Hands-On Microservices with Kotlin

Answering a DELETE request

In our initial definition, we said that if we are going to delete a resource that is not found, we should answer with 404 NOT FOUND, and if we delete it, we should answer a 200 OK, regardless of whether we should need to send a body back to the client.

So, our method will look like this:

@DeleteMapping(value = "/customer/{id}")fun deleteCustomer(@PathVariable id: Int): ResponseEntity<Unit> {  var status = HttpStatus.NOT_FOUND  if (customerService.getCustomer(id) != null) {    customerService.deleteCustomer(id)    status = HttpStatus.OK  }  return ResponseEntity(Unit, status)}

First, we will set that we have not found the customer, and we will check with our service if it actually exists. If so, we delete and set the status ...