Class: Harmoniser::ErrorHandler

Inherits:
Object
  • Object
show all
Defined in:
lib/harmoniser/error_handler.rb

Constant Summary collapse

TIMEOUT = 
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DEFAULT_ERROR_HANDLER = 
->(exception, ctx) do
  Harmoniser.logger.error("Error handler called: exception = `#{exception.detailed_message}`, context = `#{ctx}`")
end

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(handlers = []) ⇒ ErrorHandler

Returns a new instance of ErrorHandler.



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# File 'lib/harmoniser/error_handler.rb', line 14

def initialize(handlers = [])
  @handlers = handlers
end

Class Method Details

.default ⇒ Object 



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# File 'lib/harmoniser/error_handler.rb', line 9

def default
  @default ||= new([DEFAULT_ERROR_HANDLER])
end

Instance Method Details

#handle_error(exception, ctx = {}) ⇒ Object 



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# File 'lib/harmoniser/error_handler.rb', line 27

def handle_error(exception, ctx = {})
  coordinator = Thread::Queue.new

  Thread.new do
    handlers
      .each { |handler| trigger_handler(handler, exception, ctx) }
      .tap { coordinator.push(true) }
  end.tap do |thread|
    thread.report_on_exception = true
  end

  !!coordinator.pop(timeout: TIMEOUT)
end

#on_error(handler = nil, &block) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/harmoniser/error_handler.rb', line 18

def on_error(handler = nil, &block)
  h = handler || block
  raise ArgumentError, "Please, provide a handler or a block" if h.nil?
  raise TypeError, "Handler must respond to call" unless h.respond_to?(:call)

  @handlers << h
  self
end