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#!/usr/bin/env ruby
require 'sinatra'
require 'sinatra/cross_origin'
require "sinatra/reloader"
require 'nanomsg'
require 'zipf'
require 'digest'
require 'json'
# load configuration file and setup global variables
require_relative "#{ARGV[0]}"
$lock = false # lock if currently learning/translating
$last_reply = nil # cache last reply
$confirmed = true # client received translation?
if !FileTest.exist? LOCK_FILE
$db = {} # FIXME: that is supposed to be a database connection
$env = {}
end
$daemons = {
:detokenizer => "/fast_scratch/simianer/lfpe/lfpe/de-tok.rb -a D -S '__ADDR__' -p #{SCRIPTS_DIR} -l #{TARGET_LANG}",
:tokenizer => "/fast_scratch/simianer/lfpe/lfpe/de-tok.rb -a T -S '__ADDR__' -p #{SCRIPTS_DIR} -l #{TARGET_LANG}",
: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__'"
}
# setup Sinatra
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']
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
STDERR.write "shutting down all daemons\n"
$env.each { |name,p|
p[:socket].send "shutdown"
STDERR.write "< #{name} is #{p[:socket].recv}\n"
}
end
def update_database # FIXME: real database
$db['progress'] += 1
j = JSON.generate $db
f = WriteFile.new DB_FILE
f.write j.to_s
f.close
end
def init
# database connection
$db = JSON.parse ReadFile.read DB_FILE
# working directory
`mkdir -p #{WORK_DIR}/g`
# setup environment, start daemons
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
}
`touch #{LOCK_FILE}`
end
init if !FileTest.exist?(LOCK_FILE)
get '/' do
cross_origin
"Nothing to see here."
end
# receive post-edit, send translation
get '/next' do
cross_origin
return "locked" if $lock
$lock = true
key = params[:key] # FIXME: do something with it
if params[:example]
source, reference = params[:example].strip.split(" ||| ")
# tokenize, lowercase
$db['post_edits_raw'] << reference.strip
$env[:tokenizer][:socket].send reference
STDERR.write "[tokenizer] waiting ...\n"
reference = $env[:tokenizer][:socket].recv.force_encoding("UTF-8").strip
STDERR.write "[tokenizer] < received tokenized reference: '#{reference}'\n"
reference.downcase!
# save post-edits
$db['post_edits'] << reference.strip
# 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"
# symmetrize alignment
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"
update_database
end
source = $db['source_segments'][$db['progress']]
raw_source = $db['raw_source_segments'][$db['progress']]
if !source # input is done -> displays 'Thank you!'
STDERR.write ">>> end of input, sending 'fi'\n"
$lock = false
return "fi"
elsif !$confirmed
$lock = false
return $last_reply
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.force_encoding("UTF-8").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.force_encoding "UTF-8"
STDERR.write "[dtrain] < received translation: '#{transl}'\n"
# detokenizer
$env[:detokenizer][:socket].send transl
STDERR.write "[detokenizer] waiting ...\n"
transl = $env[:detokenizer][:socket].recv.force_encoding("UTF-8").strip
STDERR.write "[detokenizer] < received final translation: '#{transl}'\n"
# reply
$last_reply = "#{$db['progress']}\t#{source}\t#{transl.strip}\t#{raw_source}"
$lock = false
$confirmed = false
STDERR.write ">>> response: '#{$last_reply}'"
return $last_reply
end
return "oh oh" # FIXME: do something sensible
end
# client confirms received translation
get '/confirm' do
cross_origin
STDERR.write "confirmed = #{$confirmed}\n"
$confirmed = true
return "#{$confirmed}"
end
# stop daemons and shut down server
get '/shutdown' do
stop_all_daemons
"ready to shutdown"
end
# reset current session
get '/reset' do
return "locked" if $lock
$db = JSON.parse ReadFile.read DB_FILE # FIXME: database ..
$db['post_edits'].clear
$db['post_edits_raw'].clear
update_database
$db['progress'] = 0
$confirmed = true
return "#{$db.to_s}"
end
# load other db file than configured
get '/load/:name' do
return "locked" if $lock
$db = JSON.parse ReadFile.read "/fast_scratch/simianer/lfpe/example_pattr/#{params[:name]}.json.original"
$db['post_edits'].clear
$db['post_edits_raw'].clear
update_database
$db['progress'] = 0
$confirmed = true
"#{$db.to_s}"
end
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