chromium/components/feed/core/v2/view_demotion.cc

// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "components/feed/core/v2/view_demotion.h"

#include <algorithm>
#include <map>
#include <ostream>
#include <tuple>
#include <vector>

#include "base/check_op.h"
#include "base/containers/flat_set.h"
#include "base/feature_list.h"
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/metrics/histogram_functions.h"
#include "base/ranges/algorithm.h"
#include "base/time/time.h"
#include "components/feed/core/proto/v2/store.pb.h"
#include "components/feed/core/v2/config.h"
#include "components/feed/core/v2/feed_store.h"
#include "components/feed/core/v2/feed_stream.h"
#include "components/feed/core/v2/feedstore_util.h"
#include "components/feed/feed_feature_list.h"

namespace feed {
namespace {
base::TimeDelta kMaxViewAge = …;

bool IsEnabled(FeedStream& feed_stream) { … }
}  // namespace

namespace internal {
DocViewDigest CreateDigest(std::vector<feedstore::DocView> all_views) { … }
}  // namespace internal

bool DocViewCount::operator==(const DocViewCount& rhs) const { … }

void ReadDocViewDigestIfEnabled(
    FeedStream& feed_stream,
    base::OnceCallback<void(DocViewDigest)> callback) { … }

void RemoveOldDocViews(const DocViewDigest& doc_view_digest,
                       FeedStore& feed_store) { … }

void WriteDocViewIfEnabled(FeedStream& feed_stream, uint64_t docid) { … }

DocViewDigest::DocViewDigest() = default;
DocViewDigest::~DocViewDigest() = default;
DocViewDigest::DocViewDigest(const DocViewDigest&) = default;
DocViewDigest::DocViewDigest(DocViewDigest&&) = default;
DocViewDigest& DocViewDigest::operator=(const DocViewDigest&) = default;
DocViewDigest& DocViewDigest::operator=(DocViewDigest&&) = default;

std::ostream& operator<<(std::ostream& os, const DocViewCount& doc_view_count) { … }

}  // namespace feed