/src/logging-log4cxx/src/main/cpp/loggingevent.cpp

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <chrono>
#include <log4cxx/spi/loggingevent.h>
#include <log4cxx/ndc.h>

#include <log4cxx/level.h>
#include <log4cxx/helpers/loglog.h>
#include <log4cxx/helpers/system.h>
#include <log4cxx/helpers/socket.h>
#if !defined(LOG4CXX)
  #define LOG4CXX 1
#endif
#include <log4cxx/helpers/aprinitializer.h>
#include <log4cxx/helpers/threadspecificdata.h>
#include <log4cxx/helpers/bytebuffer.h>
#include <log4cxx/helpers/date.h>
#include <log4cxx/helpers/optional.h>

using namespace LOG4CXX_NS;
using namespace LOG4CXX_NS::spi;
using namespace LOG4CXX_NS::helpers;

struct LoggingEvent::LoggingEventPrivate
{
  LoggingEventPrivate(const ThreadSpecificData::NamePairPtr p = ThreadSpecificData::getNames()) :
    timeStamp(0),
    pNames(p)
  {
  }

  LoggingEventPrivate
    ( const LogString& logger1
    , const LevelPtr& level1
    , const LocationInfo& locationInfo1
    , LogString&& message1
    , const ThreadSpecificData::NamePairPtr p = ThreadSpecificData::getNames()
    ) :
    logger(logger1),
    level(level1),
    message(std::move(message1)),
    timeStamp(Date::currentTime()),
    locationInfo(locationInfo1),
    chronoTimeStamp(std::chrono::microseconds(timeStamp)),
    pNames(p)
  {
  }

  LoggingEventPrivate(
    const LogString& logger1, const LevelPtr& level1,
    const LogString& message1, const LocationInfo& locationInfo1,
    const ThreadSpecificData::NamePairPtr& p = ThreadSpecificData::getNames()
    ) :
    logger(logger1),
    level(level1),
    message(message1),
    timeStamp(Date::currentTime()),
    locationInfo(locationInfo1),
    chronoTimeStamp(std::chrono::microseconds(timeStamp)),
    pNames(p)
  {
  }

  ~LoggingEventPrivate()
  {
    delete properties;
  }

  /**
  * The name of the logger used to make the logging request
  **/
  LogString logger;

  /** severity level of logging event. */
  LevelPtr level;

  /**
  * A map of String keys and String values.
  */
  std::map<LogString, LogString>* properties{NULL};

  /** The application supplied message. */
  LogString message;


  /** The number of microseconds elapsed since 1970-01-01
   *  at the time this logging event was created.
   */
  log4cxx_time_t timeStamp;

  /** The source code location where the logging request was made. */
  const spi::LocationInfo locationInfo;

  std::chrono::time_point<std::chrono::system_clock> chronoTimeStamp;

  /**
   *  Thread names that remain valid for the lifetime of this LoggingEvent
   *  (i.e. even after thread termination).
   */
  ThreadSpecificData::NamePairPtr pNames;

  struct DiagnosticContext
  {
    Optional<NDC::DiagnosticContext> ctx;
    MDC::Map map;
  };
  /**
   *  Used to hold the diagnostic context when the lifetime
   *  of this LoggingEvent exceeds the duration of the logging request.
   */
  mutable std::unique_ptr<DiagnosticContext> dc;
};

IMPLEMENT_LOG4CXX_OBJECT(LoggingEvent)


//
//   Accessor for start time.
//
log4cxx_time_t LoggingEvent::getStartTime()
{
  return APRInitializer::getStartTime();
}

LoggingEvent::LoggingEvent() :
  m_priv(std::make_unique<LoggingEventPrivate>())
{
}

LoggingEvent::LoggingEvent
  ( const LogString&    logger
  , const LevelPtr&     level
  , const LocationInfo& location
  , LogString&&         message
  )
  : m_priv(std::make_unique<LoggingEventPrivate>(logger, level, location, std::move(message)))
{
}

LoggingEvent::LoggingEvent(
  const LogString& logger1, const LevelPtr& level1,
  const LogString& message1, const LocationInfo& locationInfo1) :
  m_priv(std::make_unique<LoggingEventPrivate>(logger1, level1, message1, locationInfo1))
{
}

LoggingEvent::~LoggingEvent()
{
}

const LogString& LoggingEvent::getThreadUserName() const
{
  return m_priv->pNames->threadName;
}

bool LoggingEvent::getNDC(LogString& dest) const
{
  bool result = false;
  // Use the copy of the diagnostic context if it exists.
  // Otherwise use the NDC that is associated with the thread.
  if (m_priv->dc)
  {
    result = bool(m_priv->dc->ctx);
    if (result)
      dest.append(NDC::getFullMessage(m_priv->dc->ctx.value()));
  }
  else
    result = NDC::get(dest);
  return result;
}

bool LoggingEvent::getMDC(const LogString& key, LogString& dest) const
{
  bool result = false;
  // Use the copy of the diagnostic context if it exists.
  // Otherwise use the MDC that is associated with the thread.
  if (m_priv->dc)
  {
    auto& map = m_priv->dc->map;
    auto it = map.find(key);
    if (it != map.end() && !it->second.empty())
    {
      dest.append(it->second);
      result = true;
    }
  }
  else
    result = MDC::get(key, dest);
  return result;
}

LoggingEvent::KeySet LoggingEvent::getMDCKeySet() const
{
  LoggingEvent::KeySet result;
  if (m_priv->dc)
  {
    for (auto const& item : m_priv->dc->map)
      result.push_back(item.first);
  }
  else if (auto pData = ThreadSpecificData::getCurrentData())
  {
    for (auto const& item : pData->getMap())
      result.push_back(item.first);
  }
  return result;
}

void LoggingEvent::LoadDC() const
{
  m_priv->dc = std::make_unique<LoggingEventPrivate::DiagnosticContext>();
  if (auto pData = ThreadSpecificData::getCurrentData())
  {
    m_priv->dc->map = pData->getMap();
    auto& stack = pData->getStack();
    if (!stack.empty())
      m_priv->dc->ctx = stack.top();
  }
}

#if LOG4CXX_ABI_VERSION <= 15
void LoggingEvent::getMDCCopy() const
{
  if (!m_priv->dc)
    LoadDC();
}
#endif

bool LoggingEvent::getProperty(const LogString& key, LogString& dest) const
{
  if (m_priv->properties == 0)
  {
    return false;
  }

  std::map<LogString, LogString>::const_iterator  it = m_priv->properties->find(key);

  if (it != m_priv->properties->end())
  {
    dest.append(it->second);
    return true;
  }

  return false;
}

LoggingEvent::KeySet LoggingEvent::getPropertyKeySet() const
{
  LoggingEvent::KeySet set;

  if (m_priv->properties)
  {
    for (auto item : *m_priv->properties)
    {
      set.push_back(item.first);
    }
  }

  return set;
}

void LoggingEvent::setProperty(const LogString& key, const LogString& value)
{
  if (m_priv->properties == 0)
  {
    m_priv->properties = new std::map<LogString, LogString>;
  }

  (*m_priv->properties)[key] = value;
}

const LevelPtr& LoggingEvent::getLevel() const
{
  return m_priv->level;
}

const LogString& LoggingEvent::getLoggerName() const
{
  return m_priv->logger;
}

const LogString& LoggingEvent::getMessage() const
{
  return m_priv->message;
}

const LogString& LoggingEvent::getRenderedMessage() const
{
  return m_priv->message;
}

const LogString& LoggingEvent::getThreadName() const
{
  return m_priv->pNames->idString;
}

log4cxx_time_t LoggingEvent::getTimeStamp() const
{
  return m_priv->timeStamp;
}

const LOG4CXX_NS::spi::LocationInfo& LoggingEvent::getLocationInformation() const
{
  return m_priv->locationInfo;
}

std::chrono::time_point<std::chrono::system_clock> LoggingEvent::getChronoTimeStamp() const{
  return m_priv->chronoTimeStamp;
}


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Created: 2025-07-18 06:17