log-config-section.cpp
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1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright (c) 2014-2022, Regents of the University of California,
4  * Arizona Board of Regents,
5  * Colorado State University,
6  * University Pierre & Marie Curie, Sorbonne University,
7  * Washington University in St. Louis,
8  * Beijing Institute of Technology,
9  * The University of Memphis.
10  *
11  * This file is part of NFD (Named Data Networking Forwarding Daemon).
12  * See AUTHORS.md for complete list of NFD authors and contributors.
13  *
14  * NFD is free software: you can redistribute it and/or modify it under the terms
15  * of the GNU General Public License as published by the Free Software Foundation,
16  * either version 3 of the License, or (at your option) any later version.
17  *
18  * NFD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
19  * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
20  * PURPOSE. See the GNU General Public License for more details.
21  *
22  * You should have received a copy of the GNU General Public License along with
23  * NFD, e.g., in COPYING.md file. If not, see <http://www.gnu.org/licenses/>.
24  */
25 
26 #include "log-config-section.hpp"
27 
28 #include <ndn-cxx/util/logger.hpp>
29 #include <ndn-cxx/util/logging.hpp>
30 
31 namespace nfd::log {
32 
33 static ndn::util::LogLevel
34 parseLogLevel(const ConfigSection& item, const std::string& key)
35 {
36  try {
37  return ndn::util::parseLogLevel(item.get_value<std::string>());
38  }
39  catch (const std::invalid_argument&) {
40  NDN_THROW_NESTED(ConfigFile::Error("Invalid log level for '" + key + "' in section 'log'"));
41  }
42 }
43 
44 static void
45 onConfig(const ConfigSection& section, bool isDryRun, const std::string&)
46 {
47  // log
48  // {
49  // ; default_level specifies the logging level for modules
50  // ; that are not explicitly named. All debugging levels
51  // ; listed above the selected value are enabled.
52  //
53  // default_level INFO
54  //
55  // ; You may also override the default for specific modules:
56  //
57  // FibManager DEBUG
58  // Forwarder WARN
59  // }
60 
61  auto defaultLevel = ndn::util::LogLevel::INFO;
62  auto item = section.get_child_optional("default_level");
63  if (item) {
64  defaultLevel = parseLogLevel(*item, "default_level");
65  }
66  if (!isDryRun) {
67  // default_level applies only to NFD loggers
68  ndn::util::Logging::setLevel("nfd.*", defaultLevel);
69  }
70 
71  for (const auto& i : section) {
72  if (i.first == "default_level") {
73  // do nothing
74  }
75  else {
76  auto level = parseLogLevel(i.second, i.first);
77  if (!isDryRun) {
78  if (i.first.find('.') == std::string::npos)
79  // backward compat: assume unqualified logger names refer to NFD loggers
80  ndn::util::Logging::setLevel("nfd." + i.first, level);
81  else
82  ndn::util::Logging::setLevel(i.first, level);
83  }
84  }
85  }
86 }
87 
88 void
90 {
91  config.addSectionHandler("log", &onConfig);
92 }
93 
94 } // namespace nfd::log
Configuration file parsing utility.
Definition: config-file.hpp:66
void addSectionHandler(const std::string &sectionName, ConfigSectionHandler subscriber)
Setup notification of configuration file sections.
Definition: config-file.cpp:77
void setConfigFile(ConfigFile &config)
static ndn::util::LogLevel parseLogLevel(const ConfigSection &item, const std::string &key)
static void onConfig(const ConfigSection &section, bool isDryRun, const std::string &)
boost::property_tree::ptree ConfigSection
A configuration file section.
Definition: config-file.hpp:41