add controller to demonstrate rename endpoint refactoring

Author: misto

customer-core/src/main/java/com/lakesidemutual/customercore/interfaces/OldCustomerInformationHolder.java

@@ -0,0 +1,39 @@
+package com.lakesidemutual.customercore.interfaces;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.net.URI;
+
+import static org.springframework.hateoas.server.mvc.WebMvcLinkBuilder.linkTo;
+import static org.springframework.hateoas.server.mvc.WebMvcLinkBuilder.methodOn;
+
+/**
+ * This controller demonstrates the use of a 301 Moved Permanently response to redirect requests to a new URI.
+ *
+ * See the <a href="https://interface-refactoring.github.io/refactorings/renameendpoint">Rename Endpoint</a> refactoring for more information.
+ */
+@RestController
+@RequestMapping(path = "getCustomers")
+public class OldCustomerInformationHolder {
+
+    /**
+     * Handles GET requests for customer information.
+     *
+     * @param ids    The customer IDs.
+     * @param fields The fields to be included in the response (optional).
+     * @return A ResponseEntity with a status of 301 Moved Permanently and the location header set to the new URI.
+     */
+    @GetMapping(value = "/{ids}")
+    @ResponseBody
+    public ResponseEntity getCustomer(
+            @PathVariable String ids,
+            @RequestParam(value = "fields", required = false, defaultValue = "") String fields) {
+        URI movedTo = linkTo(methodOn(CustomerInformationHolder.class).getCustomer(ids, fields)).toUri();
+        return ResponseEntity
+                .status(HttpStatus.MOVED_PERMANENTLY)
+                .location(movedTo)
+                .build();
+    }
+}