Use request promise in getChatAdministrators.

td/telegram/ContactsManager.cpp

@@ -13399,7 +13399,7 @@ void ContactsManager::on_channel_status_changed(Channel *c, ChannelId channel_id
     c->is_creator_changed = true;
 
     send_get_channel_full_query(nullptr, channel_id, Auto(), "update channel owner");
-    reload_dialog_administrators(DialogId(channel_id), 0, Auto());
+    reload_dialog_administrators(DialogId(channel_id), {}, Auto());
     remove_dialog_suggested_action(SuggestedAction{SuggestedAction::Type::ConvertToGigagroup, DialogId(channel_id)});
   }
 
@@ -15234,60 +15234,39 @@ void ContactsManager::get_channel_participants(ChannelId channel_id,
       ->send(channel_id, participants_filter, offset, limit);
 }
 
-vector<DialogAdministrator> ContactsManager::get_dialog_administrators(DialogId dialog_id, int left_tries,
+td_api::object_ptr<td_api::chatAdministrators> ContactsManager::get_chat_administrators_object(
-                                                                       Promise<Unit> &&promise) {
+    const vector<DialogAdministrator> &dialog_administrators) {
-  LOG(INFO) << "Receive GetChatAdministrators request in " << dialog_id << " with " << left_tries << " left tries";
+  auto administrator_objects = transform(dialog_administrators, [this](const DialogAdministrator &administrator) {
+    return administrator.get_chat_administrator_object(this);
+  });
+  return td_api::make_object<td_api::chatAdministrators>(std::move(administrator_objects));
+}
+
+void ContactsManager::get_dialog_administrators(DialogId dialog_id,
+                                                Promise<td_api::object_ptr<td_api::chatAdministrators>> &&promise) {
   if (!td_->messages_manager_->have_dialog_force(dialog_id, "get_dialog_administrators")) {
-    promise.set_error(Status::Error(400, "Chat not found"));
+    return promise.set_error(Status::Error(400, "Chat not found"));
-    return {};
   }
 
   switch (dialog_id.get_type()) {
     case DialogType::User:
     case DialogType::SecretChat:
-      promise.set_value(Unit());
+      return promise.set_value(td_api::make_object<td_api::chatAdministrators>());
-      return {};
     case DialogType::Chat:
     case DialogType::Channel:
       break;
     case DialogType::None:
     default:
       UNREACHABLE();
-      return {};
+      return;
   }
 
   auto it = dialog_administrators_.find(dialog_id);
   if (it != dialog_administrators_.end()) {
-    promise.set_value(Unit());
+    reload_dialog_administrators(dialog_id, it->second, Auto());  // update administrators cache
-    if (left_tries >= 2) {
+    return promise.set_value(get_chat_administrators_object(it->second));
-      auto hash = get_vector_hash(transform(it->second, [](const DialogAdministrator &administrator) {
-        return static_cast<uint64>(administrator.get_user_id().get());
-      }));
-      reload_dialog_administrators(dialog_id, hash, Auto());  // update administrators cache
-    }
-    return it->second;
   }
 
-  if (left_tries >= 3) {
-    load_dialog_administrators(dialog_id, std::move(promise));
-    return {};
-  }
-
-  if (left_tries >= 2) {
-    reload_dialog_administrators(dialog_id, 0, std::move(promise));
-    return {};
-  }
-
-  LOG(ERROR) << "Have no known administrators in " << dialog_id;
-  promise.set_value(Unit());
-  return {};
-}
-
-string ContactsManager::get_dialog_administrators_database_key(DialogId dialog_id) {
-  return PSTRING() << "adm" << (-dialog_id.get());
-}
-
-void ContactsManager::load_dialog_administrators(DialogId dialog_id, Promise<Unit> &&promise) {
   if (G()->parameters().use_chat_info_db) {
     LOG(INFO) << "Load administrators of " << dialog_id << " from database";
     G()->td_db()->get_sqlite_pmc()->get(get_dialog_administrators_database_key(dialog_id),
@@ -15297,16 +15276,22 @@ void ContactsManager::load_dialog_administrators(DialogId dialog_id, Promise<Uni
                                                        &ContactsManager::on_load_dialog_administrators_from_database,
                                                        dialog_id, std::move(value), std::move(promise));
                                         }));
-  } else {
+    return;
-    promise.set_value(Unit());
   }
+
+  reload_dialog_administrators(dialog_id, {}, std::move(promise));
 }
 
-void ContactsManager::on_load_dialog_administrators_from_database(DialogId dialog_id, string value,
+string ContactsManager::get_dialog_administrators_database_key(DialogId dialog_id) {
-                                                                  Promise<Unit> &&promise) {
+  return PSTRING() << "adm" << (-dialog_id.get());
-  if (value.empty() || G()->close_flag()) {
+}
-    promise.set_value(Unit());
+
-    return;
+void ContactsManager::on_load_dialog_administrators_from_database(
+    DialogId dialog_id, string value, Promise<td_api::object_ptr<td_api::chatAdministrators>> &&promise) {
+  TRY_STATUS_PROMISE(promise, G()->close_status());
+
+  if (value.empty()) {
+    return reload_dialog_administrators(dialog_id, {}, std::move(promise));
   }
 
   vector<DialogAdministrator> administrators;
@@ -15332,13 +15317,18 @@ void ContactsManager::on_load_dialog_administrators_from_database(DialogId dialo
   lock_promise.set_value(Unit());
 }
 
-void ContactsManager::on_load_administrator_users_finished(DialogId dialog_id,
+void ContactsManager::on_load_administrator_users_finished(
-                                                           vector<DialogAdministrator> administrators, Result<> result,
+    DialogId dialog_id, vector<DialogAdministrator> administrators, Result<> result,
-                                                           Promise<Unit> promise) {
+    Promise<td_api::object_ptr<td_api::chatAdministrators>> &&promise) {
-  if (!G()->close_flag() && result.is_ok()) {
+  TRY_STATUS_PROMISE(promise, G()->close_status());
-    dialog_administrators_.emplace(dialog_id, std::move(administrators));
+
+  if (result.is_error()) {
+    return reload_dialog_administrators(dialog_id, {}, std::move(promise));
   }
-  promise.set_value(Unit());
+
+  auto it = dialog_administrators_.emplace(dialog_id, std::move(administrators)).first;
+  reload_dialog_administrators(dialog_id, it->second, Auto());  // update administrators cache
+  promise.set_value(get_chat_administrators_object(it->second));
 }
 
 void ContactsManager::on_update_channel_administrator_count(ChannelId channel_id, int32 administrator_count) {
@@ -15394,19 +15384,49 @@ void ContactsManager::on_update_dialog_administrators(DialogId dialog_id, vector
   }
 }
 
-void ContactsManager::reload_dialog_administrators(DialogId dialog_id, int64 hash, Promise<Unit> &&promise) {
+void ContactsManager::reload_dialog_administrators(DialogId dialog_id,
+                                                   const vector<DialogAdministrator> &dialog_administrators,
+                                                   Promise<td_api::object_ptr<td_api::chatAdministrators>> &&promise) {
+  auto query_promise = PromiseCreator::lambda(
+      [actor_id = actor_id(this), dialog_id, promise = std::move(promise)](Result<Unit> &&result) mutable {
+        if (promise) {
+          if (result.is_ok()) {
+            send_closure(actor_id, &ContactsManager::on_reload_dialog_administrators, dialog_id, std::move(promise));
+          } else {
+            promise.set_error(result.move_as_error());
+          }
+        }
+      });
   switch (dialog_id.get_type()) {
     case DialogType::Chat:
-      load_chat_full(dialog_id.get_chat_id(), false, std::move(promise), "reload_dialog_administrators");
+      load_chat_full(dialog_id.get_chat_id(), false, std::move(query_promise), "reload_dialog_administrators");
       break;
-    case DialogType::Channel:
+    case DialogType::Channel: {
-      td_->create_handler<GetChannelAdministratorsQuery>(std::move(promise))->send(dialog_id.get_channel_id(), hash);
+      auto hash = get_vector_hash(transform(dialog_administrators, [](const DialogAdministrator &administrator) {
+        return static_cast<uint64>(administrator.get_user_id().get());
+      }));
+      td_->create_handler<GetChannelAdministratorsQuery>(std::move(query_promise))
+          ->send(dialog_id.get_channel_id(), hash);
       break;
+    }
     default:
       UNREACHABLE();
   }
 }
 
+void ContactsManager::on_reload_dialog_administrators(
+    DialogId dialog_id, Promise<td_api::object_ptr<td_api::chatAdministrators>> &&promise) {
+  TRY_STATUS_PROMISE(promise, G()->close_status());
+
+  auto it = dialog_administrators_.find(dialog_id);
+  if (it != dialog_administrators_.end()) {
+    return promise.set_value(get_chat_administrators_object(it->second));
+  }
+
+  LOG(ERROR) << "Failed to load administrators in " << dialog_id;
+  promise.set_error(Status::Error(500, "Failed to find chat administrators"));
+}
+
 void ContactsManager::on_chat_update(telegram_api::chatEmpty &chat, const char *source) {
   ChatId chat_id(chat.id_);
   if (!chat_id.is_valid()) {

td/telegram/ContactsManager.h

@@ -534,7 +534,7 @@ class ContactsManager final : public Actor {
   void search_dialog_participants(DialogId dialog_id, const string &query, int32 limit, DialogParticipantsFilter filter,
                                   Promise<DialogParticipants> &&promise);
 
-  vector<DialogAdministrator> get_dialog_administrators(DialogId dialog_id, int left_tries, Promise<Unit> &&promise);
+  void get_dialog_administrators(DialogId dialog_id, Promise<td_api::object_ptr<td_api::chatAdministrators>> &&promise);
 
   void get_channel_participants(ChannelId channel_id, tl_object_ptr<td_api::SupergroupMembersFilter> &&filter,
                                 string additional_query, int32 offset, int32 limit, int32 additional_limit,
@@ -1476,16 +1476,23 @@ class ContactsManager final : public Actor {
   void finish_get_channel_participant(ChannelId channel_id, DialogParticipant &&dialog_participant,
                                       Promise<DialogParticipant> &&promise);
 
+  td_api::object_ptr<td_api::chatAdministrators> ContactsManager::get_chat_administrators_object(
+      const vector<DialogAdministrator> &dialog_administrators);
+
   static string get_dialog_administrators_database_key(DialogId dialog_id);
 
-  void load_dialog_administrators(DialogId dialog_id, Promise<Unit> &&promise);
+  void on_load_dialog_administrators_from_database(DialogId dialog_id, string value,
-
+                                                   Promise<td_api::object_ptr<td_api::chatAdministrators>> &&promise);
-  void on_load_dialog_administrators_from_database(DialogId dialog_id, string value, Promise<Unit> &&promise);
 
   void on_load_administrator_users_finished(DialogId dialog_id, vector<DialogAdministrator> administrators,
-                                            Result<> result, Promise<Unit> promise);
+                                            Result<> result,
+                                            Promise<td_api::object_ptr<td_api::chatAdministrators>> &&promise);
 
-  void reload_dialog_administrators(DialogId dialog_id, int64 hash, Promise<Unit> &&promise);
+  void reload_dialog_administrators(DialogId dialog_id, const vector<DialogAdministrator> &dialog_administrators,
+                                    Promise<td_api::object_ptr<td_api::chatAdministrators>> &&promise);
+
+  void on_reload_dialog_administrators(DialogId dialog_id,
+                                       Promise<td_api::object_ptr<td_api::chatAdministrators>> &&promise);
 
   void remove_dialog_suggested_action(SuggestedAction action);
 

td/telegram/Td.cpp

@@ -1764,30 +1764,6 @@ class UpgradeGroupChatToSupergroupChatRequest final : public RequestActor<> {
   }
 };
 
-class GetChatAdministratorsRequest final : public RequestActor<> {
-  DialogId dialog_id_;
-
-  vector<DialogAdministrator> administrators_;
-
-  void do_run(Promise<Unit> &&promise) final {
-    administrators_ = td_->contacts_manager_->get_dialog_administrators(dialog_id_, get_tries(), std::move(promise));
-  }
-
-  void do_send_result() final {
-    auto administrator_objects = transform(
-        administrators_, [contacts_manager = td_->contacts_manager_.get()](const DialogAdministrator &administrator) {
-          return administrator.get_chat_administrator_object(contacts_manager);
-        });
-    send_result(td_api::make_object<td_api::chatAdministrators>(std::move(administrator_objects)));
-  }
-
- public:
-  GetChatAdministratorsRequest(ActorShared<Td> td, uint64 request_id, int64 dialog_id)
-      : RequestActor(std::move(td), request_id), dialog_id_(dialog_id) {
-    set_tries(3);
-  }
-};
-
 class CheckChatInviteLinkRequest final : public RequestActor<> {
   string invite_link_;
 
@@ -6194,7 +6170,8 @@ void Td::on_request(uint64 id, td_api::searchChatMembers &request) {
 }
 
 void Td::on_request(uint64 id, const td_api::getChatAdministrators &request) {
-  CREATE_REQUEST(GetChatAdministratorsRequest, request.chat_id_);
+  CREATE_REQUEST_PROMISE();
+  contacts_manager_->get_dialog_administrators(DialogId(request.chat_id_), std::move(promise));
 }
 
 void Td::on_request(uint64 id, const td_api::replacePrimaryChatInviteLink &request) {