/usr/lib/ruby/vendor_ruby/moneta/server.rb is in ruby-moneta 0.7.20-2.2.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 | require 'socket'
module Moneta
# Moneta server to be used together with Moneta::Adapters::Client
# @api public
class Server
# @param [Hash] options
# @option options [Integer] :port (9000) TCP port
# @option options [String] :socket Alternative Unix socket file name
def initialize(store, options = {})
@store = store
@server = start(options)
@ios = [@server]
@clients = {}
@running = false
end
# Is the server running
#
# @return [Boolean] true if the server is running
def running?
@running
end
# Run the server
#
# @note This method blocks!
def run
raise 'Already running' if @running
@stop = false
@running = true
begin
until @stop
mainloop
end
ensure
File.unlink(@socket) if @socket
end
end
# Stop the server
def stop
raise 'Not running' unless @running
@stop = true
@server.close
@server = nil
end
private
TIMEOUT = 1
MAXSIZE = 0x100000
def mainloop
if ios = IO.select(@ios, nil, @ios, TIMEOUT)
ios[2].each do |io|
io.close
delete_client(io)
end
ios[0].each do |io|
if io == @server
if client = @server.accept
@ios << client
@clients[client] = ''
end
elsif io.closed? || io.eof?
delete_client(io)
else
handle(io, @clients[io] << io.readpartial(0xFFFF))
end
end
end
rescue SignalException => ex
warn "Moneta::Server - #{ex.message}"
raise if ex.signo == 15 || ex.signo == 2 # SIGTERM or SIGINT
rescue Exception => ex
warn "Moneta::Server - #{ex.message}"
end
def delete_client(io)
@ios.delete(io)
@clients.delete(io)
end
def pack(o)
s = Marshal.dump(o)
[s.bytesize].pack('N') << s
end
def handle(io, buffer)
buffer = @clients[io]
return if buffer.bytesize < 8 # At least 4 bytes for the marshalled array
size = buffer[0,4].unpack('N').first
if size > MAXSIZE
delete_client(io)
return
end
return if buffer.bytesize < 4 + size
buffer.slice!(0, 4)
method, *args = Marshal.load(buffer.slice!(0, size))
case method
when :key?, :load, :delete, :increment, :create, :features
io.write(pack @store.send(method, *args))
when :store, :clear
@store.send(method, *args)
io.write(@nil ||= pack(nil))
else
raise 'Invalid method call'
end
rescue IOError => ex
warn "Moneta::Server - #{ex.message}" unless ex.message =~ /closed/
delete_client(io)
rescue Exception => ex
warn "Moneta::Server - #{ex.message}"
io.write(pack Exception.new(ex.message))
end
def start(options)
if @socket = options[:socket]
begin
UNIXServer.open(@socket)
rescue Errno::EADDRINUSE
if client = (UNIXSocket.open(@socket) rescue nil)
client.close
raise
end
File.unlink(@socket)
tries ||= 0
(tries += 1) < 3 ? retry : raise
end
else
TCPServer.open(options[:host] || '127.0.0.1', options[:port] || 9000)
end
end
end
end
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