Class: Sqeduler::LockMaintainer

Inherits:
Object
  • Object
show all
Defined in:
lib/sqeduler/lock_maintainer.rb

Overview

This is to ensure that if you set your jobs to run one a time and something goes wrong causing a job to run for a long time, your lock won't expire. This doesn't stop long running jobs, it just ensures you only end up with one long running job rather than 20 of them.

Constant Summary collapse

RUN_INTERVAL = 
30
RUN_JITTER = 
1..5

Instance Method Summary collapse

Constructor Details

#initialize ⇒ LockMaintainer

Returns a new instance of LockMaintainer.



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# File 'lib/sqeduler/lock_maintainer.rb', line 11

def initialize
  @class_with_locks = {}
end

Instance Method Details

#run ⇒ Object

This is only done when we initialize Sqeduler, don't need to worry about threading



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# File 'lib/sqeduler/lock_maintainer.rb', line 16

def run
  @maintainer_thread ||= Thread.new do
    loop do
      begin
        if redis_lock.lock
          begin
            synchronize
          ensure
            redis_lock.unlock
          end
        end

      rescue => ex
        Service.logger.error "[#{self.class}] #{ex.class}, #{ex.message}"
      end

      sleep RUN_INTERVAL + rand(RUN_JITTER)
    end
  end
end