Commit 3babf846 authored by ThibG's avatar ThibG Committed by Eugen Rochko

Add voters count support (#11917)

* Add voters count to polls

* Add ActivityPub serialization and parsing of voters count

* Add support for voters count in WebUI

* Move incrementation of voters count out of redis lock

* Reword “voters” to “people”
parent cfe2d1cc
......@@ -102,10 +102,11 @@ class Poll extends ImmutablePureComponent {
renderOption (option, optionIndex, showResults) {
const { poll, disabled, intl } = this.props;
const percent = poll.get('votes_count') === 0 ? 0 : (option.get('votes_count') / poll.get('votes_count')) * 100;
const leading = poll.get('options').filterNot(other => other.get('title') === option.get('title')).every(other => option.get('votes_count') >= other.get('votes_count'));
const active = !!this.state.selected[`${optionIndex}`];
const voted = option.get('voted') || (poll.get('own_votes') && poll.get('own_votes').includes(optionIndex));
const pollVotesCount = poll.get('voters_count') || poll.get('votes_count');
const percent = pollVotesCount === 0 ? 0 : (option.get('votes_count') / pollVotesCount) * 100;
const leading = poll.get('options').filterNot(other => other.get('title') === option.get('title')).every(other => option.get('votes_count') >= other.get('votes_count'));
const active = !!this.state.selected[`${optionIndex}`];
const voted = option.get('voted') || (poll.get('own_votes') && poll.get('own_votes').includes(optionIndex));
let titleEmojified = option.get('title_emojified');
if (!titleEmojified) {
......@@ -157,6 +158,14 @@ class Poll extends ImmutablePureComponent {
const showResults = poll.get('voted') || expired;
const disabled = this.props.disabled || Object.entries(this.state.selected).every(item => !item);
let votesCount = null;
if (poll.get('voters_count') !== null && poll.get('voters_count') !== undefined) {
votesCount = <FormattedMessage id='poll.total_people' defaultMessage='{count, plural, one {# person} other {# people}}' values={{ count: poll.get('voters_count') }} />;
} else {
votesCount = <FormattedMessage id='poll.total_votes' defaultMessage='{count, plural, one {# vote} other {# votes}}' values={{ count: poll.get('votes_count') }} />;
}
return (
<div className='poll'>
<ul>
......@@ -166,7 +175,7 @@ class Poll extends ImmutablePureComponent {
<div className='poll__footer'>
{!showResults && <button className='button button-secondary' disabled={disabled} onClick={this.handleVote}><FormattedMessage id='poll.vote' defaultMessage='Vote' /></button>}
{showResults && !this.props.disabled && <span><button className='poll__link' onClick={this.handleRefresh}><FormattedMessage id='poll.refresh' defaultMessage='Refresh' /></button> · </span>}
<FormattedMessage id='poll.total_votes' defaultMessage='{count, plural, one {# vote} other {# votes}}' values={{ count: poll.get('votes_count') }} />
{votesCount}
{poll.get('expires_at') && <span> · {timeRemaining}</span>}
</div>
</div>
......
......@@ -232,25 +232,40 @@ class ActivityPub::Activity::Create < ActivityPub::Activity
items = @object['oneOf']
end
voters_count = @object['votersCount']
@account.polls.new(
multiple: multiple,
expires_at: expires_at,
options: items.map { |item| item['name'].presence || item['content'] }.compact,
cached_tallies: items.map { |item| item.dig('replies', 'totalItems') || 0 }
cached_tallies: items.map { |item| item.dig('replies', 'totalItems') || 0 },
voters_count: voters_count
)
end
def poll_vote?
return false if replied_to_status.nil? || replied_to_status.preloadable_poll.nil? || !replied_to_status.local? || !replied_to_status.preloadable_poll.options.include?(@object['name'])
unless replied_to_status.preloadable_poll.expired?
replied_to_status.preloadable_poll.votes.create!(account: @account, choice: replied_to_status.preloadable_poll.options.index(@object['name']), uri: @object['id'])
ActivityPub::DistributePollUpdateWorker.perform_in(3.minutes, replied_to_status.id) unless replied_to_status.preloadable_poll.hide_totals?
end
poll_vote! unless replied_to_status.preloadable_poll.expired?
true
end
def poll_vote!
poll = replied_to_status.preloadable_poll
already_voted = true
RedisLock.acquire(poll_lock_options) do |lock|
if lock.acquired?
already_voted = poll.votes.where(account: @account).exists?
poll.votes.create!(account: @account, choice: poll.options.index(@object['name']), uri: @object['id'])
else
raise Mastodon::RaceConditionError
end
end
increment_voters_count! unless already_voted
ActivityPub::DistributePollUpdateWorker.perform_in(3.minutes, replied_to_status.id) unless replied_to_status.preloadable_poll.hide_totals?
end
def resolve_thread(status)
return unless status.reply? && status.thread.nil? && Request.valid_url?(in_reply_to_uri)
ThreadResolveWorker.perform_async(status.id, in_reply_to_uri)
......@@ -416,7 +431,22 @@ class ActivityPub::Activity::Create < ActivityPub::Activity
ActivityPub::RawDistributionWorker.perform_async(Oj.dump(@json), replied_to_status.account_id, [@account.preferred_inbox_url])
end
def increment_voters_count!
poll = replied_to_status.preloadable_poll
unless poll.voters_count.nil?
poll.voters_count = poll.voters_count + 1
poll.save
end
rescue ActiveRecord::StaleObjectError
poll.reload
retry
end
def lock_options
{ redis: Redis.current, key: "create:#{@object['id']}" }
end
def poll_lock_options
{ redis: Redis.current, key: "vote:#{replied_to_status.poll_id}:#{@account.id}" }
end
end
......@@ -21,6 +21,7 @@ class ActivityPub::Adapter < ActiveModelSerializers::Adapter::Base
identity_proof: { 'toot' => 'http://joinmastodon.org/ns#', 'IdentityProof' => 'toot:IdentityProof' },
blurhash: { 'toot' => 'http://joinmastodon.org/ns#', 'blurhash' => 'toot:blurhash' },
discoverable: { 'toot' => 'http://joinmastodon.org/ns#', 'discoverable' => 'toot:discoverable' },
voters_count: { 'toot' => 'http://joinmastodon.org/ns#', 'votersCount' => 'toot:votersCount' },
}.freeze
def self.default_key_transform
......
......@@ -16,6 +16,7 @@
# created_at :datetime not null
# updated_at :datetime not null
# lock_version :integer default(0), not null
# voters_count :bigint(8)
#
class Poll < ApplicationRecord
......
# frozen_string_literal: true
class ActivityPub::NoteSerializer < ActivityPub::Serializer
context_extensions :atom_uri, :conversation, :sensitive
context_extensions :atom_uri, :conversation, :sensitive, :voters_count
attributes :id, :type, :summary,
:in_reply_to, :published, :url,
......@@ -23,6 +23,8 @@ class ActivityPub::NoteSerializer < ActivityPub::Serializer
attribute :end_time, if: :poll_and_expires?
attribute :closed, if: :poll_and_expired?
attribute :voters_count, if: :poll_and_voters_count?
def id
ActivityPub::TagManager.instance.uri_for(object)
end
......@@ -141,6 +143,10 @@ class ActivityPub::NoteSerializer < ActivityPub::Serializer
alias end_time closed
def voters_count
object.preloadable_poll.voters_count
end
def poll_and_expires?
object.preloadable_poll&.expires_at&.present?
end
......@@ -149,6 +155,10 @@ class ActivityPub::NoteSerializer < ActivityPub::Serializer
object.preloadable_poll&.expired?
end
def poll_and_voters_count?
object.preloadable_poll&.voters_count
end
class MediaAttachmentSerializer < ActivityPub::Serializer
context_extensions :blurhash, :focal_point
......
......@@ -2,7 +2,7 @@
class REST::PollSerializer < ActiveModel::Serializer
attributes :id, :expires_at, :expired,
:multiple, :votes_count
:multiple, :votes_count, :voters_count
has_many :loaded_options, key: :options
has_many :emojis, serializer: REST::CustomEmojiSerializer
......
......@@ -28,6 +28,8 @@ class ActivityPub::ProcessPollService < BaseService
end
end
voters_count = @json['votersCount']
latest_options = items.map { |item| item['name'].presence || item['content'] }
# If for some reasons the options were changed, it invalidates all previous
......@@ -39,7 +41,8 @@ class ActivityPub::ProcessPollService < BaseService
last_fetched_at: Time.now.utc,
expires_at: expires_at,
options: latest_options,
cached_tallies: items.map { |item| item.dig('replies', 'totalItems') || 0 }
cached_tallies: items.map { |item| item.dig('replies', 'totalItems') || 0 },
voters_count: voters_count
)
rescue ActiveRecord::StaleObjectError
poll.reload
......
......@@ -174,7 +174,7 @@ class PostStatusService < BaseService
def poll_attributes
return if @options[:poll].blank?
@options[:poll].merge(account: @account)
@options[:poll].merge(account: @account, voters_count: 0)
end
def scheduled_options
......
......@@ -12,12 +12,24 @@ class VoteService < BaseService
@choices = choices
@votes = []
ApplicationRecord.transaction do
@choices.each do |choice|
@votes << @poll.votes.create!(account: @account, choice: choice)
already_voted = true
RedisLock.acquire(lock_options) do |lock|
if lock.acquired?
already_voted = @poll.votes.where(account: @account).exists?
ApplicationRecord.transaction do
@choices.each do |choice|
@votes << @poll.votes.create!(account: @account, choice: choice)
end
end
else
raise Mastodon::RaceConditionError
end
end
increment_voters_count! unless already_voted
ActivityTracker.increment('activity:interactions')
if @poll.account.local?
......@@ -53,4 +65,18 @@ class VoteService < BaseService
def build_json(vote)
Oj.dump(serialize_payload(vote, ActivityPub::VoteSerializer))
end
def increment_voters_count!
unless @poll.voters_count.nil?
@poll.voters_count = @poll.voters_count + 1
@poll.save
end
rescue ActiveRecord::StaleObjectError
@poll.reload
retry
end
def lock_options
{ redis: Redis.current, key: "vote:#{@poll.id}:#{@account.id}" }
end
end
- show_results = (user_signed_in? && poll.voted?(current_account)) || poll.expired?
- own_votes = user_signed_in? ? poll.own_votes(current_account) : []
- total_votes_count = poll.voters_count || poll.votes_count
.poll
%ul
- poll.loaded_options.each_with_index do |option, index|
%li
- if show_results
- percent = poll.votes_count > 0 ? 100 * option.votes_count / poll.votes_count : 0
- percent = total_votes_count > 0 ? 100 * option.votes_count / total_votes_count : 0
%span.poll__chart{ style: "width: #{percent}%" }
%label.poll__text><
......@@ -24,7 +25,10 @@
%button.button.button-secondary{ disabled: true }
= t('statuses.poll.vote')
%span= t('statuses.poll.total_votes', count: poll.votes_count)
- if poll.voters_count.nil?
%span= t('statuses.poll.total_votes', count: poll.votes_count)
- else
%span= t('statuses.poll.total_people', count: poll.voters_count)
- unless poll.expires_at.nil?
·
......
......@@ -1030,6 +1030,9 @@ en:
private: Non-public toot cannot be pinned
reblog: A boost cannot be pinned
poll:
total_people:
one: "%{count} person"
other: "%{count} people"
total_votes:
one: "%{count} vote"
other: "%{count} votes"
......
class AddVotersCountToPolls < ActiveRecord::Migration[5.2]
def change
add_column :polls, :voters_count, :bigint
end
end
......@@ -10,7 +10,7 @@
#
# It's strongly recommended that you check this file into your version control system.
ActiveRecord::Schema.define(version: 2019_09_27_124642) do
ActiveRecord::Schema.define(version: 2019_09_27_232842) do
# These are extensions that must be enabled in order to support this database
enable_extension "plpgsql"
......@@ -529,6 +529,7 @@ ActiveRecord::Schema.define(version: 2019_09_27_124642) do
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.integer "lock_version", default: 0, null: false
t.bigint "voters_count"
t.index ["account_id"], name: "index_polls_on_account_id"
t.index ["status_id"], name: "index_polls_on_status_id"
end
......
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