chromium/components/performance_manager/public/decorators/site_data_recorder.h

// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef COMPONENTS_PERFORMANCE_MANAGER_PUBLIC_DECORATORS_SITE_DATA_RECORDER_H_
#define COMPONENTS_PERFORMANCE_MANAGER_PUBLIC_DECORATORS_SITE_DATA_RECORDER_H_

#include <memory>

#include "base/sequence_checker.h"
#include "components/performance_manager/public/graph/graph.h"
#include "components/performance_manager/public/graph/page_node.h"

namespace performance_manager {

class SiteDataReader;
class SiteDataWriter;
class SiteDataCache;

// Policy class implementing heuristics that are checked by SiteDataRecorder.
// This can be overridden in tests to change the definition of the heuristics,
// for example to ignore timeouts. The default production versions of the
// heuristics are available in static methods.
class SiteDataRecorderHeuristics { … };

// The SiteDataRecorder decorator is responsible for adorning PageNodes with a
// SiteDataReader and a SiteDataWriter and for forwarding the event of interest
// to this writer.
class SiteDataRecorder : public GraphOwned,
                         public PageNode::ObserverDefaultImpl { … };

// Allows retrieving the SiteDataWriter and SiteDataReader associated with a
// PageNode.
class SiteDataRecorder::Data { … };

}  // namespace performance_manager

#endif  // COMPONENTS_PERFORMANCE_MANAGER_PUBLIC_DECORATORS_SITE_DATA_RECORDER_H_