Module: ResqueAdmin::Scheduler

Extended by:
Configuration, Locking, SignalHandling
Defined in:
lib/resque/scheduler/cli.rb,
lib/resque/scheduler/env.rb,
lib/resque/scheduler/util.rb,
lib/resque_admin/scheduler.rb,
lib/resque/scheduler/server.rb,
lib/resque/scheduler/locking.rb,
lib/resque/scheduler_admin/cli.rb,
lib/resque/scheduler_admin/env.rb,
lib/resque_admin/scheduler/cli.rb,
lib/resque_admin/scheduler/env.rb,
lib/resque/scheduler_admin/util.rb,
lib/resque_admin/scheduler/util.rb,
lib/resque_admin/scheduler/plugin.rb,
lib/resque_admin/scheduler/server.rb,
lib/resque/scheduler_admin/locking.rb,
lib/resque_admin/scheduler/locking.rb,
lib/resque_admin/scheduler/version.rb,
lib/resque/scheduler/logger_builder.rb,
lib/resque/scheduler/signal_handling.rb,
lib/resque_admin/scheduler/extension.rb,
lib/resque_admin/scheduler/lock/base.rb,
lib/resque_admin/scheduler/lock/basic.rb,
lib/resque/scheduler/delaying_extensions.rb,
lib/resque_admin/scheduler/configuration.rb,
lib/resque/scheduler_admin/logger_builder.rb,
lib/resque_admin/scheduler/lock/resilient.rb,
lib/resque_admin/scheduler/logger_builder.rb,
lib/resque/scheduler/scheduling_extensions.rb,
lib/resque/scheduler_admin/signal_handling.rb,
lib/resque_admin/scheduler/failure_handler.rb,
lib/resque_admin/scheduler/signal_handling.rb,
lib/resque/scheduler_admin/delaying_extensions.rb,
lib/resque_admin/scheduler/delaying_extensions.rb,
lib/resque/scheduler_admin/scheduling_extensions.rb,
lib/resque_admin/scheduler/scheduling_extensions.rb

Defined Under Namespace

Modules: Configuration, DelayingExtensions, Extension, Lock, Locking, Plugin, SchedulingExtensions, Server, SignalHandling Classes: Cli, Env, FailureHandler, LoggerBuilder, Util

Constant Summary collapse

CLI_OPTIONS_ENV_MAPPING = 
{
  app_name: 'APP_NAME',
  background: 'BACKGROUND',
  dynamic: 'DYNAMIC_SCHEDULE',
  env: 'RAILS_ENV',
  initializer_path: 'INITIALIZER_PATH',
  logfile: 'LOGFILE',
  logformat: 'LOGFORMAT',
  quiet: 'QUIET',
  pidfile: 'PIDFILE',
  poll_sleep_amount: 'RESQUE_SCHEDULER_INTERVAL',
  verbose: 'VERBOSE'
}.freeze
VERSION = 
'4.3.0'.freeze

Class Attribute Summary collapse

Attributes included from Configuration

#app_name, #dynamic, #env, #logfile, #logformat, #poll_sleep_amount, #quiet, #verbose

Attributes included from SignalHandling

#signal_queue

Class Method Summary collapse

Methods included from Locking

master?, master_lock, release_master_lock, release_master_lock!, supports_lua?

Methods included from Configuration

configure

Methods included from SignalHandling

handle_signals, register_signal_handlers

Class Attribute Details

.failure_handler ⇒ Object 



407
408
409
 
# File 'lib/resque_admin/scheduler.rb', line 407

def failure_handler
  @failure_handler ||= ResqueAdmin::Scheduler::FailureHandler
end

.logger ⇒ Object 



411
412
413
414
415
416
417
418
 
# File 'lib/resque_admin/scheduler.rb', line 411

def logger
  @logger ||= ResqueAdmin::Scheduler::LoggerBuilder.new(
    quiet: quiet,
    verbose: verbose,
    log_dev: logfile,
    format: logformat
  ).build
end

.scheduled_jobs ⇒ Object (readonly)

the Rufus::Scheduler jobs that are scheduled



29
30
31
 
# File 'lib/resque_admin/scheduler.rb', line 29

def scheduled_jobs
  @scheduled_jobs
end

Class Method Details

.before_shutdown ⇒ Object 



375
376
377
378
 
# File 'lib/resque_admin/scheduler.rb', line 375

def before_shutdown
  stop_rufus_scheduler
  release_master_lock
end

.clear_schedule! ⇒ Object

Stops old rufus scheduler and creates a new one. Returns the new rufus scheduler



288
289
290
291
292
293
 
# File 'lib/resque_admin/scheduler.rb', line 288

def clear_schedule!
  rufus_scheduler.stop
  @rufus_scheduler = nil
  @scheduled_jobs = {}
  rufus_scheduler
end

.enqueue(config) ⇒ Object 



213
214
215
216
217
 
# File 'lib/resque_admin/scheduler.rb', line 213

def enqueue(config)
  enqueue_from_config(config)
rescue => e
  ResqueAdmin::Scheduler.failure_handler.on_enqueue_failure(config, e)
end

.enqueue_delayed_items_for_timestamp(timestamp) ⇒ Object

Enqueues all delayed jobs for a timestamp



200
201
202
203
204
205
206
207
208
209
210
211
 
# File 'lib/resque_admin/scheduler.rb', line 200

def enqueue_delayed_items_for_timestamp(timestamp)
  item = nil
  loop do
    handle_shutdown do
      # Continually check that it is still the master
      item = enqueue_next_item(timestamp) if master?
    end
    # continue processing until there are no more ready items in this
    # timestamp
    break if item.nil?
  end
end

.enqueue_from_config(job_config) ⇒ Object

Enqueues a job based on a config hash



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
 
# File 'lib/resque_admin/scheduler.rb', line 226

def enqueue_from_config(job_config)
  args = job_config['args'] || job_config[:args]

  klass_name = job_config['class'] || job_config[:class]
  begin
    klass = ResqueAdmin::Scheduler::Util.constantize(klass_name)
  rescue NameError
    klass = klass_name
  end

  params = args.is_a?(Hash) ? [args] : Array(args)
  queue = job_config['queue'] ||
          job_config[:queue] ||
          ResqueAdmin.queue_from_class(klass)
  # Support custom job classes like those that inherit from
  # ResqueAdmin::JobWithStatus (resque_admin-status)
  job_klass = job_config['custom_job_class']
  if job_klass && job_klass != 'ResqueAdmin::Job'
    # The custom job class API must offer a static "scheduled" method. If
    # the custom job class can not be constantized (via a requeue call
    # from the web perhaps), fall back to enqueing normally via
    # ResqueAdmin::Job.create.
    begin
      ResqueAdmin::Scheduler::Util.constantize(job_klass).scheduled(
        queue, klass_name, *params
      )
    rescue NameError
      # Note that the custom job class (job_config['custom_job_class'])
      # is the one enqueued
      ResqueAdmin::Job.create(queue, job_klass, *params)
    end
  else
    # Hack to avoid havoc for people shoving stuff into queues
    # for non-existent classes (for example: running scheduler in
    # one app that schedules for another.
    if Class === klass
      ResqueAdmin::Scheduler::Plugin.run_before_delayed_enqueue_hooks(
        klass, *params
      )

      # If the class is a custom job class, call self#scheduled on it.
      # This allows you to do things like ResqueAdmin.enqueue_at(timestamp,
      # CustomJobClass). Otherwise, pass off to ResqueAdmin.
      if klass.respond_to?(:scheduled)
        klass.scheduled(queue, klass_name, *params)
      else
        ResqueAdmin.enqueue_to(queue, klass, *params)
      end
    else
      # This will not run the before_hooks in rescue, but will at least
      # queue the job.
      ResqueAdmin::Job.create(queue, klass, *params)
    end
  end
end

.enqueue_next_item(timestamp) ⇒ Object 



188
189
190
191
192
193
194
195
196
197
 
# File 'lib/resque_admin/scheduler.rb', line 188

def enqueue_next_item(timestamp)
  item = ResqueAdmin.next_item_for_timestamp(timestamp)

  if item
    log "queuing #{item['class']} [delayed]"
    enqueue(item)
  end

  item
end

.env_matches?(configured_env) ⇒ Boolean

Returns true if the current env is non-nil and the configured env (which is a comma-split string) includes the current env.

Returns:

  • (Boolean) 


171
172
173
 
# File 'lib/resque_admin/scheduler.rb', line 171

def env_matches?(configured_env)
  env && configured_env.split(/[\s,]+/).include?(env)
end

.handle_delayed_items(at_time = nil) ⇒ Object

Handles queueing delayed items at_time - Time to start scheduling items (default: now).



177
178
179
180
181
182
183
184
185
186
 
# File 'lib/resque_admin/scheduler.rb', line 177

def handle_delayed_items(at_time = nil)
  timestamp = ResqueAdmin.next_delayed_timestamp(at_time)
  if timestamp
    procline 'Processing Delayed Items'
    until timestamp.nil?
      enqueue_delayed_items_for_timestamp(timestamp)
      timestamp = ResqueAdmin.next_delayed_timestamp(at_time)
    end
  end
end

.handle_shutdown ⇒ Object 



219
220
221
222
223
 
# File 'lib/resque_admin/scheduler.rb', line 219

def handle_shutdown
  exit if @shutdown
  yield
  exit if @shutdown
end

.handle_signals_with_operation ⇒ Object 



361
362
363
364
365
366
367
368
 
# File 'lib/resque_admin/scheduler.rb', line 361

def handle_signals_with_operation
  yield if block_given?
  handle_signals
  false
rescue Interrupt
  before_shutdown if @shutdown
  true
end

.load_schedule! ⇒ Object

Pulls the schedule from ResqueAdmin.schedule and loads it into the rufus scheduler instance



89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
 
# File 'lib/resque_admin/scheduler.rb', line 89

def load_schedule!
  procline 'Loading Schedule'

  # Need to load the schedule from redis for the first time if dynamic
  ResqueAdmin.reload_schedule! if dynamic

  log! 'Schedule empty! Set ResqueAdmin.schedule' if ResqueAdmin.schedule.empty?

  @scheduled_jobs = {}

  ResqueAdmin.schedule.each do |name, config|
    load_schedule_job(name, config)
  end
  ResqueAdmin.redis.del(:schedules_changed)
  procline 'Schedules Loaded'
end

.load_schedule_job(name, config) ⇒ Object

Loads a job schedule into the Rufus::Scheduler and stores it in @scheduled_jobs



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
 
# File 'lib/resque_admin/scheduler.rb', line 126

def load_schedule_job(name, config)
  # If `rails_env` or `env` is set in the config, load jobs only if they
  # are meant to be loaded in `ResqueAdmin::Scheduler.env`.  If `rails_env` or
  # `env` is missing, the job should be scheduled regardless of the value
  # of `ResqueAdmin::Scheduler.env`.

  configured_env = config['rails_env'] || config['env']

  if configured_env.nil? || env_matches?(configured_env)
    log! "Scheduling #{name} "
    interval_defined = false
    interval_types = %w(cron every)
    interval_types.each do |interval_type|
      next unless !config[interval_type].nil? && !config[interval_type].empty?
      args = optionizate_interval_value(config[interval_type])
      args = [args, nil, job: true] if args.is_a?(::String)

      job = rufus_scheduler.send(interval_type, *args) do
        enqueue_recurring(name, config)
      end
      @scheduled_jobs[name] = job
      interval_defined = true
      break
    end
    unless interval_defined
      log! "no #{interval_types.join(' / ')} found for " \
           "#{config['class']} (#{name}) - skipping"
    end
  else
    log "Skipping schedule of #{name} because configured " \
        "env #{configured_env.inspect} does not match current " \
        "env #{env.inspect}"
  end
end

.log(msg) ⇒ Object 



396
397
398
 
# File 'lib/resque_admin/scheduler.rb', line 396

def log(msg)
  logger.debug { msg }
end

.log!(msg) ⇒ Object 



388
389
390
 
# File 'lib/resque_admin/scheduler.rb', line 388

def log!(msg)
  logger.info { msg }
end

.log_error(msg) ⇒ Object 



392
393
394
 
# File 'lib/resque_admin/scheduler.rb', line 392

def log_error(msg)
  logger.error { msg }
end

.optionizate_interval_value(value) ⇒ Object

modify interval type value to value with options if options available



107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
 
# File 'lib/resque_admin/scheduler.rb', line 107

def optionizate_interval_value(value)
  args = value
  if args.is_a?(::Array)
    return args.first if args.size > 2 || !args.last.is_a?(::Hash)
    # symbolize keys of hash for options
    args[2] = args[1].reduce({}) do |m, i|
      key, value = i
      m[(key.respond_to?(:to_sym) ? key.to_sym : key) || key] = value
      m
    end

    args[2][:job] = true
    args[1] = nil
  end
  args
end

.poll_sleep ⇒ Object

Sleeps and returns true



328
329
330
331
332
333
334
335
336
337
 
# File 'lib/resque_admin/scheduler.rb', line 328

def poll_sleep
  handle_shutdown do
    begin
      poll_sleep_loop
    ensure
      @sleeping = false
    end
  end
  true
end

.poll_sleep_loop ⇒ Object 



339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
 
# File 'lib/resque_admin/scheduler.rb', line 339

def poll_sleep_loop
  @sleeping = true
  if poll_sleep_amount > 0
    start = Time.now
    loop do
      elapsed_sleep = (Time.now - start)
      remaining_sleep = poll_sleep_amount - elapsed_sleep
      @do_break = false
      if remaining_sleep <= 0
        @do_break = true
      else
        @do_break = handle_signals_with_operation do
          sleep(remaining_sleep)
        end
      end
      break if @do_break
    end
  else
    handle_signals_with_operation
  end
end

.print_schedule ⇒ Object 



77
78
79
80
81
82
83
84
85
 
# File 'lib/resque_admin/scheduler.rb', line 77

def print_schedule
  if rufus_scheduler
    log! "Scheduling Info\tLast Run"
    scheduler_jobs = rufus_scheduler.jobs
    scheduler_jobs.each do |_k, v|
      log! "#{v.t}\t#{v.last}\t"
    end
  end
end

.procline(string) ⇒ Object 



400
401
402
403
404
405
 
# File 'lib/resque_admin/scheduler.rb', line 400

def procline(string)
  log! string
  argv0 = build_procline(string)
  log "Setting procline #{argv0.inspect}"
  $0 = argv0
end

.rails_env_matches?(config) ⇒ Boolean

Returns true if the given schedule config hash matches the current env

Returns:

  • (Boolean) 


162
163
164
165
166
167
 
# File 'lib/resque_admin/scheduler.rb', line 162

def rails_env_matches?(config)
  warn '`ResqueAdmin::Scheduler.rails_env_matches?` is deprecated. ' \
       'Please use `ResqueAdmin::Scheduler.env_matches?` instead.'
  config['rails_env'] && env &&
    config['rails_env'].split(/[\s,]+/).include?(env)
end

.reload_schedule! ⇒ Object 



295
296
297
298
299
 
# File 'lib/resque_admin/scheduler.rb', line 295

def reload_schedule!
  procline 'Reloading Schedule'
  clear_schedule!
  load_schedule!
end

.rufus_scheduler ⇒ Object 



282
283
284
 
# File 'lib/resque_admin/scheduler.rb', line 282

def rufus_scheduler
  @rufus_scheduler ||= Rufus::Scheduler.new
end

.run ⇒ Object

Schedule all jobs and continually look for delayed jobs (never returns)



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
 
# File 'lib/resque_admin/scheduler.rb', line 35

def run
  procline 'Starting'

  # trap signals
  register_signal_handlers

  # Quote from the resque_admin/worker.
  # Fix buffering so we can `rake resque_admin:scheduler > scheduler.log` and
  # get output from the child in there.
  $stdout.sync = true
  $stderr.sync = true

  # Load the schedule into rufus
  # If dynamic is set, load that schedule otherwise use normal load
  if dynamic
    reload_schedule!
  else
    load_schedule!
  end

  begin
    @th = Thread.current

    # Now start the scheduling part of the loop.
    loop do
      begin
        if master?
          handle_delayed_items
          update_schedule if dynamic
        end
      rescue Errno::EAGAIN, Errno::ECONNRESET, Redis::CannotConnectError => e
        log! e.message
        release_master_lock
      end
      poll_sleep
    end

  rescue Interrupt
    log 'Exiting'
  end
end

.shutdown ⇒ Object

Sets the shutdown flag, clean schedules and exits if sleeping



381
382
383
384
385
386
 
# File 'lib/resque_admin/scheduler.rb', line 381

def shutdown
  return if @shutdown
  @shutdown = true
  log!('Shutting down')
  @th.raise Interrupt if @sleeping
end

.stop_rufus_scheduler ⇒ Object 



370
371
372
373
 
# File 'lib/resque_admin/scheduler.rb', line 370

def stop_rufus_scheduler
  rufus_scheduler.shutdown(:wait)
  rufus_scheduler.join
end

.unschedule_job(name) ⇒ Object 



319
320
321
322
323
324
325
 
# File 'lib/resque_admin/scheduler.rb', line 319

def unschedule_job(name)
  if scheduled_jobs[name]
    log "Removing schedule #{name}"
    scheduled_jobs[name].unschedule
    @scheduled_jobs.delete(name)
  end
end

.update_schedule ⇒ Object 



301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
 
# File 'lib/resque_admin/scheduler.rb', line 301

def update_schedule
  if ResqueAdmin.redis.scard(:schedules_changed) > 0
    procline 'Updating schedule'
    loop do
      schedule_name = ResqueAdmin.redis.spop(:schedules_changed)
      break unless schedule_name
      ResqueAdmin.reload_schedule!
      if ResqueAdmin.schedule.keys.include?(schedule_name)
        unschedule_job(schedule_name)
        load_schedule_job(schedule_name, ResqueAdmin.schedule[schedule_name])
      else
        unschedule_job(schedule_name)
      end
    end
    procline 'Schedules Loaded'
  end
end