Class: Restate::DryStructSerde

Inherits:
Object
  • Object
show all
Defined in:
lib/restate/serde.rb

Overview

Serde for Dry::Struct types. Deserializes JSON into struct instances, serializes structs to JSON.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(struct_class) ⇒ DryStructSerde

Create a DryStructSerde for the given Dry::Struct class.



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# File 'lib/restate/serde.rb', line 181

def initialize(struct_class)
  @struct_class = struct_class
end

Instance Attribute Details

#struct_class ⇒ Object (readonly)

Returns the value of attribute struct_class.



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# File 'lib/restate/serde.rb', line 178

def struct_class
  @struct_class
end

Instance Method Details

#deserialize(buf) ⇒ Object

Deserialize JSON bytes into a Dry::Struct instance.



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# File 'lib/restate/serde.rb', line 194

def deserialize(buf)
  return nil if buf.nil? || buf.empty?

  hash = JSON.parse(buf, symbolize_names: true)
  @struct_class.new(**hash)
end

#json_schema ⇒ Object

Return the JSON Schema derived from the Dry::Struct definition.



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# File 'lib/restate/serde.rb', line 202

def json_schema
  @json_schema ||= Serde.dry_struct_to_json_schema(@struct_class)
end

#serialize(obj) ⇒ Object

Serialize a Dry::Struct (or hash-like object) to JSON bytes.



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# File 'lib/restate/serde.rb', line 186

def serialize(obj)
  return EMPTY_BYTES if obj.nil?

  hash = obj.respond_to?(:to_h) ? obj.to_h : obj
  JSON.generate(hash).b
end