Class: CDC::Core::EventMetadata

Inherits:
Object
  • Object
show all
Defined in:
lib/cdc/core/event_metadata.rb

Overview

Immutable metadata container for CDC domain objects.

Metadata keys are normalized to frozen strings. Nested hashes and arrays are recursively converted into Ractor-shareable objects. Values that Ruby cannot make shareable are stored as frozen #inspect strings.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(data = {}) ⇒ EventMetadata

Build metadata from a hash-like structure.

Parameters:

  • data (Hash) (defaults to: {}) —

    metadata values



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# File 'lib/cdc/core/event_metadata.rb', line 17

def initialize(data = {})
  @data = deep_shareable_hash(data)
  Ractor.make_shareable(self)
end

Instance Attribute Details

#data ⇒ Hash{String=>Object} (readonly)

Returns normalized metadata.

Returns:

  • (Hash{String=>Object}) —

    normalized metadata



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# File 'lib/cdc/core/event_metadata.rb', line 12

def data
  @data
end

Instance Method Details

#[](key) ⇒ Object?

Fetch a metadata value by string or symbol key.

Parameters:

  • key (String, Symbol) —

    metadata key

Returns:

  • (Object, nil) 


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# File 'lib/cdc/core/event_metadata.rb', line 26

def [](key)
  data[key] || data[key.to_s] || data[key.to_sym]
end

#to_h ⇒ Hash{String=>Object}

Return the normalized Ractor-shareable hash.

Returns:

  • (Hash{String=>Object}) 


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# File 'lib/cdc/core/event_metadata.rb', line 33

def to_h
  data
end