97 average number of days db work only

[jbackfieldVA]

Note: Delete the description statements, complete each step. None are optional, but can be justified as to why they cannot be completed as written. Provide known gaps to testing that may raise the risk of merging to production.

Summary

• This work is behind a feature toggle (flipper): No
• This is adding a public endpoint to return the average number of days to claim completion which will be stored in the database.
• VES

Related issue(s)

• [Claims] - Dev: Create Endpoint for Retrieving Average Numbers of Days#97
• Not a bug

Testing done

• New code is covered by unit tests
• Endpoint didn't exist, database table didn't exist
• Access the endpoint (with or without authentication) and receive a value.

What areas of the site does it impact?

No other code was touched in this except the schema file to include the new table creation. This will be used for chatbot to display the average number of days to claim completion.

Acceptance criteria

• I created the database table in a rails migration
• I updated the schema.rb file to include the new table
• Added unprotected endpoint to query the latest value
• We handle if there are no records in the database
• SPEC written and passes.
• No sensitive information (i.e. PII/credentials/internal URLs/etc.) is captured in logging, hardcoded, or specs

Requested Feedback

We are going to be creating a github action to insert records into the new table. This will only run ONCE per week so we are looking at a very small footprint of data in the database. There is a desire to keep the historical records in the database however, there is no discussion of data retention at the moment as the current schedule would mean that we would expect to run for 20 years before we even had 1000 records. If we need an index on the created_at in order to speed up the DB request, we can make that change.