Merge pull request #5484 from lucabem/master

Added functionality to allow filter kernels by Jupyter Enterprise Gat…

Author: kevin-bates

notebook/gateway/managers.py

@@ -498,15 +498,25 @@ def shutdown_all(self, now=False):
             self.remove_kernel(kernel_id)
 
 
+
 class GatewayKernelSpecManager(KernelSpecManager):
 
     def __init__(self, **kwargs):
         super(GatewayKernelSpecManager, self).__init__(**kwargs)
-        self.base_endpoint = url_path_join(GatewayClient.instance().url,
-                                           GatewayClient.instance().kernelspecs_endpoint)
+        base_endpoint = url_path_join(GatewayClient.instance().url,
+                                      GatewayClient.instance().kernelspecs_endpoint)
+
+        self.base_endpoint = GatewayKernelSpecManager._get_endpoint_for_user_filter(base_endpoint)
         self.base_resource_endpoint = url_path_join(GatewayClient.instance().url,
                                                     GatewayClient.instance().kernelspecs_resource_endpoint)
 
+    @staticmethod
+    def _get_endpoint_for_user_filter(default_endpoint):
+        kernel_user = os.environ.get('KERNEL_USERNAME')
+        if kernel_user:
+            return '?user='.join([default_endpoint, kernel_user])
+        return default_endpoint
+
     def _get_kernelspecs_endpoint_url(self, kernel_name=None):
         """Builds a url for the kernels endpoint