Class: OFlow::Inspector

Inherits:
OTerm::Executor
  • Object
show all
Defined in:
lib/oflow/inspector.rb

Defined Under Namespace

Classes: TaskStat

Constant Summary collapse

BY_NAME =

sort by values

'name'
BY_ACTIVITY = 
'activity'
BY_QUEUE = 
'queued'
BY_COUNT = 
'count'
BY_STATE = 
'state'

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(port = 6060) ⇒ Inspector

Returns a new instance of Inspector.



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
 
# File 'lib/oflow/inspector.rb', line 9

def initialize(port=6060)
  super()
  @running = true
  
  register('busy', self, :busy, 'returns the busy state of the system.', nil)
  register('list', self, :list, '[-r] [<id>] lists Flows and Tasks.',
           %|Shows a list of Flow and Task full names that fall under the id if one is
provided, otherwise the top leve is assumed. If the -r option is specified then
the names of all the Flows and Tasks under the named item are displayed.|)
  register('show', self, :show, '[-v] <id> displays a description of a Flow or Task.',
           %|Shows a description of the identified Flow or Task. If the -v option is
specified then a detailed description of the Tasks is displayed which included
the number of requests queued and the status of the Task. More -v arguments
will give increasing more detail.|)
  register('start', self, :start, '[<task id>] start or restart a Task.', nil)
  register('step', self, :step, '[<task id>] step once.',
           %|Step once for the Task specfified or once for some Task that is
waiting if no Task is identified.|)
  register('stop', self, :stop, '[<task id>] stops a Task.', nil)
  register('verbosity', self, :verbosity, '[<level>] show or set the verbosity or log level.', nil)
  register('watch', self, :watch, '[<task id> displays status of Tasks.',
           %|Displays the Task name, activity indicator, queued count, and number of
requests processed. If the terminal supports real time updates the displays
stays active until the X character is pressed. While running options are
available for sorting on name, activity, or queue size.|)

  # register('debug', self, :debug, 'toggles debug mode.', nil)

  @server = ::OTerm::Server.new(self, port, false)
end

Instance Attribute Details

#running ⇒ Object (readonly)

Returns the value of attribute running.



7
8
9
 
# File 'lib/oflow/inspector.rb', line 7

def running
  @running
end

Instance Method Details

#_dynamic_watch(listener, tasks) ⇒ Object 



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
 
# File 'lib/oflow/inspector.rb', line 226

def _dynamic_watch(listener, tasks)
  o = listener.out
  sort_by = BY_NAME
  rev = false
  delay = 0.4
  tasks.map! { |t| TaskStat.new(t) }
  lines = tasks.size + 3
  h, w = o.screen_size()
  lines = h - 1 if lines > h - 1
  o.clear_screen()
  done = false
  until done
    tasks.each { |ts| ts.refresh() }
    max = 6
    max_n = 1
    tasks.each do |ts|
      max = ts.name.size if max < ts.name.size
      max_n = ts.count.size if max_n < ts.count.size
    end
    # 5 for space between after, 3 for state, max_n for number
    max_q = w - max - 8 - max_n

    case sort_by
    when BY_NAME
      if rev
        tasks.sort! { |a,b| b.name <=> a.name }
      else
        tasks.sort! { |a,b| a.name <=> b.name }
      end
    when BY_ACTIVITY
      if rev
        tasks.sort! { |a,b| a.activity <=> b.activity }
      else
        tasks.sort! { |a,b| b.activity <=> a.activity }
      end
    when BY_QUEUE
      if rev
        tasks.sort! { |a,b| a.queued <=> b.queued }
      else
        tasks.sort! { |a,b| b.queued <=> a.queued }
      end
    when BY_COUNT
      if rev
        tasks.sort! { |a,b| a.proc_cnt <=> b.proc_cnt }
      else
        tasks.sort! { |a,b| b.proc_cnt <=> a.proc_cnt }
      end
    when BY_STATE
      if rev
        tasks.sort! { |a,b| a.state <=> b.state }
      else
        tasks.sort! { |a,b| b.state <=> a.state }
      end
    end
    o.set_cursor(1, 1)
    o.bold()
    o.underline()
    o.p("%1$*2$s ? %3$*4$s @ Queued %5$*6$s" % ['#', -max_n, 'Task', -max, ' ', max_q])
    o.attrs_off()
    i = 2
    tasks[0..lines].each do |ts|
      o.set_cursor(i, 1)
      o.p("%1$*2$s %5$c %3$*4$s " % [ts.count, max_n, ts.name, -max, ts.state])
      o.set_cursor(i, max + max_n + 5)
      case ts.activity
      when 0
        o.p(' ')
      when 1
        o.p('.')
      when 2, 3
        o.p('o')
      else
        o.p('O')
      end
      o.p(' ')
      qlen = ts.queued
      qlen = max_q if max_q < qlen
      if 0 < qlen
        o.reverse()
        o.p("%1$*2$d" % [ts.queued, -qlen])
        o.attrs_off()
      end
      o.clear_to_end()
      i += 1
    end
    o.bold()
    o.set_cursor(i, 1)
    if rev
      o.p("E) exit  R) ")
      o.reverse()
      o.p("reverse")
      o.attrs_off()
      o.bold()
      o.p("  +) faster  -) slower [%0.1f]" % [delay])
    else
      o.p("E) exit  R) reverse  +) faster  -) slower [%0.1f]" % [delay])
    end
    i += 1
    o.set_cursor(i, 1)
    o.p('sort by')
    { '#' => BY_COUNT, '?' => BY_STATE, 'N' => BY_NAME, 'A' => BY_ACTIVITY, 'Q' => BY_QUEUE }.each do |c,by|
      if by == sort_by
        o.p("  #{c}) ")
        o.reverse()
        o.p(by)
        o.attrs_off()
        o.bold()
      else
        o.p("  #{c}) #{by}")
      end
    end
    o.attrs_off()

    c = o.recv_wait(1, delay, /./)
    unless c.nil?
      case c[0]
      when 'e', 'E'
        done = true
      when 'n', 'N'
        sort_by = BY_NAME
        rev = false
      when 'a', 'A'
        sort_by = BY_ACTIVITY
        rev = false
      when 'q', 'Q'
        sort_by = BY_QUEUE
        rev = false
      when '#', 'c', 'C'
        sort_by = BY_COUNT
        rev = false
      when '?', 's', 'S'
        sort_by = BY_STATE
        rev = false
      when 'r', 'R'
        rev = !rev
      when '+'
        delay /= 2.0 unless delay <= 0.1
      when '-'
        delay *= 2.0 unless 3.0 <= delay
      end
    end
  end
  o.pl()
end

#_parse_opt_id_args(args, opt, listener) ⇒ Object 



421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
 
# File 'lib/oflow/inspector.rb', line 421

def _parse_opt_id_args(args, opt, listener)
  opt_cnt = 0
  id = nil
  args.strip!
  args.split(' ').each do |a|
    if '-' == a[0]
      a[1..-1].each_char do |c|
        if c == opt
          opt_cnt += 1
        else
          listener.out.pl("--- -#{c} is not a valid option")
          return [0, nil, false]
        end
      end
    elsif !id.nil?
      listener.out.pl("--- Multiple Ids specified")
      return [0, nil, false]
    else
      id = a
    end
  end
  [opt_cnt, id, true]
end

#_walk(flow, recurse, listener, &block) ⇒ Object 



445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
 
# File 'lib/oflow/inspector.rb', line 445

def _walk(flow, recurse, listener, &block)
  if flow.respond_to?(:each_task)
    if recurse
      block.yield(flow)
      flow.each_task() do |task|
        _walk(task, true, listener, &block)
      end
    else
      flow.each_task() do |task|
        block.yield(task)
      end
    end
  else
    block.yield(flow)
  end
end

#busy(listener, args) ⇒ Object 



58
59
60
61
62
63
64
 
# File 'lib/oflow/inspector.rb', line 58

def busy(listener, args)
  if Env.busy?()
    listener.out.pl("One or more Tasks is busy.")
  else
    listener.out.pl("All Tasks are idle.")
  end
end

#debug(listener, args) ⇒ Object 



54
55
56
 
# File 'lib/oflow/inspector.rb', line 54

def debug(listener, args)
  @server.debug = !@server.debug
end

#flows(listener, args) ⇒ Object 



66
67
68
69
70
 
# File 'lib/oflow/inspector.rb', line 66

def flows(listener, args)
  Env.each_task() do |t|
    listener.out.pl(t.full_name)
  end
end

#greeting ⇒ Object 



50
51
52
 
# File 'lib/oflow/inspector.rb', line 50

def greeting()
  "Welcome to the Operations Flow Inspector."
end

#join ⇒ Object 



40
41
42
 
# File 'lib/oflow/inspector.rb', line 40

def join()
  @server.join()
end

#list(listener, args) ⇒ Object 



72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
 
# File 'lib/oflow/inspector.rb', line 72

def list(listener, args)
  if nil == args
    Env.each_task() do |task|
      listener.out.pl(task.full_name)
    end
    return
  end
  recurse, id, ok = _parse_opt_id_args(args, 'r', listener)
  return unless ok
  if id.nil?
    flow = Env
  else
    flow = Env.locate(id)
  end
  if flow.nil?
    listener.out.pl("--- No Flow or Task found for #{id}")
    return
  end
  _walk(flow, recurse, listener) do |task|
    listener.out.pl(task.full_name) unless Env == task
  end
end

#show(listener, args) ⇒ Object 



95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
 
# File 'lib/oflow/inspector.rb', line 95

def show(listener, args)
  if nil == args
    listener.out.pl("--- No Flow or Task specified")
    return
  end
  detail, id, ok = _parse_opt_id_args(args, 'v', listener)
  return unless ok

  task = Env.locate(id)
  if task.nil?
    listener.out.pl("--- Failed to find '#{id}'")
    return
  end
  listener.out.pl(task.describe(detail))
end

#shutdown(listener, args) ⇒ Object 



44
45
46
47
48
 
# File 'lib/oflow/inspector.rb', line 44

def shutdown(listener, args)
  super
  @running = false
  Env.shutdown()
end

#start(listener, args) ⇒ Object 



111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
 
# File 'lib/oflow/inspector.rb', line 111

def start(listener, args)
  if nil == args || 0 == args.size()
    Env.start()
    listener.out.pl("All Tasks restarted")
  else
    args.strip!
    task = Env.locate(args)
    if task.nil?
      listener.out.pl("--- Failed to find '#{args}'")
    else
      task.start()
      listener.out.pl("#{task.full_name} restarted")
    end
  end
end

#step(listener, args) ⇒ Object 



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
 
# File 'lib/oflow/inspector.rb', line 127

def step(listener, args)
  lg = Env.log()
  stop_after = false
  if !lg.nil? && Task::STOPPED == lg.state
    lg.start()
    stop_after = true
  end

  if nil == args || 0 == args.size()
    task = Env
  else
    args.strip!
    task = Env.locate(args)
  end
  if task.nil?
    listener.out.pl("--- Failed to find '#{args}'")
  else
    task = task.step()
    if task.nil?
      listener.out.pl("--- No tasks in '#{args}' are stopped or have have queued requests")
    else
      listener.out.pl("#{task.full_name} stepped")
    end
  end
  lg.stop() if stop_after
end

#stop(listener, args) ⇒ Object 



154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
 
# File 'lib/oflow/inspector.rb', line 154

def stop(listener, args)
  if nil == args || 0 == args.size()
    Env.stop()
    listener.out.pl("All Tasks stopped(paused)")
  else
    args.strip!
    task = Env.locate(args)
    if task.nil?
      listener.out.pl("--- Failed to find '#{args}'")
    else
      task.stop()
      listener.out.pl("#{task.full_name} stopped(paused)")
    end
  end
end

#tab(cmd, listener) ⇒ Object 



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
 
# File 'lib/oflow/inspector.rb', line 371

def tab(cmd, listener)
  start = cmd.index(' ')
  if start.nil?
    super
    return
  end
  op = cmd[0...start]
  start = cmd.rindex(' ')
  pre = cmd[0...start]
  last = cmd[start + 1..-1]

  return if '-' == last[0]

  # Tab completion is different depending on the command.
  names = []
  case op.downcase()
  when 'verbosity'
    names = ['fatal', 'error', 'warn', 'info', 'debug'].select { |s| s.start_with?(last.downcase()) }
  else # expect id or options
    with_colon = ':' == last[0]
    Env.walk_tasks(false) do |t|
      fn = t.full_name
      fn = fn[1..-1] unless with_colon
      names << fn if fn.start_with?(last)
    end
  end
  
  return if 0 == names.size
  if 1 == names.size
    listener.move_col(1000)
    listener.insert(names[0][last.size..-1])
    listener.out.prompt()
    listener.out.p(listener.buf)
  else
    listener.out.pl()
    names.each do |name|
      listener.out.pl("#{pre} #{name}")
    end
    best = best_completion(last, names)
    if best == last
      listener.update_cmd(0)
    else
      listener.move_col(1000)
      listener.insert(best[last.size..-1])
      listener.out.prompt()
      listener.out.p(listener.buf)
    end
  end
end

#verbosity(listener, args) ⇒ Object 



170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
 
# File 'lib/oflow/inspector.rb', line 170

def verbosity(listener, args)
  lg = Env.log
  if lg.nil?
    listener.out.pl("--- No logger")
    return
  end
  lga = lg.actor
  if nil != args && 0 < args.size()
    args.strip!
    lg.receive(:severity, Box.new(args))
    listener.out.pl("verbosity change pending")
  elsif lga.respond_to?(:severity)
    listener.out.pl("verbosity: #{lga.severity()}")
  else
    listener.out.pl("--- Logger does support requests for verbosity level")
  end
end

#watch(listener, args) ⇒ Object 



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
 
# File 'lib/oflow/inspector.rb', line 188

def watch(listener, args)
  tasks = []
  if args.nil? || 0 == args.size()
    Env.walk_tasks() { |t| tasks << t }
  else
    args.strip!
    task = Env.locate(args)
    if task.nil?
      listener.out.pl("--- Failed to find '#{args}'")
      return
    elsif task.kind_of?(HasTasks)
      task.walk_tasks() { |t| tasks << t }
    else
      tasks << task
    end
  end
  if listener.out.is_vt100?
    _dynamic_watch(listener, tasks)
  else
    max_len = 10
    tasks.each do |t|
      len = t.full_name.size
      max_len = len if max_len < len
    end
    listener.out.pl("  %#{max_len}s  %-11s  %5s  %9s" % ['Task Name', 'Q-cnt/max', 'busy?', 'processed'])
    tasks.each do |t|
      listener.out.pl("  %#{max_len}s  %5d/%-5d  %5s  %9d" % [t.full_name, t.queue_count(), t.max_queue_count().to_i, t.busy?(), t.proc_count()])
    end
  end
end