mgr/dashboard: Edit user via UI throwing multiple server errors

Fixes: https://tracker.ceph.com/issues/73637

Commit includes:
Returning the default user ratelimit when the ratelimit for user is not set, hence eliminating the 500 error on UI

Signed-off-by: Naman Munet <[email protected]>

Author: Naman Munet

src/pybind/mgr/dashboard/frontend/src/app/ceph/rgw/rgw-user-form/rgw-user-form.component.ts

@@ -207,7 +207,6 @@ export class RgwUserFormComponent extends CdForm implements OnInit {
       const observables = [];
       observables.push(this.rgwUserService.get(uid));
       observables.push(this.rgwUserService.getQuota(uid));
-      observables.push(this.rgwUserService.getUserRateLimit(uid));
       observableForkJoin(observables).subscribe(
         (resp: any[]) => {
           // Get the default values.

src/pybind/mgr/dashboard/services/rgw_client.py

@@ -47,6 +47,15 @@
 _SYNC_GROUP_ID = 'dashboard_admin_group'
 _SYNC_FLOW_ID = 'dashboard_admin_flow'
 _SYNC_PIPE_ID = 'dashboard_admin_pipe'
+DEFAULT_USER_RATELIMIT = {
+    "user_ratelimit": {
+        "max_read_ops": 0,
+        "max_write_ops": 0,
+        "max_read_bytes": 0,
+        "max_write_bytes": 0,
+        "enabled": False
+    }
+}
 
 
 class NoRgwDaemonsException(Exception):
@@ -1717,6 +1726,8 @@ def get_rateLimit(self, scope: str, name: str):
         try:
             exit_code, out, err = mgr.send_rgwadmin_command(rate_limit_cmd)
             if exit_code > 0:
+                if "No such file or directory" in str(err):
+                    return DEFAULT_USER_RATELIMIT
                 raise DashboardException(f'Unable to get rate limit: {err}',
                                          http_status_code=500, component='rgw')
             return out