1 # -*- encoding: binary -*-
2 # here are internal implementation details, do not use them in your code
6 require 'mogilefs/chunker'
8 module MogileFS::NewFile::Common
10 class RetryableError < MogileFS::Error; end
11 class EmptyResponseError < RetryableError; end
12 class BadResponseError < RetryableError; end
13 class UnparseableResponseError < RetryableError; end
14 class NoStorageNodesError < MogileFS::Error
15 def message; 'Unable to open socket to storage node'; end
17 class NonRetryableError < MogileFS::Error; end
19 MD5_TRAILER_NODES = {} # :nodoc: # EXPERIMENTAL
21 def read_response(sock)
22 tout = @opts[:new_file_max_time] || 3600.0
23 start_time = @opts[:start_time] and tout -= Time.now - start_time
24 case line = sock.timed_read(23, "", tout > 0.0 ? tout : 0)
25 when %r{^HTTP/\d\.\d\s+(2\d\d)\s} # success!
27 raise EmptyResponseError, 'Unable to read response line from server'
28 when %r{^HTTP/\d\.\d\s+(\d+)}
29 raise BadResponseError, "HTTP response status from upload: #$1"
31 raise UnparseableResponseError,
32 "Response line not understood: #{line.inspect}"
36 def create_close(devid, uri, bytes_uploaded)
41 :domain => @opts[:domain],
42 :size => bytes_uploaded,
46 args[:checksum] = "MD5:#{@md5.hexdigest}"
47 elsif String === @opts[:content_md5]
48 hex = @opts[:content_md5].unpack('m')[0].unpack('H*')[0]
49 args[:checksum] = "MD5:#{hex}"
51 args[:checksumverify] = 1 if @opts[:checksumverify]
52 backend = @opts[:backend]
54 # upload could've taken a long time, ping and try to ensure socket
55 # is valid to minimize (but not completely eliminate) the chance
56 # create_close hits a stale socket (while reading the response after
57 # writing to it) and becomes non-retryable. We treat create_close
58 # specially as its less idempotent than any other command
59 # (even other non-idempotent ones). There may be no hope of retrying
60 # the upload at all if data was streamed and calling create_close
61 # twice will hurt us...
64 backend.create_close(args)
68 # aggressive keepalive settings on Linux + Ruby 1.9.2+
70 :TCP_KEEPIDLE => 60, # seconds time before keepalive packet is sent
72 :TCP_KEEPCNT => 2, # number of retries
75 req_consts = TCP_KEEPALIVE.keys
76 if (Socket.constants & req_consts).size == req_consts.size
77 def set_socket_options(sock)
78 sock.setsockopt(:SOL_SOCKET, :SO_KEEPALIVE, 1)
79 TCP_KEEPALIVE.each do |k,v|
80 sock.setsockopt(:IPPROTO_TCP, k, v)
84 def set_socket_options(sock)
85 sock.setsockopt(Socket::SOL_SOCKET, Socket::SO_KEEPALIVE, 1)