weilu / minidash

A minimal Dash app for testing purposes. app.py source from https://dash.plotly.com/minimal-app

minidash

A minimal Dash app for testing purposes. app.py source from https://dash.plotly.com/minimal-app

Development

First git clone this repo.

Then generate and obtain your access token from databricks following this instruction: https://docs.databricks.com/en/dev-tools/auth/pat.html Get connection details for the SQL Warehouse compute resource which is used for providing the database connection: https://docs.databricks.com/en/integrations/compute-details.html

Export the obtained information to the following environment variables:

export ACCESS_TOKEN="[access token]"
export SERVER_HOSTNAME="[server hostname, e.g. adb-12345678.12.azuredatabricks.net"
export HTTP_PATH="[http path, e.g. /sql/1.0/warehouses/abcdxxx123]"

Then to setup and verify the app works locally:

pip install -r requirements.txt
python app.py
open http://127.0.0.1:8050/

You should see the data app.

Deployment

• Internal Server: https://w0lxdrconn01.worldbank.org
• External Server: https://w0lxdshyprd1c01.worldbank.org

Ensure you have an RStudio Connect account, if not request here. Upon account provisioning, generate API key(s) on the target server's UI.

Check which python version is supported by the server with:

rsconnect content search --server [server URL] --api-key [your API key] | jq -c '.[] | {}' | sort | uniq

As of writing both the internal and external server supports 3.8.14 so that's the version we are going to use for building & deploying the dash app. If you are using pyenv this repo's python version has configured to use 3.8.14. If the target server uses a different version, feel free to switch using pyenv local 3.x.x.

To deploy:

rsconnect deploy dash --server [server URL] --api-key [your API key] ./