Uploaded Test files

venv/Lib/site-packages/notebook/services/kernelspecs/handlers.py

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+"""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, gen
+
+from ...base.handlers import APIHandler
+from ...utils import maybe_future, url_path_join, url_unescape
+
+
+
+def kernelspec_model(handler, name, spec_dict, resource_dir):
+    """Load a KernelSpec by name and return the REST API model"""
+    d = {
+        'name': name,
+        'spec': spec_dict,
+        'resources': {}
+    }
+
+    # Add resource files if they exist
+    resource_dir = resource_dir
+    for resource in ['kernel.js', 'kernel.css']:
+        if os.path.exists(pjoin(resource_dir, resource)):
+            d['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)
+        d['resources'][no_ext] = url_path_join(
+            handler.base_url,
+            'kernelspecs',
+            name,
+            fname
+        )
+    return d
+
+
+def is_kernelspec_model(spec_dict):
+    """Returns True if spec_dict is already in proper form.  This will occur when using a gateway."""
+    return isinstance(spec_dict, dict) and 'name' in spec_dict and 'spec' in spec_dict and 'resources' in spec_dict
+
+
+class MainKernelSpecHandler(APIHandler):
+
+    @web.authenticated
+    @gen.coroutine
+    def get(self):
+        ksm = self.kernel_spec_manager
+        km = self.kernel_manager
+        model = {}
+        model['default'] = km.default_kernel_name
+        model['kernelspecs'] = specs = {}
+        kspecs = yield maybe_future(ksm.get_all_specs())
+        for kernel_name, kernel_info in kspecs.items():
+            try:
+                if is_kernelspec_model(kernel_info):
+                    d = kernel_info
+                else:
+                    d = kernelspec_model(self, kernel_name, kernel_info['spec'], kernel_info['resource_dir'])
+            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
+    @gen.coroutine
+    def get(self, kernel_name):
+        ksm = self.kernel_spec_manager
+        kernel_name = url_unescape(kernel_name)
+        try:
+            spec = yield maybe_future(ksm.get_kernel_spec(kernel_name))
+        except KeyError as e:
+            raise web.HTTPError(404, u'Kernel spec %s not found' % kernel_name) from e
+        if is_kernelspec_model(spec):
+            model = spec
+        else:
+            model = kernelspec_model(self, kernel_name, spec.to_dict(), spec.resource_dir)
+        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),
+]