|
|
"""Tornado handlers for kernel specifications."""
|
|
|
|
|
|
# Copyright (c) IPython 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 IPythonHandler, json_errors
|
|
|
from ...utils import url_path_join
|
|
|
|
|
|
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(IPythonHandler):
|
|
|
SUPPORTED_METHODS = ('GET',)
|
|
|
|
|
|
@web.authenticated
|
|
|
@json_errors
|
|
|
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(IPythonHandler):
|
|
|
SUPPORTED_METHODS = ('GET',)
|
|
|
|
|
|
@web.authenticated
|
|
|
@json_errors
|
|
|
def get(self, kernel_name):
|
|
|
try:
|
|
|
model = kernelspec_model(self, 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),
|
|
|
]
|
|
|
|
