Class: Chewy::Strategy

Inherits:
Object show all
Defined in:
lib/chewy/strategy.rb,
lib/chewy/strategy/base.rb,
lib/chewy/strategy/atomic.rb,
lib/chewy/strategy/bypass.rb,
lib/chewy/strategy/resque.rb,
lib/chewy/strategy/urgent.rb,
lib/chewy/strategy/sidekiq.rb

Overview

This class represents strategies stack with ‘:base` Strategy on top of it. This causes raising exceptions on every index update attempt, so other strategy must be choosen.

User.first.save # Raises UndefinedUpdateStrategy exception

Chewy.strategy(:atomic) do
  User.last.save # Save user according to the `:atomic` strategy rules
end

Defined Under Namespace

Classes: Atomic, Base, Bypass, Resque, Sidekiq, Urgent

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Strategy

Returns a new instance of Strategy.



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# File 'lib/chewy/strategy.rb', line 31

def initialize
  @stack = [resolve(Chewy.root_strategy).new]
end

Instance Method Details

#current ⇒ Object 



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# File 'lib/chewy/strategy.rb', line 35

def current
  @stack.last
end

#pop ⇒ Object 



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# File 'lib/chewy/strategy.rb', line 45

def pop
  raise "Can't pop root strategy" if @stack.one?
  debug "[#{@stack.size}] -> #{current.name}"
  result = @stack.pop.tap(&:leave)
  result
end

#push(name) ⇒ Object 



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# File 'lib/chewy/strategy.rb', line 39

def push name
  result = @stack.push resolve(name).new
  debug "[#{@stack.size}] <- #{current.name}"
  result
end

#wrap(name) ⇒ Object 



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# File 'lib/chewy/strategy.rb', line 52

def wrap name
  push name
  yield
ensure
  pop
end