/*
* Copyright 2002, Log4cpp Project. All rights reserved.
*
* See the COPYING file for the terms of usage and distribution.
*/
#include "PortabilityImpl.hh"
#include <algorithm>
#include <log4cpp/BufferingAppender.hh>
#include <memory>
#include <sstream>
namespace log4cpp {
BufferingAppender::BufferingAppender(const std::string name, unsigned long max_size,
std::LOG4CPP_UNIQUE_PTR<Appender> sink,
std::LOG4CPP_UNIQUE_PTR<TriggeringEventEvaluator> evaluator)
: LayoutAppender(name), max_size_(max_size), sink_(LOG4CPP_UNIQUE_PTR_MOVE(sink)),
evaluator_(LOG4CPP_UNIQUE_PTR_MOVE(evaluator)), lossy_(false) {
max_size_ = (max)(1UL, max_size_);
}
void BufferingAppender::_append(const LoggingEvent& event) {
if (queue_.size() == max_size_) {
if (lossy_)
queue_.pop_back();
else
dump();
}
queue_.push_front(event);
if (evaluator_->eval(event)) {
dump();
queue_.clear();
}
}
static const std::string EMPTY;
void BufferingAppender::dump() {
Layout& layout = _getLayout();
std::ostringstream s;
// Solaris 10 CC can't work with const_reverse_iterator
for (queue_t::reverse_iterator i = queue_.rbegin(), last = queue_.rend(); i != last; ++i)
s << layout.format(*i);
LoggingEvent event(EMPTY, s.str(), EMPTY, Priority::NOTSET);
sink_->doAppend(event);
}
} // namespace log4cpp
