/usr/lib/ruby/vendor_ruby/redis/connection/synchrony.rb is in ruby-redis 3.2.2-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 | require "redis/connection/command_helper"
require "redis/connection/registry"
require "redis/errors"
require "em-synchrony"
require "hiredis/reader"
class Redis
module Connection
class RedisClient < EventMachine::Connection
include EventMachine::Deferrable
def post_init
@req = nil
@connected = false
@reader = ::Hiredis::Reader.new
end
def connection_completed
@connected = true
succeed
end
def connected?
@connected
end
def receive_data(data)
@reader.feed(data)
loop do
begin
reply = @reader.gets
rescue RuntimeError => err
@req.fail [:error, ProtocolError.new(err.message)]
break
end
break if reply == false
reply = CommandError.new(reply.message) if reply.is_a?(RuntimeError)
@req.succeed [:reply, reply]
end
end
def read
@req = EventMachine::DefaultDeferrable.new
EventMachine::Synchrony.sync @req
end
def send(data)
callback { send_data data }
end
def unbind
@connected = false
if @req
@req.fail [:error, Errno::ECONNRESET]
@req = nil
else
fail
end
end
end
class Synchrony
include Redis::Connection::CommandHelper
def self.connect(config)
if config[:scheme] == "unix"
conn = EventMachine.connect_unix_domain(config[:path], RedisClient)
else
conn = EventMachine.connect(config[:host], config[:port], RedisClient) do |c|
c.pending_connect_timeout = [config[:connect_timeout], 0.1].max
end
end
fiber = Fiber.current
conn.callback { fiber.resume }
conn.errback { fiber.resume :refused }
raise Errno::ECONNREFUSED if Fiber.yield == :refused
instance = new(conn)
instance.timeout = config[:timeout]
instance
end
def initialize(connection)
@connection = connection
end
def connected?
@connection && @connection.connected?
end
def timeout=(timeout)
@timeout = timeout
end
def disconnect
@connection.close_connection
@connection = nil
end
def write(command)
@connection.send(build_command(command))
end
def read
type, payload = @connection.read
if type == :reply
payload
elsif type == :error
raise payload
else
raise "Unknown type #{type.inspect}"
end
end
end
end
end
Redis::Connection.drivers << Redis::Connection::Synchrony
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