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maps-balancedness.rb
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| #!/usr/bin/ruby | |
| # coding: utf-8 | |
| require 'json' | |
| require 'pp' | |
| require 'optparse' | |
| require 'rubygems' | |
| require 'restclient' | |
| $opts = {:username => "Administrator", | |
| :password => "asdasd", | |
| :url => "http://127.0.0.1:9000/"} | |
| OptionParser.new do |opts| | |
| $opts.each_key do |optname| | |
| opts.on("--#{optname}=#{optname.to_s.upcase}", "#{optname} (defaults to #{$opts[optname]})") {|value| $opts[optname] = value} | |
| end | |
| end.parse! | |
| $username = $opts[:username] | |
| $password = $opts[:password] | |
| def req!(method, path, payload = nil, headers = nil) | |
| opts = { | |
| :method => method, :url => $opts[:url].chomp("/") + path, | |
| :payload => payload, :headers => headers || {}, | |
| :user => $opts[:username], | |
| :password => $opts[:password] | |
| } | |
| RestClient::Request.execute(opts) | |
| end | |
| def get!(path, headers = nil) | |
| req!(:get, path, nil, headers) | |
| end | |
| def vb_counts_mismatch(vbmap) | |
| balances = (0..3).map do |turn| | |
| histo = vbmap.group_by {|chain| chain[turn]}.tap {|h| h.delete nil}.map {|(n, g)| [n, g.size]}.sort_by(&:last) | |
| # puts "for turn #{turn} max group is #{histo.last.inspect} and min group is #{histo.first.inspect}" | |
| (histo.last || [0]).last - (histo.first || [0]).last | |
| end | |
| total_histo = vbmap.flatten.compact.group_by(&:dup).map(&:last).map(&:size) | |
| total_balance = (total_histo.max || 0) - (total_histo.min || 0) | |
| rep_histo = vbmap.collect_concat {|chain| chain[1..-1].compact}.group_by(&:dup).map(&:last).map(&:size) | |
| rep_balance = (rep_histo.max || 0) - (rep_histo.min || 0) | |
| [total_balance, rep_balance, *balances] | |
| end | |
| JSON.parse(get!("/pools/default/buckets")).each do |details| | |
| m = details["vBucketServerMap"] | |
| servers = m["serverList"] | |
| vbm = m["vBucketMap"].map {|chain| chain.map {|idx| idx >= 0 ? servers[idx] : nil}} | |
| mismatch = vb_counts_mismatch(vbm) | |
| m = mismatch.zip(-2..3).map do |mis, idx| | |
| case idx | |
| when -2 | |
| "total vbuckets count mismatch #{mis}" | |
| when -1 | |
| "total replica vbuckets count mismatch #{mis}" | |
| when 0 | |
| "master vbuckets count mismatch #{mis}" | |
| else | |
| "replica №#{idx} mismatch #{mis} (only valid for chain topology)" | |
| end | |
| end | |
| m = m[0,details["replicaNumber"]+3] | |
| puts "for bucket `#{details["name"]}':\n #{m.join("\n ")}\n" | |
| end |
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