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-rw-r--r--lib/pairing/PairingAlgorithm.rb6
-rw-r--r--lib/playing/.keep0
-rw-r--r--lib/sampling/README.md28
-rw-r--r--lib/sampling/double_blind.rb35
-rw-r--r--lib/sampling/manual.rb36
-rw-r--r--lib/sampling/riot_api.rb170
-rw-r--r--lib/scheduling/README.md13
-rw-r--r--lib/scheduling/elimination.rb144
-rw-r--r--lib/scheduling/roundrobin.rb74
-rw-r--r--lib/scoring/README.md10
-rw-r--r--lib/scoring/fibonacci_peer_with_blowout.rb22
-rw-r--r--lib/scoring/marginal_peer.rb15
-rw-r--r--lib/scoring/winner_takes_all.rb20
-rw-r--r--lib/seeding/.keep0
-rw-r--r--lib/seeding/README.md4
-rw-r--r--lib/seeding/early_bird_seeding.rb20
-rw-r--r--lib/seeding/fair_ranked_seeding.rb40
-rw-r--r--lib/seeding/random_seeding.rb20
-rw-r--r--lib/throttled_api_request.rb25
19 files changed, 682 insertions, 0 deletions
diff --git a/lib/pairing/PairingAlgorithm.rb b/lib/pairing/PairingAlgorithm.rb
new file mode 100644
index 0000000..81e4df6
--- /dev/null
+++ b/lib/pairing/PairingAlgorithm.rb
@@ -0,0 +1,6 @@
+module Pairing
+ class PairingAlgorithm
+ def self.pair(matches, players)
+ end
+ end
+end
diff --git a/lib/playing/.keep b/lib/playing/.keep
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/lib/playing/.keep
diff --git a/lib/sampling/README.md b/lib/sampling/README.md
new file mode 100644
index 0000000..28c603e
--- /dev/null
+++ b/lib/sampling/README.md
@@ -0,0 +1,28 @@
+Files in this directory should be modules implementing the following
+interface:
+
+ - `works_with?(Game) => Boolean`
+ Returns whether or not this sampling method works with the
+ specified game.
+
+ - `uses_remote?() => Boolean`
+ Return whether or not this sampling method requires remote IDs for
+ users.
+ - `set_remote_name(User, Game, String)`
+ Set the remote ID for a user for the specified game. It is safe to
+ assume that this sampling method `works_with?` that game.
+ - `get_remote_name(Object)`
+ When given an object from `RemoteUsername#value`, give back a
+ human-readable/editable name to display.
+
+ - `sampling_start(Match)`
+ Fetch the statistics for a match.
+ - `sampling_done?(Match) => Boolean`
+ Returns whether or not statistics have been completely collected
+ yet.
+
+ - `render_user_interaction(Match, User) => String`
+ Returns HTML to render on a page.
+ - `handle_user_interaction(Match, User, Hash params)`
+ Handles params from the form generated by
+ `#user_interaction_render`.
diff --git a/lib/sampling/double_blind.rb b/lib/sampling/double_blind.rb
new file mode 100644
index 0000000..409da10
--- /dev/null
+++ b/lib/sampling/double_blind.rb
@@ -0,0 +1,35 @@
+module Sampling
+ module DoubleBlind
+ def self.works_with?(game)
+ return true
+ end
+
+ def self.uses_remote?
+ return false
+ end
+
+ def self.set_remote_name(user, game, value)
+ raise "This sampling method doesn't use remote usernames."
+ end
+
+ def self.get_remote_name(value)
+ raise "This sampling method doesn't use remote usernames."
+ end
+
+ def self.sampling_start(match)
+ # TODO
+ end
+
+ def self.sampling_done?(match)
+ # TODO
+ end
+
+ def self.render_user_interaction(match, user)
+ # TODO
+ end
+
+ def self.handle_user_interaction(match, user, sampling_params)
+ # TODO
+ end
+ end
+end
diff --git a/lib/sampling/manual.rb b/lib/sampling/manual.rb
new file mode 100644
index 0000000..a1bf9a5
--- /dev/null
+++ b/lib/sampling/manual.rb
@@ -0,0 +1,36 @@
+module Sampling
+ module Manual
+ def self.works_with?(game)
+ return true
+ end
+
+ def self.uses_remote?
+ return false
+ end
+
+ def self.set_remote_name(user, game, value)
+ raise "This sampling method doesn't use remote usernames."
+ end
+
+ def self.get_remote_name(value)
+ raise "This sampling method doesn't use remote usernames."
+ end
+
+ def self.sampling_start(match)
+ # TODO
+ end
+
+ def self.sampling_done?(match)
+ # TODO
+ end
+
+ def self.render_user_interaction(match, user)
+ # TODO
+ end
+
+ def self.handle_user_interaction(match, user, sampling_params)
+ # TODO
+ #match.statistics.create(user: nil, name: "blowout",
+ end
+ end
+end
diff --git a/lib/sampling/riot_api.rb b/lib/sampling/riot_api.rb
new file mode 100644
index 0000000..d5e9c72
--- /dev/null
+++ b/lib/sampling/riot_api.rb
@@ -0,0 +1,170 @@
+module Sampling
+ module RiotApi
+ protected
+ def self.api_name
+ "prod.api.pvp.net/api/lol"
+ end
+
+ protected
+ def self.api_key
+ ENV["RIOT_API_KEY"]
+ end
+
+ protected
+ def self.region
+ ENV["RIOT_API_REGION"]
+ end
+
+ protected
+ def self.url(request, args={})
+ "https://prod.api.pvp.net/api/lol/#{region}/#{request % args.merge(args){|k,v|url_escape(v)}}?#{api_key}"
+ end
+
+ protected
+ def self.url_escape(string)
+ URI::escape(string.to_s, /[^a-zA-Z0-9._~!$&'()*+,;=:@-]/)
+ end
+
+ protected
+ def self.standardize(summoner_name)
+ summoner_name.to_s.downcase.gsub(' ', '')
+ end
+
+ protected
+ class Job < ThrottledApiRequest
+ def initialize(request, args={})
+ @url = Sampling::RiotApi::url(request, args)
+ super(api_name, 10.seconds, 10)
+ end
+
+ def perform
+ response = open(@url)
+ status = response.status
+ data = JSON::parse(response.read)
+
+ # Error codes that RIOT uses:
+ # "400"=>"Bad request"
+ # "401"=>"Unauthorized"
+ # "429"=>"Rate limit exceeded"
+ # "500"=>"Internal server error"
+ # "503"=>"Service unavailable"
+ # "404"=>"Not found"
+ # Should probably handle these better
+ if status[0] != "200"
+ raise "GET #{@url} => #{status.join(" ")}"
+ end
+ self.handle(data)
+ end
+
+ def handle(data)
+ end
+ end
+
+ ########################################################################
+
+ ##
+ # Return whether or not this sampling method works with the specified game.
+ # Spoiler: It only works with League of Legends (or subclasses of it).
+ public
+ def self.works_with?(game)
+ if api_key.nil? or region.nil?
+ return false
+ end
+ if game.name == "League of Legends"
+ return true
+ end
+ unless game.parent.nil?
+ return works_with?(game.parent)
+ end
+ end
+
+ ##
+ # This sampling method uses remote IDs
+ public
+ def self.uses_remote?
+ return true
+ end
+
+ ##
+ # When given a summoner name for a user, figure out the summoner ID.
+ public
+ def self.set_remote_name(user, game, summoner_name)
+ Delayed::Job.enqueue(UsernameJob.new(user, game, summoner_name), :queue => api_name)
+ end
+ protected
+ class UsernameJob < Job
+ def initialize(user, game, summoner_name)
+ @user_id = user.id
+ @game_id = game.id
+ # Escape any funny stuff
+ summoner_names = [summoner_name].map{|name|Sampling::RiotApi::standardize(name.gsub(',',''))}
+ # Generate the request
+ super("v1.3/summoner/by-name/%{summonerNames}", { :summonerNames => summoner_names.join(",") })
+ end
+ def handle(data)
+ user = User.find(@user_id)
+ game = Game.find(@game_id)
+
+ normalized_summoner_name = data.keys.first
+ remote_data = {
+ :id => data[normalized_summoner_name]["id"],
+ :name => data[normalized_summoner_name]["name"],
+ }
+
+ user.set_remote_username(game, remote_data)
+ end
+ end
+
+ ##
+ # When given data from RemoteUsername#value, give back a readable name to display.
+ # Here, this is the summoner name.
+ public
+ def self.get_remote_name(data)
+ data["name"]
+ end
+
+ ##
+ # Fetch all the statistics for a match.
+ public
+ def self.sampling_start(match)
+ @match.teams.each do |team|
+ team.users.each do |user|
+ Delayed::Job.enqueue(MatchJob.new(user, match), :queue => api_name)
+ end
+ end
+ end
+ protected
+ class FetchStatisticsJob < Job
+ def initialize(user, match)
+ @user_id = user.id
+ @match_id = match.id
+ # Get the summoner id
+ summoner = user.get_remote_username(match.tournament_stage.tournament.game)
+ if summoner.nil?
+ raise "Someone didn't enter their summoner name"
+ end
+ # Generate the request
+ super("v1.3/game/by-summoner/%{summonerId}/recent", { :summonerId => summoner["id"] })
+ end
+ def handle(data)
+ user = User.find(@user_id)
+ match = Match.find(@match_id)
+ Statistic.create(user: user, match: match, value: TODO)
+ end
+ end
+
+ public
+ def self.sampling_done?(match)
+ # TODO
+ end
+
+ public
+ def self.render_user_interaction(match, user)
+ return ""
+ end
+
+ public
+ def self.handle_user_interaction(match, user)
+ end
+ end
+end
diff --git a/lib/scheduling/README.md b/lib/scheduling/README.md
new file mode 100644
index 0000000..173b7be
--- /dev/null
+++ b/lib/scheduling/README.md
@@ -0,0 +1,13 @@
+Files in this directory should implement the following interface:
+
+ - `initialize(tournament_stage)`
+ construct new Scheduling object from tournament_stage
+
+ - `create_matches`
+ creates all the matches of the current round
+
+ - `finish_match(match)`
+ progresses the match through the schedule
+
+ - `graph`
+ returns a string representation of an svg image of the current stage \ No newline at end of file
diff --git a/lib/scheduling/elimination.rb b/lib/scheduling/elimination.rb
new file mode 100644
index 0000000..4518cff
--- /dev/null
+++ b/lib/scheduling/elimination.rb
@@ -0,0 +1,144 @@
+
+module Scheduling
+ class Elimination
+ include Rails.application.routes.url_helpers
+
+ def initialize(tournament_stage)
+ @tournament_stage = tournament_stage
+ end
+
+ def create_matches
+ num_teams = (tournament.players.count/tournament.min_players_per_team).floor
+ num_matches = (Float(num_teams - tournament.min_teams_per_match)/(tournament.min_teams_per_match - 1)).ceil + 1
+ for i in 1..num_matches
+ tournament_stage.matches.create(status: 0, submitted_peer_evaluations: 0)
+ end
+
+ match_num = num_matches-1
+ team_num = 0
+
+ tournament.players.shuffle
+
+ # for each grouping of min_players_per_team
+ tournament.players.each_slice(tournament.min_players_per_team) do |team_members|
+ # if the match is full, move to the next match, otherwise move to the next team
+ if (team_num == tournament.min_teams_per_match)
+ match_num -= 1
+ team_num = 1
+ else
+ team_num += 1
+ end
+ # create a new team in the current match
+ tournament_stage.matches[match_num].teams.push(Team.create(users: team_members))
+ end
+ end
+
+ def finish_match(match)
+ matches = match.tournament_stage.matches_ordered
+ cur_match_num = matches.invert[match]
+ unless cur_match_num == 1
+ match.winner.matches.push(matches[cur_match_num/2])
+ end
+ end
+
+ def graph(current_user)
+ matches = @tournament_stage.matches_ordered
+ numTeams = @tournament_stage.tournament.min_teams_per_match
+ logBase = numTeams
+
+ # depth of SVG tree
+ depth = Math.log(matches.count*(logBase-1),logBase).floor+1;
+
+ # height of SVG
+ matchHeight = 50*logBase;
+ height = [(matchHeight+50) * logBase**(depth-1) + 100, 500].max;
+
+ str = <<-STRING
+ <svg version="1.1" baseProfile="full"
+ xmlns="http://www.w3.org/2000/svg"
+ xmlns:xlink="http://www.w3.org/1999/xlink"
+ width="100%" height="#{height}">
+ <defs>
+ <radialGradient id="gradMatch" cx="50%" cy="50%" r="80%" fx="50%" fy="50%">
+ <stop offset="0%" style="stop-color:#fff; stop-opacity:1" />
+ <stop offset="100%" style="stop-color:#ccc;stop-opacity:0" />
+ </radialGradient>
+ </defs>
+ STRING
+ base = 1
+ pBase = 1
+ (1..matches.count).each do |i|
+ matchDepth = Math.log(i*(logBase-1), logBase).floor+1
+ puts matchDepth
+ if matchDepth > Math.log(base*(logBase-1), logBase).floor+1
+ pBase = base
+ base = i
+ end
+ puts base
+ rh = 100 / (logBase**(depth-1)+1) - 100/height;
+ puts rh
+ rw = 100/(depth+1) - 5
+ puts rw
+ rx = 50/(depth+1) + 100/(depth+1)*(depth-matchDepth)
+ puts rx
+ ry = 100/(logBase**(matchDepth-1)+1) * (i-base+1) - rh/2
+ puts ry
+
+ str += "\t<a id=\"svg-match-#{i}\" xlink:href=\"#{match_path(matches[i])}\"><g>\n"
+ str += "\t\t<rect height=\"#{rh}%\" width=\"#{rw}%\" x=\"#{rx}%\" y=\"#{ry}%\" fill=\"url(#gradMatch)\" rx=\"5px\" stroke-width=\"2\""
+ case matches[i].status
+ when 0
+ if matches[i].teams.count < @tournament_stage.tournament.min_teams_per_match
+ str += ' stroke="red"'
+ str += ' fill-opacity="0.6"'
+ else
+ str += ' stroke="green"'
+ end
+ when 1
+ str += ' stroke="orange"'
+ when 2
+ str += ' stroke="yellow"'
+ when 3
+ str += ' stroke="grey"'
+ end
+
+ str += "/>\n"
+
+ t = 1
+ while t <= numTeams
+ color = (matches[i].teams[t-1] and matches[i].teams[t-1].users.include?(current_user)) ? "#5BC0DE" : "white"
+ str += "\t\t<rect width=\"#{rw-5}%\" height=\"#{rh*Float(30)/(matchHeight)}%\" x=\"#{rx + 2.5}%\" y=\"#{ry + (Float(t-1)/numTeams)*rh + 1 }%\" fill=\"#{color}\" />\n"
+ if matches[i].teams[t-1]
+ str += "\t\t<text x=\"#{rx + rw/4}%\" y=\"#{ry + (Float(t-1)/numTeams + Float(33)/(matchHeight))*rh}%\" font-size=\"200%\">Team #{matches[i].teams[t-1].id}</text>\n"
+ end
+ if (t < numTeams)
+ str += "\t\t<text x=\"#{rx + 1.3*rw/3}%\" y=\"#{ry + (Float(t)/numTeams)*rh + 1}%\" font-size=\"200%\"> VS </text>\n"
+ end
+ t = t + 1
+ end
+
+ if i > 1
+ parent = (i+logBase-2)/logBase
+ pDepth = Math.log(parent*(logBase-1), logBase).floor+1
+ lastrx = 50/(depth+1) + 100/(depth+1)*(depth-pDepth)
+ lastry = 100/(logBase**(pDepth-1)+1) * (parent-pBase+1) - rh/2
+ str += "\t\t<line x1=\"#{rx+rw}%\" y1=\"#{ry+rh/2}%\" x2=\"#{lastrx}%\" y2=\"#{lastry+rh/2}%\" stroke=\"white\" stroke-width=\"2\" >\n"
+ end
+ str += "</g></a>\n"
+ end
+ str += '</svg>'
+
+ return str
+ end
+
+ private
+
+ def tournament_stage
+ @tournament_stage
+ end
+
+ def tournament
+ tournament_stage.tournament
+ end
+ end
+end
diff --git a/lib/scheduling/roundrobin.rb b/lib/scheduling/roundrobin.rb
new file mode 100644
index 0000000..7a9e257
--- /dev/null
+++ b/lib/scheduling/roundrobin.rb
@@ -0,0 +1,74 @@
+module Scheduling
+ class RoundRobin
+ include Rails.application.routes.url_helpers
+
+ def initialize(tournament_stage)
+ @tournament_stage = tournament_stage
+ end
+
+ def create_matches
+ num_teams = (tournament.players.count/tournament.min_players_per_team).floor
+ num_matches = Float(num_teams/2)*(num_teams-1)
+ for i in 1..num_matches
+ tournament_stage.matches.create(status: 0, submitted_peer_evaluations: 0)
+ end
+ end
+
+ def finish_match(match)
+ #declare winner of match, and store that somehow
+ rotate
+ return "totes worked\n"
+ end
+
+ def graph(current_user)
+ end
+
+ private
+
+ def create_round_array
+ #round robin should look like this.
+ #NOTE: I DO NOT KNOW IF THIS IS HOW TO PROPERLY POPULATE THE ROUND ROBIN ARRAY WITH TEAMS
+ @team_pairs = Array.new(num_matches)
+ for i in 0..@match.teams.size
+ @team_pairs.push(@match.teams[i])
+ #if there is an odd number of teams, add a dummy for byes
+ if @match.teams.size % 2 != 0 && i == @match.teams.size-1
+ dummy = Team.create
+ @team_pairs.push(dummy)
+ end
+ end
+ end
+
+ def tournament_stage
+ @tournament_stage
+ end
+
+ def tournament
+ tournament_stage.tournament
+ end
+
+ def rotate
+ #this is called when a round has completed
+
+ #remove first team
+ hold = @team_pairs.shift
+ #rotate by 1 element
+ @team_pairs.rotate!
+ #place first team the front of the array
+ @team_pairs.unshift(hold)
+ end
+
+ def mother_fuckin_winner
+ scores = {}
+ @teams_pairs.each do |team|
+ scores[team] = team.matches.
+ where(:tournament_stage => tournament_stage).
+ collect{|match|match.winner==team}
+ end
+ weiner = scores.index(scores.max)
+ scores[weiner]
+ end
+
+
+ end
+end
diff --git a/lib/scoring/README.md b/lib/scoring/README.md
new file mode 100644
index 0000000..95dd5e0
--- /dev/null
+++ b/lib/scoring/README.md
@@ -0,0 +1,10 @@
+Files in this directory should be modules implementing the following
+interface:
+
+ - `stats_needed() => Array[i]=Symbol`
+ Returns which statistics need to be collected for this scoring
+ algorithm.
+
+ - `score(match) => Hash[User]=Integer`
+ User scores for this match, assuming statistics have been
+ collected.
diff --git a/lib/scoring/fibonacci_peer_with_blowout.rb b/lib/scoring/fibonacci_peer_with_blowout.rb
new file mode 100644
index 0000000..21ffab1
--- /dev/null
+++ b/lib/scoring/fibonacci_peer_with_blowout.rb
@@ -0,0 +1,22 @@
+module Scoring
+ module FibonacciPeerWithBlowout
+ def self.stats_needed
+ return [:votes]
+ end
+
+ def self.score(match)
+ scores = {}
+ match.players.each do |player|
+ scores[player] = self.score_user(match.statistics.where(user: player, name: :votes).first, match.win?(player), match.blowout)
+ end
+ scores
+ end
+
+ protected
+
+ def self.score_user(votes, win, blowout)
+ fibonacci = Hash.new { |h,k| h[k] = k < 2 ? k : h[k-1] + h[k-2] }
+ fibonacci[votes+3] + (win ? blowout ? 12 : 10 : blowout ? 5 : 7)
+ end
+ end
+end
diff --git a/lib/scoring/marginal_peer.rb b/lib/scoring/marginal_peer.rb
new file mode 100644
index 0000000..13e1796
--- /dev/null
+++ b/lib/scoring/marginal_peer.rb
@@ -0,0 +1,15 @@
+module Scoring
+ module MarginalPeer
+ def stats_needed
+ return [:rating]
+ end
+
+ def score(match, interface)
+ scores = {}
+ match.players.each do |player|
+ scores[player.user_name] = interface.get_statistic(match, player, :rating)
+ end
+ scores
+ end
+ end
+end
diff --git a/lib/scoring/winner_takes_all.rb b/lib/scoring/winner_takes_all.rb
new file mode 100644
index 0000000..517dfd6
--- /dev/null
+++ b/lib/scoring/winner_takes_all.rb
@@ -0,0 +1,20 @@
+module Scoring
+ module WinnerTakesAll
+ def stats_needed
+ return []
+ end
+
+ def score(match, interface)
+ scores = {}
+ match.players.each do |player|
+ scores[player.user_name] = score_user(match.win?(player))
+ end
+ scores
+ end
+
+ private
+ def score_user(win)
+ win.nil? ? 0.5 : win ? 1 : 0
+ end
+ end
+end
diff --git a/lib/seeding/.keep b/lib/seeding/.keep
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/lib/seeding/.keep
diff --git a/lib/seeding/README.md b/lib/seeding/README.md
new file mode 100644
index 0000000..67fc19b
--- /dev/null
+++ b/lib/seeding/README.md
@@ -0,0 +1,4 @@
+Files in this directory should implement the following interface:
+
+- seed_matches(tournament)
+ take the matches of a tournament and the players in a tournament, assign players to teams, and teams to matches (all must exist) \ No newline at end of file
diff --git a/lib/seeding/early_bird_seeding.rb b/lib/seeding/early_bird_seeding.rb
new file mode 100644
index 0000000..30e15fc
--- /dev/null
+++ b/lib/seeding/early_bird_seeding.rb
@@ -0,0 +1,20 @@
+module Seeding
+ class EarlyBirdSeeding
+ def seed_matches(tournament)
+ matches = tournament.current_stage.matches
+ match = matches.first
+ match_num = 0
+ teams = 0
+ tournament.players.each_slice(tournament.min_players_per_team) do |slice|
+ if teams < tournament.min_teams_per_match
+ match.teams[teams].players += slice
+ teams += 1
+ else
+ match_num += 1
+ match = matches[match_num]
+ teams = 0
+ end
+ end
+ end
+ end
+end \ No newline at end of file
diff --git a/lib/seeding/fair_ranked_seeding.rb b/lib/seeding/fair_ranked_seeding.rb
new file mode 100644
index 0000000..4eb8c26
--- /dev/null
+++ b/lib/seeding/fair_ranked_seeding.rb
@@ -0,0 +1,40 @@
+module Seeding
+ class FairRankedSeeding
+ def seed_matches(tournament)
+ matches = tournament.current_stage.matches
+ match = matches.first
+ match_num = 0
+ players_used = 0
+ best_first(tournament).each_slice(tournament.min_teams_per_match) do |slice|
+ (0..tournament.min_teams_per_match-1).each do |index|
+ match.teams[index].players += slice[index]
+ end
+ players_used += 1
+ if players_used == tournament.min_players_per_team
+ match_num += 1
+ match = matches[match_num]
+ players_used = 0
+ end
+ end
+ end
+
+ private
+ def best_first(tournament)
+ tournament.players.sort {|a, b| better(a, b, tournament) }
+ end
+
+ def better(player1, player2, tournament)
+ ps1 = previousScore(player1, tournament)
+ ps2 = previousScore(player2, tournament)
+ ps1 <=> ps2
+ end
+
+ def previousScore(player, tournament)
+ score = tournament.statistics.getStatistic(player.matches.last, player, :score)
+ if score.nil?
+ return 0
+ end
+ score
+ end
+ end
+end \ No newline at end of file
diff --git a/lib/seeding/random_seeding.rb b/lib/seeding/random_seeding.rb
new file mode 100644
index 0000000..ec39e61
--- /dev/null
+++ b/lib/seeding/random_seeding.rb
@@ -0,0 +1,20 @@
+module Seeding
+ class RandomSeeding
+ def seed_matches(tournament)
+ matches = tournament.current_stage.matches
+ match = matches.first
+ match_num = 0
+ teams = 0
+ tournament.players.shuffle.each_slice(tournament.min_players_per_team) do |slice|
+ if teams < tournament.min_teams_per_match
+ match.teams[teams].players += slice
+ teams += 1
+ else
+ match_num += 1
+ match = matches[match_num]
+ teams = 0
+ end
+ end
+ end
+ end
+end \ No newline at end of file
diff --git a/lib/throttled_api_request.rb b/lib/throttled_api_request.rb
new file mode 100644
index 0000000..3f30c56
--- /dev/null
+++ b/lib/throttled_api_request.rb
@@ -0,0 +1,25 @@
+class ThrottledApiRequest < Struct.new(:api_name, :unit_time, :requests_per)
+ def before(job)
+ loop do
+ sleep_for = -1
+ ActiveRecord::Base.transaction do
+ ApiRequests.create(:api_name => self.api_name)
+ recent_requests = ApiRequets.
+ where(:api_name => self.api_name).
+ where("updated_at > ?", Time.now.utc - self.unit_time).
+ order(:updated_at)
+ if (recent_requests.count > self.requests_per)
+ sleep_for = Time.now.utc - recent_requests[recent_requests.count-self.requests_per].updated_at
+ raise ActiveRecord::Rollback
+ else
+ sleep_for = -1
+ end
+ end
+ if sleep_for != -1
+ sleep(sleep_for)
+ else
+ break
+ end
+ end
+ end
+end