Class: Sidekiq::Scheduled::Poller
- Inherits:
-
Object
- Object
- Sidekiq::Scheduled::Poller
- Includes:
- Celluloid, Util
- Defined in:
- lib/sidekiq/scheduled.rb
Overview
The Poller checks Redis every N seconds for messages in the retry or scheduled set have passed their timestamp and should be enqueued. If so, it just pops the message back onto its original queue so the workers can pick it up like any other message.
Constant Summary collapse
- SETS =
%w(retry schedule)
Constants included from Util
Instance Method Summary collapse
Methods included from Util
#hostname, #logger, #process_id, #redis, #watchdog
Methods included from ExceptionHandler
Instance Method Details
#poll(first_time = false) ⇒ Object
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# File 'lib/sidekiq/scheduled.rb', line 21 def poll(first_time=false) watchdog('scheduling poller thread died!') do add_jitter if first_time begin # A message's "score" in Redis is the time at which it should be processed. # Just check Redis for the set of messages with a timestamp before now. now = Time.now.to_f.to_s Sidekiq.redis do |conn| SETS.each do |sorted_set| (, _) = conn.multi do conn.zrangebyscore(sorted_set, '-inf', now) conn.zremrangebyscore(sorted_set, '-inf', now) end .each do || logger.debug { "enqueued #{sorted_set}: #{}" } msg = Sidekiq.load_json() conn.multi do conn.sadd('queues', msg['queue']) conn.rpush("queue:#{msg['queue']}", ) end end end end rescue SystemCallError, Redis::TimeoutError, Redis::ConnectionError => ex # ECONNREFUSED, etc. Most likely a problem with # redis networking. Punt and try again at the next interval logger.warn ex. end after(poll_interval) { poll } end end |