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#!/usr/bin/env ruby
require 'sinatra'
require 'sinatra/cross_origin'
require 'nanomsg'
require 'zipf'
require 'digest'
require_relative "#{ARGV[0]}"
INPUT = ReadFile.readlines INPUT_FILE
`mkdir -p #{WORK_DIR}/g`
def start_daemon cmd, name, addr
STDERR.write "> starting #{name} daemon\n"
cmd.gsub! '__ADDR__', addr
pid = fork do
exec cmd
end
sock = NanoMsg::PairSocket.new
sock.connect addr
STDERR.write "< got #{sock.recv} from #{name}\n"
return sock, pid
end
def stop_all_daemons env
STDERR.write "shutting down all daemons\n"
env.each { |name,p|
p[:socket].send "shutdown"
STDERR.write "< #{name} is #{p[:socket].recv}\n"
}
end
daemons = {
:extractor => "python -m cdec.sa.extract -c #{DATA_DIR}/sa.ini --online -u -S '__ADDR__'",
:aligner_fwd => "#{CDEC_NET}/word-aligner/net_fa -f #{DATA_DIR}/a/forward.params -m #{FWD_MEAN_SRCLEN_MULT} -T #{FWD_TENSION} --sock_url '__ADDR__'",
:aligner_back => "#{CDEC_NET}/word-aligner/net_fa -f #{DATA_DIR}/a/backward.params -m #{BACK_MEAN_SRCLEN_MULT} -T #{BACK_TENSION} --sock_url '__ADDR__'",
:atools => "#{CDEC_NET}/utils/atools_net -c grow-diag-final-and -S '__ADDR__'",
:dtrain => "#{CDEC_NET}/training/dtrain/dtrain_net_interface -c #{DATA_DIR}/dtrain.ini -o #{WORK_DIR}/weights.final -a '__ADDR__'" ##{DTRAIN_EXTRA}"
}
env = {}
port = BEGIN_PORT_RANGE
daemons.each { |name,cmd|
sock, pid = start_daemon cmd, name, "tcp://127.0.0.1:#{port}"
env[name] = { :socket => sock, :pid => pid }
port += 1
}
set :bind, SERVER_IP
set :port, WEB_PORT
set :allow_origin, :any
set :allow_methods, [:get, :post, :options]
set :allow_credentials, true
set :max_age, "1728000"
set :expose_headers, ['Content-Type']
get '/' do
cross_origin
"Nothing to see here."
end
get '/next' do
cross_origin
if params[:example]
source, reference = params[:example].strip.split(" ||| ")
# update weights
grammar = "#{WORK_DIR}/g/#{Digest::SHA256.hexdigest(source)}.grammar"
annotated_source = "<seg grammar=\"#{grammar}\"> #{source} </seg>"
msg = "#{annotated_source} ||| #{reference}"
STDERR.write "[dtrain] > sending '#{msg}' for update\n"
env[:dtrain][:socket].send msg
STDERR.write "[dtrain] waiting for confirmation ...\n"
STDERR.write "[dtrain] < says it's #{env[:dtrain][:socket].recv}\n"
# update grammar extractor
# get forward alignment
msg = "#{source} ||| #{reference}"
STDERR.write "[aligner_fwd] > sending '#{msg}' for forced alignment\n"
env[:aligner_fwd][:socket].send msg
STDERR.write "[aligner_fwd] waiting for alignment ...\n"
a_fwd = env[:aligner_fwd][:socket].recv.strip
STDERR.write "[aligner_fwd] < got alignment: '#{a_fwd}'\n"
# get backward alignment
msg = "#{source} ||| #{reference}"
STDERR.write "[aligner_back] > sending '#{msg}' for forced alignment\n"
env[:aligner_back][:socket].send msg
STDERR.write "[aligner_back] waiting for alignment ...\n"
a_back = env[:aligner_back][:socket].recv.strip
STDERR.write "[aligner_back] < got alignment: '#{a_back}'\n"
# combine alignments
msg = "#{a_fwd} ||| #{a_back}"
STDERR.write "[atools] > sending '#{msg}' to combine alignments\n"
env[:atools][:socket].send msg
STDERR.write "[atools] waiting for alignment ...\n"
a = env[:atools][:socket].recv.strip
STDERR.write "[atools] < got alignment '#{a}'\n"
# actual extractor
msg = "TEST ||| #{source} ||| #{reference} ||| #{a}"
STDERR.write "[extractor] > sending '#{msg}' for learning\n"
env[:extractor][:socket].send "TEST ||| #{source} ||| #{reference} ||| #{a}"
STDERR.write "[extractor] waiting for confirmation ...\n"
STDERR.write "[extractor] < got '#{env[:extractor][:socket].recv}'\n"
end
source = INPUT.shift
if !source # input is done -> displays 'Thank you!'
STDERR.write ">>> end of input, sending 'fi'\n"
"fi"
else # translate next sentence
source.strip!
# generate grammar for current sentence
grammar = "#{WORK_DIR}/g/#{Digest::SHA256.hexdigest(source)}.grammar" # FIXME: keep grammars?
msg = "- ||| #{source} ||| #{grammar}" # FIXME: content identifier useful?
STDERR.write "[extractor] > asking to generate grammar: '#{msg}'\n"
env[:extractor][:socket].send msg
STDERR.write "[extractor] waiting for confirmation ...\n"
STDERR.write "[extractor] < says it generated #{env[:extractor][:socket].recv.strip}\n"
# translation
msg = "act:translate ||| <seg grammar=\"#{grammar}\"> #{source} </seg>"
STDERR.write "[dtrain] > asking to translate: '#{msg}'\n"
env[:dtrain][:socket].send msg
STDERR.write "[dtrain] waiting for translation ...\n"
transl = env[:dtrain][:socket].recv.encode "UTF-8"
STDERR.write "[dtrain] < received translation: '#{transl}'\n"
"#{source}\t#{transl}"
end
end
# stop daemons and shut down server
get '/shutdown' do
stop_all_daemons env
exit
end
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