# redis-sha1.rb - Copyright (C) 2009 Salvatore Sanfilippo # BSD license, See the COPYING file for more information. # # Performs the SHA1 sum of the whole datset. # This is useful to spot bugs in persistence related code and to make sure # Slaves and Masters are in SYNC. # # If you hack this code make sure to sort keys and set elements as this are # unsorted elements. Otherwise the sum may differ with equal dataset. require 'rubygems' require 'redis' require 'digest/sha1' def redisSha1(opts={}) sha1="" r = Redis.new(opts) r.keys('*').sort.each{|k| vtype = r.type?(k) if vtype == "string" len = 1 sha1 = Digest::SHA1.hexdigest(sha1+k) sha1 = Digest::SHA1.hexdigest(sha1+r.get(k)) elsif vtype == "list" len = r.llen(k) if len != 0 sha1 = Digest::SHA1.hexdigest(sha1+k) sha1 = Digest::SHA1.hexdigest(sha1+r.list_range(k,0,-1).join("\x01")) end elsif vtype == "set" len = r.scard(k) if len != 0 sha1 = Digest::SHA1.hexdigest(sha1+k) sha1 = Digest::SHA1.hexdigest(sha1+r.set_members(k).to_a.sort.join("\x02")) end elsif vtype == "zset" len = r.zcard(k) if len != 0 sha1 = Digest::SHA1.hexdigest(sha1+k) sha1 = Digest::SHA1.hexdigest(sha1+r.zrange(k,0,-1).join("\x01")) end end # puts "#{k} => #{sha1}" if len != 0 } sha1 end host = ARGV[0] || "127.0.0.1" port = ARGV[1] || "6379" db = ARGV[2] || "0" puts "Performing SHA1 of Redis server #{host} #{port} DB: #{db}" p "Dataset SHA1: #{redisSha1(:host => host, :port => port.to_i, :db => db)}"