Class: Joumae::Transaction

Inherits:
Object
  • Object
show all
Defined in:
lib/joumae/transaction.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(resource_name:, client:, renew_interval: 20, ttl: 30) ⇒ Transaction

Returns a new instance of Transaction.



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# File 'lib/joumae/transaction.rb', line 3

def initialize(resource_name:, client:, renew_interval: 20, ttl: 30)
  @resource_name = resource_name
  @client = client
  @renew_interval = renew_interval
  @ttl = ttl
  @finished = false
end

Class Method Details

.run!(resource_name:, client:, &block) ⇒ Object 



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# File 'lib/joumae/transaction.rb', line 47

def self.run!(resource_name:, client:, &block)
  t = new(resource_name: resource_name, client: client)
  t.start
  begin
    block.call
  ensure
    t.finish
  end
end

Instance Method Details

#finish ⇒ Object 



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# File 'lib/joumae/transaction.rb', line 38

def finish
  stop_thread
  @client.release(@resource_name)
end

#finished? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/joumae/transaction.rb', line 43

def finished?
  @finished
end

#start ⇒ Object 



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# File 'lib/joumae/transaction.rb', line 11

def start
  @client.acquire(@resource_name, ttl: @ttl)

  start_thread
end

#start_thread ⇒ Object 



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# File 'lib/joumae/transaction.rb', line 17

def start_thread
  fail "Thread already started" if @thread

  @thread = Thread.start {
    loop do
      wait_started_time = Time.now
      while Time.now - wait_started_time < @renew_interval
        sleep 0.1
        @thread.exit if finished?
      end
      @client.renew(@resource_name, ttl: @ttl)
    end
  }
end

#stop_thread ⇒ Object 



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# File 'lib/joumae/transaction.rb', line 32

def stop_thread
  @finished = true

  @thread.join
end