mojo/environment/default_logger_impl.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "mojo/environment/default_logger_impl.h"
   6
   7 #include "base/logging.h"
   8 #include "base/macros.h"
   9
  10 namespace mojo {
  11 namespace internal {
  12 namespace {
  13
  14 // We rely on log levels being the same numerically:
  15 COMPILE_ASSERT(logging::LOG_VERBOSE == MOJO_LOG_LEVEL_VERBOSE,
  16                verbose_log_level_value_mismatch);
  17 COMPILE_ASSERT(logging::LOG_INFO == MOJO_LOG_LEVEL_INFO,
  18                info_log_level_value_mismatch);
  19 COMPILE_ASSERT(logging::LOG_WARNING == MOJO_LOG_LEVEL_WARNING,
  20                warning_log_level_value_mismatch);
  21 COMPILE_ASSERT(logging::LOG_ERROR == MOJO_LOG_LEVEL_ERROR,
  22                error_log_level_value_mismatch);
  23 COMPILE_ASSERT(logging::LOG_FATAL == MOJO_LOG_LEVEL_FATAL,
  24                fatal_log_level_value_mismatch);
  25
  26 int MojoToChromiumLogLevel(MojoLogLevel log_level) {
  27   // See the compile asserts above.
  28   return static_cast<int>(log_level);
  29 }
  30
  31 MojoLogLevel ChromiumToMojoLogLevel(int chromium_log_level) {
  32   // See the compile asserts above.
  33   return static_cast<MojoLogLevel>(chromium_log_level);
  34 }
  35
  36 void LogMessage(MojoLogLevel log_level, const char* message) {
  37   int chromium_log_level = MojoToChromiumLogLevel(log_level);
  38   int chromium_min_log_level = logging::GetMinLogLevel();
  39   // "Fatal" errors aren't suppressable.
  40   DCHECK_LE(chromium_min_log_level, logging::LOG_FATAL);
  41   if (chromium_log_level < chromium_min_log_level)
  42     return;
  43
  44   // TODO(vtl): Possibly, we should try to pull out the file and line number
  45   // from |message|.
  46   logging::LogMessage(__FILE__, __LINE__, chromium_log_level).stream()
  47       << message;
  48 }
  49
  50 MojoLogLevel GetMinimumLogLevel() {
  51   return ChromiumToMojoLogLevel(logging::GetMinLogLevel());
  52 }
  53
  54 void SetMinimumLogLevel(MojoLogLevel log_level) {
  55   logging::SetMinLogLevel(MojoToChromiumLogLevel(log_level));
  56 }
  57
  58 const MojoLogger kDefaultLogger = {
  59   LogMessage,
  60   GetMinimumLogLevel,
  61   SetMinimumLogLevel
  62 };
  63
  64 }  // namespace
  65
  66 const MojoLogger* GetDefaultLoggerImpl() {
  67   return &kDefaultLogger;
  68 }
  69
  70 }  // namespace internal
  71 }  // namespace mojo