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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef STORAGE_BROWSER_QUOTA_QUOTA_TEMPORARY_STORAGE_EVICTOR_H_
#define STORAGE_BROWSER_QUOTA_QUOTA_TEMPORARY_STORAGE_EVICTOR_H_
#include <stdint.h>
#include <map>
#include <optional>
#include <set>
#include <string>
#include "base/component_export.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/sequence_checker.h"
#include "base/time/time.h"
#include "base/timer/timer.h"
#include "components/services/storage/public/cpp/buckets/bucket_locator.h"
#include "third_party/blink/public/mojom/quota/quota_types.mojom.h"
namespace storage {
class QuotaEvictionHandler;
enum class QuotaError;
struct QuotaSettings;
class COMPONENT_EXPORT(STORAGE_BROWSER) QuotaTemporaryStorageEvictor {
public:
struct Statistics {
int64_t num_errors_on_getting_usage_and_quota = 0;
int64_t num_evicted_buckets = 0;
int64_t num_eviction_rounds = 0;
int64_t num_skipped_eviction_rounds = 0;
void subtract_assign(const Statistics& rhs) {
num_errors_on_getting_usage_and_quota -=
rhs.num_errors_on_getting_usage_and_quota;
num_evicted_buckets -= rhs.num_evicted_buckets;
num_eviction_rounds -= rhs.num_eviction_rounds;
num_skipped_eviction_rounds -= rhs.num_skipped_eviction_rounds;
}
};
struct EvictionRoundStatistics {
bool in_round = false;
bool is_initialized = false;
base::Time start_time;
int64_t diskspace_shortage_at_round = -1;
int64_t usage_on_beginning_of_round = -1;
int64_t usage_on_end_of_round = -1;
int64_t num_evicted_buckets = 0;
};
QuotaTemporaryStorageEvictor(QuotaEvictionHandler* quota_eviction_handler,
base::TimeDelta interval);
QuotaTemporaryStorageEvictor(const QuotaTemporaryStorageEvictor&) = delete;
QuotaTemporaryStorageEvictor& operator=(const QuotaTemporaryStorageEvictor&) =
delete;
~QuotaTemporaryStorageEvictor();
void GetStatistics(std::map<std::string, int64_t>* statistics);
void ReportPerRoundHistogram();
void ReportPerHourHistogram();
void Start();
bool in_round() const { return round_statistics_.in_round; }
private:
friend class QuotaTemporaryStorageEvictorTest;
void StartEvictionTimerWithDelay(base::TimeDelta delay);
void ConsiderEviction();
void OnEvictedExpiredBuckets(blink::mojom::QuotaStatusCode status);
void OnGotEvictionRoundInfo(blink::mojom::QuotaStatusCode status,
const QuotaSettings& settings,
int64_t available_space,
int64_t total_space,
int64_t current_usage,
bool current_usage_is_complete);
void OnGotEvictionBuckets(const std::set<BucketLocator>& buckets);
void OnEvictionComplete(int expected_evicted_buckets,
int actual_evicted_buckets);
void OnEvictionRoundStarted();
void OnEvictionRoundFinished();
// Not owned; quota_eviction_handler owns us.
raw_ptr<QuotaEvictionHandler> quota_eviction_handler_;
Statistics statistics_;
Statistics previous_statistics_;
EvictionRoundStatistics round_statistics_;
base::Time time_of_end_of_last_nonskipped_round_;
base::TimeDelta interval_;
bool timer_disabled_for_testing_ = false;
base::RepeatingClosure on_round_finished_for_testing_;
base::OneShotTimer eviction_timer_;
base::RepeatingTimer histogram_timer_;
SEQUENCE_CHECKER(sequence_checker_);
base::WeakPtrFactory<QuotaTemporaryStorageEvictor> weak_factory_{this};
};
} // namespace storage
#endif // STORAGE_BROWSER_QUOTA_QUOTA_TEMPORARY_STORAGE_EVICTOR_H_
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