Source code for bokeh.server.views.static_handler

#-----------------------------------------------------------------------------
# Copyright (c) 2012 - 2021, Anaconda, Inc., and Bokeh Contributors.
# All rights reserved.
#
# The full license is in the file LICENSE.txt, distributed with this software.
#-----------------------------------------------------------------------------
''' Provide a request handler that returns a page displaying a document.

'''

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# Boilerplate
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from __future__ import annotations

import logging # isort:skip
log = logging.getLogger(__name__)

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# Imports
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# External imports
from tornado.web import StaticFileHandler

# Bokeh imports
from bokeh.settings import settings

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# Globals and constants
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__all__ = (
    'StaticHandler',
)

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# General API
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# Dev API
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[docs]class StaticHandler(StaticFileHandler): ''' Implements a custom Tornado static file handler for BokehJS JavaScript and CSS resources. ''' def __init__(self, tornado_app, *args, **kw) -> None: kw['path'] = settings.bokehjsdir() # Note: tornado_app is stored as self.application super().__init__(tornado_app, *args, **kw) # We aren't using tornado's built-in static_path function # because it relies on TornadoApplication's autoconfigured # static handler instead of our custom one. We have a # custom one because we think we might want to serve # static files from multiple paths at once in the future. @classmethod def append_version(cls, path: str) -> str: # This version is cached on the StaticFileHandler class, # keyed by absolute filesystem path, and only invalidated # on an explicit StaticFileHandler.reset(). The reset is # automatic on every request if you set static_hash_cache=False # in TornadoApplication kwargs. In dev mode rely on dev tools # to manage caching. This improves the ability to debug code. if settings.dev: return path else: version = StaticFileHandler.get_version(dict(static_path=settings.bokehjsdir()), path) return f"{path}?v={version}"
#----------------------------------------------------------------------------- # Private API #----------------------------------------------------------------------------- #----------------------------------------------------------------------------- # Code #-----------------------------------------------------------------------------