initial commit

tdutils/td/utils/FileLog.h

@@ -0,0 +1,57 @@
+/*
+    This file is part of TON Blockchain Library.
+
+    TON Blockchain Library is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 2 of the License, or
+    (at your option) any later version.
+
+    TON Blockchain Library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with TON Blockchain Library.  If not, see <http://www.gnu.org/licenses/>.
+
+    Copyright 2017-2019 Telegram Systems LLP
+*/
+#pragma once
+
+#include "td/utils/common.h"
+#include "td/utils/logging.h"
+#include "td/utils/port/FileFd.h"
+#include "td/utils/Slice.h"
+#include "td/utils/Status.h"
+
+namespace td {
+
+class FileLog : public LogInterface {
+  static constexpr int64 DEFAULT_ROTATE_THRESHOLD = 10 * (1 << 20);
+
+ public:
+  Status init(string path, int64 rotate_threshold = DEFAULT_ROTATE_THRESHOLD, bool redirect_stderr = true);
+
+  Slice get_path() const;
+
+  vector<string> get_file_paths() override;
+
+  void set_rotate_threshold(int64 rotate_threshold);
+
+  int64 get_rotate_threshold() const;
+
+  void append(CSlice cslice, int log_level) override;
+
+  void rotate() override;
+
+ private:
+  FileFd fd_;
+  string path_;
+  int64 size_ = 0;
+  int64 rotate_threshold_ = 0;
+  bool redirect_stderr_;
+
+  void do_rotate();
+};
+
+}  // namespace td