initial commit

common/errorlog.cpp

@@ -0,0 +1,74 @@
+/*
+    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
+*/
+#include "errorlog.h"
+#include "checksum.h"
+
+#include "td/utils/port/FileFd.h"
+#include "td/utils/filesystem.h"
+#include "td/utils/port/path.h"
+#include "td/utils/Time.h"
+
+#include <mutex>
+
+namespace ton {
+
+namespace errorlog {
+
+td::FileFd fd;
+std::mutex init_mutex_;
+std::string files_path_;
+
+void ErrorLog::create(std::string db_root) {
+  init_mutex_.lock();
+  if (!fd.empty()) {
+    init_mutex_.unlock();
+    return;
+  }
+  auto path = db_root + "/error";
+  td::mkdir(path).ensure();
+  files_path_ = path + "/files";
+  td::mkdir(files_path_).ensure();
+  auto R = td::FileFd::open(path + "/log.txt",
+                            td::FileFd::Flags::Write | td::FileFd::Flags::Append | td::FileFd::Flags::Create);
+  R.ensure();
+  fd = R.move_as_ok();
+  init_mutex_.unlock();
+}
+
+void ErrorLog::log(std::string error) {
+  error = PSTRING() << "[" << td::Clocks::system() << "] " << error << "\n";
+  CHECK(!fd.empty());
+  auto s = td::Slice{error};
+  while (s.size() > 0) {
+    auto R = fd.write(s);
+    R.ensure();
+    s.remove_prefix(R.move_as_ok());
+  }
+}
+
+void ErrorLog::log_file(td::BufferSlice data) {
+  auto filename = sha256_bits256(data.as_slice());
+  auto path = files_path_ + "/" + filename.to_hex();
+
+  td::write_file(path, data.as_slice()).ensure();
+}
+
+}  // namespace errorlog
+
+}  // namespace ton