Class: TxghQueue::Backends::Sqs::HistorySequence

Inherits:
Object
  • Object
show all
Extended by:
Forwardable
Includes:
Enumerable
Defined in:
lib/txgh-queue/backends/sqs/history_sequence.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(sequence) ⇒ HistorySequence

Returns a new instance of HistorySequence.



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# File 'lib/txgh-queue/backends/sqs/history_sequence.rb', line 35

def initialize(sequence)
  @sequence = Txgh::Utils.deep_symbolize_keys(sequence)
end

Instance Attribute Details

#sequence ⇒ Object (readonly)

Returns the value of attribute sequence.



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# File 'lib/txgh-queue/backends/sqs/history_sequence.rb', line 31

def sequence
  @sequence
end

Class Method Details

.from_h(hash) ⇒ Object 



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# File 'lib/txgh-queue/backends/sqs/history_sequence.rb', line 20

def from_h(hash)
  new(
    JSON.parse(
      Txgh::Utils.deep_symbolize_keys(hash)
        .fetch(:history_sequence, {})
        .fetch(:string_value, nil)
    )
  )
end

.from_message(message) ⇒ Object 



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# File 'lib/txgh-queue/backends/sqs/history_sequence.rb', line 12

def from_message(message)
  if attribute = message.message_attributes['history_sequence']
    new(JSON.parse(attribute.string_value))
  else
    new([])
  end
end

Instance Method Details

#add(obj) ⇒ Object 



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# File 'lib/txgh-queue/backends/sqs/history_sequence.rb', line 39

def add(obj)
  sequence << obj
end

#current ⇒ Object 



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# File 'lib/txgh-queue/backends/sqs/history_sequence.rb', line 52

def current
  sequence.last
end

#dup ⇒ Object 



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# File 'lib/txgh-queue/backends/sqs/history_sequence.rb', line 47

def dup
  # use marshal serialization to deep copy the sequence
  self.class.new(Marshal.load(Marshal.dump(sequence)))
end

#each(&block) ⇒ Object 



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# File 'lib/txgh-queue/backends/sqs/history_sequence.rb', line 56

def each(&block)
  sequence.each(&block)
end

#to_h ⇒ Object 



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# File 'lib/txgh-queue/backends/sqs/history_sequence.rb', line 43

def to_h
  { string_value: sequence.to_json, data_type: 'String' }
end