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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/proximity_auth/logging/log_buffer.h"
#include "base/lazy_instance.h"
namespace proximity_auth {
namespace {
// The maximum number of logs that can be stored in the buffer.
const size_t kMaxBufferSize = 1000;
// The global instance returned by LogBuffer::GetInstance().
base::LazyInstance<LogBuffer>::Leaky g_log_buffer = LAZY_INSTANCE_INITIALIZER;
} // namespace
LogBuffer::LogMessage::LogMessage(const std::string& text,
const base::Time& time,
const std::string& file,
const int line,
logging::LogSeverity severity)
: text(text), time(time), file(file), line(line), severity(severity) {
}
LogBuffer::LogBuffer() {
}
LogBuffer::~LogBuffer() {
}
// static
LogBuffer* LogBuffer::GetInstance() {
return &g_log_buffer.Get();
}
void LogBuffer::AddObserver(Observer* observer) {
observers_.AddObserver(observer);
}
void LogBuffer::RemoveObserver(Observer* observer) {
observers_.RemoveObserver(observer);
}
void LogBuffer::AddLogMessage(const LogMessage& log_message) {
// Note: We may want to sort the messages by timestamp if there are cases
// where logs are not added chronologically.
log_messages_.push_back(log_message);
if (log_messages_.size() > MaxBufferSize())
log_messages_.pop_front();
for (auto& observer : observers_)
observer.OnLogMessageAdded(log_message);
}
void LogBuffer::Clear() {
log_messages_.clear();
for (auto& observer : observers_)
observer.OnLogBufferCleared();
}
size_t LogBuffer::MaxBufferSize() const {
return kMaxBufferSize;
}
} // proximity_auth
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