Class: Temporal::Middleware::Chain

Inherits:
Object
  • Object
show all
Defined in:
lib/temporal/middleware/chain.rb

Instance Method Summary collapse

Constructor Details

#initialize(entries = []) ⇒ Chain

Returns a new instance of Chain.



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# File 'lib/temporal/middleware/chain.rb', line 4

def initialize(entries = [])
  @middleware = entries.map(&:init_middleware)
end

Instance Method Details

#invoke(metadata) ⇒ Object 



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# File 'lib/temporal/middleware/chain.rb', line 8

def invoke(metadata)
  result = nil
  chain = middleware.dup

  traverse_chain = lambda do
    if chain.empty?
      result = yield
    else
      chain.shift.call(metadata, &traverse_chain)
    end
  end

  traverse_chain.call

  result
end