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d4d3580761
Previously cached counting made redis calls in main thread and performed the flush in main thread. This could lead to pathological states in extreme heavy load. This refactor reduces load and cleans up the interface
79 lines
1.8 KiB
Ruby
79 lines
1.8 KiB
Ruby
# frozen_string_literal: true
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class ApplicationRequest < ActiveRecord::Base
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enum req_type: %i(http_total
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http_2xx
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http_background
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http_3xx
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http_4xx
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http_5xx
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page_view_crawler
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page_view_logged_in
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page_view_anon
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page_view_logged_in_mobile
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page_view_anon_mobile)
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include CachedCounting
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def self.disable
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@disabled = true
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end
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def self.enable
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@disabled = false
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end
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def self.increment!(req_type)
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return if @disabled
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perform_increment!(req_type)
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end
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def self.write_cache!(req_type, count, date)
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id = req_id(date, req_type)
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where(id: id).update_all(["count = count + ?", count])
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end
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def self.req_id(date, req_type, retries = 0)
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req_type_id = req_types[req_type]
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# a poor man's upsert
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id = where(date: date, req_type: req_type_id).pluck_first(:id)
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id ||= create!(date: date, req_type: req_type_id, count: 0).id
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rescue # primary key violation
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if retries == 0
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req_id(date, req_type, 1)
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else
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raise
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end
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end
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def self.stats
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s = HashWithIndifferentAccess.new({})
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self.req_types.each do |key, i|
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query = self.where(req_type: i)
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s["#{key}_total"] = query.sum(:count)
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s["#{key}_30_days"] = query.where("date > ?", 30.days.ago).sum(:count)
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s["#{key}_7_days"] = query.where("date > ?", 7.days.ago).sum(:count)
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end
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s
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end
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end
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# == Schema Information
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#
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# Table name: application_requests
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#
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# id :integer not null, primary key
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# date :date not null
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# req_type :integer not null
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# count :integer default(0), not null
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#
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# Indexes
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#
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# index_application_requests_on_date_and_req_type (date,req_type) UNIQUE
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#
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