mongo-ruby-driver/lib/mongo/util/tcp_socket.rb

89 lines
2.2 KiB
Ruby

require 'socket'
module Mongo
# Wrapper class for Socket
#
# Emulates TCPSocket with operation and connection timeout
# sans Timeout::timeout
#
class TCPSocket
attr_accessor :pool
def initialize(host, port, op_timeout=nil, connect_timeout=nil)
@op_timeout = op_timeout
@connect_timeout = connect_timeout
# TODO: Prefer ipv6 if server is ipv6 enabled
@host = Socket.getaddrinfo(host, nil, Socket::AF_INET).first[3]
@port = port
@socket_address = Socket.pack_sockaddr_in(@port, @host)
@socket = Socket.new(Socket::AF_INET, Socket::SOCK_STREAM, 0)
connect
end
def connect
# Connect nonblock is broken in current versions of JRuby
if RUBY_PLATFORM == 'java'
require 'timeout'
if @connect_timeout
Timeout::timeout(@connect_timeout, OperationTimeout) do
@socket.connect(@socket_address)
end
else
@socket.connect(@socket_address)
end
else
# Try to connect for @connect_timeout seconds
begin
@socket.connect_nonblock(@socket_address)
rescue Errno::EINPROGRESS
# Block until there is a response or error
resp = IO.select([@socket], [@socket], [@socket], @connect_timeout)
if resp.nil?
raise ConnectionTimeoutError
end
end
# If there was a failure this will raise an Error
begin
@socket.connect_nonblock(@socket_address)
rescue Errno::EISCONN
# Successfully connected
end
end
end
def send(data)
@socket.write(data)
end
def read(maxlen, buffer)
# Block on data to read for @op_timeout seconds
if IO.select([@socket], nil, [@socket], @op_timeout)
begin
@socket.readpartial(maxlen, buffer)
rescue EOFError
return ConnectionError
rescue Errno::ECONNRESET
raise ConnectionFailure
end
else
raise OperationTimeout
end
end
def setsockopt(key, value, n)
@socket.setsockopt(key, value, n)
end
def close
@socket.close
end
def closed?
@socket.closed?
end
end
end