/*

 * 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 <log4cxx/logstring.h>

#include <log4cxx/appender.h>

#include <log4cxx/logger.h>

#include <log4cxx/varia/fallbackerrorhandler.h>

#include <log4cxx/helpers/loglog.h>

#include <log4cxx/helpers/stringhelper.h>

#include <log4cxx/spi/loggingevent.h>

#include <log4cxx/hierarchy.h>

#include <log4cxx/logmanager.h>

using namespace LOG4CXX_NS;

using namespace LOG4CXX_NS::helpers;

using namespace LOG4CXX_NS::spi;

using namespace LOG4CXX_NS::varia;

IMPLEMENT_LOG4CXX_OBJECT(FallbackErrorHandler)

struct FallbackErrorHandler::FallbackErrorHandlerPrivate

{

  AppenderWeakPtr backup;

  AppenderWeakPtr primary;

  std::vector<LoggerPtr> loggers;

  bool errorReported = false;

};

FallbackErrorHandler::FallbackErrorHandler()

  : m_priv(std::make_unique<FallbackErrorHandlerPrivate>())

{

}

Unexecuted instantiation: log4cxx::varia::FallbackErrorHandler::FallbackErrorHandler()

Unexecuted instantiation: log4cxx::varia::FallbackErrorHandler::FallbackErrorHandler()

FallbackErrorHandler::~FallbackErrorHandler() {}

void FallbackErrorHandler::setLogger(const LoggerPtr& logger)

{

  if (LogLog::isDebugEnabled())

  {

    LogLog::debug(((LogString) LOG4CXX_STR("FB: Adding logger ["))

      + logger->getName() + LOG4CXX_STR("]."));

  }

  m_priv->loggers.push_back(logger);

}

void FallbackErrorHandler::error(const LogString& message,

  const std::exception& e,

  int errorCode) const

{

  error(message, e, errorCode, 0);

}

void FallbackErrorHandler::error(const LogString& message,

  const std::exception& e,

  int, const spi::LoggingEventPtr&) const

{

  if (LogLog::isDebugEnabled())

  {

    LogLog::debug(((LogString) LOG4CXX_STR("FB: The following error reported: "))

      +  message, e);

    LogLog::debug(LOG4CXX_STR("FB: INITIATING FALLBACK PROCEDURE."));

  }

  AppenderPtr primaryLocked = m_priv->primary.lock();

  AppenderPtr backupLocked = m_priv->backup.lock();

  if ( !primaryLocked || !backupLocked )

  {

    return;

  }

  for (LoggerPtr l : m_priv->loggers)

  {

    if (LogLog::isDebugEnabled())

    {

      LogLog::debug(LOG4CXX_STR("FB: Replacing [")

        + primaryLocked->getName() + LOG4CXX_STR("] with [")

        + backupLocked->getName() + LOG4CXX_STR("] in logger [")

        + l->getName() + LOG4CXX_STR("]."));

    }

    if (!l->replaceAppender(primaryLocked, backupLocked))

    {

      LogLog::debug(LOG4CXX_STR("FB: Failed to replace [")

        + primaryLocked->getName() + LOG4CXX_STR("] with [")

        + backupLocked->getName() + LOG4CXX_STR("] in logger [")

        + l->getName() + LOG4CXX_STR("]."));

    }

  }

  m_priv->errorReported = true;

}

void FallbackErrorHandler::setAppender(const AppenderPtr& primary1)

{

  if (LogLog::isDebugEnabled())

  {

    LogLog::debug(((LogString) LOG4CXX_STR("FB: Setting primary appender to ["))

      + primary1->getName() + LOG4CXX_STR("]."));

  }

  m_priv->primary = primary1;

}

void FallbackErrorHandler::setBackupAppender(const AppenderPtr& backup1)

{

  if (LogLog::isDebugEnabled())

  {

    LogLog::debug(((LogString) LOG4CXX_STR("FB: Setting backup appender to ["))

      + backup1->getName() + LOG4CXX_STR("]."));

  }

  m_priv->backup = backup1;

  // Make sure that we keep a reference to the appender around, since otherwise

  // the appender would be lost if it has no loggers that use it.

  auto repository = LogManager::getLoggerRepository();

  if (auto hierarchy = dynamic_cast<Hierarchy*>(repository.get()))

  {

    hierarchy->addAppender(backup1);

  }

}

void FallbackErrorHandler::activateOptions(Pool&)

{

}

void FallbackErrorHandler::setOption(const LogString&, const LogString&)

{

}

bool FallbackErrorHandler::errorReported() const

{

  return m_priv->errorReported;

}