align examples to mixin

Author: echarles

examples/simple/README.md

@@ -10,8 +10,8 @@ You need `python3` to build and run the server extensions.
 # Clone, create a conda env and install from source.
 git clone https://github.com/jupyter/jupyter_server && \
   cd examples/simple && \
-  conda create -y -n jupyter_server_example python=3.7 && \
-  conda activate jupyter_server_example && \
+  conda create -y -n jupyter-server-example python=3.7 && \
+  conda activate jupyter-server-example && \
   pip install -e .
 ```
 
@@ -154,7 +154,7 @@ Stop any running server and then start the simple-ext11.
 
 ```bash
 jupyter simple-ext11 --hello --simple11-dir any_folder
-# or...
+# TODO FIX the following command, simple11 does not work launching with jpserver_extensions parameter.
 jupyter server --ServerApp.jpserver_extensions="{'simple_ext11': True}" --hello --simple11-dir any_folder
 ```
 

examples/simple/simple_ext1/handlers.py

@@ -1,6 +1,7 @@
-from jupyter_server.extension.handler import ExtensionHandler, ExtensionHandlerJinjaMixin
+from jupyter_server.base.handlers import JupyterHandler
+from jupyter_server.extension.handler import ExtensionHandlerMixin, ExtensionHandlerJinjaMixin
 
-class DefaultHandler(ExtensionHandler):
+class DefaultHandler(ExtensionHandlerMixin, JupyterHandler):
     def get(self):
         # The name of the extension to which this handler is linked.
         self.log.info("Extension Name in {} Default Handler: {}".format(self.extension_name, self.extension_name))
@@ -9,11 +10,11 @@ def get(self):
         self.write('<h1>Hello Simple 1 - I am the default...</h1>')
         self.write('Config in {} Default Handler: {}'.format(self.extension_name, self.config))
 
-class RedirectHandler(ExtensionHandler):
+class RedirectHandler(ExtensionHandlerMixin, JupyterHandler):
     def get(self):
         self.redirect("/static/{}/favicon.ico".format(self.extension_name))
 
-class ParameterHandler(ExtensionHandler):    
+class ParameterHandler(ExtensionHandlerMixin, JupyterHandler):    
     def get(self, matched_part=None, *args, **kwargs):
         var1 = self.get_argument('var1', default=None)
         components = [x for x in self.request.path.split("/") if x]
@@ -22,7 +23,7 @@ def get(self, matched_part=None, *args, **kwargs):
         self.write('<p>var1: {}</p>'.format(var1))
         self.write('<p>components: {}</p>'.format(components))
 
-class BaseTemplateHandler(ExtensionHandlerJinjaMixin, ExtensionHandler): pass
+class BaseTemplateHandler(ExtensionHandlerJinjaMixin, ExtensionHandlerMixin, JupyterHandler): pass
 
 class TypescriptHandler(BaseTemplateHandler):
     def get(self):

examples/simple/simple_ext11/application.py

@@ -61,6 +61,9 @@ def initialize_settings(self):
         self.log.info('ignore_js: {}'.format(self.ignore_js))
         super().initialize_settings()
 
+    def initialize_handlers(self):
+        super().initialize_handlers()
+
 #-----------------------------------------------------------------------------
 # Main entry point
 #-----------------------------------------------------------------------------

examples/simple/simple_ext2/handlers.py

@@ -1,6 +1,7 @@
-from jupyter_server.extension.handler import ExtensionHandler, ExtensionHandlerJinjaMixin
+from jupyter_server.base.handlers import JupyterHandler
+from jupyter_server.extension.handler import ExtensionHandlerMixin, ExtensionHandlerJinjaMixin
 
-class ParameterHandler(ExtensionHandler):
+class ParameterHandler(ExtensionHandlerMixin, JupyterHandler):
     def get(self, matched_part=None, *args, **kwargs):
         var1 = self.get_argument('var1', default=None)
         components = [x for x in self.request.path.split("/") if x]
@@ -9,7 +10,7 @@ def get(self, matched_part=None, *args, **kwargs):
         self.write('<p>var1: {}</p>'.format(var1))
         self.write('<p>components: {}</p>'.format(components))
 
-class BaseTemplateHandler(ExtensionHandlerJinjaMixin, ExtensionHandler): pass
+class BaseTemplateHandler(ExtensionHandlerJinjaMixin, ExtensionHandlerMixin, JupyterHandler): pass
 
 class IndexHandler(BaseTemplateHandler):
     def get(self):