Class: Dionysus::Producer::Outbox::DuplicatesFilter

Inherits:
Object
  • Object
show all
Defined in:
lib/dionysus/producer/outbox/duplicates_filter.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(records_to_publish) ⇒ DuplicatesFilter

Returns a new instance of DuplicatesFilter.



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# File 'lib/dionysus/producer/outbox/duplicates_filter.rb', line 15

def initialize(records_to_publish)
  @records_to_publish = records_to_publish
end

Class Method Details

.call(records_to_publish) ⇒ Object 



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# File 'lib/dionysus/producer/outbox/duplicates_filter.rb', line 4

def self.call(records_to_publish)
  new(records_to_publish).call
end

.deduplicated_records(records_to_publish) ⇒ Object 



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# File 'lib/dionysus/producer/outbox/duplicates_filter.rb', line 8

def self.deduplicated_records(records_to_publish)
  new(records_to_publish).deduplicated_records
end

Instance Method Details

#call ⇒ Object 



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# File 'lib/dionysus/producer/outbox/duplicates_filter.rb', line 19

def call
  consecutive_runs.flat_map(&:last)
end

#deduplicated_records ⇒ Object

The survivor of every run that collapsed something: the record was written again while an earlier message for it was still queued.



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# File 'lib/dionysus/producer/outbox/duplicates_filter.rb', line 25

def deduplicated_records
  consecutive_runs.select { |run| run.size > 1 }.map(&:last)
end