Khisha Joytu

My client uses Hashicorp vault. Basically every database in the system has login credentials. What hashicorp does is peridically rotates or changes db login password for database server. DocuWare intakes that DB/ server login credentials at the very beginning during installation and as per my understanding it remains unchanged. 
As my client is required to continuously rotate password for all database including MSSQL for docuware for security concern and standards, we are to implement a third party software that requests latest login credentials to hasicorp vault through their API and update the DB login credential periodically. They also want it on zero downtime meaning the server can not remain down at all. So help me figure out how to approach this problem. My major inquiries-

1. Does Docuware have API (rest or other) through which I can update MSSQL DB login credentials for docuware?
2. Does Docuware have API (rest or other) through which I can stop and start all docuware services?
3. If Docuware does not have this I am open to writing script that changes config / data files but not sure which files need changing.
4. If Docuware does not have API to manually start stop docuware services I am open to writing script to restart docuware services from windows services too.

Any help is appreciated.