Display trending hashtags on admin dashboard (#8038)

rebase/4.0.0rc2
Eugen Rochko 2018-07-16 19:21:27 +02:00 committed by GitHub
parent 7e2678f7f6
commit 0d13e30ad2
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3 changed files with 37 additions and 0 deletions

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@ -27,6 +27,7 @@ module Admin
@saml_enabled = ENV['SAML_ENABLED'] == 'true'
@pam_enabled = ENV['PAM_ENABLED'] == 'true'
@hidden_service = ENV['ALLOW_ACCESS_TO_HIDDEN_SERVICE'] == 'true'
@trending_hashtags = TrendingTags.get(7)
end
private

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@ -1,7 +1,10 @@
# frozen_string_literal: true
class TrendingTags
KEY = 'trending_tags'
EXPIRE_HISTORY_AFTER = 7.days.seconds
EXPIRE_TRENDS_AFTER = 1.day.seconds
THRESHOLD = 5
class << self
def record_use!(tag, account, at_time = Time.now.utc)
@ -9,6 +12,14 @@ class TrendingTags
increment_historical_use!(tag.id, at_time)
increment_unique_use!(tag.id, account.id, at_time)
increment_vote!(tag.id, at_time)
end
def get(limit)
key = "#{KEY}:#{Time.now.utc.beginning_of_day.to_i}"
tag_ids = redis.zrevrange(key, 0, limit).map(&:to_i)
tags = Tag.where(id: tag_ids).to_a.map { |tag| [tag.id, tag] }.to_h
tag_ids.map { |tag_id| tags[tag_id] }.compact
end
private
@ -25,6 +36,22 @@ class TrendingTags
redis.expire(key, EXPIRE_HISTORY_AFTER)
end
def increment_vote!(tag_id, at_time)
key = "#{KEY}:#{at_time.beginning_of_day.to_i}"
expected = redis.pfcount("activity:tags:#{tag_id}:#{(at_time - 1.day).beginning_of_day.to_i}:accounts").to_f
expected = 1.0 if expected.zero?
observed = redis.pfcount("activity:tags:#{tag_id}:#{at_time.beginning_of_day.to_i}:accounts").to_f
if expected > observed || observed < THRESHOLD
redis.zrem(key, tag_id.to_s)
else
score = ((observed - expected)**2) / expected
redis.zadd(key, score, tag_id.to_s)
end
redis.expire(key, EXPIRE_TRENDS_AFTER)
end
def disallowed_hashtags
return @disallowed_hashtags if defined?(@disallowed_hashtags)

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@ -138,3 +138,12 @@
%span.pull-right.positive-hint= fa_icon 'check fw'
- else
%span.pull-right.negative-hint= fa_icon 'times fw'
.dashboard__widgets__trends
%div
%h4= t 'admin.dashboard.trends'
%ul
- @trending_hashtags.each do |tag|
%li
= link_to "##{tag.name}", web_url("timelines/tag/#{tag.name}")
%span.pull-right= number_with_delimiter(tag.history[0]['accounts'].to_i)