summaryrefslogtreecommitdiff
path: root/server-neural.rb
blob: 6d6c9d9f6099e96237bf93c29bcc30d2377e959d (plain)
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
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
#!/usr/bin/env ruby

require 'sinatra'
require 'sinatra/cross_origin'
require 'sinatra/reloader'
require 'nanomsg'
require 'zipf'
require 'json'
require 'tilt/haml'
require 'uri'
require 'rack'

# #############################################################################
# Load configuration file and setup global variables
# #############################################################################
require_relative "#{ARGV[0]}"        # load configuration for this session
$lock                    = false     # lock if currently learning/translating
$last_reply              = nil       # cache last reply
$last_processed_postedit = ""        # to show to the user
$confirmed               = true      # client received translation?
if !FileTest.exist? LOCK_FILE        # locked?
  $db  = {}                          # data file (JSON format)
  $env = {}                          # environment variables (socket connections to daemons)
end
$status                  = "Idle"    # current server status

# #############################################################################
# Daemons
# #############################################################################
DIR="/srv/postedit"
$daemons = {
  :tokenizer        => "#{DIR}/lfpe/util/nanomsg_wrapper.rb -a tokenize   -S '__ADDR__' -e #{EXTERNAL} -l #{TARGET_LANG}",
  :tokenizer_src    => "#{DIR}/lfpe/util/nanomsg_wrapper.rb -a tokenize   -S '__ADDR__' -e #{EXTERNAL} -l #{SOURCE_LANG}",
  :detokenizer      => "#{DIR}/lfpe/util/nanomsg_wrapper.rb -a detokenize -S '__ADDR__' -e #{EXTERNAL} -l #{TARGET_LANG}",
  :detokenizer_src  => "#{DIR}/lfpe/util/nanomsg_wrapper.rb -a detokenize -S '__ADDR__' -e #{EXTERNAL} -l #{SOURCE_LANG}",
  :bpe              => "#{DIR}/lfpe/util/nanomsg_wrapper.rb -a bpe        -S '__ADDR__' -e #{EXTERNAL} -b #{SESSION_DIR}/bpe", #-B #{SESSION_DIR}/#{TARGET_LANG}",
  #:debpe            => "#{DIR}/lfpe/util/nanomsg_wrapper.rb -a de-bpe     -S '__ADDR__' -e #{EXTERNAL}",
  :truecaser        => "#{DIR}/lfpe/util/nanomsg_wrapper.rb -a truecase   -S '__ADDR__' -e #{EXTERNAL} -t #{SESSION_DIR}/truecase.model",
  #:lamtram          => "#{DIR}/online-lamtram/src/lamtram/lamtram-train-online --master_addr '__ADDR__' --model_in #{SESSION_DIR}/model --model_out #{SESSION_DIR}/model.out --dropout 0.5 --learning_rate 0.5 --beam_size 1 --size_limit 100 --unk_penalty 1.0 --word_penalty 2.5"
}

$remote_daemons = {
  :lamtram => true
}

# #############################################################################
# Set-up Sinatra
# #############################################################################
set :server,            'thin'
set :bind,              SERVER_IP
set :port,              WEB_PORT
set :allow_origin,      :any
set :allow_methods,     [:get, :post]
set :allow_credentials, true
set :max_age,           "1728000"
set :expose_headers,    ['Content-Type']
set :public_folder,     File.dirname(__FILE__) + '/static'

Rack::Utils.key_space_limit = 68719476736

# #############################################################################
# Helper functions
# #############################################################################
def logmsg name, msg
  STDERR.write "[#{name}] #{msg}\n"
end

def start_daemon cmd, name, addr
  logmsg :server, "starting #{name} daemon"
  cmd.gsub! '__ADDR__', addr

  sock = NanoMsg::PairSocket.new
  sock.connect addr
  pid = spawn(cmd)
  Process.detach pid
  logmsg :server, "#{name} detached"
  logmsg :server, "< got #{sock.recv} from #{name}"

  return sock, pid
end

def stop_daemon key
    $env[key][:socket].send "shutdown"                   # every daemon shuts down
                                                 # after receiving this keyword
    logmsg :server, "< #{key} is #{$env[key][:socket].recv}"
end

def stop_all_daemons
  $status = "Shutting down"                                            # status
  logmsg :server, "shutting down all daemons"
  $env.each_key { |k|
    stop_daemon k
  }

  $status = "Ready to shutdown"                                        # status
end

def update_database reset=false
  $status = "Updating database"                                        # status
  if !reset
    $db['progress'] += 1
  else
    $db['progress'] = 0
  end
  j = JSON.generate $db
  f = WriteFile.new DB_FILE
  f.write j.to_s
  f.close

  $status = "Updated database"                                         # status
end

def init
  $status = "Initialization"                                           # status
  $db = JSON.parse ReadFile.read DB_FILE                  # data from JSON file
                                                            # working directory
  `mkdir -p #{WORK_DIR}/`
  `mkdir #{WORK_DIR}/g`

  if OLM
    `mkfifo #{WORK_DIR}/refp`
  end

                                             # setup environment, start daemons
  port = BEGIN_PORT_RANGE
  $daemons.each { |name,cmd|
    logmsg :server, "starting #{name} daemon"
    sock, pid = start_daemon cmd, name, "tcp://147.142.207.34:#{port}"
    $env[name] = { :socket => sock, :pid => pid }
    port += 1
    logmsg :server, "starting #{name} daemon done"
  }
  $remote_daemons.each { |name,_|
    addr = "tcp://147.142.207.34:#{port}"
    sock = NanoMsg::PairSocket.new
    sock.bind addr 
    logmsg :server, "waiting for remote daemon #{name} on #{addr}"
    logmsg :server, "< got #{sock.recv} from remote #{name}"
    $env[name] =  { :socket => sock, :pid => nil }
    port += 1
  }

  send_recv :truecaser, "lOaD iT"
  send_recv :bpe, "blablablubbbla"
  #send_recv :debpe, "asdf@@ asd"

                                                                   #  lock file
  `touch #{LOCK_FILE}`
  $status = "Initialized"                                              # status
end

def send_recv daemon, msg                            # simple pair communcation
  socket = $env[daemon][:socket]                     # query -> answer
  logmsg daemon, "> sending message: '#{msg}'"
  socket.send msg
  logmsg daemon, "waiting ..."
  ans = socket.recv.force_encoding("UTF-8").strip
  logmsg daemon, "< received answer: '#{ans}'"

  return ans
end

# #############################################################################
# Run init() [just once]
# #############################################################################
init if !FileTest.exist?(LOCK_FILE)

# #############################################################################
# Routes
# #############################################################################
get '/' do
  cross_origin                           # enable Cross-Origin Resource Sharing

  return ""                                                            # return
end

post '/next' do
  cross_origin

  $status = "Received request"                                         # status
  reply = request.body.read
  Thread.new { process_next reply }
end

def process_next reply
  $status = "Processing request"                                       # status
  data = JSON.parse(URI.decode(reply))
  if $lock
    $status = "Locked"                                                 # status
    return
  end
  $lock = true                                                           # lock
  if !data['name'] || data['name'] == ""
    $status = "Error: Name not given."
    return
  end
  if data['key'] != SESSION_KEY
    $status =  "Error: Key mismatch (#{data['key']}, #{SESSION_KEY})"
    return
  end

  if data["EDIT"]
    $status = "Processing post-edit"                                   # status
    logmsg :server, "received post-edit"
                                                        # 0. save raw post-edit
    source = data["source_value"]
    post_edit = data["post_edit"]
    $status  = "Processing post-edit ..."                              # status
    post_edit.strip!
    post_edit.lstrip!
                                                                      # fill db
    $db['feedback']           << reply
    $db['post_edits_raw']     << post_edit
    $db['durations']          << data['duration'].to_f
    $db['durations_rating']   << data['duration_rating'].to_f
    $db['count_click']        << data['count_click'].to_i
    $db['count_kbd']          << data['count_kbd'].to_i
    $db['post_edits_display'] << send_recv(:detokenizer, post_edit)
    $db['ratings']            << data['rating'].to_f
    $last_processed_postedit = $db['post_edits_display'].last
    # 1. tokenize
      $status = "Tokenizing post-edit"                                 # status
      logmsg :server, "tokenizing post-edit"
      post_edit = send_recv :tokenizer, post_edit
    # 2. truecase
      $status = "Truecasing post-edit"                                 # status
      logmsg :server, "truecasing post-edit"
      post_edit = send_recv :truecaser, post_edit
    # 3. bpe
      $status = "BPE'ing post-edit"
      logmsg :server, "bpe'ing post-edit"
      post_edit = send_recv :bpe, post_edit
    # 4. save processed post-edits
      $status = "saving processed post-edit"                           # status
      logmsg :db, "saving processed post-edit"
      $db['post_edits'] << post_edit.strip
    if data['nochange']
      logmsg :server, "no change"
    end
    if !NOLEARN && !NOMT
      $status = "Updating model"                                      # status
      logmsg :server, "updating ..."
      $status = "Learning from post-edit"                              # status
      send_recv :lamtram, "act:learn ||| #{source} ||| #{post_edit}"
      $db['updated'] << true
    end
    logmsg :db, "updating database"
    update_database
  end
  $status = "Getting next data to translate"                           # status
  source     = $db['source_segments'][$db['progress']]
  raw_source = $db['raw_source_segments'][$db['progress']]
  if !source                                                    # input is done
    begin
      stop_daemon :lamtram
    rescue
    end
    logmsg :server, "end of input, sending 'fin'"
    $lock = false
    $status = "Ready"                                                  # status
    $last_reply = {'fin'=>true,
      'processed_postedit'=>$last_processed_postedit
    }.to_json
    return                                                             # return
  elsif !$confirmed \
    || ($confirmed && $last_reply && $last_reply!="" \
        && !data["EDIT"])                                     # send last reply
    logmsg :server, "locked, re-sending last reply"
    logmsg :server, "last_reply: '#{$last_reply}'"
    $lock = false
    $status = "Ready"                                                  # status
    return
  else
    source = source.strip.lstrip
    raw_source = raw_source.strip.lstrip

    if NOMT                                                         # 0. no mt?
      $lock = false
      logmsg :server, "no mt"
      obj = Hash.new
      obj["progress"]   = $db["progress"]
      obj["source"]     = source
      obj["raw_source"] = raw_source
      obj["processed_postedit"] = $last_processed_postedit
      $last_reply = obj.to_json
      $status = "Ready"                                                # status
      return
    end

    $status = "Translating"                                            # status
    msg = "act:translate ||| #{source}"
    obj = Hash.new
    obj["transl_bpe"] = send_recv :lamtram, msg
    obj["transl"] = send_recv(:truecaser, obj["transl_bpe"].gsub(/((@@ )|@@$)/, "")).strip
    $status = "Processing raw translation"                             # status
    obj["transl_detok"] = send_recv(:detokenizer, obj["transl"]).strip
    obj["source"]     = source
    obj["progress"]   = $db['progress']
    obj["raw_source"] = raw_source
    logmsg :server, "#{obj["transl_bpe"]}"
    $db["mt_raw_bpe"]       << obj["transl_bpe"]
    $db["mt_raw"]           << obj["transl"]
    $db["mt"]               << obj["transl_detok"]
    obj["processed_postedit"] = $last_processed_postedit
                                                                     # 5. reply
    $last_reply = obj.to_json
    $lock = false
    $confirmed = false
    logmsg :server, "response: '#{$last_reply}'"
    $status = "Ready"                                                  # status
    return                                                             # return
  end
end

get '/fetch' do                                                    # fetch next
  cross_origin
  return "Locked" if $locked
  return $last_reply
end

get '/fetch_processed_postedit/:i' do                     # processed post-edit
  cross_origin
  i = params[:i].to_i
  return $db['post_edits_display'][i]
end

get '/progress' do                                        # processed post-edit
  cross_origin
  return $db['progress']
end

get '/status' do                                                 # check status
  cross_origin
  logmsg :server, "status: #{$status}"
  return "Locked" if $locked
  return $status
end

get '/status_debug' do                                                 # check status
  cross_origin
  logmsg :server, "status: #{$status}"
  return "[##{$db["progress"]}] Locked" if $locked
  return "[##{$db["progress"]}] #{$status}"
end

get '/confirm' do                        # client confirms received translation
  cross_origin
  $confirmed = true
  logmsg :server, "confirmed = #{$confirmed}"

  return "#{$confirmed}"
end

get '/reset_progress' do                                # reset current session
  return "locked" if $lock
  $db = JSON.parse ReadFile.read DB_FILE
  $db['post_edits'].clear
  $db['post_edits_raw'].clear
  $db['post_edits_display'].clear
  $db['mt'].clear
  $db['mt_raw'].clear
  $db['updated'].clear
  $db['durations'].clear
  $db['durations_rating'].clear
  $db['feedback'].clear
  $db['progress'] = -1
  $db['count_kbd'].clear
  $db['count_click'].clear
  $db['ratings'].clear
  update_database true
  $confirmed = true
  $last_reply = nil

  return "progress reset: done"
end

get '/shutdown' do                          # stop daemons and shut down server
  logmsg :server, "shutting down daemons"
  stop_all_daemons

  return "stopped all daemons, ready to shutdown"
end

get '/summary' do
  logmsg :server, "showing summary"

  data = JSON.parse ReadFile.read(DB_FILE).force_encoding("UTF-8")

  bleu_scores = []
  data["post_edits"].each_with_index { |pe,j|
    f = Tempfile.new "lfpe-summary-pe"
    g = Tempfile.new "lfpe-summary-ref"
    f.write pe+"\n"
    g.write data["references"][j]+"\n"
    f.close
    g.close
    bleu_scores << [1.0, (`#{CDEC}/mteval/fast_score -i #{f.path} -r #{g.path} -m ibm_bleu 2>/dev/null`.to_f).round(2)].min
    f.unlink
    g.unlink
  }

  ter_scores = []
  data["post_edits"].each_with_index { |pe,j|
    f = Tempfile.new "lfpe-summary-pe"
    g = Tempfile.new "lfpe-summary-ref"
    f.write pe.gsub("@@ ","")+"\n"
    g.write data["references"][j]+"\n"
    f.close
    g.close
    ter_scores << [1.0, (`#{CDEC}/mteval/fast_score -i #{f.path} -r #{g.path} -m ter 2>/dev/null`.to_f).round(2)].min
    f.unlink
    g.unlink
  }

  hter_scores = []
  data["post_edits"].each_with_index { |pe,j|
    f = Tempfile.new "lfpe-summary-mt"
    g = Tempfile.new "lfpe-summary-pe"
    f.write data["mt_raw"][j]+"\n"
    g.write pe.gsub("@@ ", "")+"\n"
    f.close
    g.close
    hter_scores << [1.0, (`#{CDEC}/mteval/fast_score -i #{f.path} -r #{g.path} -m ter 2>/dev/null`.to_f).round(2)].min
    f.unlink
    g.unlink
  }

  haml :summary, :locals => { :session_key => SESSION_KEY,
                              :data => data,
                              :bleu_scores => bleu_scores,
                              :ter_scores => ter_scores,
                              :hter_scores => hter_scores }

end