Allow to disable stderr redirect when logging to file.

GitOrigin-RevId: 7b91d362695cd73a640a9ed2a5d107b804536a16

td/generate/scheme/td_api.tl

@@ -3377,8 +3377,11 @@ updates updates:vector<Update> = Updates;
 //@description The log is written to stderr or an OS specific log
 logStreamDefault = LogStream;
 
-//@description The log is written to a file @path Path to the file to where the internal TDLib log will be written @max_file_size The maximum size of the file to where the internal TDLib log is written before the file will be auto-rotated
-logStreamFile path:string max_file_size:int53 = LogStream;
+//@description The log is written to a file
+//@path Path to the file to where the internal TDLib log will be written
+//@max_file_size The maximum size of the file to where the internal TDLib log is written before the file will be auto-rotated
+//@redirect_stderr Pass true to additionally redirect stderr to the log file. Ignored on Windows
+logStreamFile path:string max_file_size:int53 redirect_stderr:Bool = LogStream;
 
 //@description The log is written nowhere
 logStreamEmpty = LogStream;

td/telegram/Log.cpp

@@ -35,7 +35,8 @@ bool Log::set_file_path(string file_path) {
     return Logging::set_current_stream(td_api::make_object<td_api::logStreamDefault>()).is_ok();
   }
 
-  if (Logging::set_current_stream(td_api::make_object<td_api::logStreamFile>(file_path, max_log_file_size)).is_ok()) {
+  if (Logging::set_current_stream(td_api::make_object<td_api::logStreamFile>(file_path, max_log_file_size, true))
+          .is_ok()) {
     log_file_path = std::move(file_path);
     return true;
   }
@@ -46,7 +47,8 @@ bool Log::set_file_path(string file_path) {
 void Log::set_max_file_size(int64 max_file_size) {
   std::lock_guard<std::mutex> lock(log_mutex);
   max_log_file_size = max(max_file_size, static_cast<int64>(1));
-  Logging::set_current_stream(td_api::make_object<td_api::logStreamFile>(log_file_path, max_log_file_size)).ignore();
+  Logging::set_current_stream(td_api::make_object<td_api::logStreamFile>(log_file_path, max_log_file_size, true))
+      .ignore();
 }
 
 void Log::set_verbosity_level(int new_verbosity_level) {

td/telegram/Logging.cpp

@@ -61,8 +61,9 @@ Status Logging::set_current_stream(td_api::object_ptr<td_api::LogStream> stream)
       if (max_log_file_size <= 0) {
         return Status::Error("Max log file size must be positive");
       }
+      auto redirect_stderr = file_stream->redirect_stderr_;
 
-      TRY_STATUS(file_log.init(file_stream->path_, max_log_file_size));
+      TRY_STATUS(file_log.init(file_stream->path_, max_log_file_size, redirect_stderr));
       std::atomic_thread_fence(std::memory_order_release);  // better than nothing
       log_interface = &ts_log;
       return Status::OK();
@@ -85,7 +86,8 @@ Result<td_api::object_ptr<td_api::LogStream>> Logging::get_current_stream() {
     return td_api::make_object<td_api::logStreamEmpty>();
   }
   if (log_interface == &ts_log) {
-    return td_api::make_object<td_api::logStreamFile>(file_log.get_path().str(), file_log.get_rotate_threshold());
+    return td_api::make_object<td_api::logStreamFile>(file_log.get_path().str(), file_log.get_rotate_threshold(),
+                                                      file_log.get_redirect_stderr());
   }
   return Status::Error("Log stream is unrecognized");
 }

tdutils/td/utils/FileLog.cpp

@@ -65,6 +65,10 @@ int64 FileLog::get_rotate_threshold() const {
   return rotate_threshold_;
 }
 
+bool FileLog::get_redirect_stderr() const {
+  return redirect_stderr_;
+}
+
 void FileLog::append(CSlice cslice, int log_level) {
   Slice slice = cslice;
   while (!slice.empty()) {

tdutils/td/utils/FileLog.h

@@ -32,6 +32,8 @@ class FileLog : public LogInterface {
 
   int64 get_rotate_threshold() const;
 
+  bool get_redirect_stderr() const;
+
   void append(CSlice cslice, int log_level) override;
 
   void rotate() override;