Warn about 'service_url' option during config transformation

src/ejabberd_config_transformer.erl

@@ -398,6 +398,15 @@ transform_module(_Host, mod_http_api, Opts, Acc) ->
 		      true
 	      end, Opts),
     {{mod_http_api, Opts1}, Acc};
+transform_module(_Host, mod_http_upload, Opts, Acc) ->
+    Opts1 = lists:filter(
+	      fun({service_url, _}) ->
+		      warn_deprecated_option(service_url, external_secret),
+		      true;
+		 (_) ->
+		      true
+	      end, Opts),
+    {{mod_http_upload, Opts1}, Acc};
 transform_module(_Host, Mod, Opts, Acc) ->
     {{Mod, Opts}, Acc}.
 

src/mod_http_upload.erl

@@ -174,13 +174,7 @@ mod_opt_type(put_url) ->
 mod_opt_type(get_url) ->
     econf:url();
 mod_opt_type(service_url) ->
-    econf:and_then(
-      econf:url(),
-      fun(URL) ->
-	      ?WARNING_MSG("Option 'service_url' is deprecated, consider using "
-			   "the 'external_secret' interface instead", []),
-	      URL
-      end);
+    econf:url();
 mod_opt_type(custom_headers) ->
     econf:map(econf:binary(), econf:binary());
 mod_opt_type(rm_on_unregister) ->
@@ -203,8 +197,7 @@ mod_opt_type(host) ->
 mod_opt_type(hosts) ->
     econf:well_known(hosts, ?MODULE).
 
--spec mod_options(binary()) -> [{service_url, binary()} |
-				{thumbnail, boolean()} |
+-spec mod_options(binary()) -> [{thumbnail, boolean()} |
 				{atom(), any()}].
 mod_options(Host) ->
     [{host, <<"upload.", Host/binary>>},

src/mod_http_upload_opt.erl

@@ -111,7 +111,7 @@ secret_length(Opts) when is_map(Opts) ->
 secret_length(Host) ->
     gen_mod:get_module_opt(Host, mod_http_upload, secret_length).
 
--spec service_url(gen_mod:opts() | global | binary()) -> binary().
+-spec service_url(gen_mod:opts() | global | binary()) -> 'undefined' | binary().
 service_url(Opts) when is_map(Opts) ->
     gen_mod:get_opt(service_url, Opts);
 service_url(Host) ->