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// Copyright 2017 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_METRICS_METRICS_COLLECTOR_H_
#define COMPONENTS_PERFORMANCE_MANAGER_PUBLIC_METRICS_METRICS_COLLECTOR_H_
#include "base/time/time.h"
#include "components/performance_manager/public/graph/graph.h"
#include "components/performance_manager/public/graph/page_node.h"
#include "components/performance_manager/public/graph/process_node.h"
#include "services/metrics/public/cpp/ukm_builders.h"
#include "services/metrics/public/cpp/ukm_source_id.h"
#include "url/gurl.h"
namespace performance_manager {
extern const base::TimeDelta kMetricsReportDelayTimeout;
extern const int kDefaultFrequencyUkmEQTReported;
// The MetricsCollector is a graph observer that reports UMA/UKM.
class MetricsCollector : public GraphOwned,
public PageNodeObserver,
public ProcessNodeObserver {
public:
MetricsCollector();
MetricsCollector(const MetricsCollector&) = delete;
MetricsCollector& operator=(const MetricsCollector&) = delete;
~MetricsCollector() override;
// GraphOwned implementation:
void OnPassedToGraph(Graph* graph) override;
void OnTakenFromGraph(Graph* graph) override;
// PageNodeObserver implementation:
void OnUkmSourceIdChanged(const PageNode* page_node) override;
void OnMainFrameDocumentChanged(const PageNode* page_node) override;
// ProcessNodeObserver implementation:
void OnProcessLifetimeChange(const ProcessNode* process_node) override;
void OnBeforeProcessNodeRemoved(const ProcessNode* process_node) override;
protected:
friend class MetricsReportRecordHolder;
friend class UkmCollectionStateHolder;
struct MetricsReportRecord {
MetricsReportRecord();
MetricsReportRecord(const MetricsReportRecord& other);
GURL previous_url;
};
struct UkmCollectionState {
ukm::SourceId ukm_source_id = ukm::kInvalidSourceId;
};
private:
static MetricsReportRecord* GetMetricsReportRecord(const PageNode* page_node);
static UkmCollectionState* GetUkmCollectionState(const PageNode* page_node);
// (Un)registers the various node observer flavors of this object with the
// graph. These are invoked by OnPassedToGraph and OnTakenFromGraph, but
// hoisted to their own functions for testing.
void RegisterObservers(Graph* graph);
void UnregisterObservers(Graph* graph);
bool ShouldReportMetrics(const PageNode* page_node);
void UpdateUkmSourceIdForPage(const PageNode* page_node,
ukm::SourceId ukm_source_id);
void OnProcessDestroyed(const ProcessNode* process_node);
};
} // namespace performance_manager
#endif // COMPONENTS_PERFORMANCE_MANAGER_PUBLIC_METRICS_METRICS_COLLECTOR_H_
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