Class: Sidekiq::PowerFetch::Lock

Inherits:
Object
  • Object
show all
Defined in:
lib/sidekiq/power_fetch/lock.rb

Constant Summary collapse

DEFAULT_INTERVAL =

2 minutes

120
DEFAULT_RECOVER =

1 hour

3600
KEY = 
"sidekiq-power-fetch-lock"

Instance Method Summary collapse

Constructor Details

#initialize(capsule) ⇒ Lock

Returns a new instance of Lock.



10
11
12
13
14
15
16
17
18
 
# File 'lib/sidekiq/power_fetch/lock.rb', line 10

def initialize(capsule)
  @capsule = capsule
  @taken_at = 0

  # Sidekiq processes should attempt recovery every 2 minutes.
  @interval = @capsule.config[:power_fetch_lock] || DEFAULT_INTERVAL
  # Perform recovery at most every 1 hour.
  @recover = @capsule.config[:power_fetch_recover] || DEFAULT_RECOVER
end

Instance Method Details

#lock ⇒ Object 



20
21
22
23
24
25
26
27
28
 
# File 'lib/sidekiq/power_fetch/lock.rb', line 20

def lock
  return unless take?

  @taken_at = time
  # Return value is "OK" or nil.
  @capsule.redis do |conn|
    conn.set(KEY, 1, nx: true, ex: @recover)
  end
end