Commits on Nov 27, 2024

1. Add support for viewer-based credentials for Databricks & Cortex. …

   This commit brings support for Posit Connect's "viewer-based
   credentials" feature [0] to the Databricks and Cortex chatbots. Similar
   to the recent work in `odbc` [1], the way this is exposed to R users is
   to require them to pass a Shiny session argument to `chat_databricks()`
   or `chat_cortex()`.
   
   Checks for viewer-based credentials are designed to fall back gracefully
   to existing authentication methods. This is intended to allow users to
   -- for example -- develop and test a Shiny app that uses Databricks or
   Snowflake credentials in desktop Positron/RStudio or Posit Workbench and
   deploy it with no code changes to Connect.
   
   Most of the actual work is outsourced to a new shared package,
   `connectcreds` [2].
   
   Note that this commit also brings the internal auth handling for
   Snowflake much closer to Databricks, notably by making
   `cortex_credentials()` internal and analogous to `databricks_token()`.
   
   Unit tests are included.
   
   [0]: https://docs.posit.co/connect/user/oauth-integrations/
   [1]: r-dbi/odbc#853
   [2]: https://github.com/posit-dev/connectcreds/
   
   Signed-off-by: Aaron Jacobs <[email protected]>

   

   atheriel committed Nov 27, 2024
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