def init_configurables(self): # force Session default to be secure default_secure(self.config) 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.log.info("Serving notebooks from %s", self.notebook_manager.notebook_dir) self.cluster_manager = ClusterManager(config=self.config, log=self.log) self.cluster_manager.update_profiles()
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 = IPythonConsoleApp.classes + [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) # file to be opened in the notebook server file_to_run = Unicode('') # 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." ) 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.""" ) github_user = Unicode(u'', config=True, help="""Github user to use for GIST backend""" ) github_pw = Unicode(u'', config=True, help="""Github password to use for GIST backend""" ) 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. """ ) 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). """ ) def _cookie_secret_default(self): return os.urandom(1024) 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. """) 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.""" ) use_less = Bool(False, config=True, help="""Wether to use Browser Side less-css parsing instead of compiled css version in templates that allows it. This is mainly convenient when working on the less file to avoid a build step, or if user want to overwrite some of the less variables without having to recompile everything. You will need to install the less.js component in the static directory either in the source tree or in your profile folder. """) max_msg_size = Integer(65536, config=True, help=""" The max raw message size accepted from the browser over a WebSocket connection. """) 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""" ) def _extra_static_paths_default(self): return [os.path.join(self.profile_dir.location, 'static')] @property def static_file_path(self): """return extra paths + the default location""" return self.extra_static_paths + [DEFAULT_STATIC_FILES_PATH] 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: if self.certfile: # HTTPS: load from Rackspace CDN, because SSL certificate requires it base = u"https://c328740.ssl.cf1.rackcdn.com" else: base = u"http://cdn.mathjax.org" url = base + u"/mathjax/latest/MathJax.js" self.log.info("Using MathJax from CDN: %s", url) return url 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) if self.extra_args: f = os.path.abspath(self.extra_args[0]) if os.path.isdir(f): nbdir = f else: self.file_to_run = f nbdir = os.path.dirname(f) self.config.NotebookManager.notebook_dir = nbdir def init_configurables(self): # force Session default to be secure default_secure(self.config) 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.log.info("Serving notebooks from %s", self.notebook_manager.notebook_dir) self.cluster_manager = ClusterManager(config=self.config, log=self.log) self.cluster_manager.update_profiles() 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 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.cluster_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.') 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: raise self.log.info('The port %i is already in use, trying another random port.' % port) else: self.port = port success = True break if not success: self.log.critical('ERROR: the notebook server could not be started because ' 'no available port could be found.') self.exit(1) def init_signal(self): # FIXME: remove this check when pyzmq dependency is >= 2.1.11 # safely extract zmq version info: try: zmq_v = zmq.pyzmq_version_info() except AttributeError: zmq_v = [ int(n) for n in re.findall(r'\d+', zmq.__version__) ] if 'dev' in zmq.__version__: zmq_v.append(999) zmq_v = tuple(zmq_v) if zmq_v >= (2,1,9) and not sys.platform.startswith('win'): # This won't work with 2.1.7 and # 2.1.9-10 will log ugly 'Interrupted system call' messages, # but it will work signal.signal(signal.SIGINT, self._handle_sigint) signal.signal(signal.SIGTERM, self._signal_stop) 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) ioloop.IOLoop.instance().stop() return # 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. """ # FIXME: remove this delay when pyzmq dependency is >= 2.1.11 time.sleep(0.1) sys.stdout.write("Shutdown Notebook Server (y/[n])? ") sys.stdout.flush() r,w,x = select.select([sys.stdin], [], [], 5) if r: line = sys.stdin.readline() if line.lower().startswith('y'): self.log.critical("Shutdown confirmed") ioloop.IOLoop.instance().stop() return else: print "No answer for 5s:", 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 ioloop.IOLoop.instance().add_callback(self._restore_sigint_handler) def _signal_stop(self, sig, frame): self.log.critical("received signal %s, stopping", sig) ioloop.IOLoop.instance().stop() @catch_config_error def initialize(self, argv=None): self.init_logging() super(NotebookApp, self).initialize(argv) self.init_configurables() self.init_webapp() self.init_signal() 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 shutdown_kernel deletes keys for kid in list(km.kernel_ids): km.shutdown_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.github_user and self.github_pw: from .gist_backend import gist_hub ghub = gist_hub(self.github_user, self.github_pw) # hack self.notebook_manager.ghub = ghub # initial load self.notebook_manager.refresh_notebooks(skip_github=False) if self.open_browser or self.file_to_run: ip = self.ip or '127.0.0.1' try: browser = webbrowser.get(self.browser or None) except webbrowser.Error as e: self.log.warn('No web browser found: %s.' % e) browser = None if self.file_to_run: filename, _ = os.path.splitext(os.path.basename(self.file_to_run)) for nb in self.notebook_manager.list_notebooks(): if filename == nb['name']: url = nb['notebook_id'] break else: url = '' else: url = '' if browser: b = lambda : browser.open("%s://%s:%i%s%s" % (proto, ip, self.port, self.base_project_url, url), new=2) threading.Thread(target=b).start() try: ioloop.IOLoop.instance().start() except KeyboardInterrupt: info("Interrupted...") finally: self.cleanup_kernels()