bokeh.server.server

Provide basic Bokeh server objects that use a Tornado HTTPServer and BokeTornado Tornado Application to service Bokeh Server Applications. There are two public classes in this module:

BaseServer
This is a lightweight class to explicitly coordinate the components needed to run a Bokeh server (A BokehTornado instance, and Tornado HTTPServer and a Tornado IOLoop)
Server
This higher-level convenience class only needs to be configured with Bokeh Application instances, and will automatically create and coordinate the lower level Tornado components.
class bokeh.server.server.BaseServer(io_loop, tornado_app, http_server)

Explicitly coordinate the level Tornado components required to run a Bokeh server:

  • A Tornado IOLoop to run the Bokeh server machinery.
  • a BokehTornado Tornado application that defines the Bokeh server machinery.
  • a Tornado HTTPServer to direct HTTP requests

All three of these components must be passed to BaseServer, which will initialize the BokehTornado instance on the io_loop. The http_server must have been previously created and initialized with the BokehTornado instance.

get_session(app_path, session_id)

Get an active a session by name application path and session ID.

Parameters:
  • app_path (str) – The configured application path for the application to return a session for.
  • session_id (str) – The session ID of the session to retrieve.
Returns:

ServerSession

get_sessions(app_path=None)

Gets all currently active sessions for applications.

Parameters:app_path (str, optional) – The configured application path for the application to return sessions for. If None, return active sessions for all applications. (default: None)
Returns:list[ServerSession]
run_until_shutdown()

Run the Bokeh Server until shutdown is requested by the user, either via a Keyboard interrupt (Ctrl-C) or SIGTERM.

Calling this method will start the Tornado IOLoop and block all execution in the calling process.

Returns:None
show(app_path, browser=None, new='tab')

Opens an app in a browser window or tab.

This method is useful for testing or running Bokeh server applications on a local machine but should not call when running Bokeh server for an actual deployment.

Parameters:
  • app_path (str) – the app path to open The part of the URL after the hostname:port, with leading slash.
  • browser (str, optional) – browser to show with (default: None) For systems that support it, the browser argument allows specifying which browser to display in, e.g. “safari”, “firefox”, “opera”, “windows-default” (see the webbrowser module documentation in the standard lib for more details).
  • new (str, optional) – window or tab (default: “tab”) If new is ‘tab’, then opens a new tab. If new is ‘window’, then opens a new window.
Returns:

None

start()

Install the Bokeh Server and its background tasks on a Tornado IOLoop.

This method does not block and does not affect the state of the Tornado IOLoop You must start and stop the loop yourself, i.e. this method is typically useful when you are already explicitly managing an IOLoop yourself.

To start a Bokeh server and immediately “run forever” in a blocking manner, see run_until_shutdown().

stop(wait=True)

Stop the Bokeh Server.

This stops and removes all Bokeh Server IOLoop callbacks, as well as stops the HTTPServer that this instance was configured with.

Parameters:fast (bool) – Whether to wait for orderly cleanup (default: True)
Returns:None
unlisten()

Stop listening on ports. The server will no longer be usable after calling this function.

Returns:None
io_loop

The Tornado IOLoop that this Bokeh Server is running on.

class bokeh.server.server.Server(applications, io_loop=None, http_server_kwargs=None, **kwargs)

A high level convenience class to run a Bokeh server.

This class can automatically coordinate the three the base level components required to run a Bokeh server:

  • A Tornado IOLoop to run the Bokeh server machinery.
  • a BokehTornado Tornado application that defines the Bokeh server machinery.
  • a Tornado HTTPServer to direct HTTP requests

This high level Server class has some limitations. In particular, it is not possible to set an explicit io_loop and num_procs other than 1 at the same time. To do that, it is necessary to use BaseServer and coordinate the three components above explicitly.

address

The configured address that the server listens on for HTTP requests.

port

The configured port number that the server listens on for HTTP requests.

prefix

The configured URL prefix to use for all Bokeh server paths.