chore: bump version && update changes

apps/emqx_retainer/src/emqx_retainer.app.src

@@ -2,7 +2,7 @@
 {application, emqx_retainer, [
     {description, "EMQX Retainer"},
     % strict semver, bump manually!
-    {vsn, "5.0.19"},
+    {vsn, "5.0.20"},
     {modules, []},
     {registered, [emqx_retainer_sup]},
     {applications, [kernel, stdlib, emqx, emqx_ctl]},

apps/emqx_retainer/src/emqx_retainer_api.erl

@@ -181,7 +181,6 @@ lookup_retained(get, #{query_string := Qs}) ->
     Page = maps:get(<<"page">>, Qs, 1),
     Limit = maps:get(<<"limit">>, Qs, emqx_mgmt:default_row_limit()),
     Topic = maps:get(<<"topic">>, Qs, undefined),
-    ct:print("Qs:~p~n", [Qs]),
     {ok, Msgs} = emqx_retainer_mnesia:page_read(undefined, Topic, Page, Limit),
     {200, #{
         data => [format_message(Msg) || Msg <- Msgs],

changes/ce/feat-12272.en.md

@@ -0,0 +1,3 @@
+Added a new endpoint `DELETE /retainer/messages` to `retain` API to clean all retained messages
+
+Also added an optional topic filter in the query string for the endpoint "GET /retainer/messages", e.g. "topic=t/1".

rel/i18n/emqx_retainer_api.hocon

@@ -33,7 +33,7 @@ delete_messages.label:
 """Delete Retained Messages"""
 
 lookup_api.desc:
-"""Lookup a message by a topic without wildcards, ."""
+"""Lookup a message by a topic without wildcards."""
 lookup_api.label:
 """Lookup a message"""