require 'hash_ring'
class DistRedis
attr_reader :ring
- def initialize(*servers)
- srvs = []
- servers.each do |s|
- server, port = s.split(':')
- srvs << Redis.new(:host => server, :port => port)
+ def initialize(opts={})
+ hosts = []
+
+ db = opts[:db] || nil
+ timeout = opts[:timeout] || nil
+
+ raise Error, "No hosts given" unless opts[:hosts]
+
+ opts[:hosts].each do |h|
+ host, port = h.split(':')
+ hosts << Redis.new(:host => host, :port => port, :db => db, :timeout => timeout, :db => db)
end
- @ring = HashRing.new srvs
+
+ @ring = HashRing.new hosts
end
def node_for_key(key)
@redis = redis
@commands = []
end
-
- def execute_command(data)
- @commands << data
- write_and_read if @commands.size >= BUFFER_SIZE
- end
-
- def finish
- write_and_read
+
+ def call_command(command)
+ @commands << command
end
-
- def write_and_read
- @redis.execute_command(@commands.join, true)
- @redis.read_socket
+
+ def execute
+ @redis.call_command(@commands)
@commands.clear
end
require 'socket'
-require 'set'
-require File.join(File.dirname(__FILE__),'server')
require File.join(File.dirname(__FILE__),'pipeline')
-class RedisError < StandardError
-end
-class RedisRenameError < StandardError
+begin
+ if (RUBY_VERSION >= '1.9')
+ require 'timeout'
+ RedisTimer = Timeout
+ else
+ require 'system_timer'
+ RedisTimer = SystemTimer
+ end
+rescue LoadError
+ RedisTimer = nil
end
class Redis
- ERR = "-".freeze
- OK = 'OK'.freeze
- PONG = 'PONG'.freeze
- SINGLE = '+'.freeze
- BULK = '$'.freeze
- MULTI = '*'.freeze
- INT = ':'.freeze
-
- attr_reader :server
-
- def initialize(opts={})
- @opts = {:host => 'localhost', :port => '6379', :db => 0}.merge(opts)
- $debug = @opts[:debug]
- @db = @opts[:db]
- @server = Server.new(@opts[:host], @opts[:port], (@opts[:timeout]||10))
- end
-
- def pipelined
- pipeline = Pipeline.new(self)
- yield pipeline
- pipeline.finish
- end
-
- def to_s
- "#{host}:#{port} -> #{@db}"
- end
-
- def port
- @opts[:port]
- end
-
- def host
- @opts[:host]
- end
-
- def quit
- execute_command("QUIT\r\n", true)
- end
-
- def ping
- execute_command("PING\r\n") == PONG
- end
-
- def select_db(index)
- @db = index
- execute_command("SELECT #{index}\r\n")
- end
-
- def flush_db
- execute_command("FLUSHDB\r\n") == OK
- end
-
- def flush_all
- puts "Warning!\nFlushing *ALL* databases!\n5 Seconds to Hit ^C!"
- trap('INT') {quit; return false}
- sleep 5
- execute_command("FLUSHALL\r\n") == OK
- end
-
- def last_save
- execute_command("LASTSAVE\r\n").to_i
- end
-
- def bgsave
- execute_command("BGSAVE\r\n") == OK
- end
-
- def info
- info = {}
- x = execute_command("INFO\r\n")
- x.each_line do |kv|
- k,v = kv.split(':', 2)
- k,v = k.chomp, v = v.chomp
- info[k.to_sym] = v
- end
- info
- end
-
- def keys(glob)
- execute_command("KEYS #{glob}\r\n").split(' ')
- end
-
- def rename!(oldkey, newkey)
- execute_command("RENAME #{oldkey} #{newkey}\r\n")
- end
-
- def rename(oldkey, newkey)
- case execute_command("RENAMENX #{oldkey} #{newkey}\r\n")
- when -1
- raise RedisRenameError, "source key: #{oldkey} does not exist"
- when 0
- raise RedisRenameError, "target key: #{oldkey} already exists"
- when -3
- raise RedisRenameError, "source and destination keys are the same"
- when 1
- true
+ BulkCommands = {
+ "set"=>true, "setnx"=>true, "rpush"=>true, "lpush"=>true, "lset"=>true,
+ "lrem"=>true, "sadd"=>true, "srem"=>true, "sismember"=>true,
+ "echo"=>true, "getset"=>true, "smove"=>true
+ }
+
+ ConvertToBool = lambda do |r|
+ case r
+ when 0 then false
+ when 1 then true
+ else r
+ end
end
- end
-
- def key?(key)
- execute_command("EXISTS #{key}\r\n") == 1
- end
-
- def delete(key)
- execute_command("DEL #{key}\r\n") == 1
- end
-
- def [](key)
- get(key)
- end
- def get(key)
- execute_command("GET #{key}\r\n")
- end
-
- def mget(*keys)
- execute_command("MGET #{keys.join(' ')}\r\n")
- end
-
- def incr(key, increment=nil)
- if increment
- execute_command("INCRBY #{key} #{increment}\r\n")
- else
- execute_command("INCR #{key}\r\n")
- end
- end
-
- def decr(key, decrement=nil)
- if decrement
- execute_command("DECRBY #{key} #{decrement}\r\n")
- else
- execute_command("DECR #{key}\r\n")
- end
- end
-
- def randkey
- execute_command("RANDOMKEY\r\n")
- end
-
- def list_length(key)
- case i = execute_command("LLEN #{key}\r\n")
- when -2
- raise RedisError, "key: #{key} does not hold a list value"
- else
- i
+ ReplyProcessor = {
+ "exists" => ConvertToBool,
+ "sismember"=> ConvertToBool,
+ "sadd"=> ConvertToBool,
+ "srem"=> ConvertToBool,
+ "smove"=> ConvertToBool,
+ "move"=> ConvertToBool,
+ "setnx"=> ConvertToBool,
+ "del"=> ConvertToBool,
+ "renamenx"=> ConvertToBool,
+ "expire"=> ConvertToBool,
+ "keys" => lambda{|r| r.split(" ")},
+ "info" => lambda{|r|
+ info = {}
+ r.each_line {|kv|
+ k,v = kv.split(":",2).map{|x| x.chomp}
+ info[k.to_sym] = v
+ }
+ info
+ }
+ }
+
+ Aliases = {
+ "flush_db" => "flushdb",
+ "flush_all" => "flushall",
+ "last_save" => "lastsave",
+ "key?" => "exists",
+ "delete" => "del",
+ "randkey" => "randomkey",
+ "list_length" => "llen",
+ "push_tail" => "rpush",
+ "push_head" => "lpush",
+ "pop_tail" => "rpop",
+ "pop_head" => "lpop",
+ "list_set" => "lset",
+ "list_range" => "lrange",
+ "list_trim" => "ltrim",
+ "list_index" => "lindex",
+ "list_rm" => "lrem",
+ "set_add" => "sadd",
+ "set_delete" => "srem",
+ "set_count" => "scard",
+ "set_member?" => "sismember",
+ "set_members" => "smembers",
+ "set_intersect" => "sinter",
+ "set_intersect_store" => "sinterstore",
+ "set_inter_store" => "sinterstore",
+ "set_union" => "sunion",
+ "set_union_store" => "sunionstore",
+ "set_diff" => "sdiff",
+ "set_diff_store" => "sdiffstore",
+ "set_move" => "smove",
+ "set_unless_exists" => "setnx",
+ "rename_unless_exists" => "renamenx",
+ "type?" => "type"
+ }
+
+ def initialize(opts={})
+ @host = opts[:host] || '127.0.0.1'
+ @port = opts[:port] || 6379
+ @db = opts[:db] || 0
+ @timeout = opts[:timeout] || 5
+ $debug = opts[:debug] || false
+ connect_to_server
end
- end
-
- def type?(key)
- execute_command("TYPE #{key}\r\n")
- end
-
- def push_tail(key, val)
- execute_command("RPUSH #{key} #{value_to_wire(val)}\r\n")
- end
-
- def push_head(key, val)
- execute_command("LPUSH #{key} #{value_to_wire(val)}\r\n")
- end
-
- def pop_head(key)
- execute_command("LPOP #{key}\r\n")
- end
-
- def pop_tail(key)
- execute_command("RPOP #{key}\r\n")
- end
-
- def list_set(key, index, val)
- execute_command("LSET #{key} #{index} #{value_to_wire(val)}\r\n") == OK
- end
-
- def list_range(key, start, ending)
- execute_command("LRANGE #{key} #{start} #{ending}\r\n")
- end
- def list_trim(key, start, ending)
- execute_command("LTRIM #{key} #{start} #{ending}\r\n")
- end
-
- def list_index(key, index)
- execute_command("LINDEX #{key} #{index}\r\n")
- end
-
- def list_rm(key, count, val)
- case num = execute_command("LREM #{key} #{count} #{value_to_wire(val)}\r\n")
- when -1
- raise RedisError, "key: #{key} does not exist"
- when -2
- raise RedisError, "key: #{key} does not hold a list value"
- else
- num
+ def to_s
+ "Redis Client connected to #{@host}:#{@port} against DB #{@db}"
end
- end
- def set_add(key, member)
- case execute_command("SADD #{key} #{value_to_wire(member)}\r\n")
- when 1
- true
- when 0
- false
- when -2
- raise RedisError, "key: #{key} contains a non set value"
+ def connect_to_server
+ @sock = connect_to(@host,@port,@timeout == 0 ? nil : @timeout)
+ call_command(["select",@db]) if @db != 0
end
- end
- def set_delete(key, member)
- case execute_command("SREM #{key} #{value_to_wire(member)}\r\n")
- when 1
- true
- when 0
- false
- when -2
- raise RedisError, "key: #{key} contains a non set value"
+ def connect_to(host, port, timeout=nil)
+ # We support connect() timeout only if system_timer is availabe
+ # or if we are running against Ruby >= 1.9
+ # Timeout reading from the socket instead will be supported anyway.
+ if @timeout != 0 and RedisTimer
+ begin
+ sock = TCPSocket.new(host, port)
+ rescue Timeout::Error
+ @sock = nil
+ raise Timeout::Error, "Timeout connecting to the server"
+ end
+ else
+ sock = TCPSocket.new(host, port)
+ end
+ sock.setsockopt Socket::IPPROTO_TCP, Socket::TCP_NODELAY, 1
+
+ # If the timeout is set we set the low level socket options in order
+ # to make sure a blocking read will return after the specified number
+ # of seconds. This hack is from memcached ruby client.
+ 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
end
- end
- def set_count(key)
- case i = execute_command("SCARD #{key}\r\n")
- when -2
- raise RedisError, "key: #{key} contains a non set value"
- else
- i
+ def method_missing(*argv)
+ call_command(argv)
end
- end
- def set_member?(key, member)
- case execute_command("SISMEMBER #{key} #{value_to_wire(member)}\r\n")
- when 1
- true
- when 0
- false
- when -2
- raise RedisError, "key: #{key} contains a non set value"
+ def call_command(argv)
+ puts argv.inspect if $debug
+ # this wrapper to raw_call_command handle reconnection on socket
+ # error. We try to reconnect just one time, otherwise let the error
+ # araise.
+ connect_to_server if !@sock
+ begin
+ raw_call_command(argv)
+ rescue Errno::ECONNRESET
+ @sock.close
+ connect_to_server
+ raw_call_command(argv)
+ end
end
- end
-
- def set_members(key)
- Set.new(execute_command("SMEMBERS #{key}\r\n"))
- end
-
- def set_intersect(*keys)
- Set.new(execute_command("SINTER #{keys.join(' ')}\r\n"))
- end
- def set_inter_store(destkey, *keys)
- execute_command("SINTERSTORE #{destkey} #{keys.join(' ')}\r\n")
- end
-
- def set_union(*keys)
- Set.new(execute_command("SUNION #{keys.join(' ')}\r\n"))
- end
-
- def set_union_store(destkey, *keys)
- execute_command("SUNIONSTORE #{destkey} #{keys.join(' ')}\r\n")
- end
-
- def set_diff(*keys)
- Set.new(execute_command("SDIFF #{keys.join(' ')}\r\n"))
- end
-
- def set_diff_store(destkey, *keys)
- execute_command("SDIFFSTORE #{destkey} #{keys.join(' ')}\r\n")
- end
+ def raw_call_command(argvp)
+ pipeline = argvp[0].is_a?(Array)
+
+ unless pipeline
+ argvv = [argvp]
+ else
+ argvv = argvp
+ end
+
+ command = ''
+
+ argvv.each do |argv|
+ bulk = nil
+ argv[0] = argv[0].to_s.downcase
+ argv[0] = Aliases[argv[0]] if Aliases[argv[0]]
+ if BulkCommands[argv[0]] and argv.length > 1
+ bulk = argv[-1].to_s
+ argv[-1] = bulk.length
+ end
+ command << argv.join(' ') + "\r\n"
+ command << bulk + "\r\n" if bulk
+ end
+
+ @sock.write(command)
+
+ results = argvv.map do |argv|
+ processor = ReplyProcessor[argv[0]]
+ processor ? processor.call(read_reply) : read_reply
+ end
+
+ return pipeline ? results : results[0]
+ end
- def set_move(srckey, destkey, member)
- execute_command("SMOVE #{srckey} #{destkey} #{value_to_wire(member)}\r\n") == 1
- end
+ def select(*args)
+ raise "SELECT not allowed, use the :db option when creating the object"
+ end
- def sort(key, opts={})
- cmd = "SORT #{key}"
- cmd << " BY #{opts[:by]}" if opts[:by]
- cmd << " GET #{[opts[:get]].flatten * ' GET '}" if opts[:get]
- cmd << " INCR #{opts[:incr]}" if opts[:incr]
- cmd << " DEL #{opts[:del]}" if opts[:del]
- cmd << " DECR #{opts[:decr]}" if opts[:decr]
- cmd << " #{opts[:order]}" if opts[:order]
- cmd << " LIMIT #{opts[:limit].join(' ')}" if opts[:limit]
- cmd << "\r\n"
- execute_command(cmd)
- end
-
- def []=(key, val)
- set(key,val)
- end
-
- def set(key, val, expiry=nil)
- s = execute_command("SET #{key} #{value_to_wire(val)}\r\n") == OK
- return expire(key, expiry) if s && expiry
- s
- end
+ def [](key)
+ get(key)
+ end
- def dbsize
- execute_command("DBSIZE\r\n")
- end
+ def []=(key,value)
+ set(key,value)
+ end
- def expire(key, expiry=nil)
- execute_command("EXPIRE #{key} #{expiry}\r\n") == 1
- end
+ def set(key, value, expiry=nil)
+ call_command([:set, key, value])
+ expire(key, expiry) unless expiry.nil?
+ end
- def set_unless_exists(key, val)
- execute_command("SETNX #{key} #{value_to_wire(val)}\r\n") == 1
- end
-
- def bulk_reply
- begin
- x = read
- puts "bulk_reply read value is #{x.inspect}" if $debug
- return x
- rescue => e
- puts "error in bulk_reply #{e}" if $debug
- nil
+ def sort(key, opts={})
+ cmd = []
+ cmd << "SORT #{key}"
+ cmd << "BY #{opts[:by]}" if opts[:by]
+ cmd << "GET #{[opts[:get]].flatten * ' GET '}" if opts[:get]
+ cmd << "#{opts[:order]}" if opts[:order]
+ cmd << "LIMIT #{opts[:limit].join(' ')}" if opts[:limit]
+ call_command(cmd)
end
- end
-
- def write(data)
- puts "writing: #{data}" if $debug
- @socket.write(data)
- end
-
- def read(length = 0)
- length = read_proto unless length > 0
- res = @socket.read(length)
- puts "read is #{res.inspect}" if $debug
- res
- end
-
- def multi_bulk
- res = read_proto
- puts "mb res is #{res.inspect}" if $debug
- list = []
- Integer(res).times do
- vf = get_response
- puts "curren vf is #{vf.inspect}" if $debug
- list << vf
- puts "current list is #{list.inspect}" if $debug
+
+ def incr(key,increment=nil)
+ call_command(increment ? ["incrby",key,increment] : ["incr",key])
end
- list
- end
-
- def get_reply
- begin
- r = read(1)
- raise RedisError if (r == "\r" || r == "\n")
- rescue RedisError
- retry
+
+ def decr(key,decrement=nil)
+ call_command(decrement ? ["decrby",key,decrement] : ["decr",key])
end
- r
- end
-
- def status_code_reply
- begin
- res = read_proto
- if res.index('-') == 0
- raise RedisError, res
- else
- true
- end
- rescue RedisError
- raise RedisError
+
+ # Ruby defines a now deprecated type method so we need to override it here
+ # since it will never hit method_missing
+ def type(key)
+ call_command(['type', key])
end
- end
-
- def execute_command(command, ignore_response=false)
- ss = server.socket
- unless ss.object_id == @socket.object_id
- @socket = ss
- puts "Socket changed, selecting DB" if $debug
- unless command[0..6] == 'SELECT'
- #BTM - Ugh- DRY but better than infinite recursion
- write("SELECT #{@db}\r\n")
- get_response
- end
- end
- write(command)
- get_response unless ignore_response
- rescue Errno::ECONNRESET, Errno::EPIPE, NoMethodError, Timeout::Error => e
- raise RedisError, "Connection error"
- end
- def get_response
- rtype = get_reply
- puts "reply_type is #{rtype.inspect}" if $debug
- case rtype
- when SINGLE
- single_line
- when BULK
- bulk_reply
- when MULTI
- multi_bulk
- when INT
- integer_reply
- when ERR
- raise RedisError, single_line
- else
- raise RedisError, "Unknown response.."
- end
- end
-
- def integer_reply
- Integer(read_proto)
- end
-
- def single_line
- buff = ""
- while buff[-2..-1] != "\r\n"
- buff << read(1)
+ def quit
+ call_command(['quit'])
+ rescue Errno::ECONNRESET
end
- puts "single_line value is #{buff[0..-3].inspect}" if $debug
- buff[0..-3]
- end
-
- def read_socket
- begin
- socket = @server.socket
- while res = socket.read(8096)
- break if res.size != 8096
- end
- #Timeout or server down
- rescue Errno::ECONNRESET, Errno::EPIPE, Errno::ECONNREFUSED => e
- server.close
- puts "Client (#{server.inspect}) disconnected from server: #{e.inspect}\n" if $debug
- retry
- rescue Timeout::Error => e
- #BTM - Ignore this error so we don't go into an endless loop
- puts "Client (#{server.inspect}) Timeout\n" if $debug
- #Server down
- rescue NoMethodError => e
- puts "Client (#{server.inspect}) tryin server that is down: #{e.inspect}\n Dying!" if $debug
- raise Errno::ECONNREFUSED
- #exit
+
+ def pipelined(&block)
+ pipeline = Pipeline.new self
+ yield pipeline
+ pipeline.execute
end
- end
-
- def read_proto
- res = @socket.readline
- x = res.chomp
- puts "read_proto is #{x.inspect}\n\n" if $debug
- x.to_i
- end
- private
- def value_to_wire(value)
- value_str = value.to_s
- if value_str.respond_to?(:bytesize)
- value_size = value_str.bytesize
- else
- value_size = value_str.size
+ def read_reply
+ # We read the first byte using read() mainly because gets() is
+ # immune to raw socket timeouts.
+ begin
+ rtype = @sock.read(1)
+ rescue Errno::EAGAIN
+ # We want to make sure it reconnects on the next command after the
+ # timeout. Otherwise the server may reply in the meantime leaving
+ # the protocol in a desync status.
+ @sock = nil
+ raise Errno::EAGAIN, "Timeout reading from the socket"
+ end
+
+ raise Errno::ECONNRESET,"Connection lost" if !rtype
+ line = @sock.gets
+ case rtype
+ when "-"
+ raise "-"+line.strip
+ when "+"
+ line.strip
+ when ":"
+ line.to_i
+ when "$"
+ bulklen = line.to_i
+ return nil if bulklen == -1
+ data = @sock.read(bulklen)
+ @sock.read(2) # CRLF
+ data
+ when "*"
+ objects = line.to_i
+ return nil if bulklen == -1
+ res = []
+ objects.times {
+ res << read_reply
+ }
+ res
+ else
+ raise "Protocol error, got '#{rtype}' as initial reply byte"
+ end
end
- "#{value_size}\r\n#{value_str}"
- end
-
end
+++ /dev/null
-begin
- # Timeout code is courtesy of Ruby memcache-client
- # http://github.com/mperham/memcache-client/tree
- # Try to use the SystemTimer gem instead of Ruby's timeout library
- # when running on something that looks like Ruby 1.8.x. See:
- # http://ph7spot.com/articles/system_timer
- # We don't want to bother trying to load SystemTimer on jruby and
- # ruby 1.9+.
- if defined?(JRUBY_VERSION) || (RUBY_VERSION >= '1.9')
- require 'timeout'
- RedisTimer = Timeout
- else
- require 'system_timer'
- RedisTimer = SystemTimer
- end
-rescue LoadError => e
- puts "[redis-rb] Could not load SystemTimer gem, falling back to Ruby's slower/unsafe timeout library: #{e.message}"
- require 'timeout'
- RedisTimer = Timeout
-end
-
-##
-# This class represents a redis server instance.
-
-class Server
-
- ##
- # The host the redis server is running on.
-
- attr_reader :host
-
- ##
- # The port the redis server is listening on.
-
- attr_reader :port
-
- ##
- # 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, timeout = 10)
- 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
- @status = 'NOT CONNECTED'
- @timeout = timeout
- 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 socket_alive?
- close
- # Attempt to connect if not already connected.
- begin
- @sock = connect_to(@host, @port, @timeout)
- @sock.setsockopt Socket::IPPROTO_TCP, Socket::TCP_NODELAY, 1
- @status = 'CONNECTED'
- rescue Errno::EPIPE, Errno::ECONNREFUSED => e
- puts "Socket died... : #{e}\n" if $debug
- retry
- rescue SocketError, SystemCallError, IOError => err
- puts "Unable to open socket: #{err.class.name}, #{err.message}" if $debug
- end
- @sock
- end
-
- def connect_to(host, port, timeout=nil)
- socket = TCPSocket.new(host, port)
- socket.set_encoding(Encoding::BINARY) if socket.respond_to?(:set_encoding)
- if timeout
- socket.instance_eval <<-EOR
- alias :blocking_readline :readline
- def readline(*args)
- RedisTimer.timeout(#{timeout}) do
- self.blocking_readline(*args)
- end
- end
- alias :blocking_read :read
- def read(*args)
- RedisTimer.timeout(#{timeout}) do
- self.blocking_read(*args)
- end
- end
- alias :blocking_write :write
- def write(*args)
- RedisTimer.timeout(#{timeout}) do
- self.blocking_write(*args)
- end
- end
- EOR
- end
- socket
- end
-
- # Close the connection to the redis server targeted by this
- # object.
-
- def close
- @sock.close if !@sock.nil? && !@sock.closed?
- @sock = nil
- @status = "NOT CONNECTED"
- end
-
- private
- def socket_alive?
- #BTM - TODO - FileStat is borked under JRuby
- unless defined?(JRUBY_VERSION)
- !@sock.nil? && !@sock.closed? && @sock.stat.readable?
- else
- !@sock.nil? && !@sock.closed?
- end
- end
-end
Gem::Specification.new do |s|
s.name = %q{redis}
- s.version = "0.0.3.5"
+ s.version = "0.0.5"
s.required_rubygems_version = Gem::Requirement.new(">= 0") if s.respond_to? :required_rubygems_version=
s.authors = ["Ezra Zygmuntowicz", "Taylor Weibley", "Matthew Clark"]
end
after(:each) do
- @r.keys('*').each {|k| @r.delete k}
+ @r.keys('*').each {|k| @r.del k}
end
after(:all) do
end
it 'should be able to PING' do
- @r.ping.should == true
+ @r.ping.should == 'PONG'
end
it "should be able to GET a key" do
@r['foo'].should == nil
end
- it "should be able to SETNX(set_unless_exists)" do
+ it "should be able to SETNX" do
@r['foo'] = 'nik'
@r['foo'].should == 'nik'
- @r.set_unless_exists 'foo', 'bar'
+ @r.setnx 'foo', 'bar'
@r['foo'].should == 'nik'
end
#
- it "should be able to INCR(increment) a key" do
- @r.delete('counter')
+ it "should be able to INCR a key" do
+ @r.del('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')
+ it "should be able to DECR a key" do
+ @r.del('counter')
@r.incr('counter').should == 1
@r.incr('counter').should == 2
@r.incr('counter').should == 3
@r.decr('counter', 2).should == 0
end
#
- it "should be able to RANDKEY(return a random key)" do
+ it "should be able to RANDKEY" do
@r.randkey.should_not be_nil
end
#
it "should be able to RENAME a key" do
- @r.delete 'foo'
- @r.delete 'bar'
+ @r.del 'foo'
+ @r.del'bar'
@r['foo'] = 'hi'
- @r.rename! 'foo', 'bar'
+ @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'
+ it "should be able to RENAMENX a key" do
+ @r.del 'foo'
+ @r.del 'bar'
@r['foo'] = 'hi'
@r['bar'] = 'ohai'
- lambda {@r.rename 'foo', 'bar'}.should raise_error(RedisRenameError)
+ @r.renamenx 'foo', 'bar'
@r['bar'].should == 'ohai'
end
#
#
it "should be able to EXPIRE a key" do
@r['foo'] = 'bar'
- @r.expire('foo', 1)
+ @r.expire 'foo', 1
@r['foo'].should == "bar"
sleep 2
@r['foo'].should == nil
end
#
- it "should be able to EXISTS(check if key exists)" do
+ it "should be able to EXISTS" do
@r['foo'] = 'nik'
- @r.key?('foo').should be_true
- @r.delete 'foo'
- @r.key?('foo').should be_false
+ @r.exists('foo').should be_true
+ @r.del 'foo'
+ @r.exists('foo').should be_false
end
#
- it "should be able to KEYS(glob for keys)" do
- @r.keys("f*").each do |key|
- @r.delete key
- end
+ it "should be able to KEYS" do
+ @r.keys("f*").each { |key| @r.del key }
@r['f'] = 'nik'
@r['fo'] = 'nak'
@r['foo'] = 'qux'
@r.keys("f*").sort.should == ['f','fo', 'foo'].sort
end
- #
+ #BTM - TODO
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"
+ @r.type('foo').should == "string"
+ @r.del '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
- @r.type?('list').should == "list"
- @r.list_length('list').should == 2
- @r.pop_head('list').should == '42'
- @r.delete('list')
+ it "should be able to push to the head of a list (LPUSH)" do
+ @r.lpush "list", 'hello'
+ @r.lpush "list", 42
+ @r.type('list').should == "list"
+ @r.llen('list').should == 2
+ @r.lpop('list').should == '42'
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')
+ it "should be able to push to the tail of a list (RPUSH)" do
+ @r.rpush "list", 'hello'
+ @r.type('list').should == "list"
+ @r.llen('list').should == 1
end
#
- it "should be able to pop the tail of a list" do
- @r.push_tail "list", 'hello'
- @r.push_tail "list", 'goodbye'
- @r.type?('list').should == "list"
- @r.list_length('list').should == 2
- @r.pop_tail('list').should == 'goodbye'
- @r.delete('list')
+ it "should be able to pop the tail of a list (RPOP)" do
+ @r.rpush "list", 'hello'
+ @r.rpush"list", 'goodbye'
+ @r.type('list').should == "list"
+ @r.llen('list').should == 2
+ @r.rpop('list').should == 'goodbye'
end
#
- it "should be able to pop the head of a list" do
- @r.push_tail "list", 'hello'
- @r.push_tail "list", 'goodbye'
- @r.type?('list').should == "list"
- @r.list_length('list').should == 2
- @r.pop_head('list').should == 'hello'
- @r.delete('list')
+ it "should be able to pop the head of a list (LPOP)" do
+ @r.rpush "list", 'hello'
+ @r.rpush "list", 'goodbye'
+ @r.type('list').should == "list"
+ @r.llen('list').should == 2
+ @r.lpop('list').should == 'hello'
end
#
- it "should be able to get the length of a list" do
- @r.push_tail "list", 'hello'
- @r.push_tail "list", 'goodbye'
- @r.type?('list').should == "list"
- @r.list_length('list').should == 2
- @r.delete('list')
+ it "should be able to get the length of a list (LLEN)" do
+ @r.rpush "list", 'hello'
+ @r.rpush "list", 'goodbye'
+ @r.type('list').should == "list"
+ @r.llen('list').should == 2
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'
- @r.push_tail "list", '1'
- @r.push_tail "list", '2'
- @r.push_tail "list", '3'
- @r.type?('list').should == "list"
- @r.list_length('list').should == 5
- @r.list_range('list', 2, -1).should == ['1', '2', '3']
- @r.delete('list')
+ it "should be able to get a range of values from a list (LRANGE)" do
+ @r.rpush "list", 'hello'
+ @r.rpush "list", 'goodbye'
+ @r.rpush "list", '1'
+ @r.rpush "list", '2'
+ @r.rpush "list", '3'
+ @r.type('list').should == "list"
+ @r.llen('list').should == 5
+ @r.lrange('list', 2, -1).should == ['1', '2', '3']
end
#
- it "should be able to trim a list" do
- @r.push_tail "list", 'hello'
- @r.push_tail "list", 'goodbye'
- @r.push_tail "list", '1'
- @r.push_tail "list", '2'
- @r.push_tail "list", '3'
- @r.type?('list').should == "list"
- @r.list_length('list').should == 5
- @r.list_trim 'list', 0, 1
- @r.list_length('list').should == 2
- @r.list_range('list', 0, -1).should == ['hello', 'goodbye']
- @r.delete('list')
+ it "should be able to trim a list (LTRIM)" do
+ @r.rpush "list", 'hello'
+ @r.rpush "list", 'goodbye'
+ @r.rpush "list", '1'
+ @r.rpush "list", '2'
+ @r.rpush "list", '3'
+ @r.type('list').should == "list"
+ @r.llen('list').should == 5
+ @r.ltrim 'list', 0, 1
+ @r.llen('list').should == 2
+ @r.lrange('list', 0, -1).should == ['hello', 'goodbye']
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'
- @r.type?('list').should == "list"
- @r.list_length('list').should == 2
- @r.list_index('list', 1).should == 'goodbye'
- @r.delete('list')
+ it "should be able to get a value by indexing into a list (LINDEX)" do
+ @r.rpush "list", 'hello'
+ @r.rpush "list", 'goodbye'
+ @r.type('list').should == "list"
+ @r.llen('list').should == 2
+ @r.lindex('list', 1).should == 'goodbye'
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'
- @r.type?('list').should == "list"
- @r.list_length('list').should == 2
- @r.list_set('list', 1, 'goodbye').should be_true
- @r.list_index('list', 1).should == 'goodbye'
- @r.delete('list')
+ it "should be able to set a value by indexing into a list (LSET)" do
+ @r.rpush "list", 'hello'
+ @r.rpush "list", 'hello'
+ @r.type('list').should == "list"
+ @r.llen('list').should == 2
+ @r.lset('list', 1, 'goodbye').should == 'OK'
+ @r.lindex('list', 1).should == 'goodbye'
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')
+ it "should be able to remove values from a list (LREM)" do
+ @r.rpush "list", 'hello'
+ @r.rpush "list", 'goodbye'
+ @r.type('list').should == "list"
+ @r.llen('list').should == 2
+ @r.lrem('list', 1, 'hello').should == 1
+ @r.lrange('list', 0, -1).should == ['goodbye']
end
#
- it "should be able add members to a set" do
- @r.set_add "set", 'key1'
- @r.set_add "set", 'key2'
- @r.type?('set').should == "set"
- @r.set_count('set').should == 2
- @r.set_members('set').sort.should == ['key1', 'key2'].sort
- @r.delete('set')
+ it "should be able add members to a set (SADD)" do
+ @r.sadd "set", 'key1'
+ @r.sadd "set", 'key2'
+ @r.type('set').should == "set"
+ @r.scard('set').should == 2
+ @r.smembers('set').sort.should == ['key1', 'key2'].sort
end
#
- it "should be able delete members to a set" do
- @r.set_add "set", 'key1'
- @r.set_add "set", 'key2'
- @r.type?('set').should == "set"
- @r.set_count('set').should == 2
- @r.set_members('set').should == Set.new(['key1', 'key2'])
- @r.set_delete('set', 'key1')
- @r.set_count('set').should == 1
- @r.set_members('set').should == Set.new(['key2'])
- @r.delete('set')
+ it "should be able delete members to a set (SREM)" do
+ @r.sadd "set", 'key1'
+ @r.sadd "set", 'key2'
+ @r.type('set').should == "set"
+ @r.scard('set').should == 2
+ @r.smembers('set').sort.should == ['key1', 'key2'].sort
+ @r.srem('set', 'key1')
+ @r.scard('set').should == 1
+ @r.smembers('set').should == ['key2']
end
#
- it "should be able count the members of a set" do
- @r.set_add "set", 'key1'
- @r.set_add "set", 'key2'
- @r.type?('set').should == "set"
- @r.set_count('set').should == 2
- @r.delete('set')
+ it "should be able count the members of a set (SCARD)" do
+ @r.sadd "set", 'key1'
+ @r.sadd "set", 'key2'
+ @r.type('set').should == "set"
+ @r.scard('set').should == 2
end
#
- it "should be able test for set membership" do
- @r.set_add "set", 'key1'
- @r.set_add "set", 'key2'
- @r.type?('set').should == "set"
- @r.set_count('set').should == 2
- @r.set_member?('set', 'key1').should be_true
- @r.set_member?('set', 'key2').should be_true
- @r.set_member?('set', 'notthere').should be_false
- @r.delete('set')
+ it "should be able test for set membership (SISMEMBER)" do
+ @r.sadd "set", 'key1'
+ @r.sadd "set", 'key2'
+ @r.type('set').should == "set"
+ @r.scard('set').should == 2
+ @r.sismember('set', 'key1').should be_true
+ @r.sismember('set', 'key2').should be_true
+ @r.sismember('set', 'notthere').should be_false
end
#
- it "should be able to do set intersection" do
- @r.set_add "set", 'key1'
- @r.set_add "set", 'key2'
- @r.set_add "set2", 'key2'
- @r.set_intersect('set', 'set2').should == Set.new(['key2'])
- @r.delete('set')
+ it "should be able to do set intersection (SINTER)" do
+ @r.sadd "set", 'key1'
+ @r.sadd "set", 'key2'
+ @r.sadd "set2", 'key2'
+ @r.sinter('set', 'set2').should == ['key2']
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'
- @r.set_add "set2", 'key2'
- @r.set_inter_store('newone', 'set', 'set2').should == 'OK'
- @r.set_members('newone').should == Set.new(['key2'])
- @r.delete('set')
- @r.delete('set2')
+ it "should be able to do set intersection and store the results in a key (SINTERSTORE)" do
+ @r.sadd "set", 'key1'
+ @r.sadd "set", 'key2'
+ @r.sadd "set2", 'key2'
+ @r.sinterstore('newone', 'set', 'set2').should == 1
+ @r.smembers('newone').should == ['key2']
end
#
- it "should be able to do set union" do
- @r.set_add "set", 'key1'
- @r.set_add "set", 'key2'
- @r.set_add "set2", 'key2'
- @r.set_add "set2", 'key3'
- @r.set_union('set', 'set2').should == Set.new(['key1','key2','key3'])
- @r.delete('set')
- @r.delete('set2')
+ it "should be able to do set union (SUNION)" do
+ @r.sadd "set", 'key1'
+ @r.sadd "set", 'key2'
+ @r.sadd "set2", 'key2'
+ @r.sadd "set2", 'key3'
+ @r.sunion('set', 'set2').sort.should == ['key1','key2','key3'].sort
end
#
- it "should be able to do set union and store the results in a key" do
- @r.set_add "set", 'key1'
- @r.set_add "set", 'key2'
- @r.set_add "set2", 'key2'
- @r.set_add "set2", 'key3'
- @r.set_union_store('newone', 'set', 'set2').should == 'OK'
- @r.set_members('newone').should == Set.new(['key1','key2','key3'])
- @r.delete('set')
- @r.delete('set2')
+ it "should be able to do set union and store the results in a key (SUNIONSTORE)" do
+ @r.sadd "set", 'key1'
+ @r.sadd "set", 'key2'
+ @r.sadd "set2", 'key2'
+ @r.sadd "set2", 'key3'
+ @r.sunionstore('newone', 'set', 'set2').should == 3
+ @r.smembers('newone').sort.should == ['key1','key2','key3'].sort
end
#
- it "should be able to do set difference" do
- @r.set_add "set", 'a'
- @r.set_add "set", 'b'
- @r.set_add "set2", 'b'
- @r.set_add "set2", 'c'
- @r.set_diff('set', 'set2').should == Set.new(['a'])
- @r.delete('set')
- @r.delete('set2')
+ it "should be able to do set difference (SDIFF)" do
+ @r.sadd "set", 'a'
+ @r.sadd "set", 'b'
+ @r.sadd "set2", 'b'
+ @r.sadd "set2", 'c'
+ @r.sdiff('set', 'set2').should == ['a']
end
#
- it "should be able to do set difference and store the results in a key" do
- @r.set_add "set", 'a'
- @r.set_add "set", 'b'
- @r.set_add "set2", 'b'
- @r.set_add "set2", 'c'
- @r.set_diff_store('newone', 'set', 'set2')
- @r.set_members('newone').should == Set.new(['a'])
- @r.delete('set')
- @r.delete('set2')
+ it "should be able to do set difference and store the results in a key (SDIFFSTORE)" do
+ @r.sadd "set", 'a'
+ @r.sadd "set", 'b'
+ @r.sadd "set2", 'b'
+ @r.sadd "set2", 'c'
+ @r.sdiffstore('newone', 'set', 'set2')
+ @r.smembers('newone').should == ['a']
end
#
- it "should be able move elements from one set to another" do
- @r.set_add 'set1', 'a'
- @r.set_add 'set1', 'b'
- @r.set_add 'set2', 'x'
- @r.set_move('set1', 'set2', 'a').should == true
- @r.set_member?('set2', 'a').should == true
+ it "should be able move elements from one set to another (SMOVE)" do
+ @r.sadd 'set1', 'a'
+ @r.sadd 'set1', 'b'
+ @r.sadd 'set2', 'x'
+ @r.smove('set1', 'set2', 'a').should be_true
+ @r.sismember('set2', 'a').should be_true
@r.delete('set1')
end
#
it "should be able to do crazy SORT queries" do
@r['dog_1'] = 'louie'
- @r.push_tail 'dogs', 1
+ @r.rpush 'dogs', 1
@r['dog_2'] = 'lucy'
- @r.push_tail 'dogs', 2
+ @r.rpush 'dogs', 2
@r['dog_3'] = 'max'
- @r.push_tail 'dogs', 3
+ @r.rpush 'dogs', 3
@r['dog_4'] = 'taj'
- @r.push_tail 'dogs', 4
+ @r.rpush 'dogs', 4
@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 be able to handle array of :get using SORT" do
@r['dog:1:name'] = 'louie'
@r['dog:1:breed'] = 'mutt'
- @r.push_tail 'dogs', 1
+ @r.rpush 'dogs', 1
@r['dog:2:name'] = 'lucy'
@r['dog:2:breed'] = 'poodle'
- @r.push_tail 'dogs', 2
+ @r.rpush 'dogs', 2
@r['dog:3:name'] = 'max'
@r['dog:3:breed'] = 'hound'
- @r.push_tail 'dogs', 3
+ @r.rpush 'dogs', 3
@r['dog:4:name'] = 'taj'
@r['dog:4:breed'] = 'terrier'
- @r.push_tail 'dogs', 4
+ @r.rpush 'dogs', 4
@r.sort('dogs', :get => ['dog:*:name', 'dog:*:breed'], :limit => [0,1]).should == ['louie', 'mutt']
@r.sort('dogs', :get => ['dog:*:name', 'dog:*:breed'], :limit => [0,1], :order => 'desc alpha').should == ['taj', 'terrier']
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('*').sort.should == ['foo', 'key1', 'key2'].sort #foo from before
+ @r.flushdb
@r.keys('*').should == []
end
#
- it "should be able to provide the last save time" do
- savetime = @r.last_save
+ it "should be able to provide the last save time (LASTSAVE)" do
+ savetime = @r.lastsave
Time.at(savetime).class.should == Time
Time.at(savetime).should <= Time.now
end
end
it "should bgsave" do
- lambda {@r.bgsave}.should_not raise_error(RedisError)
+ @r.bgsave.should == 'OK'
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
+ @r = DistRedis.new(:hosts=> ['localhost:6379', '127.0.0.1:6379'], :db => 15)
100.times do |idx|
@r[idx] = "foo#{idx}"
it "should be able to pipeline writes" do
@r.pipelined do |pipeline|
- pipeline.push_head "list", "hello"
- pipeline.push_head "list", 42
+ pipeline.lpush 'list', "hello"
+ pipeline.lpush 'list', 42
end
- @r.type?('list').should == "list"
- @r.list_length('list').should == 2
- @r.pop_head('list').should == '42'
- @r.delete('list')
+ @r.type('list').should == "list"
+ @r.llen('list').should == 2
+ @r.lpop('list').should == '42'
end
- it "should select db on connection"
- it "should re-select db on reconnection"
end
+++ /dev/null
-require File.dirname(__FILE__) + '/spec_helper'
-
-describe "Server" do
- before(:each) do
- @server = Server.new 'localhost', '6379'
- end
-
- it "should checkout active connections" do
- threads = []
- 10.times do
- threads << Thread.new do
- lambda {
- socket = @server.socket
- socket.close
- socket.write("INFO\r\n")
- socket.read(1)
- }.should_not raise_error(Exception)
- end
- end
- end
-
-end
+++ /dev/null
-# RubyRedis is an alternative implementatin of Ruby client library written
-# by Salvatore Sanfilippo.
-#
-# The aim of this library is to create an alternative client library that is
-# much simpler and does not implement every command explicitly but uses
-# method_missing instead.
-
-require 'socket'
-require 'set'
-
-begin
- if (RUBY_VERSION >= '1.9')
- require 'timeout'
- RedisTimer = Timeout
- else
- require 'system_timer'
- RedisTimer = SystemTimer
- end
-rescue LoadError
- RedisTimer = nil
-end
-
-class RedisClient
- BulkCommands = {
- "set"=>true, "setnx"=>true, "rpush"=>true, "lpush"=>true, "lset"=>true,
- "lrem"=>true, "sadd"=>true, "srem"=>true, "sismember"=>true,
- "echo"=>true, "getset"=>true, "smove"=>true
- }
-
- ConvertToBool = lambda{|r| r == 0 ? false : r}
-
- ReplyProcessor = {
- "exists" => ConvertToBool,
- "sismember"=> ConvertToBool,
- "sadd"=> ConvertToBool,
- "srem"=> ConvertToBool,
- "smove"=> ConvertToBool,
- "move"=> ConvertToBool,
- "setnx"=> ConvertToBool,
- "del"=> ConvertToBool,
- "renamenx"=> ConvertToBool,
- "expire"=> ConvertToBool,
- "keys" => lambda{|r| r.split(" ")},
- "info" => lambda{|r|
- info = {}
- r.each_line {|kv|
- k,v = kv.split(":",2).map{|x| x.chomp}
- info[k.to_sym] = v
- }
- info
- }
- }
-
- Aliases = {
- "flush_db" => "flushdb",
- "flush_all" => "flushall",
- "last_save" => "lastsave",
- "key?" => "exists",
- "delete" => "del",
- "randkey" => "randomkey",
- "list_length" => "llen",
- "push_tail" => "rpush",
- "push_head" => "lpush",
- "pop_tail" => "rpop",
- "pop_head" => "lpop",
- "list_set" => "lset",
- "list_range" => "lrange",
- "list_trim" => "ltrim",
- "list_index" => "lindex",
- "list_rm" => "lrem",
- "set_add" => "sadd",
- "set_delete" => "srem",
- "set_count" => "scard",
- "set_member?" => "sismember",
- "set_members" => "smembers",
- "set_intersect" => "sinter",
- "set_intersect_store" => "sinterstore",
- "set_inter_store" => "sinterstore",
- "set_union" => "sunion",
- "set_union_store" => "sunionstore",
- "set_diff" => "sdiff",
- "set_diff_store" => "sdiffstore",
- "set_move" => "smove",
- "set_unless_exists" => "setnx",
- "rename_unless_exists" => "renamenx"
- }
-
- def initialize(opts={})
- @host = opts[:host] || '127.0.0.1'
- @port = opts[:port] || 6379
- @db = opts[:db] || 0
- @timeout = opts[:timeout] || 0
- connect_to_server
- end
-
- def to_s
- "Redis Client connected to #{@host}:#{@port} against DB #{@db}"
- end
-
- def connect_to_server
- @sock = connect_to(@host,@port,@timeout == 0 ? nil : @timeout)
- call_command(["select",@db]) if @db != 0
- end
-
- def connect_to(host, port, timeout=nil)
- # We support connect() timeout only if system_timer is availabe
- # or if we are running against Ruby >= 1.9
- # Timeout reading from the socket instead will be supported anyway.
- if @timeout != 0 and RedisTimer
- begin
- sock = TCPSocket.new(host, port, 0)
- rescue Timeout::Error
- @sock = nil
- raise Timeout::Error, "Timeout connecting to the server"
- end
- else
- sock = TCPSocket.new(host, port, 0)
- end
- sock.setsockopt Socket::IPPROTO_TCP, Socket::TCP_NODELAY, 1
-
- # If the timeout is set we set the low level socket options in order
- # to make sure a blocking read will return after the specified number
- # of seconds. This hack is from memcached ruby client.
- 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
- end
-
- def method_missing(*argv)
- call_command(argv)
- end
-
- def call_command(argv)
- # this wrapper to raw_call_command handle reconnection on socket
- # error. We try to reconnect just one time, otherwise let the error
- # araise.
- connect_to_server if !@sock
- begin
- raw_call_command(argv)
- rescue Errno::ECONNRESET
- @sock.close
- connect_to_server
- raw_call_command(argv)
- end
- end
-
- def raw_call_command(argv)
- bulk = nil
- argv[0] = argv[0].to_s.downcase
- argv[0] = Aliases[argv[0]] if Aliases[argv[0]]
- if BulkCommands[argv[0]] and argv.length > 1
- bulk = argv[-1].to_s
- argv[-1] = bulk.length
- end
- @sock.write(argv.join(" ")+"\r\n")
- @sock.write(bulk+"\r\n") if bulk
-
- # Post process the reply if needed
- processor = ReplyProcessor[argv[0]]
- processor ? processor.call(read_reply) : read_reply
- end
-
- def select(*args)
- raise "SELECT not allowed, use the :db option when creating the object"
- end
-
- def [](key)
- get(key)
- end
-
- def []=(key,value)
- set(key,value)
- end
-
- def sort(key, opts={})
- cmd = []
- cmd << "SORT #{key}"
- cmd << "BY #{opts[:by]}" if opts[:by]
- cmd << "GET #{[opts[:get]].flatten * ' GET '}" if opts[:get]
- cmd << "#{opts[:order]}" if opts[:order]
- cmd << "LIMIT #{opts[:limit].join(' ')}" if opts[:limit]
- call_command(cmd)
- end
-
- def incr(key,increment=nil)
- call_command(increment ? ["incrby",key,increment] : ["incr",key])
- end
-
- def decr(key,decrement=nil)
- call_command(decrement ? ["decrby",key,decrement] : ["decr",key])
- end
-
- def read_reply
- # We read the first byte using read() mainly because gets() is
- # immune to raw socket timeouts.
- begin
- rtype = @sock.read(1)
- rescue Errno::EAGAIN
- # We want to make sure it reconnects on the next command after the
- # timeout. Otherwise the server may reply in the meantime leaving
- # the protocol in a desync status.
- @sock = nil
- raise Errno::EAGAIN, "Timeout reading from the socket"
- end
-
- raise Errno::ECONNRESET,"Connection lost" if !rtype
- line = @sock.gets
- case rtype
- when "-"
- raise "-"+line.strip
- when "+"
- line.strip
- when ":"
- line.to_i
- when "$"
- bulklen = line.to_i
- return nil if bulklen == -1
- data = @sock.read(bulklen)
- @sock.read(2) # CRLF
- data
- when "*"
- objects = line.to_i
- return nil if bulklen == -1
- res = []
- objects.times {
- res << read_reply
- }
- res
- else
- raise "Protocol error, got '#{rtype}' as initial reply byte"
- end
- end
-end
projects / redis.git / commitdiff
