Module: Interchange::Methods

Defined in:
lib/interchange.rb

Instance Method Summary collapse

Instance Method Details

#check ⇒ Object 



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# File 'lib/interchange.rb', line 66

def check
  fail NotAvailableError, implementation unless up?
  true
end

#down? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/interchange.rb', line 62

def down?
  !up?
end

#implementation ⇒ Object 



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# File 'lib/interchange.rb', line 75

def implementation
  @implementation
end

#implementations ⇒ Object 



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# File 'lib/interchange.rb', line 71

def implementations
  @implementations ||= { }
end

#register(name, implementation) ⇒ Object 



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# File 'lib/interchange.rb', line 43

def register(name, implementation)
  implementations[name] = implementation
end

#use(name) ⇒ Object 



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# File 'lib/interchange.rb', line 47

def use(name)
  @implementation = implementations.fetch name do
    raise UnregisteredError, name
  end
end

#with(name) ⇒ Object 



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# File 'lib/interchange.rb', line 53

def with(name)
  original = implementation
  use name
  result = yield self
  @implementation = original

  result
end