// Module:  Log4CPLUS

// File:    appenderattachableimpl.cxx

// Created: 6/2001

// Author:  Tad E. Smith

//

//

// Copyright 2001-2017 Tad E. Smith

//

// Licensed 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 <log4cplus/appender.h>

#include <log4cplus/helpers/appenderattachableimpl.h>

#include <log4cplus/helpers/loglog.h>

#include <log4cplus/spi/loggingevent.h>

#include <log4cplus/thread/syncprims-pub-impl.h>

#include <algorithm>

namespace log4cplus

{

namespace spi

{

AppenderAttachable::~AppenderAttachable()

{ }

} // namespace spi

namespace helpers

{

//////////////////////////////////////////////////////////////////////////////

// log4cplus::helpers::AppenderAttachableImpl ctor and dtor

//////////////////////////////////////////////////////////////////////////////

AppenderAttachableImpl::AppenderAttachableImpl()

{ }

AppenderAttachableImpl::~AppenderAttachableImpl()

{ }

///////////////////////////////////////////////////////////////////////////////

// log4cplus::helpers::AppenderAttachableImpl public methods

///////////////////////////////////////////////////////////////////////////////

void

AppenderAttachableImpl::addAppender(SharedAppenderPtr newAppender)

{

    if (! newAppender)

    {

        getLogLog().warn( LOG4CPLUS_TEXT("Tried to add NULL appender") );

        return;

    }

    thread::MutexGuard guard (appender_list_mutex);

    auto it = std::find(appenderList.begin(), appenderList.end(), newAppender);

    if (it == appenderList.end())

    {

        appenderList.push_back(newAppender);

    }

}

AppenderAttachableImpl::ListType

AppenderAttachableImpl::getAllAppenders()

{

    thread::MutexGuard guard (appender_list_mutex);

    return appenderList;

}

SharedAppenderPtr

AppenderAttachableImpl::getAppender(const log4cplus::tstring& name)

{

    thread::MutexGuard guard (appender_list_mutex);

    for (SharedAppenderPtr & ptr : appenderList)

    {

        if (ptr->getName() == name)

            return ptr;

    }

    return SharedAppenderPtr ();

}

void

AppenderAttachableImpl::removeAllAppenders()

{

    thread::MutexGuard guard (appender_list_mutex);

    // Clear appenders in specific order because the order of destruction of

    // std::vector elements is surprisingly unspecified and it breaks our

    // tests' expectations.

    for (auto & app : appenderList)

        app = SharedAppenderPtr ();

    appenderList.clear ();

}

void

AppenderAttachableImpl::removeAppender(SharedAppenderPtr appender)

{

    if (! appender)

    {

        getLogLog().warn( LOG4CPLUS_TEXT("Tried to remove NULL appender") );

        return;

    }

    thread::MutexGuard guard (appender_list_mutex);

    auto it = std::find(appenderList.begin(), appenderList.end(), appender);

    if (it != appenderList.end())

    {

        appenderList.erase(it);

    }

}

void

AppenderAttachableImpl::removeAppender(const log4cplus::tstring& name)

{

    removeAppender(getAppender(name));

}

int

AppenderAttachableImpl::appendLoopOnAppenders(const spi::InternalLoggingEvent& event) const

{

    int count = 0;

    thread::MutexGuard guard (appender_list_mutex);

    for (auto & appender : appenderList)

    {

        ++count;

        appender->doAppend(event);

    }

    return count;

}

} // namespace helpers

} // namespace log4cplus