Wrap an arbitrary webapp so it can be used in place of jupyter-singleuser in a JupyterHub setting
Project description
jhsingle-native-proxy
Wrap an arbitrary webapp so it can be used in place of jupyter-singleuser in a JupyterHub setting.
Within JupyterHub this allows similar operation to jupyter-server-proxy except it also removes the Jupyter notebook itself, so is working directly with the arbitrary web service.
This is a very basic alpha version.
Install and Run
Install using pip.
pip install jhsingle-native-proxy
The process to start is specified on the command line, for example a streamlit web app:
jhsingle-native-proxy streamlit hello
By default the jhsingle-native-proxy server will listen on port 8888, forwarding to port 8500.
But you will normally need to tell jhsingle-native-proxy which port the end process will run in, and maybe tell the end process which port you want it to use (which you can do with the substitution variable {port}).
Note the use of -- to signal the end of command line options to jhsingle-native-proxy. Then the third party command line itself can contain options starting with dashes. An alternative is to use the substitution {--}
jhsingle-native-proxy -- streamlit hello --server.port {port} --server.headless True --server.enableCORS False
To run jhsingle-native-proxy itself listening on a different port use:
jhsingle-native-proxy --port 8000 streamlit hello
To run jhsingle-native-proxy on port 8000, and the end process on 8505:
jhsingle-native-proxy --port 8000 --destport 8505 -- streamlit hello --server.port {port} --server.headless True --server.enableCORS False
Use the JUPYTERHUB_SERVICE_PREFIX env var to specify the first part of the URL to listen to (and then strip before forwarding). E.g. JUPYTERHUB_SERVICE_PREFIX=/user/dan will mean requests on http://localhost:8888/user/dan/something will forward to http://localhost:8500/something
You can also specify --ip 0.0.0.0 for the address to listen on.
Below we use the substitution {--} for the command to run, allowing us to specify --ip to jhsingle-native-proxy instead of the command being run.
jhsingle-native-proxy --port 8000 --destport 8505 streamlit hello {--}server.port {port} {--}server.headless True {--}server.enableCORS False --ip 0.0.0.0
Development install
git clone https://github.com/ideonate/jhsingle-native-proxy.git
cd jhsingle-native-proxy
pip install -e .
To run directly in python: python -m jhsingle_native_proxy.main <rest of command line>
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