node-mongo-tenant | tenancy plugin for mongoose with tenant separation | DB Client library

I have a localized maintenance database that will be running on a LAN without internet access. I recently migrated from a SQL database to Mongo based on other requirements i need to meet moving forward and i'm attempting to get my existing functionality back up with the new express/mongo backend rather than the nginx/mariaDB i had been running. Once i get this back up i can move forward with adding the new requirements...

My issue right now is attempting to change the active database in MongoDB (using mongoose) based on a req.param. I can use the params in the actual queries but would like to have a database set for each of the high level hardware sets that need the app.

Example:

http://1.2.3.4/api/HardwareA/tasks to return items from the tasks collection of Hardware A database

http://1.2.3.4/api/HardwareB/tasks to return items from the tasks collection of Hardware B database

I have been trying to play with the useDB() functionality but have been unable to get anything working as stated above. I can get the paths working find by hardcoding the database into mongoose.connection but it's not very dynamic that way.

have the below across a couple different files working fien with hard coded databases and just need to try to figure out how to implement the database change at an early level.

I have the merge params in there because i tried to do the below with req.param.db for loading the databases but on initial build i always get req not defined, which makes sense to me. Just not sure how to go about doing this appropriately. All this express stuff is new to me. I'm certain it's something i am just not seeing.

Thanks for any assistance.

from package.json for version references.