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Add cold-start follow recommendations (#15945)

closed-social-v3
Eugen Rochko 6 months ago
committed by GitHub
parent
commit
f7117646af
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32 changed files with 560 additions and 26 deletions
  1. +53
    -0
      app/controllers/admin/follow_recommendations_controller.rb
  2. +1
    -1
      app/controllers/api/v1/suggestions_controller.rb
  3. +19
    -0
      app/controllers/api/v2/suggestions_controller.rb
  4. +4
    -4
      app/javascript/mastodon/actions/suggestions.js
  5. +6
    -6
      app/javascript/mastodon/features/compose/components/search_results.js
  6. +4
    -4
      app/javascript/mastodon/reducers/suggestions.js
  7. +8
    -4
      app/lib/potential_friendship_tracker.rb
  8. +2
    -1
      app/models/account.rb
  9. +17
    -0
      app/models/account_suggestions.rb
  10. +25
    -0
      app/models/account_summary.rb
  11. +3
    -0
      app/models/concerns/account_associations.rb
  12. +39
    -0
      app/models/follow_recommendation.rb
  13. +26
    -0
      app/models/follow_recommendation_filter.rb
  14. +28
    -0
      app/models/follow_recommendation_suppression.rb
  15. +18
    -0
      app/models/form/account_batch.rb
  16. +15
    -0
      app/policies/follow_recommendation_policy.rb
  17. +7
    -0
      app/serializers/rest/suggestion_serializer.rb
  18. +20
    -0
      app/views/admin/follow_recommendations/_account.html.haml
  19. +42
    -0
      app/views/admin/follow_recommendations/show.html.haml
  20. +61
    -0
      app/workers/scheduler/follow_recommendations_scheduler.rb
  21. +8
    -0
      config/locales/en.yml
  22. +1
    -0
      config/navigation.rb
  23. +2
    -0
      config/routes.rb
  24. +4
    -0
      config/sidekiq.yml
  25. +9
    -0
      db/migrate/20210322164601_create_account_summaries.rb
  26. +5
    -0
      db/migrate/20210323114347_create_follow_recommendations.rb
  27. +9
    -0
      db/migrate/20210324171613_create_follow_recommendation_suppressions.rb
  28. +57
    -6
      db/schema.rb
  29. +22
    -0
      db/views/account_summaries_v01.sql
  30. +38
    -0
      db/views/follow_recommendations_v01.sql
  31. +3
    -0
      spec/fabricators/follow_recommendation_suppression_fabricator.rb
  32. +4
    -0
      spec/models/follow_recommendation_suppression_spec.rb

+ 53
- 0
app/controllers/admin/follow_recommendations_controller.rb View File

@ -0,0 +1,53 @@
# frozen_string_literal: true
module Admin
class FollowRecommendationsController < BaseController
before_action :set_language
def show
authorize :follow_recommendation, :show?
@form = Form::AccountBatch.new
@accounts = filtered_follow_recommendations
end
def update
@form = Form::AccountBatch.new(form_account_batch_params.merge(current_account: current_account, action: action_from_button))
@form.save
rescue ActionController::ParameterMissing
# Do nothing
ensure
redirect_to admin_follow_recommendations_path(filter_params)
end
private
def set_language
@language = follow_recommendation_filter.language
end
def filtered_follow_recommendations
follow_recommendation_filter.results
end
def follow_recommendation_filter
@follow_recommendation_filter ||= FollowRecommendationFilter.new(filter_params)
end
def form_account_batch_params
params.require(:form_account_batch).permit(:action, account_ids: [])
end
def filter_params
params.slice(*FollowRecommendationFilter::KEYS).permit(*FollowRecommendationFilter::KEYS)
end
def action_from_button
if params[:suppress]
'suppress_follow_recommendation'
elsif params[:unsuppress]
'unsuppress_follow_recommendation'
end
end
end
end

+ 1
- 1
app/controllers/api/v1/suggestions_controller.rb View File

@ -19,6 +19,6 @@ class Api::V1::SuggestionsController < Api::BaseController
private
def set_accounts
@accounts = PotentialFriendshipTracker.get(current_account.id, limit: limit_param(DEFAULT_ACCOUNTS_LIMIT))
@accounts = PotentialFriendshipTracker.get(current_account, limit_param(DEFAULT_ACCOUNTS_LIMIT))
end
end

+ 19
- 0
app/controllers/api/v2/suggestions_controller.rb View File

@ -0,0 +1,19 @@
# frozen_string_literal: true
class Api::V2::SuggestionsController < Api::BaseController
include Authorization
before_action -> { doorkeeper_authorize! :read }
before_action :require_user!
before_action :set_suggestions
def index
render json: @suggestions, each_serializer: REST::SuggestionSerializer
end
private
def set_suggestions
@suggestions = AccountSuggestions.get(current_account, limit_param(DEFAULT_ACCOUNTS_LIMIT))
end
end

+ 4
- 4
app/javascript/mastodon/actions/suggestions.js View File

@ -11,8 +11,8 @@ export function fetchSuggestions() {
return (dispatch, getState) => {
dispatch(fetchSuggestionsRequest());
api(getState).get('/api/v1/suggestions').then(response => {
dispatch(importFetchedAccounts(response.data));
api(getState).get('/api/v2/suggestions').then(response => {
dispatch(importFetchedAccounts(response.data.map(x => x.account)));
dispatch(fetchSuggestionsSuccess(response.data));
}).catch(error => dispatch(fetchSuggestionsFail(error)));
};
@ -25,10 +25,10 @@ export function fetchSuggestionsRequest() {
};
};
export function fetchSuggestionsSuccess(accounts) {
export function fetchSuggestionsSuccess(suggestions) {
return {
type: SUGGESTIONS_FETCH_SUCCESS,
accounts,
suggestions,
skipLoading: true,
};
};

+ 6
- 6
app/javascript/mastodon/features/compose/components/search_results.js View File

@ -51,13 +51,13 @@ class SearchResults extends ImmutablePureComponent {
<FormattedMessage id='suggestions.header' defaultMessage='You might be interested in…' />
</div>
{suggestions && suggestions.map(accountId => (
{suggestions && suggestions.map(suggestion => (
<AccountContainer
key={accountId}
id={accountId}
actionIcon='times'
actionTitle={intl.formatMessage(messages.dismissSuggestion)}
onActionClick={dismissSuggestion}
key={suggestion.get('account')}
id={suggestion.get('account')}
actionIcon={suggestion.get('source') === 'past_interaction' && 'times'}
actionTitle={suggestion.get('source') === 'past_interaction' && intl.formatMessage(messages.dismissSuggestion)}
onActionClick={suggestion.get('source') === 'past_interaction' && dismissSuggestion}
/>
))}
</div>

+ 4
- 4
app/javascript/mastodon/reducers/suggestions.js View File

@ -19,18 +19,18 @@ export default function suggestionsReducer(state = initialState, action) {
return state.set('isLoading', true);
case SUGGESTIONS_FETCH_SUCCESS:
return state.withMutations(map => {
map.set('items', fromJS(action.accounts.map(x => x.id)));
map.set('items', fromJS(action.suggestions.map(x => ({ ...x, account: x.account.id }))));
map.set('isLoading', false);
});
case SUGGESTIONS_FETCH_FAIL:
return state.set('isLoading', false);
case SUGGESTIONS_DISMISS:
return state.update('items', list => list.filterNot(id => id === action.id));
return state.update('items', list => list.filterNot(x => x.account === action.id));
case ACCOUNT_BLOCK_SUCCESS:
case ACCOUNT_MUTE_SUCCESS:
return state.update('items', list => list.filterNot(id => id === action.relationship.id));
return state.update('items', list => list.filterNot(x => x.account === action.relationship.id));
case DOMAIN_BLOCK_SUCCESS:
return state.update('items', list => list.filterNot(id => action.accounts.includes(id)));
return state.update('items', list => list.filterNot(x => action.accounts.includes(x.account)));
default:
return state;
}

+ 8
- 4
app/lib/potential_friendship_tracker.rb View File

@ -28,10 +28,14 @@ class PotentialFriendshipTracker
redis.zrem("interactions:#{account_id}", target_account_id)
end
def get(account_id, limit: 20, offset: 0)
account_ids = redis.zrevrange("interactions:#{account_id}", offset, limit)
return [] if account_ids.empty?
Account.searchable.where(id: account_ids)
def get(account, limit)
account_ids = redis.zrevrange("interactions:#{account.id}", 0, limit)
return [] if account_ids.empty? || limit < 1
accounts = Account.searchable.where(id: account_ids).index_by(&:id)
account_ids.map { |id| accounts[id.to_i] }.compact
end
end
end

+ 2
- 1
app/models/account.rb View File

@ -110,6 +110,7 @@ class Account < ApplicationRecord
scope :matches_domain, ->(value) { where(arel_table[:domain].matches("%#{value}%")) }
scope :searchable, -> { without_suspended.where(moved_to_account_id: nil) }
scope :discoverable, -> { searchable.without_silenced.where(discoverable: true).left_outer_joins(:account_stat) }
scope :followable_by, ->(account) { joins(arel_table.join(Follow.arel_table, Arel::Nodes::OuterJoin).on(arel_table[:id].eq(Follow.arel_table[:target_account_id]).and(Follow.arel_table[:account_id].eq(account.id))).join_sources).where(Follow.arel_table[:id].eq(nil)).joins(arel_table.join(FollowRequest.arel_table, Arel::Nodes::OuterJoin).on(arel_table[:id].eq(FollowRequest.arel_table[:target_account_id]).and(FollowRequest.arel_table[:account_id].eq(account.id))).join_sources).where(FollowRequest.arel_table[:id].eq(nil)) }
scope :tagged_with, ->(tag) { joins(:accounts_tags).where(accounts_tags: { tag_id: tag }) }
scope :by_recent_status, -> { order(Arel.sql('(case when account_stats.last_status_at is null then 1 else 0 end) asc, account_stats.last_status_at desc, accounts.id desc')) }
scope :by_recent_sign_in, -> { order(Arel.sql('(case when users.current_sign_in_at is null then 1 else 0 end) asc, users.current_sign_in_at desc, accounts.id desc')) }
@ -363,7 +364,7 @@ class Account < ApplicationRecord
end
def excluded_from_timeline_account_ids
Rails.cache.fetch("exclude_account_ids_for:#{id}") { blocking.pluck(:target_account_id) + blocked_by.pluck(:account_id) + muting.pluck(:target_account_id) }
Rails.cache.fetch("exclude_account_ids_for:#{id}") { block_relationships.pluck(:target_account_id) + blocked_by_relationships.pluck(:account_id) + mute_relationships.pluck(:target_account_id) }
end
def excluded_from_timeline_domains

+ 17
- 0
app/models/account_suggestions.rb View File

@ -0,0 +1,17 @@
# frozen_string_literal: true
class AccountSuggestions
class Suggestion < ActiveModelSerializers::Model
attributes :account, :source
end
def self.get(account, limit)
suggestions = PotentialFriendshipTracker.get(account, limit).map { |target_account| Suggestion.new(account: target_account, source: :past_interaction) }
suggestions.concat(FollowRecommendation.get(account, limit - suggestions.size, suggestions.map { |suggestion| suggestion.account.id }).map { |target_account| Suggestion.new(account: target_account, source: :global) }) if suggestions.size < limit
suggestions
end
def self.remove(account, target_account_id)
PotentialFriendshipTracker.remove(account.id, target_account_id)
end
end

+ 25
- 0
app/models/account_summary.rb View File

@ -0,0 +1,25 @@
# frozen_string_literal: true
# == Schema Information
#
# Table name: account_summaries
#
# account_id :bigint(8) primary key
# language :string
# sensitive :boolean
#
class AccountSummary < ApplicationRecord
self.primary_key = :account_id
scope :safe, -> { where(sensitive: false) }
scope :localized, ->(locale) { where(language: locale) }
scope :filtered, -> { joins(arel_table.join(FollowRecommendationSuppression.arel_table, Arel::Nodes::OuterJoin).on(arel_table[:account_id].eq(FollowRecommendationSuppression.arel_table[:account_id])).join_sources).where(FollowRecommendationSuppression.arel_table[:id].eq(nil)) }
def self.refresh
Scenic.database.refresh_materialized_view(table_name, concurrently: true, cascade: false)
end
def readonly?
true
end
end

+ 3
- 0
app/models/concerns/account_associations.rb View File

@ -63,5 +63,8 @@ module AccountAssociations
# Account deletion requests
has_one :deletion_request, class_name: 'AccountDeletionRequest', inverse_of: :account, dependent: :destroy
# Follow recommendations
has_one :follow_recommendation_suppression, inverse_of: :account, dependent: :destroy
end
end

+ 39
- 0
app/models/follow_recommendation.rb View File

@ -0,0 +1,39 @@
# frozen_string_literal: true
# == Schema Information
#
# Table name: follow_recommendations
#
# account_id :bigint(8) primary key
# rank :decimal(, )
# reason :text is an Array
#
class FollowRecommendation < ApplicationRecord
self.primary_key = :account_id
belongs_to :account_summary, foreign_key: :account_id
belongs_to :account, foreign_key: :account_id
scope :safe, -> { joins(:account_summary).merge(AccountSummary.safe) }
scope :localized, ->(locale) { joins(:account_summary).merge(AccountSummary.localized(locale)) }
scope :filtered, -> { joins(:account_summary).merge(AccountSummary.filtered) }
def readonly?
true
end
def self.get(account, limit, exclude_account_ids = [])
account_ids = Redis.current.zrevrange("follow_recommendations:#{account.user_locale}", 0, -1).map(&:to_i) - exclude_account_ids - [account.id]
return [] if account_ids.empty? || limit < 1
accounts = Account.followable_by(account)
.not_excluded_by_account(account)
.not_domain_blocked_by_account(account)
.where(id: account_ids)
.limit(limit)
.index_by(&:id)
account_ids.map { |id| accounts[id] }.compact
end
end

+ 26
- 0
app/models/follow_recommendation_filter.rb View File

@ -0,0 +1,26 @@
# frozen_string_literal: true
class FollowRecommendationFilter
KEYS = %i(
language
status
).freeze
attr_reader :params, :language
def initialize(params)
@language = params.delete('language') || I18n.locale
@params = params
end
def results
if params['status'] == 'suppressed'
Account.joins(:follow_recommendation_suppression).order(FollowRecommendationSuppression.arel_table[:id].desc).to_a
else
account_ids = Redis.current.zrevrange("follow_recommendations:#{@language}", 0, -1).map(&:to_i)
accounts = Account.where(id: account_ids).index_by(&:id)
account_ids.map { |id| accounts[id] }.compact
end
end
end

+ 28
- 0
app/models/follow_recommendation_suppression.rb View File

@ -0,0 +1,28 @@
# frozen_string_literal: true
# == Schema Information
#
# Table name: follow_recommendation_suppressions
#
# id :bigint(8) not null, primary key
# account_id :bigint(8) not null
# created_at :datetime not null
# updated_at :datetime not null
#
class FollowRecommendationSuppression < ApplicationRecord
include Redisable
belongs_to :account
after_commit :remove_follow_recommendations, on: :create
private
def remove_follow_recommendations
redis.pipelined do
I18n.available_locales.each do |locale|
redis.zrem("follow_recommendations:#{locale}", account_id)
end
end
end
end

+ 18
- 0
app/models/form/account_batch.rb View File

@ -21,6 +21,10 @@ class Form::AccountBatch
approve!
when 'reject'
reject!
when 'suppress_follow_recommendation'
suppress_follow_recommendation!
when 'unsuppress_follow_recommendation'
unsuppress_follow_recommendation!
end
end
@ -79,4 +83,18 @@ class Form::AccountBatch
records.each { |account| authorize(account.user, :reject?) }
.each { |account| DeleteAccountService.new.call(account, reserve_email: false, reserve_username: false) }
end
def suppress_follow_recommendation!
authorize(:follow_recommendation, :suppress?)
accounts.each do |account|
FollowRecommendationSuppression.create(account: account)
end
end
def unsuppress_follow_recommendation!
authorize(:follow_recommendation, :unsuppress?)
FollowRecommendationSuppression.where(account_id: account_ids).destroy_all
end
end

+ 15
- 0
app/policies/follow_recommendation_policy.rb View File

@ -0,0 +1,15 @@
# frozen_string_literal: true
class FollowRecommendationPolicy < ApplicationPolicy
def show?
staff?
end
def suppress?
staff?
end
def unsuppress?
staff?
end
end

+ 7
- 0
app/serializers/rest/suggestion_serializer.rb View File

@ -0,0 +1,7 @@
# frozen_string_literal: true
class REST::SuggestionSerializer < ActiveModel::Serializer
attributes :source
has_one :account, serializer: REST::AccountSerializer
end

+ 20
- 0
app/views/admin/follow_recommendations/_account.html.haml View File

@ -0,0 +1,20 @@
.batch-table__row
%label.batch-table__row__select.batch-table__row__select--aligned.batch-checkbox
= f.check_box :account_ids, { multiple: true, include_hidden: false }, account.id
.batch-table__row__content.batch-table__row__content--unpadded
%table.accounts-table
%tbody
%tr
%td= account_link_to account
%td.accounts-table__count.optional
= number_to_human account.statuses_count, strip_insignificant_zeros: true
%small= t('accounts.posts', count: account.statuses_count).downcase
%td.accounts-table__count.optional
= number_to_human account.followers_count, strip_insignificant_zeros: true
%small= t('accounts.followers', count: account.followers_count).downcase
%td.accounts-table__count
- if account.last_status_at.present?
%time.time-ago{ datetime: account.last_status_at.to_date.iso8601, title: l(account.last_status_at.to_date) }= l account.last_status_at
- else
\-
%small= t('accounts.last_active')

+ 42
- 0
app/views/admin/follow_recommendations/show.html.haml View File

@ -0,0 +1,42 @@
- content_for :page_title do
= t('admin.follow_recommendations.title')
- content_for :header_tags do
= javascript_pack_tag 'admin', async: true, crossorigin: 'anonymous'
.simple_form
%p.hint= t('admin.follow_recommendations.description_html')
%hr.spacer/
= form_tag admin_follow_recommendations_path, method: 'GET', class: 'simple_form' do
.filters
.filter-subset.filter-subset--with-select
%strong= t('admin.follow_recommendations.language')
.input.select.optional
= select_tag :language, options_for_select(I18n.available_locales.map { |key| [human_locale(key), key]}, @language)
.filter-subset
%strong= t('admin.follow_recommendations.status')
%ul
%li= filter_link_to t('admin.accounts.moderation.active'), status: nil
%li= filter_link_to t('admin.follow_recommendations.suppressed'), status: 'suppressed'
= form_for(@form, url: admin_follow_recommendations_path, method: :patch) do |f|
- RelationshipFilter::KEYS.each do |key|
= hidden_field_tag key, params[key] if params[key].present?
.batch-table
.batch-table__toolbar
%label.batch-table__toolbar__select.batch-checkbox-all
= check_box_tag :batch_checkbox_all, nil, false
.batch-table__toolbar__actions
- if params[:status].blank? && can?(:suppress, :follow_recommendation)
= f.button safe_join([fa_icon('times'), t('admin.follow_recommendations.suppress')]), name: :suppress, class: 'table-action-link', type: :submit, data: { confirm: t('admin.reports.are_you_sure') }
- if params[:status] == 'suppressed' && can?(:unsuppress, :follow_recommendation)
= f.button safe_join([fa_icon('plus'), t('admin.follow_recommendations.unsuppress')]), name: :unsuppress, class: 'table-action-link', type: :submit
.batch-table__body
- if @accounts.empty?
= nothing_here 'nothing-here--under-tabs'
- else
= render partial: 'account', collection: @accounts, locals: { f: f }

+ 61
- 0
app/workers/scheduler/follow_recommendations_scheduler.rb View File

@ -0,0 +1,61 @@
# frozen_string_literal: true
class Scheduler::FollowRecommendationsScheduler
include Sidekiq::Worker
include Redisable
sidekiq_options retry: 0
# The maximum number of accounts that can be requested in one page from the
# API is 80, and the suggestions API does not allow pagination. This number
# leaves some room for accounts being filtered during live access
SET_SIZE = 100
def perform
# Maintaining a materialized view speeds-up subsequent queries significantly
AccountSummary.refresh
fallback_recommendations = FollowRecommendation.safe.filtered.limit(SET_SIZE).index_by(&:account_id)
I18n.available_locales.each do |locale|
recommendations = begin
if AccountSummary.safe.filtered.localized(locale).exists? # We can skip the work if no accounts with that language exist
FollowRecommendation.safe.filtered.localized(locale).limit(SET_SIZE).index_by(&:account_id)
else
{}
end
end
# Use language-agnostic results if there are not enough language-specific ones
missing = SET_SIZE - recommendations.keys.size
if missing.positive?
added = 0
# Avoid duplicate results
fallback_recommendations.each_value do |recommendation|
next if recommendations.key?(recommendation.account_id)
recommendations[recommendation.account_id] = recommendation
added += 1
break if added >= missing
end
end
redis.pipelined do
redis.del(key(locale))
recommendations.each_value do |recommendation|
redis.zadd(key(locale), recommendation.rank, recommendation.account_id)
end
end
end
end
private
def key(locale)
"follow_recommendations:#{locale}"
end
end

+ 8
- 0
config/locales/en.yml View File

@ -440,6 +440,14 @@ en:
create: Add domain
title: Block new e-mail domain
title: Blocked e-mail domains
follow_recommendations:
description_html: "<strong>Follow recommendations help new users quickly find interesting content</strong>. When a user has not interacted with others enough to form personalized follow recommendations, these accounts are recommended instead. They are re-calculated on a daily basis from a mix of accounts with the highest recent engagements and highest local follower counts for a given language."
language: For language
status: Status
suppress: Suppress follow recommendation
suppressed: Suppressed
title: Follow recommendations
unsuppress: Restore follow recommendation
instances:
by_domain: Domain
delivery_available: Delivery is available

+ 1
- 0
config/navigation.rb View File

@ -39,6 +39,7 @@ SimpleNavigation::Configuration.run do |navigation|
s.item :accounts, safe_join([fa_icon('users fw'), t('admin.accounts.title')]), admin_accounts_url, highlights_on: %r{/admin/accounts|/admin/pending_accounts}
s.item :invites, safe_join([fa_icon('user-plus fw'), t('admin.invites.title')]), admin_invites_path
s.item :tags, safe_join([fa_icon('hashtag fw'), t('admin.tags.title')]), admin_tags_path, highlights_on: %r{/admin/tags}
s.item :follow_recommendations, safe_join([fa_icon('user-plus fw'), t('admin.follow_recommendations.title')]), admin_follow_recommendations_path, highlights_on: %r{/admin/follow_recommendations}
s.item :instances, safe_join([fa_icon('cloud fw'), t('admin.instances.title')]), admin_instances_url(limited: whitelist_mode? ? nil : '1'), highlights_on: %r{/admin/instances|/admin/domain_blocks|/admin/domain_allows}, if: -> { current_user.admin? }
s.item :email_domain_blocks, safe_join([fa_icon('envelope fw'), t('admin.email_domain_blocks.title')]), admin_email_domain_blocks_url, highlights_on: %r{/admin/email_domain_blocks}, if: -> { current_user.admin? }
s.item :ip_blocks, safe_join([fa_icon('ban fw'), t('admin.ip_blocks.title')]), admin_ip_blocks_url, highlights_on: %r{/admin/ip_blocks}, if: -> { current_user.admin? }

+ 2
- 0
config/routes.rb View File

@ -292,6 +292,7 @@ Rails.application.routes.draw do
end
resources :account_moderation_notes, only: [:create, :destroy]
resource :follow_recommendations, only: [:show, :update]
resources :tags, only: [:index, :show, :update] do
collection do
@ -507,6 +508,7 @@ Rails.application.routes.draw do
namespace :v2 do
resources :media, only: [:create]
get '/search', to: 'search#index', as: :search
resources :suggestions, only: [:index]
end
namespace :web do

+ 4
- 0
config/sidekiq.yml View File

@ -25,6 +25,10 @@
cron: '<%= Random.rand(0..59) %> <%= Random.rand(0..2) %> * * *'
class: Scheduler::FeedCleanupScheduler
queue: scheduler
follow_recommendations_scheduler:
cron: '<%= Random.rand(0..59) %> <%= Random.rand(6..9) %> * * *'
class: Scheduler::FollowRecommendationsScheduler
queue: scheduler
doorkeeper_cleanup_scheduler:
cron: '<%= Random.rand(0..59) %> <%= Random.rand(0..2) %> * * 0'
class: Scheduler::DoorkeeperCleanupScheduler

+ 9
- 0
db/migrate/20210322164601_create_account_summaries.rb View File

@ -0,0 +1,9 @@
class CreateAccountSummaries < ActiveRecord::Migration[5.2]
def change
create_view :account_summaries, materialized: true
# To be able to refresh the view concurrently,
# at least one unique index is required
safety_assured { add_index :account_summaries, :account_id, unique: true }
end
end

+ 5
- 0
db/migrate/20210323114347_create_follow_recommendations.rb View File

@ -0,0 +1,5 @@
class CreateFollowRecommendations < ActiveRecord::Migration[5.2]
def change
create_view :follow_recommendations
end
end

+ 9
- 0
db/migrate/20210324171613_create_follow_recommendation_suppressions.rb View File

@ -0,0 +1,9 @@
class CreateFollowRecommendationSuppressions < ActiveRecord::Migration[6.1]
def change
create_table :follow_recommendation_suppressions do |t|
t.references :account, null: false, foreign_key: { on_delete: :cascade }, index: { unique: true }
t.timestamps
end
end
end

+ 57
- 6
db/schema.rb View File

@ -2,15 +2,15 @@
# of editing this file, please use the migrations feature of Active Record to
# incrementally modify your database, and then regenerate this schema definition.
#
# Note that this schema.rb definition is the authoritative source for your
# database schema. If you need to create the application database on another
# system, you should be using db:schema:load, not running all the migrations
# from scratch. The latter is a flawed and unsustainable approach (the more migrations
# you'll amass, the slower it'll run and the greater likelihood for issues).
# This file is the source Rails uses to define your schema when running `bin/rails
# db:schema:load`. When creating a new database, `bin/rails db:schema:load` tends to
# be faster and is potentially less error prone than running all of your
# migrations from scratch. Old migrations may fail to apply correctly if those
# migrations use external dependencies or application code.
#
# It's strongly recommended that you check this file into your version control system.
ActiveRecord::Schema.define(version: 2021_03_08_133107) do
ActiveRecord::Schema.define(version: 2021_03_24_171613) do
# These are extensions that must be enabled in order to support this database
enable_extension "plpgsql"
@ -406,6 +406,13 @@ ActiveRecord::Schema.define(version: 2021_03_08_133107) do
t.index ["tag_id"], name: "index_featured_tags_on_tag_id"
end
create_table "follow_recommendation_suppressions", force: :cascade do |t|
t.bigint "account_id", null: false
t.datetime "created_at", precision: 6, null: false
t.datetime "updated_at", precision: 6, null: false
t.index ["account_id"], name: "index_follow_recommendation_suppressions_on_account_id", unique: true
end
create_table "follow_requests", force: :cascade do |t|
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
@ -996,6 +1003,7 @@ ActiveRecord::Schema.define(version: 2021_03_08_133107) do
add_foreign_key "favourites", "statuses", name: "fk_b0e856845e", on_delete: :cascade
add_foreign_key "featured_tags", "accounts", on_delete: :cascade
add_foreign_key "featured_tags", "tags", on_delete: :cascade
add_foreign_key "follow_recommendation_suppressions", "accounts", on_delete: :cascade
add_foreign_key "follow_requests", "accounts", column: "target_account_id", name: "fk_9291ec025d", on_delete: :cascade
add_foreign_key "follow_requests", "accounts", name: "fk_76d644b0e7", on_delete: :cascade
add_foreign_key "follows", "accounts", column: "target_account_id", name: "fk_745ca29eac", on_delete: :cascade
@ -1079,4 +1087,47 @@ ActiveRecord::Schema.define(version: 2021_03_08_133107) do
SQL
add_index "instances", ["domain"], name: "index_instances_on_domain", unique: true
create_view "account_summaries", materialized: true, sql_definition: <<-SQL
SELECT accounts.id AS account_id,
mode() WITHIN GROUP (ORDER BY t0.language) AS language,
mode() WITHIN GROUP (ORDER BY t0.sensitive) AS sensitive
FROM (accounts
CROSS JOIN LATERAL ( SELECT statuses.account_id,
statuses.language,
statuses.sensitive
FROM statuses
WHERE ((statuses.account_id = accounts.id) AND (statuses.deleted_at IS NULL))
ORDER BY statuses.id DESC
LIMIT 20) t0)
WHERE ((accounts.suspended_at IS NULL) AND (accounts.silenced_at IS NULL) AND (accounts.moved_to_account_id IS NULL) AND (accounts.discoverable = true) AND (accounts.locked = false))
GROUP BY accounts.id;
SQL
add_index "account_summaries", ["account_id"], name: "index_account_summaries_on_account_id", unique: true
create_view "follow_recommendations", sql_definition: <<-SQL
SELECT t0.account_id,
sum(t0.rank) AS rank,
array_agg(t0.reason) AS reason
FROM ( SELECT accounts.id AS account_id,
((count(follows.id))::numeric / (1.0 + (count(follows.id))::numeric)) AS rank,
'most_followed'::text AS reason
FROM ((follows
JOIN accounts ON ((accounts.id = follows.target_account_id)))
JOIN users ON ((users.account_id = follows.account_id)))
WHERE ((users.current_sign_in_at >= (now() - 'P30D'::interval)) AND (accounts.suspended_at IS NULL) AND (accounts.moved_to_account_id IS NULL) AND (accounts.silenced_at IS NULL) AND (accounts.locked = false) AND (accounts.discoverable = true))
GROUP BY accounts.id
HAVING (count(follows.id) >= 5)
UNION ALL
SELECT accounts.id AS account_id,
(sum((status_stats.reblogs_count + status_stats.favourites_count)) / (1.0 + sum((status_stats.reblogs_count + status_stats.favourites_count)))) AS rank,
'most_interactions'::text AS reason
FROM ((status_stats
JOIN statuses ON ((statuses.id = status_stats.status_id)))
JOIN accounts ON ((accounts.id = statuses.account_id)))
WHERE ((statuses.id >= (((date_part('epoch'::text, (now() - 'P30D'::interval)) * (1000)::double precision))::bigint << 16)) AND (accounts.suspended_at IS NULL) AND (accounts.moved_to_account_id IS NULL) AND (accounts.silenced_at IS NULL) AND (accounts.locked = false) AND (accounts.discoverable = true))
GROUP BY accounts.id
HAVING (sum((status_stats.reblogs_count + status_stats.favourites_count)) >= (5)::numeric)) t0
GROUP BY t0.account_id
ORDER BY (sum(t0.rank)) DESC;
SQL
end

+ 22
- 0
db/views/account_summaries_v01.sql View File

@ -0,0 +1,22 @@
SELECT
accounts.id AS account_id,
mode() WITHIN GROUP (ORDER BY language ASC) AS language,
mode() WITHIN GROUP (ORDER BY sensitive ASC) AS sensitive
FROM accounts
CROSS JOIN LATERAL (
SELECT
statuses.account_id,
statuses.language,
statuses.sensitive
FROM statuses
WHERE statuses.account_id = accounts.id
AND statuses.deleted_at IS NULL
ORDER BY statuses.id DESC
LIMIT 20
) t0
WHERE accounts.suspended_at IS NULL
AND accounts.silenced_at IS NULL
AND accounts.moved_to_account_id IS NULL
AND accounts.discoverable = 't'
AND accounts.locked = 'f'
GROUP BY accounts.id

+ 38
- 0
db/views/follow_recommendations_v01.sql View File

@ -0,0 +1,38 @@
SELECT
account_id,
sum(rank) AS rank,
array_agg(reason) AS reason
FROM (
SELECT
accounts.id AS account_id,
count(follows.id) / (1.0 + count(follows.id)) AS rank,
'most_followed' AS reason
FROM follows
INNER JOIN accounts ON accounts.id = follows.target_account_id
INNER JOIN users ON users.account_id = follows.account_id
WHERE users.current_sign_in_at >= (now() - interval '30 days')
AND accounts.suspended_at IS NULL
AND accounts.moved_to_account_id IS NULL
AND accounts.silenced_at IS NULL
AND accounts.locked = 'f'
AND accounts.discoverable = 't'
GROUP BY accounts.id
HAVING count(follows.id) >= 5
UNION ALL
SELECT accounts.id AS account_id,
sum(reblogs_count + favourites_count) / (1.0 + sum(reblogs_count + favourites_count)) AS rank,
'most_interactions' AS reason
FROM status_stats
INNER JOIN statuses ON statuses.id = status_stats.status_id
INNER JOIN accounts ON accounts.id = statuses.account_id
WHERE statuses.id >= ((date_part('epoch', now() - interval '30 days') * 1000)::bigint << 16)
AND accounts.suspended_at IS NULL
AND accounts.moved_to_account_id IS NULL
AND accounts.silenced_at IS NULL
AND accounts.locked = 'f'
AND accounts.discoverable = 't'
GROUP BY accounts.id
HAVING sum(reblogs_count + favourites_count) >= 5
) t0
GROUP BY account_id
ORDER BY rank DESC

+ 3
- 0
spec/fabricators/follow_recommendation_suppression_fabricator.rb View File

@ -0,0 +1,3 @@
Fabricator(:follow_recommendation_suppression) do
account
end

+ 4
- 0
spec/models/follow_recommendation_suppression_spec.rb View File

@ -0,0 +1,4 @@
require 'rails_helper'
RSpec.describe FollowRecommendationSuppression, type: :model do
end

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