upstream/ipython Files · IPython/html/kernelspecs/handlers.py

Fix race condition in javascript kernel message processing...

Fix race condition in javascript kernel message processing Because the binary messages are now deserialized using the asynchronous FileReader API, we need to have some way to force the messages to still be processed in the order they are received. This patch implements a simple processing queue using promises.

Thomas Kluyver - - Load All Authors

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             handlers.py
        
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             / IPython / html / kernelspecs / handlers.py
          
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      from tornado import web

      from ..base.handlers import IPythonHandler

      from ..services.kernelspecs.handlers import kernel_name_regex

      class KernelSpecResourceHandler(web.StaticFileHandler, IPythonHandler):

          SUPPORTED_METHODS = ('GET', 'HEAD')

          def initialize(self):

              web.StaticFileHandler.initialize(self, path='')

          @web.authenticated

          def get(self, kernel_name, path, include_body=True):

              ksm = self.kernel_spec_manager

              try:

                  self.root = ksm.get_kernel_spec(kernel_name).resource_dir

              except KeyError:

                  raise web.HTTPError(404, u'Kernel spec %s not found' % kernel_name)

              self.log.debug("Serving kernel resource from: %s", self.root)

              return web.StaticFileHandler.get(self, path, include_body=include_body)

          @web.authenticated

          def head(self, kernel_name, path):

              return self.get(kernel_name, path, include_body=False)

      default_handlers = [

          (r"/kernelspecs/%s/(?P<path>.*)" % kernel_name_regex, KernelSpecResourceHandler),

      ]

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				from tornado import web
				from ..base.handlers import IPythonHandler
				from ..services.kernelspecs.handlers import kernel_name_regex

				class KernelSpecResourceHandler(web.StaticFileHandler, IPythonHandler):
				SUPPORTED_METHODS = ('GET', 'HEAD')

				def initialize(self):
				web.StaticFileHandler.initialize(self, path='')

				@web.authenticated
				def get(self, kernel_name, path, include_body=True):
				ksm = self.kernel_spec_manager
				try:
				self.root = ksm.get_kernel_spec(kernel_name).resource_dir
				except KeyError:
				raise web.HTTPError(404, u'Kernel spec %s not found' % kernel_name)
				self.log.debug("Serving kernel resource from: %s", self.root)
				return web.StaticFileHandler.get(self, path, include_body=include_body)

				@web.authenticated
				def head(self, kernel_name, path):
				return self.get(kernel_name, path, include_body=False)

				default_handlers = [
				(r"/kernelspecs/%s/(?P<path>.*)" % kernel_name_regex, KernelSpecResourceHandler),
				]