Class: PostTiming
- Inherits:
-
ActiveRecord::Base
- Object
- ActiveRecord::Base
- PostTiming
- Defined in:
- app/models/post_timing.rb
Constant Summary collapse
- MAX_READ_TIME_PER_BATCH =
60 * 1000.0
Class Method Summary collapse
- .destroy_for(user_id, topic_ids) ⇒ Object
- .destroy_last_for(user, topic_id: nil, topic: nil) ⇒ Object
- .pretend_read(topic_id, actual_read_post_number, pretend_read_post_number, user_ids = nil) ⇒ Object
- .process_timings(current_user, topic_id, topic_time, timings, opts = {}) ⇒ Object
- .record_new_timing(args) ⇒ Object
-
.record_timing(args) ⇒ Object
Increases a timer if a row exists, otherwise create it.
- .set_minimum_first_unread!(user_id:, date:) ⇒ Object
- .set_minimum_first_unread_pm!(topic:, user_id:, date:) ⇒ Object
Class Method Details
.destroy_for(user_id, topic_ids) ⇒ Object
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# File 'app/models/post_timing.rb', line 103 def self.destroy_for(user_id, topic_ids) PostTiming.transaction do PostTiming.where("user_id = ? and topic_id in (?)", user_id, topic_ids).delete_all TopicUser.where("user_id = ? and topic_id in (?)", user_id, topic_ids).delete_all Post.where(topic_id: topic_ids).update_all("reads = reads - 1") date = Topic.listable_topics.where(id: topic_ids).minimum(:updated_at) set_minimum_first_unread!(user_id: user_id, date: date) if date end end |
.destroy_last_for(user, topic_id: nil, topic: nil) ⇒ Object
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# File 'app/models/post_timing.rb', line 74 def self.destroy_last_for(user, topic_id: nil, topic: nil) topic ||= Topic.find(topic_id) post_number = user.whisperer? ? topic.highest_staff_post_number : topic.highest_post_number last_read = post_number - 1 PostTiming.transaction do PostTiming.where( "topic_id = ? AND user_id = ? AND post_number > ?", topic.id, user.id, last_read, ).delete_all last_read = nil if last_read < 1 TopicUser.where(user_id: user.id, topic_id: topic.id).update_all( last_read_post_number: last_read, ) topic.posts.find_by(post_number: post_number).decrement!(:reads) if topic. set_minimum_first_unread_pm!(topic: topic, user_id: user.id, date: topic.updated_at) else set_minimum_first_unread!(user_id: user.id, date: topic.updated_at) end end end |
.pretend_read(topic_id, actual_read_post_number, pretend_read_post_number, user_ids = nil) ⇒ Object
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# File 'app/models/post_timing.rb', line 10 def self.pretend_read(topic_id, actual_read_post_number, pretend_read_post_number, user_ids = nil) # This is done in SQL cause the logic is quite tricky and we want to do this in one db hit # user_ids_condition = user_ids.present? ? "AND user_id = ANY(ARRAY[:user_ids]::int[])" : "" sql_query = <<-SQL INSERT INTO post_timings(topic_id, user_id, post_number, msecs) SELECT :topic_id, user_id, :pretend_read_post_number, 1 FROM post_timings pt WHERE topic_id = :topic_id AND post_number = :actual_read_post_number #{user_ids_condition} AND NOT EXISTS ( SELECT 1 FROM post_timings pt1 WHERE pt1.topic_id = pt.topic_id AND pt1.post_number = :pretend_read_post_number AND pt1.user_id = pt.user_id ) SQL params = { pretend_read_post_number: pretend_read_post_number, topic_id: topic_id, actual_read_post_number: actual_read_post_number, } params[:user_ids] = user_ids if user_ids.present? DB.exec(sql_query, params) TopicUser.update_last_read_post_number(topic_id:) end |
.process_timings(current_user, topic_id, topic_time, timings, opts = {}) ⇒ Object
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# File 'app/models/post_timing.rb', line 150 def self.process_timings(current_user, topic_id, topic_time, timings, opts = {}) lookup_column = current_user.whisperer? ? "highest_staff_post_number" : "highest_post_number" highest_post_number = DB.query_single(<<~SQL, topic_id: topic_id).first SELECT #{lookup_column} FROM topics WHERE id = :topic_id SQL # does not exist log nothing return if highest_post_number.nil? UserStat.update_time_read!(current_user.id) max_time_per_post = ((Time.now - current_user.created_at) * 1000.0) max_time_per_post = MAX_READ_TIME_PER_BATCH if max_time_per_post > MAX_READ_TIME_PER_BATCH highest_seen = 1 new_posts_read = 0 join_table = [] i = timings.length while i > 0 i -= 1 timings[i][1] = max_time_per_post if timings[i][1] > max_time_per_post timings.delete_at(i) if timings[i][0] < 1 timings.delete_at(i) if timings[i][0] > highest_post_number end timings.each_with_index do |(post_number, time), index| join_table << "SELECT #{topic_id.to_i} topic_id, #{post_number.to_i} post_number, #{current_user.id.to_i} user_id, #{time.to_i} msecs, #{index} idx" highest_seen = post_number.to_i > highest_seen ? post_number.to_i : highest_seen end if join_table.length > 0 sql = <<~SQL UPDATE post_timings t SET msecs = LEAST(t.msecs::bigint + x.msecs, 2^31 - 1) FROM (#{join_table.join(" UNION ALL ")}) x WHERE x.topic_id = t.topic_id AND x.post_number = t.post_number AND x.user_id = t.user_id RETURNING x.idx SQL existing = Set.new(DB.query_single(sql)) sql = <<~SQL SELECT 1 FROM topics WHERE deleted_at IS NULL AND archetype = 'regular' AND id = :topic_id SQL is_regular = DB.exec(sql, topic_id: topic_id) == 1 new_posts_read = timings.size - existing.size if is_regular timings.each_with_index do |(post_number, time), index| if existing.exclude?(index) PostTiming.record_new_timing( topic_id: topic_id, post_number: post_number, user_id: current_user.id, msecs: time, ) end end end total_changed = 0 if timings.length > 0 total_changed = Notification.mark_posts_read(current_user, topic_id, timings.map { |t| t[0] }) end topic_time = max_time_per_post if topic_time > max_time_per_post TopicUser.update_last_read( current_user, topic_id, highest_seen, new_posts_read, topic_time, opts, ) TopicGroup.update_last_read(current_user, topic_id, highest_seen) if total_changed > 0 current_user.reload current_user.publish_notifications_state end end |
.record_new_timing(args) ⇒ Object
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# File 'app/models/post_timing.rb', line 41 def self.record_new_timing(args) row_count = DB.exec( "INSERT INTO post_timings (topic_id, user_id, post_number, msecs) SELECT :topic_id, :user_id, :post_number, :msecs ON CONFLICT DO NOTHING", args, ) # concurrency is hard, we are not running serialized so this can possibly # still happen, if it happens we just don't care, its an invalid record anyway return if row_count == 0 Post.where( ["topic_id = :topic_id and post_number = :post_number", args], ).update_all "reads = reads + 1" return if Topic.exists?(id: args[:topic_id], archetype: Archetype.) UserStat.where(user_id: args[:user_id]).update_all "posts_read_count = posts_read_count + 1" end |
.record_timing(args) ⇒ Object
Increases a timer if a row exists, otherwise create it
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# File 'app/models/post_timing.rb', line 62 def self.record_timing(args) rows = DB.exec(<<~SQL, args) UPDATE post_timings SET msecs = msecs + :msecs WHERE topic_id = :topic_id AND user_id = :user_id AND post_number = :post_number SQL record_new_timing(args) if rows == 0 end |
.set_minimum_first_unread!(user_id:, date:) ⇒ Object
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# File 'app/models/post_timing.rb', line 139 def self.set_minimum_first_unread!(user_id:, date:) DB.exec(<<~SQL, date: date, user_id: user_id) UPDATE user_stats SET first_unread_at = :date WHERE first_unread_at > :date AND user_id = :user_id SQL end |
.set_minimum_first_unread_pm!(topic:, user_id:, date:) ⇒ Object
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# File 'app/models/post_timing.rb', line 117 def self.set_minimum_first_unread_pm!(topic:, user_id:, date:) if topic.topic_allowed_users.exists?(user_id: user_id) UserStat.where("first_unread_pm_at > ? AND user_id = ?", date, user_id).update_all( first_unread_pm_at: date, ) else DB.exec(<<~SQL, date: date, user_id: user_id, topic_id: topic.id) UPDATE group_users gu SET first_unread_pm_at = :date FROM ( SELECT gu2.user_id, gu2.group_id FROM group_users gu2 INNER JOIN topic_allowed_groups tag ON tag.group_id = gu2.group_id AND tag.topic_id = :topic_id WHERE gu2.user_id = :user_id ) Y WHERE gu.user_id = Y.user_id AND gu.group_id = Y.group_id SQL end end |