/usr/lib/python2.7/dist-packages/notebook/services/kernelspecs/handlers.py is in python-notebook 5.2.2-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 | """Tornado handlers for kernel specifications.
Preliminary documentation at https://github.com/ipython/ipython/wiki/IPEP-25%3A-Registry-of-installed-kernels#rest-api
"""
# Copyright (c) Jupyter Development Team.
# Distributed under the terms of the Modified BSD License.
import glob
import json
import os
pjoin = os.path.join
from tornado import web
from ...base.handlers import APIHandler
from ...utils import url_path_join, url_unescape
def kernelspec_model(handler, name):
"""Load a KernelSpec by name and return the REST API model"""
ksm = handler.kernel_spec_manager
spec = ksm.get_kernel_spec(name)
d = {'name': name}
d['spec'] = spec.to_dict()
d['resources'] = resources = {}
resource_dir = spec.resource_dir
for resource in ['kernel.js', 'kernel.css']:
if os.path.exists(pjoin(resource_dir, resource)):
resources[resource] = url_path_join(
handler.base_url,
'kernelspecs',
name,
resource
)
for logo_file in glob.glob(pjoin(resource_dir, 'logo-*')):
fname = os.path.basename(logo_file)
no_ext, _ = os.path.splitext(fname)
resources[no_ext] = url_path_join(
handler.base_url,
'kernelspecs',
name,
fname
)
return d
class MainKernelSpecHandler(APIHandler):
@web.authenticated
def get(self):
ksm = self.kernel_spec_manager
km = self.kernel_manager
model = {}
model['default'] = km.default_kernel_name
model['kernelspecs'] = specs = {}
for kernel_name in ksm.find_kernel_specs():
try:
d = kernelspec_model(self, kernel_name)
except Exception:
self.log.error("Failed to load kernel spec: '%s'", kernel_name, exc_info=True)
continue
specs[kernel_name] = d
self.set_header("Content-Type", 'application/json')
self.finish(json.dumps(model))
class KernelSpecHandler(APIHandler):
@web.authenticated
def get(self, kernel_name):
try:
model = kernelspec_model(self, url_unescape(kernel_name))
except KeyError:
raise web.HTTPError(404, u'Kernel spec %s not found' % kernel_name)
self.set_header("Content-Type", 'application/json')
self.finish(json.dumps(model))
# URL to handler mappings
kernel_name_regex = r"(?P<kernel_name>[\w\.\-%]+)"
default_handlers = [
(r"/api/kernelspecs", MainKernelSpecHandler),
(r"/api/kernelspecs/%s" % kernel_name_regex, KernelSpecHandler),
]
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