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/**
* Copyright (C) 2018-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the Server Side Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#pragma once
#include <algorithm>
#include <cstdlib>
#include "mongo/base/status.h"
#include "mongo/logger/log_domain.h"
/*
* Implementation of LogDomain<E>. Include this in cpp files to instantiate new LogDomain types.
* See message_log_domain.h, e.g.
*/
namespace mongo {
namespace logger {
template <typename E>
LogDomain<E>::LogDomain() : _abortOnFailure(false) {}
template <typename E>
LogDomain<E>::~LogDomain() {}
template <typename E>
Status LogDomain<E>::append(const E& event) {
for (auto& appender : _appenders) {
if (appender) {
Status status = appender->append(event);
if (!status.isOK()) {
if (_abortOnFailure) {
::abort();
}
return status;
}
}
}
return Status::OK();
}
template <typename E>
auto LogDomain<E>::attachAppender(std::unique_ptr<EventAppender> appender) -> AppenderHandle {
const auto isValidPred = [](auto& appender) -> bool { return !appender; };
auto iter = std::find_if(_appenders.begin(), _appenders.end(), isValidPred);
if (iter == _appenders.end()) {
_appenders.emplace_back(std::move(appender));
return AppenderHandle(_appenders.size() - 1);
}
iter->swap(appender);
return AppenderHandle(iter - _appenders.begin());
}
template <typename E>
auto LogDomain<E>::detachAppender(AppenderHandle handle) -> std::unique_ptr<EventAppender> {
// So technically this could just return a moved unique_ptr reference
// Still, eliding is a thing so swap is a nice certainty.
std::unique_ptr<EventAppender> appender;
using std::swap;
swap(appender, _appenders.at(handle._index));
return appender;
}
template <typename E>
void LogDomain<E>::clearAppenders() {
_appenders.clear();
}
} // namespace logger
} // namespace mongo
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