From 59acbf6d15a4c20066da92c574f93cbb4c54b8a5 Mon Sep 17 00:00:00 2001
From: levlam <levlam@telegram.org>
Date: Wed, 5 Oct 2022 16:32:16 +0300
Subject: [PATCH] Add warnings about big file nodes.

---
 td/telegram/files/FileManager.cpp | 5 +++++
 td/telegram/files/FileManager.h   | 2 ++
 2 files changed, 7 insertions(+)

diff --git a/td/telegram/files/FileManager.cpp b/td/telegram/files/FileManager.cpp
index edb8dabb5..36ca89864 100644
--- a/td/telegram/files/FileManager.cpp
+++ b/td/telegram/files/FileManager.cpp
@@ -1702,6 +1702,11 @@ Result<FileId> FileManager::merge(FileId x_file_id, FileId y_file_id, bool no_sy
     node->on_info_changed();
   }
 
+  if (node->file_ids_.size() > (1u << file_node_size_warning_exp_)) {
+    LOG(WARNING) << "File of type " << file_view.get_type() << " has " << node->file_ids_.size() << " file identifiers";
+    file_node_size_warning_exp_++;
+  }
+
   // Check if some download/upload queries are ready
   for (auto file_id : vector<FileId>(node->file_ids_)) {
     auto *info = get_file_id_info(file_id);
diff --git a/td/telegram/files/FileManager.h b/td/telegram/files/FileManager.h
index ac53d8f0f..1572b609c 100644
--- a/td/telegram/files/FileManager.h
+++ b/td/telegram/files/FileManager.h
@@ -602,6 +602,8 @@ class FileManager final : public FileLoadManager::Callback {
 
   std::set<std::string> bad_paths_;
 
+  int file_node_size_warning_exp_ = 12;
+
   FileId next_file_id();
   FileNodeId next_file_node_id();
   int32 next_pmc_file_id();