):
|
|
if os.path.exists(self.cookie_secret_file):
|
|
with io.open(self.cookie_secret_file, 'rb') as f:
|
|
key = f.read()
|
|
else:
|
|
key = encodebytes(os.urandom(32))
|
|
self._write_cookie_secret_file(key)
|
|
h = hmac.new(key, digestmod=hashlib.sha256)
|
|
h.update(self.password.encode())
|
|
return h.digest()
|
|
|
|
def _write_cookie_secret_file(self, secret):
|
|
"""write my secret to my secret_file"""
|
|
self.log.info(_("Writing notebook server cookie secret to %s"), self.cookie_secret_file)
|
|
try:
|
|
with io.open(self.cookie_secret_file, 'wb') as f:
|
|
f.write(secret)
|
|
except OSError as e:
|
|
self.log.error(_("Failed to write cookie secret to %s: %s"),
|
|
self.cookie_secret_file, e)
|
|
try:
|
|
os.chmod(self.cookie_secret_file, 0o600)
|
|
except OSError:
|
|
self.log.warning(
|
|
_("Could not set permissions on %s"),
|
|
self.cookie_secret_file
|
|
)
|
|
|
|
token = Unicode('<generated>',
|
|
help=_("""Token used for authenticating first-time connections to the server.
|
|
|
|
When no password is enabled,
|
|
the default is to generate a new, random token.
|
|
|
|
Setting to an empty string disables authentication altogether, which is NOT RECOMMENDED.
|
|
""")
|
|
).tag(config=True)
|
|
|
|
_token_generated = True
|
|
|
|
@default('token')
|
|
def _token_default(self):
|
|
if os.getenv('JUPYTER_TOKEN'):
|
|
self._token_generated = False
|
|
return os.getenv('JUPYTER_TOKEN')
|
|
if self.password:
|
|
# no token if password is enabled
|
|
self._token_generated = False
|
|
return u''
|
|
else:
|
|
self._token_generated = True
|
|
return binascii.hexlify(os.urandom(24)).decode('ascii')
|
|
|
|
max_body_size = Integer(512 * 1024 * 1024, config=True,
|
|
help="""
|
|
Sets the maximum allowed size of the client request body, specified in
|
|
the Content-Length request header field. If the size in a request
|
|
exceeds the configured value, a malformed HTTP message is returned to
|
|
the client.
|
|
|
|
Note: max_body_size is applied even in streaming mode.
|
|
"""
|
|
)
|
|
|
|
max_buffer_size = Integer(512 * 1024 * 1024, config=True,
|
|
help="""
|
|
Gets or sets the maximum amount of memory, in bytes, that is allocated
|
|
for use by the buffer manager.
|
|
"""
|
|
)
|
|
|
|
min_open_files_limit = Integer(config=True,
|
|
help="""
|
|
Gets or sets a lower bound on the open file handles process resource
|
|
limit. This may need to be increased if you run into an
|
|
OSError: [Errno 24] Too many open files.
|
|
This is not applicable when running on Windows.
|
|
""")
|
|
|
|
@default('min_open_files_limit')
|
|
def _default_min_open_files_limit(self):
|
|
if resource is None:
|
|
# Ignoring min_open_files_limit because the limit cannot be adjusted (for example, on Windows)
|
|
return None
|
|
|
|
soft, hard = resource.getrlimit(resource.RLIMIT_NOFILE)
|
|
|
|
DEFAULT_SOFT = 4096
|
|
if hard >= DEFAULT_SOFT:
|
|
return DEFAULT_SOFT
|
|
|
|
self.log.debug("Default value for min_open_files_limit is ignored (hard=%r, soft=%r)", hard, soft)
|
|
|
|
return soft
|
|
|
|
@observe('token')
|
|
def _token_changed(self, change):
|
|
self._token_generated = False
|
|
|
|
password = Unicode(u'', config=True,
|
|
help="""Hashed password to use for web authentication.
|
|
|
|
To generate, type in a python/IPython shell:
|
|
|
|
from notebook.auth import passwd; passwd()
|
|
|
|
The string should be of the form type:salt:hashed-password.
|
|
"""
|
|
)
|
|
|
|
password_required = Bool(False, config=True,
|
|
help="""Forces users to use a password for the Notebook server.
|
|
This is useful in a multi user environment, for instance when
|
|
everybody in the LAN can access each other's machine through ssh.
|
|
|
|
In such a case, server the notebook server on localhost is not secure
|
|
since any user can connect to the notebook server via ssh.
|
|
|
|
"""
|
|
)
|
|
|
|
allow_password_change = Bool(True, config=True,
|
|
help="""Allow password to be changed at login for the notebook server.
|
|
|
|
While loggin in with a token, the notebook server UI will give the opportunity to
|
|
the user to enter a new password at the same time that will replace
|
|
the token login mechanism.
|
|
|
|
This can be set to false to prevent changing password from the UI/API.
|
|
"""
|
|
)
|
|
|
|
|
|
disable_check_xsrf = Bool(False, config=True,
|
|
help="""Disable cross-site-request-forgery protection
|
|
|
|
Jupyter notebook 4.3.1 introduces protection from cross-site request forgeries,
|
|
requiring API requests to either:
|
|
|
|
- originate from pages served by this server (validated with XSRF cookie and token), or
|
|
- authenticate with a token
|
|
|
|
Some anonymous compute resources still desire the ability to run code,
|
|
completely without authentication.
|
|
These services can disable all authentication and security checks,
|
|
with the full knowledge of what that implies.
|
|
"""
|
|
)
|
|
|
|
allow_remote_access = Bool(config=True,
|
|
help="""Allow requests where the Host header doesn't point to a local server
|
|
|
|
By default, requests get a 403 forbidden response if the 'Host' header
|
|
shows that the browser thinks it's on a non-local domain.
|
|
Setting this option to True disables this check.
|
|
|
|
This protects against 'DNS rebinding' attacks, where a remote web server
|
|
serves you a page and then changes its DNS to send later requests to a
|
|
local IP, bypassing same-origin checks.
|
|
|
|
Local IP addresses (such as 127.0.0.1 and ::1) are allowed as local,
|
|
along with hostnames configured in local_hostnames.
|
|
""")
|
|
|
|
@default('allow_remote_access')
|
|
def _default_allow_remote(self):
|
|
"""Disallow remote access if we're listening only on loopback addresses"""
|
|
|
|
# if blank, self.ip was configured to "*" meaning bind to all interfaces,
|
|
# see _valdate_ip
|
|
if self.ip == "":
|
|
return True
|
|
|
|
try:
|
|
addr = ipaddress.ip_address(self.ip)
|
|
except ValueError:
|
|
# Address is a hostname
|
|
for info in socket.getaddrinfo(self.ip, self.port, 0, socket.SOCK_STREAM):
|
|
addr = info[4][0]
|
|
if not py3compat.PY3:
|
|
addr = addr.decode('ascii')
|
|
|
|
try:
|
|
parsed = ipaddress.ip_address(addr.split('%')[0])
|
|
except ValueError:
|
|
self.log.warning("Unrecognised IP address: %r", addr)
|
|
continue
|
|
|
|
# Macs map localhost to 'fe80::1%lo0', a link local address
|
|
# scoped to the loopback interface. For now, we'll assume that
|
|
# any scoped link-local address is effectively local.
|
|
if not (parsed.is_loopback
|
|
or (('%' in addr) and parsed.is_link_local)):
|
|
return True
|
|
return False
|
|
else:
|
|
return not addr.is_loopback
|
|
|
|
local_hostnames = List(Unicode(), ['localhost'], config=True,
|
|
help="""Hostnames to allow as local when allow_remote_access is False.
|
|
|
|
Local IP addresses (such as 127.0.0.1 and ::1) are automatically accepted
|
|
as local as well.
|
|
"""
|
|
)
|
|
|
|
open_browser = Bool(True, config=True,
|
|
help="""Whether to open in a browser after starting.
|
|
The specific browser used is platform dependent and
|
|
determined by the python standard library `webbrowser`
|
|
module, unless it is overridden using the --browser
|
|
(NotebookApp.browser) configuration option.
|
|
""")
|
|
|
|
browser = Unicode(u'', config=True,
|
|
help="""Specify what command to use to invoke a web
|
|
browser when opening the notebook. If not specified, the
|
|
default browser will be determined by the `webbrowser`
|
|
standard library module, which allows setting of the
|
|
BROWSER environment variable to override it.
|
|
""")
|
|
|
|
webbrowser_open_new = Integer(2, config=True,
|
|
help=_("""Specify Where to open the notebook on startup. This is the
|
|
`new` argument passed to the standard library method `webbrowser.open`.
|
|
The behaviour is not guaranteed, but depends on browser support. Valid
|
|
values are:
|
|
|
|
- 2 opens a new tab,
|
|
- 1 opens a new window,
|
|
- 0 opens in an existing window.
|
|
|
|
See the `webbrowser.open` documentation for details.
|
|
"""))
|
|
|
|
webapp_settings = Dict(config=True,
|
|
help=_("DEPRECATED, use tornado_settings")
|
|
)
|
|
|
|
@observe('webapp_settings')
|
|
def _update_webapp_settings(self, change):
|
|
self.log.warning(_("\n webapp_settings is deprecated, use tornado_settings.\n"))
|
|
self.tornado_settings = change['new']
|
|
|
|
tornado_settings = Dict(config=True,
|
|
help=_("Supply overrides for the tornado.web.Application that the "
|
|
"Jupyter notebook uses."))
|
|
|
|
websocket_compression_options = Any(None, config=True,
|
|
help=_("""
|
|
Set the tornado compression options for websocket connections.
|
|
|
|
This value will be returned from :meth:`WebSocketHandler.get_compression_options`.
|
|
None (default) will disable compression.
|
|
A dict (even an empty one) will enable compression.
|
|
|
|
See the tornado docs for WebSocketHandler.get_compression_options for details.
|
|
""")
|
|
)
|
|
terminado_settings = Dict(config=True,
|
|
help=_('Supply overrides for terminado. Currently only supports "shell_command".'))
|
|
|
|
cookie_options = Dict(config=True,
|
|
help=_("Extra keyword arguments to pass to `set_secure_cookie`."
|
|
" See tornado's set_secure_cookie docs for details.")
|
|
)
|
|
get_secure_cookie_kwargs = Dict(config=True,
|
|
help=_("Extra keyword arguments to pass to `get_secure_cookie`."
|
|
" See tornado's get_secure_cookie docs for details.")
|
|
)
|
|
ssl_options = Dict(config=True,
|
|
help=_("""Supply SSL options for the tornado HTTPServer.
|
|
See the tornado docs for details."""))
|
|
|
|
jinja_environment_options = Dict(config=True,
|
|
help=_("Supply extra arguments that will be passed to Jinja environment."))
|
|
|
|
jinja_template_vars = Dict(
|
|
config=True,
|
|
help=_("Extra variables to supply to jinja templates when rendering."),
|
|
)
|
|
|
|
enable_mathjax = Bool(True, config=True,
|
|
help="""Whether to enable MathJax for typesetting math/TeX
|
|
|
|
MathJax is the javascript library Jupyter 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.
|
|
"""
|
|
)
|
|
|
|
@observe('enable_mathjax')
|
|
def _update_enable_mathjax(self, change):
|
|
"""set mathjax url to empty if mathjax is disabled"""
|
|
if not change['new']:
|
|
self.mathjax_url = u''
|
|
|
|
base_url = Unicode('/', config=True,
|
|
help='''The base URL for the notebook server.
|
|
|
|
Leading and trailing slashes can be omitted,
|
|
and will automatically be added.
|
|
''')
|
|
|
|
@validate('base_url')
|
|
def _update_base_url(self, proposal):
|
|
value = proposal['value']
|
|
if not value.startswith('/'):
|
|
value = '/' + value
|
|
if not value.endswith('/'):
|
|
value = value + '/'
|
|
return value
|
|
|
|
base_project_url = Unicode('/', config=True, help=_("""DEPRECATED use base_url"""))
|
|
|
|
@observe('base_project_url')
|
|
def _update_base_project_url(self, change):
|
|
self.log.warning(_("base_project_url is deprecated, use base_url"))
|
|
self.base_url = change['new']
|
|
|
|
extra_static_paths = List(Unicode(), config=True,
|
|
help="""Extra paths to search for serving static files.
|
|
|
|
This allows adding javascript/css to be available from the notebook server machine,
|
|
or overriding individual files in the IPython"""
|
|
)
|
|
|
|
@property
|
|
def static_file_path(self):
|
|
"""return extra paths + the default location"""
|
|
return self.extra_static_paths + [DEFAULT_STATIC_FILES_PATH]
|
|
|
|
static_custom_path = List(Unicode(),
|
|
help=_("""Path to search for custom.js, css""")
|
|
)
|
|
|
|
@default('static_custom_path')
|
|
def _default_static_custom_path(self):
|
|
return [
|
|
os.path.join(d, 'custom') for d in (
|
|
self.config_dir,
|
|
DEFAULT_STATIC_FILES_PATH)
|
|
]
|
|
|
|
extra_template_paths = List(Unicode(), config=True,
|
|
help=_("""Extra paths to search for serving jinja templates.
|
|
|
|
Can be used to override templates from notebook.templates.""")
|
|
)
|
|
|
|
@property
|
|
def template_file_path(self):
|
|
"""return extra paths + the default locations"""
|
|
return self.extra_template_paths + DEFAULT_TEMPLATE_PATH_LIST
|
|
|
|
extra_nbextensions_path = List(Unicode(), config=True,
|
|
help=_("""extra paths to look for Javascript notebook extensions""")
|
|
)
|
|
|
|
extra_services = List(Unicode(), config=True,
|
|
help=_("""handlers that should be loaded at higher priority than the default services""")
|
|
)
|
|
|
|
@property
|
|
def nbextensions_path(self):
|
|
"""The path to look for Javascript notebook extensions"""
|
|
path = self.extra_nbextensions_path + jupyter_path('nbextensions')
|
|
# FIXME: remove IPython nbextensions path after a migration period
|
|
try:
|
|
from IPython.paths import get_ipython_dir
|
|
except ImportError:
|
|
pass
|
|
else:
|
|
path.append(os.path.join(get_ipython_dir(), 'nbextensions'))
|
|
return path
|
|
|
|
websocket_url = Unicode("", config=True,
|
|
help="""The base URL for websockets,
|
|
if it differs from the HTTP server (hint: it almost certainly doesn't).
|
|
|
|
Should be in the form of an HTTP origin: ws[s]://hostname[:port]
|
|
"""
|
|
)
|
|
|
|
mathjax_url = Unicode("", config=True,
|
|
help="""A custom url for MathJax.js.
|
|
Should be in the form of a case-sensitive url to MathJax,
|
|
for example: /static/components/MathJax/MathJax.js
|
|
"""
|
|
)
|
|
|
|
@default('mathjax_url')
|
|
def _default_mathjax_url(self):
|
|
if not self.enable_mathjax:
|
|
return u''
|
|
static_url_prefix = self.tornado_settings.get("static_url_prefix", "static")
|
|
return url_path_join(static_url_prefix, 'components', 'MathJax', 'MathJax.js')
|
|
|
|
@observe('mathjax_url')
|
|
def _update_mathjax_url(self, change):
|
|
new = change['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)
|
|
|
|
mathjax_config = Unicode("TeX-AMS-MML_HTMLorMML-full,Safe", config=True,
|
|
help=_("""The MathJax.js configuration file that is to be used.""")
|
|
)
|
|
|
|
@observe('mathjax_config')
|
|
def _update_mathjax_config(self, change):
|
|
self.log.info(_("Using MathJax configuration file: %s"), change['new'])
|
|
|
|
quit_button = Bool(True, config=True,
|
|
help="""If True, display a button in the dashboard to quit
|
|
(shutdown the notebook server)."""
|
|
)
|
|
|
|
contents_manager_class = Type(
|
|
default_value=LargeFileManager,
|
|
klass=ContentsManager,
|
|
config=True,
|
|
help=_('The notebook manager class to use.')
|
|
)
|
|
|
|
kernel_manager_class = Type(
|
|
default_value=MappingKernelManager,
|
|
config=True,
|
|
help=_('The kernel manager class to use.')
|
|
)
|
|
|
|
session_manager_class = Type(
|
|
default_value=SessionManager,
|
|
config=True,
|
|
help=_('The session manager class to use.')
|
|
)
|
|
|
|
config_manager_class = Type(
|
|
default_value=ConfigManager,
|
|
config = True,
|
|
help=_('The config manager class to use')
|
|
)
|
|
|
|
kernel_spec_manager = Instance(KernelSpecManager, allow_none=True)
|
|
|
|
kernel_spec_manager_class = Type(
|
|
default_value=KernelSpecManager,
|
|
config=True,
|
|
help="""
|
|
The kernel spec manager class to use. Should be a subclass
|
|
of `jupyter_client.kernelspec.KernelSpecManager`.
|
|
|
|
The Api of KernelSpecManager is provisional and might change
|
|
without warning between this version of Jupyter and the next stable one.
|
|
"""
|
|
)
|
|
|
|
login_handler_class = Type(
|
|
default_value=LoginHandler,
|
|
klass=web.RequestHandler,
|
|
config=True,
|
|
help=_('The login handler class to use.'),
|
|
)
|
|
|
|
logout_handler_class = Type(
|
|
default_value=LogoutHandler,
|
|
klass=web.RequestHandler,
|
|
config=True,
|
|
help=_('The logout handler class to use.'),
|
|
)
|
|
|
|
trust_xheaders = Bool(False, config=True,
|
|
help=(_("Whether to trust or not X-Scheme/X-Forwarded-Proto and X-Real-Ip/X-Forwarded-For headers"
|
|
"sent by the upstream reverse proxy. Necessary if the proxy handles SSL"))
|
|
)
|
|
|
|
info_file = Unicode()
|
|
|
|
@default('info_file')
|
|
def _default_info_file(self):
|
|
info_file = "nbserver-%s.json" % os.getpid()
|
|
return os.path.join(self.runtime_dir, info_file)
|
|
|
|
browser_open_file = Unicode()
|
|
|
|
@default('browser_open_file')
|
|
def _default_browser_open_file(self):
|
|
basename = "nbserver-%s-open.html" % os.getpid()
|
|
return os.path.join(self.runtime_dir, basename)
|
|
|
|
pylab = Unicode('disabled', config=True,
|
|
help=_("""
|
|
DISABLED: use %pylab or %matplotlib in the notebook to enable matplotlib.
|
|
""")
|
|
)
|
|
|
|
@observe('pylab')
|
|
def _update_pylab(self, change):
|
|
"""when --pylab is specified, display a warning and exit"""
|
|
if change['new'] != 'warn':
|
|
backend = ' %s' % change['new']
|
|
else:
|
|
backend = ''
|
|
self.log.error(_("Support for specifying --pylab on the command line has been removed."))
|
|
self.log.error(
|
|
_("Please use `%pylab{0}` or `%matplotlib{0}` in the notebook itself.").format(backend)
|
|
)
|
|
self.exit(1)
|
|
|
|
notebook_dir = Unicode(config=True,
|
|
help=_("The directory to use for notebooks and kernels.")
|
|
)
|
|
|
|
@default('notebook_dir')
|
|
def _default_notebook_dir(self):
|
|
if self.file_to_run:
|
|
return os.path.dirname(os.path.abspath(self.file_to_run))
|
|
else:
|
|
return py3compat.getcwd()
|
|
|
|
@validate('notebook_dir')
|
|
def _notebook_dir_validate(self, proposal):
|
|
value = proposal['value']
|
|
# Strip any trailing slashes
|
|
# *except* if it's root
|
|
_, path = os.path.splitdrive(value)
|
|
if path == os.sep:
|
|
return value
|
|
value = value.rstrip(os.sep)
|
|
if not os.path.isabs(value):
|
|
# If we receive a non-absolute path, make it absolute.
|
|
value = os.path.abspath(value)
|
|
if not os.path.isdir(value):
|
|
raise TraitError(trans.gettext("No such notebook dir: '%r'") % value)
|
|
return value
|
|
|
|
# TODO: Remove me in notebook 5.0
|
|
server_extensions = List(Unicode(), config=True,
|
|
help=(_("DEPRECATED use the nbserver_extensions dict instead"))
|
|
)
|
|
|
|
@observe('server_extensions')
|
|
def _update_server_extensions(self, change):
|
|
self.log.warning(_("server_extensions is deprecated, use nbserver_extensions"))
|
|
self.server_extensions = change['new']
|
|
|
|
nbserver_extensions = Dict({}, config=True,
|
|
help=(_("Dict of Python modules to load as notebook server extensions."
|
|
"Entry values can be used to enable and disable the loading of"
|
|
"the extensions. The extensions will be loaded in alphabetical "
|
|
"order."))
|
|
)
|
|
|
|
reraise_server_extension_failures = Bool(
|
|
False,
|
|
config=True,
|
|
help=_("Reraise exceptions encountered loading server extensions?"),
|
|
)
|
|
|
|
iopub_msg_rate_limit = Float(1000, config=True, help=_("""(msgs/sec)
|
|
Maximum rate at which messages can be sent on iopub before they are
|
|
limited."""))
|
|
|
|
iopub_data_rate_limit = Float(1000000, config=True, help=_("""(bytes/sec)
|
|
Maximum rate at which stream output can be sent on iopub before they are
|
|
limited."""))
|
|
|
|
rate_limit_window = Float(3, config=True, help=_("""(sec) Time window used to
|
|
check the message and data rate limits."""))
|
|
|
|
shutdown_no_activity_timeout = Integer(0, config=True,
|
|
help=("Shut down the server after N seconds with no kernels or "
|
|
"terminals running and no activity. "
|
|
"This can be used together with culling idle kernels "
|
|
"(MappingKernelManager.cull_idle_timeout) to "
|
|
"shutdown the notebook server when it's not in use. This is not "
|
|
"precisely timed: it may shut down up to a minute later. "
|
|
"0 (the default) disables this automatic shutdown.")
|
|
)
|
|
|
|
terminals_enabled = Bool(True, config=True,
|
|
help=_("""Set to False to disable terminals.
|
|
|
|
This does *not* make the notebook server more secure by itself.
|
|
Anything the user can in a terminal, they can also do in a notebook.
|
|
|
|
Terminals may also be automatically disabled if the terminado package
|
|
is not available.
|
|
"""))
|
|
|
|
def parse_command_line(self, argv=None):
|
|
super(NotebookApp, self).parse_command_line(argv)
|
|
|
|
if self.extra_args:
|
|
arg0 = self.extra_args[0]
|
|
f = os.path.abspath(arg0)
|
|
self.argv.remove(arg0)
|
|
if not os.path.exists(f):
|
|
self.log.critical(_("No such file or directory: %s"), f)
|
|
self.exit(1)
|
|
|
|
# Use config here, to ensure that it takes higher priority than
|
|
# anything that comes from the config dirs.
|
|
c = Config()
|
|
if os.path.isdir(f):
|
|
c.NotebookApp.notebook_dir = f
|
|
elif os.path.isfile(f):
|
|
c.NotebookApp.file_to_run = f
|
|
self.update_config(c)
|
|
|
|
def init_configurables(self):
|
|
|
|
# If gateway server is configured, replace appropriate managers to perform redirection. To make
|
|
# this determination, instantiate the GatewayClient config singleton.
|
|
self.gateway_config = GatewayClient.instance(parent=self)
|
|
|
|
if self.gateway_config.gateway_enabled:
|
|
self.kernel_manager_class = 'notebook.gateway.managers.GatewayKernelManager'
|
|
self.session_manager_class = 'notebook.gateway.managers.GatewaySessionManager'
|
|
self.kernel_spec_manager_class = 'notebook.gateway.managers.GatewayKernelSpecManager'
|
|
|
|
self.kernel_spec_manager = self.kernel_spec_manager_class(
|
|
parent=self,
|
|
)
|
|
self.kernel_manager = self.kernel_manager_class(
|
|
parent=self,
|
|
log=self.log,
|
|
connection_dir=self.runtime_dir,
|
|
kernel_spec_manager=self.kernel_spec_manager,
|
|
)
|
|
self.contents_manager = self.contents_manager_class(
|
|
parent=self,
|
|
log=self.log,
|
|
)
|
|
self.session_manager = self.session_manager_class(
|
|
parent=self,
|
|
log=self.log,
|
|
kernel_manager=self.kernel_manager,
|
|
contents_manager=self.contents_manager,
|
|
)
|
|
self.config_manager = self.config_manager_class(
|
|
parent=self,
|
|
log=self.log,
|
|
)
|
|
|
|
def init_logging(self):
|
|
# This prevents double log messages because tornado use a root logger that
|
|
# self.log is a child of. The logging module dispatches log messages to a log
|
|
# and all of its ancenstors until propagate is set to False.
|
|
self.log.propagate = False
|
|
|
|
for log in app_log, access_log, gen_log:
|
|
# consistent log output name (NotebookApp instead of tornado.access, etc.)
|
|
log.name = self.log.name
|
|
# hook up tornado 3's loggers to our app handlers
|
|
logger = logging.getLogger('tornado')
|
|
logger.propagate = True
|
|
logger.parent = self.log
|
|
logger.setLevel(self.log.level)
|
|
|
|
def init_resources(self):
|
|
"""initialize system resources"""
|
|
if resource is None:
|
|
self.log.debug('Ignoring min_open_files_limit because the limit cannot be adjusted (for example, on Windows)')
|
|
return
|
|
|
|
old_soft, old_hard = resource.getrlimit(resource.RLIMIT_NOFILE)
|
|
soft = self.min_open_files_limit
|
|
hard = old_hard
|
|
if old_soft < soft:
|
|
if hard < soft:
|
|
hard = soft
|
|
self.log.debug(
|
|
'Raising open file limit: soft {}->{}; hard {}->{}'.format(old_soft, soft, old_hard, hard)
|
|
)
|
|
resource.setrlimit(resource.RLIMIT_NOFILE, (soft, hard))
|
|
|
|
def init_webapp(self):
|
|
"""initialize tornado webapp and httpserver"""
|
|
self.tornado_settings['allow_origin'] = self.allow_origin
|
|
self.tornado_settings['websocket_compression_options'] = self.websocket_compression_options
|
|
if self.allow_origin_pat:
|
|
self.tornado_settings['allow_origin_pat'] = re.compile(self.allow_origin_pat)
|
|
self.tornado_settings['allow_credentials'] = self.allow_credentials
|
|
self.tornado_settings['cookie_options'] = self.cookie_options
|
|
self.tornado_settings['get_secure_cookie_kwargs'] = self.get_secure_cookie_kwargs
|
|
self.tornado_settings['token'] = self.token
|
|
|
|
# ensure default_url starts with base_url
|
|
if not self.default_url.startswith(self.base_url):
|
|
self.default_url = url_path_join(self.base_url, self.default_url)
|
|
|
|
if self.password_required and (not self.password):
|
|
self.log.critical(_("Notebook servers are configured to only be run with a password."))
|
|
self.log.critical(_("Hint: run the following command to set a password"))
|
|
self.log.critical(_("\t$ python -m notebook.auth password"))
|
|
sys.exit(1)
|
|
|
|
self.web_app = NotebookWebApplication(
|
|
self, self.kernel_manager, self.contents_manager,
|
|
self.session_manager, self.kernel_spec_manager,
|
|
self.config_manager, self.extra_services,
|
|
self.log, self.base_url, self.default_url, self.tornado_settings,
|
|
self.jinja_environment_options,
|
|
)
|
|
ssl_options = self.ssl_options
|
|
if self.certfile:
|
|
ssl_options['certfile'] = self.certfile
|
|
if self.keyfile:
|
|
ssl_options['keyfile'] = self.keyfile
|
|
if self.client_ca:
|
|
ssl_options['ca_certs'] = self.client_ca
|
|
if not ssl_options:
|
|
# None indicates no SSL config
|
|
ssl_options = None
|
|
else:
|
|
# SSL may be missing, so only import it if it's to be used
|
|
import ssl
|
|
# PROTOCOL_TLS selects the highest ssl/tls protocol version that both the client and
|
|
# server support. When PROTOCOL_TLS is not available use PROTOCOL_SSLv23.
|
|
# PROTOCOL_TLS is new in version 2.7.13, 3.5.3 and 3.6
|
|
ssl_options.setdefault(
|
|
'ssl_version',
|
|
getattr(ssl, 'PROTOCOL_TLS', ssl.PROTOCOL_SSLv23)
|
|
)
|
|
if ssl_options.get('ca_certs', False):
|
|
ssl_options.setdefault('cert_reqs', ssl.CERT_REQUIRED)
|
|
|
|
self.login_handler_class.validate_security(self, ssl_options=ssl_options)
|
|
self.http_server = httpserver.HTTPServer(self.web_app, ssl_options=ssl_options,
|
|
xheaders=self.trust_xheaders,
|
|
max_body_size=self.max_body_size,
|
|
max_buffer_size=self.max_buffer_size)
|
|
|
|
success = None
|
|
for port in random_ports(self.port, self.port_retries+1):
|
|
try:
|
|
self.http_server.listen(port, self.ip)
|
|
except socket.error as e:
|
|
if e.errno == errno.EADDRINUSE:
|
|
if self.port_retries:
|
|
self.log.info(_('The port %i is already in use, trying another port.') % port)
|
|
else:
|
|
self.log.info(_('The port %i is already in use.') % port)
|
|
continue
|
|
elif e.errno in (errno.EACCES, getattr(errno, 'WSAEACCES', errno.EACCES)):
|
|
self.log.warning(_("Permission to listen on port %i denied.") % port)
|
|
continue
|
|
else:
|
|
raise
|
|
else:
|
|
self.port = port
|
|
success = True
|
|
break
|
|
if not success:
|
|
if self.port_retries:
|
|
self.log.critical(_('ERROR: the notebook server could not be started because '
|
|
'no available port could be found.'))
|
|
else:
|
|
self.log.critical(_('ERROR: the notebook server could not be started because '
|
|
'port %i is not available.') % port)
|
|
self.exit(1)
|
|
|
|
@property
|
|
def display_url(self):
|
|
if self.custom_display_url:
|
|
url = self.custom_display_url
|
|
if not url.endswith('/'):
|
|
url += '/'
|
|
else:
|
|
if self.ip in ('', '0.0.0.0'):
|
|
ip = "%s" % socket.gethostname()
|
|
else:
|
|
ip = self.ip
|
|
url = self._url(ip)
|
|
if self.token:
|
|
# Don't log full token if it came from config
|
|
token = self.token if self._token_generated else '...'
|
|
url = (url_concat(url, {'token': token})
|
|
+ '\n or '
|
|
+ url_concat(self._url('127.0.0.1'), {'token': token}))
|
|
return url
|
|
|
|
@property
|
|
def connection_url(self):
|
|
ip = self.ip if self.ip else 'localhost'
|
|
return self._url(ip)
|
|
|
|
def _url(self, ip):
|
|
proto = 'https' if self.certfile else 'http'
|
|
return "%s://%s:%i%s" % (proto, ip, self.port, self.base_url)
|
|
|
|
def init_terminals(self):
|
|
if not self.terminals_enabled:
|
|
return
|
|
|
|
try:
|
|
from .terminal import initialize
|
|
initialize(self.web_app, self.notebook_dir, self.connection_url, self.terminado_settings)
|
|
self.web_app.settings['terminals_available'] = True
|
|
except ImportError as e:
|
|
self.log.warning(_("Terminals not available (error was %s)"), e)
|
|
|
|
def init_signal(self):
|
|
if not sys.platform.startswith('win') and sys.stdin and sys.stdin.isatty():
|
|
signal.signal(signal.SIGINT, self._handle_sigint)
|
|
signal.signal(signal.SIGTERM, self._signal_stop)
|
|
if hasattr(signal, 'SIGUSR1'):
|
|
# Windows doesn't support SIGUSR1
|
|
signal.signal(signal.SIGUSR1, self._signal_info)
|
|
if hasattr(signal, 'SIGINFO'):
|
|
# only on BSD-based systems
|
|
signal.signal(signal.SIGINFO, self._signal_info)
|
|
|
|
def _handle_sigint(self, sig, frame):
|
|
"""SIGINT handler spawns confirmation dialog"""
|
|
# register more forceful signal handler for ^C^C case
|
|
signal.signal(signal.SIGINT, self._signal_stop)
|
|
# request confirmation dialog in bg thread, to avoid
|
|
# blocking the App
|
|
thread = threading.Thread(target=self._confirm_exit)
|
|
thread.daemon = True
|
|
thread.start()
|
|
|
|
def _restore_sigint_handler(self):
|
|
"""callback for restoring original SIGINT handler"""
|
|
signal.signal(signal.SIGINT, self._handle_sigint)
|
|
|
|
def _confirm_exit(self):
|
|
"""confirm shutdown on ^C
|
|
|
|
A second ^C, or answering 'y' within 5s will cause shutdown,
|
|
otherwise original SIGINT handler will be restored.
|
|
|
|
This doesn't work on Windows.
|
|
"""
|
|
info = self.log.info
|
|
info(_('interrupted'))
|
|
print(self.notebook_info())
|
|
yes = _('y')
|
|
no = _('n')
|
|
sys.stdout.write(_("Shutdown this notebook server (%s/[%s])? ") % (yes, no))
|
|
sys.stdout.flush()
|
|
r,w,x = select.select([sys.stdin], [], [], 5)
|
|
if r:
|
|
line = sys.stdin.readline()
|
|
if line.lower().startswith(yes) and no not in line.lower():
|
|
self.log.critical(_("Shutdown confirmed"))
|
|
# schedule stop on the main thread,
|
|
# since this might be called from a signal handler
|
|
self.io_loop.add_callback_from_signal(self.io_loop.stop)
|
|
return
|
|
else:
|
|
print(_("No answer for 5s:"), end=' ')
|
|
print(_("resuming operation..."))
|
|
# no answer, or answer is no:
|
|
# set it back to original SIGINT handler
|
|
# use IOLoop.add_callback because signal.signal must be called
|
|
# from main thread
|
|
self.io_loop.add_callback_from_signal(self._restore_sigint_handler)
|
|
|
|
def _signal_stop(self, sig, frame):
|
|
self.log.critical(_("received signal %s, stopping"), sig)
|
|
self.io_loop.add_callback_from_signal(self.io_loop.stop)
|
|
|
|
def _signal_info(self, sig, frame):
|
|
print(self.notebook_info())
|
|
|
|
def init_components(self):
|
|
"""Check the components submodule, and warn if it's unclean"""
|
|
# TODO: this should still check, but now we use bower, not git submodule
|
|
pass
|
|
|
|
def init_server_extension_config(self):
|
|
"""Consolidate server extensions specified by all configs.
|
|
|
|
The resulting list is stored on self.nbserver_extensions and updates config object.
|
|
|
|
The extension API is experimental, and may change in future releases.
|
|
"""
|
|
# TODO: Remove me in notebook 5.0
|
|
for modulename in self.server_extensions:
|
|
# Don't override disable state of the extension if it already exist
|
|
# in the new traitlet
|
|
if not modulename in self.nbserver_extensions:
|
|
self.nbserver_extensions[modulename] = True
|
|
|
|
# Load server extensions with ConfigManager.
|
|
# This enables merging on keys, which we want for extension enabling.
|
|
# Regular config loading only merges at the class level,
|
|
# so each level (user > env > system) clobbers the previous.
|
|
config_path = jupyter_config_path()
|
|
if self.config_dir not in config_path:
|
|
# add self.config_dir to the front, if set manually
|
|
config_path.insert(0, self.config_dir)
|
|
manager = ConfigManager(read_config_path=config_path)
|
|
section = manager.get(self.config_file_name)
|
|
extensions = section.get('NotebookApp', {}).get('nbserver_extensions', {})
|
|
|
|
for modulename, enabled in sorted(extensions.items()):
|
|
if modulename not in self.nbserver_extensions:
|
|
self.config.NotebookApp.nbserver_extensions.update({modulename: enabled})
|
|
self.nbserver_extensions.update({modulename: enabled})
|
|
|
|
def init_server_extensions(self):
|
|
"""Load any extensions specified by config.
|
|
|
|
Import the module, then call the load_jupyter_server_extension function,
|
|
if one exists.
|
|
|
|
The extension API is experimental, and may change in future releases.
|
|
"""
|
|
|
|
|
|
for modulename, enabled in sorted(self.nbserver_extensions.items()):
|
|
if enabled:
|
|
try:
|
|
mod = importlib.import_module(modulename)
|
|
func = getattr(mod, 'load_jupyter_server_extension', None)
|
|
if func is not None:
|
|
func(self)
|
|
except Exception:
|
|
if self.reraise_server_extension_failures:
|
|
raise
|
|
self.log.warning(_("Error loading server extension %s"), modulename,
|
|
exc_info=True)
|
|
|
|
def init_mime_overrides(self):
|
|
# On some Windows machines, an application has registered incorrect
|
|
# mimetypes in the registry.
|
|
# Tornado uses this when serving .css and .js files, causing browsers to
|
|
# reject these files. We know the mimetype always needs to be text/css for css
|
|
# and application/javascript for JS, so we override it here
|
|
# and explicitly tell the mimetypes to not trust the Windows registry
|
|
if os.name == 'nt':
|
|
# do not trust windows registry, which regularly has bad info
|
|
mimetypes.init(files=[])
|
|
# ensure css, js are correct, which are required for pages to function
|
|
mimetypes.add_type('text/css', '.css')
|
|
mimetypes.add_type('application/javascript', '.js')
|
|
|
|
|
|
def shutdown_no_activity(self):
|
|
"""Shutdown server on timeout when there are no kernels or terminals."""
|
|
km = self.kernel_manager
|
|
if len(km) != 0:
|
|
return # Kernels still running
|
|
|
|
try:
|
|
term_mgr = self.web_app.settings['terminal_manager']
|
|
except KeyError:
|
|
pass # Terminals not enabled
|
|
else:
|
|
if term_mgr.terminals:
|
|
return # Terminals still running
|
|
|
|
seconds_since_active = \
|
|
(utcnow() - self.web_app.last_activity()).total_seconds()
|
|
self.log.debug("No activity for %d seconds.",
|
|
seconds_since_active)
|
|
if seconds_since_active > self.shutdown_no_activity_timeout:
|
|
self.log.info("No kernels or terminals for %d seconds; shutting down.",
|
|
seconds_since_active)
|
|
self.stop()
|
|
|
|
def init_shutdown_no_activity(self):
|
|
if self.shutdown_no_activity_timeout > 0:
|
|
self.log.info("Will shut down after %d seconds with no kernels or terminals.",
|
|
self.shutdown_no_activity_timeout)
|
|
pc = ioloop.PeriodicCallback(self.shutdown_no_activity, 60000)
|
|
pc.start()
|
|
|
|
def _init_asyncio_patch(self):
|
|
"""set default asyncio policy to be compatible with tornado
|
|
|
|
Tornado 6 (at least) is not compatible with the default
|
|
asyncio implementation on Windows
|
|
|
|
Pick the older SelectorEventLoopPolicy on Windows
|
|
if the known-incompatible default policy is in use.
|
|
|
|
do this as early as possible to make it a low priority and overrideable
|
|
|
|
ref: https://github.com/tornadoweb/tornado/issues/2608
|
|
|
|
FIXME: if/when tornado supports the defaults in asyncio,
|
|
remove and bump tornado requirement for py38
|
|
"""
|
|
if sys.platform.startswith("win") and sys.version_info >= (3, 8):
|
|
import asyncio
|
|
try:
|
|
from asyncio import (
|
|
WindowsProactorEventLoopPolicy,
|
|
WindowsSelectorEventLoopPolicy,
|
|
)
|
|
except ImportError:
|
|
pass
|
|
# not affected
|
|
else:
|
|
if type(asyncio.get_event_loop_policy()) is WindowsProactorEventLoopPolicy:
|
|
# WindowsProactorEventLoopPolicy is not compatible with tornado 6
|
|
# fallback to the pre-3.8 default of Selector
|
|
asyncio.set_event_loop_policy(WindowsSelectorEventLoopPolicy())
|
|
|
|
@catch_config_error
|
|
def initialize(self, argv=None):
|
|
self._init_asyncio_patch()
|
|
|
|
super(NotebookApp, self).initialize(argv)
|
|
self.init_logging()
|
|
if self._dispatching:
|
|
return
|
|
self.init_resources()
|
|
self.init_configurables()
|
|
self.init_server_extension_config()
|
|
self.init_components()
|
|
self.init_webapp()
|
|
self.init_terminals()
|
|
self.init_signal()
|
|
self.init_server_extensions()
|
|
self.init_mime_overrides()
|
|
self.init_shutdown_no_activity()
|
|
|
|
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.
|
|
"""
|
|
n_kernels = len(self.kernel_manager.list_kernel_ids())
|
|
kernel_msg = trans.ngettext('Shutting down %d kernel', 'Shutting down %d kernels', n_kernels)
|
|
self.log.info(kernel_msg % n_kernels)
|
|
self.kernel_manager.shutdown_all()
|
|
|
|
def notebook_info(self, kernel_count=True):
|
|
"Return the current working directory and the server url information"
|
|
info = self.contents_manager.info_string() + "\n"
|
|
if kernel_count:
|
|
n_kernels = len(self.kernel_manager.list_kernel_ids())
|
|
kernel_msg = trans.ngettext("%d active kernel", "%d active kernels", n_kernels)
|
|
info += kernel_msg % n_kernels
|
|
info += "\n"
|
|
# Format the info so that the URL fits on a single line in 80 char display
|
|
info += _("The Jupyter Notebook is running at:\n%s") % self.display_url
|
|
if self.gateway_config.gateway_enabled:
|
|
info += _("\nKernels will be managed by the Gateway server running at:\n%s") % self.gateway_config.url
|
|
return info
|
|
|
|
def server_info(self):
|
|
"""Return a JSONable dict of information about this server."""
|
|
return {'url': self.connection_url,
|
|
'hostname': self.ip if self.ip else 'localhost',
|
|
'port': self.port,
|
|
'secure': bool(self.certfile),
|
|
'base_url': self.base_url,
|
|
'token': self.token,
|
|
'notebook_dir': os.path.abspath(self.notebook_dir),
|
|
'password': bool(self.password),
|
|
'pid': os.getpid(),
|
|
}
|
|
|
|
def write_server_info_file(self):
|
|
"""Write the result of server_info() to the JSON file info_file."""
|
|
try:
|
|
with open(self.info_file, 'w') as f:
|
|
json.dump(self.server_info(), f, indent=2, sort_keys=True)
|
|
except OSError as e:
|
|
self.log.error(_("Failed to write server-info to %s: %s"),
|
|
self.info_file, e)
|
|
|
|
def remove_server_info_file(self):
|
|
"""Remove the nbserver-<pid>.json file created for this server.
|
|
|
|
Ignores the error raised when the file has already been removed.
|
|
"""
|
|
try:
|
|
os.unlink(self.info_file)
|
|
except OSError as e:
|
|
if e.errno != errno.ENOENT:
|
|
raise
|
|
|
|
def write_browser_open_file(self):
|
|
"""Write an nbserver-<pid>-open.html file
|
|
|
|
This can be used to open the notebook in a browser
|
|
"""
|
|
# default_url contains base_url, but so does connection_url
|
|
open_url = self.default_url[len(self.base_url):]
|
|
|
|
with open(self.browser_open_file, 'w', encoding='utf-8') as f:
|
|
self._write_browser_open_file(open_url, f)
|
|
|
|
def _write_browser_open_file(self, url, fh):
|
|
if self.token:
|
|
url = url_concat(url, {'token': self.token})
|
|
url = url_path_join(self.connection_url, url)
|
|
|
|
jinja2_env = self.web_app.settings['jinja2_env']
|
|
template = jinja2_env.get_template('browser-open.html')
|
|
fh.write(template.render(open_url=url))
|
|
|
|
def remove_browser_open_file(self):
|
|
"""Remove the nbserver-<pid>-open.html file created for this server.
|
|
|
|
Ignores the error raised when the file has already been removed.
|
|
"""
|
|
try:
|
|
os.unlink(self.browser_open_file)
|
|
except OSError as e:
|
|
if e.errno != errno.ENOENT:
|
|
raise
|
|
|
|
def launch_browser(self):
|
|
try:
|
|
browser = webbrowser.get(self.browser or None)
|
|
except webbrowser.Error as e:
|
|
self.log.warning(_('No web browser found: %s.') % e)
|
|
browser = None
|
|
|
|
if not browser:
|
|
return
|
|
|
|
if not self.use_redirect_file:
|
|
uri = self.default_url[len(self.base_url):]
|
|
|
|
if self.token:
|
|
uri = url_concat(uri, {'token': self.token})
|
|
|
|
if self.file_to_run:
|
|
if not os.path.exists(self.file_to_run):
|
|
self.log.critical(_("%s does not exist") % self.file_to_run)
|
|
self.exit(1)
|
|
|
|
relpath = os.path.relpath(self.file_to_run, self.notebook_dir)
|
|
uri = url_escape(url_path_join('notebooks', *relpath.split(os.sep)))
|
|
|
|
# Write a temporary file to open in the browser
|
|
fd, open_file = tempfile.mkstemp(suffix='.html')
|
|
with open(fd, 'w', encoding='utf-8') as fh:
|
|
self._write_browser_open_file(uri, fh)
|
|
else:
|
|
open_file = self.browser_open_file
|
|
|
|
if self.use_redirect_file:
|
|
assembled_url = urljoin('file:', pathname2url(open_file))
|
|
else:
|
|
assembled_url = url_path_join(self.connection_url, uri)
|
|
|
|
b = lambda: browser.open(assembled_url, new=self.webbrowser_open_new)
|
|
threading.Thread(target=b).start()
|
|
|
|
def start(self):
|
|
""" Start the Notebook server app, after initialization
|
|
|
|
This method takes no arguments so all configuration and initialization
|
|
must be done prior to calling this method."""
|
|
|
|
super(NotebookApp, self).start()
|
|
|
|
if not self.allow_root:
|
|
# check if we are running as root, and abort if it's not allowed
|
|
try:
|
|
uid = os.geteuid()
|
|
except AttributeError:
|
|
uid = -1 # anything nonzero here, since we can't check UID assume non-root
|
|
if uid == 0:
|
|
self.log.critical(_("Running as root is not recommended. Use --allow-root to bypass."))
|
|
self.exit(1)
|
|
|
|
info = self.log.info
|
|
for line in self.notebook_info(kernel_count=False).split("\n"):
|
|
info(line)
|
|
info(_("Use Control-C to stop this server and shut down all kernels (twice to skip confirmation)."))
|
|
if 'dev' in notebook.__version__:
|
|
info(_("Welcome to Project Jupyter! Explore the various tools available"
|
|
" and their corresponding documentation. If you are interested"
|
|
" in contributing to the platform, please visit the community"
|
|
"resources section at https://jupyter.org/community.html."))
|
|
|
|
self.write_server_info_file()
|
|
self.write_browser_open_file()
|
|
|
|
if self.open_browser or self.file_to_run:
|
|
self.launch_browser()
|
|
|
|
if self.token and self._token_generated:
|
|
# log full URL with generated token, so there's a copy/pasteable link
|
|
# with auth info.
|
|
self.log.critical('\n'.join([
|
|
'\n',
|
|
'To access the notebook, open this file in a browser:',
|
|
' %s' % urljoin('file:', pathname2url(self.browser_open_file)),
|
|
'Or copy and paste one of these URLs:',
|
|
' %s' % self.display_url,
|
|
]))
|
|
|
|
self.io_loop = ioloop.IOLoop.current()
|
|
if sys.platform.startswith('win'):
|
|
# add no-op to wake every 5s
|
|
# to handle signals that may be ignored by the inner loop
|
|
pc = ioloop.PeriodicCallback(lambda : None, 5000)
|
|
pc.start()
|
|
try:
|
|
self.io_loop.start()
|
|
except KeyboardInterrupt:
|
|
info(_("Interrupted..."))
|
|
finally:
|
|
self.remove_server_info_file()
|
|
self.remove_browser_open_file()
|
|
self.cleanup_kernels()
|
|
|
|
def stop(self):
|
|
def _stop():
|
|
self.http_server.stop()
|
|
self.io_loop.stop()
|
|
self.io_loop.add_callback(_stop)
|
|
|
|
|
|
def list_running_servers(runtime_dir=None):
|
|
"""Iterate over the server info files of running notebook servers.
|
|
|
|
Given a runtime directory, find nbserver-* files in the security directory,
|
|
and yield dicts of their information, each one pertaining to
|
|
a currently running notebook server instance.
|
|
"""
|
|
if runtime_dir is None:
|
|
runtime_dir = jupyter_runtime_dir()
|
|
|
|
# The runtime dir might not exist
|
|
if not os.path.isdir(runtime_dir):
|
|
return
|
|
|
|
for file_name in os.listdir(runtime_dir):
|
|
if re.match('nbserver-(.+).json', file_name):
|
|
with io.open(os.path.join(runtime_dir, file_name), encoding='utf-8') as f:
|
|
info = json.load(f)
|
|
|
|
# Simple check whether that process is really still running
|
|
# Also remove leftover files from IPython 2.x without a pid field
|
|
if ('pid' in info) and check_pid(info['pid']):
|
|
yield info
|
|
else:
|
|
# If the process has died, try to delete its info file
|
|
try:
|
|
os.unlink(os.path.join(runtime_dir, file_name))
|
|
except OSError:
|
|
pass # TODO: This should warn or log or something
|
|
#-----------------------------------------------------------------------------
|
|
# Main entry point
|
|
#-----------------------------------------------------------------------------
|
|
|
|
main = launch_new_instance = NotebookApp.launch_instance
|