This project is an example for Multi Tenancy with ASP.NET Core and PostgreSQL Row Level Security:
A Swagger UI has been added, so you can also use Swagger to run the examples.
We start with inserting customers to the database of Tenant Tenant 1 (33F3857A-D8D7-449E-B71F-B5B960A6D89A):
> curl -H "X-TenantName: 33F3857A-D8D7-449E-B71F-B5B960A6D89A" -H "Content-Type: application/json" -X POST -d "{\"firstName\" : \"Philipp\", \"lastName\" : \"Wagner\"}" http:https://localhost:5000/api/customer
{"id":1,"firstName":"Philipp","lastName":"Wagner"}
> curl -H "X-TenantName: 33F3857A-D8D7-449E-B71F-B5B960A6D89A" -H "Content-Type: application/json" -X POST -d "{\"firstName\" : \"Max\", \"lastName\" : \"Mustermann\"}" http:https://localhost:5000/api/customer
{"id":2,"firstName":"Max","lastName":"Mustermann"}
Getting a list of all customers for Tenant 1 will now return two customers:
> curl -H "X-TenantName: 33F3857A-D8D7-449E-B71F-B5B960A6D89A" -H "Content-Type: application/json" -X GET http:https://localhost:5000/api/customer
[{"id":1,"firstName":"Philipp","lastName":"Wagner"},{"id":2,"firstName":"Max","lastName":"Mustermann"}]
While requesting a list of all customers for Tenant 2 (7344384A-A2F4-4FC4-A382-315FCB421A72) returns an empty list:
> curl -H "X-TenantName: 7344384A-A2F4-4FC4-A382-315FCB421A72" -H "Content-Type: application/json" -X GET http:https://localhost:5000/api/customer
[]
We can now insert a customer for Tenant 2:
> curl -H "X-TenantName: 7344384A-A2F4-4FC4-A382-315FCB421A72" -H "Content-Type: application/json" -X POST -d "{\"firstName\" : \"Hans\", \"lastName\" : \"Wurst\"}" http:https://localhost:5000/api/customer
{"id":3,"firstName":"Hans","lastName":"Wurst"}
Querying the database with Tenant 1 still returns the two customers:
> curl -H "X-TenantName: 33F3857A-D8D7-449E-B71F-B5B960A6D89A" -H "Content-Type: application/json" -X GET http:https://localhost:5000/api/customer
[{"id":1,"firstName":"Philipp","lastName":"Wagner"},{"id":2,"firstName":"Max","lastName":"Mustermann"}]
Querying with Tenant 2 will now return the inserted customer:
> curl -H "X-TenantName: 7344384A-A2F4-4FC4-A382-315FCB421A72" -H "Content-Type: application/json" -X GET http:https://localhost:5000/api/customer
[{"id":3,"firstName":"Hans","lastName":"Wurst"}]
Works!