Integration

Guys,

I have a Proxy service that recieves a file content in Binary64 field present on the request body type.
I need to write this content present inside the Binary 64 to a file.

My approach was to develop a Web Service with that same interface and do the write logic within the Web Service. But my wish is to make this, if possible, using Proxy Service. There is a particular issue about that.

The OSB Domain is started with a user called osboperator and it has all write privileges on the remote file system in order to make possible write down the file. But it may represent a security issue. My client wants that the Proxy Service runs with a different user, impersonating a different user than the one that started the domain because when doing that it will be more secure.

Let me supply more information.
The Proxy Service is configured to respond only to HTTPS requests and there is a 2-WAY SSL configured. So the requester will present a certificate and based on the certificate there will be a user associated with that. This user associated with the certificate is the one meant to run the part of the orchestration that will tryies to write down the file on the remote file system.

Iss it possible?
How?
Is it the best approach?