Module: Karafka::Pro::Routing::Features::OffsetMetadata::Topic

Defined in:
lib/karafka/pro/routing/features/offset_metadata/topic.rb

Overview

Commit Metadata API extensions

Instance Method Summary collapse

Instance Method Details

#initialize ⇒ Object

This method calls the parent class initializer and then sets up the extra instance variable to nil. The explicit initialization to nil is included as an optimization for Ruby’s object shapes system, which improves memory layout and access performance.



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# File 'lib/karafka/pro/routing/features/offset_metadata/topic.rb', line 49

def initialize(...)
  super
  @offset_metadata = nil
end

#offset_metadata(cache: true, deserializer: STRING_DESERIALIZER) ⇒ Config

Returns this feature config.

Parameters:

  • cache (Boolean) (defaults to: true) —

    should we cache the response until rebalance

  • deserializer (#call) (defaults to: STRING_DESERIALIZER) —

    deserializer that will get raw data and should return deserialized metadata

Returns:

  • (Config) —

    this feature config



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# File 'lib/karafka/pro/routing/features/offset_metadata/topic.rb', line 58

def offset_metadata(cache: true, deserializer: STRING_DESERIALIZER)
  @offset_metadata ||= Config.new(
    active: true,
    cache: cache,
    deserializer: deserializer
  )
end

#offset_metadata? ⇒ true

Returns is offset metadata active (it always is).

Returns:

  • (true) —

    is offset metadata active (it always is)



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# File 'lib/karafka/pro/routing/features/offset_metadata/topic.rb', line 67

def offset_metadata?
  offset_metadata.active?
end

#to_h ⇒ Hash

Returns topic with all its native configuration options plus offset metadata settings.

Returns:

  • (Hash) —

    topic with all its native configuration options plus offset metadata settings



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# File 'lib/karafka/pro/routing/features/offset_metadata/topic.rb', line 73

def to_h
  super.merge(
    offset_metadata: offset_metadata.to_h
  ).freeze
end