Ruby client library updated. Important changes in this new version!

client-libraries/ruby/.gitignore

@@ -0,0 +1,3 @@
+nohup.out
+redis/*
+rdsrv

client-libraries/ruby/README.rdoc

@@ -1,12 +0,0 @@
-== redis
-
-A ruby client library for the redis key value storage system:
-http://code.google.com/p/redis/wiki/README
-
-redis is a key value store with some interesting features:
-
-1. fast
-2. keys are strings but values can have types of "NONE","STRING","LIST","SET"
-   list's can be atomicaly push'd, pop'd and lpush'd, lpop'd and indexed so you 
-   can store things like lists of comments under one key and still be able to 
-   append comments without reading and putting back the whole list.

client-libraries/ruby/Rakefile

@@ -7,7 +7,7 @@ require 'tasks/redis.tasks'
 
 
 GEM = 'redis'
-GEM_VERSION = '0.0.2'
+GEM_VERSION = '0.0.3'
 AUTHORS = ['Ezra Zygmuntowicz', 'Taylor Weibley']
 EMAIL = "ez@engineyard.com"
 HOMEPAGE = "http://github.com/ezmobius/redis-rb"

client-libraries/ruby/examples/test_server.rb

@@ -0,0 +1,13 @@
+require 'socket'
+require 'pp'
+require File.join(File.dirname(__FILE__), '../lib/redis')
+
+#require File.join(File.dirname(__FILE__), '../lib/server')
+
+
+#r = Redis.new
+#loop do
+
+#    puts "--------------------------------------"
+#  sleep 12
+#end

client-libraries/ruby/fill.rb

@@ -1,11 +0,0 @@
-require 'benchmark'
-$:.push File.join(File.dirname(__FILE__), 'lib')
-require 'redis'
-
-times = 20000
-
-@r = Redis.new
-(0..1000000).each{|x|
-    @r[x] = "Hello World"
-    puts x if (x > 0 and x % 10000) == 0
-}

client-libraries/ruby/lib/better_timeout.rb

@@ -163,6 +163,9 @@ end
 # Another name for Timeout::Error, defined for backwards compatibility with
 # earlier versions of timeout.rb.
 
+class Object
+  remove_const(:TimeoutError) if const_defined?(:TimeoutError)
+end
 TimeoutError = Timeout::Error # :nodoc:
 
 if __FILE__ == $0

client-libraries/ruby/lib/dist_redis.rb

@@ -24,7 +24,7 @@ class DistRedis
   end
   
   def method_missing(sym, *args, &blk)
-    if redis = node_for_key(args.first)
+    if redis = node_for_key(args.first.to_s)
       redis.send sym, *args, &blk
     else
       super
@@ -94,11 +94,11 @@ r = DistRedis.new 'localhost:6379', 'localhost:6380', 'localhost:6381', 'localho
   r.push_tail 'listor', 'foo4'
   r.push_tail 'listor', 'foo5'
   
-  p r.pop_tail 'listor'
+  p r.pop_tail('listor')
-  p r.pop_tail 'listor'
+  p r.pop_tail('listor')
-  p r.pop_tail 'listor'
+  p r.pop_tail('listor')
-  p r.pop_tail 'listor'
+  p r.pop_tail('listor')
-  p r.pop_tail 'listor'
+  p r.pop_tail('listor')
   
   puts "key distribution:"
   

client-libraries/ruby/lib/hash_ring.rb

@@ -1,10 +1,15 @@
-require 'digest/md5'
+require 'zlib'
+
 class HashRing
+
+  POINTS_PER_SERVER = 160 # this is the default in libmemcached
+
   attr_reader :ring, :sorted_keys, :replicas, :nodes
+
   # nodes is a list of objects that have a proper to_s representation.
   # replicas indicates how many virtual points should be used pr. node,
   # replicas are required to improve the distribution.
-  def initialize(nodes=[], replicas=3)
+  def initialize(nodes=[], replicas=POINTS_PER_SERVER)
     @replicas = replicas
     @ring = {}
     @nodes = []
@@ -18,7 +23,7 @@ class HashRing
   def add_node(node)
     @nodes << node
     @replicas.times do |i|
-      key = gen_key("#{node}:#{i}")
+      key = Zlib.crc32("#{node}:#{i}")
       @ring[key] = node
       @sorted_keys << key
     end
@@ -27,7 +32,7 @@ class HashRing
   
   def remove_node(node)
     @replicas.times do |i|
-      key = gen_key("#{node}:#{count}")
+      key = Zlib.crc32("#{node}:#{count}")
       @ring.delete(key)
       @sorted_keys.reject! {|k| k == key}
     end
@@ -40,15 +45,9 @@ class HashRing
   
   def get_node_pos(key)
     return [nil,nil] if @ring.size == 0
-    key = gen_key(key)
+    crc = Zlib.crc32(key)
-    nodes = @sorted_keys
+    idx = HashRing.binary_search(@sorted_keys, crc)
-    nodes.size.times do |i|
+    return [@ring[@sorted_keys[idx]], idx]
-      node = nodes[i]
-      if key <= node
-        return [@ring[node], i]
-      end
-    end
-    [@ring[nodes[0]], 0]
   end
   
   def iter_nodes(key)
@@ -59,11 +58,66 @@ class HashRing
     end  
   end
   
-  def gen_key(key)
+  class << self
-    key = Digest::MD5.hexdigest(key)
+
-    ((key[3] << 24) | (key[2] << 16) | (key[1] << 8) | key[0])
+    # gem install RubyInline to use this code
+    # Native extension to perform the binary search within the hashring.
+    # There's a pure ruby version below so this is purely optional
+    # for performance.  In testing 20k gets and sets, the native
+    # binary search shaved about 12% off the runtime (9sec -> 8sec).
+    begin
+      require 'inline'
+      inline do |builder|
+        builder.c <<-EOM
+        int binary_search(VALUE ary, unsigned int r) {
+            int upper = RARRAY_LEN(ary) - 1;
+            int lower = 0;
+            int idx = 0;
+
+            while (lower <= upper) {
+                idx = (lower + upper) / 2;
+
+                VALUE continuumValue = RARRAY_PTR(ary)[idx];
+                unsigned int l = NUM2UINT(continuumValue);
+                if (l == r) {
+                    return idx;
+                }
+                else if (l > r) {
+                    upper = idx - 1;
+                }
+                else {
+                    lower = idx + 1;
+                }
+            }
+            return upper;
+        }
+        EOM
+      end
+    rescue Exception => e
+      # Find the closest index in HashRing with value <= the given value
+      def binary_search(ary, value, &block)
+        upper = ary.size - 1
+        lower = 0
+        idx = 0
+
+        while(lower <= upper) do
+          idx = (lower + upper) / 2
+          comp = ary[idx] <=> value
+
+          if comp == 0
+            return idx
+          elsif comp > 0
+            upper = idx - 1
+          else
+            lower = idx + 1
+          end
+        end
+        return upper
+      end
+
+    end
   end
-  
+
 end
 
 # ring = HashRing.new ['server1', 'server2', 'server3']

client-libraries/ruby/lib/server.rb

@@ -0,0 +1,131 @@
+##
+# This class represents a redis server instance.
+
+class Server
+
+  ##
+  # The amount of time to wait before attempting to re-establish a
+  # connection with a server that is marked dead.
+
+  RETRY_DELAY = 30.0
+
+  ##
+  # The host the redis server is running on.
+
+  attr_reader :host
+
+  ##
+  # The port the redis server is listening on.
+
+  attr_reader :port
+  
+  ##
+  #
+  
+  attr_reader :replica
+
+  ##
+  # The time of next retry if the connection is dead.
+
+  attr_reader :retry
+
+  ##
+  # A text status string describing the state of the server.
+
+  attr_reader :status
+
+  ##
+  # Create a new Redis::Server object for the redis instance
+  # listening on the given host and port.
+
+  def initialize(host, port = DEFAULT_PORT)
+    raise ArgumentError, "No host specified" if host.nil? or host.empty?
+    raise ArgumentError, "No port specified" if port.nil? or port.to_i.zero?
+
+    @host   = host
+    @port   = port.to_i
+
+    @sock   = nil
+    @retry  = nil
+    @status = 'NOT CONNECTED'
+    @timeout = 1
+  end
+
+  ##
+  # Return a string representation of the server object.
+  def inspect
+    "<Redis::Server: %s:%d (%s)>" % [@host, @port, @status]
+  end
+
+  ##
+  # Try to connect to the redis server targeted by this object.
+  # Returns the connected socket object on success or nil on failure.
+
+  def socket
+    return @sock if @sock and not @sock.closed?
+
+    @sock = nil
+
+    # If the host was dead, don't retry for a while.
+    return if @retry and @retry > Time.now
+
+    # Attempt to connect if not already connected.
+    begin
+      @sock = connect_to(@host, @port, @timeout)
+      @sock.setsockopt Socket::IPPROTO_TCP, Socket::TCP_NODELAY, 1
+      @retry  = nil
+      @status = 'CONNECTED'
+    rescue Errno::EPIPE, Errno::ECONNREFUSED => e
+      puts "Socket died... socket: #{@sock.inspect}\n" if $debug
+      @sock.close
+      retry
+    rescue SocketError, SystemCallError, IOError => err
+      puts "Unable to open socket: #{err.class.name}, #{err.message}" if $debug
+      mark_dead err
+    end
+
+    return @sock
+  end
+
+  def connect_to(host, port, timeout=nil)
+    addrs = Socket.getaddrinfo('localhost', nil)
+    addr = addrs.detect { |ad| ad[0] == 'AF_INET' }
+    sock = Socket.new(Socket::AF_INET, Socket::SOCK_STREAM, 0)
+    #addr = Socket.getaddrinfo(host, nil)
+    #sock = Socket.new(Socket.const_get(addr[0][0]), Socket::SOCK_STREAM, 0)
+
+    if timeout
+      secs = Integer(timeout)
+      usecs = Integer((timeout - secs) * 1_000_000)
+      optval = [secs, usecs].pack("l_2")
+      sock.setsockopt Socket::SOL_SOCKET, Socket::SO_RCVTIMEO, optval
+      sock.setsockopt Socket::SOL_SOCKET, Socket::SO_SNDTIMEO, optval
+    end
+    sock.connect(Socket.pack_sockaddr_in('6379', addr[3]))
+    sock
+  end
+
+  ##
+  # Close the connection to the redis server targeted by this
+  # object.  The server is not considered dead.
+
+  def close
+    @sock.close if @sock && !@sock.closed?
+    @sock   = nil
+    @retry  = nil
+    @status = "NOT CONNECTED"
+  end
+
+  ##
+  # Mark the server as dead and close its socket.
+  def mark_dead(error)
+    @sock.close if @sock && !@sock.closed?
+    @sock   = nil
+    @retry  = Time.now #+ RETRY_DELAY
+
+    reason = "#{error.class.name}: #{error.message}"
+    @status = sprintf "%s:%s DEAD (%s), will retry at %s", @host, @port, reason, @retry
+    puts @status
+  end
+
+end

client-libraries/ruby/profile.rb

@@ -0,0 +1,22 @@
+require 'rubygems'
+require 'ruby-prof'
+require "#{File.dirname(__FILE__)}/lib/redis"
+
+
+mode = ARGV.shift || 'process_time'
+n = (ARGV.shift || 200).to_i
+
+r = Redis.new
+RubyProf.measure_mode = RubyProf.const_get(mode.upcase)
+RubyProf.start
+
+n.times do |i|
+  key = "foo#{i}"
+  r[key] = key * 10
+  r[key]
+end
+
+results = RubyProf.stop
+File.open("profile.#{mode}", 'w') do |out|
+  RubyProf::CallTreePrinter.new(results).print(out)
+end

client-libraries/ruby/spec/redis_spec.rb

@@ -12,7 +12,7 @@ class Foo
 end  
 
 describe "redis" do
-  before do
+  before(:each) do
     @r = Redis.new
     @r.select_db(15) # use database 15 for testing so we dont accidentally step on you real data
     @r['foo'] = 'bar'
@@ -20,15 +20,9 @@ describe "redis" do
   
   after do
     @r.keys('*').each {|k| @r.delete k }
+    @r.quit
   end  
 
-  it "should properly marshall objects" do
-   class MyFail; def fail; 'it will' end; end
-
-   @r['fail'] = MyFail.new
-   @r['fail'].fail.should == 'it will'
-
-  end
 
   it "should be able to GET a key" do
     @r['foo'].should == 'bar'
@@ -45,14 +39,14 @@ describe "redis" do
     @r.set_unless_exists 'foo', 'bar'
     @r['foo'].should == 'nik'
   end
-  
+  # 
   it "should be able to INCR(increment) a key" do
     @r.delete('counter')
     @r.incr('counter').should == 1
     @r.incr('counter').should == 2
     @r.incr('counter').should == 3
   end
-  
+  # 
   it "should be able to DECR(decrement) a key" do
     @r.delete('counter')
     @r.incr('counter').should == 1
@@ -62,11 +56,11 @@ describe "redis" do
     @r.decr('counter').should == 1
     @r.decr('counter').should == 0
   end
-  
+  # 
   it "should be able to RANDKEY(return a random key)" do
     @r.randkey.should_not be_nil
   end
-  
+  # 
   it "should be able to RENAME a key" do
     @r.delete 'foo'
     @r.delete 'bar'
@@ -74,23 +68,23 @@ describe "redis" do
     @r.rename! 'foo', 'bar'
     @r['bar'].should == 'hi'
   end
-  
+  # 
   it "should be able to RENAMENX(rename unless the new key already exists) a key" do
     @r.delete 'foo'
     @r.delete 'bar'
     @r['foo'] = 'hi'
     @r['bar'] = 'ohai'
-    lambda {@r.rename 'foo', 'bar'}.should raise_error(RedisError)
+    lambda {@r.rename 'foo', 'bar'}.should raise_error(RedisRenameError)
     @r['bar'].should == 'ohai'
   end
-  
+  # 
   it "should be able to EXISTS(check if key exists)" do
     @r['foo'] = 'nik'
     @r.key?('foo').should be_true
     @r.delete 'foo'
     @r.key?('foo').should be_false
   end
-  
+  # 
   it "should be able to KEYS(glob for keys)" do
     @r.keys("f*").each do |key|
       @r.delete key
@@ -100,14 +94,14 @@ describe "redis" do
     @r['foo'] = 'qux'
     @r.keys("f*").sort.should == ['f','fo', 'foo'].sort
   end
-  
+  # 
   it "should be able to check the TYPE of a key" do
     @r['foo'] = 'nik'
     @r.type?('foo').should == "string"
     @r.delete 'foo'
     @r.type?('foo').should == "none"
   end
-  
+  # 
   it "should be able to push to the head of a list" do
     @r.push_head "list", 'hello'
     @r.push_head "list", 42
@@ -116,14 +110,14 @@ describe "redis" do
     @r.pop_head('list').should == '42'
     @r.delete('list')
   end
-  
+  # 
   it "should be able to push to the tail of a list" do
     @r.push_tail "list", 'hello'
     @r.type?('list').should == "list"
     @r.list_length('list').should == 1
     @r.delete('list')
   end
-  
+  # 
   it "should be able to pop the tail of a list" do
     @r.push_tail "list", 'hello'
     @r.push_tail "list", 'goodbye'
@@ -132,7 +126,7 @@ describe "redis" do
     @r.pop_tail('list').should == 'goodbye'
     @r.delete('list')
   end
-  
+  # 
   it "should be able to pop the head of a list" do
     @r.push_tail "list", 'hello'
     @r.push_tail "list", 'goodbye'
@@ -141,7 +135,7 @@ describe "redis" do
     @r.pop_head('list').should == 'hello'
     @r.delete('list')
   end
-  
+  # 
   it "should be able to get the length of a list" do
     @r.push_tail "list", 'hello'
     @r.push_tail "list", 'goodbye'
@@ -149,7 +143,7 @@ describe "redis" do
     @r.list_length('list').should == 2
     @r.delete('list')
   end
-  
+  # 
   it "should be able to get a range of values from a list" do
     @r.push_tail "list", 'hello'
     @r.push_tail "list", 'goodbye'
@@ -161,7 +155,7 @@ describe "redis" do
     @r.list_range('list', 2, -1).should == ['1', '2', '3']
     @r.delete('list')
   end
-
+  # 
   it "should be able to trim a list" do
     @r.push_tail "list", 'hello'
     @r.push_tail "list", 'goodbye'
@@ -175,7 +169,7 @@ describe "redis" do
     @r.list_range('list', 0, -1).should == ['hello', 'goodbye']
     @r.delete('list')
   end
-  
+  # 
   it "should be able to get a value by indexing into a list" do
     @r.push_tail "list", 'hello'
     @r.push_tail "list", 'goodbye'
@@ -184,7 +178,7 @@ describe "redis" do
     @r.list_index('list', 1).should == 'goodbye'
     @r.delete('list')
   end
-  
+  # 
   it "should be able to set a value by indexing into a list" do
     @r.push_tail "list", 'hello'
     @r.push_tail "list", 'hello'
@@ -194,7 +188,17 @@ describe "redis" do
     @r.list_index('list', 1).should == 'goodbye'
     @r.delete('list')
   end
-  
+  # 
+  it "should be able to remove values from a list LREM" do
+    @r.push_tail "list", 'hello'
+    @r.push_tail "list", 'goodbye'
+    @r.type?('list').should == "list"
+    @r.list_length('list').should == 2
+    @r.list_rm('list', 1, 'hello').should == 1
+    @r.list_range('list', 0, -1).should == ['goodbye']
+    @r.delete('list')
+  end
+  # 
   it "should be able add members to a set" do
     @r.set_add "set", 'key1'
     @r.set_add "set", 'key2'
@@ -203,7 +207,7 @@ describe "redis" do
     @r.set_members('set').sort.should == ['key1', 'key2'].sort
     @r.delete('set')
   end
-  
+  # 
   it "should be able delete members to a set" do
     @r.set_add "set", 'key1'
     @r.set_add "set", 'key2'
@@ -215,7 +219,7 @@ describe "redis" do
     @r.set_members('set').should == Set.new(['key2'])
     @r.delete('set')
   end
-  
+  # 
   it "should be able count the members of a set" do
     @r.set_add "set", 'key1'
     @r.set_add "set", 'key2'
@@ -223,7 +227,7 @@ describe "redis" do
     @r.set_count('set').should == 2
     @r.delete('set')
   end
-  
+  # 
   it "should be able test for set membership" do
     @r.set_add "set", 'key1'
     @r.set_add "set", 'key2'
@@ -234,7 +238,7 @@ describe "redis" do
     @r.set_member?('set', 'notthere').should be_false
     @r.delete('set')
   end
-  
+  # 
   it "should be able to do set intersection" do
     @r.set_add "set", 'key1'
     @r.set_add "set", 'key2'
@@ -242,7 +246,7 @@ describe "redis" do
     @r.set_intersect('set', 'set2').should == Set.new(['key2'])
     @r.delete('set')
   end
-  
+  # 
   it "should be able to do set intersection and store the results in a key" do
     @r.set_add "set", 'key1'
     @r.set_add "set", 'key2'
@@ -251,7 +255,7 @@ describe "redis" do
     @r.set_members('newone').should == Set.new(['key2'])
     @r.delete('set')
   end
-  
+  # 
   it "should be able to do crazy SORT queries" do
     @r['dog_1'] = 'louie'
     @r.push_tail 'dogs', 1
@@ -264,4 +268,50 @@ describe "redis" do
     @r.sort('dogs', :get => 'dog_*', :limit => [0,1]).should == ['louie']
     @r.sort('dogs', :get => 'dog_*', :limit => [0,1], :order => 'desc alpha').should == ['taj']
   end
+  # 
+  it "should provide info" do
+    [:last_save_time, :redis_version, :total_connections_received, :connected_clients, :total_commands_processed, :connected_slaves, :uptime_in_seconds, :used_memory, :uptime_in_days, :changes_since_last_save].each do |x|
+    @r.info.keys.should include(x)
+    end
+  end
+  # 
+  it "should be able to flush the database" do
+    @r['key1'] = 'keyone'
+    @r['key2'] = 'keytwo'
+    @r.keys('*').sort.should == ['foo', 'key1', 'key2'] #foo from before
+    @r.flush_db
+    @r.keys('*').should == []
+  end
+  # 
+  it "should be able to provide the last save time" do
+    savetime = @r.last_save
+    Time.at(savetime).class.should == Time
+    Time.at(savetime).should <= Time.now
+  end
+  
+  it "should be able to MGET keys" do
+    @r['foo'] = 1000
+    @r['bar'] = 2000
+    @r.mget('foo', 'bar').should == ['1000', '2000']
+    @r.mget('foo', 'bar', 'baz').should == ['1000', '2000', nil]
+  end
+  
+  it "should bgsave" do
+     lambda {@r.bgsave}.should_not raise_error(RedisError)
+  end
+  
+  it "should handle multiple servers" do
+    require 'dist_redis'
+    @r = DistRedis.new('localhost:6379', '127.0.0.1:6379')
+    @r.select_db(15) # use database 15 for testing so we dont accidentally step on you real data
+
+    100.times do |idx|
+      @r[idx] = "foo#{idx}"
+    end
+
+    100.times do |idx|
+      @r[idx].should == "foo#{idx}"
+    end
+  end
+
 end

client-libraries/ruby/speed.rb

@@ -0,0 +1,16 @@
+require 'benchmark'
+require "#{File.dirname(__FILE__)}/lib/redis"
+
+r = Redis.new
+n = (ARGV.shift || 20000).to_i
+
+elapsed = Benchmark.realtime do
+  # n sets, n gets
+  n.times do |i|
+    key = "foo#{i}"
+    r[key] = key * 10
+    r[key]
+  end
+end
+
+puts '%.2f Kops' % (2 * n / 1000 / elapsed)

client-libraries/ruby/tasks/redis.tasks.rb

@@ -52,6 +52,12 @@ namespace :redis do
   task :stop do
     RedisRunner.stop
   end
+  
+  desc 'Restart redis'
+  task :restart do
+    RedisRunner.stop
+    RedisRunner.start
+  end
 
   desc 'Attach to redis dtach socket'
   task :attach do
@@ -60,9 +66,12 @@ namespace :redis do
   
   desc 'Install the lastest redis from svn'
   task :install => [:about, :download, :make] do
-    sh 'sudo cp /tmp/redis/redis-server /usr/bin/'
+    %w(redis-benchmark redis-cli redis-server).each do |bin|
-    sh 'sudo cp /tmp/redis/redis-benchmark /usr/bin/'
+      sh "sudo cp /tmp/redis/#{bin} /usr/bin/"
-    puts 'Installed redis-server and redis-benchmark to /usr/bin/'
+    end
+
+    puts "Installed redis-benchmark, redis-cli and redis-server to /usr/bin/"
+        
     unless File.exists?('/etc/redis.conf')
       sh 'sudo cp /tmp/redis/redis.conf /etc/'
       puts "Installed redis.conf to /etc/ \n You should look at this file!"
@@ -76,8 +85,9 @@ namespace :redis do
   
   desc "Download package"
   task :download do
-    system 'svn checkout http://redis.googlecode.com/svn/trunk /tmp/redis' unless File.exists?(RedisRunner.redisdir)
+    sh 'rm -rf /tmp/redis/' if File.exists?("#{RedisRunner.redisdir}/.svn")
-    system 'svn up' if File.exists?("#{RedisRunner.redisdir}/.svn")
+    sh 'git clone git://github.com/antirez/redis.git /tmp/redis' unless File.exists?(RedisRunner.redisdir)
+    sh "cd #{RedisRunner.redisdir} && git pull" if File.exists?("#{RedisRunner.redisdir}/.git")
   end    
 
 end