Class: MiniScheduler::ScheduleInfo

Inherits:
Object
  • Object
show all
Defined in:
lib/mini_scheduler/schedule_info.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(klass, manager) ⇒ ScheduleInfo

Returns a new instance of ScheduleInfo.



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# File 'lib/mini_scheduler/schedule_info.rb', line 7

def initialize(klass, manager)
  @klass = klass
  @manager = manager

  data = nil

  if data = @manager.redis.get(key)
    data = JSON.parse(data)
  end

  if data
    @next_run = data["next_run"]
    @prev_run = data["prev_run"]
    @prev_result = data["prev_result"]
    @prev_duration = data["prev_duration"]
    @current_owner = data["current_owner"]
  end
rescue StandardError
  # corrupt redis
  @next_run = @prev_run = @prev_result = @prev_duration = @current_owner = nil
end

Instance Attribute Details

#current_owner ⇒ Object

Returns the value of attribute current_owner.



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# File 'lib/mini_scheduler/schedule_info.rb', line 5

def current_owner
  @current_owner
end

#next_run ⇒ Object

Returns the value of attribute next_run.



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# File 'lib/mini_scheduler/schedule_info.rb', line 5

def next_run
  @next_run
end

#prev_duration ⇒ Object

Returns the value of attribute prev_duration.



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# File 'lib/mini_scheduler/schedule_info.rb', line 5

def prev_duration
  @prev_duration
end

#prev_result ⇒ Object

Returns the value of attribute prev_result.



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# File 'lib/mini_scheduler/schedule_info.rb', line 5

def prev_result
  @prev_result
end

#prev_run ⇒ Object

Returns the value of attribute prev_run.



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# File 'lib/mini_scheduler/schedule_info.rb', line 5

def prev_run
  @prev_run
end

Instance Method Details

#del! ⇒ Object 



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# File 'lib/mini_scheduler/schedule_info.rb', line 102

def del!
  clear!
  @next_run = @prev_run = @prev_result = @prev_duration = @current_owner = nil
end

#key ⇒ Object 



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# File 'lib/mini_scheduler/schedule_info.rb', line 107

def key
  if @klass.is_per_host
    Manager.schedule_key(@klass, @manager.hostname)
  else
    Manager.schedule_key(@klass)
  end
end

#queue_key ⇒ Object 



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# File 'lib/mini_scheduler/schedule_info.rb', line 115

def queue_key
  if @klass.is_per_host
    Manager.queue_key(@manager.queue, @manager.hostname)
  else
    Manager.queue_key(@manager.queue)
  end
end

#redis ⇒ Object 



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# File 'lib/mini_scheduler/schedule_info.rb', line 123

def redis
  @manager.redis
end

#schedule! ⇒ Object 



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# File 'lib/mini_scheduler/schedule_info.rb', line 78

def schedule!
  if @klass.every
    schedule_every!
  elsif @klass.daily
    schedule_daily!
  end

  write!
end

#schedule_daily! ⇒ Object 



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# File 'lib/mini_scheduler/schedule_info.rb', line 62

def schedule_daily!
  return if valid?

  at = @klass.daily[:at] || 0
  today_begin = Time.now.midnight.to_i
  today_offset = DateTime.now.seconds_since_midnight

  # If it's later today
  if at > today_offset
    @next_run = today_begin + at
  else
    # Otherwise do it tomorrow
    @next_run = today_begin + 1.day + at
  end
end

#schedule_every! ⇒ Object 



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# File 'lib/mini_scheduler/schedule_info.rb', line 49

def schedule_every!
  if !valid? && @prev_run
    mixup = @klass.every * @manager.random_ratio
    mixup = (mixup * Random.rand - mixup / 2).to_i
    @next_run = @prev_run + mixup + @klass.every
  end

  # this can look a bit confusing, but @next_run above could be off
  # if prev_run is off, so this ensures it ends up correct and in the
  # future
  @next_run = Time.now.to_i + 300 * Random.rand if !valid?
end

#valid? ⇒ Boolean

this means the schedule is going to fire, it is setup correctly. invalid schedules are fixed by running “schedule!” this happens automatically after if fire by the manager.

Returns:

  • (Boolean) 


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# File 'lib/mini_scheduler/schedule_info.rb', line 32

def valid?
  return false unless @next_run
  (!@prev_run && @next_run < Time.now.to_i + 300) || valid_every? || valid_daily?
end

#valid_daily? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mini_scheduler/schedule_info.rb', line 43

def valid_daily?
  return false unless @klass.daily
  return true if !@prev_run && @next_run && @next_run <= (Time.now + 1.day).to_i
  !!@prev_run && @prev_run <= Time.now.to_i && @next_run < @prev_run + 1.day
end

#valid_every? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mini_scheduler/schedule_info.rb', line 37

def valid_every?
  return false unless @klass.every
  !!@prev_run && @prev_run <= Time.now.to_i &&
    @next_run < @prev_run + @klass.every * (1 + @manager.random_ratio)
end

#write! ⇒ Object 



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# File 'lib/mini_scheduler/schedule_info.rb', line 88

def write!
  clear!
  redis.set key,
            {
              next_run: @next_run,
              prev_run: @prev_run,
              prev_duration: @prev_duration,
              prev_result: @prev_result,
              current_owner: @current_owner,
            }.to_json

  redis.zadd queue_key, @next_run.to_s, @klass.to_s if @next_run
end