/*

 * 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/rolling/fixedwindowrollingpolicy.h>

#include <log4cxx/helpers/pool.h>

#include <log4cxx/helpers/integer.h>

#include <log4cxx/helpers/stringhelper.h>

#include <log4cxx/helpers/optionconverter.h>

#include <log4cxx/helpers/loglog.h>

#include <log4cxx/helpers/exception.h>

#include <log4cxx/rolling/rolloverdescription.h>

#include <log4cxx/rolling/filerenameaction.h>

#include <log4cxx/rolling/gzcompressaction.h>

#include <log4cxx/rolling/zipcompressaction.h>

#include <log4cxx/pattern/integerpatternconverter.h>

#include <log4cxx/private/rollingpolicybase_priv.h>

using namespace LOG4CXX_NS;

using namespace LOG4CXX_NS::rolling;

using namespace LOG4CXX_NS::helpers;

using namespace LOG4CXX_NS::pattern;

#define priv static_cast<FixedWindowRollingPolicyPrivate*>(m_priv.get())

struct FixedWindowRollingPolicy::FixedWindowRollingPolicyPrivate : public RollingPolicyBasePrivate {

  FixedWindowRollingPolicyPrivate() :

    RollingPolicyBasePrivate(),

    minIndex(1),

    maxIndex(7),

    explicitActiveFile(false)

  {}

  int minIndex;

  int maxIndex;

  bool explicitActiveFile;

  bool throwIOExceptionOnForkFailure = true;

};

IMPLEMENT_LOG4CXX_OBJECT(FixedWindowRollingPolicy)

FixedWindowRollingPolicy::FixedWindowRollingPolicy() :

  RollingPolicyBase (std::make_unique<FixedWindowRollingPolicyPrivate>())

{

}

Unexecuted instantiation: log4cxx::rolling::FixedWindowRollingPolicy::FixedWindowRollingPolicy()

Unexecuted instantiation: log4cxx::rolling::FixedWindowRollingPolicy::FixedWindowRollingPolicy()

FixedWindowRollingPolicy::~FixedWindowRollingPolicy(){}

void FixedWindowRollingPolicy::setMaxIndex(int maxIndex1)

{

  priv->maxIndex = maxIndex1;

}

void FixedWindowRollingPolicy::setMinIndex(int minIndex1)

{

  priv->minIndex = minIndex1;

}

void FixedWindowRollingPolicy::setOption(const LogString& option,

  const LogString& value)

{

  if (StringHelper::equalsIgnoreCase(option,

      LOG4CXX_STR("MININDEX"),

      LOG4CXX_STR("minindex")))

  {

    priv->minIndex = OptionConverter::toInt(value, 1);

  }

  else if (StringHelper::equalsIgnoreCase(option,

      LOG4CXX_STR("MAXINDEX"),

      LOG4CXX_STR("maxindex")))

  {

    priv->maxIndex = OptionConverter::toInt(value, 7);

  }

  else if (StringHelper::equalsIgnoreCase(option,

      LOG4CXX_STR("THROWIOEXCEPTIONONFORKFAILURE"),

      LOG4CXX_STR("throwioexceptiononforkfailure")))

  {

    priv->throwIOExceptionOnForkFailure = OptionConverter::toBoolean(value, true);

  }

  else

  {

    RollingPolicyBase::setOption(option, value);

  }

}

/**

 * {@inheritDoc}

 */

void FixedWindowRollingPolicy::activateOptions(Pool& p)

{

  RollingPolicyBase::activateOptions(p);

  if (priv->maxIndex < priv->minIndex)

  {

    LogLog::warn(

      LOG4CXX_STR("MaxIndex  cannot be smaller than MinIndex."));

    priv->maxIndex = priv->minIndex;

  }

  if ((priv->maxIndex - priv->minIndex) > MAX_WINDOW_SIZE)

  {

    LogLog::warn(LOG4CXX_STR("Large window sizes are not allowed."));

    priv->maxIndex = priv->minIndex + MAX_WINDOW_SIZE;

  }

  PatternConverterPtr itc = getIntegerPatternConverter();

  if (itc == NULL)

  {

    throw IllegalStateException();

  }

}

/**

 * {@inheritDoc}

 */

RolloverDescriptionPtr FixedWindowRollingPolicy::initialize(

  const   LogString&  currentActiveFile,

  const   bool        append,

  Pool&       pool)

{

  LogString newActiveFile(currentActiveFile);

  priv->explicitActiveFile = false;

  if (currentActiveFile.length() > 0)

  {

    priv->explicitActiveFile = true;

    newActiveFile = currentActiveFile;

  }

  if (!priv->explicitActiveFile)

  {

    LogString buf;

    ObjectPtr obj = std::make_shared<Integer>(priv->minIndex);

    formatFileName(obj, buf, pool);

    newActiveFile = buf;

  }

  ActionPtr noAction;

  return std::make_shared<RolloverDescription>(newActiveFile, append, noAction, noAction);

}

/**

 * {@inheritDoc}

 */

RolloverDescriptionPtr FixedWindowRollingPolicy::rollover(

  const   LogString&  currentActiveFile,

  const   bool        append,

  Pool&       pool)

{

  RolloverDescriptionPtr desc;

  if (priv->maxIndex < 0)

  {

    return desc;

  }

  int purgeStart = priv->minIndex;

  if (!priv->explicitActiveFile)

  {

    purgeStart++;

  }

  if (!purge(purgeStart, priv->maxIndex, pool))

  {

    return desc;

  }

  LogString buf;

  ObjectPtr obj = std::make_shared<Integer>(purgeStart);

  formatFileName(obj, buf, pool);

  LogString renameTo(buf);

  LogString compressedName(renameTo);

  ActionPtr compressAction ;

  if(getCreateIntermediateDirectories()){

    File compressedFile(compressedName);

    File compressedParent (compressedFile.getParent(pool));

    compressedParent.mkdirs(pool);

  }

  if (StringHelper::endsWith(renameTo, LOG4CXX_STR(".gz")))

  {

    renameTo.resize(renameTo.size() - 3);

    GZCompressActionPtr comp = std::make_shared<GZCompressAction>(

          File().setPath(renameTo),

          File().setPath(compressedName),

          true);

    comp->setThrowIOExceptionOnForkFailure(priv->throwIOExceptionOnForkFailure);

    compressAction = comp;

  }

  else if (StringHelper::endsWith(renameTo, LOG4CXX_STR(".zip")))

  {

    renameTo.resize(renameTo.size() - 4);

    ZipCompressActionPtr comp = std::make_shared<ZipCompressAction>(

          File().setPath(renameTo),

          File().setPath(compressedName),

          true);

    comp->setThrowIOExceptionOnForkFailure(priv->throwIOExceptionOnForkFailure);

    compressAction = comp;

  }

  auto renameAction = std::make_shared<FileRenameAction>(

        File().setPath(currentActiveFile),

        File().setPath(renameTo),

        false);

  desc = std::make_shared<RolloverDescription>(

        currentActiveFile,  append,

        renameAction,       compressAction);

  return desc;

}

/**

 * Get index of oldest log file to be retained.

 * @return index of oldest log file.

 */

int FixedWindowRollingPolicy::getMaxIndex() const

{

  return priv->maxIndex;

}

/**

 * Get index of most recent log file.

 * @return index of oldest log file.

 */

int FixedWindowRollingPolicy::getMinIndex() const

{

  return priv->minIndex;

}

/**

 * Purge and rename old log files in preparation for rollover

 * @param lowIndex low index

 * @param highIndex high index.  Log file associated with high

 * index will be deleted if needed.

 * @return true if purge was successful and rollover should be attempted.

 */

bool FixedWindowRollingPolicy::purge(int lowIndex, int highIndex, Pool& p) const

{

  int suffixLength = 0;

  std::vector<FileRenameActionPtr> renames;

  LogString buf;

  ObjectPtr obj = std::make_shared<Integer>(lowIndex);

  formatFileName(obj, buf, p);

  LogString lowFilename(buf);

  if (lowFilename.compare(lowFilename.length() - 3, 3, LOG4CXX_STR(".gz")) == 0)

  {

    suffixLength = 3;

  }

  else if (lowFilename.compare(lowFilename.length() - 4, 4, LOG4CXX_STR(".zip")) == 0)

  {

    suffixLength = 4;

  }

  for (int i = lowIndex; i <= highIndex; i++)

  {

    File toRenameCompressed;

    toRenameCompressed.setPath(lowFilename);

    File toRenameBase;

    toRenameBase.setPath(lowFilename.substr(0, lowFilename.length() - suffixLength));

    File* toRename = &toRenameCompressed;

    bool isBase = false;

    bool exists = toRenameCompressed.exists(p);

    if (suffixLength > 0)

    {

      if (exists)

      {

        if (toRenameBase.exists(p))

        {

          toRenameBase.deleteFile(p);

        }

      }

      else

      {

        toRename = &toRenameBase;

        exists = toRenameBase.exists(p);

        isBase = true;

      }

    }

    if (exists)

    {

      //

      //    if at upper index then

      //        attempt to delete last file

      //        if that fails then abandon purge

      if (i == highIndex)

      {

        if (!toRename->deleteFile(p))

        {

          return false;

        }

        break;

      }

      //

      //   if intermediate index

      //     add a rename action to the list

      buf.erase(buf.begin(), buf.end());

      obj = std::make_shared<Integer>(i + 1);

      formatFileName(obj, buf, p);

      LogString highFilename(buf);

      LogString renameTo(highFilename);

      if (isBase)

      {

        renameTo =

          highFilename.substr(0, highFilename.length() - suffixLength);

      }

      renames.push_back(std::make_shared<FileRenameAction>(*toRename, File().setPath(renameTo), true));

      lowFilename = highFilename;

    }

    else

    {

      break;

    }

  }

  //

  //   work renames backwards

  //

  for (std::vector<FileRenameActionPtr>::reverse_iterator iter = renames.rbegin();

    iter != renames.rend();

    iter++)

  {

    try

    {

      if (!(*iter)->execute(p))

      {

        return false;

      }

    }

    catch (std::exception&)

    {

      LogLog::warn(LOG4CXX_STR("Exception during purge in RollingFileAppender"));

      return false;

    }

  }

  return true;

}

#define RULES_PUT(spec, cls) \

  specs.insert(PatternMap::value_type(LogString(LOG4CXX_STR(spec)), (PatternConstructor) cls ::newInstance))

LOG4CXX_NS::pattern::PatternMap FixedWindowRollingPolicy::getFormatSpecifiers() const

{

  PatternMap specs;

  RULES_PUT("i", IntegerPatternConverter);

  RULES_PUT("index", IntegerPatternConverter);

  return specs;

}