Module: Listen::Thread

Defined in:
lib/listen/thread.rb

Class Method Summary collapse

Class Method Details

._exception_with_causes(exception) ⇒ Object (private) 



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# File 'lib/listen/thread.rb', line 43

def _exception_with_causes(exception)
  result = +"#{exception.class}: #{exception}"
  if exception.cause
    result << "\n"
    result << "--- Caused by: ---\n"
    result << _exception_with_causes(exception.cause)
  end
  result
end

._log_exception(exception, thread_name, caller_stack: nil) ⇒ Object (private) 



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# File 'lib/listen/thread.rb', line 33

def _log_exception(exception, thread_name, caller_stack: nil)
  complete_backtrace = if caller_stack
    [*exception.backtrace, "--- Thread.new ---", *caller_stack]
  else
    exception.backtrace
  end
  message = "Exception rescued in #{thread_name}:\n#{_exception_with_causes(exception)}\n#{complete_backtrace * "\n"}"
  Listen.logger.error(message)
end

.new(name, &block) ⇒ Object

Creates a new thread with the given name. Any exceptions raised by the thread will be logged with the thread name and complete backtrace. rubocop:disable Style/MultilineBlockChain



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# File 'lib/listen/thread.rb', line 13

def new(name, &block)
  thread_name = "listen-#{name}"
  caller_stack = caller

  ::Thread.new do
    rescue_and_log(thread_name, caller_stack: caller_stack, &block)
  end.tap do |thread|
    thread.name = thread_name
  end
end

.rescue_and_log(method_name, *args, caller_stack: nil) ⇒ Object

rubocop:enable Style/MultilineBlockChain



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# File 'lib/listen/thread.rb', line 25

def rescue_and_log(method_name, *args, caller_stack: nil)
  yield(*args)
rescue => exception
  _log_exception(exception, method_name, caller_stack: caller_stack)
end