notebookapp.py
131 lines
| 4.9 KiB
| text/x-python
|
PythonLexer
Brian E. Granger
|
r4339 | import logging | ||
import os | ||||
import zmq | ||||
# Install the pyzmq ioloop. This has to be done before anything else from | ||||
# tornado is imported. | ||||
from zmq.eventloop import ioloop | ||||
import tornado.ioloop | ||||
tornado.ioloop = ioloop | ||||
from tornado import httpserver | ||||
from tornado import options | ||||
from tornado import web | ||||
from kernelmanager import KernelManager | ||||
Brian E. Granger
|
r4340 | from handlers import ( | ||
MainHandler, KernelHandler, KernelActionHandler, ZMQStreamHandler, | ||||
NotebookRootHandler, NotebookHandler | ||||
) | ||||
from routers import IOPubStreamRouter, ShellStreamRouter | ||||
Brian E. Granger
|
r4339 | |||
options.define("port", default=8888, help="run on the given port", type=int) | ||||
_kernel_id_regex = r"(?P<kernel_id>\w+-\w+-\w+-\w+-\w+)" | ||||
_kernel_action_regex = r"(?P<action>restart|interrupt)" | ||||
Brian E. Granger
|
r4342 | class NotebookWebApplication(web.Application): | ||
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r4339 | |||
def __init__(self): | ||||
handlers = [ | ||||
(r"/", MainHandler), | ||||
(r"/kernels", KernelHandler), | ||||
(r"/kernels/%s/%s" % (_kernel_id_regex, _kernel_action_regex), KernelActionHandler), | ||||
(r"/kernels/%s/iopub" % _kernel_id_regex, ZMQStreamHandler, dict(stream_name='iopub')), | ||||
(r"/kernels/%s/shell" % _kernel_id_regex, ZMQStreamHandler, dict(stream_name='shell')), | ||||
(r"/notebooks", NotebookRootHandler), | ||||
(r"/notebooks/([^/]+)", NotebookHandler) | ||||
] | ||||
settings = dict( | ||||
template_path=os.path.join(os.path.dirname(__file__), "templates"), | ||||
static_path=os.path.join(os.path.dirname(__file__), "static"), | ||||
) | ||||
web.Application.__init__(self, handlers, **settings) | ||||
self.context = zmq.Context() | ||||
self.kernel_manager = KernelManager(self.context) | ||||
self._session_dict = {} | ||||
self._routers = {} | ||||
#------------------------------------------------------------------------- | ||||
# Methods for managing kernels and sessions | ||||
#------------------------------------------------------------------------- | ||||
@property | ||||
def kernel_ids(self): | ||||
return self.kernel_manager.kernel_ids | ||||
def start_kernel(self): | ||||
kernel_id = self.kernel_manager.start_kernel() | ||||
logging.info("Kernel started: %s" % kernel_id) | ||||
self.start_session(kernel_id) | ||||
return kernel_id | ||||
def interrupt_kernel(self, kernel_id): | ||||
self.kernel_manager.interrupt_kernel(kernel_id) | ||||
logging.info("Kernel interrupted: %s" % kernel_id) | ||||
def restart_kernel(self, kernel_id): | ||||
# Create the new kernel first so we can move the clients over. | ||||
new_kernel_id = self.start_kernel() | ||||
# Copy the clients over to the new routers. | ||||
old_iopub_router = self.get_router(kernel_id, 'iopub') | ||||
old_shell_router = self.get_router(kernel_id, 'shell') | ||||
new_iopub_router = self.get_router(new_kernel_id, 'iopub') | ||||
new_shell_router = self.get_router(new_kernel_id, 'shell') | ||||
new_iopub_router.copy_clients(old_iopub_router) | ||||
new_shell_router.copy_clients(old_shell_router) | ||||
# Now shutdown the old session and the kernel. | ||||
# TODO: This causes a hard crash in ZMQStream.close, which sets | ||||
# self.socket to None to hastily. We will need to fix this in PyZMQ | ||||
# itself. For now, we just leave the old kernel running :( | ||||
# sm = self.kernel_manager.get_session_manager(kernel_id) | ||||
# session_id = self._session_dict[kernel_id] | ||||
# sm.stop_session(session_id) | ||||
# self.kernel_manager.kill_kernel(kernel_id) | ||||
logging.info("Kernel restarted") | ||||
return new_kernel_id | ||||
def start_session(self, kernel_id): | ||||
sm = self.kernel_manager.get_session_manager(kernel_id) | ||||
session_id = sm.start_session() | ||||
self._session_dict[kernel_id] = session_id | ||||
iopub_stream = sm.get_iopub_stream(session_id) | ||||
shell_stream = sm.get_shell_stream(session_id) | ||||
iopub_router = IOPubStreamRouter(iopub_stream) | ||||
shell_router = ShellStreamRouter(shell_stream) | ||||
self._routers[(kernel_id, session_id, 'iopub')] = iopub_router | ||||
self._routers[(kernel_id, session_id, 'shell')] = shell_router | ||||
logging.info("Session started: %s, %s" % (kernel_id, session_id)) | ||||
def stop_session(self, kernel_id): | ||||
# TODO: finish this! | ||||
sm = self.kernel_manager.get_session_manager(kernel_id) | ||||
session_id = self._session_dict[kernel_id] | ||||
def get_router(self, kernel_id, stream_name): | ||||
session_id = self._session_dict[kernel_id] | ||||
router = self._routers[(kernel_id, session_id, stream_name)] | ||||
return router | ||||
Brian E. Granger
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r4341 | def launch_new_instance(): | ||
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r4339 | options.parse_command_line() | ||
Brian E. Granger
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r4342 | application = NotebookWebApplication() | ||
Brian E. Granger
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r4339 | http_server = httpserver.HTTPServer(application) | ||
http_server.listen(options.options.port) | ||||
print "IPython Notebook running at: http://127.0.0.1:8888" | ||||
print "The github master of tornado is required to run this server:" | ||||
print " https://github.com/facebook/tornado/tree/master/tornado" | ||||
ioloop.IOLoop.instance().start() | ||||
if __name__ == "__main__": | ||||
main() | ||||