add maintenance entry point

services/src/main/java/org/fao/geonet/api/maintenance/DatadirCleaner.java

@@ -0,0 +1,29 @@
+package org.fao.geonet.api.maintenance;
+
+import io.swagger.v3.oas.annotations.tags.Tag;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.ResponseBody;
+import org.springframework.web.bind.annotation.ResponseStatus;
+
+@RequestMapping(value = {"/{portal}/api/maintenance"})
+@Tag(name = "maintenance")
+@Controller("maintenance")
+public class DatadirCleaner {
+
+    @io.swagger.v3.oas.annotations.Operation(summary = "Clean data dir")
+    @RequestMapping(
+        path = "/cleanDatadir",
+        produces = MediaType.APPLICATION_JSON_VALUE,
+        method = RequestMethod.GET)
+    @ResponseStatus(value = HttpStatus.OK)
+    @PreAuthorize("hasAuthority('UserAdmin')")
+    @ResponseBody
+    public Object cleanDataDir() {
+        return "cleaned";
+    }
+}